The Solution To Precision Bolt Oil Pollution


  Precision bolt cleaners can be classified according t […]

  Precision bolt cleaners can be classified according to their chemical properties. The choice of emulsified cleaning agent usually depends on the effectiveness of the next process, and the oil film containing the rust inhibitor can be retained on the precision bolt. The alkaline cleaning agent is used to remove corrosive dirt, and it is considered to be effective for quenching oil after heat treatment.

  1. Soluble emulsified cleaning agent

  Special long-bolt soluble emulsifiers typically contain clay, solvents, emulsifiers, builders, corrosion inhibitors, and a small amount of water. The function of water is to dissolve the emulsifier, which can dissolve the dirt on the surface of the precision bolt and also leave a rust-proof film on the surface. The emulsifiers and detergents in it hold greasy particles and dissolve them into cleaning agents containing solvents and oils. Emulsion cleaners are pure oil products in concentrated form, which become white milky liquids when diluted in water.

  2. Synthetic cleaning agent

  The long-bolt synthetic cleaner is different from the standard alkaline cleaner. The difference lies in the chemical composition. It is also an alkaline cleaner. Standard alkaline cleaning agents are inorganic, while synthetic agents are organic agents containing amine-based substances. These products are designed to remove alkaline residues from single-stage cleaning and are also good rust inhibitors. Synthetic cleaners are used for moderately difficult cleaning, such as quenching oils or quenching polymer solutions for cleaning precision bolt surfaces.

  3. Alkaline cleaning agent

  Alkaline cleaners are prepared by mixing detergent builders and alkaline earth metal salts of surfactants and are widely used, cleaning agents. The starting point for adding each of the salts and surfactants is primarily to ensure cleaning results and secondarily to be economical. The pH value of the cleaning agent is required to be around 7. The cleaning ingredients of such cleaning agents are hydroxides, silicates, carbonates, phosphates, borates, and organic compounds.

  Hydroxides provide high alkalinity, are relatively inexpensive, and can be added in small amounts to provide sufficient alkalinity and conductivity, which are important for electrolytic cleaning and saponification. The disadvantage is that it is difficult to rinse, and the non-saponification washing effect of dirt is not good. The pH value of a 1% concentration solution can reach 1.3. The alkaline cleaning solution can be either sodium salt or potassium salt, which is mainly used for the cleaning of steel alloy bolts.

  4. Acid cleaning agent

  Combination bolts are not an effective method for removing general dirt on precision bolts with acidic cleaners, and alkaline cleaners are usually used. It is very effective to use acid to clean special attachments such as oxide scale, and the famous process is acid leaching. In addition to rolling, welding, and heat-treating oxide layers, surface oxides, rust and corrosion products that affect the quality of electroplating or oil seals, and water-soaked deposits can be removed with acid. Commonly used organic acids such as sulfuric acid, hydrochloric acid, nitric acid, citric acid, and acetic acid. For the removal of phosphating film before high-strength precision bolt heat treatment, the first three cleaning processes are mainly used at present, but the corrosion of hydrogen should be prevented. The acid should contain the base acid and a corrosion inhibitor to prevent erosion of the delicate bolt surface, as well as a surfactant to enhance removal.

  5. Detergent

  Detergent cleaning agents mainly contain solvents, surfactants, and water.