Abstract: A method for calculating a carbon concentration distribution in a pulse carburizing process is provided. The method can calculate a carbon concentration distribution at a certain time in each process (a boost process or a diffusion process) during a pulse carburizing process, accurately describe a vacuum low-pressure carburizing process, and present a varying process of a surface carbon concentration and a carburized depth in the vacuum low-pressure carburizing process over time. Based on the method, a relationship of a surface transfer coefficient and a diffusion coefficient of a material with a carbon concentration distribution of a workpiece after carburizing may be established, whereby the surface transfer coefficient and the diffusion coefficient of a material can be calculated according to the performance of the workpiece after vacuum low-pressure carburizing.

Abstract: A method for rapidly calculating a carbon concentration distribution in a pulse carburizing process is provided. The method does not involve an iterative calculation process, can rapidly obtain a carbon concentration distribution at a certain time in the pulse carburizing process, distinguish between a boost process and a diffusion process based on a boundary condition, describe a vacuum low-pressure carburizing process, and present variations of a surface carbon concentration and a carburized depth in the vacuum low-pressure carburizing process over time. The method provided in the present application has high calculation efficiency, can be embedded in a computer such as an industrial personal computer with ordinary performance for use, may realize real-time display of a carbon concentration in a vacuum carburizing process, and can be used for industrial visual software.

Abstract: The present invention provides a method for calculating vacuum carburizing pulse time and a non-transitory storage medium. The method includes: determining a target surface carbon concentration, a target carburized carbon mass md, material parameters, a number of carburizing pulses, a left value Cl,l of a target surface carbon concentration low point, a right value Cl,r of the target surface carbon concentration low point, and an error E; obtaining a carburized carbon mass ml at Cl,l until ml?md; obtaining a carburized carbon mass mr at Cl,runtil mr?md; calculating Cl,m; and obtaining carburized carbon mass mm at Cl,m and a sum of boost time and diffusion time of all carburizing pulses, when |mm?md|?E, the sum of the boost time and diffusion time of all the carburizing pulses is pulse time.