1. Manufacturing and application of induction melting furnace

Electric furnace manufacturers should take the user's needs as the starting point, improve the digitization, intelligence and automation of induction melting furnaces. In the manufacturing process, we should pay attention to the following problems in production applications.

(1) Automatic adjustment of power. The display and monitoring of power factor, and meet the requirements of industry access conditions such as energy conservation and environmental protection.

(2) Monitoring of molten iron temperature, monitoring of cooling water temperature and pressure.

(3) Display and monitoring of the leaking furnace index.

(4) Detection, analysis, display, elimination of faults and detection and analysis of each alarm system itself, ensuring that the moment is sensitive and easy to use.

(5) The steel shell furnace body is very inconvenient in the maintenance and repair work such as installing or replacing the water pipe. Can the working part be made into the movable window, and then the bolts are used up and closed, and the water pipe in and out should be convenient for maintenance and repair. Safe and firm, not suitable for water seepage.

(6) Induction melting furnace is most afraid of water, but it is inseparable from water. The use and maintenance of water treatment system and cooling water system are two major problems in induction melting furnace application. Manufacturers should provide technical support for use and maintenance.

(7) The cooling water circulation system of the induction melting furnace should be equipped with an emergency water pump. The pump with a diesel generator or a gasoline engine pump can also be equipped with a separate set of security power supply. It is best to have the above two types of power failure protection measures.

In short, with the joint efforts of manufacturers and users, digital, intelligent, and automated technologies will improve the quality of induction melting furnaces in the manufacturing process, improve production efficiency, safety and casting quality during use, and promote the induction melting furnace. development of.

2. Energy saving and green casting

Energy conservation and environmental protection work is a systematic project. It is not enough to rely on one or two energy conservation and environmental protection measures. It is necessary to apply various technological measures, and should combine technology energy conservation and environmental protection with management energy conservation and environmental protection in raw materials, equipment, processes and Management and other aspects of comprehensive control, in order to achieve good energy and environmental protection effects, the following are several effective energy conservation and environmental protection measures.

(1) Suitable block size and thickness, light and thin scrap can be packed, and the recycled material should be cleaned and used. The scrap should be decontaminated. All the charge should be preheated and accurately mixed.

(2) The higher the bulk density of the middle and lower charge, the better the heating efficiency, and the cold material should be continuously added to preheat and avoid melting a small amount of molten iron.

(3) Reasonable power supply system and furnace operation technology, first supply about 60% of power, after the current impact stops, quickly increase the power to the maximum value, and accelerate the melting of the charge.

(4) Control the high temperature refining and tapping temperature. After each tapping, the part of the molten iron should be left in the furnace, which is convenient for melting, so as to melt quickly.

(5) Try to use the smelting operation method of continuous operation.

(6) Shorten the no-load auxiliary operation time, such as feeding, slag, temperature measurement, sampling, waiting for testing, adjusting chemical composition, waiting for pouring, etc., the shorter the production efficiency, the lower the energy consumption.

(7) Pay attention to maintaining the normal operation of the intermediate frequency power supply device, furnace body and cooling water system, reduce the failure rate, reduce the number of shutdowns in the middle, save energy consumption, and ensure smooth production.

(8) Manufacturers and users of induction melting furnaces should pay attention to the research and development and use of energy-saving and environmental protection facilities for induction melting furnaces, such as dust purification equipment, water recycling, energy-saving and environmentally-friendly raw materials, raising awareness of energy conservation and environmental protection, and energy conservation and environmental protection work. Be realistic, meet industry access conditions, and practice the green casting path.