1, acidic cleaner
It refers to inorganic chemical reagents, such as triacid, which use their acidic chemical properties to react with oil stains, react with metals to release gas, and promote the separation of oil stains from metal surfaces. Generally, they are only used for cleaning ferrous metals. Acidic chemical cleaning agents have been gradually replaced by scouring because of their great harm to the environment and human body.
2, alkaline cleaning agent
Alkaline cleaning refers to cleaning with alkaline chemicals such as caustic soda. This effect is achieved by using the dispersion of alkali to oil pollution. It can also be cleaned at room temperature, but the cleaning effect is not very good. Electroplating plants generally use heating cleaning at about 80 degrees, and alkaline cleaning has limited cleaning effect on oil pollution.
3. Water-based cleaning agent
Metal oil sewage-based cleaning agent generally refers to a cleaning agent composed of surfactant, builder and deionized water in a certain proportion. Mainly neutral or weakly alkaline. Its main cleaning principle is to use the emulsification, penetration, dispersion and anti-redeposition ability of surfactants to clean oil stains.
4. Semi-water based cleaning agent
Semi-water-based metal cleaning agent refers to an oil-in-water or water-in-oil cleaning agent prepared by emulsification of active substances with water and solvent as cleaning media. For example, emulsion cleaners on the market and so on. Semi-aqueous cleaning agents are not widely used in the market. But its cleaning ability combines the advantages of water-based cleaning agent and solvent cleaning agent. The main factor that hinders its popularization is cost.
5, solvent cleaning agent
Solvent-based metal cleaning agents refer to organic solvents, such as alcohol, gasoline, kerosene, diesel oil, white electric oil, trichloroethylene and other traditional oily cleaning agents. Including widely circulated hydrocarbon cleaning agents, also belong to this kind of cleaning agents. The cleaning effect is good, but it can't be cleaned for water-based dirt, such as fingerprints. Water-based dirt can only be cleaned with water-based or semi-water-based cleaning agents.
How to choose metal cleaning agent
1, when choosing water-based cleaning agent or solvent-based cleaning agent, choose water-based cleaning agent if you want to use ultrasonic cleaning agent, and choose solvent-based cleaning agent if you want the solvent to volatilize quickly after cleaning and have antirust function for a period of time.
2. Because the water-based cleaning agent has low production cost and can be diluted with water, it is generally used in conjunction with an ultrasonic cleaning machine for cleaning. However, water-based cleaning agents do not have the function of maintenance and rust prevention, so it is recommended to use solvent-based cleaning agents for metal equipment with high operating environment requirements.
3. Before choosing a cleaning agent, all factors such as actual production process and use cost must be considered clearly before making a choice.
4. If the equipment has low requirements for foam and maintenance, you can boldly use water-based metal cleaning agent for cleaning. If there is no professional equipment, then spray and scrub with low-foam solvent-based cleaning agent.