High wear-resistant ally and production method thereof

Abstract

The chemical composition of high-weaability alloy contains 0.4-1.5% of C, 6.0-20% of Mn, 1.0-3.0% of Cr, 0.5-4.0% of Ni, 0.05-0.25% of modifying agent and Si, S and P, in which Si content is less than or equal to 0.8, S content is less than or equal to 0.04 and P content is less than or equal to 0.06. Its prdouction process includes the steps of cast moulding, smelting in electric furnace and pouring-casting. It is characterized by that cooling temp. is controlled at 450-949 deg.c, it adopts water-quenching and natural cooling processes, and uses mechanical machining process to make casting finished product. As compared with similar products its wearability can be raised by 30-70%, and said alloy can be used for making various wear-resistant components.

Description

(1) Technical field [0001] The invention relates to a high wear-resistant alloy and a production method thereof, in particular to a cast wear-resistant steel (iron) casting and a manufacturing process thereof. (2) Background technology [0002] Casting wear-resistant (anti-)steel (iron) castings is a large-scale and wide-ranging consumable material. It is mainly used in mining machinery, road construction machinery, railway facilities, and transportation machinery. With the rapid development of national economic construction, the demand for wear-resistant alloys is increasing, such as the manufacture of various wear-resistant linings, jaw plates for jaw crushers, hammer heads, bucket teeth, and elbows for concrete delivery pipes. , Blasting head blades for shot blasting machines, etc., especially the requirements for wear resistance are getting higher and higher, in order to prolong the service life, improve production efficiency and reduce production costs. [0003] The we...

AI Technical Summary

Problems solved by technology

At present, the traditional austenitic wear-resistant steel (Hadfield, the British, invented this steel in 1882 and named it) is basically used. The process includes casting modeling (core making)-electric furnace melting-casting casting-cooling-sand cleaning- Reheating-water toughening-cooling cleaning-machined casting finished products, in which the water toughening treatment is not allowed to be lower than 950 ℃ forbidden zone (China, the United States, Japan and other countries are all set at 1080 ℃, 1050 ℃, 1000 ℃, greater than and equal to 950 ℃ ℃), which seriously limits the improvement of the wear resistance of castings, and the sand cleaning of traditional castings will cause great pollution to the environment