SU770573A1 - Method of rolling and tempering in double-stand mill - Google Patents

Method of rolling and tempering in double-stand mill Download PDF

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Publication number
SU770573A1
SU770573A1 SU792709713A SU2709713A SU770573A1 SU 770573 A1 SU770573 A1 SU 770573A1 SU 792709713 A SU792709713 A SU 792709713A SU 2709713 A SU2709713 A SU 2709713A SU 770573 A1 SU770573 A1 SU 770573A1
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SU
USSR - Soviet Union
Prior art keywords
stand
rolling
concentration
cooling
tempering
Prior art date
Application number
SU792709713A
Other languages
Russian (ru)
Inventor
Aleksandr D Razmakhnin
Konstantin A Ivanov
Yanaki D Vasilev
Vladimir A Sorokin
Vladimir G Shuvyakov
Original Assignee
Aleksandr D Razmakhnin
Konstantin A Ivanov
Yanaki D Vasilev
Vladimir A Sorokin
Vladimir G Shuvyakov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aleksandr D Razmakhnin, Konstantin A Ivanov, Yanaki D Vasilev, Vladimir A Sorokin, Vladimir G Shuvyakov filed Critical Aleksandr D Razmakhnin
Priority to SU792709713A priority Critical patent/SU770573A1/en
Application granted granted Critical
Publication of SU770573A1 publication Critical patent/SU770573A1/en

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Classifications

    • 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
    • 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
    • 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
    • B21B2001/228—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 skin pass rolling or temper rolling
    • 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
    • B21B45/0203—Cooling
    • B21B45/0206—Coolants
    • 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
    • B21B45/0242—Lubricants
    • 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
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Lubricants (AREA)

Description

Изобретение относится к области обработки металлов давлением.The invention relates to the field of metal forming.

Известен способ прокатки-дрессировки на двухклетевом стане, включающий деформацию металла с обжатием 5 в первой клети на 40-60%, во второй клети -до 5%, смазку и охлаждение валков [Ι] .There is a method of rolling-training on a two-stand mill, including the deformation of the metal with a reduction in 5 in the first stand by 40-60%, in the second stand-up to 5%, lubrication and cooling rolls [].

Недостатком известного способа является неустойчивость процесса в пер- Ю вой клети, так как при прокатке достаточно тонкого подката и высоких * относительных обжатиях требуется высокая жесткость клети и мощность двигателей . Для осуществимости процесса ,5 снижают обжатия в первой клети (до 30-40%) и повышают во второй (до 1524%) с тем, чтобы получить заданную толщину на выходе. Однако в этом случае не достигается эффекта дрессиров- 20 ки, а дополнительная дрессировка ведет к снижению производительности.The disadvantage of this method is the instability of the process in the first stand, since when rolling a sufficiently thin rolled stock and high * relative reductions, a high rigidity of the stand and engine power are required. For the feasibility of the process, 5 reduce the compression in the first stand (up to 30-40%) and increase the second (up to 1524%) in order to obtain a given thickness at the exit. However, in this case, the effect of training is not achieved, and additional training leads to a decrease in performance.

Целью изобретения является повышение эффективности процесса, снижение энергозатрат на деформацию и обес-25 печение высокого качества и чистоты поверхности прокатываемых полос.The aim of the invention is to increase the efficiency of the process, reduce energy consumption for deformation and ensure high quality and cleanliness of the surface of the rolled strips.

Поставленная цель достигается тем, что смазку и охлаждение по предлагаемому способу осуществляют только’ в 30This goal is achieved by the fact that lubrication and cooling of the proposed method is carried out only ’in 30

22

первой клети, где в качестве смазки используют эмульсию на основе высоковязких минеральных масел концентрацией до 1%, а в качестве охладителя— водный раствор поверхностно-активных веществ концентрацией до 0,001 моль/л причем перед второй клетью и после нее на полосу подают воющий раствор.the first stand, where an emulsion based on highly viscous mineral oils with a concentration of up to 1% is used as a lubricant, and an aqueous solution of surfactants with a concentration of up to 0.001 mol / l is used as a coolant, and a howling solution is applied to the strip before and after it.

Предлагаемый способ осуществляют следующим образом.The proposed method is as follows.

В процессе прокатки в первой клети в качестве технологической смазки используют эмульсии высоковязких минеральных масел концентрацией до 1%. Вязкость базовых масел должна быть не ниже 2000-3000 сСт при 20°С,Эмульсии высоковязких минеральных масел являются высокоэффективными и эконо-·мичными технологическими смазками кон центрацией 0,5-1%. С другой стороны, эмульсии концентрацией до 1% не зажиривают полосу излишками технологической смазки. Охлаждение валков в первой клети производят водным раствором поверхностно-активных веществ концент рацией до 0,001» моль/л, который подают со стороны выхода металла из валков, что обеспечивает высокую эффективность процесса охлаждения. Водные растворы поверхностно-активных ве3In the process of rolling in the first stand, emulsions of highly viscous mineral oils with a concentration of up to 1% are used as a technological lubricant. The viscosity of base oils should not be lower than 2000-3000 cSt at 20 ° С. Emulsions of highly viscous mineral oils are highly effective and economical process lubricants with a concentration of 0.5-1%. On the other hand, emulsions with a concentration of up to 1% do not fry the strip with excess technological lubricant. The rolls are cooled in the first stand with an aqueous solution of surfactants with a concentration of up to 0.001 mol / l, which is supplied from the exit side of the metal from the rolls, which ensures high efficiency of the cooling process. Aqueous solutions of surfactant be3

770573770573

4four

ществ до указанных пределов концентраций обладают охлаждающей способностью несколько большей, чем вода, за счет улучшения условий смачивания поверхности металла. Таким образом, ’за счет эффективного снижения контактного тре- » ния между полосой и валком и интенсив- Э ного режима охлаждения валков в первичной клети достигается возможность единичных обжатий до 50% и более.Substances up to the specified concentration limits have a cooling capacity somewhat higher than water, due to the improved wetting conditions of the metal surface. Thus, 'by effectively reducing the contact tre- "Nia between the strip and the roll, and the intensity E a cooling mode in the primary cage rolls is achieved the possibility of single reductions up to 50% or more.

10ten

Перед второй клетью и после нее на полосу подают моющий раствор, который обеспечивает высокую чистоту поверхности прокатываемых полос. Во второй клети режим обжатий устанавлй- 15 вают в соответствии с достигнутым обжатием в первой клети, исходя из условий эффективного процесса дрессировки, обеспечения высокой плоскостности полос, для чего в процессе дрес--д сировки валки во второй клети не ох- м лаждают, а смазкой служит остающийся на попосе слой моющего раствора. Во второй клети относительные обжатия не превышают 5%,Before the second cage and after it, a cleaning solution is supplied to the strip, which ensures high purity of the surface of the rolled strips. In the second mode the stand reductions ustanavly- vayut 15 in accordance with the compression achieved in the first stand, on the basis of conditions of effective training process, ensuring high flatness bands, for which in the process address of - d-focusing roll in the second stand is not OX m lazhdayut and the lubricant is the remaining layer of the cleaning solution. In the second stand, relative reductions do not exceed 5%,

Описанный способ прокатки-дрессировки являетсяболее эффективным и— экономичным с точки зрения энергозатрат на деформацию, позволяет достичь более высоких относительныхThe described method of rolling-dressing is more efficient and economical from the point of view of energy consumption for deformation, it allows to achieve higher relative

обжатий за проход (60% и более) и обеспечивает высокое качество и чистоту поверхности прокатываемых полос.reductions per pass (60% or more) and provides high quality and cleanliness of the surface of the rolled strips.

Claims (1)

Формула изобретенияClaim Способ прокатки-дрессировки на двухклетевом стане, включающий деформацию металла с обжатием в первой клети 40-60%, во второй клети - до 5%, смазку и охлаждение валко'в, о тличающийся тем, ц^о, с целью повышения эффективности процесса, снижения энергозатрат на деформацию и обеспечения высокого качества и чистоты поверхности прокатываемых полос, смазку и охлаждение осуществля ют только в первой клети, где в качестве смазки используют эмульсию на основе высоковязких минеральных масел концентрацией до 1%, а в качестве охладителя - водный раствор поверхностно-активных веществ концентрацией до 0,001 моль/л, причем перед второй клетью и после нее на полосу подают моющий раствор.The method of rolling-training on a two-stand mill, including metal deformation with compression in the first stand of 40-60%, in the second stand - up to 5%, lubrication and cooling of the rolls, in order to increase the efficiency of the process, reduce energy consumption for deformation and ensure high quality and surface cleanliness of the rolled strips, lubrication and cooling are performed only in the first stand, where an emulsion based on high-viscosity mineral oils with a concentration of up to 1% is used as a lubricant and erhnostno active agents concentration 0.001 mol / l, and before the second stand and after the strip is fed to the cleaning solution.
SU792709713A 1979-01-09 1979-01-09 Method of rolling and tempering in double-stand mill SU770573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792709713A SU770573A1 (en) 1979-01-09 1979-01-09 Method of rolling and tempering in double-stand mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792709713A SU770573A1 (en) 1979-01-09 1979-01-09 Method of rolling and tempering in double-stand mill

Publications (1)

Publication Number Publication Date
SU770573A1 true SU770573A1 (en) 1980-10-15

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SU792709713A SU770573A1 (en) 1979-01-09 1979-01-09 Method of rolling and tempering in double-stand mill

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