Microstructure and properties of the hot work tool steel gradient surface layer obtained using laser alloying with tungsten carbide ceramic powder

2016 ◽  
Vol 78 (1) ◽  
pp. 37-44 ◽  
Author(s):  
E. Jonda ◽  
K. Labisz ◽  
L.A. Dobrzański
Keyword(s):  
Surface Layer ◽  
Tungsten Carbide ◽  
Tool Steel ◽  
Ceramic Powder ◽  
Laser Alloying ◽  
Microstructure And Properties ◽  
Hot Work Tool Steel ◽  
Gradient Surface

scholarly journals THE INFLUENCE OF THE SOAKING TEMPERATURE OF NITRIDED WCL TOOL STEEL (EN-X37CrMoV5-1) ON THE MICROHARDNESS AND TRIBOLOGICAL WEAR OF THE SURFACE LAYER

Tribologia ◽  
2016 ◽  
Vol 268 (4) ◽  
pp. 69-78
Author(s):  
Michał DWORAK ◽  
Adrian BARYLSKI ◽  
Krzysztof ANIOŁEK ◽  
Elizaveta STEPANOVA
Keyword(s):  
Surface Layer ◽  
High Temperature ◽  
Low Temperature ◽  
Tool Steel ◽  
Nitrided Layer ◽  
Industrial Furnace ◽  
Tribological Tests ◽  
Nitrided Steel ◽  
Hot Work Tool Steel ◽  
Soaking Temperature

The present paper refers to the evaluation of the influence of soaking temperature of nitrided hot work tool steel, X37CrMoV5-1 (WCL), intended for dies for extruding aluminium profiles, on the structure, microhardness, and tribological wear of the nitrided layer. The research involved nitrided steel specimens (X37CrMoV5-1) soaked for 8 hours in an industrial furnace at temperatures of 450°C, 480°C, 520°C, 560°C, and 600°C. For comparison purposes, a REFERENCES material was used, which was not soaked after nitriding. Initially, as the soaking temperature raised, the microhardness of the nitrided layer increased by ca. 10%; however, a further increase in the soaking temperature to more than 450°C caused a decrease in the microhardness of the nitrided layer. The results of tribological tests showed that soaking nitrided steel at a low temperature (450°C) and high temperature (600°C) caused a decrease in tribological wear. Out of the tested materials, the highest microhardness of the upper layer was observed in the samples soaked at 450°C, while the highest resistance to tribological wear was obtained for the samples soaked at 600°C. The conducted tests indicate the possibility of extending the lifetime of dies made from the investigated nitrided steel.

Laser Alloying with WC Ceramic Powder in Hot Work Tool Steel Using a High Power Diode Laser (HPDL)

2006 ◽  
Vol 15-17 ◽  
pp. 193-198 ◽  
Author(s):  
Marek Piec ◽  
Leszek Adam Dobrzański ◽  
Krzysztof Labisz ◽  
Ewa Jonda ◽  
Andrzej Klimpel
Keyword(s):  
Surface Layer ◽  
Tungsten Carbide ◽  
Diode Laser ◽  
Tool Steel ◽  
High Power ◽  
Feed Rate ◽  
Powder Feed Rate ◽  
Powder Feed ◽  
Power Diode ◽  
High Power Diode Laser

Investigations include alloying the X38CrMoV5-3 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 /m were introduced using the rotor conveyer to improve the properties of the surface layer. The powder feed rate was set at the steady level of 8.64g/min. Remelting and alloying were carried out several times in the laser power range of 1.2 – 2.3 kW in the remelting/alloying, alloying/remelting sequences. The structural mechanism was determined of gradient layer development, effect was studied of alloying parameters, gas protection method, and powder feed rate on its mechanical properties, and especially on its hardness, abrasive wear resistance, and roughness. Structure changes were revealed consisting, in particular, in its refining, and also hardness and microhardness changes in comparizon to the nonremelted steel. Examination results obtained with the EDX microanalysis, surface and linear analysis of the chemical composition, as well as the X-ray qualitative phase analysis are presented.

Surface Layer Morphology Due to Laser Alloying Process

2006 ◽  
Vol 220 (3) ◽  
pp. 447-454 ◽  
Author(s):  
J Radziejewska
Keyword(s):  
Surface Layer ◽  
Chemical Composition ◽  
Carbon Steel ◽  
Tungsten Carbide ◽  
Experimental Research ◽  
Interaction Time ◽  
Alloyed Layer ◽  
Laser Alloying ◽  
Motion Process ◽  
Liquid Material

The results of experimental research on the influence of laser alloying parameters on the structure and chemical composition are presented. The alloying process was performed with a continuous CO2 laser, of a 2.5 kW power, at different densities of energy and different interaction times of beam on material. The experiments were done on carbon steel, which was alloyed with powders of tungsten carbide and cobalt stellite. The microstructure, the distribution of alloyed elements, and the microhardness of the surface layer were studied after a laser alloying process. It was shown that alloying layer morphology depends on the laser alloying parameters, especially on interaction time. The research has verified that the motion process of liquid material determines the alloyed layer morphology and indicates a necessity to take into account the convection process.

CANNON-MUSKEGON H19

Alloy Digest ◽  
1972 ◽  
Vol 21 (6) ◽  
Keyword(s):  
Physical Properties ◽  
Tool Steel ◽  
Elevated Temperatures ◽  
Heat Treating ◽  
Hot Work Tool Steel ◽  
Hot Hardness

Abstract CANNON-MUSKEGON H-19 is an air-hardening, tough, hot-work tool steel that has excellent resistance to shock and abrasion at elevated temperatures while maintaining good hot hardness. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on casting, heat treating, machining, and joining. Filing Code: TS-244. Producer or source: Cannon-Muskegon Corporation.

CARPENTER No. 882

Alloy Digest ◽  
1978 ◽  
Vol 27 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Tool Steel ◽  
Cold Work ◽  
Heat Treating ◽  
Temperature Performance ◽  
Hot Work Tool Steel ◽  
Red Hardness

Abstract CARPENTER No. 882 is a 5% chromium hot-work tool steel designed particularly for applications requiring extreme toughness combined with good red hardness. It also has found cold-work applications. It can be used at strength levels in excess of 260,000 psi (18,300 kg/cm2). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-339. Producer or source: Carpenter.

LSS H21

Alloy Digest ◽  
2013 ◽  
Vol 62 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
Steel Company ◽  
Hot Work Tool Steel ◽  
Specialty Steel

Abstract LSS H21 is a hot work tool steel recommended for difficult hot work tooling applications. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: TS-713. Producer or source: Latrobe Specialty Steel Company.

THYROTHERM 2885

Alloy Digest ◽  
2008 ◽  
Vol 57 (3) ◽  
Keyword(s):  
Heavy Metals ◽  
High Temperature ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
Temperature Performance ◽  
Hot Work Tool Steel

Abstract Thyrotherm 2885 is a hot-work tool steel used mainly as extrusion tooling for heavy metals. This datasheet provides information on composition, physical properties, and hardness as well as creep. It also includes information on high temperature performance as well as forming and heat treating. Filing Code: TS-662. Producer or source: Schmolz + Bickenbach USA Inc.

LSS H10

Alloy Digest ◽  
2008 ◽  
Vol 57 (9) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Thermal Fatigue ◽  
Heat Treating ◽  
Steel Company ◽  
Hot Work Tool Steel ◽  
Specialty Steel

Abstract LSS H10 is a hot-work tool steel with resistance to temperature softening and thermal fatigue. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-672. Producer or source: Latrobe Specialty Steel Company.

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