Magnetometric investigation of the decomposition of residual austenite in ROMlOF3 and R2M1OF3K8 High-speed steel powders

1984 ◽  
Vol 23 (5) ◽  
pp. 373-376
Author(s):  
B. A. Apaev ◽  
B. F. Galkin ◽  
G. �. Titenskaya
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Residual Austenite

scholarly journals The Heat Treatment Influence of 1.3343 High Speed Steel on Content of Residual Austenite

2016 ◽  
Vol 22 ◽  
pp. 161-166
Author(s):  
Maria Stoicanescu ◽  
Emilian Ene ◽  
Adriana Zara ◽  
Ioan Giacomelli ◽  
Aurel Crisan
Keyword(s):  
Heat Treatment ◽  
High Speed ◽  
High Speed Steel ◽  
Residual Austenite

Formation of Build Up Layers Microstructure by Arc Automatic Overlay Welding Using Secondary Raw Material Powders

2013 ◽  
Vol 58 (2) ◽  
pp. 549-553 ◽  
Author(s):  
P. Ambroza ◽  
S. Bockus ◽  
L. Kavaliauskiene
Keyword(s):  
Tool Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Residual Austenite ◽  
Raw Material ◽  
Low Carbon ◽  
The Matrix ◽  
Hardened Tool Steel ◽  
Overlay Welding ◽  
Materials Used

Microstructure and properties of structural steel subjected to overlay welding with secondary materials powder is investigated. Crushed glass, grinding wheels (SiC), hard metals plates, high speed steel and cast iron chips as well as marble powders were used in automatic overlay welding of steel by low carbon wire. Powder spread over the steel surface and melted by continuously supplied wire arc enabled to obtain layers with graphite and carbides inclusions in the matrix; hardness of the matrix depends on the phases contained in it: martensite, troostite and residual austenite as well as secondary carbides. Depending on materials used for overlay welding the layers were obtained which abrasive wear resistance became equal to that of high alloyed hardened tool steel. Wear of these layers is much more less in comparison with low alloyed hardened tool steel.

Heat Treatments of W6Mo5Cr4V2Si High Speed Steel

2013 ◽  
Vol 712-715 ◽  
pp. 17-21
Author(s):  
Yong Li ◽  
Li Yuan Niu ◽  
Ji Xing Lin ◽  
Zi Mu Shi ◽  
Guang Liang Gao ◽  
...  
Keyword(s):  
High Speed ◽  
Annealing Temperature ◽  
High Speed Steel ◽  
Residual Austenite ◽  
Heat Treatments ◽  
Annealing Effect ◽  
Tempering Temperature ◽  
Temperature Range ◽  
Carbide Particles ◽  
Quenching And Tempering

In this study, we conducted heat treatments on W6Mo5Cr4V2Si steel using different annealing, quenching, and tempering processes. Meanwhile, the microstructure and hardness performance of this steel are analyzed. The results showed that, in the annealing temperature range of 790°C-870°C, the higher the annealing temperature was, the better the annealing effect that W6Mo5Cr4V2Si steel presented; W6Mo5Cr4V2Si steel exhibited the lowest annealing hardness of 22.6 HRC after annealing at 870°Cfor 2 h; In the condition of annealing at 830°C for 3 h, quenching at 1200 °C around, and tempering temperature range of 400 °C-700 °C, W6Mo5Cr4V2Si steel showed the highest hardness at tempering of 560 °C around, which is about 66.7 HRC. The tempering structure of this steel was mainly composed by needle or strip-typed martensite, a small amount of residual austenite, and carbide particles.

Effect of Powder-Mixed Dielectric on EDM Process Performance

2020 ◽  
Vol 38 (8A) ◽  
pp. 1226-1235
Author(s):  
Safa R. Fadhil ◽  
Shukry. H. Aghdeab
Keyword(s):  
Silicon Carbide ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
High Speed Steel ◽  
Transformer Oil ◽  
Dielectric Fluid ◽  
Peak Current ◽  
Powder Concentration ◽  
Pulse On Time

Electrical Discharge Machining (EDM) is extensively used to manufacture different conductive materials, including difficult to machine materials with intricate profiles. Powder Mixed Electro-Discharge Machining (PMEDM) is a modern innovation in promoting the capabilities of conventional EDM. In this process, suitable materials in fine powder form are mixed in the dielectric fluid. An equal percentage of graphite and silicon carbide powders have been mixed together with the transformer oil and used as the dielectric media in this work. The aim of this study is to investigate the effect of some process parameters such as peak current, pulse-on time, and powder concentration of machining High-speed steel (HSS)/(M2) on the material removal rate (MRR), tool wear rate (TWR) and the surface roughness (Ra). Experiments have been designed and analyzed using Response Surface Methodology (RSM) approach by adopting a face-centered central composite design (FCCD). It is found that added graphite-silicon carbide mixing powder to the dielectric fluid enhanced the MRR and Ra as well as reduced the TWR at various conditions. Maximum MRR was (0.492 g/min) obtained at a peak current of (24 A), pulse on (100 µs), and powder concentration (10 g/l), minimum TWR was (0.00126 g/min) at (10 A, 100 µs, and 10 g/l), and better Ra was (3.51 µm) at (10 A, 50 µs, and 10 g/l).

Enhancement of EDM Performance by Using Copper-Silver Composite Electrode

2020 ◽  
Vol 38 (9A) ◽  
pp. 1352-1358
Author(s):  
Saad K. Shather ◽  
Abbas A. Ibrahim ◽  
Zainab H. Mohsein ◽  
Omar H. Hassoon
Keyword(s):  
Surface Roughness ◽  
Material Removal Rate ◽  
Material Removal ◽  
High Speed ◽  
Composite Electrode ◽  
Removal Rate ◽  
Pure Copper ◽  
High Speed Steel ◽  
Pulse On Time ◽  
Pulse Off Time

Discharge Machining is a non-traditional machining technique and usually applied for hard metals and complex shapes that difficult to machining in the traditional cutting process. This process depends on different parameters that can affect the material removal rate and surface roughness. The electrode material is one of the important parameters in Electro –Discharge Machining (EDM). In this paper, the experimental work carried out by using a composite material electrode and the workpiece material from a high-speed steel plate. The cutting conditions: current (10 Amps, 12 Amps, 14 Amps), pulse on time (100 µs, 150 µs, 200 µs), pulse off time 25 µs, casting technique has been carried out to prepare the composite electrodes copper-sliver. The experimental results showed that Copper-Sliver (weight ratio70:30) gives better results than commonly electrode copper, Material Removal Rate (MRR) Copper-Sliver composite electrode reach to 0.225 gm/min higher than the pure Copper electrode. The lower value of the tool wear rate achieved with the composite electrode is 0.0001 gm/min. The surface roughness of the workpiece improved with a composite electrode compared with the pure electrode.

MUSTANG-LC

Alloy Digest ◽  
1967 ◽  
Vol 16 (4) ◽  
Keyword(s):  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Hot Extrusion ◽  
Heat Treating ◽  
Hot Forming ◽  
Steel Company ◽  
Extrusion Dies ◽  
Die Life

Abstract Mustang-LC is a tungsten-molybdenum high-speed steel specially developed for hot work applications requiring long die life. It is recommended for hot forming and swaging dies, hot extrusion dies, hot punches, etc. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-192. Producer or source: Jessop Steel Company.

UNS T12001

Alloy Digest ◽  
1989 ◽  
Vol 38 (1) ◽  
Keyword(s):  
Heat Treatment ◽  
Physical Properties ◽  
Tool Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Steel Mills

Abstract UNS T12001 is a general-purpose, tungsten, high-speed steel containing nominally 18% tungsten, 4% chromium and 1% vanadium. It is suitable for practically all high-speed applications. This steel has been the standard of the industry for many years because of its cutting ability, ease of heat treatment and minimum tendency to decarburize. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-495. Producer or source: Tool steel mills.

UNS T11310

Alloy Digest ◽  
1988 ◽  
Vol 37 (5) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Tool Steel ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Steel Mills

Abstract UNS No. T11310 is the high vanadium type of molybdenum high-speed steel. It is a deep-hardening steel and offers high cutting ability and excellent finishing properties. It is a general-purpose steel for cutting tools and is used in such applications as taps, lathe tools and reamers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating and machining. Filing Code: TS-490. Producer or source: Tool steel mills.

Sign in / Sign up

Export Citation Format

Share Document