1. The injection pressure of the die-casting molds is large, so the template is required to be relatively thick to prevent deformation. 2. The gate of the die-casting molds is different from that of the injection molds, and it needs to do a high pressure of the split cone to decompose the flow.
The problem encountered now is that the aluminum die casting has a lot of oil stains, and the surface is required to be cleaned and whitened.
Metals used for die casting mainly include zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys, although die cast iron is rare, but feasible.
1. The advantages of die casting include that the casting has excellent dimensional accuracy.2. The biggest disadvantage of die casting is the high cost.
In 1838, in order to make molds for movable type printing, people invented die-casting equipment.
1. Cold partition Features: The gaps that appear when the metal flows with lower temperature butt but are not fused are irregular linear, there are two kinds of penetrating and non-penetrating, and there is a development trend under the action of external force.