Pot body brazing double-bottom nitriding process

Abstract

The invention discloses a pot body brazing double-bottom nitriding process. The process comprises the following steps of 1) forming an auxiliary disc chuck; (2) carrying out double-bottom brazing on apot body, a heat conducting disc, the auxiliary disc chuck and an electric heating tube so that the pot body, the heat conducting disc, the auxiliary disc chuck and the electric heating tube are tightly combined into a whole to obtain a double-bottom pot body; 3) carrying out nitriding treatment on the pot body with the composite bottom to obtain a nitrided pot body; and 4) carrying out high-temperature baking on the nitriding pot body. According to the pot body brazing composite bottom nitriding process, firstly, the electric heating tube is brazed, and then nitriding treatment is conductedon the pot body with the composite bottom. The auxiliary disc chuck can prevent nitriding of the heat conducting disc, meanwhile, the fastening degree of the heat conducting disc can be improved, theauxiliary disc chuck can further strengthen and protect the problems of wrinkling, embrittlement, cracking and the like of the heat conducting disc caused by cold and hot changes in the using processof the bottom of an original double-bottom pot body, and then the service cycle of the pot is greatly prolonged. By means of the mode that the electric heating pipe is brazed first and then nitridation treatment is conducted, damage to the nitridation layer on the surface of the pot body can be avoided when the electric heating pipe is brazed, and it is guaranteed that the pot body has the ideal antirust effect and the attractive appearance.

Description

technical field [0001] The invention relates to the technical field of cooking utensils, in particular to a pot body brazing double-bottom nitriding process. Background technique [0002] Traditional pots generally adopt a single-layer structure, and the thickness of the pot body is usually made thinner in order to save costs. Due to the thin material, the pot body is easily deformed, and the pot body is heated unevenly. Some pots will add a single-layer or multi-layer double-bottom structure to the bottom of the pot, so as to achieve a thick-bottomed and thin-walled pot body structure, which will not increase too much cost and can significantly improve the deformation of the bottom of the pot. [0003] All the multi-purpose iron pots on the market now, or real stainless pots, usually need to be nitrided first before brazing the electric heating tube to form a layer of nitrided anti-rust layer on the surface of the pot body, but after brazing the electric heating tube In t...