Emergency soaking treatment process of tufftriding product

Abstract

The invention relates to an emergency soaking treatment process of a tufftriding product. The process comprises the following steps of: closing a tufftriding gas supply system and all heating systems, rush-sweeping a furnace hearth to ensure that N2 is introduced into the tufftriding furnace hearth continuously at a flow speed of 2-2.5M<3> / H, closing N2 rush-sweeping valves of the tufftriding furnace hearth as well as a front chamber and a rear chamber, cooling a workpiece with a tufftriding furnace, waiting for repairing of the device, keeping the supply of a device main power supply, an UPS(Uninterruptible Power Supply), nitrogen and compressed air, maintaining the furnace pressure of the device to be above 3mbar, maintaining continuous supply of the compressed air to a tufftriding device, after each device is restored normal, raising the temperature of the whole furnace, directly introducing tufftriding gas according to the process requirement by the furnace pressure or introducing tufftriding gas after the furnace hearth is rush-swept, after the tufftriding gas is introduced for 10 minutes, starting the device for automatically operating, and directly discharging the soaking product in the furnace hearth. The process provided by the invention can effectively guarantee that the product in the furnace hearth does not generate quality abrupt change, thereby ensuring the qualification rate of the product in the furnace hearth.

Description

technical field [0001] The invention relates to a nitrocarburization heat treatment process for a product, in particular to an emergency simmering furnace treatment process for a nitrocarburized product. When the products in the nitrocarburizing furnace cannot be automatically operated or adjusted according to the normal rhythm due to certain equipment failures or others, the process of the present invention can effectively ensure that the quality of the products in the furnace does not change suddenly, ensuring the pass rate of the products in the furnace. Background technique [0002] In the actual production of nitrocarburization, when the products in the furnace cannot be automatically operated or adjusted according to the normal rhythm due to certain equipment failures or other reasons, this situation is called simmering furnace, and the products will continue to burn in the furnace due to improper handling. When heated, the size of the product will expand or the metall...

AI Technical Summary

Problems solved by technology

[0002] In the actual production of nitrocarburization, when the products in the furnace cannot be automatically operated or adjusted according to the normal rhythm due to some equipment failure or other reasons, this situation is called simmering furnace, and the products will continue to burn in the furnace due to improper handling. Heated, resulting in product size expansion or abnormal changes in metallographic structure, resulting in product scrapping