Is engaged in the plastic mold industry colleagues all know that there are many factors affected the accuracy of product size, influence each other and form a cross. Jiezhen mold below small make up take you with analysis of factors affecting plastic mold products dimensional accuracy.
Product size error: delta = the delta s + delta z + delta c + delta a
Type in the delta - products overall shape error
Delta s - plastic shrinkage fluctuations caused by the error of the products
The delta c - mold wear error caused by the products
Delta a - mold installation, fit clearance error caused by the products
Delta z - molding parts manufacturing precision of the error caused by the products
There are many factors affected the accuracy of product size, influence each other and form a cross:
(1) forming materials, such as plastic shrinkage rate fluctuation.
(2) the processing conditions, such as mold temperature, injection pressure, holding time and so on.
(3) the shape and size of the product. Shape is uneven contraction of complex; Wall thickness change is uneven contraction; Slope is low accuracy.
(4) die structure, die manufacturing, mold assembly accuracy, mold wear.
(5) occurring in the process of manufacturing error.
(6) after molding conditions. Mainly refers to the measurement error and storage.
Note: the above information by dongguan jiezhen Plastic mold factory to sort out on the Internet, welcome to reprint, indicate the source!