摘要
为了进一步提高硬质合金的使用性能和探讨激光工艺对硬质合金的表面作用，叙述了高钴硬质合金激光表面相变硬化淬火工艺参数，如激光功率、扫描速度和光斑直径的选择，再通过处理后合金硬度、矫顽磁力、抗弯强度等物理力学性能分析，发现激光能量密度和合金抗弯强度有一定的关系，进而找到了合理的激光工艺。通过激光表面相变硬化淬火处理后，ＹＧ２０硬质合金的抗弯强度提高１０％以上，维氏显微硬度提高８０％，耐磨性提高１．６倍，使用寿命也有所提高。
The relationship between the energy density of the laser beam used for surface phase transition hardening quenching and bending strength of the cobalt cemented carbide treated by laser was found by analysing physical and mechanical properties of the cemented carbide treated, and the reasonable laser treatment procedure was found too. After laser quenching, the bending strength, Vickers microhardness and weartear resistance of YG20 cemented carbide increase 10%, 80% and 160%, respectively.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1998年第1期89-94,共6页
The Chinese Journal of Nonferrous Metals
基金
天津市自然科学基金
