Steel plate hot forming method based on anti-oxidation coating and production line for implementing same

Abstract

The invention discloses a steel plate hot forming method based on an anti-oxidation coating and a specifically designed hot forming production line for implementing the method. The method comprises the following steps: cleaning the surface of a workpiece to ensure that no oil contamination exists; utilizing automatic spraying equipment to spray coating on the surface of the workpiece; heating the workpiece by heating equipment to ensure the workpiece to reach austenitizing temperature thereof; transferring the workpiece to a rapid press machine, and rapidly finishing integration working procedures of pressing, compound die, pressure maintaining, quenching and forming in the rapid press machine; and lowering the temperature of the workpiece from austenitizing temperature to martensitic transformation temperature in the processing procedure. The hot forming production line comprises automatic spraying equipment, heating equipment, the rapid press machine and a transmission mechanism. The invention has the following beneficial effects of solving the problems of oxide skin generation in hot forming and causing the hot forming method to have lower cost, higher accuracy and simpler operation.

Description

technical field [0001] The invention relates to a hot forming method, in particular to a steel plate hot forming method based on an anti-oxidation coating, and to a hot forming production line implementing the method. Background technique [0002] Steel plate hot stamping technology is a kind of special high-strength steel plate heated to austenitic temperature, and then quickly moved to the mold and fast stamping, and the workpiece is guaranteed to be cooled by the mold (instead of air) under the pressure of the press. Quenching and cooling under the condition of high speed, so as to finally obtain a new forming process for ultra-high-strength stamping parts (martensitic structure, with a strength of about 1500MPa or even higher). The key processes of the thermoforming process are heating, stamping, pressure holding and cooling, and the last three parts are completed in one step. For steel plates with small thickness and large surface area, oxide skin will be produced duri...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hot-melt roller that can not only solve the problem of bonding between the Al-Si coated ultra-high-strength steel plate and the magnetic roller during the heating process, but also ensure the prevention of oxidation at a low cost, simple manufacturing process, and high processing accuracy. Forming method to solve the problem that it is difficult to avoid the generation of scale in existing thermoforming or the problem that the cost is too high and the accuracy is difficult to guarantee despite avoiding the generation of scale

Simultaneously, the present invention overcomes the technical problems such as the adhesion problem between the existing Al-Si coated ultra-high-strength steel plate and the cover magnetic roller and the high price of the atmosphere protection furnace.

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