Manufacturing method of bimetal electroslag founding antiwear hopper teeth set

Abstract

Bimetal electroslag casting anti-wear bucket teeth group manufacturing method, the bucket teeth are composed of tooth shank and tooth tip of different materials, the manufacturing process is based on the side of the tooth shank as the stacked surface, and the multi-layer split water-cooled crystallizer is also Superimposed upwards according to the front end of the tooth shank working surface, high chromium cast iron is used as the consumable electrode, and multiple tooth tips are cast by one electroslag melting casting. , to form a group of bucket teeth, and then use conductive cutting equipment to cut into individual bucket teeth. The bucket teeth manufactured by the present invention are of high quality, and the electroslag-cast tooth tips have high metal purity, dense structure, no looseness, and pinching. Slag, delamination and other defects, and the wear resistance is better than homogeneous castings or forgings, the tooth shank has high impact resistance and bending fatigue strength, easy to operate, low energy consumption, high production efficiency, and high material utilization rate.

Description

technical field [0001] The invention relates to a method for manufacturing anti-wear bucket teeth by electroslag melting, in particular to a method for manufacturing groups of bimetallic electroslag casting anti-wear bucket teeth. Background technique [0002] As we all know, the construction of mining, railway, highway, water conservancy, wharf and other projects is inseparable from shovel and digging machinery, and bucket teeth are the main vulnerable parts of shovel and digging machinery. For example, when digging hard ore and rock, the bucket teeth used by excavators are generally replaced within 7 days due to wear and tear, and the consumption is huge. [0003] The third-generation anti-wear material, high-chromium cast iron, has good anti-wear performance but low impact toughness. It cannot meet the anti-fatigue requirements of the bucket tooth working section for wear resistance and the roots for impact loads and bending loads. Therefore, at present, bucket teeth are...

AI Technical Summary

Problems solved by technology

For example, when digging hard ore and rock, the bucket teeth used by the excavator are generally replaced due to wear and tear in 7 days, and the consumption is huge

[0003] The third-generation anti-wear material, high-chromium cast iron, has good anti-wear performance but low impact toughness. It cannot meet the anti-fatigue requirements of the bucket tooth working section for wear resistance and the roots for impact loads and bending loads.

In recent years, bucket teeth with high-chromium cast iron embedded in high-manganese steel have appeared. Although the performance is better than that of single-material bucket teeth, there are many influencing factors in production, and the quality is difficult to control. Defects, its wear resistance is also lower than that of electroslag casting bucket teeth

[0004] Before this invention, there was a Chinese patent of "electroslag casting bimetallic electric shovel bucket teeth and technology", the application number is 88105135.7, the invention uses high chromium cast iron as tooth tip, low carbon alloy steel as tooth handle, and electric The slag casting method makes the two fused into bucket teeth, and the service life is more than three times longer than that of the integrally cast high-manganese steel bucket teeth. It happened to be the initial stage of arcing, the quality was unstable, and the machining allowance was large, so it could not be transformed into commercial production. However, this invention can clearly prove that the service life of electroslag casting bimetallic bucket teeth is much better than that of single-material integral casting buckets. tooth

Images