Method for producing cold rolled high manganese steel strip overlapping composite lining plate

Abstract

The production process of superposed composite lining plate of cold rolled high manganese steel strip includes hot rolling high manganese steel billet into high manganese steel strip, water toughening treatment, cold rolling to produce cold rolled high manganese steel strip, making frame for the lining plate, and laminating cold rolled high manganese steel sheets inside the frame to form integral composite lining plate. The composite lining plate may be used in replacing traditional cast lining plate and has the original structure of high manganese steel maintained and raised initial hardness, strength and wear resistance.

Description

1. Technical field [0001] The invention relates to a method for manufacturing a composite liner widely used in the field of crushing and grinding, in particular to a method for manufacturing a liner in which high manganese steel strips are superimposed and compounded in this field. 2. Background technology [0002] The liners on the crushing, grinding, pulverizing, conveying and other machinery widely used in metallurgy, mining, electric power, building materials and other industries are the main wear parts, especially the ball mills used as crushing and grinding equipment, the liners are seriously worn and replaced frequently , The consumption is very large; at present, the main material for making liners at home and abroad is high manganese steel. The traditional manufacturing process is to directly cast a single liner made of high manganese steel through metallurgical casting, and perform water toughening treatment to form Austrian steel. As the high-manganese steel has t...

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Problems solved by technology

[0002] The liners on the crushing, grinding, pulverizing, conveying and other machinery widely used in metallurgy, mining, electric power, building materials and other industries are the main wear parts, especially the ball mills used as crushing and grinding equipment, the liners are seriously worn and replaced frequently , The consumption is very large; at present, the main material for making liners at home and abroad is high manganese steel. The traditional manufacturing process is to directly cast a single liner made of high manganese steel through metallurgical casting, and perform water toughening treatment to form Austrian steel. As the high-manganese steel has the characteristics of work hardening under high-energy impact wear conditions, it shows excellent wear resistance, and its production cost is low, so it has been widely used in the field of crushing and grinding; but according to modern According to the research, sufficient impact energy must be obtained for the work hardening of high manganese steel, and general grinding conditions cannot provide enough energy to promote its transformation. Completely, the grain is coarse, and it is easy to produce internal casting defects. The general hardness value is HRC<30, which seriously affects the wear resistance and serviceability of high manganese steel, and causes a lot of waste of materials.

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