Metal casting Manufacturer
If you are looking for a reliable metal casting manufacturer in China, you come to right place.We are located in Ningbo, where is well know for castings industry.There are thousand of factory and foudry small or big for all kinds of casting items.
We committed to provide customer one-stop services for their new project,which help customer to save their time and money.Through many years efforts,we have enriched our production range of castings and have smooth and close contact with our subsidiary factory.
About casting technology
There are mainly two kinds of castings.
Sand Mold casting
In general sand casting, sand is used as the mold material, also known as sand casting, sand turning, including wet sand, dry sand and chemical hardening sand. However, not all sand can be used for casting. The advantage is that the cost is low, because the sand used in the mold can be reused; the disadvantage is that the production of the mold is time-consuming, the mold can not be reused, and the finished product can only be obtained after damage.
1.1 sand mold (core) casting method: wet mold sand mold, resin self hardening sand mold, water glass sand mold, dry mold and surface dry mold, solid mold casting, negative pressure mold.
1.2 manufacturing method of sand core: it is selected according to the size, shape, production batch and specific production conditions of sand core. In production, it can be divided into manual core making and machine core making.
Special casting can be divided into two types according to the molding materials.
-Special casting with natural mineral sand as the main molding materials (such as investment casting, mud casting, shell casting, negative pressure casting, solid casting, ceramic casting, etc.)
-Special casting with metal as the main molding materials (such as metal casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.)
2.1 metal mold casting
The mould is made of metal with higher melting point than raw material. It is divided into gravity casting, low pressure die casting and high pressure casting.
The metals that can be cast are also limited by the melting point of the mold.
2.2 dewaxing casting method
This method can be used for outer film casting and solid casting.
Firstly, the wax is used to copy the casting objects.And then the wax is immersed in the pool containing the ceramic (or silica sol) and allowed to dry. So that the wax replica is covered with a ceramic outer film, and the steps are repeated until the outer film is enough to support the casting process (about 1 / 4 inch to 1 / 8 inch)
Then the wax in the mold is melted and the mold is removed. After that, the mold needs to be high temperature for many times to enhance the hardness before it can be used for casting.
This method has good accuracy and can be used for casting high melting point metals such as titanium. However, due to the high price of ceramics, and the need for multiple heating and complex production, the cost is quite expensive.
Your custom metal casting supplier
If you have any inquiry for metal casting parts,please send us drawing in 2D or 3D or samples.We will try our best to reply and quote you within 24 hours.
Besides of full range of casting ability, we also regards the quality is top important element for manufacturer.We have our many advance inspection equipment for many quality testing from the material to final products,such as spectrometer, tensile test machine, hardness test machine,CMM dimension report and so on.
Not only prices and quality, it’s very convinience for delivery from our place.for small order, we can ship by express,such as TNT, Fedex,DHL,and so on, for big order ,we mainly ship by Sea.We ship from Ningbo port or Shanghai port .Both of them is very famous and big sea port in China.