Casting of metal in medium frequency smelting furnace
The principles of copper alloy smelting include: cathode copper (electrolytic copper), scrap generated during processing, and outsourcing scrap copper. To achieve a reasonable alloy composition ratio, the ratio of raw materials is directly related to the ingot product. The key to quality and production cost.
In the copper alloy smelting process, according to the alloy composition ratio, suitable metal raw materials are selected, melted and refined at high temperature, and alloy melt with qualified composition is obtained. Melting and purification, through the use of chemical reaction or physical absorption, sedimentation and other refining measures to degas, to ensure the quality of the metal added to the metal. The river melts the metal and converts the solid raw material into a liquid through high temperature heating so that it has enough fluidity to fill the mold cavity during manufacturing.
In order to achieve the goal of reducing production costs, the following principles are generally adopted: To produce high-quality alloys, high-grade metal raw materials should be selected. When producing ordinary products, try to choose low-cost raw materials before ensuring the quality. For ordinary raw materials within the allowable range of chemical composition, the ratio of precious metal elements should be as low as possible.
Medium frequency smelting furnace copper alloy induction furnaces are generally divided into iron core induction furnaces, ironless induction furnaces and vacuum induction furnaces.
The characteristics of iron-core induction electric furnace smelting are: fast melting speed, high thermal efficiency, and less oxidation loss; due to the stirring effect of electromagnetic force, it can ensure uniform composition and temperature; the surrounding temperature is low, the working conditions are good, the operation is simple, and manpower is saved. ; There must be a certain amount of melt in the furnace, which is only suitable for continuous production of large quantities and simple varieties.