Latest patent: An electroplating filter
In general, the electroplating filter is used to transport liquid at a temperature of -10°C to +80°C. The filter part and the body are all made of PP, PVDF, PVC and other materials. After a reasonable formulation, molding, processing, and acid filter A variety of PP advantages, with a strong anti-corrosion performance, and has high mechanical strength, no aging, no decomposition of toxins, etc., is the ideal equipment for conveying and filtering all kinds of strong and weak acids.
The main purpose
The electroplating filter is suitable for a wide range of areas, such as chemical, metallurgy, electric power, paper making, food, pharmaceutical, synthetic fiber and other industrial sectors for conveying corrosive or non-polluting media.
How to choose the type of plating filter
All along, the selection of acid and alkali resistant filters is one of the biggest headaches for the electroplating industry and the chemical industry. It is a bit careless, and damages equipment at a low level, causing accidents and even disasters.
According to Delphi's statistics, about 80% of the damage to chemical equipment is caused by strong corrosion. Therefore, the selection of materials must be taken into account when selecting a type of electroplating filter.
There is often a misunderstanding that stainless steel is a “universal material” and it is dangerous to use it regardless of media and environmental conditions. The following points for some commonly used chemical media talk about the selection of materials:
1. Sulfuric acid, chromic acid, nitric acid, as one of the strong corrosive media, sulfuric acid is a very widely used important industrial raw material.
Different concentrations and temperatures of sulfuric acid on the corrosion of the material are quite different, for the concentration of more than 70%, the temperature is less than 60 °C concentrated sulfuric acid, carbon steel and cast iron have good corrosion resistance, but it is not suitable for high-speed flow of sulfuric acid, It is not suitable for the material of the pump valve; common stainless steel also has limited use for the sulfuric acid medium. Therefore, the electroplating filter valve for supplying sulfuric acid is usually made of high-silicon cast iron or high-alloy stainless steel, but it is difficult and expensive to process, and therefore it is not favored by people. .
Fluoroplastic alloys have very good resistance to sulfuric acid. It is a patent material of the Shanghai Institute of Organic Chemistry of the Chinese Academy of Sciences. The patented technology introduced by our company in 2010 first used it to develop and produce corrosion- and temperature-resistant acid and alkali filters. Experiments by the Chinese Academy of Sciences show that there is no chemical medium that can react with it. Therefore, using PVDF (F46) is a more economical choice.
2. Alcohols, ketones, esters, ethers! The common alcohols include methanol, ethanol, ethylene glycol, propanol, etc. The ketones include acetone and butanone. The esters have various methyl esters. Ethers such as ethyl ether, ethyl ether, butyl ether, etc., which corrosive basic is not strong, so you can use ordinary stainless steel, the specific selection should also be based on the media properties and related requirements to make a reasonable choice. It is also worth noting that ketones, esters, and ethers are soluble in various rubbers, and that errors can be avoided when choosing sealing materials. It is recommended to choose PP+GF plating filter. Acid and alkali plating filter selection
Electroplating filter is the filter that uses the most filtration and transportation of acidic media. Secondly, the acid and alkali resistant pumps are also used more pumps. Some manufacturers use the electroplating pumps habitually because they do not solve the problem of electroplating filter dripping.
