Steel Shell IGBT Medium Frequency Melting Furnace

Product Description

Title: Steel Shell IGBT Medium Frequency Melting Furnace – Provides a good method for selecting steel shell IGBT medium frequency melting furnaces for melting steel, alloy steel, special steel, cast iron, stainless steel and other non-ferrous metal materials.

Keywords: Steel Shell IGBT Medium Frequency Melting Furnace

Description: Steel shell IGBT medium frequency melting furnaces include 0.25T-5T steel shell IGBT medium frequency melting furnaces, provide steel shell IGBT medium frequency melting furnace selection methods, provide steel shell IGBT medium frequency melting furnace prices, steel shell IGBT medium frequency melting furnace power selection, steel shell IGBT medium frequency melting furnace tonnage selection, steel shell IGBT medium frequency melting furnace power consumption selection method. Steel shell IGBT medium frequency melting furnaces are often configured in four ways. Is a steel shell induction furnace more energy-efficient than an aluminum shell induction furnace?

Steel shell IGBT medium frequency melting furnace

1. The steel shell IGBT medium frequency melting furnace is mainly composed of four parts:

1. Power supply and electrical part: parallel inverter medium frequency power supply or series inverter medium frequency power supply

2. Furnace body part: The steel shell furnace body is composed of furnace shell, fixed frame, furnace cover, tilting furnace mechanism, induction coil, magnetic yoke, etc., and leakage alarm device.

3. Transmission device: hydraulic device, hydraulic cylinder, hydraulic station, etc.

4. Water cooling system: closed-loop cooling tower

2. Selection of power size of steel shell IGBT medium frequency melting furnace, selection of capacity size of steel shell IGBT medium frequency melting furnace, and selection method of power consumption of steel shell IGBT medium frequency melting furnace.

3. Price of steel shell IGBT medium frequency melting furnace

The price of steel shell IGBT medium frequency melting furnace is about tens of thousands of yuan per unit, the cheapest ones are tens of thousands of yuan, and the most expensive ones are hundreds of thousands of yuan. The price of steel shell IGBT medium frequency melting furnace is affected by many factors, such as brand, category, specification, market, etc. Before choosing to buy, it is necessary to understand and compare in many aspects. The price of steel shell IGBT medium frequency melting furnace varies with different technical parameter configurations, which are calculated according to the power of the medium frequency power supply and the volume of the furnace body. Different configurations have different prices. This price is for reference only. Contact us for a very low price, please consult for specific prices.

4. Structure of steel shell furnace shell

The furnace shell is made of squirrel cage frame structure made of high-quality thick steel plate rolled and welded. The window has a detachable cover plate, and the frame bottom plate is made of high-quality thick steel plate. The furnace shell is equipped with a contoured yoke. The yoke shielding can reduce magnetic leakage and prevent the furnace body from heating up, improve the power efficiency, and support the induction coil to improve the strength. Without removing the yoke, the coil can be easily disassembled and installed, and the coil can be repaired, observed, and heat-dissipated.

5. The following four configuration methods are often used in steel shell IGBT medium frequency melting furnaces:

The four configuration schemes have their own advantages and disadvantages. Usually, the specific configuration method needs to be finally selected according to the casting process requirements, on-site power conditions, production goals and development scale of the equipment demander, so as to meet the user’s high efficiency, safety and stability in using the equipment, and facilitate flexible adjustment of the process or scale expansion.

Scheme 1. Single power supply method;

Scheme 2. Single power supply (series resonance) one-to-two method;

Scheme 3. Dual power supply (parallel resonance) dual power supply method;

Scheme 4. Large power supply and small power supply + furnace guide switch dual power supply method;

Seven. Is the steel shell induction furnace more energy-saving than the aluminum shell induction furnace?

Theoretically, it is correct. However, since the silicon steel sheet that constitutes the yoke has a large heat generation and needs to be cooled by water, although part of the magnetic field is concentrated, it is consumed by the loss of the silicon steel sheet. Therefore, the steel shell induction furnace is not more energy-saving than the aluminum shell induction furnace. From the perspective of the law of conservation of energy, the shell of an aluminum shell induction furnace does not need water to dissipate heat, while the shell and yoke of a steel shell furnace need many water pipes to dissipate heat. A steel shell induction furnace will definitely waste more electricity than an aluminum shell induction furnace. In actual use, a one-ton energy-saving aluminum shell induction furnace consumes less than 500 degrees of electricity to melt one ton of steel, while a one-ton steel shell induction furnace consumes more than 600 degrees of electricity to melt one ton of steel. It saves electricity because there is less magnetic leakage, and the steel shell has the shielding effect of the yoke, which accumulates the magnetic field in the center of the furnace to the greatest extent!

Sixth, how is the steel shell IGBT medium frequency melting furnace more energy-saving?

From the perspective of power supply: one is IGBT rectification and inversion. The power factor of six-pulse rectification is low, the interference is large, and the power consumption is high. It would be better to use twelve pulses.

Another power supply is to use a series steel shell IGBT medium frequency melting furnace, which is divided into two types: 6-pulse and 12-pulse rectification. Generally, a furnace over 1 ton uses 12-pulse rectification, which has a high power factor and saves electricity.

From the perspective of the furnace: there are aluminum shells and steel shells. Aluminum shells without magnetic yokes generate a lot of heat and consume electricity. Steel shells must have magnetic yokes, and the magnetic circuit is sequential and saves electricity.

Before the molten steel is full, the furnace must be full. The denser the material, the greater the output power of the power supply, and the faster the melting. At the same time, the material must be added multiple times to make it fall quickly into the molten pool. The material cannot be suspended in the air to prevent the molten steel below from boiling and causing high temperature to penetrate the furnace.

7. What is the difference between a high-frequency melting furnace and a steel shell IGBT medium-frequency melting furnace?

High-frequency melting furnaces are suitable for melting gold, silver, copper, etc. and their alloys. The greater the power, the faster the melting speed, and the temperature is as high as 1800℃. High-frequency melting furnaces are economical and practical, with efficient melting and rapid melting of multiple types. The current frequency is between 100 and 500 kHz (kilohertz), which is suitable for melting 1-5KG precious metals. It has fast speed, low price, small size and small footprint.

Steel shell IGBT medium frequency melting furnace includes 0.25T-10T steel shell IGBT medium frequency melting furnace, which is widely used for melting non-ferrous metals. It is mainly used for melting steel, alloy steel, special steel, cast iron and other ferrous metal materials as well as stainless steel, zinc and other non-ferrous metal materials. The current frequency is between 500 and 10000 Hz (hertz), which can melt 5KG-60T various metals with the characteristics of fast speed and high efficiency.

VIII. What are the main factors leading to accidents in steel shell IGBT medium frequency melting furnace?

The reasons for most accidents in steel shell IGBT medium frequency melting furnaces in metallurgical plants are:

1. Wet raw materials in the charge cause steam explosion.

2. Lack of operating skills in temperature measurement and sampling or adding alloys leads to splashing of molten metal.

3. Putting large metal materials into the furnace causes iron liquid to splash.

4. Unreasonable feeding system leads to bridging.

5. Failure to avoid outside the safety line leads to injury.

6. Contact with power conductor, failure of safety interlock control or contact with incompletely discharged capacitors, etc., leads to electric shock or death.

7. Lack of proper safety training.

IX. Yoke structure of steel shell IGBT medium frequency melting furnace

A. The yoke is made of Q140 oriented cold-rolled 0.3mm thick high-quality silicon steel sheet produced by Wuhan Iron and Steel, and clamped on both sides with stainless steel plates. After microcomputer optimization design and precision production, the contoured arc surface structure is consistent with the arc shape of the outer diameter of the coil. The yoke (to the induction coil) covers an area of ​​more than 70%. The yoke fixing method: the yoke is close to the induction coil, and a high temperature and high voltage insulation cushion is used between them. Five M24 screws are tightly pressed against the stainless steel plate on the back of the yoke.

B. A specially designed water-cooled radiator is installed inside the stainless steel clamping plate of the yoke. When the electric furnace is in operation, the temperature of the yoke is kept at room temperature to prevent the yoke from deforming due to the increase of temperature, thereby strengthening the support for the induction coil and improving the overall strength of the furnace.