Coating aluminum sheet and technological process for manufacturing same

Abstract

The invention discloses a coating aluminum sheet which comprises a substrate body and a plate body layer. The plate body layer comprises main materials and auxiliary materials, the main materials comprise coating pigment and diluent, the auxiliary materials comprise calcium powder, color powder, a defoaming agent, a complex compound and a flatting agent, and the plate body layer is mainly composed of epoxy resin materials. When drilling is conducted, the plate body layer can stick to and fix the position of the head of a drill bit, the positioning effect on the dill bit in the downward drilling process is achieved, and the hole position positioning precision in the drilling process is improved. Due to the fact that the surface hardness of the plate body layer is lower than that that of the substrate body, the drill bit can drill through the surface of the plate body layer more easily, tool face abrasion of the drill bit is reduced, the sharpness of the tool face of the drill bit can be well guaranteed, the situation that the drill bit is broken in the drilling process due to the fact that the surface is too hard is reduced, and debris produced in the drilling process can be discharged to the outside in time, so that the hole wall surface inside a hole drilled by the drill bit is smoother, and the effect of improving the hole wall quality of the drilled hole is achieved. A manufacturing technology of the coating aluminum sheet is easy and convenient to operate and convenient to process.

Description

【Technical field】 [0001] The invention relates to a coated aluminum sheet used for circuit board drilling and processing consumables. 【Background technique】 [0002] With the continuous progress and development of society, the requirements for high precision of electronic products are getting higher and higher. The development of high-precision electronic products directly puts forward higher precision requirements for circuit board processing. At the same time, it also makes the positioning accuracy of circuit board holes and the quality requirements in holes more and more high. However, the existing traditional common coated aluminum sheet includes an aluminum sheet main body and a plate layer coated on the surface of the aluminum sheet main body. Since the board body layer is a glue layer made of glue material, when the surface of the glue layer encounters water or encounters a high temperature environment higher than 25 degrees, the glue layer will melt, thereby giving ...

AI Technical Summary

Problems solved by technology

Since the board body layer is a glue layer made of glue material, when the surface of the glue layer encounters water or encounters a high temperature environment higher than 25 degrees, the glue layer will melt, thereby giving the user or It is extremely inconvenient for the operator to use, carry or store

Once the circuit board is processed with the ordinary coated aluminum sheet of the melted board body layer, it is easy to reduce the hole position accuracy and internal quality of the circuit board drilling

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