The Research on Process of Deep Cryogenic Treatment for W4Mo3Cr4VSi HSS Drill

Hong Juan Yan; Hong Hai Xu; Ying Liu

doi:10.4028/www.scientific.net/AMR.97-101.457

Paper Titles

Effects of Shot-Peening on Cr-Rare Earth-Boronizing at Low Temperature for Medium Carbon Steel
p.437

Bifurcation and Chaos of a 4-Side Simply Supported Rectangular Thin Electro-Magneto-Elastic Plate in Many Fields
p.442

Investigation on Low Cycle Fatigue Life of SC Notched Specimens
p.449

Effect of Reactive-Al₂O₃ Addition on the Pore Size Distribution and Thermal Conductivity of Carbon Blocks for Blast Furnace
p.453

The Research on Process of Deep Cryogenic Treatment for W4Mo3Cr4VSi HSS Drill
p.457

Effects of Nb Doping on Dielectric and Ferroelectric Properties of Bi₄Ti_3-xNb_xO_12+x/2 Ceramics
p.461

Statistical Analysis of the Effect of Na₂CO₃ as Additive on the Reduction of Vanadic-Titanomagnetite-Coal Mixed Pellets
p.465

Study on Crack Retardation with the Consideration of Crack Surface Roughness by FEM
p.471

Effects of Mg-Doping on Structure and Electric Properties of Mg_xZn_1-xO:Al Ceramics
p.475

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101The Research on Process of Deep Cryogenic...

The Research on Process of Deep Cryogenic Treatment for W4Mo3Cr4VSi HSS Drill

Abstract:

The Deep Cryogenic Treatment(DCT) process of W4Mo3Cr4VSi HSS was studied by orthogonal experiment method. The paper analysed the effect of various DCT process parameters on mechanical properties and observed microstructure before and after DCT treatment by the SEM. The results show that the effect of soaking temperature on the properties of drill is the first factor, the soaking time is second and the cooling rate is third. DCT enhances the transformation of austenite to martensite, and distributable carbide particles are precipitated from martensite. Therefore DCT increase hardness and enhance wear resistance of twist drill.