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一、引言 不久前,在航天部统一部署下,由我厂生产一批导弹舱体供×厂配套,需方提出对舱壁、肋骨及单铸镁拉棒除按QJ513—69和HB964—70技术条件规定的测试项目外,增添测定屈服强度δ_(0.2)的指标,并作为验收的依据。由于特定的技术条件的具体规定,取样部位长度、宽度限制,其舱壁、肋骨、单祷镁拉棒加工约试件几何形状、尺寸,表面粗糙度等如图1、图2、图3所示:
I. INTRODUCTION Not long ago, under the unified deployment of the Ministry of Aeronautics and Astronautics, a batch of missile tanks were manufactured by our factory for the supply of X plants. The demand side has proposed that in addition to the QJ513-69 and HB964-70 pull rods for bulkheads, ribs and single- Technical conditions of the test items, add the determination of yield strength δ_ (0.2) indicators, and as a basis for acceptance. Due to the specific provisions of the specific technical conditions, sampling the length of the site, the width of the limit, the bulkhead, ribs, single pillars magnesium rod processing about the specimen geometry, size, surface roughness, such as Figure 1, Figure 2, Figure 3 Show: