Induction Billet Heating
______________________________________________________________________________________________ Question of the Month: We process copper alloy bars and billets in our factory. Gas furnaces have been used to heat billets made of C14500, C44300, C46400, C48500, C64200, and others. Billet/bar diameters are within the 200-240 mm range. The maximum temperature of our furnace is 860oC, which is sufficient for these jobs. However, […]
————————————————————————————————————————————————— Induction heating is commonly used to heat cylindrical workpieces and rectangular shaped parts including RCS (round-corner-square) billets and bars, blooms, slabs, and plates. The uniformity specifications may include maximum tolerable thermal gradients, such as surface-to-core, end-to-end, and side-to-side. A nonuniformly heated billet (over-heated and under-heated areas) can cause problems at subsequent process stages. Depending […]
Certain numerical computational methods or software are preferred for each family of induction heating applications. There is not a single universal computational method that optimally fits all types of applications. In recent years, the finite element method (FEA) became the dominant numerical simulation tool for a variety of engineering applications. Though FEA is a very […]
Induction heating is widely used to heat metals prior to hot forming including forging, upsetting, rolling, extrusion, and other methods. Billets are heated either in cut lengths or continuously and are forged in presses, hammers, or upsetters, or are extruded. Steel components by far represent the majority of hot-formed billets, although other materials including titanium, […]
The selection of forging temperatures for steels is based on carbon content, alloy composition and forging specifics, including the temperature range for optimum plasticity and the amount of reduction. Based on these considerations, optimum forging temperatures that result in the material’s lowest flow stress (lowest forging pressure) are selected. Click here to read more.
The selection of principal process parameters, such as power, frequency and coil length, is a function of the metal to be heated, the required temperature uniformity, billet size and other parameters. Depending on the application, power ratings from hundreds to thousands of kilowatts and frequencies from 60Hz to 10kHz are commonly used. Click here to […]