Method for straightening and strengthening magnesium alloy extrusion material online by using waste heat
A technology for extruding materials and magnesium alloys, applied in the field of magnesium alloys, can solve problems such as unfavorable production efficiency, and achieve the effect of saving energy and improving strength
Active Publication Date: 2020-06-02
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0012] In summary, it can be seen that the production line of magnesium alloy extrusions in the prior art is too long, and tractors and straightening machines need to be installed separately, which is not conducive to improving production efficiency and saving production costs
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[0048] The method for on-line straightening and strengthening of magnesium alloy extruded materials using waste heat described in the present invention will be further explained and illustrated in conjunction with the accompanying drawings and specific examples below. The technical solution constitutes an improper restriction.
[0049] figure 1 It schematically shows the preparation process of the magnesium alloy extruded material using waste heat on-line straightening and strengthening method according to the present invention.
[0050] Such as figure 1 As shown, in the extrusion process, the ingot is heated to a set temperature by induction, and the set temperature can be between 350°C and 450°C according to different alloy compositions. Heating is carried out by means of extrusion barrels, which are heated at the same temperature as the set heating temperature of the ingot. The mold is heated in a heating furnace, at this time, the heating temperature is 10-50°C lower th...
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Abstract
The invention discloses a method for straightening and strengthening a magnesium alloy extrusion material online by using waste heat. The method includes the steps that a set traction force is appliedon the magnesium alloy extrusion material at the downstream part of the outlet end of an extruder so that thermoplastic deformation of the magnesium alloy extrusion material can happen, wherein the strain range of the thermoplastic deformation is 0.5%-6%. By means of the method, the magnesium alloy extrusion material can be straightened and strengthened online by using the waste heat; on the onehand, it can be guaranteed that continuous production of magnesium alloy extrusion material products is achieved on a shorter production line, so that process steps are saved, the production efficiency is improved, and the cost and energy consumption of a magnesium extrusion process are reduced; and on the other hand, the high precision of the produced magnesium alloy extrusion material can be ensured.
Description
technical field [0001] The invention relates to a magnesium alloy method, in particular to a method for extruding a magnesium alloy material. Background technique [0002] The magnesium-aluminum alloy extruded material in the light alloy has higher comprehensive properties such as strength, plasticity and corrosion resistance than the as-cast state. Light alloy extrusion processing can realize one-time extrusion molding, high production efficiency, and great product flexibility. , can produce products with complex cross-sectional shapes, and the lightweight effect is obvious. Therefore, it has received keen attention in the fields of aerospace, automobiles, and rail transit. [0003] In addition, magnesium alloys have a low density (density of 1.8g / cm 3 ), high specific strength and specific stiffness, and some excellent physical properties (such as thermal conductivity, electromagnetic shielding performance, damping and shock absorption performance and response characteris...
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IPC IPC(8): B21C23/04B21C35/03
CPCB21C23/04B21C35/03
Inventor 徐世伟谢玉朱健桦唐伟能
Owner BAOSHAN IRON & STEEL CO LTD