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About UsRuixinsheng is a technological innovation enterprise integrating R&D, design and production services. Over the years, relying on its strong technical strength, it has cooperated with many well-known electric furnace companies and advanced scientific research institutes at home and abroad, and is committed to the R&D and manufacturing of high-end medium-frequency induction melting systems and heating equipment.
营销与服务
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ProductsThe series resonant dual-powered induction melting furnace and parallel resonant induction melting furnace independently developed by the company are excellent in terms of power saving rate, melting rate, stability and humanized operation, and have been unanimously praised by the majority of users.
营销与服务
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Customer CasesWith its exquisite craftsmanship and stable performance, our products are sold all over the country and exported to foreign countries. Based on the principle of "everything for the customer", our company always insists on reducing the high maintenance cost of equipment for foundry enterprises.
营销与服务
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BlogOur company has a complete range of spare parts, most of which are original parts of imported advanced products. In order to solve the problems of foundry production enterprises using imported equipment and some domestic monopoly equipment manufacturers with high charges and low efficiency.
营销与服务
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Contact UsWe provide fast and reliable emergency services. If traffic permits, we will respond quickly within 1 hour after receiving the maintenance notice and send professional maintenance personnel to the scene within 24 hours.
营销与服务
What is the difference between steel shell electric furnace and aluminum shell electric furnace?
Release time:
2024-10-19
Medium frequency induction melting heating speed, high efficiency, less heat loss, less heat loss, relatively low workshop temperature, reduce smoke and dust, save energy, improve productivity, improve working conditions, reduce labor intensity, purify the workshop environment and other aspects of the effect is remarkable. Especially for cast iron, induction melting furnace is beneficial to obtain low sulfur liquid iron is incomparable to cupola. Foundry enterprises in the selection of medium frequency melting furnace should be based on the transformer capacity, output requirements, investment quota as the selection criteria, in the purchase of equipment should pay attention to the following matters.
One. Medium frequency induction melting conditions
1.1 medium frequency induction fusion transformer capacity
At present, for the SCR full-bridge parallel inverter intermediate frequency power supply commonly used in the industry, the numerical relationship between the transformer capacity and the value of the power supply is: the value of the transformer capacity = the value of the power supply x 1.2
For IGBT half-bridge series inverter intermediate frequency power supply (commonly known as one for two, one for melting, one for heat preservation, and two for simultaneous operation), the numerical relation between transformer capacity and power supply power is: value of transformer capacity = value of power supply x 1.1
The transformer is a rectifier transformer. In order to reduce the interference of harmonics, it is dedicated to a special machine as much as possible, that is, a medium frequency power supply is equipped with a rectifier transformer.
1.2 medium frequency induction fusion line voltage
For intermediate frequency power supplies below 1000KW, three-phase five-wire 380V,50HZ industrial power supply is generally used, and 6-pulse single rectifier intermediate frequency power supply is configured. For intermediate frequency power supplies above 1000KWY, the focus is on using 660V incoming line voltage (some manufacturers use 575V or 750V, because 575VZ or 750V is a non-standard voltage grade, accessories are not easy to purchase, it is not recommended to choose) to configure 12 pulse dual intermediate frequency power supply, there, there are two reasons: the first is to increase the rated working voltage by increasing the incoming line voltage; the second is that the harmonics generated by high power will interfere with the power grid. Through double rectification, a relatively straight DC current can be obtained. The load current is a rectangular wave, and the load voltage is close to a sine wave, reducing the impact of power grid interference on other equipment.
Some users blindly pursue high voltage (some 1000KW use 900V incoming line voltage), and achieve the purpose of energy saving since low current. Do you know that this is at the cost of the service life of the electric furnace, and the loss outweighs the gain? High voltage is easy to cause the service life of electric components to be shortened, copper bars and cables to be tired, thus greatly reducing the service life of the electric furnace. In addition, for electric furnace manufacturers, high voltage reduces raw materials and saves costs in terms of materials. Electric furnace manufacturers are certainly happy to do so (high price low cost.) It is still the manufacturer of the electric furnace that suffers.
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