Mechanical galvanized carbon steel clamping type pipe fittings and its preparation process

Abstract

The invention provides a mechanical zinc-plating carbon steel clamping pressing type pipe fitting, which comprises a carbon steel clampinging pressing type pipe fitting, wherein a zinc tin composite plating layer is respectively arranged on each of the inner wall and the outer wall of the carbon steel clamping pressing type pipe fitting. Meanwhile, the invention also provides a preparation processof the mechanical zinc-plating carbon steel clamping pressing type pipe fitting. By using the preparation process, the mechanical zinc-plating on the inner wall and the outer wall of the carbon steelclamping pressing type pipe fitting can be realized; the anti-corrosion performance of the carbon steel clamping pressing type pipe fitting is improved.

Description

technical field [0001] The invention relates to a technology for surface treatment of iron and steel parts, in particular to a mechanically galvanized carbon steel clamping type pipe fitting and a preparation process thereof. Background technique [0002] Mechanical galvanizing is in a solution without external electric field at room temperature, relying on the mechanical rolling energy of the roller and the rubbing of glass beads, using the surface energy to form a multiphase flow environment with collision and rubbing effects, according to the predetermined Zinc powder and chemicals are added to the thickness of galvanizing, and under the joint action of chemical deposition and mechanical collision, a smooth and bright galvanized layer is formed on the surface of the workpiece. The principle of this process is completely different from traditional electroplating and hot-dip plating, with low cost, low pollution, coating thickness can be controlled between 5-100 microns, no...

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Problems solved by technology

[0003] Mechanical galvanizing technology has been applied since the 1990s, but it is basically limited to small workpieces and standard parts. It is impossible to use mechanical galvanizing technology to galvanize the inner wall of carbon steel compression fittings with inner cavity. At present, carbon steel compression fittings The inner wall of the pipe fittings is mainly electro-galvanized or coated with resin coatings to achieve anti-corrosion purposes. Among them, it is difficult for electro-galvanized technology to galvanize the inner wall of carbon steel compression-type pipe fittings. The zinc layer obtained by electro-galvanized technology is relatively thin, and the zinc layer plays The anti-corrosion effect is limited, and it will cause serious environmental pollution. Electrogalvanized steel pipes and accessories have been banned from being used in the pipeline field; although resin coatings can achieve good anti-corrosion effects, the hardness of the coating formed by resin coatings is low. The coating is easily damaged during the installation of pipe fittings, which affects the anti-corrosion effect

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