The requirement of wall thickness for high chromium white iron castings is of special significance in the die casting process, mainly because its wall thickness is closely related to the whole process specification, such as the choice of the speed of the inner gate, the length of the die retention time, Analysis of die temperature gradient and calculation of time.
If the wall thickness of high chromium white iron castings is too thick, the mechanical properties of the casting machine will be obviously decreased to a certain extent, and the compactness of its thin wall castings will be good, and the strength and pressure resistance of high chromium white iron castings will be improved relatively.
The wall thickness of high chromium white iron castings should not be too thin, mainly because too thin will lead to poor filling of molten aluminum, so we should reduce the wall thickness of castings and keep the thickness of sections uniform and even while ensuring that the castings have sufficient strength and rigidity. In order to avoid shrinkage, the thickness of the thick wall of the casting should be reduced (reducing the material and increasing the reinforcement, and for the large-area plate thick wall castings, the reinforcement should be set up to reduce the wall thickness of the castings.
Requirements for slope of high chromium white iron castings
The effect of slope is to reduce the friction between the casting and the die cavity, to remove the casting easily, to ensure that the casting surface is not strained, and to prolong the service life of the die casting die.
Design requirements of High Chromium White Iron Castings
1. The requirements of casting for the shape and structure of parts.
2. Technological properties of castings.
3. Dimensional accuracy and surface requirements of castings.
4. The part design of casting is an important part of die casting production technology. The selection of parting surface of die, the opening of gate, the selection of position of top rod, the shrinkage of casting and the guarantee of dimensional precision of casting must be taken into account in the design of casting. The prevention of internal defects of castings, the requirements of casting holes, the requirements of shrinkage deformation and the size of machining allowance, etc.http://www.wuxiorient.com/