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Development and current status of quenching heat treatment industry

Quenching heat treatment is a kind of metal thermal processing technology. This kind of technology has been produced for a long time. It has a long history in China. So let us and Haituo Electromechanical come together to understand the quenching heat treatment industry. Introduction to development and status quo.

 

First, the basic introduction

Heat treatment is a metal thermal processing process in which a metal material is heated, insulated, and cooled in a certain medium to control its properties by changing the metallographic structure of the surface or interior of the material.


Second, a brief history of development

In the process from the Stone Age to the Bronze Age and the Iron Age, the role of heat treatment has gradually become known. As early as 770 BC to 222 BC, Chinese people have discovered in production practice that the performance of copper and iron will change due to the influence of temperature and pressure deformation. The softening treatment of white cast iron is an important process for manufacturing agricultural tools.

In the sixth century BC, steel weapons were gradually adopted. In order to improve the hardness of steel, the quenching process was rapidly developed. Two swords and a scorpion unearthed from Yanxia, ​​Yixian County, Hebei Province, China, have martensite in their microstructure, indicating that they are quenched.

With the development of quenching technology, people have gradually discovered the effect of quenching agent on the quality of quenching. The three-nation monk Pu Yuan once made 3000 knives for Zhuge Liang in the Shaanxi Diagonal Valley. According to legend, he sent people to Chengdu to take water and quench them. This shows that in ancient China, we noticed the cooling ability of different water quality, and also paid attention to the cooling ability of oil and urine. The Western Han Dynasty (206 BC to 24 AD) unearthed in China, the sword in the tomb of Jingshan King, the carbon content of the heart is 0.15 ~ 0.4%, while the surface carbon content is more than 0.6%, indicating that the carburizing process has been applied. However, at that time, as the secret of personal "craftsmanship", it was not allowed to be rumored, so the development was very slow.


Third, the status quo

China is a major energy consumer, and the machinery manufacturing industry [1] is a very important component. With the continuous development of heavy industries such as parts and machinery manufacturing, heat treatment plays an important supporting role in the revitalization and development of China's machinery manufacturing industry. The development of machinery manufacturing industry will also drive the rapid development of China's heat treatment industry, which is the heat treatment industry in China. The development provides a broad space for development, and the industry has broad prospects for development. “Industry Insights 2013-2016 China Heat Treatment Market Development Prospects and Investment Direction Analysis Report”.


The "Twelfth Five-Year Plan" points out that it is necessary to make full use of the industry information platform, promote new technologies, guide enterprise innovation, and vigorously develop energy-saving heat treatment; give play to the advantages of technology research and development service platform, provide support for energy-saving and emission reduction in the industry; give full play to the role of the expert committee, Carefully organize recommended infrastructure projects. Dongguan, known as the world's factory, takes advantage of the global manufacturing transfer, is the forefront of the reform and innovation of the heat treatment industry.
 


I think you have already introduced the development and status quo of the quenching heat treatment industry through the introduction of Haituo Electromechanical. The development prospect of quenching heat treatment in the future is very good.
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