A fixture for laser penetration welding of T-joints and its welding method

A welding method and penetration welding technology, which can be used in laser welding equipment, welding equipment, manufacturing tools, etc., can solve problems such as difficulties, and achieve the effects of low cost, good welding seam formation, and improved welding quality.

Inactive Publication Date: 2016-08-24
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the purpose of the present invention is to overcome the difficulties and problems existing in the welding and clamping of steel plate T-joints, meet the high requirements of weldment assembly, and provide an accurate and stable laser penetration welding for steel plate T-joints. fixture

Method used

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  • A fixture for laser penetration welding of T-joints and its welding method
  • A fixture for laser penetration welding of T-joints and its welding method
  • A fixture for laser penetration welding of T-joints and its welding method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] as attached Figure 2-8 As shown, a fixture for laser penetration welding of T-joints, including: a first pressure plate 1 and a second pressure plate 2 in the shape of a bar with the same size and length, and a first bracket 3 and a second bracket 4 with a door frame shape in section , a rectangular plate base 5, washers 6 and bolts 7, the two ends of the first press plate 1 and the second press plate 2 are respectively provided with an oval hole with a long diameter perpendicular to the long side of the press plate, the first press plate 1 and the second press plate 2 are mutually Parallel, isolated, and fixed on both sides of the center line of the base 5 by the washer 6 and the bolt 7 respectively, the first bracket 3 and the second bracket 4 are respectively arranged on the sides of the first pressure plate 1 and the second pressure plate 2 The outer side is fixed on the base 5 by washers 6 and bolts 7 . The upper frames of the first bracket 3 and the second brack...

Embodiment 2

[0041] As the preferred technical solution of the present invention, according to the laser penetration welding welding parameter debugging of T-shaped joints of steel plates, the parameters are welded according to the following process parameters, the laser output power is 4500W, and the welding speed is 1.8m / min , the protective gas flow rate is 25l / min, and the defocus is -5mm. The T-shaped joint welded with the process parameters of this embodiment has better weld penetration and more beautiful shape. All the other structures and advantages are identical to Embodiment 1.

Embodiment 3

[0043] As the preferred technical solution of the present invention, according to the laser penetration welding welding parameter debugging of the T-shaped joint of the steel plate, the described parameters are welded according to the following process parameters, the laser output power is 4500W, and the welding speed is 2.1m / min , protective gas flow rate 25l / min, defocusing amount 0mm. Using the process parameters of this embodiment to weld the T-joint, the speed is fast, the time of the weld seam in the high temperature zone is shortened, and the solidification and forming are faster, so it is not easy to be oxidized. All the other structures and advantages are identical to Embodiment 1.

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Abstract

The invention discloses a clamp used for laser full-penetration welding of a T-shaped joint. The clamp comprises a baseplate, two supports and two pressing plates, the baseplate is a rectangular plate, the pressing plates are strip-shaped plates identical in size and length, an oval hole with long diameter perpendicular to long side of the corresponding pressing plate is formed in each of two ends of each pressing plate, the pressing plates are mounted on two sides of a center line of the baseplate in a parallelly spaced manner by adopting bolts and gaskets, section of each support is in the shape of a door frame, the supports are fixedly mounted on the baseplate on the outer sides of the pressing plates respectively, two threaded holes with axis perpendicular to the baseplate are formed in each support in a framed manner, and a bolt which can be adjusted longitudinally is disposed in each threaded hole. By the clamp, the T-shaped joint can be positioned and fixed quickly, assembly operation difficulty of the T-shaped joint is lowered, and laser welding quality and efficiency of the T-shaped joint are improved. The invention further discloses a method using the clamp to weld the T-shaped joint.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a welding fixture and method, and more particularly relates to a fixture for laser penetration welding of T-shaped joints and a welding method thereof. Background technique [0002] The laser welding lightweight sandwich structure is formed by laser welding the upper and lower bottom plates and core plates. The joint form is mainly T-shaped lap joint, which has the advantages of laser deep penetration welding. It has great potential in industries such as aerospace, shipbuilding, and high-speed trains. Wide range of applications. It is a technical problem in the field of welding that the fillet weld of the traditional T-joint cannot be welded. Laser penetration welding requires high assembly accuracy of the weldment, and the particularity and complexity of the T-joint of the sandwich structure brings great difficulties to the welding and clamping of the T-joint of the steel plate....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/70B23K26/21B23K26/60
CPCB23K26/20
Inventor 李瑞峰张峰李港志金亚娟郑启池
Owner JIANGSU UNIV OF SCI & TECH
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