Cemented Carbide Method
- صفحه اصلی
- Cemented Carbide Method
This paper presents a method based on finite element method (FEM) for studying the hardness of carbide tools. The microstructure of the carbide tool is obtained by scanning electron microscope(SEM). ... The hardness values of cemented carbide tools are then calculated by the traditional method, Oliver-Pharr (OP) method and …
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DOI: 10.1016/J.APSUSC.2017.07.160 Corpus ID: 136387289; Smooth polishing of femtosecond laser induced craters on cemented carbide by ultrasonic vibration method @article{Wang2017SmoothPO, title={Smooth polishing of femtosecond laser induced craters on cemented carbide by ultrasonic vibration method}, author={Hua …
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This article describes the microstructure, physical, and mechanical properties of cemented carbides. The properties discussed include thermal conductivity, magnetic properties, …
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In order to study the effect of pulse current treatment on the mechanical properties, microstructure and cutting performance of YG8 cemented carbide, experiments were carried out by using self-made pulse current treatment device to treat cemented carbide samples with different current densities (J = 5, 10 and 15 A·mm−2). After the …
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Shear thickening polishing (STP), an emerging polishing method, is used to polish the cemented carbide insert with complex shape in this study. The principle and performance of STP were introduced. Four parameters having significant influence on the STP process, including polishing speed, abrasive concentration, abrasive size, and …
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In this context, we review current research on the preparation of ultrafine/nano WC–Co composite powder and sintering methods of ultrafine/nano …
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Methods of modeling mechanical properties of and degradation processes in cemented carbides are described. Methods and results of modeling of the stress distribution in cemented carbide articles based on the Finite Element Analysis or Finite Element Method are reported with respect to different applications of carbide articles and tools.
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The paper aims at categorising cemented carbides in a structured way and to serve as an introduction to cemented carbide microstructures for engineers, researchers and scientists.
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Titanium carbide (TiC) steel-bonded cemented carbide was prepared by powder metallurgy using hydroxyl iron powder, TiC powder, and carbon powder as raw materials. The effect of TiC content on the structure and properties of cemented carbide was studied, and the cemented carbide with the best comprehensive mechanical …
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Cemented carbide is a kind of composite material made of refractory metal carbide with high hardness and metal binder with good toughness by powder metallurgy. 1 Compared with ordinary cemented …
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Consequently, traditional cutting methods for cemented carbide often encounter issues such as high cutting force, elevated cutting temperatures, severe tool wear, and poor surface quality [3]. These limitations hinder the achievement of ultra-precision machining requirements for cemented carbide workpieces. Therefore, the …
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A coated cemented carbide cutting tool and a method of making the same is provided. The cutting tool is comprised of a WC−Co based cemented carbide body and a hard and wear resistant coating. The cemented carbide body is comprised of a composition of 9-12 wt % Co, 0.2-2.0 wt % cubic carbides from elements from group …
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The employed cemented carbide used in this research is a commercially ready-to-press spray-dried spherical particles WC-12Co powder (GTP, Towanda, PA, USA) with 34 µm median size, used as received. ... the potential to develop the method for producing certain cemented carbide parts, with complex shapes, in small production …
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In this regard, Chevron-notched three-point bending test yields suitable fracture toughness values for a wide range of cemented carbide grades with varying hardness. Concerning indentation methods, the Hertzian one may be particularly recommended, as compared to Palmqvist method, as far as hardness (HV30) drops …
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The cemented carbides are a range of powder-metallurgical composite materials, which consist of hard carbide particles bonded together by a metallic binder ( Hard Materials 2012).The proportion of carbide phase is generally between 70 % and 97 % of the total weight of the composite and its grain size averages between 0.4 …
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Reasonable cutting edge preparation can eliminate microscopic defects and improve the performance of a cutting tool. The flexible fiber-assisted shear thickening polishing method was used for the preparation of cemented carbide insert cutting edge. The influences of the polishing angle and polishing speed on the cutting edge …
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Cemented carbide is a composite material prepared by powder metallurgical methods. It has the advantages of high hardness, good toughness, and wear and corrosion …
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Cemented carbide 91 wt% WC–3 wt% TiC–6 wt% Co was sintered by spark plasma sintering at different temperatures of 1200 °C, 1300 °C, and 1400 °C and the effect of sintering temperature on the microstructure and properties of this type of composites, such as total density, apparent density, hardness, and fracture surface were measured …
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Cemented carbide recycling methods are classified into three categories: (1) direct, (2) indirect and (3) semi-direct. The direct methods have advantages of high recoveries, good quality powders' production and good grain size control. These methods, however, suffer from incomplete separation of metal carbides from the binding material ...
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Thus, the presented work focused on the development of cemented carbide (WC-10 wt% Co) with symmetric composition gradient by SPS method and characterization of density by Archimedes method, microstructure by scanning electron microscope (SEM), hardness by Vickers hardness test.
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Cemented carbide has high hardness, high abrasive resistance, high elasticity modulus, low coefficient of thermal expansion, and stable chemical properties. …
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The massive accumulation of spent cemented carbide not only produces environmental pollution but also wastes resources such as tungsten and cobalt. To solve the problem, a low-temperature acid aqueous electrochemical method was used; cobalt was recycled on a stainless steel cathode, and at the same time, tungstic a
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Microstructure of the cemented carbide: TiC grains (dark) are embedded in a CoCrFeNiMn matrix (grey). Full size image Therefore, our results demonstrate the feasibility of preparing TiC-based cermets embedded in a matrix of high-entropy alloy trough a one-step SHS process.
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Cemented carbide has been widely applied in the manufacturing industry due to the excellent wear resistance and corrosion resistance. As a typical difficult-to-machine material, it faces many challenges such as surface damage and tool wear in traditional machining. Therefore, many non-traditional machining methods based on …
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@article{Katiyar2020ACR, title={A comprehensive review on recycling methods for cemented tungsten carbide scraps highlighting the electrochemical techniques}, author={Prvan Kumar Katiyar and Navneet Singh Randhawa}, journal={International Journal of Refractory Metals & Hard Materials}, year={2020}, …
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The WC-Co cemented carbide prepared using the method described in this paper was optimized on the basis of the selected materials by adjusting the process parameters and cerium addition. Compared with the nanostructured cemented carbide, a small portion of the hardness and flexural strength are saced to obtain higher impact …
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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 …
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Tool was replaced by a cemented carbide disk, and workpiece was replaced by a titanium alloy ball. The model of ball-on-disk test was established and the finite element analysis of ball-on-disk test was carried out to obtain the optimal geometric characteristic of …
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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.
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The results show that adding fine WC powder is an effective method to improve the wear resistance of coarse-grained WC–Co cemented carbides. ... The total test time of each sample was 3 h. The wear volume of cemented carbide sample was calculated by the lost weight and density of the alloys, respectively. The morphologies of impact-worn ...
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Cemented carbide is a multi-phase composite material with excellent mechanical characteristics such as high ... The surface of the carbide insert after STP method polishing is shown in Fig. 14 c, the surface pits and tool marks are obviously reduced, but there are still a few surface defects. Fig. 14 d shows the image after the …
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In this paper, a novel finite element method for the wear analysis of cemented carbide tool during high-speed cutting Ti6Al4V alloy was proposed. The high-speed cutting tests were carried out on Ti6Al4V to verify the tool wear prediction FEM model. The main conclusions are as follows: (1)
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The flexural strength was measured by three-point bending method, and the fracture toughness was measured by three-point bending sample test method. In addition, the iMicro model nano indentation instrument from KLA-Tencor Co., Ltd. is used to test the nano hardness and elastic modulus of cemented carbide. ... The regions in cemented …
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