A production method and system for magnesium alloy continuous extrusion temperature control continuous rolling

Abstract

The invention discloses a magnesium alloy continuous extrusion and temperature controlled continuous rolling production method. The method includes the following steps: (1) extruding magnesium alloy billet into magnesium alloy plates and strips; (2) measuring initial temperature and initial thickness of the magnesium alloy plates and strips, and obtaining and inputting a preset scheme according tothe measured initial temperature and initial thickness, wherein the scheme at least includes a preheating scheme and a rolling scheme for rolling passes and the rolling scheme at least includes the rolling passes and pre-press quantity of the rolling passes; (3) rolling; and (4) completing the rolling. The magnesium alloy continuous extrusion and temperature controlled continuous rolling production method adopts a rolling method of combining the continuous extrusion and on-line temperature controlled rolling, realizes the efficient continuous operation of the continuous extrusion and temperature controlled rolling process of the magnesium alloy billet through adaptive control of the extrusion and rolling process of the magnesium alloy billet, and matches real-time state of the plates andstrips, which is beneficial to improve the smoothness of the rolling process and the stability of the product quality.

Description

technical field [0001] The invention relates to a production method, in particular to a magnesium alloy production method. Background technique [0002] With the development of global urbanization and industrialization, the number of vehicles and aircrafts has increased rapidly. However, this brings great challenges of energy consumption and low-carbon development. Lightweight is an effective means to reduce vehicle energy consumption and reduce carbon emissions. Magnesium alloy is a light metal structural material, and the density of pure magnesium is 1.74g / cm 3 , which is only 1 / 4 of steel and 2 / 3 of aluminum, so the use of magnesium alloy to make parts has a significant weight reduction effect and can significantly reduce energy consumption. [0003] In recent years, the demand for magnesium alloy sheets has been increasing in the fields of aerospace, automobiles and rail transit. Magnesium alloys have good hot extrusion plasticity, and extrusion is an economical and ...

AI Technical Summary

Problems solved by technology

In the technical solution disclosed in this patent document, the reciprocating tension-free rolling method of single-stand multi-pass repeated biting has the following disadvantages: ① The repeated biting method will inevitably lead to low dimensional accuracy in the thickness direction, and the plate ② The result of tension-free rolling is poor plate shape, uneven, easy warping, and waves; The required production line is very long; ④ Repeated biting, frequent start and stop of the rolling mill leads to low production efficiency

However, this patent document does not disclose how to control the temperature to generate metal coils

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