The making of different products requires different types of moulds. The type of material that is used for making the mould depends upon the product that is going to be made with the mould. These molds are so important that they are used all over the world on a daily basis for making numerous types of products. The same is the case with automotive mould making. Let’s know more about it.
Plastic injection molding produced thin walled plastic for various applications. The most popular product that is got from the process is plastic housing that is required for automotive dashboards, power tools, and household appliance and even for consumer electronics. Apart from largely being used in the automotive industry, the injection molds are used for other applications including making medical devices like syringes and valves. Automotive injection molds, however still take up a large percent in this method. Perfect as it might be, it is a method that also faces a number of challenges making it difficult to achieve accurate automotive injection molds. Below are some of the challenges and defects that make the process difficult.
Flash – This is occurrence of molten material when it seeps out of mold cavity and then solidifies. It means that after ejection of the part, there is the presence of a thin layer of material attached along the parting line of the part interfering with the final quality of the product. It is a problem that usually comes from a clamp force that is too low or injection pressure that is too high.
Warping – It is when the part goes though permanent bending when some sections end up shrinking much faster than others. This occurs as a result of cooling rate that is not uniform and is a very common challenge for the mold manufacturers.
Sink marks – The other difficulty that is faced when molding is the occurrence of sink marks. They are marks that result of shrinking of molten material that ends up filling voids that could be present on part sections that solidify first when the material gets injected into the mold. Usually, the sink marks occur when the injection pressure is too low or when the cooling rate is not uniform.
Bubbles – Bubbling also affects the possibilities of achieving the desired final automotive parts. The final product affected by this problem has bubbles on the surface affecting the look, feel and even the quality of the mold. It happens when the material used has too much moisture or when the injection temperatures are too high.
Unfilled sections – This is another problem that is commonly faced with automotive injection molds. It simply means that the final product will have sections that are not correctly and thoroughly filled because of the material flow rate that was too low or shot volume that was not sufficient enough during the process.
Ejector marks – When the ejection force is too high or when the cooling time is too short, then it is very possible for the injection mold to have ejector marks on it.
China injection molding requires attention and accuracy for the sake of achieving the highest quality of the molds needed. The best injection mold maker China should not only have the right tools and equipment but should get it right with the materials and tiny important details of the process.
About PTJMould Industrial Company Limited
PTJmould is a manufacturer of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer- plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.
Link to this article：How To Make Automotive Injection Molds From China Plastic Injection Molding Makers
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