Investment Casting

Investment casting is a metal casting technique called lost wax casting, in which a wax pattern is used to shape a ceramic mold for creating metal parts. It is also commonly known as precision casting process due to its ability for manufacturing metal components with high accuracy and smooth surface finish.

In the lost wax casting process, a wax pattern is created in accordance with the shape of product and coated with a refractory ceramic material. Subsequently, an expendable ceramic mold is formed when the ceramic material is hardened. After that, molten metal is poured into the empty ceramic mold and then cools until it solidifies into the desired shape.

In today's metalworking industry, investment casting process is becoming more prevalent across many industries thanks for its high versatility. It is capable of producing a variety of complicated shapes that are difficult to be formed by other casting methods. From prototype to more than 10,000 workpieces, investment casting can get the products to be manufactured with premium quality and high efficiency.

Steps of investment casting
The investment casting process falls into several phases, involving metal die construction, wax pattern production, ceramic mold shaping, molten metal pouring, metal solidification, shakeout (unmolding) and cleaning.

Discussed as one of the net shape or near net shape manufacturing technologies, the investment casting can help foundries and metal casting manufacturers obtain lower cost in material, labor and machining. The most commonly used metals for investment castings are stainless steel, alloy steel, aluminum, bronze, magnesium, carbon steel, brass, etc. And typical investment castings include turbine blades, marine parts, gears, and many other industrial parts with complex geometries.

Benefits of investment casting

Dimensional accuracy
Less machining required
Minimized material waste
Reduced manufacturing cost
Shorter lead time than machining
Able to accommodate simple or complex designs
Fast assembly time
Wide range of applicable metals

Casting workshop
Our factory is equipped with 5ton electric furnaces, 50kg electric furnaces, sandblasting equipment, heat treatment equipment and others.

Investment casting can solve your following needs

• Making complex-shaped parts requiring tighter dimensional tolerances;
• Shaping intricate or non-symmetrical parts;
• Production of castings with complex internal passageways;
• Having excellent surface finish;
• Adapting to thin-wall designs;

Investment casting materials we mainly offer

Stainless steel casting
Alloy steel casting
Aluminum casting
Carbon steel casting
Brass casting
Bronze casting
Cobalt casting
Tool steel casting

Investment castings

In addition to investment casting, Hongyan Hang also offers other services including precision machining, sand casting, die casting and 3D printing to meet customers' needs of precise parts manufacturing and prototyping. Our capabilities help our customers reduce costs, increase efficiency, save valuable resources and gain the visibility into its supply chain, as well as ensure the quality and reliability of products.