China Investment Casting Foundry
Simis Investment Casting Foundry
Investment Casting Factory Overview:
SIMIS Precision Investment Casting (Lost wax casting) Factory specializes in the production of high-precision, complex-shaped metal castings, especially in the fields of industrial machinery, automobiles, energy and chemicals. SIMIS Precision Casting Factory covers an area of about 13,000 square meters, with an annual output of 900 to 1,500 tons. It is equipped with multiple production workshops and facilities, focusing on the refined operation of each casting process. The factory area has wax model making workshop, coating workshop, wax melting area, casting area, cooling and cleaning workshop and quality inspection laboratory. Each workshop is equipped with professional equipment to ensure the efficiency and accuracy of the casting production process.
SIMIS Investment Casting (Lost wax casting) Factory has advanced investment casting production equipment, such as: fully automatic wax injection machine, fully automatic coating system, wax melting equipment, medium frequency induction furnace, automatic cleaning equipment, etc. SIMIS Investment Casting Foundry has realized the automation of some processes such as wax model making, coating, dewaxing, casting, etc., which improves production efficiency and product consistency.
Investment Casting Process
Investment Casting Process Overview
Investment casting (also known as lost wax casting) is a high-precision casting process with very high casting accuracy and surface quality. It is particularly suitable for producing castings with complex shapes, precise dimensions, thin walls, high strength, and high surface quality requirements. Through multiple processes such as precise wax pattern making, coating, dewaxing, metal pouring, cleaning and trimming, investment casting can produce castings that meet the high requirements of industrial machinery, automobiles, energy and other industries.
1. Wax Pattern Making
2. Wax Assembly
Fix multiple wax patterns (single parts) to the wax runner system to form a tree-like structure, called a "wax tree".
3. Shell Making
Immerse the wax pattern in refractory ceramic slurry and evenly coat its surface with the slurry. Coat the surface of the wax pattern with a ceramic layer (usually 5 to 7 times) to form a refractory shell to withstand the high temperature and pressure during metal casting.
4. Dewaxing
Put the prepared ceramic shell into a high-temperature steam kettle or barbecue oven and heat it to 100~200℃ to melt the wax inside and form a cavity.
5. Shell Firing
Put the dewaxed ceramic shell into a high-temperature furnace (800~1000℃) for sintering to improve its mechanical strength and refractory properties and remove residual wax and moisture.
6. Metal Pouring
Heat the metal to melting temperature (such as stainless steel about 1600℃). Pour the molten metal into the preheated ceramic mold to fill the cavity and form a casting.
7. Knockout & Cleaning
After cooling, knock off the ceramic mold. Vibration, mechanical impact or chemical dissolution can be used to remove residual ceramic.
8. Heat Treatment
According to material requirements, anneal, quench, temper or solution treatment are performed on the casting to improve mechanical properties and corrosion resistance.
9. Machining
Precision machining such as turning, milling, drilling or tapping is performed according to requirements to achieve final dimensional accuracy.
10. Surface Treatment
Perform surface treatment such as electroplating, oxidation or painting as required to improve the appearance and corrosion resistance.
Materials For Investment Casting
What metal parts can be cast in Simis Investment Casting Factory？
SIMIS investment casting factory can cast parts of different metal materials. Common materials for investment casting include alloy steel, carbon steel, stainless steel, aluminum alloy, copper alloy, etc. Parts can be customized for different industries according to different materials, including automotive drive shaft brackets, steering knuckles, suspension system parts, blades, nozzles, various precision parts, etc.
1. Steel
l Carbon steel:
Mild Steel, Medium Carbon Steel, High Carbon Steel,
l Alloy steel:
Low Alloy steel, High Alloy Steel,
l Stainless steel:
Austenitic Stainless Steel, Ferritic Stainless Steel, Martensitic Stainless Steel, Duplex Stainless Steel, ...
2. Aluminum
l Aluminum-Silicon Alloys
l Aluminum-Magnesium Alloys
l Aluminum-Zinc Alloys
l Aluminum-Copper Alloys
l Aluminum-Manganese Alloys
l Aluminum-Titanium Alloys
l …
3. Other alloys
l Brass
l Bronze
l Nickel Alloys
l Titanium Alloys
l …
