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The main defects on the surface of extrusion aluminum 6063 and their elimination methods
Release time:
2022-12-19 10:51
Source:
(1) Causes:
The main reason is that the surface of the extrusion aluminum 6063 ingot is stained with oil and dust, or the working part of the front end of the extrusion cylinder is greatly worn, resulting in the accumulation of dirty metal around the elastic area of the front end.
When squeezed, it is formed by being drawn into the surroundings of the product along the sliding surface of the elastic zone, and generally appears at the tail end of the product, and may also appear at the middle end or even the front end of the product in severe cases.
There are also unreasonable arrangement of the die holes, too close to the inner wall of the extrusion cylinder, excessive wear or deformation of the extrusion cylinder and the extrusion pad, etc. may also cause layering.
(2) Elimination method:
1. Improve the cleanliness of the ingot surface. Reduce the surface roughness of the backlog cylinder and mold, and replace the severely worn extrusion cylinder and extrusion pad in time.
2. Improve the mold design, and the position of the mold hole should be as far away from the edge of the extrusion cylinder as possible.
3. Reduce the difference between the diameter of the extrusion pad and the inner diameter of the extrusion cylinder, and reduce the residual dirty metal in the lining of the extrusion cylinder.
4. Keep the inner lining of the extrusion aluminum 6063 extrusion cylinder intact, or use gaskets to clean the inner lining in time. After cutting the residual material, it should be cleaned up without lubricating oil.
extrusion,aluminum,6063
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Tel: 86-512-53640771
Fax: 86-512-53640769
E-mail：sales@alumag.com.cn(Domestic sales)
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Web:http://www.alumag.com.cn/
Address: No. 9, Xingang East Road, Liujiagang, Fuqiao Town, Taicang City, Jiangsu Province, China