理化检验-物理分册
理化檢驗-物理分冊
이화검험-물리분책
Physical Testing and Chemical Analysis Part A:Physical Testing
2015年
10期
701-705,710
,共6页
潘恒沛%刘瑛%王经涛%冯虎田%田毅%田茂林
潘恆沛%劉瑛%王經濤%馮虎田%田毅%田茂林
반항패%류영%왕경도%풍호전%전의%전무림
GCr15 轴承钢%球化退火%碳化物%定量金相
GCr15 軸承鋼%毬化退火%碳化物%定量金相
GCr15 축승강%구화퇴화%탄화물%정량금상
GCr1 5 bearing steel%spheroidizing annealing%carbide%quantitative metallography
借助于扫描电镜分析和显微硬度测试等方法,对滚珠丝杠用 GCr15轴承钢在不同热处理条件下的等温球化退火效果进行了研究,并通过定量金相的方法,分析统计了不同热处理工艺参数条件下碳化物的形貌及其分布.结果表明:GCr15轴承钢在790℃奥氏体化、冷却速率为20℃.h-1的条件下球化退火后,其硬度分布最均匀,球化退火效果最好;此时碳化物平均粒径标准差最小,平均长短轴比值不大于2.1,颗粒圆度不小于0.17,粒径为0.5~1.1μm 的碳化物所占百分比约为50%.该方法可定量评定 GCr15轴承钢的球化质量级别,对实际生产有一定的指导意义.
藉助于掃描電鏡分析和顯微硬度測試等方法,對滾珠絲槓用 GCr15軸承鋼在不同熱處理條件下的等溫毬化退火效果進行瞭研究,併通過定量金相的方法,分析統計瞭不同熱處理工藝參數條件下碳化物的形貌及其分佈.結果錶明:GCr15軸承鋼在790℃奧氏體化、冷卻速率為20℃.h-1的條件下毬化退火後,其硬度分佈最均勻,毬化退火效果最好;此時碳化物平均粒徑標準差最小,平均長短軸比值不大于2.1,顆粒圓度不小于0.17,粒徑為0.5~1.1μm 的碳化物所佔百分比約為50%.該方法可定量評定 GCr15軸承鋼的毬化質量級彆,對實際生產有一定的指導意義.
차조우소묘전경분석화현미경도측시등방법,대곤주사강용 GCr15축승강재불동열처리조건하적등온구화퇴화효과진행료연구,병통과정량금상적방법,분석통계료불동열처리공예삼수조건하탄화물적형모급기분포.결과표명:GCr15축승강재790℃오씨체화、냉각속솔위20℃.h-1적조건하구화퇴화후,기경도분포최균균,구화퇴화효과최호;차시탄화물평균립경표준차최소,평균장단축비치불대우2.1,과립원도불소우0.17,립경위0.5~1.1μm 적탄화물소점백분비약위50%.해방법가정량평정 GCr15축승강적구화질량급별,대실제생산유일정적지도의의.
The isothermal spheroidizing annealing effect with different temperatures and cooling rates was investigated by SEM analysis and hardness test,and the morphology and distribution of the carbide under different process parameters were analyzed by quantitative metallography methods.The results show that the hardness distribution was most uniform and the spheroidizing annealing effect was best when the GCr15 bearing steel was austenitized at 790 ℃ and cooling at 20 ℃.h-1 .In this case,the standard deviation about average particle diameter of carbide was the minimum,the ratio of the major axis and minor axis was not greater than 2.1,the particle roundness was not less than 0.17,and percentage of 0.5~1.1 μm carbide was about 50%.This method can provide some references to accurately and quantitatively evaluate the spheroidizing annealing effect of GCr15 bearing steel,and it is significant for practical production.