Method for reducing 7XXX series aluminum alloy bar extrusion bubbles

• Main Authors: ZHANG RUI, MAN ZHENGLIANG, LIU HAITAO, REN LIYUAN, QIU PING, YU FENG, GAO XINXIN, SHI YU, XU LEI, YANG RUIQING
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2019
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The invention discloses a method for reducing 7XXX series aluminum alloy bar extrusion bubbles, and relates to a method for reducing aluminum alloy bar extrusion bubbles. The invention aims to solve the problem that the bubbles are very prone to generate and the yield is low in the extrusion process of an existing 7XXX series aluminum alloy bar. The method comprises the following steps that 1, a cast ingot is cleaned; 2, an extrusion tool is cleaned; 3, the heating temperature of an extrusion cylinder and the cast ingot is set; and 4, extruding is carried out. By adopting the method, the yieldof 7XXX series aluminum alloy bars can be improved, the yield is improved to 7%-9%, the product surface quality is greatly improved, and the method is suitable for reducing the bubbles on the surfaces of the 7XXX series aluminum alloy bars. 一种减少7XXX系铝合金棒材挤压气泡的方法，它涉及一种减少铝合金棒材挤压气泡的方法。本发明的目的是要解决现有7XXX系铝合金棒材挤压过程中极易产生气泡和成品率低的问题。方法：一、清理铸锭；二、清理挤压工具；三、设定挤压筒和铸锭的加热温度；四、挤压。采用本发明的方法可以提高7XXX系铝合金棒材的成品率，成品率提高为7％～9％，且产品表面质量有较大幅度提升。本发明适用