SU1463367A1 - Method of producing multifacet tubes - Google Patents

Abstract

The invention relates to the field of metal forming and can be used in the manufacture of multi-faceted pipes, mainly with a ratio of the maximum width of the flange to its thickness more than six. The purpose of the invention is to improve the quality of pipes and the expansion of the range. A round pipe is profiled without a mandrel in a shaped caliber having the shape of a convex polygon with straight sections, adjacent to the tops of the corners. Then, the profiled pipe is deformed on a long movable mandrel in the second shaped caliber of the same shape with a compression of 3-5% along the wall in the straight-line sections of the caliber. Then the pipe is calibrated in the finished caliber of the finished form on the same mandrel. with S (L

Description

one

The invention relates to the processing of metals by pressure and can be used in the manufacture of multi-faceted pipes, mainly with a ratio of the maximum width of the flange to its thickness more than six.

The purpose of the invention is to improve the quality of pipes and the expansion of the range.

The PCA Srb is carried out as follows.

A round pipe is profiled without a mandrel in a shaped caliber, and the shape of a convex polygon. Peripheral zones brook caliber have

The straight sections are 4-6 times the thickness of the pipe wall. Then, the profiled pipe is deformed on a long movable mandrel in the second shaped caliber with a compression on the wall of 3-5% in the areas of straight sections of the caliber. The shape of the second shaped caliber is similar to the first caliber. Subsequently, the profiled tube is calibrated in the finished caliber of the finished profile on the same mandrel. When this happens straighten m-. the formation of the flanges of the pipe, a gap is formed between the inner surface of the pipe

3146

i | oprappcon, thanks to which the frame is freely removed from the pipe.

PRI me R. The method of manufacture of a square pipe 50502 in size with; hoist Х18Н10Т; As a blank, .1 use a pipe of 65–2 mm in size. By inserting the mandrel into the tube, it is profiled with a drawing in the shaped caliber of a roller die. The shaped gauge is a convex square with linear portions attached to the vertices of the corners. Dimensions

: alibra: vertex distance

After dragging, the mandrel of freedoms is removed from the pipe. The resulting pipe meets the following technical requirements: the radius of the coupling

: alibra 50 im., length of linear sections - 15) 0.6 mm facets, thickness tolerance

: s 10 ic-i, bottom deflection arrow, central stream 7 mm.

I In the short, profiled i py6y, a long movable frame of 45.5 45.5 mm and length ZOOO mm is inserted. The pipe on the mandrel passes through a roller, die, the shape of which ya {ibra which is similar to the shape of the pre-; | the caliber of caliber

i The distance between the top and the vertex is 4.5 49.5 mm. In this passage, the pipe was rolled and compressed by 4%. by 4 tons on straight lines, sections of slokD on a long mandrel, the wall is calibrated in thickness over the entire width Ke.

The central part of the pipe shelves is about 0.35 mm. Secondly, the flange on the aisle profile profiles the interface of the shelves along the internal contour 1 | fofil. in particular, and the radius of the match is 0.6 mm,

The finishing pass is performed in caliber, having the shape of a regular

s ± 0.15 mm, curved polo within tolerance on contour p measures.

The use of multifaceted labor 20 true accuracy of calls to et to calibrate parts, for example, hoops for integrated radio circuits made of them.

Claims (1)

25 Formula invented A method of manufacturing multi-faceted pipes, including the deformation of a round pipe in a shaped caliber with straight 30 1Gayyny areas adjacent to the tops of the corners, and the calibration of the go-go profile in the finishing caliber, which is, in order to improve the quality of pipes and p  25 widths of the assortment, carry out the deformation of a profile without a mandrel in a shaped caliber of a pipe with a long movable mandrel in a second fashioned caliber by squeezing on the walls In the finishing caliber, convex tufts of pipe shelves are straightened. At the same time, the machine of the pipe, 5 aligning, moves away from the mandrel, forming a gap, in this case equal to 0.25 mm. The size of the gap is defined as the half-difference of the length of the arc of the middle part of the pipe flange and the chord on which it is conventionally supported. After dragging, the mandrel is freely removed from the pipe. The resulting pipe meets the following technical requirements: mating radius edge 0.6 mm, thickness tolerance with tents ± 0.15 mm, curved shelves within the tolerance on contour dimensions. The use of multifaceted pipes of the current accuracy of calls to et exclude calibration of parts, for example rims for integrated radio circuits, made of them. Invention Formula A method of manufacturing multi-faceted pipes, including the deformation of a round pipe in a shaped caliber with straight sections adjacent to the tops of the corners, and the calibration of the finished profile in the finishing caliber, so that the quality of pipes and extensions of the assortment, they are carried out - deformation of the profile of a pipe without a mandrel in a shaped caliber on a long movable mandrel in a second shaped caliber by squeezing on the walls a square formed by a cylindrical, 40 ke in the areas of direct participation roller, i50 im. The size of the caliber. 50 Caliber gauge and calibration of the finished profile are, on the same mandrel. Caliber gauge and calibration of the finished profile are, on the same mandrel.