Lost Wax Steel Casting

Lost Wax Casting is one of the main technologies used for investment castings. The main process of lost wax casting is: die designing – die production – wax pattern injection -- tree assembly -- shell making – dewaxing -- shell roasting -pouring – cleaning -- heat treatment – machining – inspection -- packaging.
Advantages of lost wax castings:
1. Accuracy: dimensional tolerance between CT5 & CT7, roughness Ra2.5~6.3μm, product weight ranges from 10g to 80kg;
2. There is nearly no limit on the product construction, we could manufacture lost wax castings with a minimum wall thickness at 0.5mm;
3. With lost wax casting, we can use wide range of materials including, carbon steel, stainless steel, alloy steel, aluminum, copper, superalloy and so on.
4. Lost wax technology is widely used for the industries such as auto industry, construction equipment, aerospace, marine, medical equipment, power plant and so on.

Classification of lost wax casting:
1. Sodium silicate casting: medium level surface roughness, low dimension accuracy with short shell making cycle. The hardening technique is chemical process. Normally most of Carbon Steel Investment Casting and alloy Steel investment casting are made by this kind of lost wax casting process.
2. Silica sol casting: premium roughness, high dimension accuracy with high material costs and long shell making time. The hardening process of shell is a natural process under certain temperature and humidity. Normally stainless steel investment castings are made by this kind of lost wax casting process.

We have been working on lost wax casting production for one of the leading manufacturers for scaffolding in Germany, with many years’ experience, we have the leading production technology and best quality controls:
1. Automatic wax pattern injection machine.
2. Automatic dipping line for shell making.
3. Automatic grinding machines for inner feeders.
4. 100% control on each batch of material for chemical composition and mechanical properties;
5. 100% go/no-go checks on key dimension.