The minimum wall thickness for casting varies depending on the material and casting method.
Minimum wall thickness of different materials
Gray cast iron:
The minimum wall thickness of HT100 and HT150 is 4-6mm.
The minimum wall thickness of HT200 is 6-8mm.
The minimum wall thickness of gray cast iron of HT250 and above is 8-15mm.
Cast steel:
Under sand casting conditions, the minimum wall thickness of steel castings is 8mm, and when the casting size is 200×200, the minimum wall thickness is not less than 8mm.
Ductile cast iron:
Under sand casting conditions, the minimum wall thickness of ductile cast iron is 6mm.
Mallet cast iron:
Under sand casting conditions, the minimum wall thickness of malleable cast iron is 3-5mm.
The effect of casting method on minimum wall thickness
Sand casting: It is suitable for casting of various materials. The specific minimum wall thickness varies according to the material type, as mentioned above.
Investment casting: Suitable for the manufacture of precision parts, its minimum wall thickness is usually smaller than sand casting, and the specific value needs to be determined according to the specific material and process requirements.
Metal mold casting: Suitable for mass production, its minimum wall thickness also varies depending on the material and casting size, such as the minimum allowable wall thickness of the casting is 3.5-4.5mm when casting with a metal mold.
Minimum wall thickness selection in practical applications
In practical applications, the following points need to be considered when selecting the minimum wall thickness:
Part size and complexity: Large size and complex parts require thicker wall thickness to avoid casting defects and ensure structural strength.
Use strength requirements: Parts with high strength requirements require thicker wall thickness to withstand higher stress.
Casting process conditions: Different casting process conditions will affect the selection of minimum wall thickness, such as the minimum wall thickness of sand casting and metal mold casting is different.
Of course, the actual casting process will still be combined with customer needs and the best casting effect for casting processing. If you need a large number of customized metal casting parts, you can choose to cooperate with Mulan Metal. Mulan Metal has 12 years of custom metal casting experience, processing orders are exported to more than 30 countries, and it has complete certificates to meet the needs of customers in different countries.
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