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　　The housing technology supports, connects the motor, transmission mechanism, switches, handles and ancillary devices, making it a complete outer component of the power tool entity. Electrical enclosure is a metal material with different cross-sectional shapes made of metal rods hot-melted and extruded. Many customers in the purchase of electrical housing can not identify its quality, today to give you a summary!

　　The following is the quality of the appliance shell identification methods:

　　1, marking check: whether the electrical shell and packaging on the product standard code and production license number and other identification.

　　2, surface quality: in addition to clean the surface of the shell, does not allow cracks, flaking, corrosion and bubbles and other defects, but also does not allow corrosion spots, electrical burns, black spots, oxide film detachment and other defects.

　　3, oxide film thickness: electrical equipment shell oxide film formed in the anodic oxidation, protective and decorative effect, available eddy current thickness meter detection.

　　4, sealing hole quality: electrical enclosure anodic oxidation, the surface leaves many gaps. If it is not sealed or sealed poorly, the corrosion resistance of the electrical enclosure will be reduced.

　　5, corrosion resistance: this indicator mainly affects the life of electrical equipment shell.