Hammer head for crushing building stones, and manufacturing method of hammer head

Abstract

The invention discloses a hammer head for crushing building stones, comprising the following chemical components by weight: 0.33-0.40% of carbon C, 2.5-4.5% of chromium Cr, 0.3-0.5% of copper Cu, 0.5-1.0 of silicon Si, 0.5-1.0% of manganese Mn, less than or equal to 0.05% of sulfur S, less than or equal to 0.05% of phosphorus, and the balance mainly of ferrum Fe. The invention further discloses a manufacturing method of the hammer head for crushing building stones. The manufacturing method mainly comprises the following steps: (1) manufacturing casting solution, (2) casting the casting solution formed in the step (1) in a casting die, wherein the tapping temperature of the casting solution is 1550 DEG C to 1600 DEG C and the casting temperature is 1500 DEG C to 1550 DEG C; and (3) performing thermal treatment after casting: firstly, subjecting a working part and a hammer handle part of the hammer head to water quenching and air quenching, respectively, and then sequentially performing whole spray quenching, whole wind quenching and low-temperature tempering. According to the hammer head for crushing building stones, the working part has high comprehensive wearing resistance and the hammer handle part has good toughness.

Description

technical field [0001] The invention relates to a method for manufacturing a hammer, in particular to a method for manufacturing a hammer for crushing building materials and stones. Background technique [0002] Stone Crusher is a commonly used crushing equipment in metallurgy, mining, building materials and electric power industries. Its working principle is to rely on the high-speed rotating hammer head to hit the large-grained materials entering the crushing bin to achieve the purpose of crushing materials into small-grained materials. Therefore, The hammer head is the part that is most likely to wear and break. At present, most of the hammer heads used in stone crushers are made of forged steel (65Mn). 5 days ranging, thus greatly increasing the labor intensity of manual disassembly hammerhead. [0003] In view of this, we successively trial-produced hammerheads made of three materials: high manganese steel, high chromium steel, and high chromium cast iron-carbon steel ...

AI Technical Summary

Problems solved by technology

[0002] Stone crusher is commonly used crushing equipment in metallurgy, mining, building materials and electric power industries. Its working principle is to rely on the high-speed rotating hammer head to hit the large-grained materials entering the crushing bin to achieve the purpose of crushing into small-grained materials. Therefore, The hammer head is the part that is most likely to wear and break. At present, most of the hammer heads used in stone crushers are made of forged steel (65Mn). 5 days, thus greatly increasing the labor intensity of manual disassembly and assembly of the hammer head

[0003] In view of this, we successively trial-produced hammer heads made of three materials: high manganese steel, high chromium steel, and high chromium cast iron-carbon steel composite. After testing, we found that the high manganese steel hammer head has insufficient work hardening ability, and its service life is longer than that of forged steel. (65Mn) The hammer head is 1.5 times, and the improvement is not large; the high-chromium steel hammer head is easy to be interrupted due to its low toughness; the high-chromium cast iron-carbon steel composite hammer head is very hard because of the head (high-chromium cast iron) , the hammer head often cracks and peels off, leading to early failure

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