The external surface of the speaker shell must be smooth, no flashing or burrs are allowed, and the inner surface of the part has roughness Influencing factors of plastic dimensional accuracy There are many factors affecting the dimensional accuracy of plastics, and they are also very...
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The external surface of the speaker shell must be smooth, no flashing or burrs are allowed, and the inner surface of the part has roughness
Influencing factors of plastic dimensional accuracy
There are many factors affecting the dimensional accuracy of plastics, and they are also very complicated, but the main ones are as follows:
(1) Manufacturing error of molded parts:
The manufacturing error of the molded parts includes the processing error of the molded parts and the installation and fit errors.
Generally, the manufacturing tolerances of molded parts should be controlled at about 1/3 of the corresponding tolerances of plastics, usually IT6-9.
(2) Wear of molded parts:
The main reason for the wear of molded parts is the flow of plastic melt in the cavity and the plastic part and cavity during demolding.
Friction, and the latter is mainly caused by wear.
(3) Plastic molding shrinkage:
Molding shrinkage is not an inherent characteristic of plastics, it is a comprehensive characteristic of materials and conditions, which change with the influence of the structure of the product, process conditions, etc.
Hot Tags: plastic speaker shell accessories, China, suppliers, factory, customized, quotation, made in China, outdoor plastic wheeled garbage bin mould, Industrial Large Garbage Can mould, Plastic Telephone Injection Mould, Air Cooler Mould, Industrial dustbin mold, video doorbell phone intercom shell mould
The external surface of the speaker shell must be smooth, no flashing or burrs are allowed, and the inner surface of the part has roughness
Influencing factors of plastic dimensional accuracy
There are many factors affecting the dimensional accuracy of plastics, and they are also very complicated, but the main ones are as follows:
(1) Manufacturing error of molded parts:
The manufacturing error of the molded parts includes the processing error of the molded parts and the installation and fit errors.
Generally, the manufacturing tolerances of molded parts should be controlled at about 1/3 of the corresponding tolerances of plastics, usually IT6-9.
(2) Wear of molded parts:
The main reason for the wear of molded parts is the flow of plastic melt in the cavity and the plastic part and cavity during demolding.
Friction, and the latter is mainly caused by wear.
(3) Plastic molding shrinkage:
Molding shrinkage is not an inherent characteristic of plastics, it is a comprehensive characteristic of materials and conditions, which change with the influence of the structure of the product, process conditions, etc.
Hot Tags: plastic speaker shell accessories, China, suppliers, factory, customized, quotation, made in China, outdoor plastic wheeled garbage bin mould, Industrial Large Garbage Can mould, Plastic Telephone Injection Mould, Air Cooler Mould, Industrial dustbin mold, video doorbell phone intercom shell mould
