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Induction welding equipment and method for thermoplastic resin matrix composite with internal electromagnetic material

A thermoplastic resin and composite material technology, applied in the fields of manufacturing and material forming, can solve the problems of reducing joint strength and fatigue performance, limiting the shape and size of the object to be welded, affecting welding quality, etc., so as to reduce magnetic flux leakage and reduce welding stress. , the effect of reducing energy consumption

Active Publication Date: 2019-02-26
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Induction welding is an effective method for joining thermoplastic resin-based composite materials. However, the materials and induction welding equipment currently used for induction welding have the following problems: First, in terms of the materials to be welded, the induction welding method needs to add implants at the interface of the materials to be welded. Implants will eventually remain in the weld, reducing joint strength and fatigue performance; in terms of induction welding equipment, the traditional induction welding equipment is an external induction coil, and the pressure is not applied in the axial direction, which limits the The shape and size of the object affect the welding quality

Method used

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  • Induction welding equipment and method for thermoplastic resin matrix composite with internal electromagnetic material
  • Induction welding equipment and method for thermoplastic resin matrix composite with internal electromagnetic material

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Embodiment 1

[0029] Embodiment 1: see figure 1 and figure 2 , the thermoplastic resin-based composite material induction welding equipment with built-in electromagnetic material of the present embodiment, comprises induction generator 1, and it is the high-frequency (2-10MHz) power supply that can convert the power supply of 40Hz-70Hz into power generally 1-5KW , the press 3 provides a pre-pressure of 0.45-1.20MPa, which is the pressure head connected to the cylinder or the liquid cylinder; the induction coil 4 and the heat exchanger 2 connected to it, the induction coil 4 can be a single-turn coil, a multi-turn coil, a disk In the form of coil coils, hairpin coils, etc., can be made of copper tube, sheet or machined block, the induction coil is water cooled. Coils can be square, round or rectangular, and the common sizes are 3.2mm, 4.8mm, 6.4mm, 9.5mm. The induction coil 4 is a hollow coil, connected to the heat exchanger 2 for circulating water cooling, the heat insulation plate 9 and...

Embodiment 2

[0030] Example 2: see figure 1 and 2 , an induction welding method based on the induction welding equipment described in the above-mentioned embodiment 1, specifically placing the composite material welded piece 5 on the backing plate 6, and applying a pre-pressure of 0.45-1.20 MPa to the composite material to be welded by the pressurizing device 3 , and then connect the induction generator 1, the induction generator 1 can convert the 40Hz-70Hz power supply into a high-frequency (2-10MHz) power supply device with a power of 1-5KW, and then give the induction coil a high frequency of 2-10MHz, Generate an electromagnetic field capable of heating the built-in conductive magnetic material 11, and sequentially heat and melt the surrounding thermoplastic resin-based composite material through heat conduction. Since the induction coil 4 is a hollow structure, the heat exchanger 2 can be used to feed into it while the induction coil is working. Circulating water, under the cooling ef...

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Abstract

The invention provides induction welding equipment and method for a thermoplastic resin matrix composite with an internal electromagnetic material, belongs to the field of material forming and manufacturing and solves the problems about induction welding materials and equipment. Innovations are as follows: in terms of the material, a lamination forming process is adopted for producing the thermoplastic resin matrix composite, an iron-based ferromagnetic material is added in a lamination process, and a composite welding piece is formed; in terms of the welding equipment, the induction welding equipment is improved, axial application of pressure is realized, the distance with a joint is controlled as required, and efficient induction welding is realized. The welding method comprises the steps as follows: firstly, pre-pressure is applied to a to-be-welded composite by pressurizing equipment, then an induction coil is connected, and an electromagnetic field is produced to heat the internalelectromagnetic material. The induction welding equipment and method have the advantages that the requirement of induction welding for size of a to-be-welded object is reduced, welding quality and efficiency are improved, energy consumption is reduced, the welding equipment is simplified, and one-time investment of the equipment and production cost are reduced.

Description

technical field [0001] The invention relates to a thermoplastic resin-based composite material induction welding device and method, in particular to a thermoplastic resin-based composite material induction welding device and method with built-in electromagnetic materials, belonging to the field of material molding and manufacturing. Background technique [0002] With the continuous development of automobile manufacturing, shipbuilding, aerospace and other fields, the requirements for reducing structural weight, saving economic costs, and ensuring product safety performance are getting higher and higher, which makes the concept of "lightweight and lightweight" come into being, namely While ensuring the structural performance, it is changed from complex to simple, from heavy to light. By using high-strength resin and other materials instead of steel, the weight can be reduced as much as possible under the premise of satisfying structural toughness and fatigue resistance. The ...

Claims

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Application Information

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IPC IPC(8): B29C65/32
CPCB29C65/32
Inventor 周利秦志伟刘杉陈伟光于明润陈铁觉杨海峰冯吉才
Owner HARBIN INST OF TECH AT WEIHAI
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