MIL-W-47091A (MI)
3.5.1 Welds in steel. Completed welds in mild steel, high strength mild steel, low alloy steel, or corrosion resistant steel shall be thoroughly cleaned by chipping and wire brushing to remove scale and flux prior to subsequent operations.
3.5.2 Gas welded aluminum parts. Gas welded aluminum alloy parts shall be defluxed by a suitable method immediately after welding. This may be accomplished by submerging the parts in 10% sulfuric acid solution for 20 to 30 minutes followed by a thorough rinse in clean running water.
3.6 Penetration. Penetration of fillet welds when cross sectioned and examined as specified herein shall equal 15 to 25% of the base metal thickness in material of not less than 0.25 inch thick. In material greater than 0.25 inch thick, penetration shall be not less than 0.0625 inch. Butt welded joints shall have 100% penetration unless
partial penetration is permitted by symbol call out.
3.7 Workmanship. Workmanship shall be in accordance with high grade commercial practice covering this class of work. Weld beads shall be reasonably smooth and uniform. Evidence of excessive undercutting cold laps, porosity blow holes, cracks or slag inclusion shall be cause for rejection.
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.
4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractor's overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective
material, either indicated or actual, nor does it commit the Government to accept defective material.
4.2 Lot. For purposes of acceptance, a lot of metallic parts welded under this specification shall consist of all the units of a single production order submitted for inspection at one time.
7
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business