CA2054632A1 - Continuous wire drawing process with mechanical descaling and post-die treatment and apparatus - Google Patents
Continuous wire drawing process with mechanical descaling and post-die treatment and apparatusInfo
- Publication number
- CA2054632A1 CA2054632A1 CA 2054632 CA2054632A CA2054632A1 CA 2054632 A1 CA2054632 A1 CA 2054632A1 CA 2054632 CA2054632 CA 2054632 CA 2054632 A CA2054632 A CA 2054632A CA 2054632 A1 CA2054632 A1 CA 2054632A1
- Authority
- CA
- Canada
- Prior art keywords
- stock
- buffing
- scale
- lubricant
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- Metal Extraction Processes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention is a process for drawing and forming a bright wire of a predetermined diameter and cross-section, from stock of a greater diameter. It includes the steps of (a) continuously feeding said stock from a supply spool through the process; (b) mechanically removing scale from said stock; (c) applying a coating of lubricant carrier to the descaled stock; (d) applying drying air to the stock with the lubricant carrier thereon; (e) applying a lubricant to the carrier-coated stock;
(f) drawing the lubricated stock through one or more pressure dies to decrease the diameter of the stock down to the desired predetermined diameter; (g) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (h) coiling the resulting bright wire into coils for subsequent use. The process is continuous and the speed of the stock is maintained by conventional drive mechanisms to feed into the process and to coil off the process at predetermined speeds. In one embodiment, mechanical removal of scale includes the following steps: (i) bending the stock in at least three different directions over small enough arcs to cause peeling of scale; (ii) abrading of the stock to remove any remaining scale; and, (iii) rinsing the stock to remove any dust resulting from descaling. The present invention also includes the apparatus for the process.
The present invention is a process for drawing and forming a bright wire of a predetermined diameter and cross-section, from stock of a greater diameter. It includes the steps of (a) continuously feeding said stock from a supply spool through the process; (b) mechanically removing scale from said stock; (c) applying a coating of lubricant carrier to the descaled stock; (d) applying drying air to the stock with the lubricant carrier thereon; (e) applying a lubricant to the carrier-coated stock;
(f) drawing the lubricated stock through one or more pressure dies to decrease the diameter of the stock down to the desired predetermined diameter; (g) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (h) coiling the resulting bright wire into coils for subsequent use. The process is continuous and the speed of the stock is maintained by conventional drive mechanisms to feed into the process and to coil off the process at predetermined speeds. In one embodiment, mechanical removal of scale includes the following steps: (i) bending the stock in at least three different directions over small enough arcs to cause peeling of scale; (ii) abrading of the stock to remove any remaining scale; and, (iii) rinsing the stock to remove any dust resulting from descaling. The present invention also includes the apparatus for the process.
Description
~S~2 CONTINUOUS WIRE DRAWING PROCESS WITH MECHANICAL
DESCALING AND POST-DIE _R ATMENT AND APPARATUS
The present invention is directed to a bright wire draw process and apparatus. The process and apparatus include mechanical scale removal before pressure die drawing and buffing after drawing. ~igher speeds and more efficient production is achieved.
The commerce of bright wire production has been active for decades and the end use of ~right wire is very diverse. Metal hangers, nail~, medical devices, axles, pins~ shaft~, rods, hooks, etc., are fabricated from bright wire, to 5~53~
name a few. The broad hased market for bright wire includes carbon steel, alloy steel and stainless steel, as well as others.
~ istorically, metal stock, sometimes called hot rolled wire or rod, is manufactured from molten metal and subsequently reworked or sold for reworking into different sizes (and shapes).
These ~tock rolls have been stretched or drawn into lesser diametersl for example, through pressure dies, and have been pretreated to remove scale or oxides, and have been lubricated to prevent rapid wear of the dies. Typically, pretreatment ~or scale removal ~nvolved the use of acid baths, and, even today, production facilities may utilize a batch type pickling proces~ for descaling whereby cranes or hoists Z~5~3~
physically dip rolls of stock into and out of large heated vats of acid and rinse water and dryers. ~his descaling operation is costly due to labor needs, it requires large floor space and expensive equipment is slow, creates long down times for bath changes and may cause pollution problems such as spent acid disposal and acid evaporation.
Some of the very modern facilities for drawing bright wire utilize continuous instead of batch processes, but the wire must be traversed back and forth over pulley~ in the baths to provide adequate bath and rinse tlmes. Further, spent acid, evaporation, floor space and other problems remain even though the batch method is supplanted by continuous flow methods.
2C`5~ 2 Additionally, bright wire production is achieved by the descaling, drawing and brightening of the wire product. This brightening is accomplished by control of limited or no lubrication to the wire as it passes through its final draw ~smallest~ last die). The friction of the die scrapes or otherwise removes any coatings and yields a bright product. While this method is acceptable industry wide, it does cause wear and frequent replacement of the ~inal die and requires substantlal power to p~11 the stock through the die by overcoming the intentional frictional drag.
These problems stated have not been addressed or overcome by the industry or prior art until the present invention. For example, ZC5~3~
good continuous draw technology which in many respects may be today' 5 standard, is exemplified by the 1923 patent to Ernst Boley as V.S. Patent No. 1,470,374. ~his patent describes the state of the art, except for perhaps computerized or modern speed control systems, but these are not the subject of the present invention. ln the ~oley method, three or four baths are utilized, including an acid bath and the problems pertaining thereto as discussed above are not eliminated.
To minimize problems of wire resting in acid baths during down time, ë.g. die change~, etc., the art teaches the use of an intermediate wire collecting and feedinq device as shown in U.S.
Patent No~ 3,354,687 to Walter ~auson. While 2(~!5~ 2 this patent issued more than 40 years after Boley, it confirms the continuing use of acid baths for descaling.
The present invention is directed to a process for drawing and forming a bright wire of a predetermined diameter and cross-s~ction, from s~ock of a greater diameter. The process includes the steps of (a) continuously feeding said ~tock from a ~upply spool through the process; (b) mechanically removlng scale from said stock; (c) applying a coating of lubricant carrier to the de~caled ~tock; (d) applying drying air to the ~tock with the lubricant carrier thereon; (e) applying a lubricant to the carrier-coated stock; ~ f ) drawing the lubricated Z~ 53~
stock through one or more pressure dies to decrease the diameter to the desired predetermined diameter; ~g) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angle~ to the direction of travel of the stock to produce bright wire; and, (h) coiling the resulting bright wire into coils for subsequent use. ~he process i8 continuouC
and the speed of the stock is maintained by conventional drive mechani6ms to feed into the process and to coil off the process at predetermined speeds. In one preferred embodiment of the process, mechanical removal of ~cale includes the following steps: (i) bending the stock in at least three different directions 2(~5~S32 over small enough arcs to cause peeling of scale;
(ii) abrading of the stock to remove any remaining scale; and, (iii) rinsing the stock to remove any dust resulting from descaling. The present invention also includes the apparatus for the process.
~ he present invention is more fully understood when the description herein is taken in conjunction with the drawings appended hereto.
In the drawings:
Figure 1 shows a block diagram of the present in~ention process and the arrangement of units in the apparatus of the present invention;
and, Figure 2 shows a bloc~ diagram of a .~ . . ... .
~ 32 preferred embodiment of the present invention.
The present invention involves bright wire drawing and especially to improvements both prior to the stock entering the dies and after the stock is drawn through the dies.
It is an obiect of the present invention to elimlnate acid baths and to avoid related pollution and waste disposal problem~. It's also an important object of the pre~ent invention to minimize pressure die wear and replacement and to provide for decreased energy and costs downstream from the draw through the dies.
Referring now to Figure 1, hot rolled stock, e.g. alloy ~teel, is fed from feeder 2 of its spool to mechanical descaler 4. Here, the scale -- r ~s~
or metal oxide is removed mechanically instead of by acid bath. Generally, this mechanical scaling requires b~nding of the stock in a plurality of directions. In order to maximlze the effect, the stock shoul d move in a path of arcR wherein the arcs are of small enough diameter to stress the stock adequately for the scale to break away or chip off the stock. In a preferred embodiment, thiR is followed by abrading and then cleaning of the stock, e.g. rinse, air, wipe or combination.
As the stock i8 moved down the line by conventional motor driven systems used in pressure die drawing, the descaled stock i~ next ~oated with a lubricant carrier at coating unit 6. This is to hold lubricant on the stock for the draw through he dies. Any available 2(~5~32 lubricant carrier may be used, such as sodium borate, lye, lime or other alkali composition.
Next, the carrier is dried or ~baked~ onto the stock at heating unit 8 and then, at coating unit 10, the stock i9 coated with a lubricant, e.g. by solution flow over the moving stock or by gravity feed and/or mechanically assisted feed of powder or particulate lubricant. Such lubricants are typically ~oap, calcium ~tearate or ~odium stearate or the like.
The stock moves next through one or more pressure dies having final tiameters of decreasing ~i~e. ~ypical cross sections are circular, but other die configurations ar~
possible and these are known in the field. In preferred embodiments, additional lubricant is -?
~ ~5 ~S3 applied before each die to decrease drag and increase efficiency and ease of draw.
A critical step iB now applied to the drawn wire, at buffer unit 14. Here, the product is buffed with a plurality of buffer~. These preferably run at diverse angle~, one or more being at an angle oblique to the direction of flow of the wire. The brushes may also traverse back and forth slightly to reduce wearing one spot on the brushes. Adequate buffing is applied to remove any remaining lubricant and carrier and to enhance the brightnes3 of the finished product.
Normally, thi~ is dry buffing. However, as shown at optional unit~ 15, the buffing may be wet buf $ing ( i . e . including application of a 2(~5'~
liquid, e.g. water) and/or the buffing may be followed by a coater unit to apply an anti-rust coat, e.g. an oil, to the bright wire product.
Coiler unit 16 runs continuously to coil the finished product for subsequent shipping or use.
Figure 2 shows one preferred embodiment of the present invention with respect to mechanical descaling. The mechanical descaler 4 of Figure 2 is the same generically as that shown in Figure 1 and would be included in the overall present invention proces~ and apparatus as ~hown in Figure 1. Thus, Figure 2 depicts in block form one ~et of preferred substep~ for the invention shown in Figure 1. Step A, block ~1, shows bending the stock in at lea~t three dif ferent directions over small arcs to peel the scale.
2(~5~5~
This may be accomplished by reels, rollers or pulleys or drums, although pulleys afford good control and provide stability with no sideways sliding or movement of the stock as it passes over. The arc~ may be, for example, formed from a pulley of a five or six inch diameter, given stock of, for example, one half inch diameter.
In f act, the pulley could be smaller or larger and stlll efect peellng, except that turns through very large arc~, e.g. approaching diameters of half or more of the feed spool, would be ineffective.
Next ~ at block 2 3, step ~, the stock 1~
abraded to remove remaining scale. The abrasion is accomplish~d with a plurality of abrading wheels, e.g. wire brushes, and these are .
Z~5~S3~:
preferably set at different angles to the line of travel of the stock~ -In ~tep C, block 25, the stock is rinsed to remove dust and di610dged scale. As shown in step C-1, block 27, the rinse in this embodiment is a water rinse. In other embodiments, mechanical wipers, air blasts, etc., could be used, but water rinse i~ desired. Also, as shown in block C-2, step 29, a pressurized air wipe is used to remove any water remaining after the rinse.
Referring now to both Figures 1 and 2, the pref erred embodiment steps shown in Figure 2 are followed by the subsequent steps shown in Figure 1. Further, preferred embodiments include the hot buffing and the anti-rust coating steps ~hown 2 ~ 5~3?
as optional units 15 in Figure 1.
Obviously, numerous modification andvariations of the present invention are possible in light of the above teachings. It is therefore understocd that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.
DESCALING AND POST-DIE _R ATMENT AND APPARATUS
The present invention is directed to a bright wire draw process and apparatus. The process and apparatus include mechanical scale removal before pressure die drawing and buffing after drawing. ~igher speeds and more efficient production is achieved.
The commerce of bright wire production has been active for decades and the end use of ~right wire is very diverse. Metal hangers, nail~, medical devices, axles, pins~ shaft~, rods, hooks, etc., are fabricated from bright wire, to 5~53~
name a few. The broad hased market for bright wire includes carbon steel, alloy steel and stainless steel, as well as others.
~ istorically, metal stock, sometimes called hot rolled wire or rod, is manufactured from molten metal and subsequently reworked or sold for reworking into different sizes (and shapes).
These ~tock rolls have been stretched or drawn into lesser diametersl for example, through pressure dies, and have been pretreated to remove scale or oxides, and have been lubricated to prevent rapid wear of the dies. Typically, pretreatment ~or scale removal ~nvolved the use of acid baths, and, even today, production facilities may utilize a batch type pickling proces~ for descaling whereby cranes or hoists Z~5~3~
physically dip rolls of stock into and out of large heated vats of acid and rinse water and dryers. ~his descaling operation is costly due to labor needs, it requires large floor space and expensive equipment is slow, creates long down times for bath changes and may cause pollution problems such as spent acid disposal and acid evaporation.
Some of the very modern facilities for drawing bright wire utilize continuous instead of batch processes, but the wire must be traversed back and forth over pulley~ in the baths to provide adequate bath and rinse tlmes. Further, spent acid, evaporation, floor space and other problems remain even though the batch method is supplanted by continuous flow methods.
2C`5~ 2 Additionally, bright wire production is achieved by the descaling, drawing and brightening of the wire product. This brightening is accomplished by control of limited or no lubrication to the wire as it passes through its final draw ~smallest~ last die). The friction of the die scrapes or otherwise removes any coatings and yields a bright product. While this method is acceptable industry wide, it does cause wear and frequent replacement of the ~inal die and requires substantlal power to p~11 the stock through the die by overcoming the intentional frictional drag.
These problems stated have not been addressed or overcome by the industry or prior art until the present invention. For example, ZC5~3~
good continuous draw technology which in many respects may be today' 5 standard, is exemplified by the 1923 patent to Ernst Boley as V.S. Patent No. 1,470,374. ~his patent describes the state of the art, except for perhaps computerized or modern speed control systems, but these are not the subject of the present invention. ln the ~oley method, three or four baths are utilized, including an acid bath and the problems pertaining thereto as discussed above are not eliminated.
To minimize problems of wire resting in acid baths during down time, ë.g. die change~, etc., the art teaches the use of an intermediate wire collecting and feedinq device as shown in U.S.
Patent No~ 3,354,687 to Walter ~auson. While 2(~!5~ 2 this patent issued more than 40 years after Boley, it confirms the continuing use of acid baths for descaling.
The present invention is directed to a process for drawing and forming a bright wire of a predetermined diameter and cross-s~ction, from s~ock of a greater diameter. The process includes the steps of (a) continuously feeding said ~tock from a ~upply spool through the process; (b) mechanically removlng scale from said stock; (c) applying a coating of lubricant carrier to the de~caled ~tock; (d) applying drying air to the ~tock with the lubricant carrier thereon; (e) applying a lubricant to the carrier-coated stock; ~ f ) drawing the lubricated Z~ 53~
stock through one or more pressure dies to decrease the diameter to the desired predetermined diameter; ~g) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angle~ to the direction of travel of the stock to produce bright wire; and, (h) coiling the resulting bright wire into coils for subsequent use. ~he process i8 continuouC
and the speed of the stock is maintained by conventional drive mechani6ms to feed into the process and to coil off the process at predetermined speeds. In one preferred embodiment of the process, mechanical removal of ~cale includes the following steps: (i) bending the stock in at least three different directions 2(~5~S32 over small enough arcs to cause peeling of scale;
(ii) abrading of the stock to remove any remaining scale; and, (iii) rinsing the stock to remove any dust resulting from descaling. The present invention also includes the apparatus for the process.
~ he present invention is more fully understood when the description herein is taken in conjunction with the drawings appended hereto.
In the drawings:
Figure 1 shows a block diagram of the present in~ention process and the arrangement of units in the apparatus of the present invention;
and, Figure 2 shows a bloc~ diagram of a .~ . . ... .
~ 32 preferred embodiment of the present invention.
The present invention involves bright wire drawing and especially to improvements both prior to the stock entering the dies and after the stock is drawn through the dies.
It is an obiect of the present invention to elimlnate acid baths and to avoid related pollution and waste disposal problem~. It's also an important object of the pre~ent invention to minimize pressure die wear and replacement and to provide for decreased energy and costs downstream from the draw through the dies.
Referring now to Figure 1, hot rolled stock, e.g. alloy ~teel, is fed from feeder 2 of its spool to mechanical descaler 4. Here, the scale -- r ~s~
or metal oxide is removed mechanically instead of by acid bath. Generally, this mechanical scaling requires b~nding of the stock in a plurality of directions. In order to maximlze the effect, the stock shoul d move in a path of arcR wherein the arcs are of small enough diameter to stress the stock adequately for the scale to break away or chip off the stock. In a preferred embodiment, thiR is followed by abrading and then cleaning of the stock, e.g. rinse, air, wipe or combination.
As the stock i8 moved down the line by conventional motor driven systems used in pressure die drawing, the descaled stock i~ next ~oated with a lubricant carrier at coating unit 6. This is to hold lubricant on the stock for the draw through he dies. Any available 2(~5~32 lubricant carrier may be used, such as sodium borate, lye, lime or other alkali composition.
Next, the carrier is dried or ~baked~ onto the stock at heating unit 8 and then, at coating unit 10, the stock i9 coated with a lubricant, e.g. by solution flow over the moving stock or by gravity feed and/or mechanically assisted feed of powder or particulate lubricant. Such lubricants are typically ~oap, calcium ~tearate or ~odium stearate or the like.
The stock moves next through one or more pressure dies having final tiameters of decreasing ~i~e. ~ypical cross sections are circular, but other die configurations ar~
possible and these are known in the field. In preferred embodiments, additional lubricant is -?
~ ~5 ~S3 applied before each die to decrease drag and increase efficiency and ease of draw.
A critical step iB now applied to the drawn wire, at buffer unit 14. Here, the product is buffed with a plurality of buffer~. These preferably run at diverse angle~, one or more being at an angle oblique to the direction of flow of the wire. The brushes may also traverse back and forth slightly to reduce wearing one spot on the brushes. Adequate buffing is applied to remove any remaining lubricant and carrier and to enhance the brightnes3 of the finished product.
Normally, thi~ is dry buffing. However, as shown at optional unit~ 15, the buffing may be wet buf $ing ( i . e . including application of a 2(~5'~
liquid, e.g. water) and/or the buffing may be followed by a coater unit to apply an anti-rust coat, e.g. an oil, to the bright wire product.
Coiler unit 16 runs continuously to coil the finished product for subsequent shipping or use.
Figure 2 shows one preferred embodiment of the present invention with respect to mechanical descaling. The mechanical descaler 4 of Figure 2 is the same generically as that shown in Figure 1 and would be included in the overall present invention proces~ and apparatus as ~hown in Figure 1. Thus, Figure 2 depicts in block form one ~et of preferred substep~ for the invention shown in Figure 1. Step A, block ~1, shows bending the stock in at lea~t three dif ferent directions over small arcs to peel the scale.
2(~5~5~
This may be accomplished by reels, rollers or pulleys or drums, although pulleys afford good control and provide stability with no sideways sliding or movement of the stock as it passes over. The arc~ may be, for example, formed from a pulley of a five or six inch diameter, given stock of, for example, one half inch diameter.
In f act, the pulley could be smaller or larger and stlll efect peellng, except that turns through very large arc~, e.g. approaching diameters of half or more of the feed spool, would be ineffective.
Next ~ at block 2 3, step ~, the stock 1~
abraded to remove remaining scale. The abrasion is accomplish~d with a plurality of abrading wheels, e.g. wire brushes, and these are .
Z~5~S3~:
preferably set at different angles to the line of travel of the stock~ -In ~tep C, block 25, the stock is rinsed to remove dust and di610dged scale. As shown in step C-1, block 27, the rinse in this embodiment is a water rinse. In other embodiments, mechanical wipers, air blasts, etc., could be used, but water rinse i~ desired. Also, as shown in block C-2, step 29, a pressurized air wipe is used to remove any water remaining after the rinse.
Referring now to both Figures 1 and 2, the pref erred embodiment steps shown in Figure 2 are followed by the subsequent steps shown in Figure 1. Further, preferred embodiments include the hot buffing and the anti-rust coating steps ~hown 2 ~ 5~3?
as optional units 15 in Figure 1.
Obviously, numerous modification andvariations of the present invention are possible in light of the above teachings. It is therefore understocd that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.
Claims (20)
1. A process for drawing and forming a bright wire of a predetermined diameter and cross-section from stock of a greater diamerer, which comprises:
(a) Continuously feeding said stock from a supply spool through the process;
(b) Mechanically removing scale from said stock;
(c) Applying a coating of lubricant carrier to the descaled stock;
(d) Applying drying air to the stock with the lubricant carrier thereon;
(e) Applying a lubricant to the carrier-coated stock;
(f) Drawing the lubricated stock through one or more pressure dies to decrease the diameter to the desired predetermined diameter;
(g) Buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (h) Coiling the resulting bright wire into coils or subsequent use;
wherein all of the steps in the aforesaid process are continuous, and the speed of the stock is maintained by conventional drive mechanisms to feed into the process and to coil off the process at predetermined speeds.
(a) Continuously feeding said stock from a supply spool through the process;
(b) Mechanically removing scale from said stock;
(c) Applying a coating of lubricant carrier to the descaled stock;
(d) Applying drying air to the stock with the lubricant carrier thereon;
(e) Applying a lubricant to the carrier-coated stock;
(f) Drawing the lubricated stock through one or more pressure dies to decrease the diameter to the desired predetermined diameter;
(g) Buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (h) Coiling the resulting bright wire into coils or subsequent use;
wherein all of the steps in the aforesaid process are continuous, and the speed of the stock is maintained by conventional drive mechanisms to feed into the process and to coil off the process at predetermined speeds.
2. The process of claim 1 wherein a plurality of sequential dies are included in step (f) and each sequential die has a final diameter less than that of any die preceding it and the stock is lubricated before each die.
3. The process of claim 2 wherein said plurality of dies are in a straight line draw sequence.
4. The process of claim 1 wherein said mechanical removal of scale in step (b) includes bending the stock in at least three different directions over small enough arcs to cause peeling of scale, and includes subsequent abrading of the stock.
5. The process of claim 4 wherein said mechanical removal of scale includes the following steps:
(i) Bending the stock in at least three different directions over small enough arcs to cause peeling of scale;
(ii) Abrading of the stock to remove any remaining scale; and, (iii) Rinsing the stock to remove any dust resulting from descaling.
(i) Bending the stock in at least three different directions over small enough arcs to cause peeling of scale;
(ii) Abrading of the stock to remove any remaining scale; and, (iii) Rinsing the stock to remove any dust resulting from descaling.
6. The process of claim 5 wherein said abrading is accomplished with a plurality of wire brushes set at preselected angles to the path of travel of said stock.
7. The process of claim 5 wherein said rinsing includes water ringing and pressurized air wiping.
8. The process of claim 1 wherein said buffing in step (g) is a dry buffing step.
9. The process of claim 1 wherein said buffing in step (g) is a wet buffing step.
10. The process of claim 1 wherein after said buffing in step (g) and prior to coiling, the stock is coated with a rust-resistant oil coating.
11. An apparatus for continuous drawing and forming of a bright wire of a predetermined diameter and cross-section from stock of a greater diameter, and includes conventional drive mechanisms for maintaining the speed of the stock entering, passing through and exiting said apparatus, which further comprises the following units:
(a) A mechanical descaler;
(b) A lubricant carrier feed mechanism for applying a carrier to the stock;
(c) A lubricant feed mechanism for applying a lubricant to the stock;
(d) One or more pressure die units, each having a final diameter less than that of the original stock and each having a final diameter less than that of any preceding dies;
(e) A buffer mechanism including a plurality of buffers for removing any carrier and lubricant from the stock and for buffing and brightening the stock; and, (f) A coiler to wind resulting bright wire.
(a) A mechanical descaler;
(b) A lubricant carrier feed mechanism for applying a carrier to the stock;
(c) A lubricant feed mechanism for applying a lubricant to the stock;
(d) One or more pressure die units, each having a final diameter less than that of the original stock and each having a final diameter less than that of any preceding dies;
(e) A buffer mechanism including a plurality of buffers for removing any carrier and lubricant from the stock and for buffing and brightening the stock; and, (f) A coiler to wind resulting bright wire.
12. The apparatus of claim 11 wherein lubricant feed mechanisms are included before each pressure die unit.
13. The apparatus of claim 11 wherein said bending means is a plurality of pulleys arranged sequentially at different angles and having diameters small enough to have arcs of travel for said stock which are capable of causing scale to peel from said stock.
14. The apparatus of claim 11 wherein said mechanical scaler also includes an abrading mechanism downstream from said plural bending means.
15. The apparatus of claim 12 wherein said mechanical descaler also includes water rinsing means and air wiping means.
16. The apparatus of claim 11 wherein said buffer means is a dry buffing means.
17. The apparatus of claim 11 wherein said buffer means is a wet buffing means.
18. The apparatus of claim 11 which further includes anti-rust oil coating means located after said buffer means and before said coiler.
19. The apparatus of claim 16 which further includes anti-rust coating means located after and adjacent to said dry buffing means.
20. The apparatus of claim 17 which further includes anti-rust coating means located after and adjacent to said dry buffing means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75445591A | 1991-09-03 | 1991-09-03 | |
| US07/754,455 | 1991-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2054632A1 true CA2054632A1 (en) | 1993-03-04 |
Family
ID=25034865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2054632 Abandoned CA2054632A1 (en) | 1991-09-03 | 1991-10-31 | Continuous wire drawing process with mechanical descaling and post-die treatment and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2054632A1 (en) |
-
1991
- 1991-10-31 CA CA 2054632 patent/CA2054632A1/en not_active Abandoned
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