JPS5935889A - Production of steel cored trolley wire - Google Patents

Abstract

PURPOSE:To make the position of a steel core with respect to a base material constant and to obtain a steel cored trolley wire having good quality, by providing a groove for accepting the steel core to the roll on one side of a pair of rolling rolling rolls, introducing the steel core and the base material between the rolls and rolling rolls and rolling the material. CONSTITUTION:A wear resistant iron alloy wire having a circular or square section and a metallic base material of Al or the like having high conductivity are prepared. Such steel core 1 and base material 2 are heated and are introduced into the space between a pair of rolls 4, 5 provided with a groove for accepting the steel core 1 on the roll 5 on one side, whereby the core and base material are rolled. Guides 6a, 6b having a limited width and outside shape are beforehand provided between the upper and lower rolls 4 and 5. The position of the core 1 in the trolley wire is stabilized by the above-mentioned method. Since the core 1 is exposed from the slideway after the production of the trolley wire, the effect of resistance to wear is obtd. immediately when it is used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an L-rolley wire, particularly a steel-cored trolley wire.

Toro IJ wires, which have a steel core with a round, rectangular or other cross-section and whose base material is highly conductive aluminum, copper, etc., are well known, and an example thereof is shown in FIG. In Figure 1, steel core 1
is embedded in the metal base material 2 and takes the form of a levee, but such contact wires are generally manufactured by a wire drawing method or an extrusion method. On the other hand, in the wire drawing method, the metal base material 2 is formed into a trolley shape using a number of dies, and the position where the steel core 1 is to be embedded is also formed, and after the steel core 1 is embedded in the position, drawing is performed. This increases the number of steps, which is economically disadvantageous. -Producing such contact wires by machine/coat extrusion requires expensive and special extruded materials, and this method is disadvantageous in terms of equipment.

An object of the present invention is to provide a method for manufacturing a steel-cored wire with a core at a low cost using rolling welding.

The important thing in producing a steel-core L/roller as shown in Figure 1 by rolling welding is that the relative position of the steel core and metal base material must always be kept constant during rolling. be. According to the present invention, of a pair of rolling rolls, the surface of the roll in contact with the steel core is provided with a groove for receiving the steel core, and the steel core and metal base material are introduced between these rolls and rolled 1F. By doing so, the IW of the steel core relative to the metal base material becomes constant, and a contact wire of good quality can be manufactured. The present invention will be explained below based on the drawings.

FIG. 2 shows a cross section of the contact wire between the upper and lower rolls 4 and 5 when the contact wire is manufactured by rolling welding using a rolling mill. 71 in Figure 3.・Prepare a highly abrasive stainless steel core, for example, 81183 (14) with a diameter of 12 m, by performing wire brassing around the entire circumference, and on the other hand ``γ Lumi: - Uno, A 11
A metal fU with a width of 10 mm and a height of 20 mjTl consisting of 00
After wire bratsong the side that touches the steel core of 2
Heat to 00-500℃ 7, then roll both 4℃ 5
Introduced in between. The groove 3 corresponding to the lower roll 5 has a steel core]
i-1' l-, and the steel core 1 is inserted into this groove 3. Moldings (1'6a, 61) for limiting the width and external shape of the contact wire are provided between each roll.

Roll 4 ij: RF diameter 300 cylinder (7) Flat roll tear!
The groove 3 of the J, O-ru 5 is provided in the groove of the spherical bottom with a width of 11 mm and a depth of 4 mm, and the depth is 32 mm.
It is 1 minute compared to the previous year.

By rolling between such rolls, a high quality contact wire with a steel core in place is manufactured at low cost.

'h, 'L' -1: The number f1ti i+;I is just one example, and there are a wide variety of variations 1] f1. -4, 1 with multiple steel cores.・When manufacturing n IJ wire, the surface shape of the lower V-1-ru is neatly set dL.
! According to - Month C 1. Just do C1.

141 In the h method of the present invention, the position of the steel core is stable 1)
After manufacturing the contact wire, the steel core is exposed to water from the sliding surface.
Since it has this shape, it is possible to obtain a surface 1 wear efficiency in IH at the beginning of use as a contact wire.

Le, 5...Toy 11110-Le, 6 +++ 6 b
...with molded guy 1.

Claims (1)

[Claims] (1) A wear-resistant iron alloy wire having a suitable cross section such as a circular cross section or a square cross section and a highly conductive metal matrix are placed on the side in contact with the iron alloy wire to match the cross-sectional shape of the iron alloy wire. A method for manufacturing a steel-cored contact wire, which comprises guiding the wire between a pair of rolls including a roll having grooves and rolling and pressing the wire.