Investment Casting

Investment casting also called lost wax casting is a casting process to coat refractory on the fusible material mould to form shell, melt out the shape and inject the liquid metal, and then the castings will be obtained after cooling.
The moulds are commonly made of wax material. Various alloys also can be produced by using investment casting process, such as carbon steel, alloy steel, heat-resistant alloys, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy and nodular cast iron.

Advantages of Lost Wax Casting
1. The biggest advantage of the investment casting is that it can reduce machining work due to its high dimensional accuracy and surface finish.
2. This casting process can greatly save a lot of machine tools and machining time, and save metal raw materials by a large margin.
3. Investment casting is used to produce shaped or non-symmetrical parts as well as the parts with tight tolerances and thin walls.

Lost Wax Casting Process
In investment casting, a wax pattern of the desired finished part is created and mounted on a wax tree, which includes the metal delivery system. The tree is alternately dipped into ceramic slurry and sprinkled with stucco material, and is allowed to dry. This process is repeated until a thick shell is created over the wax pattern. The wax pattern is melted out leaving a cavity in the shape of the pattern. The molten metal is injected into the cavity. After solidification, the shell is broken away, the gating material removed, and the finished part remains.

Steps for Traditional Investment Casting
1. Users assign casting design blueprints to the foundry
2. Foundry makes a budget and puts forward improvement suggestions from the perspective of conductive to production and cost reduction.
3. The casting factory designs the investment casting process equipment.
4. Foundry issues drawings of lost wax casting to mold workshop.
5. The final step is to pour the castings and inspect the castings.

As a professional investment casting manufacturer and supplier, we has the abilities to provide sand casting, lost wax casting, gravity casting, iron casting, aluminum casting, steel casting, shell mold casting, low-pressure casting and centrifugal casting. Additionally, our casting process products like investment casting are used by many foreign companies, such as STIEBEL in Germany, SPEEDLINE of America, SIDEL in France, SUPER UNION, AVITOOLS and NORDIC of Singapore, HUVITZ of Korea and FERROTEC in Japan.

Related Products
  • Free Forging (Open Die Forging)
  • Free ForgingFree forging, a kind of forging, utilizes impact force or pressure to make metal deformed freely in any direction between the upper and lower anvil face, without any restriction to obtain the desired shape and size as well as a certain mechanical properties. Metal parts are worked above their recrystallization temperatures, ranging from 1900°F to 2400°F for steel, and gradually shaped into...
  • Die Forging
  • Die ForgingDie forging uses dedicated mold to make metal forming. This forging process provides a near shape of the part with a powerful grain structure. Since the basic shape of the part is obtained by pressure, much less material is lost in the forging and secondary machining processes. This closed die forging creates parts that are stronger than castings, but much cheaper than being completely machined ...