IE53410B1 - Lubricating method for use when cold working aluminium and alloys thereof - Google Patents
Lubricating method for use when cold working aluminium and alloys thereofInfo
- Publication number
- IE53410B1 IE53410B1 IE2226/82A IE222682A IE53410B1 IE 53410 B1 IE53410 B1 IE 53410B1 IE 2226/82 A IE2226/82 A IE 2226/82A IE 222682 A IE222682 A IE 222682A IE 53410 B1 IE53410 B1 IE 53410B1
- Authority
- IE
- Ireland
- Prior art keywords
- rolling
- oil
- product
- alloys
- additives
- Prior art date
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 13
- 230000001050 lubricating effect Effects 0.000 title claims description 6
- 229910045601 alloy Inorganic materials 0.000 title claims description 5
- 239000000956 alloy Substances 0.000 title claims description 5
- 239000004411 aluminium Substances 0.000 title claims description 5
- 238000005482 strain hardening Methods 0.000 title 1
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000005097 cold rolling Methods 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 7
- 239000000839 emulsion Substances 0.000 claims abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 238000005461 lubrication Methods 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 15
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002194 fatty esters Chemical class 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
- Metal Rolling (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to the rolling of aluminum and, more particularly, lubrication for cold rolling. It is recommended to prelubricate aluminum before rolling, with mineral or synthetic oils, modified by additives, or with solutions or emulsions of said oils. The prelubrication avoids the formation of many surface defects during cold rolling.
[FR2512702A1]
Description
Price 90p The invention relates to a lubricating method for use in cold processing aluminium and alloys thereof, and particularly in cold rolling into strips.
It is known that cold rolling of strips of aluminium has been carried out for many years, with lubrication by mineral or synthetic oil, with or without additives, thereby simultaneously lubricating and cooling the product and tools (rolls); the oil is generally paraffin oil; however, by reason (a) of the limited performance thus obtained (speed, cold rolling rate, etc.) and (b) of the dangers of ignition and fire, the oil has been replaced by an essentially aqueous medium, consisting of an emulsion or solution of oil in water, containing up to about 30% (by weight) of oil.
This method, which quite certainly leads to improved performance, is however limited by the appearance of surface flaws, which are found either in the form of longitudinal strips (parallel with the direction of rolling) varying in appearance and known as the zone of different mattness (z.d.m.), 5 or in the form of local flaws (halos, discontinuous flaws known as "flameches), or in the form of zones of different roughness (z.d.r.).
Applicants have found that it was possible to eliminate such flaws when cold processing is carried out on a prelubricated product, using a mineral or synthetic oil which may contain certain additives such as fatty acids, fatty • alcohols, fatty esters, fatty amines or amides, sulfur-containing or phosphorous organic products, wetting or anti-corrosion products, fatty substances of organic origin such as tallow, etc.
According to the present invention there is provided a method of lubricating during cold rolling of aluminium or its alloys in the form of 5 sheets or strips, wherein the product is prelubricated before deformation by a whole mineral and/or synthetic oil, possibly with additives, and the rolling tools, and eventually the product at the rolling stand, are lubricated with water or an aqueous lubricant. 2.
The prelubrication of the product before it is cold processed may result either from a specific operation or from a previous operation, the product of which is not degreased. In the first case the operation is carried out, either discontinuously or continuously, on the cold (or not cold) processing line, using any known arrangement such as spraying ramps (with or without air), an electrostatic device, a wiper soaked with oil, etc. The uniformity and even thickness of the layer of lubricant deposited, and its adhesion to the product, may be improved by known systems of brushes, felts, squeeze rollers, etc.
Lubrication in the cold deformation operation is effected with whole oil (or a mixture of oils), an emulsion or solution of oil in water or even water alone.
Under these conditions rolled strips without any surface flaws can be obtained, from strips 1n the annealed state (0) or in the cold rolled state (H), with reduction rates ranging from 50 to 90% in one pass and rolling speeds ranging from 500 to 1,000 m/mn, for thicknesses generally ranging from 15 to 0.15 mm.
Although the description of the Invention relates to cold rolling of strips, the method applies equally to cold rolling of other products such as bars, tubes, sheets, profiles, etc., or to other methods of cold deformation such as drawing or wire drawing.
The following examples illustrate the result obtained with the method of the invention as compared with prior art, in rolling strips of aluminium alloys (see table 1).
Prelubrication was effected by depositing a mixture of mineral oil and synthetic oil (5055-50% by weight) at the rate of a few grammes/m , sprinkling onto the two surfaces of the strip and wiping with squeeze rollers. Rolling proper was effected on a quarto single-housing rolling mill, with lubrication by sprinkling with an aqueous emulsion containing 105 by weight of oil: ACRA 75 A manufactured by FARBEST (1) 2319 L 17 manufactured by SHELL (2) The tests show that this method substantially increases the productivity of the rolling mill and at the same time gives rolled products with a very 35 good surface state. 3.
TABLE 1 ——r Alloy Initial state Initial thick- ness (mm) Final thick- ness (mm) No. of passes Reduction rate % Prelubric- ation Rolling speed Surface state Re- marks 5182 Cold 0.75 0.33 1 56 without 300/350 Good a rolled without 600/800 Bad a with 600/800 Good b 5052 Annealed 0.63 0.25 2 36+37 without 200+300 Good a 1 60 without 150 Good a 1 60 without 500/700 Bad a 1 60 with 500/700 Good b 3003 Annealed f 1.20 0.30 0 - without rolling imposs- ible - a ! i 1 75 with 400/500 Good b (a) prior art - (b) according to invention. 4, 3 410
Claims (5)
1. A method of lubricating during cold rolling of aluminium or its alloys in the form of sheets or strips, wherein the product Is prelubricated before deformation by a whole mineral and/or synthetic oil, 5 possibly with additives, and the rolling tools, and eventually the product at the rolling stand, are lubricated with water or an aqueous lubricant.
2. The method of claim 1, wherein prelubrication results from lubrication at a previous stage in the manufacturing process.
3. The method of any of claims 1 or 2, wherein the rolling tools and 1° eventually the product are lubricated by an emulsion of oil into water and possibly with additives.
4. The method of any of claims 1 or 2, wherein the rolling tools and eventually the product are lubricated by a solution of oil into water, possibly with additives.
5. A method of lubricating substantially as described herein with reference to the Examples.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8117529A FR2512702B1 (en) | 1981-09-11 | 1981-09-11 | LUBRICATION METHOD FOR COLD WORKING OF ALUMINUM AND ITS ALLOYS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE822226L IE822226L (en) | 1983-03-11 |
| IE53410B1 true IE53410B1 (en) | 1988-11-09 |
Family
ID=9262209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE2226/82A IE53410B1 (en) | 1981-09-11 | 1982-09-10 | Lubricating method for use when cold working aluminium and alloys thereof |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0088095B1 (en) |
| JP (1) | JPS58501418A (en) |
| KR (1) | KR890002486B1 (en) |
| CA (1) | CA1201611A (en) |
| DE (1) | DE3276413D1 (en) |
| DK (1) | DK160464C (en) |
| FR (1) | FR2512702B1 (en) |
| GR (1) | GR78054B (en) |
| HU (1) | HUT35557A (en) |
| IE (1) | IE53410B1 (en) |
| IT (1) | IT1152524B (en) |
| WO (1) | WO1983000820A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0824951B2 (en) * | 1991-12-12 | 1996-03-13 | 日本軽金属株式会社 | Hot rolling method for aluminum slabs |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1072039A (en) * | 1953-01-09 | 1954-09-07 | Forges D Hennebont | Method for oiling a strip, for example a sheet metal strip during cold rolling, and device for carrying out this process |
| NL242598A (en) * | 1956-09-07 | |||
| DE1402760B2 (en) * | 1961-06-13 | 1971-03-11 | Metallgesellschaft AG, 6000 Frank fürt | COVER TO FACILITATE THE COLD FORMING OF METALLIC WORKPIECES |
| US3192752A (en) * | 1963-06-27 | 1965-07-06 | Aluminum Co Of America | Cold rolling aluminum and product |
-
1981
- 1981-09-11 FR FR8117529A patent/FR2512702B1/en not_active Expired
-
1982
- 1982-09-03 IT IT23113/82A patent/IT1152524B/en active
- 1982-09-03 GR GR69198A patent/GR78054B/el unknown
- 1982-09-09 EP EP82902678A patent/EP0088095B1/en not_active Expired
- 1982-09-09 HU HU823200A patent/HUT35557A/en unknown
- 1982-09-09 DE DE8282902678T patent/DE3276413D1/en not_active Expired
- 1982-09-09 JP JP57502668A patent/JPS58501418A/en active Pending
- 1982-09-09 WO PCT/FR1982/000145 patent/WO1983000820A1/en active IP Right Grant
- 1982-09-10 CA CA000411138A patent/CA1201611A/en not_active Expired
- 1982-09-10 IE IE2226/82A patent/IE53410B1/en not_active IP Right Cessation
- 1982-09-11 KR KR8204121A patent/KR890002486B1/en active
-
1983
- 1983-05-10 DK DK206983A patent/DK160464C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT8223113A0 (en) | 1982-09-03 |
| WO1983000820A1 (en) | 1983-03-17 |
| DE3276413D1 (en) | 1987-07-02 |
| IT1152524B (en) | 1987-01-07 |
| DK206983D0 (en) | 1983-05-10 |
| HUT35557A (en) | 1985-07-29 |
| DK206983A (en) | 1983-05-10 |
| KR890002486B1 (en) | 1989-07-10 |
| EP0088095B1 (en) | 1987-05-27 |
| CA1201611A (en) | 1986-03-11 |
| FR2512702A1 (en) | 1983-03-18 |
| DK160464B (en) | 1991-03-18 |
| IE822226L (en) | 1983-03-11 |
| EP0088095A1 (en) | 1983-09-14 |
| KR840001442A (en) | 1984-05-07 |
| GR78054B (en) | 1984-09-26 |
| FR2512702B1 (en) | 1986-05-09 |
| DK160464C (en) | 1991-08-26 |
| JPS58501418A (en) | 1983-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |