An Investigation In To The Induction Furnace Usage In Order To Its Design For Hardening Of Harvesters Cutting Blades
2007
Sharifnasab, H., Member of Scientific Board of Agricultural Engineering Research Institute (AERI)
With a yearly use of about 2000000 pieces of triangular blades for mowers, binders and combines in Iran, their fabrication seemed economically feasible. The major problem, however, is the blade hardening. Only the edges of blades should be hardened leaving the rest softened in order to withstand shocks. Among all methods of hardening; the traditional and modern; the method of case hardening using a frequency stove, served the purpose the best. The various components for the hardening method consisting the rectifier, head and frequency changer as well as hardening depth and hardening time were calculated. The peripherals, that is; the flow rate for the stove head cooler was determined. An economical coast analysis was given for a piece of hardened blade.
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