Along with the development of the technology, the metal surface treatment technology is also in constant ascension, for metal surface treatment will be caused certain pollution to the environment, it is harmful to people's health, in order to be able to afforest environment, needs to improve the heat treatment technology, top made of hunan science and technology related professionals to share now heat treated five advanced technology.
1, the controlled atmosphere heat treatment
Controlled atmosphere heat treatment are mainly anti oxidation and decarburization, and achieve precise control of carburizing and nitriding. Close to user requirements, targeted to launch a variety of moderate price, style variety, superior performance of controlled atmosphere furnace. Most can achieve the optimization of process parameters, accurate prediction and control the distribution of carbon concentration, concentration distribution and permeability layer organization to obtain ideal; Can realize computer management, has a simple menu design, friendly man-machine interface.
2, vacuum heat treatment
Vacuum heat treatment technology further improve and promote the application and development, it has no oxidation and decarburization, after quenching workpiece surfaces clean and bright, high wear resistance, no pollution, high degree of automation, etc. Widely adopted in the production of industrial vacuum annealing, vacuum degassing, vacuum oil quenching, water quenching, true air quenching, vacuum tempering, vacuum carburizing heat treatment technology, etc. Vacuum heat treatment is the most popular heat treatment workshop one of the main technology.
3, induction heat treatment, and ion nitriding heat treatment technology
Induction heat treatment with high efficiency, energy saving, clean, flexibility and other advantages are widely used in the automotive industry, engineering machinery, petrochemical industry, nearly 40% of car parts can use induction heat treatment, such as crankshaft, gear, universal joint, half shaft, etc. Using induction heating, many products processing can be completed fully automatic or semi-automatic production line, improve the stability of product quality, reduce labor intensity, beautify the work environment.
4, quenching medium and cooling technology
The ideal quenching medium should have the following several characteristics: (1) the latter: fast cooling high temperature stage, slow cold low temperature stage. Eliminate the crack, reduce the quenching distortion. (2) environmental protection: no the volatilization of poisonous and harmful smoke or gas, nonflammable, easy to clean after quench, no corrosion to the equipment, does not stimulate the burned skin. (3) stable: after quench uniform and stable performance, the medium itself in a certain period of stable performance. (4) economic: high quality low price, small energy consumption.
5, adopt a new surface strengthening technology and promotion of nitrogen based atmosphere heat treatment
The original tool surface treatment is limited to steam treatment old methods, such as nitrogen, oxygen, generally can only increase the tool life by 30% ~ 30%. Nitrogen based atmosphere, is used to protect and chemical heat treatment, heat treatment can be achieved without oxidation decarburization heat treatment, brittle, and can avoid heat treatment nitrogen nitrogen-based atmosphere of chemical heat treatment, can reduce the defects such as oxidation, improve the quality of chemical heat treatment.