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我厂用３０ＣｒＭｎＳｉＡ钢制造的薄壁壳体，其外形为３６０ｍｍ×１６５０ｍｍ，壁厚５ｍｍ。壳体是在高压应力状态下工作，要求壳体必须具备高的强度、高的塑性、高的断裂韧度以及高的屈强比。设计要求淬火回火后硬度为３８～４２ＨＲＣ，强度为σｂ＝１３８～１４０...
I plant with 30CrMnSiA thin-walled steel shell, its shape is 360mm × 1650mm, wall thickness 5mm. The housing is under high pressure stress conditions, requiring the housing must have high strength, high plasticity, high fracture toughness and high yield ratio. After the design requirements of quenching and tempering hardness 38 ~ 42HRC, strength σb = 138 ~ 140 ...