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Rolling technology of Mg-Zn magnesium alloy sheet
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A magnesium alloy, mg-zn technology is applied in the field of rolling process of magnesium alloy sheets, which can solve the problems of low production efficiency and achieve the effect of good comprehensive mechanical properties
Active Publication Date: 2014-10-22
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
[0005] Aiming at the technical problem that in the prior art, the production of Mg-Zn series magnesium alloy plates is carried out through the extrusion process, not only the production efficiency is low, but also the process cannot be used for the production of wide-width magnesium alloy plates. The purpose of the present invention is to provide a The rolling process of Mg-Zn series magnesium alloy plates, this process can not only be used for the production of wide magnesium alloy plates, but also has high production efficiency and stable quality of the produced Mg-Zn series magnesium alloy plates, which can meet the needs of large-scale, Batch and efficient production requirements
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Embodiment 1
[0022] Step 1. Cut the head and tail of the ingot and peel off the skin, and then undergo a homogenization heat treatment at 310°C for 36 hours;
[0023] Step 2. Keep the temperature at 310°C, roll the first pass, and the reduction is 20%; keep the temperature at 310°C, roll the second pass after 15 minutes, and the reduction is 25%;
[0024] Step 3. Cool in air to 140°C and keep warm for 10 minutes to make the temperature of the whole billet uniform;
[0025] Step 4. Rolling at 140° C., the reduction in each pass is 15%, rolling 3 passes; then rolling 10%, the processing is completed.
Embodiment 2
[0027] Step 1. Cut the head and tail of the ingot and peel off the skin, and then undergo a homogenization heat treatment at 350°C for 18 hours;
[0028] Step 2. Keep the temperature at 350°C, roll the first pass in the rolling mill, and the reduction is 10%; keep the temperature at 330°C, roll the second pass after 40 minutes, and the reduction is 25%;
[0029] Step 3. Water cooling, then heating to 190°C, and keeping warm for 60 minutes to make the temperature of the whole billet uniform;
[0030] Step 4. Rolling at 190°C, the reduction in each pass is 25%, rolling 2 passes; then rolling 15%, the processing is completed.
Embodiment 3
[0032] Step 1. Cut the head and tail of the ingot and peel off the skin, and then undergo homogenization heat treatment at 330°C for 24 hours;
[0033] Step 2. Keep the temperature at 330°C, roll the first pass in the rolling mill, and the reduction is 15%; keep the temperature at 330°C, roll the second pass after 25 minutes, and the reduction is 25%;
[0034] Step 3. Cool in air to 180°C and keep warm for 30 minutes to make the temperature of the whole billet uniform;
[0035] Step 4. Rolling at 180° C., the reduction in each pass is 10%, rolling 6 passes.
[0036] Obviously, in step 1, the temperature and time of homogenization heat treatment should be determined according to the size of the ingot, which can be 310°C, 320°C, 330°C, 340°C, 350°C, etc., or other temperatures within the range of 310-350°C. Value; time can be 18h, 20h, 22h, 24h, 26h, 28h, 30h, 32h, 34h, 36h, etc., or other values within the range of 18 to 36 hours;
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Abstract
The invention discloses a rolling technology of an Mg-Zn magnesiumalloy sheet. The rolling technology comprises the following steps of: 1 cutting a head part and a tail part and peeling a cast ingot and performing homogenizing treatment on the cast ingot at 310-350 DEG C for 18-36 hours; 2 keeping the temperature be between 310 and 350 DEG C, and rolling for 1-2 passes by using a rolling machine while controlling the rolling reduction quantity for each time being 10-25 percent and the total rolling reduction quantity being less than 50 percent; 3 air-cooling or water-cooling to be at the temperature of 140-190 DEG C and keeping the temperature for 10-60 minutes so that the temperature of the whole blank is uniform; 4 rolling at the temperature of 140-190 DEG C for 1-6 passes while controlling that the rolling reduction quantity for each time being 10-25 percent. According to the technology, the strength of the rolled Mg-Zn alloy is more than 300Mpa, or the elongation rate is more than 20 percent, so that the magnesiumalloy is high in comprehensive mechanical property.
Description
technical field [0001] The invention relates to a rolling process of a magnesium alloy plate, in particular to a rolling process of a Mg-Zn series magnesium alloy. Background technique [0002] The currently developed magnesium alloys mainly include Mg-Al series, Mg-Zn series, Mg-RE series, Mg-Li series, etc. Among them, Mg-Zn series alloys exhibit excellent aging strengthening characteristics, and are easy to process and weld. etc. advantages. [0003] Mg-Zn series alloys have good aging strengthening effect and are an important component series of high-strength magnesium alloys. Commonly added alloying elements are Zr, RE, Cu and Mn. The role of Mn in magnesium alloys is mainly reflected in: improving corrosion resistance, improving casting performance, refining grains, solid solution strengthening, improving mechanical properties, and improving formability during extrusion. The new Mg-Zn-Mn magnesium alloy does not contain Zr, which is cheaper than other Mg-Zn alloys a...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/06
Inventor 戴庆伟张丁非钱申申刘德满喻祖建
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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