MIL-DTL-45210B(MR)
3.
REQUIREMENTS
3.1
First article. When specified in the contract or purchase order (see 6.2)
and before production has commenced, samples of the specified item shall be made
available to the contracting officer or his authorized representative for
approval in accordance with 4.2 - 4.5. The approval of the first article
samples authorizes the commencement of production but does not relieve the
supplier of responsibility for compliance with all applicable provisions of this
specification. The first article samples and test forgings shall be
manufactured by the process proposed for use on production.
3.2
Recorded welding procedures. Unless otherwise specified in the contract
or order, the contractor, prior to production fabrication of any weldment, shall
establish or have the manufacturer establish and record the cleaning and welding
procedures to cover all welding to be performed under this specification. A
change in any of the factors listed in table I shall require revision of the
recorded test procedures.
3.3
Welding factors. The factors to be included in the welding procedure
shall be as shown in table I.
3.4
Surface preparation. The material surfaces shall be cleaned by a suitable
method to remove dirt, oils, and deleterious oxides in the weld area. All
required coatings or sealants shall be included as a part of the recorded
welding procedure and shall not be considered foreign matter.
3.5
Welding equipment requirements.
3.5.1 Welding machine. The welding machine shall consist of a suitable source
of electrical energy, suitable electrodes, means of adequately cooling the
electrodes, and a means of reliably controlling and indicating the magnitude of
the current, the welding force, and the time of current flow to fulfill the
requirements specified herein. The force and current controls shall operate so
that there is an absence of current flow (i.e. zero current) prior to applying
the welding force at the electrodes. Also, the current shall be cut off before
the force is removed.
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