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Supplementary wax coating weight test (If Applicable) |
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|  MIL-L-45403D
4.4.3 Testing. Testing is described in the First Article and Quality
Conformance Inspection Tables.
4.4.4 Inspection equipment. The inspection equipment required to perform
the examinations and test prescribed herein is described in the "Paragraph
Reference/Inspection Method" column in the tables starting with 4.4.2.1. The
contractor shall submit for approval inspection equipment designs in
accordance with the terms of the contract. See Section 6 of MIL-A-48078 and
6.2 herein.
4.5 Methods of inspection.
4.5.1 Supplementary wax coating weight test (If Applicable). The sample
links shall be tested by weighing the links together to the nearest
milligram. The supplementary wax coating shall then be completely removed
from the links by trichloroethylene or trichloroethane vapor, and the links
dried and reweighed. The difference between the total weights before and
after removal of the supplementary wax coating divided by the number of links
tested shall be considered as the weight of the supplementary wax coating of
each link.
4.5.2 Carburization or decarburization test. The sample links for this
test shall be cross sectioned along the plane of the center line of the
connecting loop which is perpendicular to the center line of the retaining
loops. The cross section of the sample links shall be polished, etched with a
3 to 5 percent Nital solution and examined under a microscope of not less than
500 power to determine compliance with the carburization or decarburization
requirements on Drawing F7268389.
4.5.3 Belt strength test. The sample links shall be tested using
inspecting equipment in accordance with Drawing F11836918 and C11836917.
Links shall be assembled into belts of six links per belt and placed into the
test fixture. The 55 pound load shall be applied at a uniform rate and the
belt shall remain under tension for a minimum of 30 seconds. Upon removal of
the load, the links shall show no evidence of separation. At the completion
of the belt strength test, the links shall be scrapped.
4.5.4 Cartridge stripping test. The sample links shall be tested using
inspection equipment in accordance with Drawing F11836919. The links shall be
placed in a holding fixture and an approved NATO brass cartridge case in
accordance with Drawing D10521997 inserted into the link to the depth
specified on Drawing F7268389. The load shall then be gradually applied until
the case is stripped from the link. During assembly and disassembly
operations while performing the stripping test, the cartridge cases shall be
visually examined for evidence of shaving resulting in the removal of metal.
The cases shall not be reused.
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