How Do Precision Casting Manufacturers Pickling?

Pickling is an indispensable step in the production of precision casting, which is a process in which the precision casting parts are immersed in an acidic solution and a variety of oxidizing substances and rusts on the surface of the steel are removed by chemical reaction. So, how is the precision casting manufacturer pickling?

1. When pickling precision castings, the staff need to wear hats, overalls, masks, protective glasses, rubber gloves, rubber aprons and rubber boots in advance to prevent acid from splashing on the skin.

2, the staff in the production of acid, to first into the tank water, and then slowly pour the acid into the tank. If it is necessary to prepare mixed acid, it is necessary to strictly follow the order of acid injection into the tank, adding hydrochloric acid first, then nitric acid and sulfuric acid at the end, and the order of acid injection cannot be reversed, which will cause acute reaction of acid in the tank, causing serious harm to the personal safety of staff and subsequent casting production.

3, in the transport of acid, to choose a special clamping and lifting tool. If the staff is working along the pickling tank that is higher than the ground, the operation process cannot be carried out standing on the edge of the tank.

4, the pickling tank should be equipped with a separate air extraction device, in the configuration of acid and casting pickling process, need to start the fan, at the same time, the pickling tank should be added around the barrier and the surrounding environment partition, to ensure that the acid and pickling process can be normal.

5, in the pickling work, the temperature should be controlled, and the working environment of pickling should meet certain prescribed standards.

6, precision castings in the tank, should be slowly into the acid, to avoid acid splash. At the same time, to ensure the acidic environment of the acid, it is strictly prohibited to bring alkaline substances into the acid tank. The precision castings after pickling should be cleaned immediately, and the acidity of the surface of the castings should be neutralized according to the process regulations.

7, lifting equipment, tool clamps, ventilation pipes and other devices should be regularly checked, if found to be corroded to be replaced in time, for the lifting machinery of the wire rope, sling, etc., should be regularly replaced to ensure the safety of pickling large precision castings. The pickling tank should be capped when not in use.

8, if in the pickling process, the skin of the staff contaminated with acid, should be cleaned immediately with water, the work site should be equipped with the necessary drugs.The pickling process of precision castings is complex and dangerous, so it needs to be carried out step by step in strict accordance with the regulations of pickling, so as to ensure the safety and reliability of casting production. Supreme Machinery, carefully do every precision casting products, speak with quality and reputation.