The deformation pipeline of communication , or what is rolling

defining characteristics of rolling

Based on the determination, rolling - a radical change in the diameter of the segment or change the metal plane in different directions.

Distinguish:

• rolling, that is, change the pipe diameter directly during its welding processes,
• rolling during the manufacture of the pipe without seams,
• rolling bends,
• rolling to increase the diameter (beading),
• to reducediameter - rolling.

functions flaring

As has been said, flaring - a process of increasing the diameter of the pipe segment.The main purpose of expanding - connection pipe pieces of communication.With flaring can insert one segment to another.

for expanding use special tools:

• construction cone, which changes in the value of the diameter of greater importance,
• ratchet - a device that gives the possibility to adjust the force,
• expander - Clip (image 1).

Flaring is the most common type of pipe strain.The main thing for controllers - safety and professional use of the necessary tools.Builders of the higher categories only use high-quality equipment, knowing the important value of building material strength, the absence of its tendency to sag and always unexpected and unpleasant breakthroughs.

to use flaring conical funnel inserted into the pipe firmly fixed, gradually increasing its edge.To control the degree of expansion and preservation of the walls using a ratchet ( image 2 ).Involved in the flare can also be an expander, the handle is under compression allows the walls to expand.But the most successful yet established itself tapered (see above.) Device - being screwed into the tube, it increases the diameter of uniformly reducing the wall thickness.It is important to remember that the cone-shaped tool is used only for ductile metal to shape change.

Rolling pipes: basic concepts

Reverse the above process - rolling.Reducing the length of the pipeline diameter.Often use a standard hammer for this process.Quite often apply special vises that deliberately designed to narrow pipe.

Practical application of rolling:

• to change the form of strips, which helps pipe acquire a rounded shape,
• removal and smoothing welds,
• shaping shaped tube.

Rolling to bend pipes

Sometimes deformation tube optionally change the radius to a greater or lesser side.Sometimes, the tube requires a change in its bending: this contributes to a special kind of rolling and special tools with a straightforward name bender.Its working principle is that the pipe is fixed in position, and bending motions performed thanks to the handle.The bending radius is determined by the special regulating roller.

There is a small trick.Before performing the rolling of the pipe, it must be filled with sand.This will keep the tube wall strong.