TH39053B - Methods of vacuum carbonitride - Google Patents

Abstract

DC60 (30/01/46) Methods for vacuum carbonization, including the implementation of the vacuum carburization process on the treated object (workpiece) in a furnace for heat therapy under reduced pressure by supplying gas for carburizing into the kiln heated to a pre-determined temperature for carburization Stopping the supply of gas for carburization in order to diffuse carbon in the workpiece under reduced pressure. and the process of nitriding on the workpiece by gas supply for nitriding enters the furnace under reduced pressure after the temperature of the furnace fell The desired heat treatment properties such as hardness, depth of the effective box, toughness, etc. can be achieved in a short time. with new production capabilities Even in the case of workpieces made of low-grade steel or boxes made of hardened steel. Method for vacuum carbonization This includes: Implementing a vacuum carburizing process on the treated object (workpiece) in a furnace for heat therapy under reduced pressure by supplying gas for carburizing into the kiln heated to a pre-determined temperature for carburization Stopping the supply of gas for carburization in order to diffuse carbon in the workpiece under reduced pressure. and the process of nitriding on the workpiece by gas supply for nitriding enters the furnace under reduced pressure after the temperature of the furnace fell The desired heat treatment properties such as hardness, depth of the effective box, toughness, etc. can be achieved in a short time. with new production capabilities Even in the case of workpieces made of low-grade steel or boxes made of hardened steel:

Claims (3)

Disclaimers (all) that will not appear on the advertisement page: 1.Methods for vacuum carbonide treatment which include Process operations for vacuum carbonization on treated materials in Heat treatment furnace for vacuum carbonization on treated matter in Furnaces for heat treatment under reduced pressure by supplying gas for the The carbohydrate enters the furnace that has been heated to a predetermined carburizing temperature, conducting the diffusion cycle on the treated material by Stop paying Of the gas for carburizing while maintaining the carburizing temperature so that Spread the carbon in the treated object under reduced pressure for a predetermined time. First, on the basis of the intended effect box depth and process operations for nitriding on the treated material by gas supply for Nitride enters the kiln under reduced pressure after the kiln temperature is lowered. 2. Method for vacuum carbonide treatment according to claim 1 which consists of Using ethylene gas blended gas And hydrogen gas as a gas for carburizing. 3. Methods for the vacuum carbonide according to claim 1 or 2, consisting of control of the resulting box depth of the treated object after the suspension, which was subsequently performed. Nitration On the basis of time for nitriding