The material part is the main factor like cast aluminum is a popular material for stamping parts in the automotive industry.
During the production process and because of the nature of cast aluminum, machining parts will continue to produce particles once they have been produced. These small aluminum particles cannot be removed. If you want to know more about the Welding Parts then you may visit http://asian-electronics.com/product/deep-draw-metals/.
If a specification asks for these particles to be removed, it is almost impossible to fulfill them properly. The type of contaminant in that part is important. In some cases, companies may want to limit the size of particles in that part, but neglect to determine whether they want to limit all types of particles or only certain particles.
Before specifying, manufacturers must know which types of particles will be on their part and how they will affect the performance of that part. If 250 microns of metal machine parts will make the engine fail, then it must be included in the specifications.
It seems logical to eliminate all particles at that size, but different materials react differently and may not need to be wasteful and spend time focusing on removing all particles if they are not relevant to the performance of that part. Finally, cleaning specifications must look at cleaning processes and settings.
Stamping parts are often tested in the laboratory, in lab conditions. The result is very accurate testing, but usually cannot be repeated in factory conditions. Laboratory tests are very important for specification design and should not be ignored – but keep in mind real-world conditions when applying results.
The general air condition of the plant will also be much dirtier than the lab where the part was initially tested. When designing specifications, these inevitable facts must be taken into account.