Method of cooling weld in steel piping and apparatus therefor

A method for cooling a weld in steel piping during butt welding with cooling of the inside comprises, after joining of pipe ends by a root pass on the ...

United States Patent (19) (11) 4,223,197 - Googleapis.com

PIPING AND APPARATUS THEREFOR. 44-64. (75 ... A method for cooling a weld in steel piping during butt ... An apparatus for cooling a weld in a steel pipe.

Yositeru Chiba Inventions, Patents and Patent Applications - Justia ...

Method of cooling weld in steel piping and apparatus therefor. Patent number: 4223197. Abstract: A method for cooling a weld in steel piping during butt welding ...

US4142713A - Method of heat-treatment of welded pipe and ...

Method of heat-treatment of welded pipe and apparatus therefor ... cooling device 4 for continuous ... In said apparatus, steel pipe 11 which has been welded ...

Water Cooling Technologies for Steel Pipe Production Processes

drel mill method, which is capable of producing weld-free seamless steel ... concerning steel pipe cooling equipment in recent years (1990–. 2012) ...

Laser-welded steel pipe and method therefor - MyScienceWork

Laser-welded steel pipe and method therefor: A laser welded steel pipe having a weld zone containing a steel pipe containing 0.01 to 0.2 weight % C, ...

cooling stainless with water - American Welding Society

Keep in mind the water quenching issue and its 'deleterious or not' effects pertaining to hardening isn't an issue of stainless steel, though ...

Welding of low temperature steel pipe

Therefore, welding current, arc voltage and welding speed should be strictly controlled. Low temperature steel pipe has a small hardening ...

Best method of cooling steel after welding? 2 - Eng-Tips

ietech; Running cold water over a weld region is never good practice. The rapid cooling could result in harmful thermal gradients.

The Basics of Pipe Welding: A Comprehensive Guide

They are responsible for welding various types of pipes, including steel, copper, and plastic, using different welding techniques, such as arc welding, gas ...

Hot Tap Evaluations and Practical Guidance for In-Service Repair ...

To limit the number of possible defects, gas tungsten arc welding (GTAW) is often specified over other arc welding processes due to its high- ...

Effect of Cooling Lubricants on Welded Steel Pipe Quality - Gale

In machines for this there is mainly use of a water-mixed emulsion. During pipe welding at high-frequency currents (HFC) and for reliable impeder operation, it ...

Welding Equipment: Techniques, Technologies and ... - Red-D-Arc

It can be performed on cast iron, copper, and nickel alloys, stainless steel, carbon steel, and manganese steel. One key to successful ...

Heating method of stainless steel welded pipe

The heating modes of post-welding heat treatment of stainless steel welded pipe mainly include gas heating, resistance heating and induction heating.

Welding on High Yield Pipe - Lincoln Electric

These include shielded metal arc welding (SMAW), self shielded flux cored arc welding (FCAW-S), and gas metal arc welding (GMAW). With GMAW transfer mode must ...

Post Weld Heat Treatment Explored and Explained - WelderDestiny

Post Weld Heat Treatment (PWHT) Set-Up on Pipe: The white is the ceramic blanket insulation to keep the heat in. The thin wires are the thermocouple attachments ...

Heat Transfer Modeling of an Annular On-Line Spray Water Cooling ...

On-line spray water cooling (OSWC) of electric-resistance-welded (ERW) steel pipes can replace the conventional off-line heat treatment process and become ...

Stabilization Heat Treatment of Austenitic Stainless Steel Weldments

Sensitization is the condition where chromium carbide precipitation at the grain boundaries (from a heating process, e.g., welding, hot forming, hot bending, ...

WELDING OF STAINLESS STEELS AND OTHER JOINING METHODS

In the fabrication of stainless steel products, components, or equipment, manufacturers employ welding as the principal joining method. Stainless steels are ...

ERW pipe weld seam online heat treatment process and quality ...

The cooling medium of the normalizing process specification is still air, but since the online weld induction heat treatment is performed on the production line ...