为了开发纵横向性能一致的叶片钢,对锻造工艺进行了改进.选取4种不同锻造工艺的成品,在边部、半径1/2处、中心部位进行取样,测量其性能,结果表明: 1Cr12型耐热钢棒在δ-Fe铁素体质量分数小于0.2 %,w(S)为0.001 %,钢具有高的洁净度的情况下,采用快锻机四镦四拔锻造,锻制钢棒纵、横向冲击功的比值达到1.16~1.26;若采用快锻机墩拔开坯与精锻机联合成材,锻制棒材纵横向冲击功比值可达到不大于1.06.
To develop the blade steels with uniform longitudinal and transverse property, the forging process was improved.Four finished products forged by different processes were chosen, and samples were taken from the edge, half radius and the center of each bar for measuring their properties.The results showed that if the δ-Ferrite content was less than 0.2 %, the sulfur content was 0.001 % and the steel was very clean, the ratio of longitudinal and transverse impact energy of 1Cr12 heat resistant steel bars could reach 1.16-1.26 after "four upsetting and four drawing" forging.The ratio of longitudinal and transverse impact energy of 1Cr12 heat resistant bars could be less than or equal to 1.06 after "bloomed by open die forging press through upsetting and drawing + finished by radial forging machine" forging.
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