SU1233979A1 - Method of producing flexible porous tubes - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the manufacture of mesh tubes used in contact heat and mass transfer apparatus in the formation of permeable matrices in filters.

The purpose of the invention is to increase the flexibility of the tube and reduce the metal intensity.

FIG. Tables 1 to 3 show this tube production; on fi1. 4 --- option 1o; student t) pack by rotating one end at the other end.

The production of a flexible 6 mm diameter tube is made as follows.

The grid sheet cuts the strips with a width of 18 mm, equal to the sum of the length along the base perimeter of the base and the overlap allowance. The larger side of the nose is attached along the generatrix and the aralle of the 1 axis of the form. The nolosa is wound on the mandrel by rotating the children around the axis or by rotating the nolosa around the frame. The remaining allowance of 1.5 mm after winding and the overlapping force the tube with a reinforcement, which ensures the suction level to the new one.

the tube. Then, in order to make the tube more flexible, the ends of the tube are twisted to the opposite side at an angle of 60--80 ° to obtain a twisted tube with a niaroM winding 50 mm, the composition. And) tube diameters.

Possible other nose: 1 is noxious (the operation when the net sheet is wound onto the mold, then a section of the flow tube is removed from the sheet, then the nose is attached to the sheet. The same therapy is retained.

It is clear that the first-half of the proposed method of lio-irradiating a tube provides, in comparison with limestone), a 1m increase in flexibility due to an increase in cutting, the ability to restore the shape of a tube after removal of the tube. , iio; iy- iio uoBoii techno.gygi bolp1e; Tate umepk pi mate) and the intensity and:, -:, and umenpeeniya l.leiny seam, u1: -; 1He11: I p:;:;; l navivka and the absence of stiffs; sieheshgogo seam. In addition, but the proposed ciiocoov is absent from the material walk.; 1OP, because the pair of tubes they (the lock has a shape, as well as a box) gives the mother a reduction; the capacity in the re: that decreases the length).

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Order 271 I / 8 Draw 783i lo; L.-iu iioe

VNIIPI State Committee of the USSR

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab.,. 4; 5

Branch PPP "Patent, Uzhgorod, st. Project, 4

FIG. H

Claims (3)

1. METHOD FOR PRODUCING FLEXIBLE POROUS TUBES from a metal mesh, including cutting the grid into measuring blanks with allowance, securing it to the mandrel, winding the mandrel and removing the mandrel from the finished tube, characterized in that, in order to increase the flexibility of the tube and reduce the metal consumption, the workpiece attached to the mandrel with its larger side along the axis of the mandrel, winding is done at 360 °, followed by pressing the allowance to the surface of the tube, after which the tube is twisted by rotating its ends in opposite directions nyah. 2. The method according to p. 1, characterized in that the winding is produced by rotation of the mandrel. 3. The method according to and. 2, characterized in that the winding is produced by the revolution of the strip around the mandrel. SU „„ 1233979 FIG. 1