SU1671733A1 - Method of wire coating - Google Patents

Abstract

The invention relates to the rubbing coating and can be used in the manufacture of wire products with protective and decorative coatings. The goal is to expand the range of products due to the possibility of coating the wire with a diameter of less than 0.5 mm. The method of coating the wire involves transferring the coating material with a rotating brush from the bar to the rubbing zone of the coating on the moving wire when an additional element from the coating material is introduced into the rubbing zone, pressing the wire to it and moving it between them with a rotating brush. In the method, the additional element is given a reciprocating movement in the direction perpendicular to the direction of movement of the wire, as well as rotation. The method provides uniform coatings with a thickness of 4 to 8 microns on wire products with a diameter of 0.1 mm and above. 2 hp f-ly. 1 tab.

Description

The invention relates to the rubbing coating and can be used in the manufacture of wire products with protective and decorative coatings.

The aim of the invention is to expand the range of products due to the possibility of coating the wire with a diameter of less than 0 5 mm

According to the method of coating the wire, the coating material is transferred by a rotating brush from a bar to the coating area of the coating on the moving wire when an additional element from the coating material is introduced into the grinding area, pressing the wire to it and moving it between it and the rotating brush. Additional element is reported reciprocating

moving in the direction perpendicular to the direction of movement of the wire, as well as rotation.

Example 1. An aluminum coating from an aluminum bar is applied to a wire with a diameter of 0.1-2.0 mm from steel 70. For coating, a transfer zone is defined in which a brush rotating at a peripheral speed of 8-15 m / s transfers the coating material to the surface of the wire. An additional element of the coating material — an aluminum roller — is installed in the transfer zone. The wire is passed in the transfer zone between the brush and the additional element. The introduction of an additional element of the same coating material into the transfer zone gives the product to be coated a new property of transferring particles of the coating material from the additional element non

WITH

with

mediocre in the transfer zone. This makes it possible to improve the quality of the coating and to carry out the application of the coating onto thin (with a diameter of less than 0.5 mm) wire.

The coating in all experiments was carried out at a wire speed of 0.2-1 m / s, the speed of the reciprocating movement of an additional element 25 mm / s with an amplitude of 30 mm. The pressing force of the wire to the additional element is 150-200 N.

The reciprocating movement and rotation of the element in the direction of movement of the product ensures uniform coating and even wear of the additional element.

The properties of the aluminum coating obtained on wires of different diameters according to the proposed (experiments 1-3) and known (experiments 4-6) methods are listed in the table.

As can be seen from the table, according to a known method (test 4-6), a uniform coating can be obtained on a wire of sufficiently large diameter (2 mm), processing a wire with a diameter of 0.4 mm results in a large unevenness of the coating thickness (thickness 6 microns), and 0.2 mm wire diameter can not be applied in a known manner.

The proposed method allows for the treatment of a uniform coating of thin wire (experiments 1-3).

Example 2. A steel brush is applied with a steel brush to a steel wire with a diameter of 0.25 mm by transferring it from the copper bar to the wire. An additional element, a copper roller, is installed in the formation zone of the coating. The wire is passed between the brush and the copper roller. The brush rotates at a peripheral speed of 26 m / s. Five wires are simultaneously treated. In the coating process, the wire is pressed against the surface of the copper roller and pulled by a winding device at a speed of 0.4 m / s. On the wires form a layer of copper with a thickness of 5-8 microns.

Example 3. On a steel wire

0.2 mm in diameter, steel brass L90 is applied with a steel brush from a brass bar. An additional element, a brass roller, is installed in the formation zone of the coating. Wire is passed

between brush and brass roller. The brush rotates at a peripheral speed of 30 m / s. At the same time, 6 wires are processed, which are pressed to the brass roller and pulled at a speed of 0.7 m / s. Wherein

on wires form a layer of brass 4-6 microns thick.

Claims (3)

1. A method of coating the wires, which involves transferring the coating material by a rotating brush from a bar of material to the rubbing area of the coating on a moving wire, characterized in that, in order to expand the range products due to the possibility of coating the wire with a diameter of less than 0.5 mm. An additional element from the coating material is introduced into the rubbing zone, the wire is pressed against this element and move between it and the rotating brush. 2. A method according to claim 1, characterized in that, in order to increase the uniformity of the coatings, an additional element reciprocating movement is reported in the direction perpendicular to the direction of movement of the wire. 3. The method according to claim 1, characterized in that, in order to increase uniformly the coatings, an additional element is reported to rotate.