SU923790A1 - Powder wire production method - Google Patents

Description

The invention relates to welding, in particular to a method of manufacturing cored wire.

A known method of manufacturing cored wire, which produces the unwinding of the tape with the coil - ⁵

ki, forming the tape in the gutter, filling the gutter with charge, rolling the gutter and dragging [ί}.

However, the known method of manufacturing cored wire does not provide ^{, 0} baking sufficient performance.

The purpose of the invention is to improve the performance of the manufacture of cored wire.

The goal is achieved by a method according to which produce tape unwinding from coils, the molding belt to the trough, filling the trough _nd the batch nenie, rolling and drawing trough, the tape unwinding from the reel in a spiral twist, then it is fed through the shaped-5 po2

faces, and before forming again twist the tape into a spiral with the direction of winding opposite to the first.

The number of lines in the spiral is chosen from the condition.

BHP ^ SO

where B is the width of the tape; n is the number of rolls.

The number of the first helix bundles is chosen more than the number of the second helix bundles.

FIG. 1 shows a line diagram for implementing the method; in fig. 2 - the same, top view; in fig. 3 ~ scheme of unwinding the tape from the reel; in fig. 4 - tape form in cross section.

The essence of the proposed method is visible in the line for its implementation, This line consists of an unwinding device with a coil 1,

5-shaped rollers 2, the forming device.3, the hopper 4 for feeding the mixture.

923790 4

Next is the process of repeated drawing using fiber 5, pulling drums 6 and winding drum 7. For continuous dragging, the line is equipped with an original welding machine 8 and a deburring machine 9. In zone 10 and 11 it is twisted into a spiral along its course.

The coil has a width of 2 E, and its distance from the upper roller 2 is equal to the distance K. In the process of unwinding, the helix occupies two extreme positions 12 and 13 "with the deflection angle of the helix from the axis of the line being ί W ..

As a result of twisting and drawing, the tape, when entering the forming zone, gets a grooved shape with an inner radius of 8.

First, the tape is removed from the coil, pulling some of the turns in the axial direction of the coil, then pulling the helix along the tape axis.

The drawing speed is 10 m / s.

The application of the proposed method allows to increase the productivity of the manufacture of cored wire. By twisting the ribbon into a spiral, the ribbon is straightened. The application of the method helps to improve the dynamics of the passage of the tape through the equipment, significantly improves the accuracy of centering the tape at the entrance to the molding section.

Thanks to the twist, the tape at the entrance to the molding gets grooved, which facilitates the molding, as well as eliminates the lateral beating in the dose zone of the torus.

Claims (3)

Claim S 1. A method of making flux-cored wire, in which the tape is unwound from the reel, the tape is formed into the chute, the channel is filled with charge, the channel is rolled, and drawing is done, in order to increase production, the ribbon is unrolled when unwinding from the spool in the form of a spiral, then it is fed through B-ob · * different rollers, and before forming it is again twisted the tape into a spiral with the winding direction opposite to the first one. 2. The method according to p. 1, characterized in that the number of rolls in the spiral is chosen from the condition BHP ^ SO, where B is the width of the tape; η is the number of rolls. 3 · Pop method. 1, characterized in that the number of the first helix folds choose more than the number of the second helix folds.