There is a obvious distinction between Die-casting and injection mold

Injection mold and Die casting mold is the basic difference is not the same material, one is plastic, one is the alloy, so Die-casting mold to bear much more than the pressure and temperature of the mold, the mold structure needs to strengthen the way feed, Flow channel, cooling design are not the same

1, Die-casting mold injection pressure, so the template is relatively thicker requirements to prevent deformation

2, Die-casting mold gate and injection molds different, need to do spure sperader decomposition of the high-pressure materials

3, Die-casting mold Die does not require quenching, because the Die cavity when the cavity temperature exceeds 700 degrees, so every time the equivalent of a quenching mold cavity will be more and more hard. The general injection mold to be quenched to HRC52 or more.

4. Die-casting mold cavity to the general nitriding treatment to prevent the alloy Die cavity.

5. General Die-casting mold corrosion is relatively large, the outer surface of the general blue treatment.

6. Compared with the injection mold, Die-casting mold with the activities of the part (such as Core pulling slider) with the gap to be larger,Because the high temperature of the Die-casting process will cause thermal expansion.If the gap is too small will cause the mold stuck

7. Die-casting mold with more demanding parting, because the alloy flow of plastic is much better than the high temperature and pressure of the material from the sub-surface flying out will be very dangerous

8. Injection mold generally by thimble, sub-surface, etc. can be exhausted, Die-casting mold must open the exhaust slot and set the slag bag (collecting cold material head);

9. Inconsistent molding, injection mold injection speed, a pressure injection. Plastic mold is usually divided into several sections of injection

10. Die-casting mold for a 2-plate mold, plastic mold different product structure is not the same

At the same time the following points need to pay attention to:

1, the runner is not the same Die-casting mold runner is relatively wide, feeding GATE area to calculate the size of the product size, the general GATE thickness of the product as far as possible not to exceed the product thickness (75% on it), Die casting mode feed only one , While the plastic mold can be used to point into the plastic, the potential plastic mouth (or diving thimble), horn feeding, large outlet directly feed.

2, because the high temperature of the Die-casting (670 degrees), the mold material with the cooling requirements of the material to do with hot just 8407, DAC55, SKD61, etc. (Die, slider, male and female mouth) To balance the flow channel to go to cool, male and female irrigation mouth, male and female templates have to cool.

3, mold demolition as simple as possible (to consider the direction of the burr to facilitate the development of post-processing, sub-surface to consider exhaust, as with the Die surface level, the template exhaust mill (0.15MM), to add flash Difficult to shape the product but also increase the vacuum.

4, the mold structure as simple as possible not with the top (because the aluminum chip will Die stuck), fly to be careful, 0.05 ~ 0.06 or so will have flash, and easy to Die, if the slider.

5, the strength of the product than the plastic pieces of plastic parts, but with the same pieces of plastic as wall thickness to be uniform, BOSS column flesh more than 1.2MM do not need to add ribs, but the bottom must add R angle, corner also add R angle.