
Investment casting, also known as lost-wax casting or precision casting, is an advanced method for producing high-precision, complex-shaped metal parts. Its core principle is "using wax as a mold, which is melted away in a single process," thus obtaining metal castings identical to the wax mold.
Our process advantages
1.Extremely high dimensional accuracy and surface finish. This is its most prominent advantage. Typically, the dimensional tolerance of castings can reach CT4-6 levels (±0.1% - ±0.3%), and the surface roughness can reach Ra 3.2-6.3μm. It can produce parts that are close to the final product shape, greatly reducing subsequent machining.
2.Excellent ability to form complex shapes. It can cast complex internal cavities, thin walls, fine patterns, and three-dimensional curved parts that are difficult or even impossible to achieve with traditional sand casting or machining.
3.Wide range of material adaptability. It can cast almost all meltable metals and alloys, and is particularly suitable for difficult-to-process and difficult-to-cast high-temperature alloys, stainless steel, titanium alloys, etc. This makes it the preferred process for manufacturing high-performance material components.
4.Excellent overall performance. Due to preheating of the mold shell and pouring of molten metal under vacuum or protective atmosphere, and controlled cooling of the casting, the casting has a dense structure, fine grains, and good mechanical properties, especially excellent fatigue resistance and high-temperature performance.
5.Good consistency in mass production. Once the mold and process parameters are determined, it can stably produce castings with highly consistent dimensions and performance in large quantities, making it very suitable for medium to large-scale production.
Our Lost wax investment casting service process
1.Customers need to provide detailed drawings of the parts to be produced.
Note: This includes 3D drawings, three-view drawings, and material specifications.
2.Our mold engineers will design the mold based on the drawings, includingthe design of sprue and riser, mold opening and closing positions, core design, and the number of cavities.
Note: In actual production cooperation, we only charge one mold fee per kind of part, and no further mold-related fees will be charged. We will provide a new mold free of charge after the mold reaches its lifespan.
3.Raw material preparation.
Note: We have high-quality raw material suppliers who provide casting raw materials with qualified and stable composition. We also conduct our own spectral analysis to ensure the material composition is up to standard.
4.Mold debugging and sample production inspection to ensure the mold and parts are up to standard.
Note: We will cast a small number of samples to test the appearance, dimensions, and mechanical properties of the parts to ensure they are up to standard.
5.Mass production of parts.
6.Surface cleaning.
Note: Removal of risers and gates, shot blasting, etc..
7.Further machining.
Note: For parts that require further finishing processes, we will perform the machining according to the specifications indicated in the drawings.
8.Parts quality inspection.
Note: Finished parts undergo random or full inspection to ensure the casting parts meet quality standards.
9.Packaging.
Note: We have a clean packaging workshop that will securely package the finished parts to ensure they are not damaged during transportation.