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2022
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06
Main sections of a foundry
Foundry molding technology equipment is the main equipment including the molding department. The number of molding process equipment depends on the foundry's production development plan and the productivity of the molding equipment. According to the degree of mechanization, the modeling department can be divided into two categories: manual modeling department or simple mechanized modeling department, mechanized modeling department or automated modeling department.
Main workshops of the foundry
I. Foundry Molding Workshop
The molding technology equipment in the foundry is the main equipment of the molding department. The number of molding process equipment depends on the production plan of the foundry and the productivity of the molding equipment. According to the degree of mechanization, the modeling department can be divided into two categories: manual modeling department or simple mechanized modeling department, mechanized modeling department or automated modeling department. At present, mechanized or automated modeling departments are more used in the production of industrial castings, and there are also some manual or simple mechanized modeling departments in China. According to the selection of casting conveyors, molding production lines can be divided into two types: closed and open. A closed molding production line consists of a continuous or pulsating mold conveyor, and an open molding production line consists of an intermittent mold conveyor.
II. Foundry Core Making Workshop
Due to the different binders used, the properties of the core sand (fluidity, hardening speed, strength, air permeability, etc.) are different, and the core manufacturing methods and equipment are also different. According to the hardening characteristics of the binder, there are several main core making processes.
1. The process of making cores with clay sand, oil sand, synthetic resin sand, etc. is that the core is formed in the core box, taken out of the core box, and then placed in an oven to dry.
2. The hot core box and shell core process is core forming, which completes heating and hardening in the core box. The water glass CO2 method, gas atomization cold core box method and other core making processes form the core in the core box and introduce gas to harden the core.
3. The self-hardening cold core box method and the liquid self-hardening sand method are the processes of forming core blocks in the core box and self-hardening at room temperature until the shape of the core block reaches a stable state.
In the core manufacturing department, the core making machine is the core equipment, and the selection and quantity of the core making machine should be determined according to the production program and production requirements. In modern foundry production, the hot core box method (or shell core method) and the gas atomization cold core box method are widely used.
III. Foundry Sand Treatment Workshop
The sand processing department has many raw material varieties, large consumption, large transportation workload, complex management and scheduling problems, a lot of dust, and poor labor conditions. Therefore, the transportation management methods of molding (core) sand in the sand treatment workshop are generally mechanized, the transportation distance can be as short as possible, and ventilation and dust removal measures are strengthened.
IV. Foundry Melting Workshop
The melting department is responsible for providing qualified casting liquid metal. According to the different types of melting alloys, melting machines can be divided into cast steel, cast iron, and cast non-ferrous metals. Cupola is the main melting method for cast iron, electric furnace and electric arc furnace are the main melting methods for cast steel, and resistance furnace is the main melting method for cast non-ferrous metals. The melting process of each alloy has its own characteristics, but the layout of the melting process has many similarities.
V. Foundry Cleaning Workshop
The equipment used for cleaning in the foundry should be selected according to the type, size, shape, quality, and complexity of the casting alloy. Different types of castings should be cleaned with different models of casting cleaning equipment.
Due to the high labor intensity of cleaning in the foundry, serious noise and dust hazards, and harsh working conditions. Therefore, the cleaning department should strengthen sound insulation, dust prevention and other environmental protection measures.
Foundry
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Shandong Gongchen Machinery Technology Co., Ltd.
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Phone:0536-7691368 7691229
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Address: Mucun Town, Fangzi District, Weifang City, Shandong Province
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