Cast iron heat treatment technology for conveyor fitting

A conveyor and cast iron technology, which is applied in the field of cast iron heat treatment process for conveyor accessories, can solve the problems of poor toughness, short service life, poor wear resistance, etc., and achieve the effects of increased pass rate, prevention of deformation and cracking, and low cost of heat treatment

Inactive Publication Date: 2015-07-22
ANHUI CHANGCHENG TRANSPORTATION MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a cast iron heat treatment process for conveyor accessories

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] A cast iron heat treatment process for conveyor accessories, comprising the following steps:

[0014] (1) Preheating: Put the cast iron into the electric furnace, heat it to 500°C, keep it warm for 2 hours, and preheat the cast iron to make the temperature of the cast iron uniform;

[0015] (2) Heating: Continue heating the cast iron in step (1) to 850-940°C and keep it warm for 1-2h;

[0016] (3) Cooling: Cool the casting in step (2) to 700-780°C, keep it warm for 0.5-1h, then place it in the air and cool it naturally;

[0017] (4) Tempering treatment: in the step (4), the cast iron in the step (3) is tempered in the electric furnace, the temperature is controlled at 240°C, and the temperature is kept for 2 hours;

[0018] (5) Cooling again: cooling to 15-20°C.

[0019] Based on the above: the beneficial effect of adopting the technical solution of the present invention is: through the process steps of preheating-heating-cooling-tempering-recooling, the present inven...

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PUM

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Abstract

The invention discloses a cast iron heat treatment technology for a conveyor fitting and relates to the field of cast iron heat treatment. The heat treatment technology comprises the technical steps of preheating, heating, cooling, tempering treatment and re-cooling. The heat treatment technology employs rapid cooling, effectively reduces temperature before the cooling and stress generated during the rapid cooling, allows cast iron to be naturally cooled, further avoids the problems of deformation and cracking of the cast iron due to the excessive stress, improves abrasive resistance and toughness of the cast iron, greatly increases a yield of the cast iron fitting, and is simple and low in heat treatment cost.

Description

technical field [0001] The invention relates to the field of cast iron heat treatment, in particular to a cast iron heat treatment process for conveyor accessories. Background technique [0002] In recent years, due to the development of industry, the demand for conveyors has also increased, and the application of cast iron accessories for conveyors has continued to expand. At present, domestic research on cast iron has been carried out in many aspects, but how to improve the wear resistance and toughness of cast iron has always been It bothers us. So far, the cast iron parts produced by domestic factories generally have short service life, poor wear resistance, poor toughness and other problems. For this reason, we provide a cast iron heat treatment process for conveyor parts to improve the quality of cast iron parts. Poor wear resistance and toughness, prolong the service life of cast iron fittings. Contents of the invention [0003] The technical problem to be solv...

Claims

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Application Information

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IPC IPC(8): C21D5/00
Inventor 雷向文
Owner ANHUI CHANGCHENG TRANSPORTATION MACHINERY MFG
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