Preparation method and spraying device for hard non-stick coating on surface of light alloy

• Main Authors: CHEN GANG, WANG HONGJIE, SHI WENLU, YANG XIAOYU, QI ZEXING, LIU KAI, DU XIWANG
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: APPARATUS FOR MAKING BEVERAGES; APPARATUS THEREFOR; CHEMISTRY; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FURNITURE; HUMAN NECESSITIES; KITCHEN EQUIPMENT; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

The invention discloses a preparation method and a spraying device for a hard non-stick coating on the surface of a light alloy. The preparation method comprises the steps that pretreatment is conducted, specifically, the material mark and a to-be-treated area of an appliance are determined, and packaging protection is conducted on areas except the to-be-treated area; preparing a porous hard substrate layer; ultrasonic atomization spraying hole sealing is conducted, a volatile solvent is adopted to conduct wetting treatment on the substrate layer, and hole sealing is conducted through ultrasonic atomization spraying of a hole sealing agent containing modified polytetrafluoroethylene; sintering and curing: preparing the non-stick coating through negative-pressure low-temperature presintering and high-temperature sintering and curing. Compared with the prior art, the multifunctional spraying device is reasonable in structure, hole sealing agent particles can be effectively prevented from diffusing to the workin