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TU 14-4-406-73

MINISTRY OF FERROUS METALLURGY OF THE USSR

State Committee for Standards
USSR Council of Ministers

Registered and entered in the register
state standards
11/22/73 No. 111180

AGREED

Chief Engineer of Soyuzchasprom
MpsA and SU

Novikov O.D.

«16». 07.1973

Chief engineer of Glavmashdetali
Ministry of Mechanical Engineering
for the food industry non-household appliances

Yakupov.

«___" _______ 1973

UDC 669.14−418.2

Group B-34

APPROVED
Chief Engineer of Glavmetiz MCHM USSR

Orinichev V.I.

May 23, 1973


HEAT-TREATED STEEL BAND
FOR WINDING SPRINGS

Technical conditions
TU 14−4-406−73
(Instead of ChMTU 3664−53)

The term of introduction is October 1, 1973.

Agreed:

Chief Engineer Orlovsky

watch factory

Novikov V.S.

July 28, 1973

Chief Engineer of the Association

Lenmashelectrobytribor

Avetin

«___" _______ 1973

Valid October 1, 1978

Designed by:

Chief Engineer of the Leningrad

steel mill

Burgukov G.G.

May 22, 1973


ODR 26256 12/11/73

1973 g.


This specification applies to heat-treated steel strap for winding springs.

1. NOMENCLATURE. VARIETY

1.1. Depending on the purpose, the tape is subdivided:

a) by material:

  • steel grade 70S2XA — for springs of watch mechanisms;
  • steel grade 40KKHNM (K40NKhM) — a corrosion-resistant non-magnetic alloy for springs of watch mechanisms operating in high humidity conditions at temperatures of ± 50 ° С;
  • steel grade 70 — for winding toy springs.

NOTE:

  • Steel grade 70S2XA or 70 is specified in the order.
  • Tape from alloy 40KHNM is manufactured in technically justified cases by agreement of the parties.

b) by manufacturing accuracy:

Tape from steel 70S2XA and alloy 40KHNM:

  • normal accuracy in thickness and width;
  • increased accuracy in thickness and width;
  • increased accuracy in thickness;

70 grade steel strip:

  • normal accuracy in width and thickness.

1.2. The dimensions of the tape and the maximum deviations for them must correspond to those indicated in table. No. 1, 2 and 3


1.2.1. S O R T A M E N T
strips made of steel grade 70S2XA

Table 1

mm
Thickness Limit deviations depending on manufacturing accuracy Width Limit deviations depending on manufacturing accuracy
normal increased normal increased
0.10 -0.03 -0.02 4−16 -0.3 -0.2
0.14
0.15
0.19
0.20
0.21 4−26
0.22
(0.23)
0.24
0.25
0.26
(0.27)
0.28 -0.03 -0.02
0.30 -0.04 -0.03 5−40 -0.3 -0.2
0.32
(0.33)
0.35
0.36
0.38
0.39
0.40 -0.05 -0.04
0.42
(0.43)
0.45 6−40
(0.47)
(0.49)
0.50
0.55 10−40 -0.4 -0.3
0.60
(0.62)
0.63
0.65
0.70
0.80 -0.07 -0.05

NOTES:

  • The dimensions of the tape in width are 0.5 mm within the specified limits.
  • Tape with a width of 4 mm with a thickness of 0.2 mm and more and 5 mm with a thickness of 0.25 mm and more can be made crimped.
  • A tape with maximum deviations in width of increased accuracy is manufactured in technically justified cases by agreement of the parties.

1.2.2. S O R T A M E N T
tapes from alloy grade 40KHNM

table 2

mm
Thickness Limit deviations depending on manufacturing accuracy Width Limit deviations depending on manufacturing accuracy
normal increased normal increased
0.13 * -0.02 -0.015 ten -0.3

+0.05

-0.01

0.15 -0.03 -0.02 13−16 -0.2
0.19 6.75
0.22 6.75
(0.23) 6.75; 9
0.24 eleven
0.25 eleven
0.26 * -0.04 ± 0.015 7.65
0.32 -0.03 6.75; 11
0.36 7.65
0.42 fifteen
(0.47) -0.05 -0.04 7.65
0.50 10.4
(0.62) 25   -0.3

* NOTE: Two-sided maximum deviations during 1974 are converted to minus with a corresponding change in the nominal size.

1.2.3. S O R T A M E N T
70 grade steel belts

Table 3

Thickness Maximum deviations in thickness Width Limit deviations in width
0.24 -0.03 five -0.3
0.28 -0.04
0.30
0.33
0.38
0.40


NOTE to tables 1, 2, 3:
Thickness dimensions indicated in parentheses are not recommended and after January 1, 1947, they are to be excluded as not corresponding to a number of preferred numbers in accordance with GOST 8032−56.

Example of a symbol:
Tape of increased accuracy in thickness and width made of 70S2XA steel or 40KXNM alloy with dimensions of 0.24x11 mm:
  • tape 70S2XA VM — 0.24x11 TU 14−4-406−73;
  • tape 40KHNM VI — 0.24x11 TU 14−4-406−73.

2. TECHNICAL REQUIREMENTS

2.1. The strip is made of steel grade 70 in accordance with GOST 1050−60, 70S2XA in accordance with GOST 14959−69, alloy 40KHNM in accordance with GOST 10994−64.

2.2. The mechanical properties of the tape must correspond to those indicated in table. No. 4 and 5.

2.2.1. Tape made of steel grade 70S2XA
and alloy 40KHNM (K40NHM)

Table 4

Nominal tape thickness, mm Mechanical properties
Spring angle in degrees, not less Number of folds, not less
0.10 137 50
0.13 134 40
0.14 131 36
0.15 128 32
0.19 145 nineteen
0.20 142 sixteen
0.21 139 fourteen
0.22 136 12
0.23 133 ten
0.21 130 nine
0.25 170 32
0.26 168 thirty
0.27 166 28
0.28 164 26
0.30 160 23
0.32 156 21
0.33 154 20
0.35 149 18
0.36 147 17
0.35 143 fifteen
0.39 141 fourteen
0.40 139 13
0.42 135 eleven
0.43 133 ten
0.45 129 18
0.47 149 23
0.49 145 21
0.50 143 20
0.55 133 sixteen
0.60 128 13
0.62 126 eleven
0.63 125 ten
0.65 120 eight
0.70 115 five
0.80 105 3


2.2.2. Mechanical properties (spring angle and number of bends) of a tape made of 40KKHNM alloy must correspond to those indicated in Table 4. After the release and can be checked by the consumer after the release of the tape according to the mode specified by the tape manufacturer in the certificate.

2.2.3. 70 grade steel strip

Table 5

Belt thickness, mm Mechanical properties
Spring angle in degrees, not less Number of folds, not less
0.24 128 fourteen
0.28 161 31
0.30 157 28
0.33 151 25
0.38 140 20
0.40 136 17


2.3. The surface of the strips made of steel grades 70S2XA and 70 should be colored. Colorization color from light yellow to violet.

In one roll, simultaneously different shades of colorization color are allowed within the specified colors.

NOTE: By agreement of the parties, the tape with a thickness of 0.1−0.15 mm can be supplied light-spotted with tint colors from yellow to dark blue.

2.4. Alloy 40KHNM strip is supplied with a light surface.

2.5. On the surface of the tape there should be no sunsets, deep shells, delamination, transverse marks. There should be no rust on the surface of the steel strip.

Longitudinal scratches, risks, cavities, imprints and from rolls and roughness, the depth or height of which does not exceed half of the maximum deviation in thickness, are allowed.

2.6. The height of the tape surface must be at least 8 class in accordance with GOST 2789−59.

2.7. The edges of the tape should be sanded (dull).

There should be no flaws or cracks on the edges of the tape. Traces from abrasive processing and unpolished places (shortage) in an amount of not more than 10 per 1 skein are allowed.

NOTE: 4mm and 5mm tape edges can be naturally rounded.

2.8. The tape should be supplied in rolls with an inner diameter of 100 to 300 mm.

Crimped tape can be supplied in bundles or on spools.

2.9. The minimum weight of a roll, consisting of one piece, is set at the rate of 0.60 kg per 1 mm2 of the tape cross-section.

In one roll, several pieces of tape of the same grade of material, manufacturing accuracy, one type of surface, each at least 20 m long, are allowed. The number of such rolls should not exceed 10% of the batch.

3. RULES OF ACCEPTANCE AND TEST METHODS

3.1. The finished tape is accepted by the technical control department of the supplying plant in accordance with these specifications.

The supplier guarantees that the tape meets the requirements of these specifications.

3.2. The tape is delivered in batches. A batch should consist of a tape of the same size, grade of material, one heat, one precision of manufacture.

3.3. The quality control of the tape by the technical control of the supplier is carried out in accordance with the following sampling and sampling rules and test methods.

3.4. Each roll is subject to external inspection and measurement.

Inspection of the surface and edges is carried out with the naked eye, the size is checked with a micrometer and a vernier caliper.

3.5. To control the spring angle and the number of bends, 10% of the rolls are taken from each batch.

3.5.1. The spring angle is determined according to the standard of the Leningrad Steel Rolling Plant STP 9−38−73 and according to Table 6.

Table 6

Nominal tape thickness, mm Tool mandrel diameter, mm
0.10 to 0.15 5.0
0.19 to 0.24 10.0
0.25 to 0.45 20.0
0.47 to 0.80 30.0


3.5.2. Determination of the number of bends is made in accordance with GOST 13813−68 and in accordance with table No. 7.

Table 7

Nominal tape thickness, mm The radius of the jaws of the device, in mm Lever arm length of the device, in mm
0.10 to 0.24 2 6
0.25 to 0.45 4 12
0.47 to 0.70 6 18
0.80 eight 24


3.6. Determination of the cleanliness (roughness) of the surface is carried out according to GOST 2789−59 using the MKS-11 microscope.

3.7. For each type of test, one sample should be taken from each controlled roll.

3.8. The chemical composition of the metal of the tape is certified by the certificate of the metal supplier. If necessary, the chemical composition of the metal of the tape is determined in accordance with GOST 2331−63, GOST 11655−65.

3.9. If unsatisfactory results are obtained for at least one of the indicators, repeated tests are carried out on it with a double roll from the number that did not pass the tests.

The results of the retest are considered final.

3.10. For control verification by the consumer of the quality of products for compliance with the requirements of these specifications, the selection rules and test methods specified above should be applied.

Notes: For a strip made of alloy grade 40KZNM, the certificate additionally specifies the mode of heat treatment (tempering) of the metal at the consumer.

4. MARKING AND PACKAGING

4.1. Marking and packaging of the tape in accordance with GOST 2614−65.

5. PROCEDURE OF PAYMENT FOR PRODUCTS

5.1. The wholesale price is calculated according to the appendix.


Ministry of Ferrous Metallurgy
GLAVMETIZ
Technical conditions
registered
«27». 08.1983 I. Barysheva


application
to TU 14−4-406−73

Heat-treated steel tape
for winding springs

Initial data for price calculation:

1. As a base tape / analogue /, a heat-treated steel tape for winding springs is used, colorized with rounded edges from steel grade U10A of normal accuracy according to ChMTU 3664−53 with additional-1−4, the price of which is listed in the price list 01−5 p. 70 -71 h. 1.

2. The tape according to the new technical conditions differs in the following quality indicators from the analog tape / cm. appendix 2 /.

3. The wholesale price for a strip made of steel grade 70C2XA under the new technical conditions is determined by the formula Tsn = / TsbTsm x Ku / x / / 12fed7086c7b6956090083aa.

Tsb = for all sizes according to CMTU 3663−53 made of U10A steel.

Base price for newly introduced tape dimensions with thickness: 0.21 mm; 0.23 mm; 0.25 mm; 0.27 mm; 0.32 mm; 0.36 mm; 0.39 mm; 0.42 mm; 0.47 mm and 0.62 mm are accepted at the list price of the tape of the nearest smaller size / pr. 01−05, Wed 13/.

For other newly introduced sizes, the Central Bank is determined using KS — the coefficient of price ratio in accordance with GOST 2614−65 pp. 56−57 and the price of the tape according to ChMTU 3664−53 of the nearest sizes and Kc of the price of the tape according to ChMTU.


The base price for sizes 0.10x14 and 15−19 is calculated by:

Ks the price of the tape according to GOST 2614−65 and the price of the tape according to ChMTU.

GOST2614−65 =

GOST2614−65 =

The base price for the size 0.14x4−16 is calculated by:

Kc tape prices according to GOST 2614−65 and tape cents according to ChMTU.

GOST2614−65 =


GOST2614−65 =


GOST2614−65 =


=


=


=


=


=


=


=


=


=


Base price for size 0.15x14−15−19

=


Base price for size 0.19x14−15−19

=


=


Base price for size 0.20x14−15−19

=


=


The base price for a tape 0.49x6−9 is calculated by:
Кс price of tape 0,45х0,48 according to ChMTU

=

=


=


=


The base price for the size 0.50x6−9 is calculated by:
Ks the price of the tape is 0.45 and the price of the tape is 0.5x10 ChMTU


=

=


=


=


The base price for the size 0.55x6−9 is calculated by:
Ks tape price 0.45 and tape price 0.55 ChMTU


=

=


=


=


CM = +62 rubles. — pr. 01−05 bldg. 71
KU = 1
Пп = 0
Pr = 0.



Calculation of wholesale prices for tape for new
specifications for grade 70


The price for tape from grade 70 is determined by the formula:


Tsn = / Tsb Tsm x Ku / x / / Pr.

Cr = for each size according to new TU 14−4-406−73

CM = -76 rubles. The price of rolled up brand 70S2XA rubles
for 1 ton / pr. 01.03 p. 391 /,
stamps 70−126 rubles for 1 ton / additional 2 page 15 /
price list 01−03 /.

Ku = 1.3 — / Appendix No. 2 to the position /.

Tsn = Ts / new TU / — (76 x 1.3) = Tsb — 96 rubles.


According to the new technical conditions, a strip made of steel grade 70 is priced cheaper than a strip made of grade 70S2XA by 96 rubles per 1 ton.


Wholesale price calculation for tape
from alloy 40KHNM


1. An analogue is a tape made of 40KHNM precision alloy for elastic elements in accordance with GOST 14117−69, wholesale prices for which are listed in Appendix 12 to price list No. 01−05.

2. According to the new technical conditions, the tape differs from the analogue tape in the following quality indicators:

Qualitative indicators Tape in accordance with GOST 14117−69 New TU tape
1. Belt width in mm 100−150 6.75−25
2. Mechanical properties
kgf / mm 2 100−180 ruled out
spring angle - standardized
kink - standardized


Wholesale price calculation

The wholesale price for a tape made of 40KHNM alloy is determined by the formula:

Tsn = / Tsb Tsm x Ku / x/ / 12fed7086c7b6956090083aa37fc

1) Central bank — the price of a tape with a width of 100−200 mm for each size according to GOST 14117−69 / Add. 12 to the avenue No. 01−05.

2) Tsm = 0; Ku = 1.

3) PP — for width: 6.75−7.65 mm = 37%

9.0−11 mm = 27%

13−25 mm = 20%

/ Add. 23 to the price list No. 01−05 /

4) PP — for quality requirements = + 8%:

incl. surcharge: 5% — per spring angle / by agreement /;

5% — for testing the tape for bend / pr. No. 01−05 p. 62 /

2% discount — with the exception of the tensile strength test / Appendix No. 1 «Regulations» /.

5) Pr = 0.

Wholesale price for 40KHNM alloy tape
according to TU 14−4-406−73

Belt dimensions, mm Base price, in rubles per ton of tape Surcharge for a showcase, in% Surcharge for quality requirements, in% Wholesale price, in rubles per ton
0.13x10 32700 27 eight 44150
0.15x13−16 32700 20 eight 41860
0.19 + 0.26x6.75−7.65 30500 37 eight 44230
0.23 + 0.25x9−11 30500 27 eight 41180
0.32 + 0.36x6.75−7.65 29820 37 eight 43240
0.32x11 29820 27 eight 10260
0.42x15 29820 20 eight 38170
0.47x7.65 29350 37 eight 42560
0.50x10.4 29350 27 eight 39620
0.62x25 29350 20 eight 37570


Surcharges and discounts to the prices of the tremotreated tapes for mainsprings made of steel grades 70S2XA and 40KHNM:

  • For increased accuracy in thickness, a surcharge of 10%.
  • For increased accuracy in thickness and width 15% surcharge.
  • 10% discount on delivery of light-spotted tape
  • When manufacturing individual belt sizes by flattening, a surcharge of 25%.

Head of Planning
Department of DSPZ

Ivaschenko

«28» .07.1973

Head of Planning Department
Lenmashbytelektropribor


«23» .07.1973

Head of Planning Department
Orlovsky plant
Khokhlova

«31». 07.1973


The calculation of wholesale prices has been verified by: Andreev I.A. Copy is right.
Head laboratory of economics on July 17, 1973


Appendix # 1

Wholesale prices for heat-treated steel tape from steel 70S2XA
according to TU 14−4-406−73

  4.0 4.5 5.0 5.5 6.0 7.0 8.0 9.0 ten 12 fourteen 15−19 20−40
1 2 3 4 five 6 7 eight nine ten eleven 12 13 fourteen
0.10 5420 5080 4780 4530 4720 4150 4000 3820 3630 3420 3190 3100 -
0.14 5130 5020 4760 4440 4210 3810 36900 3560 3500 3240 2830 2770 -
0.15 4580 4430 4220 3860 3660 3400 3310 3230 3170 2980 2790 2760 -
0.19 3360 3100 2940 2790 2650 2470 2360 2900 2250 2030 1960 1880 -
0.20−0.21 5930 2840 2690 2600 2460 2270 2180 2140 2100 1880 1780 1730 1320
0.22−0.23 2740 2660 2580 2420 2300 2120 2050 2010 1980 1800 1620 1460 1320
0.24−0.25 2590 2510 2430 2270 2130 2070 1970 1920 1880 1690 1520 1410 1300
0.26−0.27 2510 2440 2330 2180 2020 2010 1920 1840 1760 1560 1440 1360 1270
0.28 2480 2370 2280 2120 1970 1930 1860 1780 1710 1440 1370 1300 1830
0.30 2350 2250 2130 2080 1950 1830 1780 1730 1650 1360 1320 1270 1180
0.32−0.33     2100 2100 1930 1810 1740 1670 1620 1330 1300 1260 1160
0.35−0.36     200 1920 1900 1750 1690 1640 1580 1290 1270 1830 1130
0.38−0.39     1910 1830 1800 1720 1650 1600 1580 1270 1240 1200 1120
0.40−0.42     1850 1780 1780 1660 1600 1570 1540 1240 1210 1190 1180
0.43     1790 1744 1700 1620 1550 1510 1470 1220 1190 1160 1090
0.45−0.47     1730 1690 1650 1580 1510 1450 1420 1200 1170 1130 1060
0.49         1630 1550 1480 1420 1390 1180 1150 1110 1050
0.50         1580 1510 1400 1390 1360 1160 1140 100 1040
0.55         1520 1460 1390 1340 1310 1140 1120 1080 1020
0.60−0.62                 1270 1120 1100 1060 1000
0.63                 1250 110 1090 1050 990
0.65                 1240 1100 1080 1040 980
0.70                 1220 1080 1060 1030 960
0.80                 1180 1050 1040 1010 940


A tape according to TU 14−4-406−73 of grade 70 steel is regarded as cheaper than a tape made of Maki 70S2XA steel by 96 rudders per ton

Appendix # 2

Qualitative indicators ChMTU 3664−53 TU project Tightening, loosening Base
1 2 3 4 five
steel grade U10-U12A, at the request of the customer 70S2XA 70S2XA, 40KNXM, m. 70 Introduced new brands 40KNXM and m.70 are excluded U10A-U12A Surcharge for metal
Assortment

0.10−0.30x3.15

0.32−0.60x4−15

0.63−0.80x4.15

0.10−0.30x15−40

1.32−0.60x15−40

0.63−0.80x15−40

0.10−0.30x4−26

0.32−0.40x5−40

0.42−0.55x6−40

0.55−0.70x10−40

0.80x10−10

   
Surface

Surface cleanliness is not specified.

Must be polished.

At the request of the consumer with a light surface.

Surface finish 8 cl.

The determination is made in accordance with GOST 2789−59.

Colored ribbon made of 40KNXM alloy — light.

On request it is made light-cured.

polish. already 8 cl.

solable.

Discount pr. 01−05, building 62
Mechanical properties

Spring angle

Number of folds

Spring angle

Number of folds

Without changes
Without changes
 
Groove It is not checked and is not a defect Not specified Without changes  
Sabotage At the request of the customer, it is checked for sagging Not specified Without changes  
Edges Sanded Sanded Without changes  
Manufacturing precision For brand 70S2XA normal. and increased. by thickness. For grade 70S2XA and alloy 40KNXM normal., Increased accuracy in thickness and increased. accuracy in thickness and width.    
Delivery conditions Trim in rolls and can on spools. Tape 0.2x4.0 and 0.25 and 5 mm higher. Maybe put. plush. with natural round. chrome. in rolls and on spools.    


Change to Application of calculation
wholesale prices for steel tape
three-treated for clockwork
springs from alloy 40KHNM
TU 14−4-406−73

The surcharge for the quality indicators of the 40KHNM alloy tape should be 14% instead of 8%; incl. surcharges: for spring angle — 5% / by agreement /; for testing the tape for bending — 5% / pr. No. 01−05 p.62 /; for heat treatment — 6% / add. 29 p. 2 /; discounts — 2% excluding the test of ultimate tensile strength / Appendix No. 1 «Regulations» /.

Wholesale price for 40KHNM alloy tape
according to TU 14−4-406−73

Belt dimensions, mm Base price, in rubles per ton Width surcharges Surcharges for quality requirements Total surcharge Wholesale price in rubles per ton
0.13x10 32700 27 fourteen 41 46110
0.15x13−16 32700 20 fourteen 34 43820
0.19−0.26x6.75−7.65 30500 37 fourteen 51 46060
0.23−0.25x9−11 30500 21 fourteen 41 43000
0.32−0.36x6.75−7.65 29820 37 fourteen 51 45030
0.32x11 29820 27 fourteen 41 42050
0.42x15 29820 20 fourteen 34 39960
0.47x7.65 29350 37 fourteen 51 44320
0.50x10.4 29350 27 fourteen 41 41380
0.62x25 29350 20 fourteen 34 39330


Surcharges and discounts to the prices of heat-treated winding bands made of steel 70S2KA and 40KHNM.

  • For increased accuracy in thickness and width, a surcharge of 10%
  • For high accuracy in thickness and width, 15% surcharge
  • 10% discount on delivery of light-spotted tape.


ODR 19193−2914
02/12/1974 g.



— 2-

  • When manufacturing individual belt sizes by flattening, a surcharge of 25%.

Head of the planning department of LSPZ
L.N. Ivaschenko

October 16, 1973.

Head of Planning Department
Lenmashelectropribor

«____" October 1973

Head of Planning Department
Oryol plant

October 17, 1973


The calculation of wholesale prices has been agreed upon:

Head laboratory I.A. Andreev
Economics Institute 05.11.75


MINISTRY OF FERROUS METALLURGY
NIIMETIZ

«26» .11.1975

PO Box 45−82

Head of the WIS

Comrade Makarchuk I.N.

109001 Moscow


AMENDMENT LETTER
to specifications
TU 14−4-406−73
«Heat-treated steel tape for winding springs»

1. Clause 1.1. paragraph «a» is stated as follows:

«1.1. The tape is subdivided:

a) by material:

  • — from steel grade 70S2XA — for springs of watch mechanisms;
  • — from non-magnetic deformation-hardening alloy 40KHNM — for springs of watch mechanisms operating in aggressive environments and tropical climates at temperatures up to +400 ° С;
  • — made of 70 grade steel for winding toy springs.

Note:

  • steel grade 70S2XA or 70 is specified in the order.
  • 40KHNM alloy strip is produced in technically justified cases. «

2. Clause 2.1. set out in a new edition:

  • «2.1. The strip is made of steel grade 70 in accordance with GOST 1050−74, 70S2XA in accordance with GOST 14959−69, alloy 40KHChM in accordance with GOST 10994−74 «.
  • Reason: replacement of GOST 10994−64 by GOST 10994−74 and GOST 1050−60 by GOST 1050−74.

Head laboratory V.V. Ivaschenko
standardization

Noted
agreement 4 / 1.76.


Ministry of ferrous metallurgy of the USSR

AGREED.

APPROVED

Chief Engineer of Glavmetiz

Sornichev V.I.

August 01, 1975


HEAT-TREATED STEEL BAND

FOR WINDING SPRINGS

Technical conditions
TU 14−4-406−73
Change No. 1

Introduction date: 01.12.75 For a period of:


 

Designed by:

Chief Engineer of the Leningrad
steel mill

(Burkov G.G.)
May 08, 1974



Change No. 1
Heat-treated steel strap for winding springs
TU 14−4-406−73
Sheet 2

This change applies to a tape made of stainless alloy 40KHNM with dimensions of 0.23x6.75 and 0.63x20 mm, intended for winding springs manufactured by the enterprise p / ya G-4145, Moscow

1. Supplement paragraph 1.2.2. section 1 «Assortment» TU 14−4-406−73 with a size of 0.63x20 mm with permissible deviations: in thickness — normal accuracy — 0.05 mm, increased accuracy — 0.04 mm; in width — normal accuracy — 0.4 mm, increased accuracy — 0.3 mm.

2. Supplement section 2 «Technical requirements» with clause 2.10:

  • p.2.10. Rib curvature of a strip made of stainless alloy 40KHNM measuring 0.23x6.75 and 0.63x20 mm for an enterprise with p / y G-4149 should not exceed 5 mm per 1 meter of length.

3. Supplement section 3 «Acceptance rules and test methods» with paragraphs 3.11 and 3.12:

  • See paragraph 3.11. To check the rib curvature of a tape measuring 0.23x6.75 and 0.63x20 mm, samples from 5% of the rolls of the batch are taken from alloy 40KHNM.
  • See point 3.12. The determination of the rib curvature of the tape 0.23x6.74 and 0.63x20 mm is carried out in accordance with GOST 2283−69.

4. Technical specifications shall be supplemented with section 5 as amended:

  • «five. Payment procedure for products
  • 5.1. The calculation of the wholesale price is set according to the appendix. «


Head department 03.10.75
standardization I. Barchtev


Appendix to TU 14−4-406−73
with change # 1

Heat-treated steel strip
for steel winding springs
brand 40KHNM

As an analogue, a tape made of a precision alloy 40KHNM is accepted for elastic elements in accordance with GOST 14117−69, the wholesale prices for which are listed in Supplement No. 12 to avenue 01−05.

According to the technical specifications, the tape differs from the analogue tape in the following quality indicators:

Qualitative indicators The difference Surcharges + discounts Justification
1. Belt width

6.75 mm;

20 mm instead of 100−150 mm

37%

fifteen%

Supplement 23, p. 7, to avenue 01−05

2. Mechanical properties:

Tensile strength

Spring angle

Number of folds

Not standardized

Normalized

Normalized

-2%

five%

five%

Appendix 1
Provisions

Prospect 01−05, p. 62 (similar to permanent deformation)

Ave 01−05, bldg. 62

3. Terms of delivery Heat treated 6%

Add. 22 bldg. 2

And additional 12 p. 14

4. Rib curvature It is normalized, the norms correspond to GOST 2283−69 and 2284−69 five% Add. 11 bldg. 6



-2-

The wholesale price for a tape is determined by the formula:

Tsn = (Tsb ± Tsm x Ku) (1 ± W / 100) ± Pr

CB — for each thickness according to GOST 14117−69

PP 1 = 56% for tape 0.23x6.75 mm

PP 2 = 34% for a tape 0.63x20 mm

Calculation of the wholesale price for the tape,
stipulated by change No. 1
to TU 14−4-406−73

Belt dimensions, mm Base price, in rubles per ton PP CN, in rubles per ton Wholesale price, in rub. per ton with rounding
in % in rubles
0.26x6.75 30500 56 17080 47580 47580
0.63x20 29350 34 9979 39329 39330


1. When supplying a tape of increased accuracy in thickness, a surcharge of 10%

2. When supplying a tape of increased accuracy in thickness and width, a surcharge of 15%


Wholesale price calculation
compiled by:
Head of Planning Department
L.N. Ivaschenko
May 26, 1975


Wholesale price calculation agreed:
/ Head laboratory of economics
I.A. Andreev
October 02, 1975


APPROVED BY

manufacturer
May 28, 1984

AGREED

base organization for
standardization
January 6, 1984

with the customer

April 28, 1984

UDC 669.14−418.2

Group B-34

84.09.11 No. 111180/06


Right: _____


HEAT-TREATED STEEL TAPE FOR
WINDING SPRINGS OF ROLLER SPRINGS
BRUSH HOLDERS FOR ELECTRIC MACHINES

Technical conditions
TU 14−4-406−73

Change No. 6

Introduction period: 01.10.84 g

Clause 1.2.1. Table 1. Notes.

Clause 2 of the notes has been revised:
«2. A strip 4 mm wide with a thickness of 0.2 mm or more, a strip with a width of 5 mm with a thickness of 0.25 mm or more, a strip 6 mm wide with a thickness of 0.3 mm or more can be made by crimping. The manufacturing method of the above tapes is chosen by the manufacturer. «

Clause 2.7. The note is stated in the new edition:
«Note. The edges of flattened belts can be naturally rounded. «

Clause 3.12. Replaced reference: GOST 2283−69 to GOST 2199−76


-2-

Continuation of change 6
to TU 14−4-406−73

The title page has the code: OKP 12 3100

Clause 2.1. State in a new edition:
«The tape is made of steel grades 70, 70S2XA in accordance with GOST 14959−79, alloy 40KHNM in accordance with GOST 10994−74.»

The strip made by crimping in accordance with Note 2 of Table 1 is priced at the prices of the main table Appendix 1.

Registered:
June 25, 1984


OKP 12 3100

APPROVED BY

manufacturer

September 10, 1985

DEVELOPED

base organization
on standardization

September 6, 1985

AGREED

with the customer

23 August 1985

19 August 1985

08 August 1985

Right:

UDC 669.14−418.2

Group B 34

10/25/85, No. 111150/01


HEAT-TREATED STEEL TAPE FOR
WINDING SPRINGS OF ROLLER SPRINGS
BRUSH HOLDERS FOR ELECTRIC MACHINES

Technical conditions
TU 14−4-406−73

Change No. 7

Introduction date: 01.11.85
The term of validity of technical conditions shall be extended until 01.10.90.

Clause 2.10 shall be stated in the wording:


Amendment No. 7 TU 14−4-406−73 Page 2

«2.10. The crescent shape of a tape made of 40KHNM alloy with dimensions of 0.23x6.75 and 0.63x20 mm for two customers should not exceed 5 mm per 1 m of length. «

Clauses 3.11 and 3.12. Replace words:
«Rib curvature» to «crescent».

Replace Appendix 2 with a new one.

Sheet 2. In the lower stamp in the column «Letter» indicate — «A; in the column «Sheets» — «15» instead of «11».


Registered:
September 16, 1985


Appendix 2
to tu 14−4-406−73
form 3.1A
(required)

Name of the type of product according to NTD Product type code according to VKG OKP
Heat-treated steel tape for winding springs of coil springs of brush holders of electric machines 12 3100
Blocks by OKP Designation according to NTD OKP codes
Steel grades

70

70S2XA

40KHNM

3443

4537

9575

Profiles according to technical conditions 8598
Technical requirements

TU 14−4-406−73
N / T

VS

IN

6520

6521

6522

6523

Order forms and delivery terms

roll

skeins

70

31


The calculation of the codes was checked:
Senior Researcher
laboratory of standardization V.A. Kudasheva

Head department of standardization
and the quality of N.A. Galkina


OKP 12 3100

APPROVED BY

according to established order

January 14, 1987

AGREED

according to established order

with interested

organizations

Right:

 


HEAT-TREATED STEEL TAPE FOR
WINDING SPRINGS OF ROLLER SPRINGS
BRUSH HOLDERS FOR ELECTRIC MACHINES

TECHNICAL CONDITIONS
TU 14−4-406−73

Change No. 8


Introduction period: 05/01/87

No. 111180/08


TU 14−4-406−73 amendment No. 8 Page. 2

Add the introductory part: «and some springs».

Clause 1.1. subparagraph a), add: «from alloy 40KHNM-VI for cold-worked springs».

Clause 1.1. subparagraph b), after the words «from alloy 40KHNM» add «40KHNM-VI».

Clause 1.2.2. Table 2. The title should be supplemented with the words «40KHNM-VI».

Clause 2.1. Add the words: «alloy 40KHNM-VI» according to TU 14−131−417−79 «.

Clause 2.2.1. Table 4. The title should be supplemented with the words: «40KHNM-VI».

Clauses 2.2.2., 2.2.4 and 2.4 after the words «from alloy 40KHNM» shall be supplemented with «40KHNM-VI» and further in the text.

Clause 2.10. add: «and tapes from alloy 40KHNM-VI with the size of 0.19x6.75 mm».

Clause 3.11. after the words «from alloy 40KHNM» add «and tapes with dimensions of 0.19x6.75 mm from alloy 40KHNM-VI».

Clause 3.12. after the words: «and tapes 0.63x20 mm» add «as well as tapes 0.19x6.75 mm» and further in the text.

Appendix 1 shall be supplemented with Appendix 1-a (Sheet 16-a).

Supplement the specifications with Appendix 3 (Sheet 18) Appendix 4 (Sheet 19).


Registered:
January 22, 1987


Appendix 1-a
to TU 14−4-406−73
with change No. 1−8
Mandatory

The table of wholesale prices for tape according to TU 14−4-406−73 with changes No. 1−7 should be added:

Name and purpose of the tape Technical conditions steel grade Belt dimensions in mm Wholesale price in rub. and cop. per kg of tape
thickness width
Heat-treated steel strap for winding springs

TU 14−4-406−73

with changes No. 1−8

40KHNM-VI 0.19 6.75 90−71



Head laboratory p / p
pricing 12/30/86
VNIImetiza V.A. Serkin


Appendix 3
Mandatory

REGISTRATION SHEET
changes TU 14−4-406−73

VIFS No. 111180 dated 22.11.73

Name of the document containing the changes Industry registration date List of clauses of technical conditions to which changes apply Date and number of state registration
Letter of amendment St-7382 P. 1.1 .; p.2.1. -
Change No. 1 3.10.75 g. Section 1.2.2. Section 2.3.
Add section 5
No. 68900
from 02.12.75
Change No. 2 12.09.78 g. Clause 1.2.1, Clause 2.2.1, Clause 2.6., Clause 3.5.1., Clause 3.8., Clause 4.1., Clause 3.6.1. No. 132141
from 04.10.78
Notice 34/8857
dated 10/30/1979
Extension of the validity period of TU -
Notice 34/7453
from 27.08.80
Extension of the validity period of TU -
Notice No. 3 04/26/1979 Title page, introductory part; p.1.1., p.1.2.2., p.2.2.1., p.2.8. No. 148252
from 05/15/1979
Notice 34/6610
09/18/78
Extension of the validity period of TU -
Notice No. 4 03.11.81 Extension of the validity period of TU

No. 111180/04

12/24/81

Notice No. 5 11/17/82 Extension of the TU validity period; section 5; Appendix 1

No. 111180/05

28.01.83 g.

Notice No. 6 06/25/84. Clause 1.2.1., Clause 2., Clause 2.1., Clause 3.12., Clause 2.7. No. 111180/06
11.10.84
Letter of amendment

34/3794

from 05/15/81

A.2.2. -
Change No. 7 09/17/85 Extension of the TU validity period; clause 2.10., clause 3.11., clause 3.12 .; Appendix 2 Sheet 2 No. 111180/07
10.23.85



Appendix 4
Reference
to TU 14−4-406−73

SCROLL
documents for which there are
references in technical conditions

Designation Name
GOST 14959−79 Carbon and alloy spring steel. Technical conditions
GOST 2789−73 Surface roughness. Parameters and characteristics
GOST 21996−76 Cold-rolled, heat-treated steel strip. Technical conditions
GOST 22536.0−77 + GOST 22536.7−77 Carbon steel and unalloyed cast iron. General requirements for methods of analysis
GOST 2283−69 Cold-rolled strip made of tool and spring steel. Technical conditions.



MINISTRY OF METALLURGY OF THE USSR

OKP 12 3100

36/2347

Group B 34

I approve:

Deputy director for
scientific work of VNIIMETIZ

B.A. Kolomiets

«31» .08.1990


HEAT-TREATED STEEL TAPE FOR
WINDING SPRINGS AND ROLLER SPRINGS
BRUSH HOLDERS FOR ELECTRIC MACHINES

TECHNICAL CONDITIONS
TU 14−4-406−73

Change No. 9

Original holder: Leningrad Steel Rolling Plant.

Introduction period: 20.10.90

AGREED:

Deputy chief engineer
Minyar hardware and metallurgical

factory

telegram No. 6330

from 23.07.90 M.A. Besharev

Chief Engineer of the Oryol Watch Factory

telegram no. 1133

from 19.07.90 Yu.F. Kolosov

Deputy Director of the Scientific Research Institute of Instrumentation

telegram number I-1411

from 24.07.90 NS Danilin

Chief Engineer of Kirovograd

Branch of SKB Typewriters

telegram no. 2136

dated 26.07.90 V.V. Tkachenko

DEVELOPED:

Chief Engineer of the Leningrad Steel Rolling Plant

V.V. Kryzhanovsky

«13». 02.1990

02.11.1990
10/18/1990
No. 111180/09



Change No. 9 to TU 14−4-406−73 Sheet 2


The validity period of the TU shall be extended until 01.10.95.

Clause 2.8. Replace the word: «in bays» with «skeins».

Clause 3.5.1. The textual part before table 6 shall be stated in a new edition:
«Determination of the spring angle is carried out according to the procedure given in GOST 15146−69 and according to table 6».

Clause 3.8. Replace the reference to GOST 22536.0−77 + 22536.7−77 with «GOST 22536.0−87 + 22536.7−88.

Section 4. The name shall be supplemented with the words «transportation and storage».

Clause 4.1. to state in a new edition:
«4.1. Marking, packaging, transportation and storage — in accordance with GOST 21996−76 «.

Appendix 3.4 / sheets 18, 19 of amendment No. 8 / to cancel and replace with new sheets 18, 19 of amendment No. 9.


Expertise carried out
And about. head department of standardization
VNIIMETIZ
ON. Galkina
30.08.90 g.


Appendix 4
TU 14−4-406−73
Mandatory

REGISTRATION SHEET
changes TU 14−4-406−73

VIFS 111180 dated November 22, 1973.

Name of the document containing the changes No. and date of issue of the document List of TU clauses subject to changes
Change No. 1 03.10.75 P. p. 1.2.2 Section 2.3
Introduce section 5
Change No. 2 09/12/78 P. p. 1.2.1., 2.2.1., 2.6, 3.5.1., 3.7, 4.1
Notice 10/30/1979 Extension of the TU action
Notice 27.08.80 Extension of the TU action
Change No. 3 04/26/1979 Title page, introductory part of pp. 1.1.1, 1.2.2., 2.2.1, 2.8
Change No. 4 03.11.81g. Extension of the TU action
Change No. 5 11/17/82 Extension of the TU action
Change No. 6 06/25/84 P. p. 1.2.1., 2.1, 3.12, 2.7
Change No. 7 08/17/85 Extension of the TU action
P. p. 2.10, 3.11, 3.12, appendix 2, sheet 2.
Change No. 8 01/22/87 Introductory part, clauses 1.1., 1.2.2, 2.1., 2.2.1, 2.2.2, 2.2.4, 2.4, 2.10, 3.11, 3.12, appendix 1, 3, 4
Change No. 9   Extension of the validity period of TU
P. p. 3.5.1, 3.8, appendices 3.4



Appendix 3
Reference
to TU 14−4-406−73

Scroll
documents referenced in the TU

Designation Name
GOST 2789−73 Surface roughness. Parameters and characteristics.
GOST 14959−79 Carbon and alloy spring steel. Technical conditions.
GOST 15146−69 Heat-treated steel tape for voice reeds of musical instruments.
GOST 21996−76 Cold-rolled, heat-treated steel strip. Technical conditions.
GOST 22536.0−87 Carbon steel and unalloyed cast iron. General requirements for methods of analysis.
GOST 22536.1−88 Carbon steel and unalloyed cast iron. Methods for determining the content of total carbon and graphite.
GOST 22536.2−87 Carbon steel and unalloyed cast iron. Methods for determination of sulfur content.
GOST 22536.3−88 Carbon steel and unalloyed cast iron. Methods for the determination of phosphorus.
GOST 22536.4−88 Carbon steel and unalloyed cast iron. Methods for the determination of silicon.
GOST 22536.5−87 Carbon steel and unalloyed cast iron. Methods for determining the content of manganese.
GOST 22536.6−88 Carbon steel and unalloyed cast iron. Methods for the determination of arsenic.
GOST 22536.7−88 Carbon steel and unalloyed cast iron. Methods for the determination of chromium.
TU 14−131−417−79 Cold-rolled strip made of alloys 40KHNM and 40KHNM-VI.