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How to assure the dimensional accuracy for injection product
Upadta time:2013/7/31 9:01:23

 What factors are related to the size of injection product? How to control the product requested size in the range of tolerance? In a word it can be sum up in below four poins:

1. The size of injection product is correspond with the size of injection mould, you can read the article named the determing method for the size of injection mold. It shows the relationship between the product size and injection mould size. In short,in order to assure the dimension accuracy of injection product, first to do is make sure the size of injection mould meet the accuracy requirement.
2. Plastic material has a great influence on the injection product. We should try to select the contract performance and stable material. Contractibility mainly contain thermal contraction of material, elastic recovery,plastic deformation, after-contraction, aging contraction etc.If the contractibility is unstable will lead to the product size unstable and quite big changes.
3. Injection moulding parameter. In the period of die trial, we should determine the correct and stable moulding parameter, and cannot adjust the injection molding parameter randomly. The change of moulding parameter will cause the corresponding change of product size.
4. Measure time. After injection moulding, injection prodcut should cooling completely and then to measure the size. To do that will make the size most accurate.

Professional injection mold,die casting mold,plastic products OEM manufacturer.

With more than 20 years industrial experience in the field of  injection mold and die casting mold, we can provide  the one-stop service including design and development, mold fabrication, production, products processing etc.


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Fax number: +86-769-8534 4896 Customer service hotine: +86-769-8554 4196 Email:sales-fb@alwinasia.com
Xin an Community,Chang an,Dongguan City,Guangdong Province,China.
Keywords: plastic molds,injection mold,mold for plastic,mold injection,injection molding