Box structure precision manufacturing method based on friction stir welding
A box structure and friction stir technology, which is applied in the field of mechanical processing, can solve problems such as easy porosity, high residual stress, and large deformation, and achieve the effect of no defects in the weld seam, reducing welding difficulty, and easy welding operation
Inactive Publication Date: 2020-01-10
SHENYANG AEROSPACE UNIVERSITY
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Problems solved by technology
[0005] Aiming at the deficiencies in the existing VPX chassis manufacturing methods, the present invention proposes a precision manufacturing method for the box structure based on friction stir welding. This method not only improves the connection strength of the box structure, but also effectively solves the problem that the traditional welding method is prone to Problems such as air holes, cracks, large deformation, and high residual stress, while improving the overall performance of the connection joints, ensure the manufacturing accuracy of the box structure, thereby ensuring the safety and reliability of the box structure in service
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[0029] In order to understand the present invention more clearly, the present invention will be further described in detail in conjunction with the accompanying drawings.
[0030] Refer below Figure 1-5 A precision manufacturing method for a box structure based on friction stir welding provided according to an embodiment of the present invention will be described.
[0031] The present invention is aimed at manufacturing the aerospace VPX case structure, and the case material may be one or more of aluminum, aluminum alloy, magnesium and magnesium alloy. Such as figure 1 As shown, the box structure includes an upper cover plate 1, a lower cover plate 3, a left side plate 2, a right side plate 4 and a central structure 5, and the two ends of the central structure are respectively connected to the left side plate 2 and the right side plate 4. ; The plate thickness of each part in the box structure is 1 mm to 50 mm. figure 1 The middle ellipse represents the position of the T-s...
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Abstract
The invention discloses a box structure precision manufacturing method based on friction stir welding. The method comprises the following four steps: step one, a box structure is subjected to joint interface division, and a welding seam is formed in the position where the friction stir welding is easy to implement, and a joint interface between parts in the box structure adopts a connector form ofbutt joint and / or overlap joint; step two, the parts of the box structure are pre-machined with a machining method, and required welding margin is reserved; step three, the parts of the box structureare welded together with a friction stir welding technology; and step four, a welded box is subjected to machining and destressing treatment, and therefore, precision manufacturing of the box structure is realized. The method is mainly applied to the precision manufacturing of the box structure in the industries such as electronic engineering, aviation, aerospace, rail trains, ships and the like.
Description
technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a precision manufacturing method of a box structure based on friction stir welding. Background technique [0002] As the main body of electronic components, VPX chassis has been widely used in industrial fields such as electronics, aviation, aerospace, rail trains, and ships. However, different fields have different performance requirements for VPX chassis. For example, in the aerospace field, there are extremely strict requirements for the electrical performance, thermal conductivity, weight and dimensional accuracy of the VPX box structure. As long as one aspect fails to meet the requirements, serious It affects the normal use of the cabinet, therefore, the manufacture of the VPX cabinet is extremely difficult. [0003] The main structure of aerospace VPX chassis is generally composed of upper cover plate, lower cover plate, left side plate, right sid...
Claims
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IPC IPC(8): B23K20/12B23K20/24
CPCB23K20/122B23K20/129B23K20/24
Inventor 朱智刘成财杨楠王治慧金强王鑫杨刘钦玉葛志宝
Owner SHENYANG AEROSPACE UNIVERSITY