Experimental Research on Deep Cryogenic Treatment Process of YT30 Cemented Carbide Inserts

2010 ◽  
Vol 139-141 ◽  
pp. 702-705 ◽  
Author(s):  
Hong Juan Yan ◽  
Hong Hai Xu ◽  
Xin Min Li
Keyword(s):  
Orthogonal Experiment ◽  
Cryogenic Treatment ◽  
Cemented Carbide ◽  
Deep Cryogenic Treatment ◽  
Tempering Temperature ◽  
Before And After ◽  
Orthogonal Experiment Method ◽  
Enhance Wear Resistance ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

Deep Cryogenic treatment (DCT) is a one time permanent process, carried out in such a way that the material is slowly cooled down to the cryogenic temperature, after which it is held at that temperature for a specified period of time and is heated back to room temperature at slow rate followed by low temperature tempering. In this study, the orthogonal experiment method was used to study the DCT process of YT30 cemented carbide inserts. The primary relation of the different factors of DCT was analyzed. TH300 sclerometer was used to measure the hardness of inserts. The microscopes were used to observe the wearing profiles of inserts and microstructures before and after DCT. The orthogonal experiment results show that the effect of soaking temperature on the properties of inserts is the first factor, the soaking time is second one, the cooling rate is third one, and the last one is the tempering temperature. DCT improves the multi-type martensite transformation of Co. Therefore DCT increases hardness and enhance wear resistance of the cemented carbide inserts.

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

2010 ◽  
Vol 97-101 ◽  
pp. 457-460 ◽  
Author(s):  
Hong Juan Yan ◽  
Hong Hai Xu ◽  
Ying Liu
Keyword(s):  
Orthogonal Experiment ◽  
Cryogenic Treatment ◽  
Deep Cryogenic Treatment ◽  
Soaking Time ◽  
Experiment Method ◽  
Before And After ◽  
Orthogonal Experiment Method ◽  
Enhance Wear Resistance ◽  
Carbide Particles ◽  
Soaking Temperature

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.

scholarly journals Surface roughness characterization of stainless steel after laser assisted machining

Mechanik ◽  
2019 ◽  
Vol 92 (12) ◽  
pp. 827-829 ◽  
Author(s):  
Agata Felusiak ◽  
Martyna Wiciak-Pikuła ◽  
Tadeusz Chwalczuk ◽  
Piotr Kieruj ◽  
Paweł Twardowski
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Cutting Parameters ◽  
Cemented Carbide ◽  
Roughness Parameters ◽  
Laser Assisted Machining ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

The paper presents the analysis of the influence of laser assisted machining (LAM) on various parameters of surface roughness of stainless steel. The tests were carried out for cemented carbide inserts with varying cutting parameters. In most cases, a significant reduction in the roughness parameters was observed using LAM.

CVD of Alternated MCD and NCD Films on Cemented Carbide Inserts

2011 ◽  
pp. 369-382
Author(s):  
Raonei Alves Campos ◽  
Andre Contin ◽  
Vladimir Jesus Trava-Airoldi ◽  
Danilo Maciel Barquete ◽  
Evaldo José Corat
Keyword(s):  
Cemented Carbide ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

CVD of Alternated MCD and NCD Films on Cemented Carbide Inserts

2011 ◽  
pp. 369-382
Author(s):  
Raonei Alves Campos ◽  
Andre Contin ◽  
Vladimir Jesus Trava-Airoldi ◽  
Danilo Maciel Barquete ◽  
Evaldo José Corat
Keyword(s):  
Cemented Carbide ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

Performance of a Matrix Type High Speed Steel after Deep Cryogenic and Low Tempering Temperature

2021 ◽  
Vol 1016 ◽  
pp. 1423-1429
Author(s):  
Kaweewat Worasaen ◽  
Andreas Stark ◽  
Karuna Tuchinda ◽  
Piyada Suwanpinij
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cryogenic Treatment ◽  
High Speed Steel ◽  
High Energy ◽  
Single Step ◽  
Deep Cryogenic Treatment ◽  
Tempering Temperature ◽  
Matrix Type ◽  
Bcc Structure

A matrix type high speed steel YXR3 designed for a combination of wear resistance and toughness is investigated for its mechanical properties after hardening by deep cryogenic treatment follow by tempering. The deep cryogenic quenching carried out at -200 °C for 36 hours and the single step tempering results in an obvious improvement in wear resistance while balancing the toughness, comparing with the conventional quenching followed by a double tempering treatment. The quantitative image analysis reveals little difference in the MC carbide size distribution between tempering at different temperatures. The synchrotron high energy XRD confirms the MC type carbide with some evolution in its orientation together with tempered martensite approaching the BCC structure at higher temperatures. In contrary to the conventional quenching and tempering, the lowest tempering temperature at 200 °C yields a moderate drop in hardness with increase in surface toughness proportionally while exhibiting exceptional wear resistance. Such thermal cycle can be recommended for the industry both for the practicality and improved tool life.

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