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Tailored blank laser welding method for aluminum-silicon coating steel

A laser tailor welding and coating technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of increasing thermal deformation of plates, unfavorable for thin plate splicing, increased heat input, etc., and achieves excellent corrosion resistance The effect of sex and wear resistance

Pending Publication Date: 2022-01-25
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, when laser arc hybrid welding is used, the heat input increases, which increases the probability of thermal deformation of the plate, which is not conducive to the splicing of thin plates
And the tensile strength of its welded joints is lower than 1500MPa

Method used

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  • Tailored blank laser welding method for aluminum-silicon coating steel
  • Tailored blank laser welding method for aluminum-silicon coating steel
  • Tailored blank laser welding method for aluminum-silicon coating steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A laser tailor welding method for aluminum-silicon coated steel, comprising the following steps:

[0050] S1. Take two 1.4 mm thick aluminum-silicon-coated steel plates cut by a plate shearing machine. The microstructure of the steel plate is ferrite and pearlite. Use alcohol to clean the oil stains on the two steel plates for purification.

[0051] S2. Splicing and fixing the two steel plates on the welding table through clamps, and splicing them with zero gap.

[0052] S3. Use a fiber laser and set the welding parameters for wire filling: laser power 5500W, laser scanning speed 3.6m / min, laser spot diameter 0.98mm, no protective gas during welding, wire feeding speed 4m / min, wire feeding The angle is 45°.

[0053] S5. The fiber laser emits laser light to irradiate the joint of two pieces of steel, and at the same time, the welding wire is fed to the molten pool by the wire feeding nozzle. The molten welding wire mixes with the molten butt joint area of ​​the two pi...

Embodiment 2

[0057] A laser tailor welding method for aluminum-silicon coated steel, comprising the following steps:

[0058] S1. Take two 1.4 mm thick aluminum-silicon-coated steel plates cut by a plate shearing machine. The microstructure of the steel plate is ferrite and pearlite. Use alcohol to clean the oil stains on the two steel plates for purification.

[0059] S2. Splicing and fixing the two steel plates on the welding table through clamps, and splicing them with zero gap.

[0060] S3. Use a fiber laser and set welding parameters: laser power 5500W, laser scanning speed 4.2m / min, laser spot diameter 0.98mm, no shielding gas during welding. The wire feeding speed is 3m / min, and the wire feeding angle is 45°.

[0061] S5. The fiber laser emits laser light to irradiate the joint of two pieces of steel, and at the same time, the welding wire is fed to the molten pool by the wire feeding nozzle. The molten welding wire mixes with the molten butt joint area of ​​the two pieces of ste...

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Abstract

The invention discloses a tailored blank laser welding method for aluminum-silicon coating steel. The tailored blank laser welding method comprises the following steps that a stainless steel welding wire with the high molybdenum content is selected; two steel plates with aluminum-silicon coatings are taken; butt-joint laser filler wire tailored welding is carried out; and hot stamping is performed after welding. According to the method, the coating does not need to be removed, and splicing of the aluminum-silicon coating steel can be achieved only by filling the welding wires. After hot stamping, a welding head is consistent with a base material in toughness, so that the product quality and the production efficiency are improved.

Description

technical field [0001] The invention relates to a laser tailor welding method for aluminum-silicon coated steel, which is used for tailor-welding aluminum-silicon coated steel and hot stamping after welding, and can obtain welded joints consistent with the tensile strength and elongation of the base metal, and has good corrosion resistance and wear resistance. Background technique [0002] With the continuous increase of the number of cars, a series of problems such as energy shortage, environmental pollution and greenhouse effect have become increasingly prominent. The theme of people advocating green environmental protection, energy saving and emission reduction is becoming more and more intense, and at the same time, higher requirements are put forward for the safety and energy consumption of automobiles. Vehicle design should not only ensure the safety and reliability of vehicles, but also save energy and reduce emissions. The most important way to achieve these two go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/211B23K26/60B23K26/70
CPCB23K26/211B23K26/60B23K26/70B23K26/21B23K26/08
Inventor 许伟杨上陆陶武
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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