Novel method of laser transmission welding connection

A new technology of laser transmission welding, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of destroying the quality of the weld seam, and the strength cannot meet the ideal requirements, so as to improve the connection strength and reliable connection strength , The effect of local connection firmness

Inactive Publication Date: 2013-04-24
JIANGSU UNIV
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Problems solved by technology

The document "Experimental Research on the Laser Transmission Connection of PET Film and 316L Stainless Steel Sheet" pointed out that a chemical reaction occurred on the contact surface of the metal and polymer weld, and the metal and polymer surfaces were connected by chemical bonding, but their strength could not meet the ideal requirements. , if considering its process research, t

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  • Novel method of laser transmission welding connection
  • Novel method of laser transmission welding connection
  • Novel method of laser transmission welding connection

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Embodiment Construction

[0018] Below in conjunction with specific embodiment the present invention is further described, weld transparent nylon and 304 stainless steel metals with the present invention.

[0019] Welding preparation: The selected welding transparent light-transmitting material nylon (12) has a size of 10x10x2mm, and the light-absorbing material 304 stainless steel 14 has a size of 10x10x0.6mm. The laser uses a continuous energy semiconductor laser generator 7 with a maximum power of 130w and a wavelength of .

[0020] Surface treatment of the weldment: paste the sample 304 stainless steel 14 with an anti-corrosion mask on the area that does not need to be corroded, so that the contact area between the metal and the metal corrosive liquid is about 20mm 2 About, put it into the prepared 5%-15% ferric chloride solution, the temperature is about 26±1℃, take it out after 2-5 hours, it can form a diameter of about 46.60um-1103.53um, a depth of about For pits from 134.9um to 582.80um, use...

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Abstract

The utility model discloses a novel method of laser transmission welding connection, and belongs to the technical field of laser transmission welding, in particular to a laser transmission welding of mental and polymer. According to the novel method of laser transmission welding connection, chemical corrosion is performed towards the surface of metal material which will be welded so that concave pits can be formed in the surface and the appearance and shape of the surface will be changed. The surface corroded material is as the low layer light-suction material, and the polymer is as the upper layer light-suction material. The metal and the polymer are connected in overlapped mode. The metal and the polymer are clamped by restraint layer and are imposed with welding pressure. Semiconductor laser generator conducts laser transmission welding so that surface temperature can reach the melting point of the upper layer polymer rapidly and the surface melts. The molten polymer flows into the concave pits under the influence of welding pressure and an engaged interface which is in riveted structure is formed on the welding seam, accordingly the connection strength of laser transmission welding is improved. Besides, the novel method of laser transmission welding connection can be widely applied in the field of laser transmission welding requiring high connection strength.

Description

technical field [0001] The invention belongs to the technical field of laser transmission welding, in particular to a novel laser transmission welding method for metals and polymers. Chemical corrosion is used to form pits on the metal surface. During laser transmission welding, the molten polymer flows into the pits under the action of welding pressure, forming a riveting interface at the weld to increase the connection between the metal and the polymer. The contact area makes the metal and the polymer better combined with each other, so that the strength of the laser transmission welding connection can be improved. Background technique [0002] At present, laser transmission welding technology, as a high-tech processing technology with distinctive characteristics such as fast, accurate, non-contact, and small heat-affected zone, has been widely used in the field of welding processing of polymers and polymers, polymers and metals, and other materials of the same and differe...

Claims

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Application Information

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IPC IPC(8): B23K26/20B23K26/18B23K26/42B23K26/21B23K26/70
Inventor 刘会霞赵振关陈浩黄创严长高阳阳蒋涛薛国春李品王霄
Owner JIANGSU UNIV
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