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Bending of pipes

Adaptations for bending of pipes

It is clear that the most optimum variant - when all communications pass in your house on a straight line, are not crossed anywhere and have only right angles. In this case all connections are carried out on a carving by standard taps and corners. But it - only an ideal to which it is necessary to aspire at a lay-out of communications. In practice not to do without bending of pipes under that or other corner. We will result descriptions of several adaptations.

Most simple from them - a plate with apertures. Into them insert probes so that to receive the necessary radius of a bend of a pipe. Even easier - to bend a pipe in a vice (to clamp it better not between sponges which it can slip out, and under them).

It is possible to make also stationary trubogibnoe the device. Three-four buckets of a concrete mix and some pieces a rail or scraps of pipes of the big diameter will be necessary for you. Having cemented these scraps in vertical position in 40-50 mm from each other, you receive trubogib on own site. To delay neiz-bezhnuju "the device" deformation, bent pipes it is necessary to have as much as possible close to the basis.

Three above described adaptations are simple and accessible in manufacturing, but have an essential lack - as the lever the pipe serves in all cases. But how to be, if the free piece of a bent pipe is too short to provide necessary effort? From overlays, as well as with keys, it is necessary to refuse - "a pure" bend in one plane most likely it will not turn out, only a pipe will spoil.

Machine tool Volnova for a bend of pipes: 1 - a plate; 2 - a bent pipe; 3 - a collar; 4 - a roller-template; 5 - a mobile roller; 6 - skoba; 7 – the handle Is one more adaptation deprived of lacks first three. It is a question of so-called machine tool Volnova (drawing see). The machine tool has two rollers and fastens to a massive metal workbench bolts with nuts. Such adaptation allows to make almost all types of bends. Machine tool Volnova can be ordered at factory or to make independently if you possess some experience. For its manufacturing, except experience and presence of materials, the drill, turning or vertical-boring machine tools be required.

The Steel for skoby and homutika should have a thickness not less than 5 mm. Rollers turn from a steel, their axes in diameter not less than 12-15 mm are fixed by nuts. The handle to skobe can be attached on a carving or to weld. The plate is cut out gas welding (cutting torch) by the thickness not by me th 12-18 mm in all width of rollers.

Kinds of bends of pipes: 1 - taps; 2 - a kalatch; a 3-duck; 4 - skoba Under homutik put the long party of a pipe, and bend the short. The bend radius is regulated by roller-template radius, therefore machine tool Volnova is equipped with several rollers-templates with different radiuses and mobile rollers corresponding to them.

For reduction of efforts at a bend a bent place grease with any oil that the mobile roller slid is better. Itself it is flexible pipes - process simple, but labour-consuming enough. There are some types of bends, but you should face only some of them - bends in one plane. On their professional slang name taps, skobami, ducks and kalatches (drawing see).

Some practical recommendations

Bending pieces of pipes, it is easy to make an error with length of preparation. As a result the beginning master unexpectedly finds out that its pipe was truncated on superfluous five - ten - fifteen centimetres. That the demanded piece of a pipe after bending has had precisely "in a place", make preliminary gaugings. With it you will be helped by two pieces of the wire, representing a pipe axis.

Precisely to define length of preparation, "simulate" its future bends on a wire. Then one of For pipes in internal diameter of 15 and 20 mm the minimum radius of a bend should be not less the than doubled external diameter of a pipe. For pipes with a diameter more than 25 mm - not less trebled external diameter. The bend causing deformation of walls, a pipe does not add durability. Therefore bend a pipe so that its seam has not had neither on bent, nor on the stretched part. In a convex external surface of a pipe after a bend metal is stretched also a pipe wall utonchaetsja. On a concave part of a bend metal is compressed. Therefore a pipe seam as its weakest part, should make together with an axis a plane, perpendicular to a bend plane.

At bending a pipe it becomes inevitable oval in a bend place. It can be avoided if to warm up a bend place. In order to avoid cracks, smjatija and other ugly deformations a pipe before heating fill river sand. The zinced pipes bend only in "a cold" condition.



In addition on a theme "the Lining ъюььѕэшърчшщ":

Tools and adaptations
Connection of pipes
the Lining of communications of system of water heating
Rules of a lining of communications
electroconducting Input

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