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New manufacture technique of duplex metal composite lining board

A composite liner and new process technology, applied in the direction of rotors, engine components, pistons, etc., can solve the problems of poor composite quality, complex pouring process, layering, mixed pouring, etc., to improve composite quality, simplify pouring process, The effect of reducing maintenance costs

Inactive Publication Date: 2008-12-31
张剑鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the casting process of the current bimetallic composite lining board is relatively complicated and the composite quality is not good, and it is prone to delamination, mixed pouring, etc., resulting in the phenomenon that the lining board is not wear-resistant or cracked during use.

Method used

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  • New manufacture technique of duplex metal composite lining board

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Embodiment Construction

[0008] In conjunction with the accompanying drawings, the new manufacturing process of the bimetallic composite liner of the present invention includes molding and pouring, and the process steps are as follows: (1) use a special mold to shape, place the thin steel plate C welded with the steel brace D in the cavity, and the thin steel plate C divides the cavity into two separate parts, that is, the wear-resistant layer A and the ordinary steel layer B; several steel braces are welded on the thin steel plate to enhance the composite strength, and the thin steel plate can also be adjusted according to the thickness of the wear-resistant layer its shape and angle. (2) Use a self-made automatic pouring machine to pour molten steel, control the temperature of molten steel in wear-resistant layer A at 1350°C, and control the temperature of molten steel in ordinary steel layer B at 1510°C-1550°C. When pouring, pour wear-resistant layer A first, and wait for the molten steel When the ...

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Abstract

The invention discloses a new manufacturing process of a bimetal compound scaleboard, which comprises molding and pouring and includes the following steps: (1) a thin steel plate (C) welded with a steel shore (D) is put into a mold cavity, the thin steel plate (C) divides the mold cavity into a wear resistant layer (A) and an ordinary steel layer (B); (2) when pouring, the wear resistant layer (A) is poured first, when the height of the molten steel reaches 1cm, the ordinary steel layer (B) is poured, the height difference between the liquid in the two mold cavities is constantly kept at 2cm; 3) the temperature is increased to 980 DEG C, the heat preservation time is calculated according to the thickness of the liner by 0.5h / cm, after the heat preservation, the hardness of the scaleboard reaches 61-62HRC by quenching and the shock value reaches 8-10J / cm<2>. The new production process of the bimetal compound scaleboard simplifies the pouring process, improves the compounding quality of the scaleboard, improves the wear resistant property of the scaleboard, can prevent the scaleboard from fracture, and reduces the maintenance cost.

Description

technical field [0001] The invention relates to a bimetal composite liner, in particular to a new manufacturing process for a bimetal composite liner. Background technique [0002] At present, in China, barrel ball mills are widely used, mainly in metal mines, cement, power systems and other industries. The liner is the main structure in the barrel ball mill, and it is a key wearing part used to protect the barrel of the ball mill from the direct impact and friction of the grinding body and materials. Most of the ball mill liners currently used are made of high manganese steel. Although the toughness is good, the wear resistance is not good enough, the yield strength is low, and it is easy to deform during use, causing the ball mill liners to fall off due to the bolts breaking. In order to improve the wear resistance of the liner, most of the current liner adopts a bimetallic composite structure. However, the pouring process of the current bimetallic composite liner is rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P17/00B22D19/00B22D19/08C21D1/18
Inventor 张剑鑫
Owner 张剑鑫
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