6XXX series aluminum alloy bar extrusion and online quenching method

• Main Authors: MAN ZHENGLIANG, MA YUE, GAO BAOTING, ZHANG YANFEI, YU FENG, WANG QIANG, XIANG BOWEN, YANG RUIQING
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2019
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The invention discloses a 6XXX series aluminum alloy bar extrusion and online quenching method, and relates to the field of aluminum alloy bar extrusion and online quenching methods. The method aims to solve the technical problems that an existing method is unstable in 6XXX series aluminum alloy bar online quenching performance and low in yield. The method comprises the steps that 1, an ingot is cleaned; 2, an extrusion tool is cleaned; 3, the temperature of an extrusion cylinder and the ingot is set; 4, extrusion is conducted, wherein the extrusion speed is controlled to be larger than 1.8 m/min under the condition that the surface of a product is free of peeling, bubbles and cracks; and 5, quenching is conducted, wherein a guide passage is installed, the temperature of an extruded bar iscontrolled to be higher than 480 DEG C before the bar enters a quenching area, the distance between a bar guide-out port and the quenching area is smaller than or equal to 1 m, the bar is guided intothe quenching area, the t