Experiences have proved that the interior structure of bit matrix in more uniform, but using the double heat preservation method.Thus the mechanical pr...

• 实践证明,采用双保温工艺烧结钻头,可使其胎体内部结构更加均匀,从而改善和提高了胎体的力学性能,有效地解决了钻头使用中胎体出现的裂纹问题。