高刚度低应力数控机床铸件的研究与生产
Research and Production of High Stiffness and Low stress CNC Machine Tool Castings
李云龙1
作者信息
- 1. 玉溪锦福智能设备有限公司,云南玉溪 653100
- 折叠
摘要
为实现树脂砂工艺条件下机床铸件高刚度、低应力的要求,通过实施将碳当量提高至3.8%以上,硅碳比控制在 0.69～0.74,适当添加微量Sn、Cr、N等合金,静置高温铁液和强化孕育处理等措施,可实现HT300 机床铸件:抗拉强度≥300 MPa,硬度 200～240 HBW,弹性模量 120～135 GPa,铸态残余应力≤50 MPa.
Abstract
In order to achieve the requirements of high stiffness and low stress of machine tool castings under resin sand process conditions,the carbon equivalent is increased to more than 3.8%,the silicon-carbon ratio is controlled at 0.69～0.74,the appropriate addition of trace Sn,Cr,N and other alloys,the static high temperature liquid iron and the intensive inoculation treatment can achieve HT300 machine tool castings:Tensile strength≥300 MPa,hardness 200～240 HBW,elastic modulus 120～135 GPa,as-cast residual stress≤50 MPa.
关键词
高碳当量/高硅碳比/高刚度/低应力/均匀性Key words
high carbon equivalent/high silicon-carbon ratio/high stiffness/low stress/homogeneity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据