E-mail: iris@tengdimc.com    WhatsApp: +86-13831146634

“ Your Partner in Productivity Improvement ”

You are here: Home » News » Magnetic arc blowing phenomenon in steel pipe welding

Magnetic arc blowing phenomenon in steel pipe welding

Views: 1140     Author: Site Editor     Publish Time: 2022-05-12      Origin: Site

TENGDI

During the welding operation, the phenomenon that the magnetic arc blowing affects the welding process sometimes occurs. The formation of the magnetic arc blow is the result of the presence of residual magnetism in the pipe metal.


Generally, residual magnetism is divided into two types: induction magnetism and process magnetism. Inductive magnetism often occurs in the process of pipe making in factories, such as: metal smelting, electromagnetic cranes for loading and unloading, steel pipes parked in strong magnetic fields, non-destructive inspections completed by magnetization, steel pipes placed close to strong power supply lines, etc.


Process magnetism often occurs in assembly and welding operations and when magnetic grippers, fixtures and pipes are welded with DC power, such as: long-term contact with electrical wires connected to DC power sources, exposed sections of wires or short circuits between welding tongs and pipes, etc.


When welding magnetic steel pipes, there are often problems such as difficulty in arc ignition, destruction of arc combustion stability, arc deviation in the magnetic field, and splashing of liquid metal and slag from the welding pool. In order to stabilize the welding process and improve the quality of the welded joint, the magnetized steel pipe must be demagnetized before welding.

In general, it is difficult to achieve complete demagnetization of welded steel pipes. Therefore, when the residual magnetism is not enough to affect the welding quality, welding is allowed.


Magnetic Free/Manipulator Automatic baler.

We like the exacting demands our customers have. We innovate for this.

After the steel pipe is packed by electromagnetic adsorption, even if the demagnetization method is used, there is no way to completely eliminate the magnetism. It will lead to the phenomenon of magnetic arc blowing during the welding process.

For this reason, we specially create a new type of baler equipment for Mexican customers, which is different from the previous electromagnetic adsorption method.

Adopt a new type of manipulator packaging method.

Currently suitable for 3" to 9" pipe.

Magnetic Free/Robot Automatic Baler

Please contact me for equipment details

Non-magnetic manipulator automatic baler

NEWS SHOW

CONTACT US

  Add : No.298 of Zhonghua North Street, Shijiazhuang City, Hebei P.R. China

  WhatsApp: +86-13831146634
  E-mail: iris@tengdimc.com
  Tel: +86-311-68032581
  Fax: +86-311-68003887
  Skype: iriszhang888
Shijiazhuang Tengdi Machinery Co., LTD.,

Quick Links

Contact Us

Iris Zhang
WhatsApp: +86-13831146634
E-mail: iris@tengdimc.com
Bonnie Zhang
 WhatsApp: +86 18231183764
 E-mail: bonnie@tengdimc.com
Tracy Gui
 WhatsApp: +86 17733291540
 E-mail: tracy@tengdimc.com
 
  Add : No.298 of Zhonghua North Street, Shijiazhuang City, Hebei P.R. China
  Tel: +86-311-68032581
  Fax: +86-311-68003887
  Skype: iriszhang888
Copyright  2022  Shijiazhuang Tengdi Machinery Co., Ltd.