No-bake resin sand casting
No-bake resin sand molding is a sand molding process where synthetic liquid resin is mixed with the sand, and the mixture hardens and cools at room temperature. The casting is formed by pouring liquid metal into the resulting mold cavity after the sand mixture is fully cured and the mold halves are assembled together. This process takes place in a normal atmosphere without adding heat to the mold prior to the pour.
Select the casting process
We select the appropriate casting process according to customer’s 2D and 3D drawing, drawing should show the unit weight, material grade number, size, tolerance and standard and order quantity. Use appropriate casting solidification simulation software and design reasonable casting process to ensure that castings that meet customer quality requirements are obtained.
Casting molds design
We select appropriate mold materials and mold making methods according to the specific casting process and casting quality requirements, make the mold according to the designed casting process to ensure the mold quality and dimensional tolerance grade requirements.
Molding and core making
Produce samples according to the selected modeling and core making methods. Produce qualified casting molds and sand cores. Assembly them carefully to ensure that the appearance quality and dimensional tolerance of the castings, so must meet customer requirements.
Melting and pouring
When the customer has clear requirements on the chemical composition of the casting, we will strictly control it according to the customer’s requirements. If the customer has no clear requirements on the chemical composition of the casting, we will determine the chemical composition control range of the molten metal and various production process parameters such as the pouring temperature according to our professional experience to ensure that the casting material meets the customer’s requirements.
Cleaning and inspection
Remove the excess materials such as the gate, riser and seam of the trial sample, and carefully grind and shot blast. Then the trial sample is inspected for appearance quality, size, body hardness and other material properties. If there is a non-destructive testing grade requirement for the internal quality of the casting, the sample is also required to undergo non-destructive testing and body anatomical inspection. Once the sample meets the customer’s quality requirements, it can be transferred to small batch production.
