MIL-STD-2219 Fusion Welding for Aerospace Applications S/S by AWS-D17.1The scope of this document is to provide minimum requirements for weld filler materials, workmanship, inspection and record requirements for fusion welding of alloys applicable to aircraft, missiles, other aerospace equipment, their parts and accessories.

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MIL-STD-2219A

w/CHANGE 1

5.3 Welding requirements

5.3.1 Identification

Each welder/welding operator shall identify his work by interim marking, adjacent to the weld joint or by marking the sign-off sheet of 4.9.  The interim identification shall remain adjacent to or with the weld until final weld inspection.

5.3.2 Qualified weld settings

A welding procedure specification (WPS) shall be established for each production Class A and B weld (see Appendix B).  The WPS shall be based on the appropriate PQR. Qualified weld settings established in accordance with section 4 are required for machine welding of Class A and B welds.  Qualified weld settings are required for manual welding of Class A and B welds.  Allowable variations from the established weld settings for machine welding are acceptable if within ±10%.  If meter readings are used, the variation shall be based on the mean reading.

5.3.3 Reproducibility of qualified weld settings

5.3.3.1 When a sample is required

A sample shall be made to demonstrate the reproducibility of the weld settings whenever one of the following situations occurs:

a.   A change in the location of the welding equipment (machine welding only). b.   A change in the welding power supply (machine welding only).

c.    The installation of electrical components which would affect welding parameters.

d.        A change in tooling which will affect heat dissipation rate from the weld area of the joint or which will affect the shielding gas effectiveness.

5.3.3.2 Sample preparation

The reproducibility sample shall consist of a simulated or actual production joint (if production joint will be less than 10 inches in length) or 10 inches of a simulated or actual joint (where the production item requires at least a 10 inch long weld).  The reproducibility sample shall meet the quality requirements of the production item.

5.3.4 Requalification of weld settings

Requalification of the affected machine settings shall be required when:

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