The Simons Technology team, with extensive casting experience, shares our casting design principles.
Before initiating casting process design, engineers must not only understand the component's structural characteristics, technical specifications, and production requirements but also be thoroughly familiar with the manufacturing conditions of the enterprise. These factors serve as the starting point and fundamental basis for casting process design. Furthermore, designers are expected to possess relevant production and design experience, be knowledgeable about advanced casting technologies, and maintain an economic and forward-thinking perspective to successfully accomplish the design task. Casting process design requires comprehensive consideration of the following four key aspects:
(1) Castability of the Component Structure
First, the component design must be reviewed for compliance with casting process requirements. If structural modifications are deemed necessary, discussions must be held with the original design unit or the client. Revisions proceed only upon mutual agreement, and the modified drawings then serve as the design basis. At this stage, the analysis focuses on the structural castability from the perspectives of both casting quality and process operability, covering aspects such as wall thickness, geometry, complexity, and the casting properties of the material.
(2) Component Technical Specifications
These typically include material grade, microstructure, mechanical properties, dimensional accuracy, surface roughness, internal quality requirements, as well as any special performance criteria. Examples involve pressure testing (hydraulic/pneumatic) requirements and the intended service conditions of the component.
(3) Production Volume and Timeline
Casting production can be categorized into three types: mass production, batch production, and single-piece production. The product quantity is a crucial factor in process design. Mass production should utilize dedicated equipment and tooling where possible; batch production typically employs general-purpose equipment; and single-piece production should use the simplest possible tooling to shorten the cycle time and maximize economic benefit.
The timeline encompasses both the production preparation period (covering process equipment design and manufacturing) and the casting production cycle. The production cycle itself depends primarily on the casting method, component complexity, quality requirements, and existing production conditions. Generally, sand casting requires a shorter preparation period compared to pressure die casting or permanent mold casting. Complex components with high-quality demands typically entail longer preparation and production cycles.
