WIPING OF TREATED WIRE OR STRIP

ESSUYAGE DE FIL OU DE FEUILLARD TRAITE

English Abstract

ABSTRACT OF THE DISCLOSURE
A pad wiping material for coated wire or strip and
a method of forming such material. The material is a
compressed, non-combustible,alumino silicate fibrous material
which preferably includes asbestos, which has been compressed
by the application of pressure in the range of 7 to 20 tonnes
per square inch. The method of forming the pad wiping
material includes compressing such a non-combustible
alumino silicate fibrous material into a pad or disc by an
application of pressure in the range of 7 to 20 tonnes per
square inch.

Claims

CLAIMS
1. A compressed pad for the wiping of coated wire or
strip as it emerges from a molten metal bath, consisting
essentially of a compressed alumino silicate fibrous material.
2. A pad as claimed in claim 1 wherein said fibrous
material has been compressed under a pressure in the range of
7 to 20 tonnes per square inch.
3. A pad as claimed in claim 1 wherein said pad further
contains a lubricant therein.
4. A pad as claimed in claim 3, wherein said lubricant
is powdered graphite.
5. A method for forming a pad as defined in claim 1
which includes the steps of
a) feeding an amount of material consisting essentially
of fibrous alumino silicate, and
b) compressing said material under pressure to form
an integral pad.
6. A method according to claim 5 wherein said pressure
is in the range of 7 to 20 tonnes per square inch.
7. A method according to claim 5 wherein said material
also includes a lubricant.
8. A method according to claim 7 wherein said lubricant
is graphite.

Description

ll~S513
Thi8 invention ~elates to the wiplng of a metal coat-
~ng applied to A wire or strip.
The invention h~s particular, although not exclusiYe app -
5, lication to the wiping o~ A coating as wire or strip emerges~rom a bath of ~lolten ~etal such as zinc, or some other suit-
able metal coating materi~l.
Up until this t~me, in the gal~anising of wire or
coating of wire, the ~ire or str~p has ~een taken from the
10. bath at ~ shallow nngle to the horizontal and wiped with
an as~estos pad or asbestos string.
In one case of asbestos string, the asbestos string is
wound round the wire and the wire passed through a slot
between a pair of fingers, so that the string is wedged
15. into the ~lot, thus w~ping the sur~ace of the wire or
strip. In t~e case of pads, these have generally been
formed by hand, by ~inding asbestos card into a pad or
disc, the pad or disc then being placed in a suitable
pad holder.
20, It is an object of this inYention to go someway towards
providing an lmproved material for the wiping of coated wire
or str~p, and to at least provide the public and manufacturers
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with a useful choice.
Other objects will become apparent from the following
description.
According to an aspect of this invention, there is
provided a wiping material for pad wiping of coated wire
or strip, said material including alumino silicate fibrous
material, compressed by an applied pressure in the range of
7 to 20 tonnes per square inch.
According to a further aspect of this invention, there
is provided a method of forming a pad for pad wiping of
coated wire or strip including compressing a non-combustible,
alumino silicate fibrous material into a pad by an applied
pressure in a range 7 to 20 tonnes per s~uare inch.
This invention will now be described by way of example
onl~, and it should be appreciated that modifications and
improvements may be made to the invention without departing
from the scope or spirit thereof, as defined by the appended
claims.
It has been found in experimentation, that a compressed
non-combustible material has particular advantages in the
wiping of wire or strip, which has been coated with a
suitable coating such as zinc, or some other metal coating
material during the processing of wire or strip.
In one form of the invention the compression is carried
out by a press which consists of a piston moving within a
tubular member or housing of a cross section corresponding
substantially to that of the resulting pads.

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The applied pressure or pressure applied to the non-
combustible material will vary depending upon the size of the
wire to be wiped, and hence the ability of the pad to wrap
around the wire on the other hand the ability of the pad to
remain as an integral unit during wiping.
The compression and thus compacting of the non-
combustible material causes the resultant pad or disc to
remain as an integral unit during wiping.
For large diameter wires, the pads are preferably softer
(that is to say compressed at a lower pressure) than would
be the case for pads suitable for small diameter wires.
In the preferred form of the invention, a pad is formed
of an alumino silicate fibrous material.
It has been found that by using an alumino silicate
lS fibre material, which is compressed into a pad by an applied
pressure in the range of about 7 to about 20 tonnes per
square inch, there are a number of advantages.
By way of example the advantages are:
1. The use of alumino silicate fibre removes or at
least reduces health hazards which might be present
by using the asbestos material as has been used up
until this time.
2. It has been found during experimentation that
the use of alumino silicate fibre material, as a
pad wiping material, enables the pad wiping
material to withstand temperatures generally
higher than asbestos material. For example
it has been found that alumino silicate fibre
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material can generally withstand high temperatures
(such as found during wiping operations)
of up to approxLmately 1300C.
3. The use of alumino silicate fibre material
as a pad wiping material has generally been
found to give a longer and high pad life than
other wiping materials (such as asbestos).
4. By using alumino silicate fibre material as
a pad wiping material, it hac been found that a
more even wipe is obtained over the wire or
strip, than is generally obtained by using
other materials (such as asbestos).
5. The use of alumino silicate fibre results in
a tighter wipe about the wire or strip, and
generally speaking results in a low coating
thickness as compared with other materials.
The use of alumino silicate fibre is there-
fore somewhat more economic than other
materials.
As stated hereinbefore the non-combustible alumino
fibrous material is compressed into a unit (a pad or disc)
by pressure in the range of 7 to 20 tonnes per square inch,
so as to result in a compressed pad or disc, which is able to
be used for the wiping of coated wire or strip.
It should therefore be appreciated that improvements
or modifications to this invetnion may be made without
departing from the scope thereof, as defined by the appended
claims.