Tool and method for preventing hard anodic oxidation film layer of large-diameter aluminum alloy revolving support from peeling
A hard anodizing and slewing support technology, which is applied in anodic oxidation, coating, surface reaction electrolytic coating, etc., can solve the problems of easy peeling and blistering of the aluminum alloy slewing support film layer, low product qualification rate, etc., to achieve The effect of preventing peeling phenomenon, low product qualification rate and high hardness
Inactive Publication Date: 2016-03-16
INNER MONGOLIA NORTH HEAVY INDS GROUP
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Problems solved by technology
At present, the conventional diameter of the aluminum alloy slewing support is less than 1000mm. During the hard anodizing process, the parts are directly anodized. Because the parts contain more hydrogen atoms and the stress generated by the parts during the machining process is relatively large, Therefore, after anodic oxidation, the film layer of the aluminum alloy slewing support is prone to peeling and blistering, resulting in a low product qualification rate
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[0013] A tool for preventing the hard anodized film layer of a large-diameter aluminum alloy slewing support from peeling. The beam 1 is fixedly installed with two supporting longitudinal beams 2, and the supporting longitudinal beams 2 are fixed by reinforcing ribs 3. The beam 1 and the longitudinal The beam 2 is connected by screws, and the longitudinal beam 2 and the reinforcing rib 3 are welded into one body.
[0014] A method for preventing the hard anodized film layer of a large-diameter aluminum alloy slewing support from peeling, the method steps are as follows:
[0015] 1) Put the large-diameter aluminum alloy slewing support into the tooling, and put it into the hydrogen removal and stress removal groove;
[0016] 2) The aluminum alloy slewing support is subjected to hydrogen removal and stress removal treatment, treatment temperature: 150℃~180℃; time is 8~10 hours, placed for 24 hours;
[0017] 3) The crimping tooling makes the tooling contact with the conductive bar, makin...
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The invention discloses a method for preventing a hard anodic oxidation film layer of a large-diameter aluminum alloy revolving support from peeling. Dehydrogenation and stress-relief treatment for the aluminum alloy revolving support is carried out, and the temperature is 150 DEG C-180 DEG C; and the time is 8-10 hours, the aluminum alloy revolving support is set aside for 24 hours, and the anodic oxidation temperature is -3 DEG C-10 DEGC. The diameter of the aluminum alloy revolving support is larger than 2 meters; the tool contacts a conducting bar, so that a current is lead into the aluminum alloy revolving support, and currents at all parts of the aluminum alloy revolving support are uniform; and before hard surface treatment of the aluminum alloy revolving support, the dehydrogenation and stress-relief treatment is added, so that a hard anodic oxidation film is formed on the surface of the aluminum alloy, the effects of excellent continuity and high hardness are achieved, the product quality is improved, and the finished product rate is high. During the dehydrogenation and stress-relief process, when the temperature is higher than 180 DEG C, the product strength is reduced, and products are prone to deform; and when the temperature is lower than 150 DEG C, the dehydrogenation and stress-relief effect is low, the production efficiency is low, and the finished product rate is low.
Description
Technical field [0001] The invention relates to a method for preventing the hard anodic oxide film layer of a rotary support from being skinned, in particular to a method for preventing the hard anodic oxide film layer of a large-diameter aluminum alloy rotary support from being skinned. Background technique [0002] Hard anodizing is a process for surface treatment of aluminum alloy parts. Due to the excellent performance of the hard anodizing film layer, it can achieve relatively matching performance with steel parts. At the same time, the mechanical products have The application requirements are extremely strict, so hard anodizing is the best way to treat the surface of aluminum alloy parts in mechanical products. At present, the conventional diameter of aluminum alloy slewing support is less than 1000mm. In the hard anodizing process, the parts are directly anodized. Because the parts contain more hydrogen atoms and the stress generated by the parts during the machining proce...
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IPC IPC(8): C25D11/04
CPCC25D11/04C25D11/005
Inventor 李欧温钢柱王国文胡建军张利峰吴涛庞志辉
Owner INNER MONGOLIA NORTH HEAVY INDS GROUP