3. Product quality standards There are currently no national standards for Chinese mica products, only two standards:
(1) Standard for industrial raw material mica JC49-82
This standard is applicable to the processing of raw materials for electrical and telecommunication mica insulation materials. It is divided into five categories according to the largest effective area of ​​either side of the mica crystal. See Table 6.
(2) Mica film standard for electronic tubes JC52-82
This standard applies to high quality natural muscovite tablets. The diameter of the effective area is divided into ten specifications: Ñ„15, 17, 19, 21, 25, 30, 35, 40, 45, 50 mm. The percentage of the effective area to the total area should be in accordance with Table 7. The thickness, tolerance and thickness difference between any two points in the effective area shall comply with Table 8.
In the CNC machining industry, in addition to metal CNC machining, plastic CNC machining is also relatively common. The two are also very different in terms of machining, the selected tools are also different, and there are also essential differences in speed and cooling. Due to the internal stress of the plastic, it is easy to crack and deform, so in the process of processing, it is necessary to control the speed of the tool and the problems of cooling. In short, CNC machining of metal parts and plastic parts is essentially different in the selection of tools, programming of tool paths, determination of tool speed and determination of cooling schemes. It is necessary to fully select and design materials according to material characteristics and processing experience. Only by determining various factors can we produce efficient and qualified products.
Machining metal parts and machining plastic parts are two separate departments at SCZY, each with its own processing equipment, tools and processing technicians. This ensures the durability of the equipment and the experience and professionalism of the technicians. Please contact us to discuss CNC machining knowledge.
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