Metal smelting

Metal smelting

  In recent years, the country has paid more and more attention to green manufacturing and intelligent manufacturing, and the smelting manufacturing industry has followed the pace of the country and carried out in-depth reforms. Among them, medium frequency induction electric furnace smelting has the advantages of high quality, high efficiency, stability, environmental protection and controllable composition, and has now become a smelting equipment commonly used by foundry enterprises in my country. Based on real cases, this article explains the advantages of the intermediate frequency induction furnace in the smelting process and different application requirements corresponding to different smelting schemes.

  Smelting is an important process in the casting production process. The energy consumption used for smelting accounts for about 50% of the energy consumption of the entire casting production. Medium frequency induction electric furnace smelting has the following obvious characteristics: flexibility, high efficiency, high quality, stability, environmental protection, and controllability. It has been widely used in casting production. . Therefore, induction heating smelting has incomparable advantages in certain fields.

working principle

  The large current generated by the device flows to a heating coil (usually made of copper tube) that is wound into a ring or other shape. As a result, a strong magnetic beam with an instantaneous change in polarity is generated in the coil. When the heated object such as metal is placed in the coil, the magnetic beam will penetrate the entire heated object, and the inside of the heated object will be generated in the opposite direction to the heating current. Correspondingly, very large eddy currents. Due to the resistance in the heated object, a lot of Joule heat will be generated and the temperature of the object will rise rapidly. To achieve the purpose of heating all metal materials.

Practical application

  Case: A large copper gong production base in Northwestern District, according to customer requirements, needs to have the following characteristics: reduce the content of oxidation and impurities to ensure the sound quality of the produced musical instruments, energy conservation and environmental protection, meet environmental protection emission standards, reduce the work intensity of workers, and product consistency requirements high. According to the demand, the customer purchases the equipment of our company model DIH-60 (Figure 1), using pure graphite crucible, the melting capacity is 5-10KG, and the heating temperature is 1150℃ to reach the boiling state and then directly pouring to reduce oxidation. Processing, the products produced by this process fully meet the needs of customers, the scene picture is shown in Figure 2.

Figure 1 Equipment Picture

Figure 2 Smelting site

Figure 3 (parameter table)

Figure 4 Equipment photos

Professional technology

  The equipment of our company combines the mechanism and working principle of a new type of IGBT induction heating power supply. This type of power supply adopts mature frequency conversion technology, and a series resonant inverter circuit is formed by fully controlled devices, which solves the problem of poor power frequency heating effect and high energy consumption. Entrusted, it has the advantages of small frequency change and wide power adjustment range, and is widely used in small and medium power systems.

Features

(1) High melting efficiency, good power saving effect, compact structure and strong overload capacity

(2) Low temperature around the furnace, less smoke and dust, and good working environment.

(3) The operation process is simple and the smelting operation is reliable.

(4) The metal composition is uniform.

(5) The melting temperature is fast, the furnace temperature is easy to control, and the production efficiency is high.

(6) The furnace utilization rate is high, and it is convenient to change the varieties.

(7) The long arc-shaped yoke shields the magnetic flux leakage and reduces the external magnetic resistance. There is magnetic leakage at both ends of the shielding coil. The inner side of the yoke section is arc-shaped and seamlessly adheres to the outer wall, which increases the effective magnetic permeability area and makes the lower ring Get better support. The unique positive and negative coils greatly improve the efficiency of the system.

Summarize

  Our company has passed IOS 9001 certification and CE certification, etc., and has more than 20 industry patents. We are a very professional manufacturer of digital induction heating equipment. Each equipment will be fully tested by professional engineers before leaving the factory, and will be tracked to the customer's application site to carry out on-site technical debugging and process parameter transfer to ensure that the customer is in use. The technology and process parameters in, provide guarantee for the customer's full production cycle.
 
  The company's production equipment application industry involves various industries and fields such as aerospace, machinery manufacturing, medical equipment, hardware and electrical machinery, smelting, refrigeration and heating and ventilation. "Science and technology innovation" is the soul of our enterprise, and "frank passion" is our driving force. We hope that the services and products of "Beichen Yike" can contribute to the development of your enterprise.