Heat treatment process for front blade of bucket of underground carry-scraper
A technology for scrapers and buckets, applied in the field of heat treatment process of scraper parts, can solve the problems of difficulty in improving wear resistance, high use cost, short service life, etc., and achieve long service life, improved performance, wear resistance good performance
Inactive Publication Date: 2021-05-25
衡阳市鑫诚和重型机械设备制造有限公司
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Problems solved by technology
[0002] At present, the tunneling parts of the underground scraper are divided into two parts, including the bucket and the front edge, and the smoothness of the excavation depends on the wear resistance of the front edge, and the front edge of the bucket of the underground scraper generally uses Steel castings usually need to be carburized during the casting process. Although the performance of the front edge of the treated bucket is better than before, the wear resistance has been difficult to improve. In this way, due to severe wear during use, the service life short, expensive to use
Method used
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Experimental program
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Effect test
Embodiment Construction
[0014] A heat treatment process for the front edge of an underground scraper bucket, which includes the following steps:
[0015] (1) Clean the processed steel castings with water, and after cleaning for 25-35 minutes, put the steel castings into an oven to dry;
[0016] (2) Put the dried steel castings into the preheating box for preheating, wait for the temperature to rise to 400-540°C, and stop preheating after 60-80 minutes of preheating;
[0017] (3) Put the preheated steel castings into the carburizing furnace for the first carburizing, raise the temperature to 540-560°C, pass ammonia gas into the carburizing furnace, and make all the air in the carburizing furnace Discharge, then slowly add infiltration agent and cleaning agent dropwise, stop dropping after holding the pressure for 4 hours, release the pressure to 120-150kPa at a speed of 15kPa / min, and cool the steel casting to 200-280°C;
[0018] (4) Put the steel castings that have been carburized for the first time...
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A heat treatment process for a front blade of a bucket of an underground carry-scraper is characterized by comprising the following steps: cleaning a processed steel casting; putting the dried steel casting into a preheating box for preheating; putting the preheated steel casting into a carburizing furnace for primary carburizing; putting the steel casting subjected to primary carburizing into the carburizing furnace again for secondary carburizing; putting the cooled steel casting in calcining surface for heat treatment; and then conducting natural cooling after calcining to room temperature to obtain a product. The prepared front blade of the bucket is good in wear resistance, high in hardness, good in corrosion resistance and uniform in permeation layer distribution, the performance of the front blade of the bucket is effectively improved, the service life is long, and the front blade has popularization and application values.
Description
technical field [0001] The invention relates to a heat treatment process for scraper components, in particular to a heat treatment process for the front edge of an underground scraper bucket. Background technique [0002] At present, the tunneling parts of the underground scraper are divided into two parts, including the bucket and the front edge, and the smoothness of the excavation depends on the wear resistance of the front edge, and the front edge of the bucket of the underground scraper generally uses Steel castings usually need to be carburized during the casting process. Although the performance of the front edge of the treated bucket is better than before, the wear resistance has been difficult to improve. In this way, due to severe wear during use, the service life Short and expensive to use. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a heat treatment process...
Claims
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IPC IPC(8): C23C8/26C23C8/22C23C8/80
CPCC23C8/26C23C8/22C23C8/80
Inventor 刘建华黄云生
Owner 衡阳市鑫诚和重型机械设备制造有限公司