Rotary type uniform electric heating device

Abstract

A rotary type uniform electric heating device comprises a heating coil. A supporting seat is arranged on the lower portion of the heating coil; a plurality of supporting claws are installed on the supporting seat and arranged obliquely towards the center of the heating coil under the elastic force effect; guide rails are arranged below the supporting seat; oil cylinders are arranged on the guide rails in a slide fit mode; jacking columns for opening the supporting claws are fixed to the head portions of piston rods of the oil cylinders; inclined planes corresponding to the supporting claws innumber are distributed on the side walls of the jacking columns at intervals and extend to the upper end faces of the jacking columns; and the supporting seat is connected with a rotating mechanism. According to the rotary type uniform electric heating device, integrated application of feeding and discharging functions and the rotary heating function is achieved, heating uniformity is improved greatly, the product qualification rate is higher, and economic benefits are quite considerable.

Description

technical field [0001] The invention belongs to the technical field of heat treatment, in particular to a rotating uniform electric heating device. Background technique [0002] There is a kind of large ring gear parts in machining, the forging of the blank and the quenching after tooth profile processing are important processes. In the past, heating with coal or gas had many disadvantages and was not conducive to environmental protection. Now it is basically eliminated, and electric heating is adopted accordingly. This is not only conducive to environmental protection but also conducive to product quality control. [0003] But the problem also came out, when most of the electric heating (such as intermediate frequency) furnaces are heating the workpiece, the workpiece is still; the big disadvantage is that the workpiece is heated unevenly, which leads to a relatively long heating time, so the quality of the forged blank There will be flaws. [0004] After the tooth shape...

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Problems solved by technology

[0003] But the problem also came out, when most of the electric heating (such as intermediate frequency) furnaces are heating the workpiece, the workpiece is still; the big disadvantage is that the workpiece is heated unevenly, which leads to a relatively long heating time, so the quality of the forged blank will be flawed

[0004] After the tooth shape is processed, when the ring gear is heated and quenched, the uneven heating of the workpiece will lead to defects such as uneven hardness and unqualified structure during quenching.

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