大型铸锻件
大型鑄鍛件
대형주단건
HEAVY CASTING AND FORGING
2014年
6期
16-20
,共5页
SA-765 GrⅢ低温钢%封头%成型温度
SA-765 GrⅢ低溫鋼%封頭%成型溫度
SA-765 GrⅢ저온강%봉두%성형온도
SA-765GrⅢlow-temperature steel%head%hot forming temperature
对SA-765GrⅢ低温钢压力容器厚壁封头热成型加热温度进行了研究和探讨。试验结果表明：成型温度越低，越有利于晶粒细化；温度过低时由于压机设备限制成型困难；成型温度过高，晶粒有明显长大现象。当成型温度不高于1000℃时，SA-765GrⅢ钢的力学性能可以通过后续标准热处理获得改善。
對SA-765GrⅢ低溫鋼壓力容器厚壁封頭熱成型加熱溫度進行瞭研究和探討。試驗結果錶明：成型溫度越低，越有利于晶粒細化；溫度過低時由于壓機設備限製成型睏難；成型溫度過高，晶粒有明顯長大現象。噹成型溫度不高于1000℃時，SA-765GrⅢ鋼的力學性能可以通過後續標準熱處理穫得改善。
대SA-765GrⅢ저온강압력용기후벽봉두열성형가열온도진행료연구화탐토。시험결과표명：성형온도월저，월유리우정립세화；온도과저시유우압궤설비한제성형곤난；성형온도과고，정립유명현장대현상。당성형온도불고우1000℃시，SA-765GrⅢ강적역학성능가이통과후속표준열처리획득개선。
This paper studies and discusses heating temperature of hot forming for SA-765 Gr.Ⅲ low-temperature steel thick-walled pressure vessel head .The test results show that the lower hot forming temperature is , the more bene-ficial to grain refinement is , but it is difficult for too low temperature forming due to the press equipment , and hot form-ing temperature is too high , and grain is grewing up obviously .When hot forming temperature is not higher than 1 000℃, mechanics properties of SA-765 Gr.Ⅲsteel can be improved by subsequent standard heat treatment .
