BS 4129:1990
Current
The latest, up-to-date edition.
Specification for welding primers and weld-through sealants, adhesives and waxes for resistance welding of sheet steel
Hardcopy , PDF
English
30-11-1990
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Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Classification
4. Coating procedures
4.1 Sampling
4.2 Mixing
4.3 Application of material to test specimen
4.4 Testing
5. Welding and test procedures
5.1 General
5.2 Test specimens
5.3 Application of coating
5.4 Measurement of surface coating
5.5 Type of machine
5.6 Machine settings
5.7 Contact resistance tests
5.8 Electrical continuity tests
5.9 Weldability tests
5.10 Flammability tests
5.11 Toxicity/fume tests
6. Retests
7. Marking
Appendix
A. Contact resistance test
Tables
1. Recommended applied forces for contact resistance
measurements
Figures
1. Current record test specimen
2. Circuit used for detecting the onset of welding
current flow
3. Chart record to indicate the onset of welding
current flow
4. Typical weldability lobe
5. Test specimen assembly for spot welding flammability
test with gun application
6. Test specimen assembly for spot welding flammability
test with spray or brush application
7. Order of welding for spot welding flammability tests
8. Arrangements of potential pick-up points for
measurement of resistance
9. Arrangement for static surface resistance
measurement at steady current
Requirements for resistance welding characteristics. Suitable resistance processes are spot, seam and projection welding.
| Committee |
WEE/29
|
| DevelopmentNote |
Supersedes 88/77847 DC and BS 4129(1967) (07/2005) Reviewed and confirmed by BSI, November 2012. (10/2012)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This British Standard specifies requirements for the resistance welding characteristics of the following coatings:
- welding primers;
- weld-through sealants and adhesives;
- weld-through waxes.
The resistance welding processes suitable for welding primers and weld-through sealants, adhesives and waxes are spot, seam and projection welding.
NOTE 1 This standard specifies requirements for resistance stud welding but does not cover arc stud welding.
NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.
| BS 4215-5:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for electrode back-ups and clamps |
| BS 4577:1970 | Specification for materials for resistance welding electrodes and ancillary equipment |
| BS 4215-8:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for insulation caps and bushes |
| BS 4215-1:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for resistance spot welding electrode adaptors |
| BS 1140:1980 | Specification for resistance spot welding of uncoated and coated low carbon steel |
| BS 3900-A1:1970 | Methods of test for paints. Tests on liquid paints (excluding chemical tests) Sampling |
| BS 4215-6:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for electrode adaptors, female taper 1:10 |
| BS 4215-2:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for straight resistance spot welding electrodes |
| BS 6691-1:1986 | Fume from welding and allied processes Guide to methods for the sampling and analysis of particulate matter |
| BS 6691-2:1986 | Fume from welding and allied processes Guide to methods for the sampling and analysis of gases |
| BS 4215-3:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for the dimensions of electrode taper fits |
| BS 4215-7:1987 | Resistance spot welding electrodes, electrode holders and ancillary equipment Specification for male electrode caps |
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