Views: 1 Author: Site Editor Publish Time: 2018-05-05 Origin: Site
H2. The floorboard of the precision casting refers to a process, it refers to the use of sophisticated modelling method for precise casting process, a lot of castings can be got through precision casting, such as: hardware accessories, auto parts, motorcycle accessories and all kinds of valves, etc.,
H3. So it's a very important process in industry right now. So, when we do precision casting, we need to be aware of what factors might affect the precision of precision casting size.
H4. First, the structure of the casting is a very important factor. The thicker the wall of general casting, the larger the shrinkage rate, the smaller the contraction ratio.
H5. Second, the material of the casting will also affect the precision casting. The higher the carbon content in the general material, the smaller the shrinkage rate of the line, and the larger the contraction rate of the line.
H6. Third, the casting shrinkage rate also has a great influence on the casting, generally the temperature and pressure of the wax and the time of pressure protection are very large;
H7. Fourth, the shell is also a very important factor, usually used zirconium, zirconium powder, upper store sand, store powder and so on, because their expansion coefficient is very small;
H8. Fifth, the temperature of casting is also very important. The higher the temperature of casting, the greater the shrinkage rate, so it is necessary to control the casting temperature.