Preparation method of non-stick pan coating layer for cookware

Abstract

The invention provides a preparation method of a non-stick pan coating layer for cookware. The preparation method specifically comprises the following steps that (1), a boron nitride material with thepurity being 99. 5%, namely a coating is prepared for standby application, wherein the boron nitride material comprises, by weight percentage, 43% of boron, 0.1% of diboron trioxide, 0.03% of carbonand the balance water; and (2), the prepared coating is melted and clad on a substrate, namely the inner surface of the cookware by adopting a laser cladding process so as to form the non-stick pan coating layer, wherein the parameters of the laser cladding process are characterized in that the laser power is 1500-3500 W, the scanning speed is 3-12 mm / S, and the powder feeding rate is 6-20 g / min.The preparation method has the advantages that the manufacturing process is relatively simple and easy to operate, and the cost is low; and the prepared non-stick pan coating layer for the cookware isprovided with a fluoride-free metallurgical bonded coating, does not react with acid and alkali, has good chemical stability, has high-temperature resistance and a high wetting angle, and is non-toxic and safe.

Description

【Technical field】 [0001] The invention relates to a process in the cooking process of cooking utensils, in particular to a method for preparing a non-stick coating layer of cooking utensils. 【Background technique】 [0002] The non-stick pan is one of the existing more commonly used pots. The reason why the existing non-stick pan is not sticky is that there is a coating called "Teflon" on the bottom of the pan. Teflon is a fluorine-containing resin, including polytetrafluoroethylene, polyperfluoroethylene propylene and various fluorine-containing copolymers. However, after research, it was found that at high temperatures, due to the influence of fluoride, the coating of Teflon would decompose and release harmful gases to the human body; according to the national mandatory standard "Food Containers" approved and implemented by the Ministry of Health on May 1, 1990 The Hygienic Standard for Polytetrafluoroethylene Coating on the Inner Wall stipulates: "The standard sets two re...

AI Technical Summary

Problems solved by technology

This solves the problem that the existing traditional non-stick pan coatings are easy to decompose harmful gases at high temperatures due to fluoride. However, since aluminum oxide or aluminum nitride is used as the transition layer, TiC is then deposited on the transition layer. , TiCN or TiN nanostructure hard ceramic layer, which makes the whole production process complicated, the coating structure has pores, incomplete melting of TiC, TiCN or TiN and cracks, and the mechanical bonding and adhesion of the coating is relatively unsatisfactory, relatively easy Wear, also has the defect of higher cost

Images