Equipment introduction

Pickling and phosphating equipment is a kind of equipment widely used in the process of metal surface treatment, which is mainly used for descaling, degreasing and phosphating the metal surface to improve the adhesion, corrosion resistance and decorative properties of the metal surface. The following is a detailed introduction of pickling and phosphating equipment:

I. Equipment Overview

Pickling and phosphating equipment usually consists of pickling tanks, phosphating tanks, washing tanks, drying equipment, etc. to form a complete production line. The equipment removes rust, oil and other impurities on the metal surface by chemical reaction, and forms a dense phosphate film on the metal surface, thus improving the performance of the metal surface.

 II. Working Principle

1. Acid washing process: metal parts are immersed into the acid washing tank, and the corrosive effect of acid is used to remove the rust and oxidized skin on the metal surface. The type and concentration of pickling solution are selected according to the type of metal and the degree of corrosion. 2.

2. Washing process: After pickling, the metal parts must be washed several times to completely remove the residual acid to prevent the subsequent phosphating process from being affected.

3. Phosphating process: The washed metal parts are immersed into the phosphating tank to form a layer of phosphate film on the metal surface by chemical reaction. The main component of the phosphate film is phosphate, which has good adhesion and corrosion resistance.

4. Drying process: After phosphating, the metal parts need to be dried to remove the surface moisture and improve the strength and stability of the phosphate film.