CNC turning and milling composite processing
1.Preparation The CNC turning and milling composite ...
There Are Professional Sand Casting Papers Published On This Site
There are two types of casting powder: sand casting and special casting. After talking about aluminum sand casting, we will talk about special casting. Special casting: According to the modeling material, it can be divided into special casting with natural mineral sand and gravel as the main modeling material (such as investment casting, mud casting, shell casting, negative pressure casting, solid casting, ceramic casting, etc.) and There are two types of special casting (such as metal mold casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.) with metal as the main casting material.
Dewaxing casting method-this method can be outer film casting method and solid casting method. Copy the object to be cast with wax first, then immerse it in a pool containing ceramic (or silica sol) and wait to dry, so that the wax replica is covered with a ceramic outer film, and the steps are repeated until the outer film is sufficient to support the casting Process (about 1/4 inch to 1/8 inch), then melt the wax in the mold and pull out of the mold. After that, the mold needs to be heated many times to increase the hardness before it can be used for casting. This method has good accuracy and can be used for casting of high melting point metals (such as titanium). However, due to the high price of ceramics, and the need for multiple heating and complicated production, the cost is quite expensive.
Metal mold casting method-use metal with a higher melting point than the raw material to make a mold. Among them, it is subdivided into gravity casting method, low pressure casting method and high pressure casting method. Subject to the melting point of the mold, the metal that can be cast is also limited.Jason Response