TU 48-21-70-83
USSR MINISTRY OF NON-FERROUS METALLURGY
OKP 18 4420 AGREED Chief Engineer VPO "Soyuzelectroterm" V.I. Lugovskiy 06.02.83 |
UDC 669.35126-418.2 Group B 53 I APPROVE "Soyuztsvetmetobrabotka" G.I. Sarul 22.03.83 |
CHROME BRONZE STRIPS
Technical conditions
TU 48-21-70-83
(replaces TU 48-21-70-72
TU 48-21-417-74)
Valid from 04/15/83 to 04/15/98
AGREED Chief Engineer Giprotsvetmetobrabotka A.M. Rytikov 3.03.83 Chief Engineer plant "Electric" Chief Engineer enterprises P.O. Box G-4993 |
Chief Engineer LPO "Krasny Vyborzhets" A.M. Nikiforov |
1983
These technical conditions apply to strips of chrome bronze grade BrXI, intended for the manufacture of electrodes for electric welding machines, collector plates and other products.
Examples of conventional designations (mandatory when ordering):
Cold-rolled strip (D), rectangular cross-section (PR), normal manufacturing accuracy (N), without indication of delivery condition (X), 2.0 mm thick, 200 mm wide, in a roll (Roll) made of BrXІ alloy
Strip DPRNH 2.0x200xRul. BrXI TU 48-21-70-83.
Cold-rolled strip (D), rectangular cross-section (PR), normal manufacturing accuracy (N), heat-treated (P), 6.0 mm thick, non-dimensional width (NSh), non-dimensional length (ND) made of BrKhІ alloy
Strip DPRNR 6.0xNShxND BrHI TU 48-21-70-83.
Hot-rolled strip (G), rectangular cross-section (PR), normal manufacturing accuracy (N), heat-treated (R), 15.0 mm thick, 400 mm wide, 1200 mm long made of BrKhІ alloy
Strip GPRN 15.0x400x1200 BrHI TU 48-21-70-83.
| TU 48-21-70-83 | ||||||||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | |||||||
| Change | Sheet | Doc. No. | Subp. | Date | ||||||
| Developer. | Osadchaya | 22.12.87 | CHROME BRONZE STRIPS Technical conditions |
Lit. | Sheet | Sheets | ||||
| Checked | Pleshchuk | A | 2 | 12 | ||||||
| LPO "Krasny Vyborzhets" | ||||||||||
| N. counter. | Kozyreva | 23.12.87 | ||||||||
| Approved | ||||||||||
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
1. TECHNICAL REQUIREMENTS
The strip of chrome bronze grade BrXI must comply with the requirements of these technical conditions.
1.1. Basic parameters and dimensions.
1.1.1. The thickness of the strips and maximum deviations in thickness must comply with the requirements of Table 1.
mm Table 1
| Thickness of stripes | Maximum deviations in thickness with width from 100 to 600 | Material condition | Theoretical weight of 1 m2 of strips, kg | OKP code |
| 1 | 2 | 3 | 4 | 5 |
| 1.00 | -0.10 | Cold rolled non-heat treated |
8,455 | 18 4423 9405 |
1.20 1.50 |
-0.12 | Same -"- |
10,146 12,816 |
18 4423 9406 18 4423 9406 |
| 2.00 | -0.16 | -"- | 17,088 | 18 4423 9407 |
2.50 3.00 |
-0.18 | -"- heat treated and non-heat treated |
21,449 25,899 |
18 4423 9408 18 4423 9409 |
| 4.00 | -0.22 | Same | 34,621 | 18 4423 9410 |
5.00 6.00 |
-0.26 | -"- -"- |
43,343 52,243 |
18 4423 9411 18 4423 9411 |
| 7.00 | -0.28 | -"- | 61,054 | 18 4423 9412 |
| 8.00 | -0.30 | -"- | 69,865 | 18 4423 9412 |
| 10.00 | -0.70 | Hot rolled heat treated |
85,885 | 18 4423 9828 |
11.00 12:00 |
-0.80 | Same -"- |
94,340 103,240 |
18 4423 9828 18 4423 9828 |
13.00 14.00 |
-0.90 | -"- -"- |
111,695 120,595 |
18 4423 9829 18 4423 9829 |
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 3 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
mm Continuation of table 1
| 1 | 2 | 3 | 4 | 5 |
15.00 16.00 17.00 18:00 19.00 |
-1.20 | Hot rolled heat treated Same -"- -"- -"- |
128,160 137,060 145,960 154,860 163,760 |
18 4423 9829 18 4423 9830 18 4423 9830 18 4423 9830 18 4423 9830 |
20,00 21.00 22.00 |
-1.40 | -"- -"- -"- |
171,770 180,670 189,570 |
18 4423 9830 18 4423 9831 18 4423 9831 |
23.00 24.00 |
-1.50 | -"- -"- |
198,025 206,925 |
18 4423 9831 18 4423 9831 |
| 25,00 | -1.60 | -"- | 215,380 | 18 4423 9831 |
26.00 27.00 28.00 29.00 30,00 |
-1.70 | -"- -"- -"- -"- -"- |
223,835 232,735 241,635 250,535 259,435 |
18 4423 9832 18 4423 9832 18 4423 9832 18 4423 9832 18 4423 9832 |
| Notes: | 1. At the customer's request, strips with a thickness from 3.00 to 30.00 mm are manufactured without heat treatment. 2. When calculating the theoretical mass, the density of chrome bronze was taken to be 8.9 g/ cm3 . |
1.1.3. The strips are manufactured in measured and non-measured widths - not narrower than 100 mm, non-measured lengths - not shorter than 500 mm.
1.1.4. The length and width of measuring strips and maximum deviations for them must comply with the requirements of Table 2.
mm Table 2
| Thickness of stripes | Width | Length | |||
| denomination | maximum deviations | denomination | maximum deviations | ||
up to 3.0 incl. over 3.0 to 6.0 incl. over 6.0 to 8.0 incl. 10-30 |
100-600 100-600 100-600 100-400 |
-3 -4 -7 -10 |
500-2000 500-2000 500-2000 500-1250 |
-10 -10 -10 -10 | |
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 4 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
1.1.5. Measuring strips must be manufactured with intervals of: width - 50 mm, length - 250 mm. It is allowed to manufacture strips with a length multiple of the width.
1.1.6. Strips up to 2.0 mm thick may be supplied in rolls.
Note. By agreement between the manufacturer and the consumer, the production of strips of intermediate widths is permitted.
1.2. Characteristics.
1.2.1. The chemical composition of the strips must correspond to the BrXІ brand according to GOST 18175-78.
1.2.2. The mechanical properties of the strips must comply with the requirements of Table 3.
Table 3
| Material condition | Thickness of strips, mm | Brinell hardness, not less than | Electrical conductivity, m/Ohm mm2 , not less than |
Heat treated -"- |
3.0-8.0 10.0-30.0 |
5/250/30-120 HB 10/1000/30-110 HB |
0.4x10 2 |
The hardness of strips supplied without heat treatment is not regulated.
1.2.3. The surface of the strips must be free of contamination that hinders inspection. Local pinholes, scratches and roughness are allowed on the surface of the strips, which do not take the strips beyond the maximum thickness deviations during control cleaning. Temper colours, local darkening and traces of unburnt grease after heat treatment are allowed.
Waviness is allowed, but it disappears when the strip is bent.
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 5 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
1.2.4. The strips must be cut or rolled evenly. No oblique cut is allowed that would take the strips beyond the maximum deviations in width and length. The strips must not have significant burrs. Edge wrapping is not allowed.
1.3. Marking.
1.3.1. At the end of each strip or at the outer end of the roll, the following must be applied with BT-577 GOST 5631-79 varnish or on a firmly attached paper label:
- trademark or trademark and name of the manufacturer,
- conventional designation of products,
- batch number,
- quality control stamp.
1.3.2. Transport marking according to GOST 14192-77 with the application of the handling sign "Afraid of dampness".
1.4. Packaging.
1.4.1. The strips must be packed in packs. The weight of a pack must not exceed 80 kg.
The pack is tied in at least two places or crosswise with tape.
with a size of at least 0.3x20 mm according to GOST 3560-73 or wire with a thickness of at least 2 mm according to GOST 3282-74. The ends of the strapping tape are fastened with a lock, the wires - with a twist of at least five turns.
1.4.2. Rolls of strips must be tied around the circumference and in two places across with wire in accordance with GOST 3282-74 or tape in accordance with GOST 3560-73.
1.4.3. Consolidation of cargo spaces into transport packages is carried out in accordance with GOST 21929-76 and GOST 24597-81. Overall dimensions of packages in accordance with GOST 23238-78.
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 5a | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
The weight of packages must not exceed 1250 kg.
The packages are formed on pallets according to GOST 9557-73 or without a pallet using wooden blocks measuring 50x50 mm and the length corresponding to the length or width of the cargo space, with strapping in the longitudinal and transverse directions in three turns with wire of at least 3 mm in diameter according to GOST 3282-74 or tape of at least 0.5x20 mm in size according to GOST 3560-73. The ends of the strapping wire are fastened by twisting at least five turns, with tape - in a lock.
2. ACCEPTANCE RULES
2.1. Strips are accepted in batches weighing no more than 20,000 kg.
The batch must consist of strips of the same size, the same manufacturing method, the same material condition and be issued with one quality document containing:
- trademark or trademark and name of the manufacturer,
- conventional designation of products,
- batch number,
- net lot,
- test results (at the customer's request, specified in the order),
- quality control stamp.
2.2. The strips are subject to acceptance tests. The sequence of acceptance tests must correspond to Table 4.
Table 4
| Name of tests | Scope of testing |
| 1 | 2 |
| 2.2.1. Surface quality control | Each party strip. |
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 6 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
Continuation of table 4
| 1 | 2 |
2.2.2. Size control 2.2.3. Control of chemical composition 2.2.4. Brinell hardness testing 2.2.5. Conductivity testing 2.2.6. Control of the cutting bevel |
Each party strip. One strip from which one sample is taken. Selection and preparation of samples according to GOST 24231-80. At the manufacturing plant, samples are taken from the molten metal of each heat. Three strips per batch. One sample is taken from each selected strip. Two strips per batch. One sample is taken from each selected strip. Two stripes from the party. |
2.3. If unsatisfactory control results are obtained for at least one indicator, a repeat test is carried out on a double number of samples taken from the same batch.
The results of the retest are final and apply to the entire batch.
3. CONTROL METHODS
3.1. Quality control of the surface of the strips must be carried out without the use of magnifying devices.
3.2. The thickness of the strips must be measured with a micrometer in accordance with GOST 6507-78 at a distance of at least 100 mm from the corner apex and at least 10 mm from the edge at three points. Both ends of the strip and the middle part are subject to measurement, one measurement on each section.
The width of the strips should be measured using a measuring ruler in accordance with GOST 427-75 or a caliper in accordance with GOST 166-80.
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 7 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
It is permissible to control the thickness of the strips using a statistical method in accordance with GOST 495-77.
The length of the strips is measured using a metal measuring tape in accordance with GOST 7502-80.
3.3. The chemical composition of the strips must be determined according to GOST 23859.1-79, GOST 23859.3-79 and certified methods for chemical and spectral analysis approved by a higher organization.
3.4. Brinell hardness testing should be carried out in accordance with GOST 22761-77.
3.5. The electrical conductivity of the strips must be monitored using a VE-20N electrical conductivity meter according to TU 25.06.1-1686-75 or a similar device of the same accuracy class.
3.6. The cutting obliquity is determined in accordance with GOST 26877-86 using a measuring ruler in accordance with GOST 427-75 and a test square in accordance with GOST 3749-77.
4. TRANSPORTATION AND STORAGE
4.1. Transportation and storage must be carried out in accordance with GOST 495-77.
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 7a | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
Appendix 1
SCROLL
normative and technical documents,
which are referenced in TU 48-21-70-83
1. GOST 495-77 2. GOST 3282-74 3. GOST 3560-73 4. GOST 5631-79 5. GOST 9557-73 6. GOST 14192-77 7. GOST 18175-78 8. GOST 21929-76 9. GOST 22761-77 10. GOST 23859.1-79 11. GOST 23859.3-79 12. GOST 24231-80 13. GOST 24597-81 14. 15. GOST 23238-78 |
Copper sheets and strips. Technical conditions. Low carbon steel wire General purpose. Technical conditions. Steel packaging tape. Technical conditions. Varnish BT-577. Technical conditions. Flat wooden pallet with dimensions 800x1200 mm. Transport marking. Tin-free pressure-treated bronzes. Brands. Transportation of cargo in packages. General requirements. Metals. Test methods. Brinell hardness measurement. Heat-resistant bronzes. Method for determination of copper. Heat-resistant bronzes. Method for determination of chromium. Non-ferrous metals and alloys. General requirements for sampling and preparation of samples for chemical analysis. Packages of individual cargo. Basic parameters and dimensions. Certified methods for chemical and spectral analysis approved by a higher organization. Long-size cargo transport packages. Types, main parameters and dimensions. Technical requirements |
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 8 | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
Appendix 2
SCROLL
measuring instrument, on which
references are given in TU 48-21-70-83
1. GOST 166-80 2. GOST 427-75 3. GOST 3749-77 4. GOST 6507-78 5. GOST 7502-80 6. GOST 26877-86 7. TU 25.06.1687-75 VE-20N |
Calipers. Technical conditions. Measuring metal rulers. Technical conditions. Test squares 90 o . Technical conditions. Micrometers with a division value of 0.01 mm. Technical conditions. Measuring metal tape measures. Technical conditions. Metal products. Method of measuring shape deviation. Electricity meter eddy current conductivity. |
| TU 48-21-70-83 | Sheet | |||||
| 1 | Deputy. | 0810.33-87 | 22.12.87 | 8a | ||
| Change | Sheet | Doc. No. | Signature | Date |
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
| CHANGE REGISTRATION SHEET | |||||||||||||||
| Change | No. of sheets (pages) | Total sheets (pages) in the document |
Document No. | Incoming Doc. No. and Date | Signature | Date | |||||||||
| changed | replaced | new | confiscated | ||||||||||||
| TU 48-21-70-83 | Sheet | ||||||||||||||
| 9 | |||||||||||||||
| Change | Sheet | Doc. No. | Signature | Date | |||||||||||
| Inv. No. | Sub. and date | Exchange inv. No. | Inv. No. duplicate. | Sub. and date |
