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What Is The Rust Removal And Cleaning Process For Wrought Iron Surfaces?

The Wrought Iron Stair Handrail Supplier tells you that the rust removal and cleaning process of the Wrought Iron Stair Railing surface is:

1. Pretreatment of the surface of wrought iron products

Oxidation, welding slag, rust, grease, dirt and water on the surface of wrought iron products should be removed as much as possible, otherwise it will cause foaming, cracking, delamination and spalling of the coating (plating) layer. The so-called pre-treatment refers to the use of mechanical or chemical, electrochemical and other processes to eliminate the appearance defects before the coating (plating) of wrought iron products.

1. The main methods for removing rust and removing scale welding slag include manual treatment, mechanical treatment, spray disposal, chemical treatment (acid washing), electrochemical treatment and flame treatment.

2. Degreasing is for wrought iron products. Alkaline, electrochemical and other methods, currently available in the market for a variety of metal cleaning agents are also suitable.

Second, wrought iron products surface protection and decoration (coating, plating) process introduction and selection of materials and application processes.

In the case of wrought iron products, the usual coating and electroplating (hot plating), if used together, is not good for durability such as paint, plastic, rubber, asphalt, enamel, acid-resistant materials, anti-rust oil, and the like.

1. Non-metallic maintenance layer: One or several layers of organic and inorganic compounds are coated on the exterior of wrought iron products. Such as zinc, tin, nickel, chromium, copper, titanium and so on. Common methods are: electroplating, sputtering, hot dip plating, etc.

2, metal maintenance layer: wrought iron products are coated with a layer of metal or alloy that is not easy to rust. However, it is generally preferred to use hot dip galvanizing for the metal maintenance layer on the wrought iron product. Due to the professional degreasing and rusting of the plated workpiece before plating and high temperature immersion plating in 440 °C zinc melt, the coating can cover many defects and gaps and prevent rust afterwards (especially suitable for rust prevention of outdoor wrought iron products). ) and has excellent adhesion properties. Such as blackening the surface, blue, phosphate treatment.

3. Chemical maintenance layer: chemical and electrochemical methods are used to form a maintenance layer of non-metallic film on the surface of the wrought iron product.

Therefore, on the basis of the above, it is more and more important to select the brand of paint with strong affinity to the base and the aging resistance from the thousands of paint varieties currently on the market and reasonable application methods. Only the targeted choices will achieve the desired decorative effect and reduce the amount of maintenance work after several years.

Wrought Iron Stair Railing