Gate to Gate
Identity ID
83387cc8-93bb-44a5-92c7-2c982b3e823f
Process class
Associated ID
cd27e408-c7a3-4b14-8653-55b556168436
Included activities starts
Included activities ends
Description
Carburizing involves placing a workpiece made of low-carbon steel or low-alloy steel into a carbon-rich active medium, heating it to 850--950°C, and holding it at that temperature for several hours. This allows the carburizing medium to generate active carbon atoms on the workpiece surface, which are then absorbed and diffused into the surface layer, thereby increasing the carbon content of the surface layer to the desired level. More than 8% of the heat treatment processes. After carburizing, quenching and low-temperature tempering are applied to increase the surface hardness, wear resistance, and fatigue strength of the workpiece, while maintaining sufficient strength and good toughness in the core. This process represents the tempering of 1 kg of steel, corresponding to 1 kg of tempered steel, and should be used together with the production data for 1 kg of steel. The data are derived by merging production data from spherical roller bearings, cylindrical roller bearings, double-row angular contact ball bearings, and tapered roller bearings.
Activity Description
The carburizing process includes pre-treatment, packaging, heating, heat preservation, carbonization, decarbonization, surface treatment, inspection and testing, and final treatment. This dataset includes direct electricity consumption of the equipment, as well as consumption of propane and methanol carburizing agents.
Process Description
Carburizing involves placing a workpiece made of low-carbon steel or low-alloy steel into a carbon-rich active medium, heating it to 850–950 °C and holding it at that temperature for several hours, allowing the carburizing medium to generate active carbon atoms on the workpiece surface. These atoms are then absorbed and diffused into the surface layer, increasing the carbon content of the surface layer to a desired level. More than 8% of heat treatment processes. After carburizing, quenching and low-temperature tempering are applied to enhance the hardness, wear resistance, and fatigue strength of the workpiece surface, while maintaining certain strength and good toughness in the core. This process represents the tempering of 1 kg of steel, corresponding to 1 kg of tempered steel, and should be used in conjunction with the production data for 1 kg of steel.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The commonly used main types of carburizing can be divided into: solid carburizing, liquid carburizing, and gas carburizing. Solid carburizing is carried out in a solid-state medium by either burying the workpiece in an iron container filled with granular carburizing agent or coating the workpiece surface with a layer of carburizing paste, followed by heating in a furnace for carburization. Gas carburizing takes place in a gaseous medium, using carburizing atmospheres such as natural gas, cracked petroleum gas, or other endothermic or nitrogen-based controlled atmospheres. Liquid carburizing involves directly immersing the workpiece into a molten salt bath capable of decomposing to release active carbon atoms for heating and carburization. This process refers specifically to liquid carburizing, using propane-based and methanol-based carburizing agents.