Cemented Carbide Method

Cemented Carbide - scientific.net

Prepared powder mixtures were characterised in terms of particle size, size distribution and shape. In addition, powder mixtures were consolidated via spark plasma sintering to evaluate the effect of the milling method and the duration on the microstructure of final cemented carbide.

US Patent for Method of making a cemented carbide or ...

Oct 17, 2012· The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then …

ASTM B887 - Standard Test Method for Determination of ...

This test method covers the determination of magnetization coercivity (Hcs) of cemented carbide materials and products using coercive force instrumentation. It is patterned after ISO 3326. The values stated in SI units are to be regarded as standard. No other units of …

Control of Carbon Content in Ultrafine Cemented Carbide by ...

In this work, the method of control of carbon content in the ultrafine-grained cemented carbide alloy was proposed. The treating of the WC-8Co-0.4VC-0.4Cr3C2 compacts was made in a CO + CO2 gas ...

Six Polishing Methods for Cemented Tungsten Carbide

Cemented carbide is made of refractory tungsten carbide compound and bonding metal by powder metallurgy process.It has high hardness,wear resistance,good strength and toughness,heat resistance and corrosion resistance.Several methods for tungsten cemented carbide polishing are as follows.

US4820482A - Cemented carbide body with a binder phase ...

The present invention relates to a cemented carbide body, preferably for rock drilling, mineral cutting and wear parts, in which the content of binder phase in the surface is lower and in the center higher than the nominal content. In the center there is a zone having a uniform content of binder phase. The WC grain size is uniform throughout the body.

What are the characteristics when crushing and recycling ...

Apr 29, 2019· The main features of the crushing method are: (1)Cemented carbide has high hardness and is not easily broken. Cemented carbide can maintain high hardness at high temperature, and its hardness exceeds the normal temperature hardness of high speed steel and carbon steel at 600 ° C and 1000 ° C, respectively.

CEMENTED CARBIDE Cemented Carbide - nittan.co.jp

It is the method of making forms by sintering the pressed powder. As tungsten carbide (WC), mainly used in cemented carbides, is very difficult to be melt and formed like iron because of its high melting point (2900 degrees Celsius), cemented carbides are manufactured by this method.

DETERMINATION OF MOISTURE CONTENT IN HYDRATING …

Figure 1 shows the residual moisture content in the hydrating cement paste (w = 0.3, i.e., 23.08 wt.% of water) in dependence on the duration of the original hydration reaction for the first 3 days, determined by the calcium carbide method. The readings of acetylene pressure were always done after 10 minutes. The irregularities on the moisture ...

Tungsten Carbide Patents and Patent Applications (Class ...

Oct 17, 2012· Abstract: The present invention relates to a method of making a cemented carbide comprising mixing in a slurry a first powder fraction and a second powder fraction, subjecting the slurry to milling, drying, pressing and sintering. The first powder fraction is made from cemented carbide scrap recycled using the Zn recovery process, comprising the elements W, C, Co, and at least one or more …

Blasting cleaning process in the processing of cemented ...

Blasting cleaning process in the processing of cemented carbide inserts With the rapid development of the industry, modern high-speed machining and automated machine tools put forward higher requirements for tool performance and stability. Cemented carbide is widely used in the…

Cemented Carbide - scientific.net

Abstract: At present, most of the researches on carbide surface modification are focused on the method of chemical vapor deposition and physical vapor deposition in order to enhance its wear resistance and surface hardness. In this paper, C2H2 and O2 of flame are used to deposit carbon coatings on YG 16 cemented carbide surface.

CUTTING TOOL MADE OF DIAMOND-COATED CEMENTED …

Dec 29, 2016· A cutting tool made of diamond-coated cemented carbide includes: a tool body made of tungsten carbide-based cemented carbide including: 3 to 15 mass % of Co; at least one of TaC and NbC of which a total amount is 0.1 to 3.0 mass %; and a balance including WC; and a diamond film coating the tool body, the tool body has a plurality of protrusions on a surface of the tool body, an …

Cemented carbide - Wikipedia

Cemented carbide is a hard material used extensively as cutting tool material, as well as other industrial applications. It consists of fine particles of carbide cemented into a composite by a binder metal. Cemented carbides commonly use tungsten carbide (WC), titanium carbide (TiC), or tantalum carbide (TaC) as the aggregate. Mentions of ...

Properties and Testing of Cemented Carbides | IntechOpen

Thin films deposited by PVD methods on a cemented carbide surface show high compressive residual stresses ranging from 2000 to 8000 MPa. Stresses this high are beneficial to the films because they close the cracks which form in them during service. At the same …

ASTM B406 - Standard Test Method for Transverse Rupture ...

This test method 2 covers the determination of the transverse rupture strength of cemented carbides. The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are provided for information only. This standard does not purport to address the safety concerns, if any, associated with its use.

Hardness of cemented carbide | ALL ABOUT CEMENTED CARBIDE

Hyperion Materials & Technologies manufactures cemented carbides with a range of hardnesses to solve your needs. The Vickers method is based on indenting a polished carbide surface with a diamond pyramid. The hardness is inversely proportional to the size of impression

Mechanical strength of cemented carbide | ALL ABOUT ...

A suitable method of compressive strength determination is defined by EN 24 506 (ISO 4506). To obtain accurate values with cemented carbide, a modified specimen geometry must be used in order to overcome the edge and contact effects associated with a simple cylindrical test piece.

Development of Technologies for Recycling Cemented …

from cemented carbide scrap generated in Japan and tung-sten-saving tools by forming composite structures. The re-sults of development are reported herein. 2. D C C 2-1 Conventional recycling technique and development goal Methods of recycling tungsten from cemented carbide scrap can be broadly divided into two types: direct methods

CUTTING TOOL MADE OF DIAMOND-COATED CEMENTED CARBIDE …

Dec 29, 2016· A cutting tool made of diamond-coated cemented carbide includes: a tool body made of tungsten carbide-based cemented carbide including: 3 to 15 mass % of Co; at least one of TaC and NbC of which a total amount is 0.1 to 3.0 mass %; and a balance including WC; and a diamond film coating the tool body, the tool body has a plurality of protrusions on a surface of the tool body, an …

EP2355948A1 - Cemented carbide body and method - Google ...

The present invention relates to a method of producing a cemented carbide body comprising providing: (1 ) a grain refiner compound comprising a grain refiner and carbon and/or nitrogen, and, (2) a grain growth promoter, on at least one portion of the surface of a compact of a WC-based starting material comprising one or more hard- phase components and a binder, and then sintering the compact ...

Cemented carbides Mitsubishi - Learnways

Cemented carbide is a tool material that has all properties necessary for cutting tools, including hardness and strength. Cemented carbide is made by powdered tungsten carbide (WC), mixing cobalt (Co) powder in it as a binder, and sintering the mixture.