Production line for producing magnesium alloy plate and strip coils by continuous extrusion and coiling

Abstract

The invention discloses a production line for producing magnesium alloy plate and strip coils by continuous extrusion and coiling. The production line includes an extruder, a centering pinch roll arranged at the outlet of the extruder, a roll surface heating device of the centering pinch roll heating the roll surface of the centering pinch roll, a tension pinch roll arranged downstream of the centering pinch roll, a roll surface heating device of the tension pinch roll heating the roll surface of the tension pinch roll, a heat transfer roll arranged in order along the conveying direction of the production line, a temperature-controlled coiler including a coiling drum, a coiling drum surface heating device heating the surface of the coiling drum, an auxiliary coiling roll and a roll surfaceheating device of the auxiliary coiling roll, a first plate and strip heating device arranged upstream of the temperature-controlled coiler relative to the temperature-controlled coiler and heating magnesium alloy plates and strips which are about to enter the temperature-controlled coiler, and a control unit used for controlling heating temperature of the magnesium plates and contact rolls in the whole production line so as to ensure that the magnesium plates undergo predetermined bending deformation in an optimum plastic deformation temperature range.

Description

technical field [0001] The invention relates to a production line, in particular to a production line for producing magnesium alloy products. 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...

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, how to generate metal coils, especially magnesium coils that need to be coiled within a certain temperature range, is not involved in the technical solution disclosed in this patent document.

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