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Investment Casting
water glass
 

Water glass casting

Water glass casting, also known as sodium silicate casting or CO₂ sand casting, is a specialized foundry process that uses sodium silicate (water glass) as a binder to create sand molds. The method involves mixing sand with liquid sodium silicate, then hardening the mold by exposing it to carbon dioxide (CO₂) gas, which triggers a chemical reaction to form a rigid, heat-resistant structure.

 

Silica Sol casting

Silica Sol Casting is a precision investment casting process that uses silica sol (a colloidal suspension of silicon dioxide) as a binder to create high-strength ceramic shells for molds.

Often used alongside or as an upgrade to conventional investment casting for high-performance requirements.

This method is favored for critical, high-value parts where precision and material performance outweigh its higher cost and longer production time.

silica sol
 

 

investment casting

What is investment casting?

 

Investment casting, also known as lost-wax casting, is a precision manufacturing process used to create complex, high-accuracy metal parts. It involves creating a wax or 3D-printed model of the desired part, coating it with multiple layers of heat-resistant ceramic material to form a mold, and then melting away the wax (or dissolving the printed material) to leave a hollow cavity. Molten metal is poured into this cavity, solidifying into the final shape. After cooling, the ceramic shell is broken away to reveal the finished part.

Why we use investment casting?

 

Investment casting is used to produce highly precise, intricate metal parts with excellent surface finish and tight tolerances, often unachievable through other methods. It excels in creating complex geometries (e.g., hollow sections, fine details) without requiring costly machining. The process supports a wide range of metals, including high-performance alloys (e.g., stainless steel, titanium, superalloys), making it ideal for demanding applications like aerospace turbine blades, medical implants, and automotive components. Though slower and more labor-intensive than die casting, it is cost-effective for low-to-medium production volumes of high-value parts, minimizes material waste, and ensures repeatability for critical, custom-designed components.

investment casting
Application Industry 

 

auto parts industry

The automotive industry utilizes investment casting for the production of engine components, transmission parts, and suspension components. Components like cylinder heads, crankshafts, and camshafts can be manufactured with high precision through investment casting, ensuring proper fit and function.

01

Mining industry

Many components of mining machinery, such as drillers, detection equipment, valves, safety equipment, bulldozers, excavators, loaders, crushers, and articulated trucks, can be manufactured by investment casting. Investment casting can produce parts with complex shapes, meeting the specific structural requirements of these mining equipments. 

02

construction industry

Some structural components in buildings can also be manufactured by investment casting. For example, in pre - fabricated building systems, certain connectors and brackets that require high strength and precise dimensions can be produced through investment casting.

03

Tool and Die Industry

The tool and die industry employs investment casting to manufacture dies, molds, and tooling components. Investment - cast dies and molds have high dimensional accuracy and surface quality, which are crucial for producing high - quality plastic and metal parts. 

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our workshop

 
mold stock and tool stock

Mold stock and tool stock

shell tree assemble

Shell tree assemble

cast the steel liquid

Cast the steel liquid