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Explosion cladding process of steel bond hard alloy and carbon steel

A technology of steel-bonded cemented carbide and composite technology, applied in metal material coating technology, coating and other directions, can solve the problems of difficult composite of small workpieces, complicated process, high brittleness of tool steel, etc. Grinding, good toughness effect

Inactive Publication Date: 2006-06-21
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] As far as explosive composite materials are concerned, at present most of them are composites of stainless steel, copper, aluminum, etc. In 1994, it was reported that the explosive welding of rails was successful. It can only be compounded for workpieces with simple shapes and large volumes, and it is difficult to compound small workpieces with complex shapes. High brittleness, easy to cause fracture, warping and other problems during explosive compounding, and the compounding rate is not high. In order to improve the compounding rate, preheating above 200°C is used before assembly and explosive compounding, which is difficult to apply due to limited conditions It is suitable for production; there are also tool steels that are grooved to increase their composite rate, the process is complicated, and it is not widely used in production

Method used

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  • Explosion cladding process of steel bond hard alloy and carbon steel

Examples

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Effect test

Embodiment 1

[0014] Take the production of refractory brick molds as an example. Mill a groove of about 280×160×5mm on the surface of a piece of 45 steel; put the prepared cemented carbide powder (Wc: 50%, C: 1.0%, Mo: 1.5%, Cr: 3.0%, and the balance is iron ) Add 1.0% of the weight of the alloy powder into the cemented carbide binder ball mill and stir evenly, and fill it into the carbon steel milled groove for compaction. After the binder is dry, place it on the flat land or sand as a whole On the ground, a carbon steel plate with a thickness of 3mm and an area slightly larger than the groove is supported on the carbon steel substrate by four thin metal sheets as a doubler plate, which is 8cm away from the base plate. Explosives are placed on the doubler plate and detonated by an 8# detonator; Carbon steel plate on the surface, liquid phase sintering process (temperature 600°C, heat preservation for 2 hours, heat preservation at 1250°C for 2 hours and cooling with the furnace), heat trea...

Embodiment 2

[0016] Take the production of refractory brick molds as an example. Mill a groove of about 280×180×6mm on the surface of a piece of 45 steel; put the prepared cemented carbide powder (Wc: 30%, C: 0.3%, Mo: 0.5%, Cr: 0.5%, and the balance is iron ) Add 1.5% of the alloy powder’s weight of paraffin as a binder, ball mill and mix evenly, and fill it into the carbon steel milled groove for compaction. After the binder is dry, place it flat on the flat land or sand as a whole A carbon steel plate with a thickness of 4mm and an area slightly larger than the groove is supported by four thin metal sheets on the carbon steel substrate as a doubler plate, 12cm away from the base plate, explosives are placed on the doubler plate and detonated by an 8# detonator; the surface is milled off Carbon steel plate, liquid phase sintering process (temperature 600°C, heat preservation for 2 hours, heat preservation at 1300°C for 2 hours and cooling with the furnace), heat treatment at 820°C for 3 ...

Embodiment 3

[0018] Take the production of refractory brick molds as an example. Mill a groove of about 280×210×8mm on the surface of a piece of 45 steel; put the prepared cemented carbide powder (Wc: 40%, C: 0.6%, Mo: 0.6%, Cr: 0.6%, and the balance is iron ) Add 2.0% resin of the weight of the alloy powder as a binder, ball mill and mix evenly, and fill it into the carbon steel milled groove for compaction. After the binder is dry, place it flat on the flat land or sand as a whole A carbon steel plate with a thickness of 4mm and an area slightly larger than the groove is supported by four thin metal sheets on the carbon steel substrate as a doubler plate, 16cm away from the base plate, explosives are placed on the doubler plate and detonated by a detonator; the steel plate on the surface is milled off , liquid phase sintering process (temperature 500 ° C for 2 hours, 1400 ° C for 1 hour with furnace cooling), heat treatment at 840 ° C for 3 hours and air cooling to obtain a highly wear-r...

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Abstract

The invention relates material composite technology. The explosion cladding technology of steel bonded alloy and carbon steel is synthesized by steel bonded alloy powder and carbon steel base body, comprising the following steps: using the shock wave caused by explosion to form the alloy powder, then using the liquid phase sintering to make the powder and carbon steel compound, finally carrying out heat treatment to get the complex of steel bonded alloy and carbon steel. The explosion cladding technology makes the steel bonded alloy and carbon steel well combine. So the complex possesses the high intensity, abrasive resistance and tenacity, overcomes the problem that it is difficult to synthesize compound the steel bonded alloy and carbon steel, and can take place the complex of tool steel and carbon steel.

Description

technical field [0001] The invention relates to material compounding technology, and mainly proposes an explosive compounding process of steel-bonded hard alloy and carbon steel. Background technique [0002] As far as explosive composite materials are concerned, at present most of them are composites of stainless steel, copper, aluminum, etc. In 1994, it was reported that the explosive welding of rails was successful. It can only be compounded for workpieces with simple shapes and large volumes, and it is difficult to compound small workpieces with complex shapes. High brittleness, easy to cause fracture, warping and other problems during explosive compounding, and the compounding rate is not high. In order to improve the compounding rate, preheating above 200°C is used before assembly and explosive compounding, which is difficult to apply due to limited conditions It is also used in production; there is also the cutting of tool steel to improve its composite rate, the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00B22F7/02C23C24/10
Inventor 魏世忠龙锐苟新建薛年景赵举峰赵正栓李小强
Owner HENAN UNIV OF SCI & TECH
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