Some standard content:
1CS 25.160. 50
National Standard of the People's Republic of China
GB/T 3131—2001
Tin-lead solder
Tin-lead solder
2001 - 05 - 29 Issued
2001-11-01 Implementation
Issued by the State Administration of Quality Supervision, Inspection and Quarantine
GR/T3131-2001
This standard is a revision of GB/T3131-19882 Lead Soldering Material. It mainly adopts EN29153:1990 Chemical composition and shape of soft solder, EN29153:194 Chemical composition and shape of soft solder alloy, ASTM B32:196* Standard specification for soft solder metal and ASTM B32:282.1986* Soft solder and other foreign standards. Compared with GB/T3131-1988, this standard has made the following changes: 1. Added "Foreword", "Application Standards" and "Order Contents" and other chapters 2. The word "solder" was replaced by "weld". 3. The grades of lead ore were re-expressed according to GB/T6208-1995, such as HLSn53Pb was changed to S-Sn63Pb. 4. The grades A and B were changed to A4, A and B, and the two grades HLSnIP1S and JH.Sn38P17nSb in the original national standard were deleted.
5. The requirements for the total amount of impurities and impurities were added to the chemical composition. The impurities Zn50PhCl and As were adjusted and tightened according to the grade.
6. The Cl element content in SSn50PhCl and the S element in S-Su90PhT were adjusted, and the provisions for whether the rosin of the core agent can be selected as special hydrogenated rosin were added. 8. The requirements for the outer dimensions of the rods and strips in the original national standard were removed, and the supply and demand sides negotiated and 0. The requirements for the percentage of fillers in resin core injections were added, and the needle cutting characteristics were refined. 10. Added Appendix A & Method for Determination of Solder Content 311, added the provisions for the test method of the chemical composition of the cylinder material 12. The requirements for the determination of injection characteristics of the factory 12. Added the requirements and test methods for the continuity and break-off pressure of the flux. Appendix 4 in this standard is a standard appendix, and Appendix B is a reminder appendix. This standard replaces GB/T3131195B marine engine solder 3 from the date of implementation. This standard is proposed by the National Nonferrous Metals Industry. This standard is under the jurisdiction of the China Nonferrous Metals Industry Standards Institute. The standard is drafted by the China Nonferrous Metals Industry Standards Institute of Metrology and Quality, Suzhou Yatong Electronics Co., Ltd. Nonferrous Metal Materials.
Drafters of this standard: Yang Lijuan, Yue Xiaolong, Jiao Wen, Yang Changjin, Shi Hongyan, Tu Shu, Xu Guolian: 1 Fan Miao
National Standard of the People's Republic of China
Tin-lead solder
Tin-lead solder
GQ/T 3131—2001
Generation GB/T3-3196
This standard specifies the requirements, test methods, inspection regulations and marking, packaging, transportation and storage of lead solder. This standard is used for welding of power supply, telecommunication, electrical appliances, power instruments, meters and other boards made by pressure processing.
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the provisions shown are valid. All parties who use this standard should discuss the feasibility of using the latest version of the following standards. GB/T52081995 Needle material model table benzene method GB/TS145-1985 Resin rosin
G6/110574-1$89
Chemical analysis method of storage solder
Hydrogenated rosin
GB/T14080-1992
GR/T35829.2-1995 Needle brake resin flux for soft soldering 3 Requirements
3.1 Product classification
3.1,1 The classification and specifications of pot lead nail materials are shown in Table 1. Table 1
Product type
Nail-free core material
Resin core properties
3.1-2 Types of resin core nailing agents
Types of resin core injections are shown in Table 2.
Huqiu North
Pure resin-based fiber agent
Medium-grade resin-based injection
Active resin-based injection agent
National Quality and Technical Supervision Bureau 2001-05-29 Approved products
Used in various shapes
A core, a core, a jade core
Medium and long
Table 6
Applicable to Ding De Electric for the software certification of radio equipment （For special occasions such as resistors and insulators）
Applicable to the assembly line of non-conductive devices (for high requirements of resistors or) - non-conductive devices and TV sets (for high efficiency soft parts) 200111-01 implementation
3.2 Marking example
GB/T3131-2001
The marking method of silver-lead needle material shall be carried out in accordance with the provisions of GB/T6208. 3.2.1 The solid core wire material made of S-Sn95FbA and with a diameter of 2m is marked as: $S-Sr05PbA2GE/I$131-2001
3 2. 2 The solid core wire material made of S-Sn3PbB and with a diameter of ? 1mm, the type of solder is R The single-core (three-core, five-core) filamentary material of resin is marked as
Wire S-Sn63FbB2-R-1(3,5)GB/T315120013.2.3 Made of SSn35PbA9. The diameter of 10mm is marked as: #-S3PhAGB/3131-21
3.2.4 The marking examples of other shapes shall be agreed upon by the supply and demand parties. 3.3 Chemical composition
3.31 The chemical composition of AA slow-exhaustion lead needle material shall comply with the provisions of Table 3. 33.2 The chemical composition of A-grade potassium-suppressed material shall comply with the provisions of Table 4, and the chemical composition of 33.3B lead nail material shall comply with the provisions of Table 5. B/T3131—2001
100 [U0
10G *0 T00*0
[D:\G100~0
tk1o0*
1x *100100*0
100 *6242
100 '0
5190*0
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GH/T3131
200 03 21 200 233
19153185
200*0!
2no'020'0
20002000
200'0
20'℃
Taizhongtiyibu
--T000'
-TS-55
5'H9--29
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5'61~-5'21
0--8--0*62
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-95--0
VaS9JCSS
WSAHIES-N
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VEIEUNS
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+fs·s
wasy.orus-s
vytogus s
GB/T 3131—2001
C5*cO*
01.290sugc
020S0s00
5G0050'3
9223:9033
cn\snn'
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nzn 'n 4no 'o
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3.4 Size and allowed
GB,T 3.4.1 The dimensions and allowable tolerances of the resin core fiber materials shall comply with the requirements of Table 6. Table 6
Yuan Percentage
2 >0.8~3.3
2.5~6.0
3.4.2 The dimensions of the shaped, strip-shaped and other shaped materials shall be negotiated by the supply and demand parties. 3.5 Resin core fiber agent
3.5.1 Rosin
±0: 05
The rosin in the tree core spray should comply with GB/T8145 and G/T1402 special light inspection fragrant short hydrogenated rosin 3.5.2 The percentage of the newly measured content of injections shall comply with the provisions of Table 7. 3.5.3 Fiber characteristics Standard values .
The characteristics of the injection shall be in accordance with the provisions of Table 8,
water connection rate, +cm
insulation period, mouth
expansion rate, head||tt ||T room
Corrosion resistance of the vessel
3.5.4 Average hook continuity
Should not be fast to bring the test package
Quantity white grams light yellow
Quantity small caution, %
Maximum value, %|| tt||u.15%~c.5%
The surface of the fiber should not be sticky, and the white powder on the surface should be basically unchanged
No false To make the film have elasticity, the needle system inside the material should be pressed evenly and continuously, and there should be no break in the room. Quality index of hollow defect "Number of sections with hollow defects"
Hemp is less than 1.5%
Total number of strands
Surface quality
The surface of the material should be smooth and clean Clean, without cracks, impurities and oil stains, 3.72
Physical properties (no inspection requirement)
Physical properties of needle materials refer to resistance recording B (positive recording) 4 Sleep test method
4.1 Chemical City score||tt ||The chemical composition analysis method of injection materials shall be carried out in accordance with the provisions of GB/T10574. 4.2 Resin core agent
GB/T3131—2001
4.2.1 The determination method of injection quality shall be carried out in accordance with the provisions of 4.2.2 The requirements for each special item shall be in accordance with 5.1, 5.5, 5.6, 5.7.1, 5.8, 5.9, 6.10, 6.11, 6.12, 6.13, 6.14, 6.15, 6.16, 6.17, 6.18, 6.19, 6.20, 6.21, 6.22, 6.23, 6.24, 6.25, 6.26, 6.27, 6.28, 6.29, 6.30, 6.31, 6.32, 6.33, 6.34, 6.35, 6.36, 6.37, 6.38, 6.39, 6.40, 6.41, 6.42, 6.43, 6 Article 5. 1C provisions
4.2.3 needle called Ran continuous sub-determination, according to the specified number (agreement between the supply and demand parties) of each material (volume) sample unit soil, high Yi head 1m load Cut the 60cm long wire into 6 sections with a length of 10mm each, observe the uniformity of the fiber on the cross section, and cut the wire with a shear to observe the continuity of the fiber. 4.2.4 Quality indicators of hollow defects For the determination, take a sample of the specified number (agreement between the supply and demand) of each shaft (roll) of fiber material, take a 2-3m long wire material from the end, cut it into 30°~40° with scissors every 1Umm. Cut the corners and count the number of sections with break defects. 4. 3. External dimensions
The external dimensions of the fiber material shall be measured with a measuring tool of corresponding accuracy. 4.4. Surface quality
The surface quality of the fiber material shall be inspected by daylight. 5. Inspection rules ||tt ||5.1 Inspection and Acceptance
5.1. The needle material should be inspected by the supply force technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. Products should be inspected in accordance with the provisions of this standard. If the inspection results are inconsistent with the provisions of this standard, they should be reported to the buyer within one month after receiving the product. The supply and demand parties will negotiate to resolve the problem. The problem will be mutually recognized by both parties.
5-2 Shrimp feed should be submitted for acceptance in batches: each batch should consist of products of the same brand, type and specification. 5.3 Inspection items ||Quality inspection items are divided into product inspection and type inspection. 5.3.1 All batches of tin materials shall be chemically graded, and their dimensions, allowable deviations, surface quality, tinning agents, velvet properties, and brazing content shall be inspected before delivery. tt||5.3.2 Type inspection
Type inspection shall be carried out for the characteristics of the evaluation agent, and the inspection cycle of the halogen content, expansion rate, dryness is one season, the water content, liquid resistivity, etc. 5.4 Sampling method
5.4.1: Chemical composition sampling, the supplier shall take one sample from each furnace during the preparation, and shall Take at least 50 samples from the material and evenly distribute them to form an analytical sample.
5.4.2 Test the content and characteristics of the relaxant in the resin core material. Take two samples from each batch for analysis. 5.4 3. Surface measurement and external dimension inspection: no less than 10 pieces shall be selected for trial in each batch. 5.4.4 The number of samples to be taken for the uniformity and continuity of the agent shall be determined by the supplier and the buyer. 5.5 Repeated test
In the test of surface quality, external dimensions and the consistency of the agent content, when one test result If the filter element fails to meet the standard, the whole batch shall be deemed as failed or the filter element shall be inspected and the qualified ones shall be separately compiled.
5.6 Determination of test results
If the chemical composition and the content and efficacy characteristics of the resin core injection are unqualified, the batch will be marked as unqualified. Table quality. The outer size is less and the continuity of the check mark is not automatic. When the product is qualified, it will be judged as unqualified piece by piece.
6 Marking, including transfer, transportation and storage
6.1 Product marking
GB/T3131—2001
Each product that has passed the inspection should have the following markings: Table: and) supplier name, address:
b) product name and brand number!
) specification
a) batch number.
62 package me, transportation and Storage
6.2.1 Wires with a diameter of less than 3 mm should be stored on a spool. The net weight is usually 1 kg. The reel weight can also be determined according to user requirements. 62.2 Wires with a diameter of more than 3 mm should be stored on a spool. 6.2.3 Needle materials are packed in paper, wooden or calcium plastic boxes, and the net denier of each box shall not exceed 25. 6.2.4 Each box of products shall be accompanied by Product combination certificate. 6.2.5 During transportation and treatment, the fiber should be protected from damage and chemical damage. 6.3 The base of the batch of fiber shall be accompanied by a quality certificate with the following information: supplier name and address;
b) Product name,
c) Brand:
d) Specification,
) Net weight and number of pieces;
Batch number: ||tt ||more) various test results and the seal of the supplier's technical supervision department, h) this standard number:
) production date.
7 Order form (or contract)
The order form (or contract) for materials listed in this standard shall include the following information: 7.1 Product name
7.2 Brand;
7.3 Specifications:
7.4 Re-recording or number of pieces:
7. 5A standard pin!
7.6 Others
A1 Sampling
GB/T 3131—2001
Appendix A
(Appendix to the standard)
Determination method of the content of the emollient
Weigh the surface of the resin core fiber material with a clean surface 6: A2 Cleaning
Wash the surface of the test material with acetone first, then with distilled water, then with deionized water, and finally with ethyl acetate and dry. A3 Method
Accurately determine the test volume W in item A2 (accurate to 0.001). Put the sample into a cup, add 100IuI of triethanolamine, heat the core material to roast, and completely separate the agent from the core, cool it to solidify: Take the solidified material, wash it with water, then wash it with water + dry it and weigh it (accurate to 0.001). A4 Deletion
Cabinet according to the following formula to calculate the percentage of
needle cutting content (%) = W
W: x100%
Appendix B
(Appendix to the report
Physical properties of fiber materials
S·Sr:95Pb
SS:90PL
S-SuiiPL
S-saGorb.
S-SnooFhSb
S.SaLe SPL
SSn5apt
-5rPbsh
S-Sn45Pl
Zhou Xianglu
Fusion defect, heart
(approximately)
resistance army,
ton/m()
Shichuan Yi
Electrical. Electronic industry, high-end equipment
Electrical, electronic: industry, printing group, installation technology, air T industry and is a national teaching industry, export industry (Electric machines, receivers, quartz clocks) aviation, continuous technology
S-Sn40Pb
SSuPas
5-Sn357b
$-Sn30Pb.
S-Sn30PbSb
Sn251bSb
S-Sn20PE,
S-Sri&PLSU
s-SnloPb
s-SuSPL||t t||S-SuaPb
S-SnsoPbCd
S-Sn5PbAg
g.nGSPbAg
S-SuuPLSbP
S-S6uPLSbP
State Council,
(Route:
GB/T3131—2001
B1(end)
Degree block: portWww.bzxZ.net
u's)
Main Meichuan||t t||Sheet metal, wire welding, electric wire, fast heating equipment, radiation assessment, high temperature lamp, cold plate manufacturing, fast metal, cabinet metal, weak furnace grease and its extension high temperature use
bearing bush, and the whole baking wire welding, hot sealing pair, separate welding skin and its trust low temperature welding
electrical industry, commercial spare parts
-Sn63Pb but with good quality and other aspects of SuSn6sPb
Used in the occasions with high requirements on resistance to chemicals and lightness.
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