Working Principles of Medium Frequency Smelting Furnace2021-09-23
KGPS SCR Medium Frequency Power Supply is a static frequency converter that can transform the Power Frequency Three-phase Power Supply to Medium Frequency Single-phase Alternative Current Power Supply through SCR, and are mainly being used for induction heating, induction melting and some other occasions that medium frequency power supply are needed. The working principle of induction heating is transferring the electric energy to metal that to be heated and then the electric energy will change into heat energy inside of the metal, while there is no direct contact between Induction Coil and the metal to be heated, and the energy is transferred through electromagnetic induction. For those advantages of high efficiency, less weight, fast starting up and no impact, easily-adjusting and the frequency will track the variation of the load automatically, the KGPS SCR Medium Frequency Power Supply is replacing the Medium Frequency Generator gradually. This unit applied AC-DC-AC transforming system and consists of a three-phase Full-bridge Rectifier Circuit, Inductor Filter Circuit, and Parallel Inverter Circuit. Its SCR components are water-cooled and its control system consists of an integrated circuit which is stable and reliable. Applied the advanced zero-volt soft starting-up system, it’s safe, convenient, and economic and is the...
Furnace lin knotting method for medium frequency furnace2021-09-22
There are two knotting methods for crucible induction furnace lining: wet knotting and dry knotting. Both methods can be used for knotting acidic lining, neutral lining, and alkaline lining. Wet knotting refers to knotting by adding water, sodium silicate, brine, and other adhesives to the lining knotting material. Because the knotting material contains certain moisture, the dust is less and the formability is good during construction. However, wet knotting also has a series of shortcomings: the knotted lining material is not compact enough, and the refractory of the lining decreases; Lining drying takes a long time. When the moisture in the lining vaporizes, the insulation performance of the inductor decreases. Poor handling often leads to the breakdown of inter-turn fire and may also cause a short circuit to the ground. Therefore, wet tying lining should be avoided as much as possible for larger smelting furnaces. At present, the dry furnace building method is widely used in the furnace building of crucible induction furnaces. The dry furnace building method without cementing agent can give full play to the refractory performance of the lining material, make the sintering layer of the lining thinner, the powdery layer thicker, reduce the heat dissipation loss...
Hot rolling mill from Luoyang Hongteng2021-09-18
Hongteng rolling mill is mainly suitable for the 500kg-10t/h steel bar production line. According to the customer’s situation, we can divide these production lines into three categories: 1. Simple, 2. Semi-continuous rolling, 3. Casting and rolling. We recommend using billet multiply 60mm by 60mm for the production of 5 tons, which can save the investment cost and better match the production requirements. The production line of the rolling mill has the characteristics of simple operation, flexible conversion, and cost-saving The rolling mill is mainly divided into roughing mill，medium rolling mill and finished rolling mill. The arrangement of the rolling mill is also very flexible. 1. Our rolling mill contains the guide rail, which can guide the bar into rolling mills quickly and accurately 2. We can also offer you the auxiliary equipment of shearing, cut to length, cooling bed, upper and lower roller table, translating roller table, 3. All our equipment of rolling mill is completely new, not used or second hand 4. Because 80% of our products are exported, so we know better about your requirements, so our plan is more suitable for you, and we can ensure that our plan is more competitive 5. We can also customize...
Four Tilting Methods of MF Induction Melting Furnace2021-09-17
Four Tilting Methods of MF Induction Melting Furnace The tilting mechanism of medium frequency induction melting furnace body has four modes: lifting tilting furnace, screw transmission mechanism tilting furnace, worm gear and worm mechanism tilting furnace, and hydraulic device tilting furnace. 1, Lifting tilting furnace The lifting type tilting furnace is to lift the lifting ring installed on the furnace frame through the lifting device on the crown block or special crane so that the furnace body can be turned over to complete the tapping process. This method is simple and suitable for tapping in a medium frequency induction furnace with a small capacity. 2, Lead screw transmission mechanism tilting furnace The motor drives the screw lifting device through the reducer to complete the turnover of the furnace body and thus complete the tapping process. This method is suitable for small capacity medium frequency induction furnaces. 3, Tilt furnace of the worm gear and worm mechanism The worm gear and worm mechanism of the tilting furnace are connected with the horizontal axis of the furnace body rotation, and the worm gear and worm mechanism are driven by a motor to turn the furnace body over to complete the tapping process....
What is a horizontal rolling mill?2021-09-16
At present, the horizontal rolling mill is the main equipment of small and medium-sized steel rolling enterprises in China. It is mainly used to produce all kinds of section steel rebar, wire rod, deformed bar, angle bar, and small steel billets. Its main features are: 1) A set of rolling mills is driven by a motor. The roll speed of each mill is the same, and the rolling speed cannot be increased with the increase of the length of the rolled piece, so the output is low, and the labor productivity is low. 2) That structure of the rolling mill is generally three-roll type or two-roll alternating type 3) That operation mode of the rolling mill is shuttle rolling or loop roll. Each rolling mill can roll several passes, with flexible deformation, strong adaptability, a wide range of product varieties, and easy operation. 4) That mill has simple equipment, low investment, and fast plant construction
Importance of Cooling System for Medium Frequency Furnace2021-09-16
During the working process of the medium frequency furnace, the components carrying large currents, such as electric furnace coils, yokes, water-cooled cables and power cabinets, all need water cooling. The cooling water system is the key system in the medium frequency furnace device and an important component to ensure the normal operation and safe operation of the equipment. First, the equipment cooling requirements are as follows: 1, According to the equipment “instructions” provisions of the water supply pressure, flow water supply. 2. Use industrial demineralized water as far as possible-PH value: 7.2 ~ 8.0 3. It is better to supply water from special cooling towers for power supply cooling and furnace body cooling respectively. In particular, the power supply shall be cooled by a water-water exchanger or closed cooling tower. 4. As the acidity of water and the content of calcium and magnesium impurities gradually increase, corrosion or scale will occur, affecting the heat dissipation effect and service life of the heat exchanger. The cooling equipment should be cleaned in time. 5. Sensors and water-cooled cables are equipped with pressure gauges, temperature meters, water pressure regulating switches, and other components to monitor the cooling water system at the entrance and...