Hot upsetting local heating device

Abstract

The invention discloses a hot upsetting local heating device. The hot upsetting local heating device comprises an alternating current power supply, a heat conduction tube, a first copper tube coil, aconveying unit, a slide way and a discharging unit, wherein the first copper tube coil is electrically connected with the alternating current power supply; the heat conduction tube comprises a heat conduction round tube and a heat conduction straight plate; the first copper tube coil surrounds the outer side of the heat conduction round tube of the heat conduction tube; the conveying unit is placed below the heat conduction tube; the left side of the conveying unit is connected with the right end of a bottom plate of the slide way; the top end of the discharging unit is connected with the bottom end of a second slide way of the slide way; a steel feeding channel is arranged on the right side of the conveying unit; steel is conveyed into the heat conduction tube wound with the copper tube coil through the conveying unit; the heat conduction round tube locally heats the steel; the heat conduction straight plate insulates the steel; and the copper tube coil at the upper end of the discharging unit further insulates the steel. Energy is saved, the probabilities of surface peeling and the like of a material are reduced, and the follow-up upsetting effect is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of hot heading, in particular to the technical field of a local heating device for hot heading. 【Background technique】 [0002] Because the existing upsetting machine adopts cold upsetting technology, it is easy to cause stress concentration in the upsetting position of the workpiece to form dark lines, cracks and other phenomena during upsetting. Therefore, a hot upsetting technology has been developed to solve this problem. It is to heat the whole bar, which is a waste of energy, and the bar that turns red after heating will also cause great damage to the mold, which increases the cost. In addition, the heating of hot heading bolts, nuts, and raw materials uses medium-frequency or high-frequency induction coils Heating, so that the heating time is short and the efficiency is high, but this kind of induction device is generally set far away from the upsetting station (main die opening), so a large tempera...

AI Technical Summary

Problems solved by technology

[0002] Because the existing upsetting machine adopts cold upsetting technology, it is easy to cause stress concentration in the upsetting position of the workpiece to form dark lines, cracks and other phenomena during upsetting. Therefore, a hot upsetting technology has been developed to solve this problem. It is to heat the whole bar, which is a waste of energy, and the bar that turns red after heating will also cause great damage to the mold, which increases the cost. In addition, the heating of hot heading bolts, nuts, and raw materials uses medium-frequency or high-frequency induction coils Heating, so that the heating time is short and the efficiency is high, but this kind of induction device is generally set far away from the upsetting station (main die opening), so a large temperature drop will occur, causing oxidation and peeling on the surface of the material, affecting the scheduled upsetting effect

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