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                Gravity Casting Process and Production Efficiency

                2020-03-28 11:32:28

                Gravity casting refers to the process of pouring molten metal into a mold under the action of the gravity of the earth, also known as gravity casting. In the broad sense, gravity casting includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc .; narrow gravity casting mainly refers to metal casting. Metal mold casting is a modern process for making hollow molds for casting with heat-resistant alloy steel.

                Gravity Casting Process

                Metal molds can be cast by gravity or pressure. The metal mold can be used repeatedly for many times. Every time the metal liquid is poured, a casting is obtained. The life is very long and the production efficiency is very high. Metal molds not only have good dimensional accuracy and smooth surface, but also have higher strength than sand molds when the same metal liquid is poured, and they are not easily damaged. Therefore, in the mass production of non-ferrous metal small and medium castings, as long as the melting point of the casting material is not too high, metal casting is generally preferred.

                Metal Casting

                Metal casting also has some disadvantages: because heat-resistant alloy steel and the processing of hollow cavities on it are relatively expensive, the cost of metal molds is high, but the overall cost is much cheaper than the cost of die casting molds. . For small batch production, the cost of the mold allocated to each product is obviously too high and generally not easy to accept. And because the metal mold is limited by the size of the mold material and the capabilities of the cavity processing equipment and casting equipment, it can not help the particularly large castings. Therefore, in the production of small batches and large pieces, metal casting is rarely used.

                Gravity Die Casting

                In addition, although the metal mold uses heat-resistant alloy steel, its heat resistance is still limited. It is generally used for the casting of aluminum alloys, zinc alloys, and magnesium alloys. It has been less used in copper alloy castings and is used for ferrous metal castings. Even less. In the process of aluminum alloy gravity casting, the raw material aluminum alloy has high density and good toughness, and has good wear resistance and heat treatment during use. Aluminum alloy gravity casting can effectively improve the strength of its products after heat treatment. . Aluminum alloy gravity castings have good compactness and can be cast to a certain extent. The temperature and cooling temperature of the casting need to be appropriate. This can reduce pores and burrs and cracks to a certain extent, and reduce machining.

                Permanent Mold Casting

                Aluminum alloy gravity casting has fewer casting processes, which can effectively reduce its production cost to a certain extent during use. The product is safe and environmentally friendly during the production process. The great advantage of the product during use is that The mold can be used repeatedly.


                ZheJiang Dongrun Casting Industry Co,.Ltd was built in 1995, We have been in the casting industry for more than 25 years. No matter what type of molding you need done, we are the right supplier for your jobs. Unlike other of our competition, we offer four types of castings.
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                        ?Sand casting

                        ?Gravity Die Casting

                        ?High pressure Die casting

                        ?Low pressure casting


                Dongrun Casting have 20000 square meters facility houses and 200 production & test equipment, From quotation and tooling design to casting and finished machining, we  can work with you at every stage. We serves wide range of industries-from Fortune 500 corporations to small and midsize OEMs. Our products includes:

                      ?   Automotive&Trucking

                      ?   Utilities Industry

                      ?   Metering System

                      ?   HVAC

                        ?   Medical Device

                        ?   Electrical Lighting

                        ?   Architectural parts

                        ?   Furniture parts

                Browse our online showroom to see what we can do for you. And then E-mail:dongrun@dongruncasting.com us your specifications or inquiries today




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