In die casting, it possible to produce pieces that are precisely the same in extremely high volumes. Here, molten metal is injected into the die cavity under high pressure. Since dies can be used many times over, casts are always just about the same.
In the metallurgical process, it is possible to select different types of alloys, depending upon how they are used. Its toughest part is designing a product. The requirements are often not just mechanical; how the finished casting look is also extremely important. At times, they require extremely thin walls, ribs, or bosses.
There are different methods to achieve this, with each one necessitating a particular kind of draft angle. The draft angle is what makes it possible for a piece or part to be ejected once it has been cast. In case the die-cast piece has not been designed properly, then the whole metallurgical process can go wrong. To prevent such occurrences, die casters and designers mutually take into account numerous things in the design phase or process. They are as follows.
Draft Angle
It is the slope found on the die’s walls. By looking at the way in which the die and sliding cores open, the angle can be identified. This way, a cast can come out of the die easily. This angle is hugely significant because it makes it possible for it to slide out of the die rather than stick to slides, thus making the process even more efficient and the casting of high quality.
Uniform Wall Thickness
The wall thickness should be fully consistent. In case the thickness or geometry changes suddenly, it will disrupt the flow of molten metal into the die. Consequently, air can come into the metal, and its surface finish will be extremely poor. Then again, making sure the draft angle is calculated properly will avoid these issues.
Parting Line
Any component created in a die cast will have a parting line, which is where two halves of the die meet. It is always suggested on the drawing of the component, to be subjected to the process. Dimensions of it with critical tolerance has to always relate to one of the specific sides of the die. The two sides are ‘ejector’ and ‘cover’.
The critical tolerance is tough to control on the line itself. Besides, the line must not be the sight of a specific feature of the part, as it will not necessarily look aesthetically pleasing. Calculating the draft angle will make it more or less visible.