论文部分内容阅读
选用 D6AC 研制壁薄、长径比大的高压燃烧室壳体。为保证壳体具有高的强韧性能和尺寸精度,根据 D6AC 钢在500—600℃之间有深而宽的奥氏体湾区的特性,采用530℃分级淬火工艺。本文简述壳体制作过程和方法以及性能测试结果。试验表明,所采用的工艺可有效地控制热处理淬火变形,使壳体有良好的强韧配合;回火定型校正对有椭圆度的工件也有良好的效果。对 D6AC 钢二次高温回火与一次高温回火组织和性能的差异,尚需进一步研究。
Selection of D6AC developed wall thickness, high aspect ratio of the high-pressure combustion chamber shell. In order to ensure the shell has high toughness and dimensional accuracy, according to D6AC steel between 500-600 ℃ deep and wide features of the austenitic Bay, the use of 530 ℃ classification quenching process. This article briefly describes the shell making process and method and performance test results. Experiments show that the process used can effectively control the heat treatment quench deformation, so that the shell has a good tough fit; tempering stereotypes correction of the workpiece with ovality also have good results. D6AC steel secondary tempering and a high-temperature tempering the differences in microstructure and properties, still need further study.