SU829239A1 - Multistand mill cold rolling method - Google Patents
Multistand mill cold rolling method Download PDFInfo
- Publication number
- SU829239A1 SU829239A1 SU792805207A SU2805207A SU829239A1 SU 829239 A1 SU829239 A1 SU 829239A1 SU 792805207 A SU792805207 A SU 792805207A SU 2805207 A SU2805207 A SU 2805207A SU 829239 A1 SU829239 A1 SU 829239A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- emulsion
- viscosity
- yield strength
- concentration
- rolling
- Prior art date
Links
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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
1one
Изобретение относитс к обработке металлов давлением и может быть использовано преимущественно на многоклетевых станах холодной прокатки.The invention relates to the processing of metals by pressure and can be used mainly in multi-stand cold rolling mills.
Известен способ холодной прокатки, включающий промасливание полосы перед прокаткой водной эмульсией, концентрацией 5-10%, состо щей из продуктов конденсации синтетических жирныхThere is a method of cold rolling, which includes oiling the strip before rolling with an aqueous emulsion, a concentration of 5-10%, consisting of condensation products of synthetic fatty
кислот фракцией Сдо и выие с триэтаноламином , а охл сдение ведут чистойacidic fractions of sdo and triethanolamine, and the cooler are kept clean
ВОДОЙ 1.WATER 1.
Основной недостаток способа заключаетс в том, что предварительное прО масливание подката осуществл етс однократным нанесением смазки перед прокаткой, что не обесйечивает нормальных условий трени во всех клет х многоклетевого стана, так как толщина сло смазки в каждой последующей клети непрерывно убывает. Это обусловлено тем, что смазка, во-первых, смываетс охлаждающей водой и, вовторых , распредел етс между валками и полосой. Кроме того, невозможно контролировать равномерность нанесеци и толщину смазочного сло при промасливании и последующей прокатке. Неравномерность смазочной пленки на поверхности полосы приводит к нарушению стабильности процесса на многоклетевых станах.The main disadvantage of the method is that the preliminary rolling of the rolled stock is carried out by applying lubricant once before rolling, which does not ensure normal friction conditions in all the cells of the multi-stand mill, since the thickness of the lubricant layer in each subsequent stand decreases continuously. This is because the lubricant is, firstly, washed away with cooling water and, secondly, distributed between the rollers and the strip. In addition, it is not possible to control the uniformity of the coating and the thickness of the lubricant layer during oiling and subsequent rolling. The unevenness of the lubricant film on the surface of the strip leads to a violation of the stability of the process on multicellular mills.
Наиболее близким к предлагаемому вл етс способ холодной прокатки на многоклетевых станах, заключающийс в том, что на полосу после выхода металла из клети подают эмульсию концентрацией 0,1-0,5%, а перед входом в очаг деформации концентрацию эмульсии повышают в 5-10 раз, а охладитель подают на валки со стороны выхода металла из клети, экраниру полосу от попадани воды 2..The closest to the proposed method is cold rolling on multicellied mills, namely, that an emulsion with a concentration of 0.1-0.5% is applied to the strip after the metal leaves the stand, and before entering the deformation zone, the concentration of the emulsion is increased by 5-10 once and the cooler is fed to the rolls from the exit of the metal from the cage, shielding the strip from the ingress of water 2 ..
Недостатком указанного способа холодной прокатки вл етс то, что в процессе прокатки используетс эмульси , в зкость базового масла в; которой посто нна. Поскольку в каждую последующую клеть входит металл более наклепанный, чем в предыдущей клети, то эффективность способа при прокатке.в последних клет х уменьшаетс . Эффективность смазки при прокатке вл етс .функцией толп ны сма зочного сло .,The disadvantage of this cold rolling method is that in the rolling process an emulsion is used, the viscosity of the base oil in; which is constant. Since the metal is more naklepan in each successive stand than in the previous stand, the efficiency of the rolling method decreases in the last stands. The rolling lubrication efficiency is a function of the lubrication layer crowd.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792805207A SU829239A1 (en) | 1979-08-06 | 1979-08-06 | Multistand mill cold rolling method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792805207A SU829239A1 (en) | 1979-08-06 | 1979-08-06 | Multistand mill cold rolling method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU829239A1 true SU829239A1 (en) | 1981-05-15 |
Family
ID=20844422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792805207A SU829239A1 (en) | 1979-08-06 | 1979-08-06 | Multistand mill cold rolling method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU829239A1 (en) |
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1979
- 1979-08-06 SU SU792805207A patent/SU829239A1/en active
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