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Die size is not affected by the active portion of the tolerance
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B- partially affected by the activity of mold surface quality size tolerances 1.2.4 surface quality of plastic parts, including without spots, stripes, dents, bubbles, discoloration and other defects, as well as surface gloss and surface roughness. Must avoid surface defects, surface gloss and surface roughness based on the use of plastics requirements. The surface roughness of plastic parts with the main mold cavity surface roughness related. Generally, the mold surface roughness values lower than the plastic parts 1 and 2. The surface roughness Ra of the plastic parts is generally 0.8 ~ 0.2μm. 1.2.5 stripping slope known look-up table, the material is ABS plastic parts, its cavity stripping slope is generally 40 '~ 1o20' core stripping slope. 35 '- 40'2 plastic parts of the process analysis and design principles 2.1 plastic parts. (1) plastic products in life should be to ensure its functionality and performance. Therefore, based on plastics failure analysis, but also its theoretical design calculations and checking, as well as experimental testing; (2) in ensuring the functions and performance of plastic products under the premise of choice of materials used, it must also be considered a viable size and material costs for processing; (3) Most molded plastic parts after heat curing stereotypes, therefore, we must consider the impact of polymer rheology and morphological changes on the plastic parts; (4) Since the majority of plastic products as a variety of devices and equipment in the constituent elements, therefore, should be designed in a unified whole products. It should be in ensuring the overall quality of the premise, to minimize the cost of plastic products. |
