Integral induction diathermy segmental time-controlled spray quenching process and device for mining scraper

Abstract

The invention relates to a mining scrapping plate integral induction heat-permeable segmented time-controllable spray quenching process and device. The process is characterized by comprising the following steps: (1) firstly putting a scrapping plate semi-finished product on a material pushing table (1), pushing a scrapping plate into an induction heat-permeable furnace (2), and heating the scrapping plate semi-finished product by using a profile modeling inductor; (2) pushing the scrapping plate semi-finished product to a sprayer (3) after the heating time ends, wherein the sprayer (3) is used for respectively aligning the middle section of the scrapping plate semi-finished product, a left-end axe and a right-end axe, and is used for simultaneously spraying water and quenching; stopping spraying the middle section when spraying water for 125-140 seconds, and stopping spraying the left-end axe and the right-end axe when spraying water for 4.5-5 minutes; (3) then conveying the scrapping plate semi-finished product to a continuous tempering furnace (4) to perform tempering at 240-260 DEG C. By adopting the mining scrapping plate integral induction heat-permeable segmented time-controllable spray quenching process and device disclosed by the invention, the problems that a conventional scrapping plate is high in heat treatment energy consumption, unstable in quality, low in production efficiency and long in production cycle can be solved, and a novel scrapping plate quenching production line can be put forwarded.

Description

technical field [0001] The invention relates to a mining scraper overall induction diathermy segmental time-controlled spray quenching process and device. Background technique [0002] Scraper is one of the main parts of mining scraper conveyor. For decades, our company has accumulated a lot of experience in designing and manufacturing scraper and feedback information from users. The company has made a lot of achievements in scraper material selection, heat treatment process and alloy steel water quenching process in recent years. Accumulated experience in using continuous quenching and tempering production line and applying induction hardening machine tools to treat scrapers, which laid the foundation for continuous quenching of scrapers. [0003] There are three heat treatment methods for mining scrapers, the first is overall quenching and tempering, the second is overall quenching and tempering + ax induction hardening, and the third is welding the middle section of the ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned first method heat-treated scraper has the disadvantages of: 1) the quenching and tempering quality is unstable and the consistency is poor

After overall quenching and tempering, the hardness of the middle section is higher, and the hardness of the ax is lower than that of the middle section. In order to take into account the requirements of the two parts and improve the hardness of quenching and tempering, it is easy to cause the problem that the hardness of the ax is slightly insufficient and the middle section is easy to break.

[0005] The above-mentioned second method of heat-treated scraper has the following disadvantages: 1) The quenching and tempering quality is unstable and the consistency is poor

2) High energy consumption and high cost of heat treatment

After quenching and tempering, shot peening treatment is performed first, and then the ax is quenched in sequence, which increases the process and prolongs the production cycle, and the cost is high

[0006] The above-mentioned third method of heat-treating the scraper has the following disadvantages: the scraper ax and the blanks of the middle section are made of forging and casting with different materials, reprocessed, and then welded into a whole

Its processing fee and material cost are high, and the production cycle is long, and the cost is the highest among the three methods

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