Surface treatment process for PVD wire drawing product

Abstract

The invention discloses a surface treatment process for a PVD (Physical Vapor Deposition) wire drawing product. The surface treatment process comprises the following steps: polishing the surface of a base material; electro-nickelling the surface of the polished base material; wire-drawing the surface of the electroplated base material; placing the treated base material into a PVD vacuum furnace and plating a chromium layer on the surface of the base material by adopting the PVD method; and continually plating a decorative film on the surface of the chromium layer by the PVD method. The surface treatment process has the advantages of shortening the process flow, promoting the rate of good products, shortening the production period and achieving quick delivery to meet the customer demands, effectively solves the shortcomings of electrochromism and can take the anti-corrosion effect of an electroplated plating.

Description

technical field [0001] The invention belongs to the sanitary industry and relates to a surface treatment process for PVD wire drawing products. Background technique [0002] PVD brushed products: The final film layer on the surface of brushed products is PVD decorative film, such as PVD brushed door locks, PVD brushed faucets, and PVD brushed door handles. Due to the different requirements of end customers for the effect of the film layer on the surface of the product, some require the surface of the product to be electroplated with a chrome layer after wire drawing, which is relatively simple; with the development of the market, more and more customers require the final film layer on the surface of the wire drawing product to be PVD Decorative film layer, PVD decorative film layer has various colors and is very beautiful. PVD decorative coating can prepare various nitride films (TiN, ZrN, CrN, TiAlN), carbide films and oxide films. The films prepared by multi-arc ion plati...

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Problems solved by technology

[0004] The electroplating line equipment used for electroplating chromium in the PVD wire drawing product processing technology has a large capacity, which increases the load of the electroplating production line and consumes a lot of power energy, water resources and human resources; the deposition speed of electroplating chromium is slow and takes a long time; Waste gas and waste water need to be invested in corresponding environmental protection treatment costs; and the prepared PVD wire drawing products are prone to stains, foaming, etc., resulting in a low yield rate; there are still chromium water marks and watermarks on the surface of PVD wire drawing products, which brings great difficulty to PVD pre-treatment , it is necessary to invest in cleaning and drying equipment for cleaning and drying, which increases the investment in fixed assets and the consumption of various energy and resources, and reduces production efficiency and quality assurance

[0005] Therefore, the current production of PVD wire drawing products is difficult, the production cycle is long, the process is long, the yield rate is low, the production cost is high, and it cannot adapt to the rapidly changing needs of the market, and cannot be shipped quickly to meet customer needs