JPH03238117A - Drawing of metallic wire and method for removing wire rod drawing lubricant - Google Patents

Abstract

PURPOSE:To draw a hard-to-work wire rod and to completely remove wire drawing lubricant by drawing metallic wire rod with specific lubricant, then, running it in a water tank of a prescribed temperature and taking the water away. CONSTITUTION:A wire drawing device 1 and the water tank 2 are provided in sequence and an auxiliary remover 3 such as a hemp rope directly before the water tank 2 and felt directly behind it are arranged. A steel wire rod S plated with zinc-aluminum alloy is drawn by using sodium stearate base wire drawing lubricant. Continuously a portion of the lubricant is removed through the auxiliary remover 3 previously from the steel wire rod S on the surface of which wire drawing lubricant sticks after the wire rod is drawn, drawn wire is run and passed in the water over 90 C in the water tank, then, water is taken away through the felt 4 and then the lubricant is removed completely.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for drawing a metal wire coated with polyethylene or the like and for removing a wire drawing lubricant.

(Prior Art) S, S cables (self-supporting cables) for communications use plated steel strands coated with polyethylene or the like for insulation, support, and corrosion resistance.

Conventionally, galvanized wire was used as the plated steel stranded wire, but recently, highly corrosion-resistant zinc-aluminum alloy coated wire has been used instead of galvanized wire.

At present, this zinc-aluminum alloy plated wire is generally subjected to afterdraw (wire drawing after plating).

In the case of after-drawing, the wire drawing lubricant is attached to the wire surface in that state, and the wire surface is smoother than the unplated wire, so if the wire is coated with polyethylene, etc. , a phenomenon occurs in which the wire and polyethylene do not adhere well and slip, causing the wire to fall out of the polyethylene covering.

Therefore, in order to improve adhesion, it is necessary to remove as much wire drawing lubricant as possible from the wire surface.

However, in the conventional method called mizuhiki, in which a metal wire is immersed in lime water at room temperature with a little bit of soap, etc. and then drawn, a soft metal is plated or drawn on a hard steel wire. It is difficult to draw coated materials, such as the above-mentioned zinc-aluminum plated wire, which are difficult to process, and can only be drawn by light stripping.

■With the method of drawing and removing the metal wire by passing it through a water tank before the final die, the solubility for dissolving the lubricant is low, so the removal power is weak and a considerable amount of lubricant remains (remaining amount of lubricant: 0)
．． 29 to 0.58 g/rrr).

(2) The method of using kerosene and removing with a brush is extremely inefficient, with large variations in the longitudinal direction, and lubricant remains as much as before (0.25 to 0.33 g/fllf).

Although it is possible to remove a considerable amount by applying a jet jet of fresh water or a cleaning solvent (methacrene), it still remains (0.2 to 0.3 g/fIlf).
), and the equipment cost is high.

(Problems to be Solved by the Invention) The purpose of the present invention is to solve these problems all at once. To provide an excellent method for drawing a metal wire and removing the drawing lubricant by which a removal step for removing a wire drawing lubricant can be carried out continuously, the productivity is high, and the equipment cost is low.

(Means for Solving the Problems) The first means taken by the present invention to achieve the above-mentioned object is a wire drawing process in which a metal wire is drawn with a sodium stearate-based wire drawing lubricant. A wire drawing lubricant removal process in which a metal wire with a wire drawing lubricant attached to the surface after the wire is run in a hot water tank at 90° C. or higher and then drained; characterized in that both of the above steps are performed consecutively. .

The second method is a wire drawing process in which the metal wire is drawn with a sodium stearate-based wire drawing lubricant, and the metal wire with the wire drawing lubricant attached to the surface after drawing is placed in a hot water bath of 9,000 or more. The wire drawing lubricant removal step is characterized in that the wire drawing lubricant removal step is performed in which the liquid is drained after the wire is run through the inside of the organic solvent liquid tank and the organic solvent liquid tank in sequence, and the above-mentioned two steps are performed continuously.

In the present invention, if the bath temperature is lower than 90°C, the removal rate of the wire drawing lubricant will be low and the drying of water will be slow.
Hot water at 0°C or higher is preferable.

Also, felt can be used to drain the liquid, but the liquid may also be drained by blowing compressed air onto it.

Furthermore, if a hemp rope or stainless steel scrubber is provided just before the hot water tank and the organic solvent liquid tank, some of the wire drawing lubricant can be removed in advance.

(Example) An example of implementation of the present invention will be described in detail below with reference to the drawings.

Figure 1 illustrates a device for achieving the first method, in which a wire drawing device 1 and a hot water tank 2 are installed in sequence, and an auxiliary removal tool 3 such as hemp rope is placed immediately before the hot water tank 2. Felt 4 is placed in the area.

Example ■ Steel wire S coated with zinc-aluminum alloy to a diameter of 2.3 mm was coated with a sodium stearate-based wire drawing lubricant (Koshin H1).
00, manufactured by Kyoeisha Yushi Kagaku Kogyo ■), the wire was drawn to a finished diameter of 1.8 mm using a 3-die dry method.

Next, it was continuously run through a 100° C. vortex in a 1.5 m long bath 2, and after passing, the liquid was drained with a felt 4 and wound up on a drum 5.

The running speed was 125 m/min. Moreover, the hot water in the hot water tank 2 was filtered and circulated. The remaining amount of wire drawing lubricant in the zinc-aluminum alloy plated wire after treatment is 0 to 0.15 g/r.
It was rf.

FIG. 2 exemplifies an apparatus for achieving the method of the second invention, in which a wire drawing device 10, a hot water tank 11, and an organic solvent liquid tank 12 are installed in sequence, and immediately before the hot water tank 11 and the organic solvent liquid tank 12, Use auxiliary removal tool 13.13 such as hemp rope, and immediately after use felt 2.
4.14 are installed respectively.

Example ■ A zinc-aluminum alloy plated steel wire S with a diameter of 2 to 3 mm was coated with a sodium stearate-based wire drawing lubricant (Koshin H1).
00, manufactured by Kyoeisha Yushi Kagaku Kogyo ■), the wire was drawn to a finished diameter of 1.8 mm using a 3-die dry method.

Next, it is continuously run through hot water at 100°C in a 1.5 m long hot water tank 11, and after passing through, the liquid is drained with a felt 14, and after that, it is run in a 1.5 m long organic solvent liquid tank 12. After passing through kerosene, the liquid was drained with a felt 14 and wound up on a drum 15.

The running speed was 125 m/min. Also, hot water tank 11
The hot water in the tank 12 and the kerosene in the organic solvent tank 12 were each filtered and circulated.

The remaining amount of the wire drawing lubricant in the zinc-aluminum alloy plated wire after the treatment was 0 to 0.10 g/m.

The following table shows a comparison of the amount of wire drawing lubricant remaining in the conventional method (■■■) and the method of the present invention.

From the above table, it can be seen that the method of the present invention is more suitable than the conventional method for manufacturing difficult-to-process wire rods in which the residual amount of wire drawing lubricant is small.

(Effect of the invention) Therefore, the present invention has the following advantages.

- It is possible to draw difficult-to-process wire materials such as zinc-aluminum alloy plated wire at a normal drop rate, and the wire drawing lubricant can be almost completely removed, making it suitable for S, S cables, etc.

■Since productivity is high and equipment costs are low, stable supply can be achieved in terms of cost.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an apparatus employed to carry out the first aspect of the method of the present invention. FIG. 2 is a schematic diagram of the apparatus employed to carry out the second aspect of the method of the present invention. In the figure, S is the metal wire 1, 10 is the wire drawing device 2, and 11 is the hot water tank 12 is the organic solvent liquid tank.

Claims (1)

[Scope of Claims] 1. A wire drawing process in which a metal wire is drawn with a sodium stearate-based wire drawing lubricant, and a metal wire with the wire drawing lubricant attached to the surface after drawing is placed in a hot water bath at 90°C or higher. A method for drawing a metal wire and removing a wire drawing lubricant, the method comprising: a drawing lubricant removal step of draining the wire after the metal wire runs; and a method for drawing a metal wire and removing the drawing lubricant, which comprises performing both of the above steps in succession. 2. A wire drawing process in which metal wire is drawn with a sodium stearate-based wire drawing lubricant, and the metal wire with the wire drawing lubricant attached to the surface after drawing is placed in a hot water bath at 90°C or higher and in an organic solvent liquid bath. A method for drawing a metal wire and removing a drawing lubricant, characterized in that a wire drawing lubricant removing step is performed in which the liquid is drained after running the inside and the inside of the metal wire sequentially, and the above-mentioned two steps are performed continuously.