As can be seen from the first picture, the surface quality of this product is not good, there are obvious air lines in a large area, and the corners of the product are still not full. Based on this, it is inferred that there is something wrong with the product flow channel.
From the second picture, the exhaust design of the mold is a failure.
In addition, thimble marks appeared on the surface of the product, and according to the industry rules of such products, thimble should not be placed on the surface of the product.
As can be seen from the third picture, the deformation and flatness of the product can not be achieved, which should be related to the absence of reinforcing grooves on the mold.
Judging from the calipers you are still using, the customer's requirements for this product are not too high. He is really a generous guest.
After the product leaves the mold, it is scraped and scraped, and then the hole is processed by numerical control. The clamping of the numerical control fixture should be designed to prevent deformation.
Then design a set of shaping die to correct flatness.
Packaging means that products should be placed vertically and separated by paper partitions to prevent secondary deformation.
In fact, there is no gap between China's die casting design and technology and foreign countries. Many die-casting dies are exported from Shenzhen, Guangdong every year.
The products you provide are located in Shiyan, Gong Ming and Shajing. As far as I know, at least 20 companies produce similar products.
From the design style, the products you provide are samples produced by a company in Shiyan Town, Shenzhen. This company used to focus on zinc alloys, but aluminum alloys were not involved. The magnesium alloy project started at the beginning of 20 12. I have been to the factory to learn from their engineering department.
I have been engaged in die-casting mold design, die-casting product development and on-site product mold improvement 16 years.