A Study of Abrasive Wear on High Speed Steel Surface in Hot Rolling

2016 ◽  
Vol 846 ◽  
pp. 589-594 ◽  
Author(s):  
T. Hoang Phan ◽  
Ahn Kiet Tieu ◽  
Hong Tao Zhu ◽  
Bu Yung Kosasih ◽  
Qiong Wu ◽  
...  
Keyword(s):  
Abrasive Wear ◽  
Hot Rolling ◽  
High Speed ◽  
High Speed Steel ◽  
Work Roll ◽  
Contact Friction ◽  
Strip Surface ◽  
Debris Slide ◽  
Physically Based ◽  
Work Rolls

In hot rolling, the thermal cyclic of work rolls causes a superficial oxide scale, which plays an important role on the contact friction and wear. The asperities of oxidised strip surface and wear debris slide over the High Speed Steel (HSS) work roll surface which comprises of hard carbides within an iron matrix under high pressure and velocity. Abrasive wear occurs and the particles will be removed from HSS surface. The current study introduces the Discrete Element Method (DEM) to investigate this abrasive wear phenomenon. The model successfully provides a physically based abrasive roll wear predication of HSS work roll with the consideration of carbides and oxide layers. It has been found that the carbide shape in the HSS roll affects the wear significantly, which has not been reported by previous numerical simulations and is the main focus of this research.

A study of abrasive wear on high speed steel surface in hot rolling by Discrete Element Method

2017 ◽  
Vol 110 ◽  
pp. 66-76 ◽  
Author(s):  
H.T. Phan ◽  
A.K. Tieu ◽  
H. Zhu ◽  
B. Kosasih ◽  
Q. Zhu ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Abrasive Wear ◽  
Hot Rolling ◽  
High Speed ◽  
Steel Surface ◽  
High Speed Steel ◽  
Discrete Element ◽  
Element Method

High Temperature Oxidation Investigation of Hot Roll Material with High-Speed Steel

2015 ◽  
Vol 1095 ◽  
pp. 130-134 ◽  
Author(s):  
Liang Hao ◽  
Zheng Yi Jiang ◽  
Zhi Xin Chen ◽  
Dong Bin Wei ◽  
Xia Wei Cheng ◽  
...  
Keyword(s):  
High Temperature ◽  
High Speed ◽  
High Temperature Oxidation ◽  
High Speed Steel ◽  
Work Roll ◽  
Oxidation Behaviour ◽  
Rolled Strip ◽  
Temperature Oxidation ◽  
The Matrix ◽  
Work Rolls

High-speed steels are successfully manufactured to make work rolls in hot rolling steel mills. An understanding of their oxidation behaviour is crucial to the degradation of work rolls and the surface quality of rolled strip. In this paper, the high temperature oxidation behaviour of a work roll with high-speed steel material was investigated under isothermal conditions from 550 to 750 °C for 30 min in 20% humid air. The results indicate that molybdenum-rich carbides M2C are oxidised and protrude out of the surface, vanadium-rich carbides MC and iron and chromium-rich carbides are easily identified and less influenced, but the oxides grown on the matrix are relatively even at 550 and 600 °C. However, at higher temperature, MC carbides are severely oxidised and extend to their nearby areas, whereas M7C3zones can still be recognised but with more small particles grown on them.

scholarly journals The Oxidation Behaviors of Indefinite Chill Roll and High Speed Steel Materials

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1095
Author(s):  
Liang Hao ◽  
Tuanjie Li ◽  
Zhongliang Xie ◽  
Qingjuan Duan ◽  
Guoyuan Zhang
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Isothermal Oxidation ◽  
Humid Air ◽  
Rolling Mills ◽  
Dry Air ◽  
Oxide Phases ◽  
Work Rolls ◽  
Oxidation Behaviors

Indefinite chill (IC) roll and high speed steel (HSS) materials have been widely employed to manufacture work rolls as latter and former stands in hot rolling mills. The oxidation of work rolls is of importance for the surface quality of the rolled workpieces. The isothermal oxidation of the IC and HSS materials was conducted at 650 °C and 700 °C in both dry air and humid air. The isothermal oxidation curves indicate that HSS shows faster kinetics than the IC materials in dry air, whereas the opposite occurred in humid air. The oxide scales of the IC materials after the oxidation in both dry air and humid air are made up of two oxide phases. Two oxide phases were found when the HSS oxidized in the dry air and three oxide phases were found when oxidized in the humid air.

Wear-Resistance of Nitrided W-Mo-High Speed Steel in Abrasive Wear Conditions

2013 ◽  
Vol 594-595 ◽  
pp. 1117-1121
Author(s):  
Мazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Merey Rakhadilov
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Abrasive Wear ◽  
High Speed ◽  
Steel Surface ◽  
Plasma Nitriding ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Abrasive Wear Resistance ◽  
R6m5 Steel

In this work the influence of electrolytic-plasma nitriding on the abrasive wear-resistance of R6M5 high-speed steel were under research. We registered that after electrolytic-plasma nitriding on R6M5 steel surface modified layer is formed with 20-40 μm thickness and with increased microhardness of 9000-12200 MPa. Testing mode for the nitrided samples high-speed steel on abrasive wear developed. It is established, that electrolyte-plasma nitriding allows to increase wear-resistance of R6M5 steel surface layer comparing to original. It was determined that abrasive wear-resistance of R6M5 steel surface layer is increased to 25% as a result of electrolytic plasma nitriding. Thus, studies have demonstrated the feasibility and applicability of electrolytic-plasma nitriding in order to improve cutting tools work resource, working under friction and wear conditions.

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