01/20/2016

angle of twist drill (1)

01/20/2016 langfeng carbide powder

►Twist drill mainly include rake angle and back angle, angle of the two had a great influence on drilling, angle before the bit edge to linger-sometimes constantly decreases, and then angle from the bit edge to linger-sometimes constantly [Read More]

Niobium carbide profession introduction

01/20/2016 langfeng carbide powder

Product introduced: Niobium carbide powder,Chemical formula NbC,Molecular weight 104.92,Density 7.56g/cm3 ,Melting point 3490ºC,Boiling point 4300ºC,Carbon content 11.45%.Niobium carbide is brown-gray metallic powder with purple lustre．The powder also is a high melting point and high hardness material with high [Read More]