Eliminate Your Doubts About Longitudinal Seam Welding Machine

More the technology is increasing more development techniques are coming in the foreground. One of such amazing technology and high quality machine is the longitudinal seam welding machine. It is mainly used for the high quality and low distortion automatic straight welding, such as metallic cylinders and aligned plates made with stainless steel, iron, aluminum and brass, etc. It is famous for its ability to high welding efficiency and speed, well welding quality and good consistency.

Seamless tubes are generally made in multiple steps starting with hot extrusion to form the tube hollows from billets. The extrusion billet has typically a drilled hole and is pushed through a die and over a mandrel followed by air cooling or water quenching. The gap between the piercing ram and the extrusion die defines the tube wall thickness. The wall thickness uniformity (concentricity) is difficult to control and it is difficult to achieve good surface quality. In general both seamless and welded tubes receive some type of finishing treatment and heat treatment after completion of the manufacturing process.

Material And Nuances Of Manufacturing Process Of The Longitudinal Seam Welding Machine:

• Longitudinal Seam Welding Machine mainly includes two parts: Automatic Machinery Part and Welding Source.
• The Machinery Part is designed as Keyboard Type Copper Pressing Mechanism, to get the regular and stable clamping and cooling effect.
• The automatic machinery part of the machine is adopted PLC controller. DC motor drive has stepless adjustable welding speed and interfaces with any power source.
• Welding source part includes TIG (tungsten inert gas shielded arc welding), MIG (metal inert gas shielded arc welding) MAG (metal active gas arc welding), SAW (submerged arc welding), PAW(plasma arc welding),etc.
• Weld seam back up design has a groove to form a weld on the bottom of a welded plate and provide consistent gas flow to the back of the weld, to assure the stable gas shield and ensure double-side forming in single side welding.

There are companies where you will find limited use of welded tubular products based on the origin of carbon steels or a time before the carbon could be strictly controlled in the analysis of the stainless grade. Seamless tubing can also have defects in the base metal that result from the manufacturing process. These include laps, scratches, tears or laminations. Seamless tubing should consequently also be inspected similar to welded tubing as part of the quality control process. Thus, while buying the machine, one must check the seamless tubing by inspecting with HT and ultrasonic testing (UT).

When you find the right longitudinal seam welding machine, you get various advantages as well. Tubes made of austenitic stainless steels, duplex and special grades are often found in both seamless and welded construction. It does not get heat-affected, has better corrosion resistance, more homogeneous grain structure, no extra weld integrity testing, no problem with weld-seam orientation and no need for pressure de-rating.