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A kind of induction brazing equipment and copper pipe fast induction brazing process method

A technology of induction brazing equipment and process methods, applied in welding equipment, metal processing equipment, applications, etc., can solve problems such as unsatisfactory closed-loop pipeline welding, welding bumps, uneven welding temperature, etc.

Active Publication Date: 2020-10-23
CHINA NAT ELECTRIC APP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, part of the welding of copper pipes on refrigeration pipe fittings has adopted induction welding, and the welding effect is good, but the induction coil used is mainly ring-shaped, and the scope of application is narrow, especially it cannot meet the welding of closed-loop pipelines, so its application is also limited. subject to certain restrictions, so the design of the open induction coil has become a research hotspot
However, due to the uneven distribution of the induction magnetic lines of the open induction coil, the welding temperature will be uneven, especially for some slightly thicker copper tubes, which are prone to defects such as uneven solder distribution, welding bumps, and burn-through.

Method used

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  • A kind of induction brazing equipment and copper pipe fast induction brazing process method
  • A kind of induction brazing equipment and copper pipe fast induction brazing process method

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Experimental program
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Embodiment approach

[0036] As a preferred embodiment of the present invention: the size of the rectangular parallelepiped ferrite 2 is such that: the fifth straight section 109 and the sixth straight section 111 and the rectangular parallelepiped ferrite 2 fixed between them are equal in length and diameter. The eighth straight line segment 115 and the seventh straight line segment 113 are flush with the rectangular parallelepiped ferrite 2 fixed between them in the length direction and the diameter direction.

[0037] In addition, in order to facilitate the electrification of the induction coil 1, the induction coil 1 can also add a first extension section 116 and a second extension section 117, the first extension section 116 is connected with the first straight section 101, the second extension section 117 is connected with the eighth straight section 115 , so that the high-frequency AC power supply can conveniently load AC power to the induction coil 1 through the first extension section 116 a...

Embodiment 1

[0052] This embodiment is an induction welding process for a copper tube with a diameter of 8 mm. The thickness of the copper tube is 0.8 mm. The inner diameter of the copper tube at the flared end is 8.2 mm. The depth of the flared hole is 10 mm. The opening size of the induction coil is 12 mm. Phosphorus (BCU93P) solder ring. The welding current program is 55A, 2S, 40A, 1S, the total welding time is 3S, and the welding effect is good.

Embodiment 2

[0054] This embodiment is an induction welding process for a copper tube with a diameter of 12.7 mm. The thickness of the copper tube is 0.8 mm. The inner diameter of the copper tube at the flaring end is 12.9 mm. The depth of the flare is 10 mm. The opening size of the induction coil is 16.7 mm. Ring Copper Phosphorus (BCU93P) welding ring. The welding current program is 55A, 2.5S, 40A, 1.5S, the total welding time is 4S, and the welding effect is good.

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Abstract

The invention discloses induction brazing equipment and a copper pipe rapid induction brazing process method. The induction brazing equipment is provided with an induction coil and two cuboid-shaped ferrites of the same specification, and a U-shaped open type induction coil is used as the induction coil. The copper pipe rapid induction brazing process method comprises the steps that S1, the induction brazing equipment is manufactured; S2, two to-be-welded copper pipes are assembled; and S3, the induction brazing equipment manufactured in the S1 is placed to welding positions of the two to-be-welded copper pipes which are assembled in the S2, and alternating currents are loaded to the two ends of the induction coil of the induction brazing equipment so that the two to-be-welded copper pipescan be welded. The induction brazing equipment has the advantage of high welding efficiency on the basis that the induction brazing equipment can adapt to induction brazing of copper pipes of different structures and sizes, and the copper pipe rapid induction brazing process method has the advantages of being good and stable in welding quality and high in welding speed.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to induction brazing equipment and a copper tube rapid induction brazing process using the equipment. Background technique [0002] Copper tubes have excellent heat conduction, heat dissipation and corrosion resistance, and have the characteristics of high temperature resistance and high pressure resistance, and are used in refrigeration industries such as household appliances. At present, copper pipes are mainly welded by flame brazing. Flame brazing has the advantages of high welding efficiency and convenient operation, but at the same time, flame welding also brings disadvantages such as environmental pollution and poor working environment. With the gradual enhancement of people's awareness of environmental protection, the society has higher and higher requirements for the clean production of enterprises, and enterprises are also constantly exploring the welding process that ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/002B23K3/047B23K101/06
Inventor 万超王玲
Owner CHINA NAT ELECTRIC APP RES INST