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Preparation method of high toughness and high wear resistance composite board
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A composite plate, high wear-resistant technology, used in manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of quality difference between workpieces and unstable overall product performance, improve product life, prevent quenching cracking, The effect of enhancing the overall mechanical properties
Active Publication Date: 2019-04-12
ANHUI CHENGUANG HIGH WEAR RESISTANCE TECH CO LTD
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Problems solved by technology
However, because it is air-cooled, it is restricted by factors such as air flow, local temperature changes, air humidity, and workpiece spacing during the processing process. The overall comprehensive performance of the product is unstable, and the quality of the workpieces varies.
Method used
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Embodiment 1
[0053] After cleaning the surface of the substrate and the wear-resistant alloy plate (component A), they are installed together, heated to 850°C, and welded into a composite body. The composite body is placed in a heating furnace for 3 hours at 300°C and 3 hours at 650°C. Heat it to 930°C for 5 hours, take it out, put the composite board matrix of the composite body upright and immerse it in water, the immersion depth is 10-15mm, and the immersion cross-sectional area is (800*60)mm 2 , the other parts are exposed on the water surface, and the exposed part is air-cooled as a whole. After the temperature is cooled to below 300°C, the cooling time is 1h, and it is immediately placed in a tempering furnace, heated to 400°C, kept for 16h, taken out, and cooled to obtain a composite board. The hardness of the composite board prepared by this method is 65-68HRC, the surface has no cracks, the impact energy is 7.2-7.6Ak, the substrate of the composite board has no bending, and the pro...
Embodiment 2
[0055] After cleaning the surface of the substrate and the wear-resistant alloy plate (component A), they are installed together, heated to 850°C, and welded into a composite body. The composite body is placed in a heating furnace for 3 hours at 250°C and 3 hours at 650°C. Heat it to 950°C for 4 hours, take it out, put the composite board matrix of the composite body upright and immerse it in water, the immersion depth is 10-15mm, and the immersion cross-sectional area is (800*60)mm 2 , the other parts are exposed on the water surface, and the exposed part is air-cooled as a whole. After the temperature is cooled to below 300°C, the cooling time is 1h, and it is immediately placed in a tempering furnace, heated to 300°C, kept for 16h, taken out, and cooled to obtain a composite board. The hardness of the composite board prepared by this method is 67-70HRC, the surface has no cracks, the impact energy is 8-8.2Ak, the substrate of the composite board has no bending, and the produ...
Embodiment 3
[0057] The preparation method of Example 3 is basically the same as that of Example 2, the difference is that the composition of the wear-resistant alloy plate in the composite plate is an example of Group B, and the substrate is immersed in water for 1-1.5cm after standing upright, and other parts are exposed on the water surface , the bare part is cooled by blast, and the cooling time is 60min. The composite board prepared by this method has a hardness of 65-69HRC, no cracks on the surface, an impact energy of 7.8-8Ak, and no bending of the composite board matrix.
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Abstract
The invention discloses a preparation method of a high-toughness and high-wear-resistance composite board. The composite board comprises a matrix and a wear-resistant alloy board, and the preparationmethod comprises the following steps that 1, the matrix and the wear-resistant alloy board are cleaned and then welded into a composite body; 2, the composite body is preheated by adopting a two-section type heating and heat-preservation mode; 3, the composite body which is subjected to preheating is heated to 850-1050 DEG C, heat preservation is carried out on the composited body for 3.5-8 hours,the composite body is taken out from a furnace, and the composite body is partially immersed into a quenching agent and the wear-resistant alloy board is exposed outside the quenching agent for quenching; and 4, the composite body which is subjected to quenching is immediately placed into the tempering furnace for tempering and heat preservation for 16-25 hours at the temperature of 200-400 DEG C, and the composite body which is subjected to tempering undergoes furnace cooling to reach the room temperature to obtain a final product. The preparation method adopts the principle that the heat istransferred by metal in a limited and oriented mode, so that the comprehensive mechanical property of the composite board is improved, the hardness and the toughness of the composite board are improved, the matrix of the composite board is free of thermal deformation, and the processing time of quenching is effectively shortened.
Description
technical field [0001] The invention relates to the field of heat treatment technology of wear-resistant alloys, in particular to a manufacturing method for high-toughness and high wear-resistant composite wear-resistant parts. Background technique [0002] High-carbon, high-alloy wear-resistant materials are widely used in mining, metallurgy and other fields due to their high wear-resistant properties. Usually, the hardness of the wear-resistant material is directly proportional to the wear-resistant life. To increase the hardness of the material, it is also necessary to ensure that the material has a certain toughness, so that the material will not be brittle or broken during quenching or application. [0003] For example, the steel rolling coiler is a special equipment for coiling steel plates. During the movement of the plate from rolling to coiling, in order to ensure the one-way operation of the product, a conveyor roller and guide plates on both sides are installed on...
Claims
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Application Information
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