In the process of automobile manufacturing and auto parts production, there are many parts cleaning processes. With the development of technology and environmental protection requirements, higher requirements are placed on cleaning equipment and cleaning agents. How do we adapt and satisfy the recommended cleaning agents? Production process requirements have become a key link.
What are the general requirements for metal cleaning of automotive parts?
(1) The cleaning speed is fast, and the metal surface dirt can be removed more thoroughly during the cleaning time set by the cleaning process.
(2) Non-corrosive to the cleaning machine and the parts to be cleaned
(3) Low cost of cleaning agent, environmental protection, mild smell
(4) The cleaning process does not leave insoluble matter on the surface of the cleaning object, does not produce new dirt, does not form a new cover layer harmful to the subsequent process, and does not affect the quality of the product.
According to the cleaning requirements, it is necessary to meet the process requirements to achieve a satisfactory cleaning effect. The cleaning equipment and cleaning methods, the material of the cleaning parts, the type of dirt on the surface of the parts, and the next process, water quality, and workshop environment must be fully considered.
Common metal cleaning equipment for automotive parts processing includes:
1, spray cleaning
2, high pressure deburring spray cleaning
3, ultrasonic cleaning
The material of the automobile gearbox is generally made of forged steel and aluminum alloy. The surface dirt of the parts is mostly low-viscosity cutting oil and cutting fluid. Most of them use spray cleaning method. When cleaning agent is selected, cleaning should be considered while considering cleaning ability. The defoaming ability of the agent, on the other hand, because the concentration of the rinse cleaning agent is generally low, ranging from 0.5% to 1.5%, the cleaning agent is required to have a good rust preventing ability.
Under certain process conditions, it is necessary to consider the influence of the subsequent process when recommending the cleaning agent, such as a certain process in the gearbox shaft and tooth production: grinding tooth-spray cleaning (intermediate cleaning)-shot blasting-spray cleaning (final Washing), in which the middle of the spray cleaning process should consider the next shot blasting process. After the cleaning agent cleaning parts are dried, the surface of the parts cannot be viscous cleaning agent residue or rust-proof cover film, otherwise it will affect the shot peening process and bring Quality defects.
At present, the selection of metal surface cleaning agents for automotive parts is complicated and diverse. With the development of cleaning agent technology, it is a trend for a single type of cleaning agent to satisfy a variety of processes and materials.
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