![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Heat treatment is an important basic technology of the machinery industry. Usually important mechanical parts and tools such as shafts, bearings, gears, connecting rods and the like are heat-treated, and as long as they are properly selected and properly heat-treated, they can make mechanical parts. The service life of the tool and die is doubled or even increased by a factor of ten, achieving the goal of “doing a good job of heat treatment and a few parts†and receiving a multiplier effect.
The traditional heat treatment, in terms of main control parameters, is mostly heat treatment with two parameters of temperature and time under normal pressure; in terms of process mode, it is mostly a single heat treatment. The effect of this heat treatment can only be simplification. To this end, we must vigorously develop multi-parameter heat treatment and composite heat treatment process.
Multi-parameter heat treatment
Vacuum heat treatment: This is a multi-parameter heat treatment with additional pressure. It has the advantages of no oxidation, no decarburization, bright workpiece surface, small deformation, no pollution, energy saving, high degree of automation, wide application range, etc. It is one of the fastest-growing new heat treatment technologies in recent years, especially in the material surface Great progress has been made in the modification. Many newly developed advanced heat treatment technologies, such as vacuum high pressure gas quenching and vacuum chemical heat treatment, also need to be implemented under vacuum. The use of vacuum heat treatment technology can greatly improve the quality and service life of structural materials, tools and molds, and is particularly suitable for the heat treatment of some precision parts. In industrialized countries, the proportion of vacuum heat treatment has reached about 20%, while China currently has about 1200 vacuum heat treatment furnaces, accounting for about 1% of the total number of heat treatment furnaces, which is a big gap with foreign countries. It is expected that with the technical progress of the heat treatment industry and the increasingly higher requirements on the quality of heat-treated workpieces, vacuum heat treatment will have greater development.
Chemical heat treatment: This is a multi-parameter heat treatment with additional components. General chemical heat treatment, such as carburizing, carbonitriding, carbonitriding, etc., belong to the additional single-component, double-component and three-component multi-parameter heat treatment. In recent years, a number of new chemical heat treatment methods using new technologies have been developed, such as vacuum chemical heat treatment, fluidized bed chemical heat treatment, ionizing metal, ion implantation, and laser surface alloying, which can improve the wear resistance and corrosion resistance of workpieces. Use performance. The application of rare earth in chemical heat treatment (ie, co-permeation with rare earth) can significantly increase the infiltration rate, shorten the treatment cycle, and increase the wear resistance and corrosion resistance of the infiltration layer. This is a major feature of China. In addition, solid solution chemical heat treatment is also a noteworthy trend. Inner Mongolia Agricultural Machinery Research Institute Huang Jianhong and others developed the nitrogenous martensitic treatment (N*M treatment) process, which was the first to obtain solid solution N nitrogen Nitriding for the purpose of martensite has been successfully applied to the production of shearing blades.
(3) Deformation heat treatment: This is a multi-parameter heat treatment with additional stress. Using the combination of pressure processing and heat treatment, the combination of deformation strengthening and phase transformation strengthening enables the material to achieve the dual purpose of forming and compounding. Deformation heat treatment can improve the comprehensive mechanical properties of the material, and can simplify the process, the use of waste heat, save energy and material consumption, significant economic benefits. Deformation heat treatment is widely used, from structural steel, bearing steel to high-speed steel. The most widely used in the industry today is forging residual heat quenching and controlled rolling. In the United States, the use of controlled rolling to produce high-hardness armored steel plates can increase the resistance to elasticity. China's Ordnance Industry System carried out experimental research on artillery and artillery parts hot die forging residual heat quenching, gun barrel rotary precision forging heat treatment, and shotgun steel core oblique rolling residual heat quenching, and achieved good results.
Composite heat treatment
Composite heat treatment is to compound two or more heat treatment processes, or to combine heat treatment with other process technologies, so that the combined effects of several processes involved in the combination can be obtained, the work pieces can obtain excellent performance, and energy conservation can be reduced. Cost, increase production efficiency. For example, the combination of nitriding and high-frequency quenching, the combination of quenching and sulfurization, and the combination of boronizing and powder metallurgy sintering. The aforementioned forging residual heat quenching and controlled rolling also belong to composite heat treatment, which are composite of forging and heat treatment, rolling and heat treatment, respectively. There are also some new composite surface treatment technologies, such as laser heating and chemical vapor deposition (CVD), ion implantation and physical vapor deposition (PVD), physical chemical vapor deposition (PCVD), which have significant surface modification effects. Applications at home and abroad are also increasing.
It should be pointed out that composite heat treatment is not a simple superposition of several single heat treatment processes. Instead, they must be organically combined according to the requirements of the performance of the workpiece and the characteristics of each heat treatment process in order to achieve the purpose of complementing each other and complement each other. . For example, due to the different processing temperatures of various heat treatment processes, it is necessary to consider the order of participating in the combined heat treatment process to avoid the offset effect of the subsequent process on the previous process.
Heat treatment plays an important role in giving full play to the performance potential of metal materials, improving the intrinsic quality of products, saving materials, reducing energy consumption, prolonging the service life of products, and increasing economic benefits.
The traditional heat treatment, in terms of main control parameters, is mostly heat treatment with two parameters of temperature and time under normal pressure; in terms of process mode, it is mostly a single heat treatment. The effect of this heat treatment can only be simplification. To this end, we must vigorously develop multi-parameter heat treatment and composite heat treatment process.
Multi-parameter heat treatment
Vacuum heat treatment: This is a multi-parameter heat treatment with additional pressure. It has the advantages of no oxidation, no decarburization, bright workpiece surface, small deformation, no pollution, energy saving, high degree of automation, wide application range, etc. It is one of the fastest-growing new heat treatment technologies in recent years, especially in the material surface Great progress has been made in the modification. Many newly developed advanced heat treatment technologies, such as vacuum high pressure gas quenching and vacuum chemical heat treatment, also need to be implemented under vacuum. The use of vacuum heat treatment technology can greatly improve the quality and service life of structural materials, tools and molds, and is particularly suitable for the heat treatment of some precision parts. In industrialized countries, the proportion of vacuum heat treatment has reached about 20%, while China currently has about 1200 vacuum heat treatment furnaces, accounting for about 1% of the total number of heat treatment furnaces, which is a big gap with foreign countries. It is expected that with the technical progress of the heat treatment industry and the increasingly higher requirements on the quality of heat-treated workpieces, vacuum heat treatment will have greater development.
Chemical heat treatment: This is a multi-parameter heat treatment with additional components. General chemical heat treatment, such as carburizing, carbonitriding, carbonitriding, etc., belong to the additional single-component, double-component and three-component multi-parameter heat treatment. In recent years, a number of new chemical heat treatment methods using new technologies have been developed, such as vacuum chemical heat treatment, fluidized bed chemical heat treatment, ionizing metal, ion implantation, and laser surface alloying, which can improve the wear resistance and corrosion resistance of workpieces. Use performance. The application of rare earth in chemical heat treatment (ie, co-permeation with rare earth) can significantly increase the infiltration rate, shorten the treatment cycle, and increase the wear resistance and corrosion resistance of the infiltration layer. This is a major feature of China. In addition, solid solution chemical heat treatment is also a noteworthy trend. Inner Mongolia Agricultural Machinery Research Institute Huang Jianhong and others developed the nitrogenous martensitic treatment (N*M treatment) process, which was the first to obtain solid solution N nitrogen Nitriding for the purpose of martensite has been successfully applied to the production of shearing blades.
(3) Deformation heat treatment: This is a multi-parameter heat treatment with additional stress. Using the combination of pressure processing and heat treatment, the combination of deformation strengthening and phase transformation strengthening enables the material to achieve the dual purpose of forming and compounding. Deformation heat treatment can improve the comprehensive mechanical properties of the material, and can simplify the process, the use of waste heat, save energy and material consumption, significant economic benefits. Deformation heat treatment is widely used, from structural steel, bearing steel to high-speed steel. The most widely used in the industry today is forging residual heat quenching and controlled rolling. In the United States, the use of controlled rolling to produce high-hardness armored steel plates can increase the resistance to elasticity. China's Ordnance Industry System carried out experimental research on artillery and artillery parts hot die forging residual heat quenching, gun barrel rotary precision forging heat treatment, and shotgun steel core oblique rolling residual heat quenching, and achieved good results.
Composite heat treatment
Composite heat treatment is to compound two or more heat treatment processes, or to combine heat treatment with other process technologies, so that the combined effects of several processes involved in the combination can be obtained, the work pieces can obtain excellent performance, and energy conservation can be reduced. Cost, increase production efficiency. For example, the combination of nitriding and high-frequency quenching, the combination of quenching and sulfurization, and the combination of boronizing and powder metallurgy sintering. The aforementioned forging residual heat quenching and controlled rolling also belong to composite heat treatment, which are composite of forging and heat treatment, rolling and heat treatment, respectively. There are also some new composite surface treatment technologies, such as laser heating and chemical vapor deposition (CVD), ion implantation and physical vapor deposition (PVD), physical chemical vapor deposition (PCVD), which have significant surface modification effects. Applications at home and abroad are also increasing.
It should be pointed out that composite heat treatment is not a simple superposition of several single heat treatment processes. Instead, they must be organically combined according to the requirements of the performance of the workpiece and the characteristics of each heat treatment process in order to achieve the purpose of complementing each other and complement each other. . For example, due to the different processing temperatures of various heat treatment processes, it is necessary to consider the order of participating in the combined heat treatment process to avoid the offset effect of the subsequent process on the previous process.
Heat treatment plays an important role in giving full play to the performance potential of metal materials, improving the intrinsic quality of products, saving materials, reducing energy consumption, prolonging the service life of products, and increasing economic benefits.
Jaw Crushers are used to reduce the size of many different types of materials in many applications. as a double-toggle Jaw Crusher. ... These combined motions compress and push the material through the crushing chamber at a predetermined size.
Crushing raw material takes its toll on your equipment. For every ounce of product that passes through your machinery, the lifespan of your equipment steadily decreases. This leads to decreased output and mounting maintenance and repair costs. We have created a solution, built on more than a hundred year`s worth of jaw-crusher experience.
Double Toggle Jaw Crusher,Small Jaw Crusher,Jaw Stone Crusher,Small Jaw Crush Machine
Shenyang Sanland Mining Equipment Manufacture Co., Ltd. , https://www.sanlandcrushers.com