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Vacuum stirring friction welding device and manufacturing method of metal composite plate

A technology of friction stir welding and friction welding, which is applied in welding equipment, metal processing equipment, metal processing, etc., can solve problems such as poor welding performance, reduced weld mechanical properties, a large number of pores and cracks, etc., to avoid oxidation and ensure the interface Combined strength, the effect of improving joint weld quality

Active Publication Date: 2015-04-01
沈阳科安捷材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For light metals such as aluminum and magnesium alloys, due to their high thermal conductivity, the electron beam welded joints are prone to produce a large number of pores and cracks, and the welding performance is poor
In addition, between the composite interface of aluminum alloy and magnesium alloy, aluminum alloy and pure copper or brass, the electron beam welded joint is also prone to generate a large number of brittle intermetallic compounds, which greatly reduces the mechanical properties of the weld

Method used

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  • Vacuum stirring friction welding device and manufacturing method of metal composite plate
  • Vacuum stirring friction welding device and manufacturing method of metal composite plate
  • Vacuum stirring friction welding device and manufacturing method of metal composite plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this embodiment, the metal plate 27 is two 7075 aluminum alloy plates with a size of 500mm×200mm×30mm, and the rotation centerline of the stirring head of the friction stir welding machine 3 forms an angle of 5° with the Y-axis slide rail 20 .

[0045] The method for preparing a metal composite plate using the vacuum friction stir welding device comprises the following steps:

[0046] Step 1: remove the oxide film and dirt on the surfaces to be combined and the four sides where the welds are located of the two metal plates 27;

[0047] Step 2: Superimpose the surfaces to be compounded of the two metal plates 27 relative to each other, and place them on the lower splint 18 of the workpiece fixture after aligning them around;

[0048] Step 3: Start the lifting and tightening mechanism 19, so that the metal plate 27 to be combined is firmly clamped between the upper splint 17 and the lower splint 18;

[0049] Step 4: Under the driving of the X-axis driving motor 12 and...

Embodiment 2

[0058] In this embodiment, the metal plates 27 are two AZ80 magnesium alloy plates with a size of 500mm×300mm×40mm.

[0059] The composite plate preparation method of AZ80 magnesium alloy plate is the same as embodiment 1, but the vacuum pressure in the vacuum chamber 2 is 0.03Pa; 25mm; the heating temperature of AZ80 magnesium alloy plate composite billet in the resistance furnace is 370°C, and the holding time is 30 minutes; when rolling the AZ80 magnesium alloy plate composite billet, the rolling temperature is 340°C, and the rolling speed is 0.7m / s, the total reduction rate is 60%, and the reduction rate in the first pass is 20%. Finally, a magnesium alloy composite plate with a size of 2500mm×200mm×32mm is obtained. After testing, the Z-direction tensile strength of the composite interface of the composite plate is Reach 280MPa.

Embodiment 3

[0061] In this embodiment, the metal plates 27 are two 15CrMoR high temperature resistant alloy steel plates with a carbon equivalent of 0.65 and a size of 500mm×200mm×40mm.

[0062] The composite plate preparation method of 15CrMoR high temperature resistant alloy steel plate is the same as embodiment 1, but the vacuum pressure in the vacuum chamber 2 is 0.05Pa; 10mm; the heating temperature of 15CrMoR high temperature resistant alloy steel combined billet in the resistance furnace is 1200°C, and the holding time is 60 minutes; when rolling the 15CrMoR high temperature resistant alloy steel combined billet, the rolling temperature is 1150°C, and the rolling speed is 1m / s, the total reduction rate is 50%, and the reduction rate in the first pass is 20%. Finally, a composite steel plate with a size of 1000mm×200mm×40mm is obtained. After testing, the composite interface Z-direction tensile strength of the composite steel plate reaches 530MPa.

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Abstract

The invention discloses a vacuum stirring friction welding device and a manufacturing method of a metal composite plate. The conventional manufacturing way of the metal composite plate is abandoned, and welding of metal materials which are difficult to weld is realized in a high-vacuum environment through a stirring friction welding way. Compared with the conventional manufacturing method of the metal composite plate, the manufacturing method disclosed by the invention has the advantages that welding of welding seams is finished in the vacuum stirring friction welding device, the joint welding line quality is effectively improved in an encapsulation blank forming process, and a combination blank can be firmly combined after heating and rolling, so that oxidation of a compound interface can be effectively avoided, and the interface bonding intensity of the metal composite plate is ensured. According to the vacuum stirring friction welding device disclosed by the invention, three groups of slide block-slide rail mechanisms, three groups of lead screw-nut mechanisms and three groups of driving motors are arranged, so that the adjustment of the position of a stirring friction welding machine before welding and during welding is satisfied; through an electric worm and gear mechanism and a horizontal rotating platform, welding of welding lines on the four sides of the metal plate can be finished through one-time vacuum encapsulation, and manufacturing of the metal composite plate made of metal materials which are difficult to weld is realized.

Description

technical field [0001] The invention belongs to the technical field of metal composite board preparation, and in particular relates to a vacuum friction stir welding device and a method for preparing a metal composite board by using the vacuum friction stir welding device. Background technique [0002] In the 1980s, Japan's Kawasaki Heavy Industries invented the vacuum billet rolling composite technology, which is mainly used to prepare heterogeneous metal composite panels and homogeneous metal composite panels. [0003] However, in the actual application of vacuum billet rolling composite technology to prepare metal composite plates, it is found that the electron beam welding package of the metal plate composite interface still has great limitations, especially for some special difficult-to-weld metal materials, it is still difficult to carry out effective compounding. For example, Cr-Mo heat-resistant alloy extra-thick plates (carbon equivalent ≥ 0.6) and Cr-Mo high-alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/14B23K20/233B23K101/18
CPCB23K20/129B23K20/14B23K20/2333
Inventor 谢广明崔洪波骆宗安王国栋
Owner 沈阳科安捷材料技术有限公司
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