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.