The distance between the two holes or between holes with outer edge should be twice the thickness of a product or two times the size of the largest measured the circumference of the hole.When the middle of the holes are too small or complex affecting the casting process can change design for better fit.So the design to the direction of the vertical flow down under the hole to avoid welding line. If the welding line at levels unacceptable should notdesign hole that will drill holes to the product after the injection. Inside the hole should smooth balls to increase the ability to fill out.
đang được dịch, vui lòng đợi..