H.F pipe line 140 Pipe Mill

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General Description

Material to be processed:Carbon Steel, Cold Hot Rolled pre slit strip coils of weld able grade with max. 0.2% carbon
Type of Production: * Round Tubes*Squar *Square and Rectangular Hollow Sections
Round Tube Outside Diameter: Min 32 Max 140mm
Square Hollow Section: Min 25x 25 Max 110 x 110 mm
Rectangular Hollow Section: Min 25x 40 Max 90x 130 mm
Tube Thickness: Min 1.2 Max 5.0 mm
Forming Line Speed: Max 70 m/min (Square and Rectangular Hollow Shapes are produced at lower speeds depending on side to wall thickness ratio)
Tube Cut Length: Min 4 Max 12 meter
Length Accuracy: ± 3mm
Drive Motor: DC 110kW +110kW

Line Composion

Q:What is the surface rolling forming machine process?: Due to the rolling surface of metal plastic deformation, so that the surface microstructure of cold hardening and grain refinement, forming a dense fibrous, and the formation of residual stress, hardness and strength, so as to improve the surface wear resistance, corrosion resistance and compliance.

Q:Improvement in rolling forming process: The rolling will produce a hardening layer on the surface of the workpiece. This layer has obvious delamination phenomenon with the internal material, which is easy to cause the surface layer to fall off;

Q:A roll forming machine, rolling out of the length is always not up to a fixed size, not too small, that is, more than that, what is the cause?: Maybe there is something wrong with that roller. It rolls out of the wrong angle and the size will be out of order.

Q:What kind of material and what heat treatment are used for pressing roller (molding, feeding, cutting force, heavy load, heavy load) of sheet steel rolling machine?: Use 40Cr or 20Cr, Cr12.Cr12MoV, quenching and tempering treatment, think of hardness, high point, carburizing, nitriding, and consider adding lubrication device to extend its service life

Q:Process mould for rolling forming process: A movable wire plate, made of the same fixed wire plate, for relative reciprocating motion. Roll forming is the design of different structures on the plate rolling on the workpiece. Roll out all kinds of thread, convex ring, knurling, end chamfering, groove with different width and thickness as well as other required shapes.

Q:What is rolling forming processing?: Rolling process is a kind of pressure finishing, which is a kind of cold plastic characteristic of metal under normal condition.

Q:Material and equipment for roll forming process: The most common type of roll forming is reciprocating flat wire twisting machine. Therefore, for the manufacturers of cold heading machines and screw rolling mills, the design of rolling dies is only a matter of design.

Q:Introduction of roll forming process: Not only threaded fasteners industry applications, automobiles, bicycles and other industrial sectors also use rolling forming process, processing complex shapes of parts.

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