Process Optimization and Properties of Laser Cladding High Speed Steel Coatings on Nodular Cast Iron

2011 ◽  
Vol 418-420 ◽  
pp. 1527-1530
Author(s):  
Jian Bin Lv ◽  
Zheng Yi Wang ◽  
Xue Wei Wang ◽  
Chang Sheng Liu
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Laser Cladding ◽  
High Speed ◽  
Continuous Wave ◽  
High Speed Steel ◽  
Nodular Cast Iron ◽  
Wear Property ◽  
Treatment Technology ◽  
Red Hardness

Rolls in the steel industry withstand very high loads, thermal cycling leading to thermal fatigue, and severe environmental. How to improve the wear resistance and elongate the service life of rolls matters a lot in reducing the consumption of rolls. In recent years, because of its better red-hardness and wear property, high speed steel (HSS) was used to manufacture the new type composite rolls. As a surface treatment technology, laser cladding can fabricate coating to improve the wear resistance of substrate. In this paper, the substrates for laser cladding were nodular cast iron rolls, Nd:YAG solid pulsed laser and continuous wave CO2laser were both used to explore the feasibility of preparation HSS coatings. The Nd:YAG laser cladding results that the coated layers combined metallurgically with the substrate with a lot of microcracks. The average microhardness up to 600 HV is about 2 times as high as that of the substrate. The CO2laser cladding results that: fully dense and crack free clad surfaces of high speed steel with an excellent metallurgical bonding were deposited. The average microhardness up to 900 HV is about 3 times as high as that of the substrate. The high-temperature (500 °C) wear rate is 40% of nodular cast iron’s in 30 min.

Process Optimization and Properties of Laser Cladding High Vanadium High Speed Steel Coatings on Nodular Cast Iron

2013 ◽  
Vol 712-715 ◽  
pp. 611-614 ◽  
Author(s):  
Ni Jun Xu ◽  
Jian Bin Lv ◽  
Ting Sun ◽  
Chang Sheng Liu
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Laser Cladding ◽  
High Speed ◽  
High Speed Steel ◽  
Nodular Cast Iron ◽  
Vanadium Content ◽  
Treatment Technology ◽  
Metallurgical Bonding ◽  
Steel Rolls

As withstanding very high loads, thermal cycling leading to thermal fatigue, and severe environmental in the steel industry, rolls with long service life are specially required. High speed steel with high vanadium content is a newly-developed wear-resistance material that has been studied and used in some countries for making steel rolls. As a surface treatment technology, laser cladding can fabricate coating to improve the wear resistance of substrate. In this paper, the substrates for laser cladding were nodular cast iron rolls, Nd: YAG solid pulsed laser was used to explore the feasibility of preparation high vanadium high speed steel (HVHSS) coatings. The Nd: YAG laser cladding results that the coated layers combined metallurgically with the substrate with a lot of microcracks. The average microhardness up to 650 HV is more than 2 times as high as that of the substrate. After laser remelting, a fully dense and crack free HVHHS coating with an excellent metallurgical bonding was deposited. The presence of VC in the coating mainly improves the microhardness of coating up to about 650 HV.

CIRCLE M

Alloy Digest ◽  
1953 ◽  
Vol 2 (9) ◽  
Keyword(s):  
Wear Resistance ◽  
Compressive Strength ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
High Production ◽  
Red Hardness

Abstract CIRCLE M is a molybdenum-tungsten high-speed steel containing 9.0% cobalt. It is adapted to high production applications where increased speeds and heavy cuts necessitate unusual red-hardness and wear resistance. This datasheet provides information on composition, physical properties, elasticity, and compressive strength. It also includes information on forming, heat treating, and machining. Filing Code: TS-10. Producer or source: Firth Sterling Corporation.

RED CUT COBALT

Alloy Digest ◽  
1980 ◽  
Vol 29 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
High Speed ◽  
Elevated Temperatures ◽  
High Speed Steel ◽  
Heat Treating ◽  
High Speeds ◽  
Red Hardness ◽  
Nonferrous Alloys ◽  
Cutting Point

Abstract RED CUT COBALT steel is made by adding 5% cobalt to the conventional 18% tungsten -4% chromium-1% vanadium high-speed steel. Cobalt increases hot or red hardness and thus enables the tool to maintain a higher hardness at elevated temperatures. This steel is best adapted for hogging cuts or where the temperature of the cutting point of the tool in increased greatly. It is well adapted for tools to be used for reaming cast-iron engine cylinders, turning alloy steel or cast iron and cutting nonferrous alloys at high speeds. This datasheet provides information on composition, physical properties, and hardness as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-367. Producer or source: Teledyne Vasco.

FAGERSTA WKE-45

Alloy Digest ◽  
1977 ◽  
Vol 26 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Stainless Steels ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Red Hardness

Abstract FAGERSTA WKE-45 is a tungsten-molybdenum high-speed steel containing 11% cobalt. It has greater red hardness and more wear resistance than almost any other high-speed steel and has adequate (medium) toughness. It is used mainly for lathe tools (for example, tool bits) where maximum wear resistance and red hardness are required. It is particularly suitable for working very hard and wear-inducing materials, including stainless steels. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, and machining. Filing Code: TS-317. Producer or source: Fagersta Steels Inc..

CRUCIBLE CPM REX 121

Alloy Digest ◽  
2001 ◽  
Vol 50 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
High Temperature ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Maximum Hardness ◽  
Temperature Performance ◽  
Red Hardness ◽  
Cutting Speeds

Abstract CPM Rex 121 is a super high-speed steel with significantly higher wear resistance and red hardness than other high-speed steels. It is best suited for applications requiring high cutting speeds. It may provide an alternative to carbide where carbide cutting edges are too fragile. The annealed hardness is approximately 350-400 HB, and maximum hardness is approximately 72 HRC. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity as well as fracture toughness. It also includes information on high temperature performance and wear resistance as well as heat treating and surface treatment. Filing Code: TS-591. Producer or source: Crucible.

HS-105

Alloy Digest ◽  
2006 ◽  
Vol 55 (11) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Red Hardness

Abstract HS-105 is often called 5% Co HSS (high-speed steel). It has some of the increased red-hardness properties of M42 and is not quite as susceptible to shock. It is often used for making tool bits. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on wear resistance as well as forming, heat treating, and machining. Filing Code: TS-636. Producer or source: Timken Latrobe Steel.

scholarly journals Morphology, Hardness and Wear Properties of Plasma Cladding NiCrCu Coating on M2 High-Speed Steel

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 641 ◽  
Author(s):  
Shengwei Zhang ◽  
Min Lei ◽  
Mingpan Wan ◽  
Chaowen Huang
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
High Speed Steel ◽  
Longitudinal Direction ◽  
Wear Properties ◽  
Cladding Layer ◽  
Plasma Cladding ◽  
M2 High Speed Steel ◽  
Red Hardness ◽  
Composition Fluctuations

To improve the cutting performance, the red hardness and wear resistance of M2 high-speed steel, as well as expand the application field, in this work, a coating was fabricated via plasma cladding on M2 high-speed steel using Ni, Cr and Cu alloy elements as precursor materials. The distribution and composition of alloying elements, microhardness and wear resistance of the coating were studied. The results show that the NiCrCu cladding layer contains many types of carbides. The secondary hardening caused by the dispersion of carbides can significantly improve the hardness, red hardness and wear resistance of material. The hardness of cladding layer is above 950 HV, after holding at 600 °C for 4 h, the hardness is above 932 HV. The alloy elements are evenly distributed, but, due to the rapid solidification after the cladding, there are composition fluctuations in the longitudinal direction. The wear resistance of the cladding layer is excellent; the wear rate is reduced from 1.75 to 1.44 × 10−6 mm3 N−1 m−1 or less; and the wear mechanism is a combination of abrasive wear and adhesive wear.

MOLITE 4

Alloy Digest ◽  
1985 ◽  
Vol 34 (9) ◽  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Thin Sheet ◽  
High Speed Steel ◽  
Heat Treating ◽  
Cold Extrusion ◽  
High Wear Resistance ◽  
Red Hardness ◽  
Twist Drills ◽  
Very High

Abstract MOLITE 4 is a high-carbon, high-vanadium, tungsten-molybdenum high-speed steel that approaches the ultimate in wear resistance for high-speed steels in this group. The advantages in using this steel comprise (1) Very high wear resistance, (2) High red hardness, (3) Good toughnes and (4) Moderate grindability. Among its many uses are punches and dies for blanking and forming thin sheet, milling cutters, twist drills, reamers, forming rolls, cold-extrusion punches and draw dies. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-447. Producer or source: Columbia Tool Steel Company.

The Study on Abrasive Wear of Carbon of High Vanadium High Speed Steel Compared With That of High Chromium Cast Iron

2005 ◽  
Author(s):  
Shizhong Wei ◽  
Jinhua Zhu ◽  
Liujie Xu ◽  
Rui Long
Keyword(s):  
Cast Iron ◽  
Abrasive Wear ◽  
High Speed ◽  
Testing Machine ◽  
High Speed Steel ◽  
Wear Testing ◽  
Wear Property ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

It is studied the carbons abrasive wear property of high vanadium high speed steel compared with that of general high chromium cast iron (Cr20) in this paper. The vanadium content is 10% in the high vanadium high speed steel, and it is a kind of new wear material that has been studied in the past ten years. In the experiment the three materials were used to resist the abrasive wear of Al2O3, the wear test was conducted on a ML-10 abrasive wear-testing machine. The abrasive surfaces, cross-section and sloping -section surfaces were scanned by means of a SEM (JSM-5160LV) device. The typical morphology photos of VC and Cr7C3 were taken in course of abrasive wear, which not only describe the different abrasive wear property of the carbons in the two materials, but also make the cause of the excellent wear property of this HSS clear. The research results have showed that the service lives (V10) are three times longer than that of high chromium cast iron (Cr20). The excellent wear resistance of high vanadium high-speed steel depends on the characters of high hardness, lumpy morphology of VC which are scattered in hard matrix of HSS.

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