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Welding method for stainless steel plates with thickness being smaller than 0.3 mm

A technology of stainless steel plate and welding method, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve the problems of waste of raw materials, increase of product production cost, non-destructive welding, etc., achieve reduction of production cost, reduction of waste of raw materials, good Effect of Yield Strength and Tensile Break Strength

Active Publication Date: 2017-07-11
天津滨海雷克斯激光科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, many industries have turned to other metal materials with better calenderability. The lack of low-thickness and large-width stainless steel plates directly limits the product development and variety of related industries, and also increases the production cost of related products.
However, the traditional laser welding technology cannot complete the non-destructive welding of stainless steel plates with a thickness of less than 0.3mm, and the tensile strength after welding cannot be guaranteed.
In addition, in the production of stainless steel plates as raw materials, a large number of stainless steel scraps will be produced, and these scraps are usually treated as waste materials, which no longer have production value, resulting in the waste of some raw materials

Method used

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  • Welding method for stainless steel plates with thickness being smaller than 0.3 mm
  • Welding method for stainless steel plates with thickness being smaller than 0.3 mm
  • Welding method for stainless steel plates with thickness being smaller than 0.3 mm

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment one: the plate to be welded is a 304 stainless steel plate with a thickness of 0.3mm, and the welding may include the following steps:

[0031] A. Material cutting, cutting the stainless steel plate according to the requirements, making the incision smooth and removing the burrs;

[0032] B. Install and fix the two parts of the plates to be welded on the fixture respectively, align the welding ports of the two plates to be welded, and the gap between the weld ports is 0.06mm;

[0033] C. Use YAG pulse laser welding machine, and use inert gas as the shielding gas during welding. When welding, ensure that the air in the welding part is excluded, so that the laser welding pool is covered by the shielding gas; keep the laser beam irradiated on the two plates. Corresponding to the position of the welding port, the power of the laser beam is 50W, the energy is 2J, the positive defocus is 1mm, the spot diameter on the workpiece is 0.3mm, the frequency is 50HZ, and t...

Embodiment 2

[0036] Embodiment two: the plate to be welded is a 301 stainless steel plate with a thickness of 0.2mm, and the welding may include the following steps:

[0037] A. Material cutting, cutting the stainless steel plate according to the requirements, making the incision smooth and removing the burrs;

[0038] B. Install and fix the two parts of the plates to be welded on the fixture respectively, align the welding ports of the two plates to be welded, and the gap between the weld ports is 0.03mm;

[0039] C. Use YAG pulse laser welding machine, and use inert gas as the shielding gas during welding. When welding, ensure that the air in the welding part is excluded, so that the laser welding pool is covered by the shielding gas; keep the laser beam irradiated on the two plates. Corresponding to the position of the welding port, the power of the laser beam is 60W, the energy is 2J, the positive defocus is 1mm, the spot diameter on the workpiece is 0.5mm, the frequency is 55HZ, and t...

Embodiment 3

[0042] Embodiment three: the plate to be welded is a 316 stainless steel plate with a thickness of 0.1mm, and the welding may include the following steps:

[0043] A. Material cutting, cutting the stainless steel plate according to the requirements, making the incision smooth and removing the burrs;

[0044] B. Install and fix the two parts of the plates to be welded on the fixture respectively, align the welding ports of the two plates to be welded, and the gap between the weld ports is 0.015mm;

[0045] C. Use YAG pulse laser welding machine, and use inert gas as the shielding gas during welding. When welding, ensure that the air in the welding part is excluded, so that the laser welding pool is covered by the shielding gas; keep the laser beam irradiated on the two plates. Corresponding to the position of the welding port, the power of the laser beam is 55W, the energy is 2J, the positive defocus is 1mm, the spot diameter on the workpiece is 0.4mm, the frequency is 55HZ, an...

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Abstract

The invention provides a welding method for stainless steel plates with the thickness being smaller than 0.3 mm. The welding method for the stainless steel plates with the thickness being smaller than 0.3 mm comprises the following steps that the stainless steel plates are cut according to requirements, cut openings are made smooth, and burrs are removed; and the two to-be-welded plates are fixedly mounted on clamps correspondingly, and weld openings of the two to-be-welded plates are aligned; a YAG pulse laser welding machine is adopted, laser beams are kept irradiating the corresponding weld openings of the two plates, and energy is output in the trapezoidal pulse form; and the moving speed of the plates is kept being matched with the frequency and pulse width of laser pulses, so that two adjacent welding spots are made to be in lap joint. By adoption of the welding method for the stainless steel plates with the thickness being smaller than 0.3 mm, small-width stainless steel plates with the same thickness can be combined through laser welding, welding omission, seams, holes, flow and burning damage of a heat affected zone are avoided; the welding spots are continuous, the edges of the welding spots are in lap joint, the overlapping degree of the welding spots is not smaller than half of the diameter of the welding spots, airtightness is guaranteed, and holes are voided; and the strength of welding lines is higher than that of base metal, and high yield strength and tensile breaking strength are achieved.

Description

technical field [0001] The invention relates to the technical field of welding stainless steel plates, in particular to a welding method for stainless steel plates with a thickness less than 0.3mm. Background technique [0002] Thin stainless steel plates are widely used in saw blades, clay boards, putty knives, motors, band saws, metal stamping parts, spring washers / washers, stainless steel covering pads, U-shaped spring pieces, feeler gauges, various springs, and other industries . [0003] Due to the poor calenderability of the stainless steel material itself, when the stainless steel plate is thin to a certain extent, its thickness and width cannot be taken into account at the same time. The width of the stainless steel plate shrinks as its thickness decreases. When the thickness of the stainless steel plate is in Within the range of 0.1mm-0.3mm, the maximum width of the stainless steel plate does not exceed 1m. As a result, many industries have turned to other metal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K26/24B23K26/60
CPCB23K26/24B23K26/60B23P15/00
Inventor 王克会
Owner 天津滨海雷克斯激光科技发展有限公司
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