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Production technology of high-strength cast product

A production process and high-strength technology, applied in the field of metal processing, can solve the problems of high cost and low production efficiency, and achieve the effect of increasing the speed of carburizing, improving work efficiency, and increasing carburizing temperature.

Inactive Publication Date: 2013-12-25
HENAN XINGZHI PATENT SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low production efficiency and high cost

Method used

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Embodiment Construction

[0010] The invention provides a production process of high-strength castings which can effectively improve working efficiency.

[0011] A production process of high-strength castings, comprising a carburizing step, the carburizing process is as follows:

[0012] a. Put the workpiece to be carburized into the carburizing furnace and heat it. When the temperature of the carburizing furnace reaches 800°C, the amount of oil dripping is 80-100 drops / minute, calculated with a stopwatch, and dripping for 2 hours;

[0013] b. After reheating to raise the temperature of the furnace to 850°C, the amount of dripping oil is 230-240 drops / minute, dripping for 1 hour;

[0014] c. When the temperature continues to rise to 880°C, keep the amount of dripping oil unchanged for 1 hour;

[0015] d. When the temperature of the furnace rises to 925±5°C, keep the amount of dripping oil unchanged, and start to keep warm for 3 hours.

[0016] In the present invention, by increasing the carburizing t...

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Abstract

The invention discloses a production technology of a high-strength cast product, comprising a carburization procedure. In the invention, carburization speed can be effectively improved by raising carburization temperature and increasing oil drip quantity in the process of carburization, so that the cast product can reach carburization requirements in the shortest possible time, thus the improving efficiency, shortening the carburization time and providing guarantees for the cast product to enter the next process and reducing production cost. In addition, the carburization layer of the cast product can reach a thickness of 1.1-1.4mm.

Description

technical field [0001] The invention belongs to the technical field of gold processing, and in particular relates to a production process of high-strength castings. Background technique [0002] Carburizing is the process of infiltrating carbon atoms into the surface layer of steel. It is also to make the workpiece of low carbon steel have a surface layer of high carbon steel, and then after quenching and low temperature tempering, the surface layer of the workpiece has high hardness and wear resistance, while the central part of the workpiece still maintains the toughness and toughness of low carbon steel. plasticity. The material of the carburizing workpiece is generally low-carbon steel or low-carbon alloy steel. After carburizing, the chemical composition of the steel surface can be close to that of high-carbon steel. After carburizing, the workpiece must be quenched to obtain high surface hardness, high wear resistance and fatigue resistance, and to maintain the stren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/44C23C8/46
Inventor 李新民吕长福
Owner HENAN XINGZHI PATENT SERVICE CO LTD
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