Study on Friction Properties of Cu-Fe-Based Powder Metallurgy Materials under Dry and Wet Friction Conditions

2010 ◽  
Vol 150-151 ◽  
pp. 1806-1809 ◽  
Author(s):  
Rong Fu ◽  
Fei Gao ◽  
Bao Yun Song
Keyword(s):  
Powder Metallurgy ◽  
Friction Coefficient ◽  
High Speed ◽  
Wear Behavior ◽  
Water Film ◽  
Powder Metallurgy Process ◽  
Wet Friction ◽  
Friction Pressure ◽  
Pressure Changes ◽  
Metallurgy Process

Copper-iron-based friction materials were prepared by powder metallurgy process. The effects of friction velocity and friction pressure on friction and wear behavior of the material under dry and wet friction conditions were investigated with a constant-speed friction machine. The results show that, at low speed friction, the dry friction coefficient is higher than wet friction coefficient and the friction coefficient increases with increasing friction pressure. The reason is that the water film plays an important role in cleaning and lubricating. At high speed friction, there is not much difference between dry and wet friction coefficients and the friction coefficient is not sensitive to friction pressure changes. This is due to the metal matrix high-temperature softening, caused by high speed friction, which controls the friction properties.

Analysis of tribological properties of graphite and aluminum composite materials prepared by powder metallurgy technique

2020 ◽  
Vol 10 (5) ◽  
pp. 663-670
Author(s):  
Zhigang Wang ◽  
Jun Li ◽  
Daquan Li
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Friction Coefficient ◽  
Tribological Properties ◽  
Utilization Rate ◽  
Powder Metallurgy Technique ◽  
Aluminum Composite ◽  
Powder Metallurgy Process ◽  
Metallurgy Process ◽  
Composite Samples

In order to make full use of the wear resistance and antifriction of the mixed reinforced particles, improve the performance and utilization rate of the composite material, and reduce its wear amount, in this study, graphite and aluminum composite materials with different graphite concentration were prepared by powder metallurgy process. On this basis, the influence of different graphite concentration on the friction coefficient and wear amount of composite samples and different load on the wear amount of composite materials were discussed and analyzed. The results show that with the increase of graphite content, the friction coefficient and wear amount of the composite will decrease correspondingly. When the load is less than 30 N, the wear curve of the sample changes steadily. When the load is more than 30 N, the wear will increase sharply. Therefore, the analysis of the tribological properties of the graphite and aluminum composites based on the powder metallurgy process plays an important role in improving the utilization rate of the composite and reducing its wear.

ASP 23

Alloy Digest ◽  
1991 ◽  
Vol 40 (3) ◽  
Keyword(s):  
Powder Metallurgy ◽  
Physical Properties ◽  
Tool Steel ◽  
High Speed ◽  
Heat Treating ◽  
Bend Strength ◽  
Powder Metallurgy Process ◽  
Metallurgy Process

Abstract ASP 23 is a high-speed tool steel manufactured by the ASP powder metallurgy process in which the steel is atomized, compacted, and hot formed to the desired dimensions. This datasheet provides information on composition, physical properties, hardness, elasticity, and bend strength. It also includes information on heat treating, machining, and joining. Filing Code: TS-503. Producer or source: Uddeholm Corporation.

CARPENTER MICRO-MELT T-15 ALLOY

Alloy Digest ◽  
1997 ◽  
Vol 46 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Powder Metallurgy ◽  
Machine Tools ◽  
High Speed ◽  
Heat Treating ◽  
High Carbon ◽  
Powder Metallurgy Process ◽  
Red Hardness ◽  
Metallurgy Process

Abstract Carpenter Micro-Melt T-15 Alloy is a high-speed tool steel made by the powder metallurgy process. The alloy is high carbon with tungsten, cobalt, and vanadium for red hardness and excellent abrasion resistance. Applications include machine tools and cutters. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as forming and heat treating. Filing Code: TS-549. Producer or source: Carpenter.

scholarly journals Comparison of properties of cutting edges made of HSS obtained by conventional methods and in powder metallurgy process

Mechanik ◽  
2017 ◽  
Vol 90 (10) ◽  
pp. 826-828
Author(s):  
Maciej Jan Kupczyk ◽  
Jędrzej Komolka
Keyword(s):  
Powder Metallurgy ◽  
Chemical Composition ◽  
Functional Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Similar Chemical Composition ◽  
Powder Metallurgy Process ◽  
Similar Chemical ◽  
Conventional Methods ◽  
Metallurgy Process

Selected fragments of investigations of technological and functional properties of cutting edges made of conventional and sintered high speed steel with similar chemical composition are presented. Investigations of technological and functional properties have comparative character and concern among other things estimation of chemical composition, hardness, structure and durability during toughening steel machining.

BÖHLER S393 MICROCLEAN

Alloy Digest ◽  
2018 ◽  
Vol 67 (7) ◽  
Keyword(s):  
Powder Metallurgy ◽  
Physical Properties ◽  
High Speed ◽  
High Performance ◽  
High Speed Steel ◽  
Heat Treating ◽  
Powder Metal ◽  
Powder Metallurgy Process ◽  
Red Hardness ◽  
Metallurgy Process

Abstract Böhler (or Boehler) S393 is a high-speed steel made by the powder metallurgy process with excellent toughness and red hardness. This datasheet provides information on composition, physical properties, and hardness. It also includes information on surface qualities as well as forming, heat treating, machining, and powder metal forms. Filing Code: TS-751. Producer or source: Voestalpine High Performance Metals Corporation.

LESCO M-4 PM

Alloy Digest ◽  
1990 ◽  
Vol 39 (5) ◽  
Keyword(s):  
Wear Resistance ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Tool Steel ◽  
High Speed ◽  
Heat Treating ◽  
Vanadium Content ◽  
Steel Company ◽  
Powder Metallurgy Process ◽  
Metallurgy Process

Abstract LESCO M-4 PM high-speed tool steel is a special purpose grade of the molybdenum-tungsten family. Abrasion and wear resistance are enhanced by the increased carbon and vanadium content. It is produced by the powder metallurgy process with resultant better grindability, toughness and improved microstructure as compared with conventional wrought M-4 steel. Sulfide additives enhance machinability. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity. It also includes information on heat treating and machining. Filing Code: TS-500. Producer or source: Latrobe Steel Company.

Development of Powder Metallurgy High Speed Steel

2010 ◽  
Vol 638-642 ◽  
pp. 1854-1859 ◽  
Author(s):  
Hai Lin Zhong ◽  
Y. Fang ◽  
C. Kuang ◽  
X. Kuang ◽  
Q. Hao ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
High Speed ◽  
Nonmetallic Inclusions ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Gas Atomization ◽  
Treatment Processes ◽  
Uniform Microstructure ◽  
Powder Metallurgy Process ◽  
Metallurgy Process

High speed steels (HSS) have been widely used worldwide. This paper introduced some research results of high speed steels via Powder Metallurgy process. High speed steels AHPT15 (W12Cr4V5Co5 ) were investigated via gas atomization, hot isostatic pressing, hot working and heat treatment processes. Microstructure of the steels, precipitation of carbides and the influence of nonmetallic inclusions on mechanical properties of the steels were investigated. PM HSS showed fine and uniform microstructure and exhibited excellent toughness and wear resistance, with bend strength up to 3500 MPa and hardness up to 68.0 HRC.

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