Selection of stainless steel protective film thickness and pasting method

- Aug 21, 2020-

In the use of stainless steel protective film, it is often necessary to select its thickness. For example, a PE protective film of 0.05 mm was initially selected as the starting point for the test. The thickness of the stainless steel sheet is the lower limit, and the gap of the design stamping die is determined according to the value of the thickness without deviation. In this case, the double-sided film will virtually add four layers of protective film, an increase of 0.2 mm. Due to the thickness of the material, even if a part of the gap is offset, the parts will not be unloaded smoothly or even get stuck in the mold, and the mold may even be broken.

In order to solve this problem and reduce the thickness of the stainless steel protective film, the thickness of the protective film can be determined through multiple tests to meet the production requirements. The next step is to determine the viscosity of the protective film. Normally, although the PE protective film protects the parts, due to the long processing cycle and the high viscosity of the PE protective film, it is difficult to clean the protective film of the final processed part.

In view of this problem, it is also necessary to determine the viscosity of the stainless steel protective film according to its own needs. In this way, in practical applications, the chance of collision can be reduced first. Due to the filming, the entire process flow of stainless steel parts can be summarized as: sheet material → filming → full-page transportation → CNC blanking → transportation → deepening process → transportation → shaping → transportation → punching → transportation → cleaning → tearing film → transportation → Turner→transport, and finally inspect the material.

Judging from the above process flow, during transportation and the handover of various processes, the workpiece may be bumped. After using the stainless steel protective film, it is equivalent to insurance for six transportations, so the probability of bumping is reduced by 85.7 in the transportation section. %. At the same time, the reception between processes and the processing of this process also greatly reduce the occurrence of part bumps. At the same time, bumps are reduced.

In other words, after attaching a layer of stainless steel protective film to the surface of stainless steel parts, the problems of pad pits, bumps and scratches are basically eliminated. At the same time, it will also reduce the cost of the stretching fluid. In short, the sheet metal film not only improves the quality and production efficiency of the parts, but also increases the input and output rate and reduces the cost, shortening the production cycle of the parts.

In addition, the surface quality of the parts can also be significantly improved, and the production efficiency is improved, the product production cycle is greatly shortened, and the input-output rate is also improved. The use of stainless steel protective film in the production of stamping parts prevents scrapping caused by parts that are too deep to be repaired, and can reduce the usage of cleaning agents and lubricants and repair costs.