US3018190A - Method and apparatus for treating metallic strands in hot dip coating - Google Patents
Method and apparatus for treating metallic strands in hot dip coating Download PDFInfo
- Publication number
- US3018190A US3018190A US58270A US5827060A US3018190A US 3018190 A US3018190 A US 3018190A US 58270 A US58270 A US 58270A US 5827060 A US5827060 A US 5827060A US 3018190 A US3018190 A US 3018190A
- Authority
- US
- United States
- Prior art keywords
- strand
- coating
- sodium
- aluminum
- pretreatment
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000003618 dip coating Methods 0.000 title description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 229910052708 sodium Inorganic materials 0.000 claims description 27
- 239000011734 sodium Substances 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
- C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
Definitions
- This invention relates to a process and an apparatus for treating metallic strands prior to hot dip coating and particularly where the coating metal is aluminum or an aluminum alloy.
- the strand prior to entering the aluminum bath according to the Oganowski patent, was given a pretreatment as described and claimed in the Sendzimir Patents Nos. 2,110,893 and 2,136,957, wherein the strand is first chemically cleaned and then dried and then passed through a high temperature reduction furnace and then a controlled cooling furnace before entering the molten coating metal.
- FIGURE 1 is a fragmentary cross-sectional view of a structure for supplying sodium vapor to the strand after the pretreatment portion of the apparatus and prior to its entry into the coating pot.
- FIGURE 2 is an enlarged elevational view with parts broken away of a portion of the structure of FIGURE 1.
- I provide a holder for metallic sodium in communication with a tubular portion of the apparatus connecting the pretreatment apparatus with the coating pot.
- the holder is generally tubular and is disposed at an angle with its upper end communicating with the said tubular portion.
- the connection between the tubular portion of the apparatus and the holder, and the holder itself, may be insulated such that the heat of the strand melts the metallic sodium and causes it to be vaporized.
- Such reaction products as may be formed with the metallic sodium and 2v which may be principally sodium hydroxide, will. fall to the bottom of the holder so that the. molten sodium before vaporization etfectively floats on top of its. reaction products, whereby the molten elemental sodium is. closest to the hot strand from which it. can absorb heatfor vaporization.
- the end of the pretreatment apparatus (this. may be the top of the turn-up box) is indicated at 19.
- a tubular. member 20 connects the exit from the member 19 with the bottom of the coating pot (not shown).
- the strand 15 passes vertically upward through the member 20.
- a pipe through whichv a non-oxidizing or a reducing gas is fed, which gas flows oppositely to. the direction of movement of the strand and flows through a portion at least of the pretreatment apparatus.
- the member 20 is provided with an opening 22 over which is secured, by welding or other suitable means, a tubular member 23.
- the precise angle at which the member 23 isdisposed is not critical but it should be upwardly directed with respect to the. opening 22.
- a collar or the like 24 Suitablysecured to the lower end of the member 23 is a collar or the like 24 provided with bolt holes 25 and having the annular shoulder 26.
- the member 23 is closed at its. lower end by means of a member 27 which may be similar in configuration to the member 24 and is provided with the mating bolt holes 28.
- the member 27 is either solid or plugged as. at 29 and has an annular groove '30 into which. the annular shoulder 26 is adapted to enter.
- a suitable gasket 31 is seated between the shoulder 26 and the groove 30 to provide a gas-tight seal.
- the member 27 is secured in place by means of bolts 32.
- the member 23 and its associated parts thus constitute a holder within which is placed a cartridge indicated generally at 33 in FIGURE 1 and shown in detail in FIG- URE 2.
- This cartridge is simply a piece of thin walled steel tubing plugged at its lower end as at 35 and open at its upper end and provided with a wire loop 34 for handling.
- the metallic sodium is placed in the cartridge 33 and the cartridge is then slipped into place in the holder 23 and held in place by the member 27.
- the molten sodium has been indicated diagrammatically at 36 and the molten reaction products at 37, and it will be seen that the molten elemental sodium floats on top of its reaction products Where it is subjected to the heat of the strand 15.
- the use of the metal cartridge contributes greatly to safety in handling of the metallic sodium.
- the metallic sodium is depleted, it is a simple matter to remove the cartridge 33 and replace it with a fresh cartridge charged with fresh metallic sodium.
- the heat of the strand melts the metallic sodium and brings about its vaporization.
- the rate of vaporization of the molten sodium is a function of the amount of radiant heat absorption and of the amount of insulation around the holder 23 and the tubular element 20. Such insulation is shown at 38.
- the holder 23 and the adjacent portion of the member 20 must be well insulated.
- the proper amount of insulation for the particular size strand being coated can readily be determined by one skilled in the art.
- the basic function of the sodium vapor in this process is to modify the oxide film which may be on the surface of the bath of coating metal through which the strand ultimately passes, and that the sodium may cleanse the molten aluminum which contacts the sodium treated strand, of dissolved gases and entrapped microscopic oxide particles, as well as scavenging the atmosphere of minor percentages of oxygen which may have infiltrated this portion of the apparatus.
- a structure according to claim 1, wherein said last named means comprises a tubular open top cartridge removably disposed in said branch fitting.
- a structure according to claim 2, wherein said cartridge is of thin walled steel tubing and is provided with hand grip means.
- the apparatus to the coating pot passes through a tubular member into which a non-oxidizing gas is fed; the steps of enhancing the wettability of said strand by said aluminum and thus improving the quality and appearance of the aluminum coated strand, which include causing said strand while hot and before it enters said coating pot, to melt and vaporize metallic sodium, causing said vaporized sodium to contact the strand in admixture with said non-oxidizing gas, and protecting said strand from the atmosphere up to its entry into the coating metal.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
- Coating With Molten Metal (AREA)
Description
Jan. 23, 1962 E. L. KNAPP METHOD AND APPARATUS FOR TREATING METALLIC STRANDS IN HOT DIP COATING Filed Sept 26. 1960 JNVEN TOR. EAIZLE L/(NA PP t ATTORNEYS United States Patent Ofilice 3,018,190 Patented Jan. 23, 1962;
METHGD AND APPARATUS FOR TREATING METALLZQ STRANDS IN HOT DIP. COATING Earle L. Knapp, Kansas City, Mo., assignor to Armco Steel Corporation, Middletown, Ohio, a corporation of Ohio F iied Sept. 26, 1960, Ser. No. 58,270 6 Claims. (Cl. 11751) This invention relates to a process and an apparatus for treating metallic strands prior to hot dip coating and particularly where the coating metal is aluminum or an aluminum alloy.
In the Oganowski Patent No. 2,437,918 some of the problems in connection with obtaining good coatings of an aluminum or aluminum alloy on metallic strands by the hot dip method were discussed and in said Oganowski patent it was taught to provide a source of sodium vapor in a bell dipping into the coating metal so that'the sodium vapor would have access to the strand and would provide upon the surface of the bath through which'the strand entered a powdery layer comprising sodium aluminate. While said patent referred to sodium, it was explained that substantially like results could be obtained with other alkali metals as, for example, potassium and lithium.
The strand, prior to entering the aluminum bath according to the Oganowski patent, was given a pretreatment as described and claimed in the Sendzimir Patents Nos. 2,110,893 and 2,136,957, wherein the strand is first chemically cleaned and then dried and then passed through a high temperature reduction furnace and then a controlled cooling furnace before entering the molten coating metal.
In the said Oganowski patent, the strand entered downwardly into the bath and passed around a roll and emerged from the bath outside the hood.
In my earlier Patent No. 2,914,423 dated November 24, 1959, I disclosed and claimed an apparatus and a method for coating metallic strands in which the strand passed vertically upwardly through a hole in the bottom of a coating pot. The strand had been pretreated according to the Sendzimir patents and then passed through a so-called turn-up box and traveled vertically upward through the coating pot and on to a finishing operation.
With the foregoing considerations in mind, it is an object of the present invention to apply the teachings of the Oganowski patent to the coating of the strand as described in my said earlier Patent No. 2,914,423. While according to the present invention I utilize sodium vapor for the same ultimate purpose as Oganowski, I utilize it in a difierent way involving novel apparatus elements and novel method steps of which I shall now describe exemplary embodiments.
Reference is made to the drawing forming a part hereof and in which:
FIGURE 1 is a fragmentary cross-sectional view of a structure for supplying sodium vapor to the strand after the pretreatment portion of the apparatus and prior to its entry into the coating pot.
FIGURE 2 is an enlarged elevational view with parts broken away of a portion of the structure of FIGURE 1.
Briefly, in the practice of the invention I provide a holder for metallic sodium in communication with a tubular portion of the apparatus connecting the pretreatment apparatus with the coating pot. The holder is generally tubular and is disposed at an angle with its upper end communicating with the said tubular portion. The connection between the tubular portion of the apparatus and the holder, and the holder itself, may be insulated such that the heat of the strand melts the metallic sodium and causes it to be vaporized. Such reaction products as may be formed with the metallic sodium and 2v which may be principally sodium hydroxide, will. fall to the bottom of the holder so that the. molten sodium before vaporization etfectively floats on top of its. reaction products, whereby the molten elemental sodium is. closest to the hot strand from which it. can absorb heatfor vaporization.
Referring now in greater detail to the drawings, the end of the pretreatment apparatus. (this. may be the top of the turn-up box) is indicated at 19. A tubular. member 20 connects the exit from the member 19 with the bottom of the coating pot (not shown). The strand 15 passes vertically upward through the member 20. At 21 is shown a pipe through whichv a non-oxidizing or a reducing gas is fed, which gas flows oppositely to. the direction of movement of the strand and flows through a portion at least of the pretreatment apparatus.
According. to the present invention, the member 20 is provided with an opening 22 over which is secured, by welding or other suitable means, a tubular member 23. The precise angle at which the member 23 isdisposed is not critical but it should be upwardly directed with respect to the. opening 22. Suitablysecured to the lower end of the member 23 is a collar or the like 24 provided with bolt holes 25 and having the annular shoulder 26.
The member 23 is closed at its. lower end by means of a member 27 which may be similar in configuration to the member 24 and is provided with the mating bolt holes 28. The member 27 is either solid or plugged as. at 29 and has an annular groove '30 into which. the annular shoulder 26 is adapted to enter. A suitable gasket 31 is seated between the shoulder 26 and the groove 30 to provide a gas-tight seal.
The member 27 is secured in place by means of bolts 32.
The member 23 and its associated parts thus constitute a holder within which is placed a cartridge indicated generally at 33 in FIGURE 1 and shown in detail in FIG- URE 2. This cartridge is simply a piece of thin walled steel tubing plugged at its lower end as at 35 and open at its upper end and provided with a wire loop 34 for handling.
The metallic sodium is placed in the cartridge 33 and the cartridge is then slipped into place in the holder 23 and held in place by the member 27. In FIGURE 1 the molten sodium has been indicated diagrammatically at 36 and the molten reaction products at 37, and it will be seen that the molten elemental sodium floats on top of its reaction products Where it is subjected to the heat of the strand 15. The use of the metal cartridge contributes greatly to safety in handling of the metallic sodium. When the metallic sodium is depleted, it is a simple matter to remove the cartridge 33 and replace it with a fresh cartridge charged with fresh metallic sodium. The heat of the strand melts the metallic sodium and brings about its vaporization. The rate of vaporization of the molten sodium is a function of the amount of radiant heat absorption and of the amount of insulation around the holder 23 and the tubular element 20. Such insulation is shown at 38. With very small cross-sectional area strands, the holder 23 and the adjacent portion of the member 20 must be well insulated. The larger the cross-sectional area of the strand being treated, the less insulation is required. I have found that if the strand is wire and if its diameter is A1, inch, no insulation is required. The proper amount of insulation for the particular size strand being coated can readily be determined by one skilled in the art.
While I do not wish to be bound by theory, it is my opinion that the basic function of the sodium vapor in this process is to modify the oxide film which may be on the surface of the bath of coating metal through which the strand ultimately passes, and that the sodium may cleanse the molten aluminum which contacts the sodium treated strand, of dissolved gases and entrapped microscopic oxide particles, as well as scavenging the atmosphere of minor percentages of oxygen which may have infiltrated this portion of the apparatus.
Regardless of any theory as to what the sodium accomplishes, it appears to improve the wetting characteristics of the molten aluminum on the clean strand so that the aluminum appears to be more fluid and the resultant coating is much more brilliant.
When I speak of molten aluminum in the claims, it will be understood that this language is inclusive of alloys of aluminum with small percentages of such metals as silicon, beryllium, magnesium and the like.
Having now fully described my invention, what I claim as new and desire to secure by Letters Patent is:
1. In an apparatus for coating a metallic strand with molten aluminum, wherein the strand, after undergoing a pretreatment, is caused to move vertically upward and through a hole in the bottom of a coating pot containing molten aluminum, and wherein said strand, in passing from the pretreatment portion of the apparatus to the coating pot, passes through a tubular member into which a non-oxidizing gas is fed; a branch fitting disposed at an angle'less than a right angle with respect to said tubular member and communicating therewith in an upward direction, said branch fitting having means for closingit at its lower end, and means for holding a supply of metallic sodium in said branch fitting.
2. A structure according to claim 1, wherein said last named means comprises a tubular open top cartridge removably disposed in said branch fitting.
3. A structure according to claim 2, wherein said cartridge is of thin walled steel tubing and is provided with hand grip means.
4. A structure according to claim 1, wherein the closing means for said branch fitting has sealing means providing a gas-tight seal with said fitting.
5. A structure according to claim 1, wherein said tubular member, at the region of said branch fitting, and said branch fitting, are covered with heat insulating material.
6. In a process of coating a metal strand with molten aluminum, wherein the strand, after undergoing a pretreatment, is caused to move vertically upward and through a hole in the bottom of a coating pot containing molten aluminum, and wherein said strand, in passing from the pretreatment portion of. the apparatus to the coating pot, passes through a tubular member into which a non-oxidizing gas is fed; the steps of enhancing the wettability of said strand by said aluminum and thus improving the quality and appearance of the aluminum coated strand, which include causing said strand while hot and before it enters said coating pot, to melt and vaporize metallic sodium, causing said vaporized sodium to contact the strand in admixture with said non-oxidizing gas, and protecting said strand from the atmosphere up to its entry into the coating metal.
References Cited in the tile of this patent UNITED STATES PATENTS Knapp Nov. 24, 1959
Claims (1)
- 6. IN A PROCESS OF COATING A METAL STRAND WITH MOLTEN ALUMINUM, WHEREIN THE STRAND, AFTER UNDERGOING A PRETREATMENT, IS CAUSED TO MOVE VERTICALLY UPWARD AND THROUGH A HOLE IN THE BOTTOM OF A COATING POT CONTAINING MOLTEN ALUMINUM, AND WHEREIN SAID STRAND, IN PASSING FROM THE PRETREATMENT PORTION OF THE APPARATUS TO THE COATING POT, PASSES THROUGH A TUBULAR MEMBER INTO WHICH A NON-OXIDIZING GAS IS FED; THE STEPS OF ENHANCING THE WETTABILITY OF SAID STRAND BY SAID ALUMINUM AND THUS IMPROVING THE QUALITY AND APPEARANCE OF THE ALUMINUM COATED STRAND, WHICH INCLUDE CAUSING SAID STRAND WHILE HOT AND BEFORE IT ENTERS SAID COATING POT, TO MELT AND VAPORIZE METALLIC SODIUM, CAUSING SAID VAPORIZED SODIUM TO CONTACT THE STRAND IN ADMIXTURE WITH SAID NON-OXIDIZING GAS, AND PROTECTING SAID STRAND FROM THE ATMOSPHERE UP TO ITS ENTRY INTO THE COATING METAL.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58270A US3018190A (en) | 1960-09-26 | 1960-09-26 | Method and apparatus for treating metallic strands in hot dip coating |
BE608128A BE608128A (en) | 1960-09-26 | 1961-09-13 | Method and apparatus for the treatment of metal wires. |
GB34512/61A GB918372A (en) | 1960-09-26 | 1961-09-26 | Methods and apparatus for treating metallic strands in hot dip coating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58270A US3018190A (en) | 1960-09-26 | 1960-09-26 | Method and apparatus for treating metallic strands in hot dip coating |
Publications (1)
Publication Number | Publication Date |
---|---|
US3018190A true US3018190A (en) | 1962-01-23 |
Family
ID=22015749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US58270A Expired - Lifetime US3018190A (en) | 1960-09-26 | 1960-09-26 | Method and apparatus for treating metallic strands in hot dip coating |
Country Status (3)
Country | Link |
---|---|
US (1) | US3018190A (en) |
BE (1) | BE608128A (en) |
GB (1) | GB918372A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3457097A (en) * | 1964-02-10 | 1969-07-22 | Yawata Seitetsu Kk | Method of coating ferrous metal with molten aluminum |
US4431688A (en) * | 1981-03-10 | 1984-02-14 | Kokoku Steel-Wire Ltd. | Process and installation for the high-velocity dip-coating of filament like materials |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2216519A (en) * | 1938-01-03 | 1940-10-01 | Bundy Tubing Co | Making tubing |
US2405592A (en) * | 1941-06-11 | 1946-08-13 | Arthur J Mauger | Process of galvanizing |
US2437919A (en) * | 1945-07-19 | 1948-03-16 | American Rolling Mill Co | Process and means for improving the adherence of aluminum coatings |
US2458509A (en) * | 1942-08-28 | 1949-01-11 | Interchem Corp | Apparatus for tinning steel |
US2914423A (en) * | 1955-05-12 | 1959-11-24 | Armco Steel Corp | Method and apparatus for metallic coating of metallic strands |
-
1960
- 1960-09-26 US US58270A patent/US3018190A/en not_active Expired - Lifetime
-
1961
- 1961-09-13 BE BE608128A patent/BE608128A/en unknown
- 1961-09-26 GB GB34512/61A patent/GB918372A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2216519A (en) * | 1938-01-03 | 1940-10-01 | Bundy Tubing Co | Making tubing |
US2405592A (en) * | 1941-06-11 | 1946-08-13 | Arthur J Mauger | Process of galvanizing |
US2458509A (en) * | 1942-08-28 | 1949-01-11 | Interchem Corp | Apparatus for tinning steel |
US2437919A (en) * | 1945-07-19 | 1948-03-16 | American Rolling Mill Co | Process and means for improving the adherence of aluminum coatings |
US2914423A (en) * | 1955-05-12 | 1959-11-24 | Armco Steel Corp | Method and apparatus for metallic coating of metallic strands |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3457097A (en) * | 1964-02-10 | 1969-07-22 | Yawata Seitetsu Kk | Method of coating ferrous metal with molten aluminum |
US4431688A (en) * | 1981-03-10 | 1984-02-14 | Kokoku Steel-Wire Ltd. | Process and installation for the high-velocity dip-coating of filament like materials |
Also Published As
Publication number | Publication date |
---|---|
GB918372A (en) | 1963-02-13 |
BE608128A (en) | 1962-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2374926A (en) | Process of coating with tin or other metals | |
US2570906A (en) | Process for coating metallic objects with other metals | |
EP0060225B1 (en) | Process for the high-velocity dip-coating of filament like materials in a molten metal bath | |
US2544670A (en) | Method of forming composite aluminum-steel parts by casting aluminum onto steel andbonding thereto | |
US2428523A (en) | Apparatus for and method of coating metal strip at high speeds | |
US2774686A (en) | Hot dip aluminum coating process | |
GB1386645A (en) | Method of casting cooling elements | |
US3018190A (en) | Method and apparatus for treating metallic strands in hot dip coating | |
JPS5915980B2 (en) | Method for producing thick pure aluminum coating on small diameter pipe material | |
US2497119A (en) | Method of coating ferrous metals with aluminum | |
US2437528A (en) | High-temperature cleaning of steel strip, including removing ferrous chloride therefrom | |
US2322787A (en) | Method and apparatus for melting metals | |
CN112921261A (en) | Process method for hot galvanizing of steel wire and obtaining thick alloy coating | |
US4117580A (en) | Manufacture of bearings | |
US2046036A (en) | Method of coating ferrous bodies with other metals | |
GB796242A (en) | Coating of strand-like metal bodies with molten metal | |
GB1073871A (en) | Metal-coating method and product | |
US3597261A (en) | Method of coating copper plated strands with zinc | |
CN104975252A (en) | Plating-assistant-free production method for wire rod hot-dip zinc-5% aluminum | |
US2809407A (en) | Method of making a composite metal article | |
US3758333A (en) | Method for galvanizing | |
US3457097A (en) | Method of coating ferrous metal with molten aluminum | |
US3051587A (en) | Method of treating metallic strip with sodium vapor | |
US3409978A (en) | Metal cladding process | |
US3396048A (en) | Process for aluminizing metal |