Heating units, high-frequency furnaces and roll units for hot stamping

Abstract

The invention discloses a heating apparatus, a high frequency furnace and a roller unit for hot stamping. The heating apparatus comprises a steel plate supply unit, a heating furnace and an extraction unit; the heating furnace comprises a plurality of rollers and high-frequency coils; each roller comprises a tube, a plurality of end caps, a plurality of bearing seats and a plurality of shafts; a first end of each end cap is assembled to the end portion of the tube; a second end of each end cap forms a polygonal connection hole; each bearing seat with a through hole is arranged adjacent to the end portion of the tube; each shaft is inserted into corresponding bearing seat; a first end of the shaft is assembled to the connection hole of the end cap; a second end of the shaft is disposed in the through hole of the bearing seat; and a backing ring is assembled on the send end of the shaft.

Description

technical field [0001] The present invention relates to a heating device embodied as a continuous process for hot stamping, and the heating device includes a plurality of rollers with improved durability, and the present invention relates to a high-frequency furnace and rollers for the heating device unit. Background technique [0002] In the vehicle manufacturing industry, there has always been a focus on reducing the weight and increasing the strength of vehicles. Recently, hot stamping technology is at the center of everyone's attention. Hot stamping technology was proposed by Norrbottens Jarnverk A.B in the early 1970s. This hot stamping technique is described in detail in British Patent No. 1490535 issued to the company. [0003] refer to figure 1 As shown, in the hot stamping technology, the heating furnace 10 heats the steel plate 1 to A c3 or higher, and a press 20 forms a heated steel sheet and heat-treats it, thereby manufacturing a steel sheet part 1b having ...

AI Technical Summary

Problems solved by technology

However, when the heating furnace uses high-frequency induction heating (hereinafter referred to as "high-frequency heating furnace"), there is a problem in the heating furnace that the temperature of the steel plate is excessively increased or the steel plate is deformed when the steel plate is conveyed.

Therefore, up to now, high-frequency furnaces have only been used for heat treatment of relatively thick parts and cannot be used for heat treatment of thin parts

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