An essential prerequisite for the quality of the coating is an appropriate pretreatment of the workpieces. Depending on the type of coating material and the condition of the workpieces, it may be necessary to clean, degrease, remove paint, stain, filler, and sand before coating.
Hazardous substances are often used in this work. As with coating materials, the measures for the safety and health protection of employees must be determined in the risk assessment according to the type of work process and the substance and specified in the operating instructions. itv7 horse racing online
Cleaning, degreasing and stripping
Solvents or aqueous cleaners are used for cleaning, degreasing and stripping. Typical hazards when using solvents are skin degreasing, inhalation of harmful vapors and fire hazard.
The workplace limit values must also be complied with in accordance with the state of the art. In practice, long-term manual work is then carried out with suction and ventilation or the solvent is used in a closed system.
The aqueous cleaners are a type of detergent. They have the advantage that they do not release solvent vapors and do not cause a fire hazard, but they are usually irritating and the concentrate is usually corrosive. In addition to degreasing the skin, they can also lead to irritation and chemical burns. If there is a risk of splashing, there is a risk of eye burns. In addition, depending on the temperature, there is also the risk of scalding from the hot cleaner or burns from heated workpieces. In some cases, with extremely dirty workpieces or when stripping paint, the cleaner can also be blasted onto the workpiece as steam under high pressure. While cleaning, you can check itv7 horse racing online if you are into betting.
If workpieces such as stainless steel or non-ferrous metals do not have sufficient adhesion for the coating, they are pickled. As a rule, these pickles are caustic, sometimes caustic and poisonous liquids.
For large areas and in industrial production, they are used in the immersion process, in craft and for individual workpieces, stains are often applied with a brush.
In general, there is an increased risk of skin and eye burns, in addition, in the case of toxic stains, skin contact, ingestion or inhalation of vapors can result in dangerous poisoning.