Heat treatment process of heavy truck gear
At present, foreign automobile manufacturers generally adopt isothermal annealing treatment for truck gear forging blank, and specify different isothermal annealing […]
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heat treatment
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Development of pre heat treatment of heavy truck gears
As we all know, the quality of gears is influenced not only by the steel itself, but also by the
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Heat treatment of automotive gear materials
The heat treatment strengthening technology of automobile gears should pay attention to the control of surface integrity, that is, to
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Experimental analysis on heat treatment of one speed gear
1. Microstructure analysis of pre heat treatment After ordinary normalizing, the metallographic structure of the first speed gear blank is
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Effect of pre heat treatment on heat treatment deformation of cylindrical gear
The purpose of pre heat treatment is to obtain uniform and fine structure and completely eliminate stress. The pre heat
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Deformation control of heavy truck cylindrical gear after heat treatment
Taking 9t one speed gear parts as an example, the effects of different pre heat treatment methods on the deformation
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Basic research on heat treatment of automotive gear materials
Through gene analysis and basic performance experiment of automobile gear materials, it is very important to master the basic parameters
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Heat treatment process for controlling gear deformation
The process tests of 9T 34556 speed gear sleeve with different heat treatment methods, different heat treatment process parameters and
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Pre heat treatment of gear blank of one speed gear
Through the process test of two different pre heat treatments on the deformation law of the parts after final carburizing
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Comparative test on the influence of pre heat treatment on the deformation of helical cylindrical gear
1. Test purpose Verify the influence of different pre heat treatment methods on the deformation of final carburized helical cylindrical
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Main factors affecting heat treatment gear deformation
Among the main factors affecting the gear heat treatment deformation, the only thing that can be improved by the heat
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Heat treatment production of ZHY Gear truck gear
The gearbox gear of heavy truck is one of the three major products of ZHY Gear. It has been supporting
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Effect of cold working on heat treatment deformation of helical gear
The machining method and residual stress of spiral gear will have a certain influence on the deformation of carburized spiral
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Effect of forging on heat treatment deformation of cylindrical gear
Forging can make the forging billet segregation, uniform structure and reduce the banded structure, which is conducive to reducing the
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Influencing factors of heat treatment deformation of heavy truck gears
The deformation of heavy truck gearbox gear after carburizing and quenching is caused by the gear in the process of
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Experimental results and Discussion on the effect of heat treatment process on full immersion corrosion of Automobile Gears
The mass loss rate time curve of automotive gear test materials after normalizing and isothermal annealing in 0.6mol/l NaCl solution
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Progress in heat treatment process of Automobile Gears
The development of automobile gear heat treatment technology not only implements more strict control on product quality, but also pays
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Heat treatment nitriding process of Automobile Gears
Heat treatment nitriding process is one of the traditional heat treatment processes. However, whether it can be successfully applied to
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Analysis of Gear Heat Treatment Defects
The gears installed in the transmission, reducer and differential undertake the tasks of changing speed, output torque and driving the
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Study on chemical heat treatment process of gears
1) Chongqing Changjiang diesel engine factory has carried out rapid gas nitrocarburizing process test and mass production assessment on 45
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Common heat treatment defects of gears and their prevention methods
1. Cracks 1) In the carburizing diffusion stage, the carbon potential is high, the carburizing layer carbon concentration is too
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Defects of gear heat treatment and its influence
Whether carburizing quenching, carbonitriding quenching, induction heating quenching or overall heating quenching, the possible heat treatment defects during gear quenching
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Failure analysis of heat treatment crack of spiral bevel gear
(1) Analysis of crack properties From the crack morphology, the crack originates from the stress concentration. Whether the root of
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Process and results of heat treatment crack failure test of spiral bevel gear
(1) Macro morphology of crack: observe the crack morphology of three pairs of spiral bevel gears from the appearance, as
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Defects of gear heat treatment and its influence
Various defects produced during heat treatment of gears will have potential or obvious adverse effects on their quality and service
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Summary of crack failure in heat treatment of spiral bevel gear
Three pairs of spiral bevel gears for reducer were heat treated in the heat treatment processing company according to the
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Analysis of Gear Heat Treatment Defects
Gear is the main part of power transmission in all kinds of machinery. During operation, the tooth surface of the
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Technical level of domestic gear heat treatment furnace
Computer technology is applied to the control of domestic heat treatment furnace, which realizes high precision and multi-function. Control accuracy:
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Causes and preventive measures of metallographic structure and heat treatment defects of rear axle gear
1. Defect content Including coarse martensite, excessive retained austenite as shown in figure (a), excessive surface carbides as shown in
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Development of gear heat treatment equipment
In addition to the old standard well carburizing furnace, deep carburizing well furnace, sealed box multi-purpose furnace, single and double
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New technology of gear heat treatment
ZHY gear senior engineer team proposed a new heat treatment process for obtaining Austempered bainite ductile iron, namely room temperature
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Development of new technology for gear heat treatment
Austenite Bainite Ductile iron has good comprehensive mechanical properties of high strength, high elongation and high impact value, as well
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Defects of gear heat treatment and technical improvement scheme
Gear heat treatment deformation is affected by many aspects, such as part shape, raw materials, forging and preliminary heat treatment,
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Defects of gear heat treatment and examples of technical improvement
The problem of spline hole distortion of xf-125 primary transmission gear by China First Tractor internal combustion engine company is
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Defects and technical improvement of gear heat treatment
The deformation of gear heat treatment is very complex, which is a comprehensive reflection of the factors affecting the deformation
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Research progress of gear chemical heat treatment process
1. Chongqing Changjiang diesel engine factory has carried out rapid gas nitrocarburizing process test and mass production assessment on 45
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Research progress of gear annealing and quenching and tempering
For a long time, the forging blanks of car gears are mostly normalized. In recent years, with the diversification of
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Gear material and heat treatment forming
1. Practice has proved that the general machine tool gears are made of medium carbon steel and treated by induction
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Analysis and preventive measures of heat treatment defects of automobile rear axle gears
Automobile rear axle gear is one of the important parts in automobile driving system. It transmits power in the process
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Gear materials and heat treatment technology in China
(1) Present situation ① The quality of gear materials is low, there are many defects in castings and forgings, and
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Analysis on the influence of distortion of hypoid gear cutting compensation heat treatment
1. Cutter compensation heat treatment distortion The tooth profile of hypoid gear is complex, which has the problems of difficult
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Analysis method of gear heat treatment contact zone offset
The tooth surface error caused by gear heat treatment distortion is the main reason for the offset of gear contact
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Heat treatment distortion law of hypoid gear
In the process of heat treatment, heating and cooling of hypoid gear, due to the uneven thermal stress and tissue
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Causes of deformation and heat treatment defects of rear axle gear and preventive measures
1. Defect content The automobile rear axle gear is a hyperbolic bevel gear with complex shape. The deformation is inevitable
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Development trend of gear heat treatment technology
1. Research and develop new steel materials for gears, such as 20CrNi2Mo steel, 17CrNiMo6 steel, etc. 2. Development of new
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Causes and preventive measures of hardened layer, hardness and heat treatment defects of rear axle gear
1. Defect content Including unreasonable distribution of hardened layer, heat treatment defects, surface hardness too high or too low heat
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Main influence factors of gear heat treatment deformation
In the process of gear heat treatment, due to various environmental factors and other external factors, gear deformation occurs. According
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Causes and control methods of gear heat treatment deformation
Gear is the main work piece in mechanical transmission, and it is also an important force unit. Due to the
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Specific control measures of gear heat treatment deformation
Gear deformation is affected by many factors. In order to effectively avoid tooth shape deformation during heat treatment and reduce
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Heat Treatment Process Check for Staggered Helical Gear Fault
The driving wheel of the staggered helical gear is made of 42Cr Mo, conditioned and tempered, while the driven wheel
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Brief introduction of distortion control technology in gear heat treatment
The distortion of gear heat treatment, especially the distortion of carburizing and quenching, makes the gear accuracy greatly reduced. In
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Possible defects in heat treatment of bevel gears and preventive measures
The possible defects in the heat treatment of 20CrMnTi spiral bevel gear are as follows: 1. Uneven depth of carburized
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Gear steel and gear heat treatment
Gear steel Steel C, is, man, Cr, Ni, Mo, Ti, 42CrMo: 0.38-0.45, 0.17-0.37, 0.50-0.80, 0.90-1.20, ≤ 0.30, 0.15-0.25. 20CrMnTiH: 0.17-0.23,
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Modulation heat treatment process of 45 steel in gear manufacturing
Quenching and tempering is the double heat treatment of quenching and high temperature tempering, which aims to make the workpiece