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Carbide material for cutting devices and associated method of manufacture

A manufacturing method and carbide technology, applied in welding/cutting media/materials, manufacturing tools, additive manufacturing, etc., can solve the problem of limited hardness of tungsten carbide materials

Pending Publication Date: 2020-12-15
C4有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, to date, the hardness achievable with tungsten carbide materials has been limited while still providing a material suitable for cutting

Method used

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  • Carbide material for cutting devices and associated method of manufacture
  • Carbide material for cutting devices and associated method of manufacture
  • Carbide material for cutting devices and associated method of manufacture

Examples

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Embodiment Construction

[0028] figure 1 Illustrated is a method of forming carbide material on a device such as a steel strip 10 that can be used as a blade in a tool such as a band saw, hack saw, jig saw, hole saw. The strip 10 may be formed with teeth if desired.

[0029] The strip 10 is moved relative to the station 12 to allow carbide material to form along the upper edge 14 of the strip 10 . Workstation 12 includes hoppers 20, 20' for supplying material in powder form and a high power energy source 22, typically a continuous wave fiber laser with a maximum power of 1 kW operating at 800 W, although the high power energy source 22 can apply a power range from 300W to 2kW. One or more computing devices 24 control the movement of the strip 10 relative to the workstation 12 and hoppers 20 , 20 ′, the supply of material from the hoppers 20 , 20 ′ and the output of the energy source 22 . Typically, the web 10 moves at a substrate traverse speed of 2 m / min, although the traverse speed may vary betwe...

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Abstract

The invention provides a carbide material for cutting devices and an associated method of manufacture. There is provided a carbide material (34) comprising Tungsten Carbide of 60 to 85 weight%, Titanium Carbides of 10 to 25 weight% and preferably a metal matrix of 0.5 to 20 weight% comprising Fe and optionally at least one or both of the metals Co or Ni. There is also provided a device comprisinga ferrous substrate and such a carbide material and a method of manufacturing a device, the method comprising mixing powders comprising Carbon, Tungsten and a scavenger material such as Titanium, placing the mixed powders proximal a ferrous substrate (10), impinging an energy source (31) onto the powdered materials to create a melt pool (32) formed of the powders and the material of the substrate,and allowing the melt pool to solidify to form a carbide material (34) substantially free from Iron Tungsten carbides of (W, Fe)6 C and (W, Fe)12 C type.

Description

technical field [0001] The present invention relates to a carbide material for deposition on an iron-containing base and to a method of manufacturing such a carbide material. Background technique [0002] For carbide materials used as coatings, high hardness values ​​are generally desired, and a common material is tungsten carbide in a metal matrix of cobalt or nickel because it provides Optimum hardness and toughness. [0003] Carbide materials can be deposited using an additive manufacturing process in which powder or wire material is melted or sintered by a high-energy, concentrated heat source such as a laser or electron beam. [0004] A known problem with the deposition of tungsten carbide onto ferrous substrates using additive manufacturing techniques is the formation of highly brittle iron-tungsten carbides (W, Fe) 6 C and (W, Fe) 12 C, it increases the brittleness of the material. Thus, until now, the material toughness achievable by depositing tungsten carbide o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08B22F7/08B22F3/105B22F5/00B33Y80/00B33Y10/00C04B35/56
CPCC22C29/08B22F7/08B22F5/00B33Y80/00B33Y10/00C04B35/5626B22F2005/001C04B2235/3843C04B2235/3847C04B2235/405C04B2235/3817B22F10/36B22F12/55B22F12/13B22F10/34B22F10/25B22F12/41B22F12/52B22F10/368C23C24/103C22C1/051C22C29/005Y02P10/25B23K26/342B23K35/32B33Y70/10C23C24/10B23B27/14C22C1/02
Inventor 龚俊彦A·克里斯安瑟尤P·塞维森科
Owner C4有限公司
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