A Valve Surface Treatment Method Considering Both Toughness and Rigidity

Abstract

The invention discloses a valve surface treatment method taking toughness and rigidity into consideration. The method comprises the following steps: (1) preparation of a base material A; (2) preparation of a base material B; (3) preparation of a compound emulsion; and (4) mixing: mixing the compounded emulsion and grinded base material A in proportion to prepare an initial material A; mixing the compounded emulsion and the base material B and carrying out centrifugal filtration under a vacuum condition for 1-3 hours to prepare an initial material B; and (5) coating. The method disclosed by the invention has the beneficial effects that the smeared initial material A reacts with the surface of a valve to form an inner membrane layer with certain rigidity; the initial material B is sprayed on the initial material A to generate an outer membrane layer with certain elasticity and toughness; after being impacted or scratched, the outer layer firstly generates elastic deformation and then rehabilitates so as to prevent the surface from being damaged; the inner layer can be used for providing plastic protection for the valve so as to prevent water leakage caused by defects such as pores of a valve casting; the inner layer is in seamless fit with the outer layer integrally so as to form a valve surface protective layer having both good toughness and rigidity.

Description

technical field [0001] The invention relates to a valve surface treatment method, in particular to a valve surface treatment method that takes both toughness and rigidity into consideration. Background technique [0002] With the increasing requirements for environmental protection and the development of valve surface coating technology, plastic powder spray processing technology has been widely used in the valve industry, especially the valves used in tap water, food, medical and health industries have sprayed the surface of the valve As an important means of protection against secondary pollution of the medium. At the same time, many valve manufacturers also use plastic spraying on the surface of valves as one of the means to improve product quality. [0003] Valve surface spray processing is to use thermosetting organic polymer plastic powder such as epoxy resin, polyester resin, polyurethane resin, etc., by spraying, melting, electrostatic powder spraying, etc. Chemica...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the plastic sprayed layer on the surface of the existing valve is relatively brittle, and it is easy to break and crack when encountering impact, so it cannot achieve the proper protection effect on the valve surface and effectively prevent the formation of air holes caused by castings. To solve the problem of water leakage, provide a valve surface treatment method that takes into account both toughness and rigidity