Some standard content:
rcs_47.020.50
National Standard of the Republic of China
GB/T 549--1996
Electro-welded anchor chains1996-03-28Promulgated
1996-11-01Implementation
State Bureau of Technical Supervision
National Standard of the People's Republic of China
Electro-welded achor chairs
This standard is not equivalent to the international standard S704-11 Electro-welded anchor chains 31 Main content and scope of application
GR/T 549-:996
G549-83
This standard specifies the product classification, technical requirements, test methods, inspection conditions and storage of electro-welded anchor chains and their accessories (hereinafter referred to as accessories and parts).
This standard applies to all types of anchor chains and accessories used on ships. 2 Reference standard
Sampling method for chemical analysis of pulleys and allowable deviations of chemical composition of finished products GB222
GR223.1.~322.:2 Chemical analysis method for steel, silver and alloys Metal tensile test method
Metal full set bending test method
Mismatch and marking
GB21U6 Metal double ratio (V-notch> impact test method GK/T14525 Lead use sweep
3 Product classification| |tt||Properties are shown in Table 1.
, diameter is the common diameter of the whole chain,
3.2 Maintenance of lithium chain
Second-level welded chain
Third-level welded anchor chain
Light-level electric furnace anchor chain
Second-level non-corrosive brick
3.2.1 The anchor chain should be composed of ten sections. The sections are connected in reverse. The matching diameter is as shown in Figure 1 approved by the State Technical Supervision Bureau on March 2, 1996, om
:r-- :62
1996-11-01Buy and apply
East on the equipment
GB/T545—1956
Stick the battle section
Mountain section
Whole pole trial
Transfer and unload
1 plus the chain ring 3—the end chain 1—swivel: 3—no fold, 6—Shiao hold hit: ask for the correct buckle connection type supply, the end opening direction can be determined by the customer. 3.2.2 There should be no gear error, etc. The internal dry parts assembly should be connected with the buckle between 5 and 1, and the matching typical diagram connection library 2. In the limited department service
Water service chain book
Letter that is, shoot the appropriate finger
1/2al 6//21
1 Chain is not allowed to be in a uniform state 3.3 Chain link and accessories type and size
3.3.1 The type and size of the ordinary ring with stopper (code C>) shall be in accordance with Figure 3 and Appendix A (reference). CB/T 549-1996
3.3.2 The type and size of the enlarged ring (code EL) shall be in accordance with Figure 4 and Appendix A (reference). 3.3.3 The type and size of the end ring (code E) shall be in accordance with Figure 5 and Appendix A (reference). 3.4 The type and size of the connecting shackle code S shall be in accordance with Appendix A: Zhang Ke Ring Nominal Light
An Sui An Ring Public Holding Light
t-6-Gf:|| tt||The nominal diameter of the world-wide ring is good,
—not a ring,
GB/T549
American t open
3.3.5 Kent unloading code S type size according to 7 and Appendix A, two
3.3.6 end (code AS) type size connection diagram Appendix A—general energy Le nominal diameter:
Both add straight:
2y-1. 3ad
. I. te.
Red value of the full cup production,
Ken Tong Renhuan nominal ancient diameter:
Green and blood!
—Some dimensions of the public except classics.
,—not full!
J:-3 Idr
: The type and size of the swivel (code W> shall be in accordance with Figure 6 and Appendix A, Figure
3.3.8 The type, size and technical conditions of the swivel shall be in accordance with the provisions of G/T12, 3.3.9 The type and size of the non-uniform chain link (code) shall be in accordance with Technical Base 9 and Appendix A. The type and size of the swivel shall be in accordance with the provisions of G/T12. The type and size of the non-uniform chain link (code W) shall be in accordance with Technical Base 9 and Appendix A. The type and size of the swivel shall be in accordance with the provisions of G/T12. 5d.
Qingdao some rings will be
Note, each chain system is a large chain link with a certain size. 3.4 Anchor chain diameter series, test load and unit weight 3.4.1 Anchor chain diameter series, test load and unit weight are in accordance with Table 2. Table 2
Tension test load recommended by the manufacturer for tension test according to your inquiry, tension test load as shown in the test position
GH/T549-1996
Continued Table 2
Tension test load recommended
Tension test load
Tension test load
Tension test load
Tension test load
Tension test load
2 ±30
2 9-10
12- 50
12- 6:
.3x. 63
59- 23
Y- S-1
.01.30
GA/T 549—1996
Single 2
[Li Li Long Optometry Recommended Lacan Test Based on
Reliable Wall Load and
Anti-break Package Reduction Load and Re-pull Method Test Load Have
Tear Break Test No More
10 64c
11 180
JE5℃
Light-grade whole series, test load and unit quantity according to Table 3. 3. 4. 2
Control test load
Control test interval
Pulling test negative estimate
13 660
li gjo
10 6-10
Tensile test negative code
Weight per meter
36:, ky
411-04
41- 55
Meter weight
Pulling stock joint test negative line
113:31
534: 25
3.5 Marking examples
3.5.1 Chain shortening method:
GR/T549-1996
Pull small test coin
3 yuan 6:22
Chain diameter = 22mm second-level with block welding error
4M22GB/T540--1993
Chain diameter & 16mm first-level dead block welding pin: tank chain BM1-1SGB/T5191S96
3.5.7 Chain links and accessories are marked:
Breaking test load
E2- 50
10--90
322,13
GB/T 549 1996
Tensile test trousers
234, 2t
29, BC
（，2.5.2
Grade (M1,M2,M)
一. With stop pin cylinder A
: 二. No misalignment chain (B)
28- 12
Three-level Kent shackle with shoe diameter 4=46mm
GE/T 549—1996
GR/T 649--1996
Chain diameter (11.12.5..--1625
With stopper ring (heart)
Sweep ring (EL)
Shackle (S)
Casting ring and accessories
Back shackle (KS)
Final screen chain ring (E)
Unscrewed (AS)
Swivel [sw]
No stop ordinary frog ring (F.)
Grade (MIMM3 )
Kent Unloading State M3-KS16GET549-1996
4. Technical requirements
4.7 Chain and accessories materials
4.1.1 The anchor chain and accessories are made of M1, M2 and M3 grade chain steel. The steel part of the anchor chain is layered killed steel. Its chemical composition should comply with the provisions of Table 4, and its mechanical properties should comply with the provisions of Table 5. Table 4
0.16-..24
U,27.~0.3
0. t5-~0.35
0. 15~u, :s
J- 2-J.B
≤0.640s0.040
6-020-0. C55
≤33!0.020~, 5
sc- 2h
Note: 11) It is the total phase content, blood fruit is expressed by acid content, it should be 0. 015--D. D63.A1 can partially produce its local chemical products, 2) for the creditor to ensure the whole division, no expansion is required. 5
Point tensile strength
Tensile strength
Elongation
Contraction ratio; 1) When the actual tensile strength exceeds 4N/mm, the elongation is less than 25, the test damage
average loss
2) In the impact test, twenty single values all reach the specified value or the average value of two single values is less than 56 as specified, then it is considered that the mechanical properties of the frog at the end of Section 4.1.2 shall comply with the provisions of Table 6. 3
General tensile strength
: 1) Table 54.2).
Strength
500--499
19y-~690
GI/T549-1596
Fractural shrinkage
2) After heat treatment, the method shown in Table 7 is for impact test and type test
Test pass
Average energy
4.1.3 The manufacturing of anchor parts must be solid steel + the anchor factory must check whether its marks and certificates are in compliance with the items listed and whether the quality, size, chemical resistance and energy of the round steel surface meet the requirements of the corresponding standards and Table 4 and Table 5. 4.1.4 If the parts are made of thorny or brazed materials, they should be made of materials not lower than M2 grade. 4.1.5 The cross bar core material can be made of the same grade as the key chain, and its embedding degree shall not exceed 0.5 and the mechanical properties test can avoid the occurrence of damage. 4.2 Selection of chain and tearing of parts 4.2.1 The cross bar chain links and non-cross bar chain links with a diameter of more than 25mm must be made by flash welding and welding methods approved by the ship inspection department. 4.2.2 The welding of the cross bar chain links and the body should be carried out before heat treatment. The welding position should be perpendicular to the chain. The chain should be smooth and free of defects such as cracks, clamping, pores, and ashes. A short weld should be made on the upper and lower sides of the cross bar to ensure the quality of the weld and obtain the consent of the ship inspection department. The weld length of not less than 25% of the length of the two sides of the cross bar end face can also be welded on the upper and lower sides of the cross bar.
4.2.3 The rings in the anchor book should be made of the same grade of material. 4.2.4 The standard length of the anchor is 27.5m. Except for the anchor book, the number of chain links should be an odd number. 4.2.5 The holes for connecting the unloading and the shackle should be coaxial to facilitate the cross pin. 4.2.6 The ring of the unloading ring and its body should be on the same center line and can rotate freely. 4.3 Manufacturing standards
4.3.? Except for the tolerances in 4.3.2~1.7, the tolerance of the joint should be within 2.5. The other parts of the joint are all good.
4.3.2 The cross-sectional area of the crown should be at least equal to the theoretical calculated area of the special diameter of the chain link or the corresponding part. That is, the lower difference C, which is obtained by measuring the average diameter of the chain diameter four times in the north direction. 4.3.3 The tolerance of the diameter of the chain link in the horizontal direction shall comply with the provisions of Table 7. Table 7 Chain diameter 42-84#7-123#5 The upper and lower tolerances of the nominal diameter are GB/T549-1996 4.3.4 The upper tolerance of the length of the nine-link chain is +2.5 times, and the lower tolerance is 04.3-5. The upper tolerance of the inner diameter of the end link, connecting rod and end hook shall be +2.5% and the lower tolerance is 4.3.6. The upper tolerance of the diameter of the accessory is -5 times, and the lower tolerance is 04.3. 3
The cross bar of the group ring should be placed in the center of the chain link and form a correct angle with the lower ring. Its installation tolerance should meet the following specifications: the maximum center deviation is 10 of the chain diameter, the maximum deviation angle
tolerance is measured according to Figure 11, and the tolerance value is calculated according to formula 1>11
The cross bar of the last ring at both ends of the chain link can be slightly away from the center of the chain link to make it easier to remove the chain link during rotation. 4.4 Quality of the surface of the accessories
4.4.1 There should be no defects such as scratches, delamination and other defects that affect the quality, and there should be no defects such as hindering the assembly and rotation of parts and changing the size of the chain link. 4.4.2 The welds of the combustion rings should be suitable for 7. There should be no defects such as gas deadening, overburning and clamping. 4.4-3 Small surface defects can be eliminated by grinding, but the diameter of the chain link after grinding should be within the tolerance range (see 4.3.3), and the surface of the grinding part and the surface left by the welding part should be flat and overlapped. The grinding degree of the chain crown can be relaxed, but it shall not exceed 5mm. 4.4 After the chain links and attachments have completed the test and inspection, they shall be coated in accordance with GB553. 4.5 Heat treatment 4.5.1 After welding, the whole chain shall be heat treated to eliminate internal defects and ensure the mechanical properties. The heat treatment method shall be as shown in the table. The treatment level shall not be heat treated or normalized. Normalized or normalized such as water or quenching. Normalized, tempered or tempered.That is, the lower diameter difference C is obtained by measuring the chain diameter four times in the horizontal direction. 4.3.3 The tolerance of the chain link diameter in the horizontal direction should comply with the provisions of Table 7. Table?
Chain diameter t
42--84
#7--123
Lower end
Upper end
Does not exceed the nominal
diameter by 5%.
GB/T549-1996
4.3.4 The upper tolerance of the length of the nine-link chain is +2.5 times, and the lower tolerance is 04.3-5.
For the end link, connecting rod and end link, the upper tolerance of the inner diameter should be +2.5%, and the lower tolerance is 4.3.6.
The upper tolerance of the diameter of the accessory is -5 times, and the lower tolerance is 04.3. 3wwW.bzxz.Net
The cross bar of the group ring should be placed in the center of the chain link and form a correct angle with the lower ring. Its installation tolerance should meet the following specifications: the maximum center deviation is 10 of the chain diameter, the maximum deviation angle
tolerance is measured according to Figure 11, and the tolerance value is calculated according to formula 1>11
The cross bar of the last ring at both ends of the chain link can be slightly away from the center of the chain link to make it easier to remove the chain link during rotation. 4.4 Quality of the surface of the accessories
4.4.1 There should be no defects such as scratches, delamination and other defects that affect the quality, and there should be no defects such as hindering the assembly and rotation of parts and changing the size of the chain link. 4.4.2 The welds of the combustion rings should be suitable for 7. There should be no defects such as gas deadening, overburning and clamping. 4.4-3 Small surface defects can be eliminated by grinding, but the diameter of the chain link after grinding should be within the tolerance range (see 4.3.3), and the surface of the grinding part and the surface left by the welding part should be flat and overlapped. The grinding degree of the chain crown part can be relaxed, but it shall not exceed 5mm. 4.4 After the chain links and attachments have completed the test and inspection, they shall be coated in accordance with the provisions of GB553. 4.5 Heat treatment 4.5.1 After welding, the whole chain shall be heat treated to eliminate internal defects and ensure the mechanical properties. The heat treatment method shall be carried out according to the table. The treatment level shall not be heat treated or normalized. Normalized or normalized such as water or quenching. Normalized, tempered or tempered.That is, the lower diameter difference C is obtained by measuring the chain diameter four times in the horizontal direction. 4.3.3 The tolerance of the chain link diameter in the horizontal direction should comply with the provisions of Table 7. Table?
Chain diameter t
42--84
#7--123
Lower end
Upper end
Does not exceed the nominal
diameter by 5%.
GB/T549-1996
4.3.4 The upper tolerance of the length of the nine-link chain is +2.5 times, and the lower tolerance is 04.3-5.
For the end link, connecting rod and end link, the upper tolerance of the inner diameter should be +2.5%, and the lower tolerance is 4.3.6.
The upper tolerance of the diameter of the accessory is -5 times, and the lower tolerance is 04.3. 3
The cross bar of the group ring should be placed in the center of the chain link and form a correct angle with the lower ring. Its installation tolerance should meet the following specifications: the maximum center deviation is 10 of the chain diameter, the maximum deviation angle
tolerance is measured according to Figure 11, and the tolerance value is calculated according to formula 1>11
The cross bar of the last ring at both ends of the chain link can be slightly away from the center of the chain link to make it easier to remove the chain link during rotation. 4.4 Quality of the surface of the accessories
4.4.1 There should be no defects such as scratches, delamination and other defects that affect the quality, and there should be no defects such as hindering the assembly and rotation of parts and changing the size of the chain link. 4.4.2 The welds of the combustion rings should be suitable for 7. There should be no defects such as gas deadening, overburning and clamping. 4.4-3 Small surface defects can be eliminated by grinding, but the diameter of the chain link after grinding should be within the tolerance range (see 4.3.3), and the surface of the grinding part and the surface left by the welding part should be flat and overlapped. The grinding degree of the chain crown can be relaxed, but it shall not exceed 5mm. 4.4 After the chain links and attachments have completed the test and inspection, they shall be coated in accordance with GB553. 4.5 Heat treatment 4.5.1 After welding, the whole chain shall be heat treated to eliminate internal defects and ensure the mechanical properties. The heat treatment method shall be as shown in the table. The treatment level shall not be heat treated or normalized. Normalized or normalized such as water or quenching. Normalized, tempered or tempered.
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