Our process advantages:

1.High dimensional accuracy of castings: The resin-coated sand mold undergoes almost no deformation after demolding, accurately replicating the mold cavity. Casting dimensional tolerances can reach CT7-9 grades, superior to ordinary sand casting.

2.Good surface finish of castings: The sand mold surface is dense and smooth, resulting in a casting surface roughness of Ra 12.5-25μm, good appearance quality, and reduced subsequent cleaning work.

3.Stable internal quality of castings: The high-strength sand mold resists metal liquid erosion and static pressure, reducing defects such as sand expansion and sand erosion, resulting in clear casting contours.

4.Ability to produce complex castings: Particularly suitable for castings with complex internal cavities, thin walls (as thin as 3mm), fine grooves, and protrusions. The high precision of resin-coated sand core making allows for the creation of complex cavities.

Our shell mold gravity 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.