316L不锈钢粉末的温压工艺研究  

Warm compaction technics of 316L stainless steel powder

作　　者：李春香[1] 曹顺华[1] 邹仕民[1] 张秀芳[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083

出　　处：《粉末冶金材料科学与工程》2008年第1期35-39,共5页Materials Science and Engineering of Powder Metallurgy

摘　　要：研究316L不锈钢的温压行为,分析温压工艺参数对压坯密度的影响。结果表明:在粉末加热温度为90℃、模具温度120℃、润滑剂含量0.8%(质量分数)的工艺条件下,压制压力为784MPa时,压坯密度达6.92g/cm3;经1130℃烧结后密度为7.06g/cm3,硬度为HRB76。还对温压与室温模压(添加0.7%硬脂酸锌)后的压坯密度和弹性后效进行了比较:确证温压压坯密度比室温模压密度提高约0.2g/cm3,弹性后效较室温模压的小。Warm compaction behavior of 316L stainless steel was investigated, influences of processing parameters of warm compaction on green density of 316L stainless steel were studied. Results show that, when compacting powder and die temperatures are 90 ℃ and 120 ℃ respectively, and lubricant content in powder is 0.8%（mass percent）, the density of 316L stainless steel powder of 6.92 g/cm^3 can be achieved under the compactive pressure of 784 MPa; the density is 7,06 g/cm^3, and the hardness is HRB76 after solid state sintering at 1 130 ℃. Moreover, warm compaction was compared to traditional mould pressing （adding 0.7% zinc stearate） via the green density and delayed elasticity, results show the green density of warm compaction is about 0.2 g/cm^3 higher and delayed elasticity is smaller.

关 键 词：温压 316L不锈钢 压坯密度 烧结 

分 类 号：TF124.37[冶金工程—粉末冶金]