GOST 6511-60

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  ГОСТ 6511-60

GOST 6511−60 Bars tin-zinc bronze. Specifications (with Amendments No. 1, 2, 3)

GOST 6511−60
Group W55

STATE STANDARD СОЮ3А SSR

BARS AND RODS, TIN-ZINC BRONZE

Specifications

Wrought stannic-zinc bronze rods.
Specifications

GST 18 4670

Valid from 01.07.60
before 01.01.96*
______________________________
* Expiration removed
Protocol 5−94 N Interstate Council
for standardization, Metrology and certification.
(IUS N 11−12, 1994). -
Note the manufacturer’s database.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR

DEVELOPERS

S. V. Vinogradov, R. S. Lipman, A. I. Knyazeva

2. APPROVED AND promulgated by the Committee of standards, measures and measuring devices under Council of Ministers of the USSR 15.03.60

3. REPLACE GOST 6511−53

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	Item number
GOST 166−89	26B
GOST 427−75	26V
GOST 1497−84	26th
GOST 1953.1−79−1953.16−79	26ж
GOST 3282−74	27, 27A
GOST 3560−73	27A
GOST 5017−74	9
GOST 6507−90	26B
GOST 7502−89	26B
GOST 9557−87	27A
GOST 10905−86	26V
GOST 14192−77	27B
GOST 15846−79	32
GOST 24047−80	26th
GOST 24231−80	26ж
GOST 24597−81	27A
THAT 2−034−225−87	26V

5. Validity extended until 01.01.96 by the Resolution of Gosstandart of the USSR from 15.03.90 N 435

6. REPRINT (January 1993) with additions 1, 2, 3, approved in November 1980; Post. N 5334 from 13.11.80, January 1984, March 1990 (IUS 1−81, 5−84, 6−90)


This standard applies to drawn, round, square, hex and extruded round bars and rods tin-zinc bronze, used in various industries.

(Changed edition, Rev. N 3).

I. ASSORTMENT

1. The diameters of drawn round rods and limit deviation should conform to table.1.

Table 1

The nominal diameter of bars, mm	Pred. off mm		The cross-sectional area of bars, mm	The linear density of bars, kg/m
increased accuracy (P)	normal precision (N)
5,0	19,6	0,17
5,5	-0,07	-0,16	23,8	0,21
6,0	28,3	0,25
6,5	33,2	0,29
7,0	38,5	0,34
7,5	44,2	0,39
8,0	-0,09	-0,20	50,3	0,44
8,5	56,7	0,50
9,0	63,6	0,56
9,5	70,9	0,62
10,0	78,5	0,69
11,0	95,0	0,84
12,0	113,1	Of 1.00
13,0	132,7	1,17
14,0	-0,11	-0,24	153,9	1,35
15,0	176,7	1.55 V
16,0	201,1	1,77
17,0	U.S. $ 227.0	Of 2.00
18,0	254,5	2,24
19,0	283,5	2,49
20,0	314,2	2,77
21,0	346,4	3,05
22,0	380,1	3,34
23,0	Of 415.5	3,66
24,0	-0,13	-0,28	452,4	Of 3.98
25,0	490,9	4,32
26,0	530,9	The 4.67
27,0	572,6	5,04
28,0	615,8	5,42
29,0	660,5	Of 5.81
30,0	706,9	6,22
32,0	804,2	7,08
35,0	-0,16	-0,34	962,1	8,47
38,0	1134,1	9,98
40,0	1256,6	11,06

2. The size of the drawn square and hexagonal bars tolerances for them to match the table.2.

Table 2

The nominal inscribed circle diameter, mm	Pred. off mm		The cross-sectional area of bars, mm		The linear density of bars, kg/m
increased accuracy (P)	normal precision (N)	square	hex	square	hex
5,0	25,00	Of 21.65	0,220	0,191
5,5	-0,07	-0,16	30,25	26,20	0,266	0,231
6,0	36,00	31,18	0,317	0,274
7,0	49,00	42,43	0,431	0,373
8,0	-0,09	-0,20	64,00	55,42	0,563	To 0.488
9,0	Of 81.00	70,15	0,713	0,617
10,0	100,00	86,60	0,880	0,762
11,0	121,00	104,79	1,065	0,973
12,0	-0,11	-0,24	144,00	124,70	1,267	1,097
14,0	Of 196.00	169,74	1,725	1,494
17,0	289,00	250,27	2,543	2,202
19,0	Of 361.00	312,63	3,177	2,751
22,0	484,00	419,14	4,259	3,688
24,0	-0,13	-0,28	576,00	498,82	5,069	4,390
27,0	Of 729.00	631,31	6,415	5,556
30,0	900,00	779,40	7,920	6,859
32,0	-0,16	-0,34	1024,00	886,78	9,011	7,804
36,0	1296,00	1122,34	11,404	9,877

3. The diameters of the circular extruded rods and tolerances must conform to table.3.

Table 3

The nominal diameter of bars, mm	Pred. off mm	The cross-sectional area of bars, mm	The linear density of bars, kg/m
normal accuracy
42	1385,4	To 12.19
45	1.6 million	1590,4	14,00
48	1809,6	15,92
50	1963,5	17,28
55	2375,8	20 and 91
60	2827,4	24,88
65	-1,9	3318,3	29,20
70	3848,5	33,87
75	4417,9	38,88
80	5026,6	Of 44.23
85	5674,5	49,94
90	6361,7	55,98
95	-2,2	7088,2	62,38
100	7854,0	69,12
110	9503,3	83,63
120	11309,7	99,53

Note. The linear density of bars calculated with a density of bronze is 8.8 g/cm.

4. (Deleted, Rev. N 1).

5. Oval bars should not display their size beyond the permissible deviations in diameter.

6. The length of the drawn bars are made:

a) random length:

from 1 to 4 m in diameter from 5 to 30 mm,

from 1 to 3 m — diameter 32 to 40 mm;

b) measuring length or a multiple dimensional measuring length within off-gage, with voltage tolerance of ±10 mm. Bars lengths produce on demand of the consumer. Drawn bars with a diameter less than 14 mm is permitted to manufacture in coils, length of bars should be not less than 3 m.

(Changed edition, Rev. N 2).

7. The length of the extruded rods should be not less than 0.5 m.

8. (Deleted, Rev. N 1).

The legend shall appear the subcircuit:

when the following abbreviations:

D round steel bars

G — solid

CU — circular cross section

KB — square section

SHG — hexagonal cross section

N — normal precision manufacturing

P — high precision manufacturing

ND — random length

KD — multiple of the length

BT — Bay

AV — processing machines.

Note. The missing figure is indicated by «X».

Examples of symbols

Rod, drawn, round, normal accuracy of manufacturing a diameter of 20 mm, random length, bronze brand Bros 4−3:

Rod DCMH 20 ND Broz 4−3 GOST 6511−60

The same, round steel bars, square, high precision manufacturing, with a diameter of 12 mm, a length of a multiple of 1 m, for processing on the machines, bronze brand Bros 4−3:

Rod DCVP 12 КД1 AV Bros 4−3 GOST 6511−60

The same, round steel bars, hexagonal, normal precision manufacturing, with a diameter of 10 mm, in coils, bronze brand Bros 4−3:

Rod DSGN 10 BT Bros 4−3 GOST 6511−60

The same, extruded, round, diameter 60 mm, random length, bronze brand Bros 4−3:

Rod HCRHH 60 ND Broz 4−3 GOST 6511−60

(Changed edition, Rev. N 2).

II. TECHNICAL REQUIREMENTS

9. Bars manufactured in accordance with the requirements of this standard on technological regulations, approved in the prescribed manner.

9a. The bars are made of extruded tanitimi and tin-zinc bronze brand Brot-3 with the chemical composition according to GOST 5017−74.

10. Surface bars should be free from contamination, hinder the inspection, no cracks, shells, shells, dents, scratches and oxides.

On the surface of bars allowed defects, not deducing the sizes of rods in the control sweep for maximum deviations.

9, 9a, 10. (Changed edition, Rev. N 2).

11. Bars must not have foreign inclusions, delaminations, voids.

12. Bars must be smelted. The local curvature of the rods 1 m length should not exceed the values given table.4.

Table 4

A method of manufacturing	Diameter of bars
from 5 to 18	over 18 to 40	over 40
Permissible curvature of 1 m length
Drawn	2,0	1,5	-
Drawn (processing machines)	1,25	1,0	-
Extruded	-	-	6,0

The overall curvature of bars should not exceed the works permitted by the local curvature of 1 m in length, bars in metres.

Drawn rods (for machining on machines) with a diameter of from 10 to 18 mm at the request of the consumer made with the local curvature 1 mm on 1 m length.

13. Bars should be trimmed evenly with the ends. Allowed to produce rods with a diameter of 28 mm and less with the cut ends.

12, 13. (Changed edition, Rev. N 2).

14. Bars should not be visible to the naked eye twisting.

15. Mechanical properties of bars shall conform to table.5.

Table 5

A method of manufacturing of bars	Diameter of bars, mm	Tensile strength,	Elongation, %
MPa (kgf/mm)
not less than
Drawn	5−12	430 (44)	10	12
13−25	370 (38)	12	18
26−35	330 (34)	14	20
36−40	310 (32)	16	20
Extruded	42−120	270 (28)	25	35

(Changed edition, Rev. N 2, 3).

16. At the request of the consumer drawn rods with a diameter of 5−15 mm should be tested by bending, and they must withstand the cold, without showing signs of strain, and without delaminations bend 90° around a mandrel with a radius of curvature equal to the diameter of the rod.

17. (Deleted, Rev. N 1).

III. ACCEPTANCE RULES

18. (Deleted, Rev. N 1).

19. The rods take lots. The party must consist of bars of one method and precision manufacturing, the same size and profile and decorated by one document on quality. The document about quality should contain:

trademark or the name and trademark of the manufacturer,

grade,

size bars

method and precision manufacturing,

the batch number

the results of mechanical tests

the designation of this standard.

The weight of the batch should not exceed 3,000 kg.

(Changed edition, Rev. N 2).

20. Control surface sizes and put every rod of the party.

21. To check fracture drawn bar from party take two rods, two beams or the two bays.

(Changed edition, Rev. N 2).

21A. Check for the presence of internal defects of extruded rods (press utain) is produced on each rod.

22. (Deleted, Rev. N 1).

23. For testing tensile and Flexural strength take two rods, two beams or the two bays from each party.

(Changed edition, Rev. N 2).

24. (Deleted, Rev. N 1).

25. To check the chemical composition of the selected two rods, two beams or the two bays of the party. Allowed the manufacturers of the test chemical composition to produce a sample taken from molten metal of each batch.

26. If unsatisfactory validation results at least one of the indicators, it conducted a re-test of the doubled sample taken from the same batch. The results of repeated checks apply to the entire party.

25, 26. (Changed edition, Rev. N 2).

IIIa. TEST METHODS

26a. The inspection of the surface is produced without the use of magnifying devices.

26B. Control of the diameters of the drawn bar is produced using a micrometer with graduation 0.01 mm according to GOST 6507−90, the diameters of the extruded rods — a caliper with a scale division of 0.1 mm according to GOST 166−89.

The bar length is measured with a metal ruler according to GOST 427−75 or measuring tape according to GOST 7502−89.

26V. The curvature of bars is checked as follows: the rod is placed on the plate. To check the hard rod put a straightedge according to GOST 10905−86 1 m long with a feeler gauge on the other 2−034−225−87, or metal measuring ruler according to GOST 427−75, or template to measure the maximum distance between the line and rod.

Allowed to use any other measuring tools, if they provide the necessary measurement accuracy.

(Changed edition, Rev. N 3).

26g. The test metal fracture is subjected to both ends of the rod. Selected bars incised with one or both sides, after which they break; the incision should be made so that the fracture passed through the Central part of the rod.

The width of the fracture shall be not less than 60% diameter — for bars with diameter up to 16 mm inclusive, not less than 10 mm for rods ø 16 mm. St

The examination is performed without the use of optical devices.

26D. Inspection of extruded bars in the presence of the press utain conduct a non-destructive method of control according to the methods specified in mandatory Appendix 1. The end of the rod is cut to complete removal of the press utain.

Allowed to check for the presence of the press utain by the fracture of bars. Kink in the delivery of bars not cropped.

26th. The tensile test bars is carried out according to GOST 1497−73.

Selection of samples for tensile tests carried out according to GOST 24047−80.

Allowed to apply statistical methods and non-destructive control of mechanical properties.

If there is disagreement in assessing the quality of the tensile test bars is carried out according to GOST 1497−73.

26ж. Chemical composition of bars is determined according to GOST 1953.1−79 — 1953.16 GOST-79.

Sampling for analyzing the chemical composition — GOST 24231−80.

Allowed to determine the chemical composition of other methods providing the required accuracy.

If there is disagreement in assessing the quality of the chemical composition of bars is determined by GOST 1953.1−79−1953.16 GOST-79.

26th, 26ж. (Changed edition, Rev. N 2).

IV. PACKING, MARKING, TRANSPORTATION AND STORAGE

27. Bars with a diameter of 35 mm and less tied into bundles weighing not more than 80 kg. Each bundle should consist of at least three bars and should be tied with wire in two turns with a diameter of not less than 2 mm according to GOST 3282−74 or other material according to normative-technical documentation approved in the established order, not less than in two places, so as to prevent mutual displacement of bars in the beam. The ends of the wire connected by twisting at least 5 turns.

By agreement with the consumer allowed to link bars in bundles weighing up to 500 kg Each bundle should be tied with wire in two turns with a diameter of not less than 3 mm according to GOST 3282−74 in at least two places, so as to prevent mutual displacement of bars in the beam.

Each Bay should be tied with wire in two turns with a diameter less than 0.5 mm according to GOST 3282−74 or other material according to normative-technical documentation approved in the established order, in at least three places evenly around the circumference of the Bay.

At the request of the consumer drawn rods with diameter up to 10 mm inclusive are Packed non-woven material according to normative-technical documentation or other kinds of packaging materials, ensuring the safety of products, with the exception of linen and cotton fabrics.

(Changed edition, Rev. N 2).

27A. When mechanized loading and unloading is carried out consolidation packages to transport packages weighing up to 1250 kg in accordance with normative-technical documentation. Dimensions of packages — according to GOST 24597−81 and normative-technical documentation.

Packaging bays, beams and bars separate, not bunched produce on pallets (for bars up to 1200 mm) according to GOST 9557−87 or without pallets (for rods with a length of over 1200 mm) using the bricks of height at least 50 mm, with tying wire with diameter at least 2 mm in two turns according to GOST 3282−74 or tape sizes not less than 0.3to 30 mm according to GOST 3560−73 two belts, as well as using a sling also packageable wire according to GOST 3282−74 diameter not less than 5 mm with the twist of not less than 3 turns.

Allowed manual method of packaging.

(Changed edition, Rev. N 3).

27B. Transport marking of packages — according to GOST 14192−77.

(Added, Rev. N 2).

28. Each beam needs to be attached to the metal or plywood label:

the trademark or name and trademark of manufacturer;

the legend of the rod;

batch number.

At the ends of bars with a diameter exceeding 35 mm and side bars with a diameter of 35 mm and less, not bunched, should be marked with trademark of manufacturer and grade alloy.

For labeling of bars allowed to use the letter designation «BOTS».

Allowed labeling of bars with a diameter exceeding 35 mm sticker paper label on either end of the rod indicating the symbols of the alloy, the batch number, the mark of the technical control Department.

When transporting goods by air shall be of plywood or of metal labels, which must be secured from both sides.

(Changed edition, Rev. N 2).

29, 30. (Deleted, Rev. N 1).

31. For drawn bar intended for processing in machines for pressing and the pressing on the shortcuts and in the document on quality after the size of the rod is additionally indicated by the letters «AB».

(Changed edition, Rev. N 2).

32. The bars up to three meters transporterowych by all kinds of transport in covered vehicles, rods with a length of over three meters transporterowych open vehicles in accordance with cargo carriage regulations applicable to transport of this species, in railway carriages, small or light-duty types of shipments.

Packaging for shipments originating in the far North and remote areas shall meet the requirements of GOST 15846−79.

(Changed edition, Rev. N 2).

32A. Bars should be stored in covered premises, which exclude mechanical damage, contact with moisture and active chemical substances.

Prolonged storage should not be allowed sharp fluctuations in temperature.

APP (mandatory). ULTRASONIC TESTING OF PRESS UTAIN

APP
Mandatory

1. The purpose and General requirements during the inspection

This methodology is designed to detect and determine the end of the press utain in extruded or drawn bars of non-ferrous metals and alloys with a diameter of 10 mm and above with the help of ultrasonic flaw detection means in the contact mode of entering of ultrasonic vibrations from the cylindrical surface of the rod. Allowed to use any ultrasonic flaw detector with the corresponding sensors provide sufficient sensitivity, the value of which is established by the setting on the test sample.

When control is used in a device for scanning with built-in dual sensors, and the direct combined transducers of ultrasonic testing. The device for scanning ensure the stability of acoustic contact of the transducer of the sensor rod in the dynamics due to the continuous flow of fluid under the sensor.

2. Test pieces for the flaw detector sensitivity adjustment

2.1. To configure the detector to a predetermined sensitivity produce special test samples with a diameter of 100, 60, 40 and 25 mm, a length of 200−300 mm of the same alloy and controlled bars or alloy with similar acoustic properties.

2.2. The surface of the test specimens shall not have nicks, pits, burrs.

2.3. The test sample should not have internal defects of a metallurgical origin that could be detected by ultrasonic method when setting up the detector at the highest real sensitivity.

2.4 Test sample should have a reference reflector in the form of drilled holes with a diameter of 1 mm, length 20 mm, located on the centerline of the rod at a distance of 70 mm from the end. Allowed to apply a control reflectors of other types, allowing to set the instrument on the sensitivity not lower than the setting on the control reflector in the form of drilled holes. The rod diameter of the test sample is selected depending on the diameter of the controlled wire (see table).

mm

The rod diameter of the test piece	The controlled diameter of the rod
100	120−80
60	80−50
40	50−30
25	30−10

2.5. Test sample is considered valid if it has certificate approved by the chief of the Central laboratory of the manufacturer.

3. Preparation for control

3.1. Before carrying out the control rods must be cleaned from dirt, dust, oil, paint and other contaminants.

3.2. Connect the sensor and alarm signals to detector, and the device for scanning — the tank contact liquid. Governing the tap to adjust the flow of the contact liquid (water) to ensure reliable acoustic contact and minimum flow of the contact liquid.

3.3. The inclusion of the instrument in the network and it is carried out in accordance with technical description and instruction manual of the instrument.

3.4. Before you begin the configuration of the flaw detector to a predetermined sensitivity, the adjustment is carried out oscilloscopes part (brightness, focus, shift vertically and horizontally) so that the scan line was below the center of the screen of the flaw detector to approximately 1/3 of a degree, was well focused and at the beginning it was not seen any bright spots.

3.5. When setting up the flaw detector to determine where the end of the press utiny the rod handles on the front panel of the instrument must be installed in the following location:

«Frequency» — position the frequency of the applied sensor;

«The band sounding» in position P.

3.6. Setting the sensitivity of the flaw in the control rods shall be performed using appropriate test samples. The movement sensor in the zone of control of the reflector to achieve maximum amplitude of the echo from the reference reflector. Then the knob «sensitivity» sets the amplitude of the echo from the reference reflector is approximately 0.5 of the height of the screen of the flaw detector.

3.7. Install the forward front of the gate-pulse automatic detector of defects flaw detector near the trailing edge of the probe pulse, the falling edge of the strobe pulse are placed directly on the controlled bars near the leading edge of this echo signal.

3.8. The correct setting of flaw detection equipment on the test specimen shall be checked at least every 2 hours.

4. Control

4.1. Monitoring is carried out in the control plot. Control place must be comfortable and allow free access on the circle and press utinam the end of the controlled rod.

4.2. Monitoring is carried out starting from the rear end of the extruded rod. The surface of the rod, through which ultrasonic vibrations are introduced, should be smooth, without sharp hollows, cavities and chipping.

The temperature of the controlled rod should be no higher than 40 °C.

4.3. For mechanical scanning of the sensor over the surface of the test part it is recommended to use a roller, prismatic and cylindrical device with built-in sensors of ultrasonic vibrations (ultrasonic testing).

4.4. Bars with a diameter less than 60 mm control on the frequency of ultrasonic vibrations 5 MHz, and bars and rods with diameter more than 60 mm at a frequency of 2.5 MHz. When determining the end of the press utiny bars of a material having an elastic anisotropy with a coarse-grained structure, it is recommended to use lower frequencies.

4.5. During the inspection, the device for scanning with the transducer mounted on press-utiny the end of the rod and firmly press the transducer to the surface; while on the flaw detector screen should appear backwall echo signal. With the advent of the echo-signal move the scanning device around the circumference of the rod.

4.6. The scanning speed of the sensor along the surface of the rod is selected from the conditions for obtaining reliable acoustic contact, it should not exceed 0.5 m/s.

4.7. When you move the sensor along and around the product is necessary to keep on the flaw detector screen for the presence of acoustic contact. Stable bottom echo indicates a satisfactory input waves in the rod. If sensor is working and properly configured equipment, the echo signal disappears, then test the reliability of the acoustic coupling by increasing the supply of contact fluid and wiping with rags the surface of the product.

4.8. About the presence of the press utiny the rod can be judged by the appearance of additional echo to the left of the bottom reflection.

4.9. After the detection of the press utiny sensor is moved along the rod to determine the length of the press utiny and where it ends. In the area where the echo from the press utiny missing and off pilot light auto signal defects, produce a further circular scanning and convinced that the press Utina over the entire circumference of the rod. When the circular scan detected a new press Utina, it is sure to end in the usual way.

4.10. By using ultrasound the exact location of the end of the press-utiny, is applied to the rod visible label cutting rod.

4.11. In the control of alloys, having proveedores coarse-grained structure, it is necessary to use more sensors the low frequency, ultrasonic vibrations, but first you need to monitor carefully rear end of the rod where the structural disturbance below the bottom echo-signal stable. On the background of unstable structural interference notice on cathode ray tube flaw detector the location of the echo from the press utiny and then see npecc-uterino to the disappearance from it of the echo signal.



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M.: standards Publishing house, 1993