The casting process for producing cast steel parts is advantageous due to its wide range of material applications, enabling the manufacture of various precision cast steel parts, as well as castings from aluminum alloys, ferroalloys, and copper alloys. For brittle alloys with poor plasticity, such as ordinary cast iron, casting is the only viable forming process. Cast steel parts possess a certain dimensional accuracy, generally exceeding that of ordinary forgings and welded parts. Furthermore, the production cost of cast steel parts is low, offering excellent overall economic performance, and its energy and material consumption and production costs are unmatched by other metal forming methods.
Steel castings have high melting points, resulting in correspondingly high pouring temperatures. At high temperatures, the interaction between molten steel and the mold material makes sand adhesion defects very easy to occur. Therefore, artificially produced silica sand with high refractoriness should be used for the mold, and a coating made of silica powder or zircon sand powder should be applied to the mold surface. To significantly reduce gas sources, improve the fluidity of molten steel, and enhance mold strength, most steel castings are produced using dry or fast-drying molds, such as CO2-hardened water glass sand molds.
Cast steel parts typically account for 40% to 80% of the total mass of mechanical equipment, while their manufacturing cost accounts for only 25% to 30% of the total equipment cost. For brittle alloy materials with poor plasticity, such as ordinary cast iron, casting is the only feasible forming process. Cast steel parts have a certain dimensional accuracy, which is generally more precise than that of ordinary forgings and welded parts.
The flowchart illustrates the manufacturing sequence, and the key control points determine the final stability.
Precision casting is not simply a matter of following steps. Molds, wax patterns, shells, melting and pouring, cleaning, heat treatment, and post-processing all influence each other and require control based on the requirements of the part.
First, confirm the material, structure, wall thickness, machining allowance, quantity, and inspection requirements.
Pay attention to wax pattern dimensions, shell strength, smelting composition, pouring conditions, and shrinkage compensation.
Cleaning, heat treatment, surface treatment, and CNC machining are arranged according to material and part requirements.
Inspect materials, appearance, key dimensions, and packaging markings as agreed, and retain necessary records.
Relevant technical information and product examples
Continue to assess whether the materials, workmanship, and actual parts are suitable for your procurement needs.
- Process ComparisonHow to choose between silica sol process and water glass process?→
- Process ComparisonWhat are the differences between precision casting and powder metallurgy?→
- Quality requirementsPrecision casting surface roughness and polishing treatment→
- Product ExamplesCNC machining of industrial and mechanical parts casting→
Manufacturing process evaluation
We need to determine which manufacturing process is suitable for this part.
Please provide the structure, material, quantity, key dimensions, and surface requirements. We will conduct an evaluation based on precision casting, post-processing, CNC machining, and inspection.
- Assess wall thickness, fillet radius, and molding risks.
- Confirm casting allowance and post-machining location
- Select process based on quantity, quality and delivery time.
WhatsApp: +86 158 9600 2001Scan the QR code or open WhatsApp to chat
