What is the framing procedure of straight crease welded steel pipe? Straight crease welded steel pipe is a steel pipe made by hot-rolled or cold-moved steel plate or steel strip. The pipe acquired by straight crease welding on the welding hardware is called straight crease welded pipe. Straight crease welded steel pipe (YB242-63) is welded with. Steel channels with longitudinally parallel steel funnels. Typically separated into metric electric welded steel pipe, winding welded steel pipe, galvanized steel sheet in coil, welded dainty walled pipe, transformer cooling oil pipe, etc. In the accompanying article, I will quickly acquaint you with the welding steel pipe shaping procedure.
Straight crease steel pipe welding procedure can be partitioned into electric opposition welded straight crease steel pipe and submerged circular segment welded straight crease steel pipe, wherein electric obstruction welded straight crease steel pipe is additionally separated into high recurrence welded straight crease steel pipe, medium recurrence welded straight crease steel pipe, low recurrence welded straight crease steel pipe, The submerged curve welded straight crease steel pipe is likewise called twofold sided submerged bend welded straight crease steel pipe or LSAW straight crease steel pipe, and the LSAW is (condensed as LSAW for Longitudinally Submerged Arc Welding). Obstruction welding straight crease steel pipe is additionally called ERW straight crease steel pipe.
The ERW (Electric Resistance Weldin) is condensed as ERW. High-recurrence welded straight crease steel pipe is likewise called ERW straight crease steel pipe. ERW is a general term for electric obstruction welded steel channels. The electric opposition welding (ERW) ERW is the principal letter comparing to English words. Opposition welded steel funnels are separated into two kinds: AC welded steel pipe and DC welded steel pipe. Air conditioning welding is isolated into low recurrence welding, medium recurrence welding, very middle of the road recurrence welding and high recurrence welding as per the recurrence. High-recurrence welding is for the most part utilized for the creation of slight walled steel channels or normal divider thickness steel funnels. High-recurrence welding is partitioned into contact welding and enlistment welding. DC welding is commonly utilized for little width steel channels.
In any case, regardless of which kind of straight crease steel pipe welding process, the principle steps are comparative, as demonstrated as follows:
Board assessment: After the steel plate used to fabricate the enormous breadth submerged curve welded straight crease steel pipe enters the generation line, the entire board ultrasonic investigation is first done;
Processing edge: twofold sided processing the two edges of the steel plate by the edge processing machine to accomplish the required plate width, parallelism of the edge and the state of the section;
Pre-twist: utilize the pre-bowing machine to pre-twist the edge of the board with the goal that the edge of the board has the required arch;
Embellishment: First, half of the pre-bowed steel plate is ventured and stepped on the JCO trim machine, squeezed into a “J” shape, and after that the other portion of the steel plate is additionally twisted, squeezed into a “C” shape, lastly an opening is framed. “O” shape;
Pre-welding: joints of straight crease welded steel pipes in the wake of framing and ceaseless welding by gas protected welding (MAG);
Inward welding: welding by longitudinal multi-wire submerged bend welding (up to four wires) within a straight crease steel pipe;
Outer welding: welding by longitudinal multi-wire submerged circular segment welding outwardly of straight crease submerged bend welded steel pipe;
Ultrasonic examination I: 100% investigation of the internal and external welds of straight crease welded steel funnels and the base metal on the two sides of the weld;
Chamfering: The steel pipe in the wake of passing the review will be prepared at the pipe end to accomplish the required pipe end furrow size;
Ultrasonic investigation II: Ultrasonic assessment is done over and over to check for imperfections that may happen in the wake of rectifying and water weight of straight crease welded steel funnels;
X-beam examination II: X-beam modern TV assessment and cylinder end weld recording of the steel pipe after the extension and hydrostatic test;
Cylinder end attractive molecule review: Perform this investigation to discover the cylinder end deformity; 16. Hostile to consumption and covering: The certified steel pipe is saved and covered by client prerequisites；
X-beam assessment I: 100% X-beam mechanical TV review of inward and outer welds, utilizing picture handling framework to guarantee the affectability of imperfection discovery; 10. Growing measurement: Expanding the full length of the submerged bend welded straight crease steel pipe to improve the dimensional precision of the steel pipe and improve the conveyance of worry in the steel pipe; 11. Water driven test: On the water powered testing machine, the steel pipe after the distance across development is tried individually to guarantee that the steel pipe meets the test weight required by the standard. The machine has programmed recording and capacity functions.