Heat treatment deformation of carburized gear. Heat treatment deformation directly affects the accuracy, strength, noise and life of the gear. Even if the gear grinding process is added after the carburizing heat treatment, the deformation still reduces the accuracy level of the gear. ...
When tempered below 200°C, the strength and hardness will not decrease much, and the plasticity and toughness will basically remain unchanged. This is due to the segregation of carbon atoms without precipitation at this temperature. The solid solution strengthening is maintained.When tempering at a ...
The so-called quenching is to reduce the temperature of the material from the austenite region at a very fast rate to prevent the formation of pearlite or sorbite. The cooling from the austenite region to the Ms temperature will not cause carbon diffusion due to too short time ...
Although austenitic stainless steel has been widely used due to its excellent corrosion resistance, its tribological properties are poor, especially its low abrasion resistance or adhesive wear performance, and has a tendency to fretting wear, which hinders the need for corrosion resistance and Appl ...
Quenching and tempering is a double heat treatment of quenching and high temperature tempering, and its purpose is to make the workpiece have good comprehensive mechanical properties. ...
Even in the economic downturn, ductile iron is still developing. Some people call ductile iron a winner in inappropriate retreat, pointing out: Because of its high strength, high toughness and low price, cast iron still occupies an important position in the material market. Although the total output ...
With the changes in the international and domestic economic situations, market competition has become more intense, and various customers have put forward clear standards for the appearance of castings, and customers have higher and higher requirements for the appearance of castings. ...
Lithium bentonite and attapulgite are used in combination. According to the mixing process formulated for lost foam coatings, it has been verified that the suspension, thixotropy and coating properties of the coating have been significantly improved. The layer thickness is uniform, avoiding sand sti ...
According to the American AISI standard, stainless steel is represented by three-digit Arabic numerals. The first digit indicates the category, and the second and third digits indicate the sequence number. The 300 series stainless steel whose first digit starts with 3 is austenitic stainless steel w ...
At present, nodular cast iron pipes use cement lining as the internal anti-corrosion form, and zinc plus asphalt as the external anti-corrosion form, and have been manufactured in the production process, without the need for anti-corrosion treatment after construction and installation. This has beco ...
Since 1971, DBSpencer and MCFlemings of the Massachusetts Institute of Technology in the United States invented a new process of stirring casting (stir cast), that is, the preparation of Srr15%pb rheological slurry by rotating double barrel mechanical stirring method, semi-solid metal ( SSM) Foundry ...
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The thread cutting process depends on the structure of the machined parts and the CNC machine tool u
Oval gears are widely used in automatic machinery and instrument industries, and are a type of non-c
The cylinder telescopic sheath is a protective component that is installed on the oil cylinder, cyli
The manufacturing cycle is long. Operators are prone to fatigue. Once a failure occurs, it often tak
The Wu Steel Works has two workshops, one steelmaking workshop and the second steelmaking workshop.