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Ion Nitriding of Small Holes and Narrow Slits
In the process of ion nitriding, the small holes and narrow grooves on the parts often fail to be nitridated (or the shallow hardness of the infiltrated layer is low), glow concentration and arc discharge are three problems. Through reasonable furnace loading and process parameter control, ion ni...
How to Detect Gas Leakage in Ion Nitriding Furnace
Generally, after a long period of wear and tear of the ion nitriding furnace, a certain amount of air leakage will occur. A slight air leak will not affect the normal nitriding quality of the workpiece, and a serious air leak will inevitably affect the quality of the nitriding treatment of the wo...
Metallographic Corrosion Principle of Carburizing Heat Treatment Workpiece
After the carburizing heat treatment of the workpiece, the heat treatment structures that need to be checked are: internal oxidation, non-marine structure, martensite, retained austenite, carbide, and core ferrite. How to corrode the sample correctly will directly affect the judgment of the carbu...
The Effect of Carbon Concentration On Mechanical Properties After Carburizing Heat Treatment
Carburizing heat treatment is currently a chemical heat treatment method widely used in machinery manufacturing. It heats low-carbon steel in a carbon-rich medium to a high temperature (generally 900-950°C), so that activated carbon atoms can penetrate the surface of the steel to obtain a high-ca...
20CrMnTi Gear Carburizing Heat Treatment
As anti-wear parts, carburized gears are widely used in mechanical transmission equipment. Carburizing heat treatment and low-temperature tempering can well guarantee the needs of its work. The carburizing heat treatment of gears has three technical indicators: the carbon content of the carburize...
Surface Decarburization of Heat-treated Products and Preventive Measures
Decarburization is a phenomenon in which the surface carbon content of steel decreases during heat treatment. The essence of decarburization is that the carbon atoms in the steel react with the atmosphere in the furnace such as hydrogen or oxygen at high temperatures to generate methane or carbon...
Pre-heat Treatment of Ion Nitriding Parts
The main purpose of the pre-heat treatment before nitriding of the parts is to make the core have the necessary mechanical properties, eliminate the internal stress during the processing, reduce the nitriding deformation, and prepare the organization for obtaining good nitriding layer performance...
Advantages and Application Scope of Gas Nitriding Heat Treatment
Gas nitriding is a heat treatment process in which the workpiece is placed in a closed space, filled with nitrogen, ammonia and carbon dioxide, heated to 500-580°C and kept for several hours or tens of hours. By controlling the heat treatment time and temperature, to meet the technical requiremen...
Selection of Thermocouple and Vacuum Gauge in Vacuum Heat Treatment Furnace
The structure of the thermocouple, the key component of the temperature in the vacuum heat treatment furnace (0~1300℃ heating interval), and the type, advantages and disadvantages of the thermocouple in the vacuum heat treatment furnace. Vacuum heat treatment technology has outstanding advantages...
Conventional Problems In The Work Of Vacuum Sintering Furnaces And Unsuitable Materials
The vacuum sintering furnace is mainly used for the sintering process of semiconductor components and power rectifier devices, and can be used for vacuum sintering, gas shielded sintering and conventional sintering. It is a novel process equipment in the semiconductor special equipment series. It...