GB2032577A - Continuous costing rollers - Google Patents
Continuous costing rollers Download PDFInfo
- Publication number
- GB2032577A GB2032577A GB7931930A GB7931930A GB2032577A GB 2032577 A GB2032577 A GB 2032577A GB 7931930 A GB7931930 A GB 7931930A GB 7931930 A GB7931930 A GB 7931930A GB 2032577 A GB2032577 A GB 2032577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- continuous casting
- basic material
- resistant
- intermediate layer
- casting roller
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000009749 continuous casting Methods 0.000 claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 22
- 238000005260 corrosion Methods 0.000 claims abstract description 22
- 239000003518 caustics Substances 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 16
- 239000011253 protective coating Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Continuous Casting (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Coating By Spraying Or Casting (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
In a previously known construction of continuous casting roller having a corrosion and wear resistant outer layer, the outer layers can crack in use, allowing corrosive agents to penetrate to the basic material of the roller, resulting in erosion of the basic material which in turn can break up the adhesion of the outer layer thereto. According to the present invention, an intermediate layer (3) of ductile, corrosion-resistant material is interposed between the outer layer (2) and the basic material (1) which prevents corrosive media reaching the basic material even if the outer layer breaks down in use. <IMAGE>
Description
SPECIFICATION
Continuous casting roller with a corrosion resistant and wear-resistant protective coating
The invention relates to a continuous casting roller with a corrosion resistant, wear resistant protective outer layer.
It is known to make the basic material from a continuous casting roller more resistant to tension cracks by spraying a protective coating on to it. It is also known to sinter a protective coating, which may or may not have been sprayed or, on to the basic material in order to improve the adhesive bond. Sprayed coatings normally consist of a mixture of metal and metal oxides, while sintered coatings are usually purely metallic.
In known continuous casting rollers provided with the protective coatings of the kind described above, bending stresses cause cracks to appear in the crystals of the coating, which allow corrosive agents to penetrate during operation. In this way the adhesion of the protective coating to the basic material is destroyed as the result of corrosion of the basic material.
The aim of the invention is to provide a continuous casting roller having a corrosion resistant, wear resistant protective coating which affords protection of the basic material against corrosion even under high bending stress and the resultant cracking.
This aim is achieved, according to the invention by the provision of a ductile, corrosion resistant intermediate layer, acting as a buffer layer, with a thickness of not more than 0.1 mm, a melting point of at least 10000 and a breaking elongation of at least 10% between the basic material of the roller and the wear-resistant and corrosionresistant outer coating. A preferred material for this intermediate layer comprises at least one of nickel and a nickel alioy.
Advantageously, the intermediate layer is applied electrolytically and the outer coating is sintered on to the intermediate layer.
The provision of the ductile intermediate layer in the continuous casting roller according to the invention prevents corrosive media from penetrating into the basic material, even under high bending stress. Thus, a continuous casting roller is obtained which is both corrosion resistant and aiso has a wear-resistant surface. Even if tension cracks appear in the outer coating, these cracks are limited to the thickness of the outer coating.
The accompanying drawing diagrammatically shows a coolable continuous casting roller provided with a multi-layer protective coating according to the invention.
In this drawing, the basic material 1 of the roller is provided with an outer coating 2 sintered on to a ductile intermediate layer 3.
The roller shown in the drawing is internally cooled, having corresponding cooling channels and inlets and outlets for the cooling medium provided inside it. This known construction will not be described more fully here.
1. A continuous casting roller with a corrosion resistant, wear resistant protective coating wherein, between the basic material of the roller and the wear-resistant, corrosion resistant outer coating, there is provided a ductile corrosion resistant intermediate layer which is not more than 0.1 mm thick, has a melting point of at least 10000 and a breaking elongation of at least 10%.
2. A continuous casting roller according to
Claim 1 wherein the material of the intermediate layer comprises at least one of nickel and a nickel alloy.
3. A continuous casting roller according to
Claim 1 or Claim 2, wherein the intermediate layer is applied electrolytically to the basic material and the outer coating is sintered on to the intermediate layer.
4. A continuous casting roller according to
Claim 1 and substantially as herein described.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A continuous casting roller with a corrosion resistant, wear resistant protective coating wherein, between the basic material of the roller and the wear-resistant, corrosion resistant outer coating, there is provided a ductile corrosion resistant intermediate layer which is not more than 0.1 mm thick, has a melting point of at least 10000 and a breaking elongation of at least 10%.
2. A continuous casting roller according to
Claim 1 wherein the material of the intermediate layer comprises at least one of nickel and a nickel alloy.
3. A continuous casting roller according to
Claim 1 or Claim 2, wherein the intermediate layer is applied electrolytically to the basic material and the outer coating is sintered on to the intermediate layer.
4. A continuous casting roller according to
Claim 1 and substantially as herein described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2840902A DE2840902C2 (en) | 1978-09-18 | 1978-09-18 | Continuous casting roll with corrosion-resistant, wear-resistant sintered protective layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2032577A true GB2032577A (en) | 1980-05-08 |
| GB2032577B GB2032577B (en) | 1983-05-18 |
Family
ID=6049945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7931930A Expired GB2032577B (en) | 1978-09-18 | 1979-09-14 | Continuous casting rollers |
Country Status (10)
| Country | Link |
|---|---|
| JP (2) | JPS5542194A (en) |
| AU (1) | AU528156B2 (en) |
| BE (1) | BE878827A (en) |
| CA (1) | CA1139524A (en) |
| DE (1) | DE2840902C2 (en) |
| FR (1) | FR2435983A1 (en) |
| GB (1) | GB2032577B (en) |
| IT (1) | IT1162754B (en) |
| LU (1) | LU81481A1 (en) |
| NL (1) | NL7904930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7926547B2 (en) | 2005-10-20 | 2011-04-19 | Siemens Vai Metals Technologies Gmbh & Co. | Strand guiding roller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4027225C2 (en) * | 1990-08-24 | 1993-12-16 | Mannesmann Ag | Process for the production of a supporting and guiding roller of a continuous caster |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1132849A (en) * | 1965-06-22 | 1968-11-06 | Telcon Metals Ltd | Improvements in and relating to hot rolling |
| FR2191948A1 (en) * | 1972-07-07 | 1974-02-08 | Marichal Ketin Et Cie | Rolling mill roll cylinder - for eg wire is composed of a fatigue resistant core and a hard wear resistant facing |
| JPS52813B2 (en) * | 1973-05-11 | 1977-01-11 | ||
| US4037646A (en) * | 1975-06-13 | 1977-07-26 | Sumitomo Metal Industries, Ltd. | Molds for continuously casting steel |
| JPS5240608A (en) * | 1975-09-26 | 1977-03-29 | Itsukou Watanabe | Paper screening apparatus |
| CA1079016A (en) * | 1976-03-25 | 1980-06-10 | Donald S. Greif | Water insensitive starch fibers and a process for the production thereof |
| JPS5312447A (en) * | 1976-07-22 | 1978-02-03 | Nisshin Oil Mills Ltd | Production of dry tofu |
| DE2636199A1 (en) * | 1976-08-09 | 1978-02-16 | Mannesmann Ag | PROCESS FOR THE MANUFACTURING OF TREATED ROLLS FOR CONTINUOUS CASTING PLANTS |
| JPS5849178B2 (en) * | 1976-08-23 | 1983-11-02 | 日本セキソ−工業株式会社 | honeycomb sand germanchi panel |
| FR2367557A1 (en) * | 1976-10-15 | 1978-05-12 | Usinor | GUIDANCE ROLLERS IMPROVEMENTS, ESPECIALLY FOR CONTINUOUS CASTING INSTALLATION |
-
1978
- 1978-09-18 DE DE2840902A patent/DE2840902C2/en not_active Expired
-
1979
- 1979-06-25 NL NL7904930A patent/NL7904930A/en not_active Application Discontinuation
- 1979-07-10 LU LU81481A patent/LU81481A1/en unknown
- 1979-07-11 IT IT24286/79A patent/IT1162754B/en active
- 1979-07-23 FR FR7919382A patent/FR2435983A1/en active Granted
- 1979-07-25 AU AU49216/79A patent/AU528156B2/en not_active Ceased
- 1979-08-29 JP JP11017579A patent/JPS5542194A/en active Pending
- 1979-09-07 CA CA000335185A patent/CA1139524A/en not_active Expired
- 1979-09-14 GB GB7931930A patent/GB2032577B/en not_active Expired
- 1979-09-17 BE BE0/197179A patent/BE878827A/en not_active IP Right Cessation
-
1982
- 1982-06-14 JP JP1982088629U patent/JPS584262U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7926547B2 (en) | 2005-10-20 | 2011-04-19 | Siemens Vai Metals Technologies Gmbh & Co. | Strand guiding roller |
Also Published As
| Publication number | Publication date |
|---|---|
| AU528156B2 (en) | 1983-04-14 |
| FR2435983B1 (en) | 1983-03-11 |
| CA1139524A (en) | 1983-01-18 |
| IT7924286A0 (en) | 1979-07-11 |
| FR2435983A1 (en) | 1980-04-11 |
| JPS5542194A (en) | 1980-03-25 |
| AU4921679A (en) | 1980-03-27 |
| BE878827A (en) | 1980-01-16 |
| LU81481A1 (en) | 1979-10-31 |
| JPS584262U (en) | 1983-01-12 |
| GB2032577B (en) | 1983-05-18 |
| DE2840902A1 (en) | 1980-03-27 |
| NL7904930A (en) | 1980-03-20 |
| IT1162754B (en) | 1987-04-01 |
| DE2840902C2 (en) | 1982-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |