The utility and appearance of carbon steel elbow

The utility and appearance of carbon steel elbow

Carbon steel elbow In piping systems, elbows are pipe fittings that change the direction of piping.According to the Angle is divided into 45 degrees 90 degrees 180 degrees three commonly used, in addition, according to the needs of the project or user also includes 60 degrees and other abnormal Angle elbow, elbow material has cast iron, stainless steel, alloy steel, carbon steel, colored books and plastic.The connection mode of carbon steel elbow in use: direct welding (common way) flange connection, hot melt connection, electric fusion connection, threaded connection and socket connection, etc.According to the production process, it can be divided into: welding elbow, stamping elbow, push elbow, casting elbow, butt welding elbow, etc.Other names: 90 degree bend, right Angle bend, etc.

The appearance of carbon steel elbow pipe is divided into: generally to the naked eye investigation, through the external view, can be found welding elbow pipe weld appearance defects, sometimes with 5-20 times the magnifying glass to investigate, such as bite edge, pores, welding nodules, appearance cracks, slag inclusion and welding through.Welding joint detector or sample can also be used to measure the external dimension of the welding seam.

The company produces carbon steel elbow, tee, pipe cap, size head, elbow and so on.

When producing carbon steel elbows, choose the specified steel pipe.Through theoretical calculation, the general diameter expansion rate is between 33%-35%, and pushed back.Short radius 219mm general diameter expansion rate is 50% after the selection of raw materials, according to the specifications of the elbow, considering the radius of curvature such as: 90 degrees of elbow, through the curvature can be calculated under the long material processing 90 degrees of elbow, can be calculated through theoretical calculation, and then the length of the length as the ruler to cut off, and finally the material is hot push system.Push machine you may have seen, the actual horizontal simple, it is a horn - shaped core head or mandrel.

Pushing process is a process of expanding with bending, behind the support, the feeding pipe segment into the mandrel, behind a arch frame will be fixed mandrel, there is a car in the middle, some of the car through hydraulic transmission, some through mechanical transmission that is, screw transmission, and then forward the car.The trolley pushes the pipe forward along the new version, and the mandlet goes forward. There is an induction ring on the outside of the new version. Heate the pipe, and then the trolley pushes the pipe down to finish the processing of one.A die is actually a press and requires a set of dies.Two semicircular arcs, one above and one below.After the outside diameter reached the size requirements of the finished product, the wall thickness is controlled by the wall thickness of the incoming material.The wall thickness tolerances of the elbow and pipe are the same and should not change normally during the pushing process.The manufacturing process of carbon steel elbow is briefly introduced.

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