Quenching heat treatment is a kind of metal heat processing technology, which has been produced for a long time and has a long history in China. Let's have a look at the development and current situation of quenching heat treatment industry.
Basic Introduction
Heat treatment is a kind of metal hot working technology that heat, heat and cool the metal material in a certain medium, and control its performance by changing the metallographic structure on the surface or inside of the material.
A brief history of development
In the process from the stone age to the bronze age and iron age, the role of heat treatment is gradually recognized by people. As early as 770-222 B.C., Chinese people have found in production practice that the properties 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 technology in the manufacture of agricultural tools.
In the sixth century BC, iron and steel weapons were gradually adopted. In order to improve the hardness of steel, the quenching process developed rapidly. Two swords and a halberd unearthed in yanxiadu, Yixian County, Hebei Province, China, have martensite in their microstructure, indicating that they are quenched.
With the development of quenching technology, people gradually find the influence of quenching agent on quenching quality. Pu Yuan, a native of Shu in the Three Kingdoms, once made 3000 knives for Zhugeliang in xiegu, Shaanxi Province. It is said that he sent people to Chengdu to get water for quenching. This shows that China has noticed the cooling capacity of different water quality in ancient times, and also the cooling capacity of oil and urine. The sword unearthed in the tomb of King Jing of Zhongshan in the Western Han Dynasty (206-24 A.D.) in China has a carbon content of 0.15-0.4% in the center and more than 0.6% in the surface, indicating that the carburizing process has been applied. But at that time, as the secret of personal "Craftsmanship", it refused to be spread, so it developed slowly.
Current situation of the industry
China is a big energy consumer, and the machinery manufacturing industry [1] is a very important part of it. With the continuous development of heavy industries such as parts and components, machinery manufacturing and so on, heat treatment plays an important supporting role in the revitalization and development of China's machinery manufacturing industry, and the development of machinery manufacturing industry will certainly drive the rapid development of China's heat treatment industry, provide a broad development space for the development of China's heat treatment industry, and the industry has a broad development prospect. Industrial insight analysis report on the development prospect and investment direction of China's heat treatment market in 2013-2016.
In the 12th Five Year Plan, it is specially pointed out that it is necessary to make full use of the industry information platform, promote new technology, guide enterprise innovation, vigorously develop energy-saving heat treatment; give full play to the advantages of technology research and development service platform to provide support for energy conservation and emission reduction in the industry; give full play to the role of Expert Committee think tank, and truly organize and recommend basic engineering projects. Dongguan, known as the world's factory, is the forefront of reform and innovation in the heat treatment industry by taking advantage of the opportunity of global manufacturing transfer.
Presumably, you have known about the development and current situation of quenching heat treatment industry through the introduction. The development prospect of quenching heat treatment in the future is very good.
On 2018-08-08 11:45:46
