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A kind of arc, laser, magnetic field multi-energy field coupling manufacturing process method

A manufacturing process and energy field technology, applied in the field of arc, laser, magnetic field multi-field coupling manufacturing process, can solve the problems of small scope of application, low energy utilization rate, high laser price, etc., to achieve the effect of improving comprehensive performance

Active Publication Date: 2019-10-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with traditional processing methods, it has outstanding advantages such as high energy density focusing, high precision, high quality, energy saving and environmental protection, but there are also some limitations
For example, lasers are expensive, and the cost of laser manufacturing is much higher than that of electric arc manufacturing; laser manufacturing has high precision, but it is inefficient when processing large-sized workpieces
[0004] In order to solve the problems of high laser manufacturing cost, low energy utilization rate, and small application range, the combination of laser and arc is proposed. The laser-arc composite heat source not only combines the advantages of the above two manufacturing methods, but also makes up for their respective shortcomings. Also creates an additional energy synergy

Method used

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  • A kind of arc, laser, magnetic field multi-energy field coupling manufacturing process method
  • A kind of arc, laser, magnetic field multi-energy field coupling manufacturing process method
  • A kind of arc, laser, magnetic field multi-energy field coupling manufacturing process method

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Experimental program
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Effect test

Embodiment 1

[0055] Embodiment 1 is a welded workpiece, specifically, there are dissimilar material welding and T-shaped welds. Such as figure 2 shown, where figure 2 Area I has a large groove, and is not a functional area of ​​the workpiece, and the material is steel. Such as figure 2 As shown in area II, this area is the middle part of the workpiece, which is characterized by good connection performance with the steel plate, and the material is aluminum. Such as figure 2 As shown in area III, it is characterized by T-shaped welds. To weld the above workpiece, the specific method is as follows:

[0056] Welding process method selection: for figure 2 In area I, due to the large groove, the efficiency of laser welding is low and the cost is high, which is inconsistent with the actual situation, and the welding in this area requires low precision. In order to improve efficiency and reduce costs, arc welding method is selected. for figure 2 Area II belongs to the welding of diss...

Embodiment 2

[0059] Embodiment 2 is an additive manufacturing workpiece, which is characterized in that the structure of the workpiece is complex, and the dimensional accuracy varies greatly from bottom to top. Such as image 3 shown, where image 3 As shown in area I, this area is the base of the workpiece, which is characterized by having a sufficiently large wall thickness and size to ensure the stability of the entire workpiece during application. Such as image 3 As shown in area II, this area is the middle part of the workpiece, which is characterized by good mechanical properties, and the wall thickness and size show a decreasing trend from bottom to top, ensuring the usability of the workpiece and a smooth transition from bottom to top. Such as image 3 As shown in area III, it is the working area of ​​the entire workpiece, which is characterized by small wall thickness and size, high precision, and excellent mechanical properties. To manufacture the workpiece as described abov...

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Abstract

The invention discloses a coupling manufacturing technological method for multi-energy fields including electric arc, laser and a magnetic field. According to the method, characteristic variable functions phi (phi A, phi L and phi M) are adopted to represent distribution coefficients of the three energy fields correspondingly, and characteristic variable functions E (EA, EL and EM) represent input energy of the three energy fields, wherein the phi A, phi L and phi M are the electric arc input energy ratio, the laser input energy ratio and the magnetic-field input energy ratio, phi A plus phi L equals one, and phi M equals zero or one; according to the requirements of a welding energy field and an additive manufacturing energy field, one of diversified energy-field coupling modes including electric arc, laser, electric arc-laser, electric arc-magnetic field, laser-magnetic field and electric arc-laser-magnetic field is selected to be conducted; before a manufacturing technique of the method is implemented, through evaluation of requirements for accuracy, efficiency, cost, the quality and the like, a reasonable energy-field distribution ratio is selected, so that the production process is optimized; and according to coupling of the three physical fields, the multi-field, high-accuracy, high-efficiency and high-quality manufacturing technique is achieved.

Description

technical field [0001] The invention belongs to the technical field of welding and additive manufacturing, and in particular refers to a multi-field coupling manufacturing process of electric arc, laser and magnetic field. Background technique [0002] Arc manufacturing is a traditional manufacturing process, and its development has been very mature. Arc manufacturing has the advantages of high efficiency, high quality, low cost, and wide application range, and is still the mainstream technology in the modern manufacturing industry. In recent years, in the context of high-efficiency and high-quality manufacturing, many problems in arc manufacturing have limited its application in the manufacturing industry. For example, in arc welding production, the large amount of arc heat input leads to a large welding heat-affected zone; conventional arc welding has a small depth-to-width ratio, which is likely to cause defects such as incomplete penetration and incomplete fusion; the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/02
Inventor 占小红周俊杰齐超琪张琪
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS