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Application of laser welding machine on metal vacuum flask

Vacuum flask is a common item in the home, and it is indispensable at home or on the go, especially in families with babies or in the cold winter. A cup of warm water warms up the entire body.

The stainless steel vacuum flask is made of double-layer stainless steel inside and outside. The inner and outer shells are combined by welding technology, and the air in the interlayer of the inner liner and the outer shell is extracted by vacuum technology to achieve the effect of vacuum insulation. Only in this way, it can ensure residents have a good experience.

Generally speaking, the thinner the cup material is, the long time the cup keep the water warm, but the welded joint is not strong and the cup body is easy to be damaged and deformed, which affects the service life. Therefore, it is recommended to use the metal materials for joint which its soldering interface is not easily damaged. Thereby, the welded joint is dense and high in strength, and the sealing property is absolutely perfect.

The traditional argon arc welding is based on the principle of ordinary arc welding. By using of argon to protect the metal welding material, the high current melt the welding material into a liquid state on the material to be welded to form a molten pool, to achieve metallurgical bonding. In this way, the welding seam of the stainless steel vacuum flask is large and unsightly, and the welded product has a distinct protruding line at the mouth of the cup, which is easy to cause deformation.

Since the welding sealability requirements of the vacuum flask are very demanding, the traditional argon arc welding method is not suitable for welding stainless steel vacuum flasks, so we have to mention the Laser welding machine.

The stainless steel vacuum flask laser welding machine is a kind of Laser welding equipment that couples high-energy laser beam into optical fiber, and after long-distance transmission, collimates into parallel light through a collimating mirror, and then focuses on the workpiece to perform welding, it is non-contact welding. During the process it does not require pressurization of the workpiece and therefore there is no deformation on the product.

Shenzhen Sunlasers qcw laser welding machine can realize beam splitting according to time and energy, perform multi-beam simultaneous processing and flexible transmission non-contact welding for the parts which are difficult to be welded. It has greater flexibility and provide the conditions for more precise welding.


  • 2021-10-08
  • 2021-10-08
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  • 2021-10-06


Contact: Yousheng Fang

Phone: 13751052375

Tel: 0755-27388711

Email: szsunlaser@163.com

Add: Floor 5, Building B, Dingfeng Science and Technology Park, Songgang Tantou 5th Industrial Zone, Baoan District, Shenzhen, China.