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1.Shanghai Meihong Machinery Manufacturing Co., Ltd.is a investment casting,casting partsin one large multi-functional integrated modern enterprise,and devote the high-quality sand casting and first-class service for the masses of customers.
2.Shanghai Meihong Machinery Manufacturing Co., Ltd. is specialized in Industry and agriculture,Machinery and industry equipment,Casting processing since established in 10 years ago.So far,our company has established its branch companies in major cities throughout the country.Formed in Rm.503, 1st Building , Wisdom Bay, Rd 6 Yunchuan,Baoshan District,City area,Shanghai,China as the center, the radiation sales system and service network.Details:The process flow of lost wax casting is: pressing plastic mold - open plastic mold - wax injection (mold) - dressing wax mold (welding wax mold) - wax tree (- weighing) - plastering pot - Gypsum vacuum - gypsum natural solidification - baking gypsum - melting gold, casting - fried gypsum - washing, pickling, cleaning (- weighing) - shearing blank (-rolling).The process of lost wax casting is: the original mold (usually silver plate) is surrounded by raw silica gel, vulcanized by heating and pressing, and pressed into a silica gel mold; after cutting the plastic mold in a certain order with a sharp blade, the silver plate is taken out. Obtaining a hollow rubber mold; injecting wax into the hollow plastic mold, and after the liquid wax is solidified, the mold is opened to take out the wax mold; after the wax mold is trimmed, the wax mold is planted in a certain arrangement, and the steel sleeve is placed in a steel sleeve. The high-temperature gypsum slurry is poured; the gypsum is vacuumed, naturally hardened, dried after a certain heating period, and the molten metal is cast (can be cast by the principle of positive pressure or negative pressure); after the metal is cooled, the plaster mold is placed in cold water to be fried. After washing, the castings are taken out, soaked in acid, cleaned, and the blanks are cut to be rolled; after the mold is applied and inlaid, the surface treatment is finished. The positive pressure and negative pressure casting mentioned above refers to the pressure state inside the casting mold during the casting process. Positive pressure casting is represented by centrifugal casting. During the casting process, when the molten metal enters the mold, the pressure in the mold is atmospheric pressure. In order for the liquid metal to enter the mold, the metal must overcome the atmospheric pressure. Centrifugal casting is the liquid metal. The crucible and the mold are mounted on a high-speed rotating disc, and the liquid metal flows at a high speed in the normal direction (radial direction) of the disc by the action of centrifugal force, thereby generating an injection action into the mold-that is, during the "positive pressure casting" process. At the moment when the molten metal enters the cavity of the mold, the internal pressure of the mold is greater than the external pressure of the mold, and the difference between the two is greater than 0, so it is called "positive pressure casting"; "negative pressure casting" is typical by vacuum suction casting, during the casting process. When the molten metal enters the mold, the pressure inside the mold is less than the external pressure of the mold, and the difference between the two is less than 0, so it is called "negative pressure casting" - of course, the negative pressure in the mold must be completed by a vacuum pump connected to the mold. Liquid metal naturally enters the mold under the action of atmospheric pressure.
3.Adhering to the Sincere service, the pursuit of perfection,To be sincere and trustworthy, together into a forest,Sincere service, customer first,Quality first, integrity and pragmatic,Integrity first, quality-oriented,Customer first, forge ahead,The customer is God spirit of enterprise, Meihong Machinery bases on long-term development, technology as the core, market-oriented, and constantly open up new areas, undertaking to provide fast, high-quality service for the vast numbers of users. For further information about Meihong Machineryaluminum castingx2fc7be8n, please visit our official website: www.matechin.com.
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Last Update : Nov 22, 2018
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