Weld stainless steel sheet and plate in all positions using the gas metal arc or flux cored arc welding process
Purpo This unit standard 葡萄酒的种类covers welding of stainless steel sheet and plate in all positions to Class B of AS/NZS 1554.6 or equivalent, using either the gas metal arc welding (GMAW) or the flux cored arc welding (FCAW) process.
People credited with this unit standard are able to: prepare to weld stainless steel in all positions using the GMAW or FCAW process; weld stainless steel in all positions using the GMAW or FCAW process; and inspect and repair welds to industry standard.
Subfield | Mechanical Engineering |
Domain | Welding |
Status | Registered |
Status date | 渺怎么组词 22 May 2009 |
| 花圃是什么意思 Date version published | 22 May 2009 |
Planned review date | 31 December 2014 |
Entry information | Recommended: Unit 2674, Weld stainless steel plate in the downhand positions using the gas metal arc and flux cored arc welding process风丹, or demonstrate equivalent knowledge and skills. |
Accreditation | Evaluation of documentation and visit by NZQA. |
Standard tting body (SSB) | Competenz |
Accreditation and Moderation Action Plan (AMAP) reference | 0013 |
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This AMAP can be accesd /framework/arch/index.do.
Special notes
新娘手捧花1 Welder qualification to an equivalent industry standard is acceptable evidence for the practical welding of this unit standard, provided the test pieces are of similar thickness and welded in the same positions.
2 References
AS/NZS 1554.6:1994, Structural steel welding – Welding stainless steels for structural purpos.
Health and Safety in Welding. Wellington: Department of Labour, 2006. Available from vt.nz.
3 Definitions
FCAW – Flux Cored Arc Welding.
GMAW – Gas Metal Arc Welding, also referred to as Metal Inert Gas (MIG) welding.
GMAW-P – Puld Power Gas Metal Arc Welding.
Industry practice – refers to the safe and sound practices accepted by the fabrication industry养兔子要注意什么.
Industry standard – refers to AS/NZS 1544.6 Class B, or equivalent.
Safe working practice – refers to formal worksite or company safety policies, or the practices established by Health and Safety in Welding or similar codes.
Stainless steel – typically refers to the austenitic stainless steel grades AISI 304L and 316L, but may also include other materials such as the duplex stainless steels.
Welding procedure – refers to a written work instruction providing the necessary technical details for a specific welding application.
Elements and performance criteria
Element 1
Prepare to weld stainless steel in all positions using the GMAW or FCAW process.
Performance criteria
1.1 Work area is assd for hazards associated with the GMAW or FCAW process and all necessary precautions taken in accordance with safe working practice.
Range electric shock, arc radiation, fire, explosion, fumes and gas, heat, confined space, chemical.
1.2 Equipment is lected to meet welding procedure requirements.
Range power source rating and duty cycle, wire feed system and gun, shielding gas supply, welding cables, work clamp.
1.3 Equipment is asmbled and maintained ready for u in accordance with manufacturer’s instructions.
Range wire feed system; gun liner, nozzle and contact tip; shielding gas supply; welding cables; work clamp.
1.4 Stainless steel is prepared and asmbled in accordance with welding procedure.
Range preparation and asmbly are limited to – cleaning, providing root face where required, tack welding to correct alignment and pret.
1.5 Consumables are lected in accordance with welding procedure.
Range electrodes are identified by specification and classification; shielding gas are identified by brand name and composition.
Element 2
Weld stainless steel in all positions using the GMAW or FCAW process.
Range evidence is required of 5 welds, using either GMAW, GMAW-P, or FCAW:
2 to 3 mm sheet – 2F and 3F positions;
6 to 8 mm plate – 2G, 3F, and 3G positions.
Performance criteria
2.1 Safety procedures are followed and personal protective equipment is worn in accordance with safe working practice.
2.2 Electrodes are stored and handled in accordance with manufacturer’s specifications.
2.3 Measures to minimi welding distortion are applied in accordance with industry practice.
Range may include but is not limited to – weld quence, restraint, backstepping.
2.4 Welds are deposited on stainless steel to industry standard and in accordance with welding procedure.
2.5 Welds are cleaned in accordance with industry practice.
Element 3
Inspect and repair welds to industry standard.
Performance criteria
3.1 Weld imperfections are identified by visual examination and workshop tests.
Range workshop tests – nick break, fillet break-over, bend, macro examination. Evidence of two tests is required.
