High-strength and high-toughness two skew-roll piercing method for 2219 aluminum alloy pipe

A technology for cross-rolling piercing and aluminum alloy tubes, which is applied in metal rolling, metal rolling, metal rolling stands, etc., can solve the problems of limited grain refinement effect, small overall deformation of the billet, and uneven wall thickness of the tube. , to control the wear of the nose of the plug, improve the uniformity of wall thickness, and achieve excellent mechanical properties.
CN111589869AActive Publication Date: 2020-08-28安徽汉正轴承科技有限公司
11 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
安徽汉正轴承科技有限公司
Publication Date
2020-08-28

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a high-strength and high-toughness two skew-roll piercing method for a 2219 aluminum alloy pipe, and relates to the technical field of aluminum alloy pipe machining. The methodcomprises the following steps that skew-roll piercing is conducted by adopting a perforating machine with a double-spiral conical roller; the plug advance is set to be 5-25 mm, the feeding angle of the two skew-roll perforating machine is set to be 6-21 degrees, the rolling angle is set to be 8-15 degrees, the reduction rate is set to be 5%-10%, the rotating speed of the roller is set to be 20-35r / min, and a aluminum alloy cylindrical blank is heated to 440-460 DEG C by adopting a heating furnace; the heated aluminum alloy cylindrical blank is moved to a guide chute of the two skew-roll perforating machine from the heating furnace; and the aluminum alloy cylindrical blank penetrates through a plug under the action of the roller, and the temperature of a rod blank is controlled to be 350-500 DEG C in a rolling process. According to the high-strength and high-toughness two skew-roll piercing method, three-dimensional pressing-twisting composite deformation of the aluminum alloy in thetwo-roller skew-roll piercing process is achieved, and finally the high-strength and high-toughness 2219 aluminum alloy pipe is obtained through the two-roller skew-roll piercing method.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of aluminum alloy pipe processing, in particular to a high-strength and tough two-roll cross-rolling piercing method for a 2219 aluminum alloy pipe. Background technique

[0002] With the rapid development of my country's national economy and science and technology, the preparation technology and product quality of aluminum alloy materials have been greatly improved, which has led to the rapid expansion of the application field of aluminum alloys. In recent years, the demand for high-quality aluminum alloy pipes has become more and more many.

[0003] At present, aluminum alloy tubes with an aspect ratio <2 are often prepared by upsetting + punching; the patent "Upsetting and Punching Combined Process and Die" introduces in detail the preparation of aluminum alloy tubes with a central hole by upsetting + punching. Disc forgings or blanks.

[0004] The aluminum alloy tube with a height-to-diameter ratio o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More