US3810786A - Method for cleaning (degreasing) web material - Google Patents

Method for cleaning (degreasing) web material Download PDF

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Publication number
US3810786A
US3810786A US00134742A US13474271A US3810786A US 3810786 A US3810786 A US 3810786A US 00134742 A US00134742 A US 00134742A US 13474271 A US13474271 A US 13474271A US 3810786 A US3810786 A US 3810786A
Authority
US
United States
Prior art keywords
detergent
oil
solution
degreasing
web
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
Application number
US00134742A
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English (en)
Inventor
B Lindgren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nyby Bruk AB
Original Assignee
Nyby Bruk AB
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
Priority to SE05128/70A priority Critical patent/SE338221B/xx
Priority to FR7113342A priority patent/FR2097751A5/fr
Priority to DE19712118347 priority patent/DE2118347A1/de
Application filed by Nyby Bruk AB filed Critical Nyby Bruk AB
Priority to US00134742A priority patent/US3810786A/en
Priority to GB2733871*A priority patent/GB1332557A/en
Priority to AT328771A priority patent/AT312389B/de
Application granted granted Critical
Publication of US3810786A publication Critical patent/US3810786A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
    • 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
    • B21B45/0284—Cleaning devices removing liquids removing lubricants
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
    • 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

Definitions

  • the conventional method which at present is the only possible one, comprises in principle the steps of removing the oil in a chemical and mechanical way by washing the surfaces in a liquid, usually water, which advantageously is heated and to which grease or oil solving chemicals are added.
  • a liquid usually water
  • the chemical attack is combined with a mechanical effect which, for example, most easily can be achieved by brushing.
  • the solvent is brought into a more intimate contact with the impurities. This operation usually is followed by flush cleaning and drying.
  • the conventional method has several disadvantages, of which by way of example the following ones may be mentioned:
  • washing solution For reducing the number of washing solution changes, very large quantities of washing solution are to be applied in order thereby to be able to clean large amounts of web material until that concentration of oil and impurities is obtained at which the effectiveness of the detergent decreases. Said large quantities require voluminous, bulky means-i.e. vessels-with high space requirements, particularly in their longitudinal extension, and also large and power demanding auxiliary equipment, for example for brushing, pumping etc. A further consequence is the problem connected with taking care of heavily polluted washing solutions at their discharge.
  • the detergents used in relatively large quantities include large amounts of alkali, phosphates, silicates, hydrates and carbonates. These detergents are chemically labile, i.e., they disintegrate and thereby lose their solvating effect and constitute a heavy load for the efliciency degree of installation. This applies particularly to the polyphosphates, which have a very high thermolability. This implies that these polyphosphates disintegrate to orthophosphates and lose their solvating effect. Their emulsifying effect, however, results in emulsions of oil and water of high stability.
  • Trichloroethylene is an expensive product, and its consumption is high.
  • the method and the apparatus according to the invention have as their object to eliminate the aforesaid disadvantages of the known conventional methods.
  • the invention in principle is characterized by a displacement of the oil in a chemical-physical way, which displacement is effected by the use of detergents with a hydrophylic-lypophylic-balance (HLB) of 10 and above, which results in the formation of a labile emulsion, which by constructional means according to the invention very rapidly disintegrates to oil and water.
  • HLB hydrophylic-lypophylic-balance
  • the method operates in principle with the characterizing features as follows.
  • the specially selected detergent can form with water and oil an emulsion only when energy is supplied and the energy level is maintained. As soon as the energy supply ceases, the emulsion reassumes its labile nature, the oil coalescence proceeds rapidly and totally, so that the oil is separated from the water and can be returned to a normal use, for example as fuel oil. Subsequent to the coalescence the detergent is regenerated automatically, and the washing solution free of oil can again be supplied into the process.
  • the apparatus for carrying out the method according to the invention is characterized by means for the supply of energy and an arrangement-the so-called rest roomwhere the quasi-stable emulsion due to the absence of energy reassumes its labile nature, so that the separation of the oil from the washing solution can take place.
  • the web passes through a pair of doctor rolls 1, which under pressure remove rolling oil, for example, to such a degree, that the web only shows a coherent oil film without puddles and runnels.
  • the doctor rolls are made, for example, of metal and coated with felt or plastic, but advantageously with rubber.
  • a collecting vessel (not shown) with flutes for the oil.
  • the web thereafter enters the degreasing zone 2 and passes in turn by a spray ramp 3 spraying a detergent solution onto both surfaces of the web, an energy supply means, which in the example shown is in the form of circular rotary brushes 4 vigorously agitating the washing solution on both surfaces of the web, and a spray ramp 5 for flushing both web surfaces with a clean detergent solution.
  • the detergent solution includes water plus an addition of 0.05% by weight of a detergent with an HLB value at or above 10, for example nonyl-phenolethylene oxide adduct (which is a wetting agent with a relatively high HLB value and with a hydrophilic nature).
  • detergent there is used one (such as the mentioned nonyl-phenol-ethylene oxide adduct) having a non-ionic character, taken alone or in combination with an anionic and/or a cationic detergent.
  • the amount of the selected detergent used in the aqueous solution is from 0.001% to 1.0% by weight; advantageously however, from 0.001% to 0.1% by weight and particularly to 0.05% by weight.
  • the HLB value states the hydrophilic-lypophilic-balance in the chemical composition of a detergent and, thus, is a classification value for detergents with respect to the solubility in oil or water.
  • the value is a limit value at which the detergents change their nature, i.e. change over from oil solubility to water solubility.
  • This detergent solution advantageously may have a temperature of about 60 C., at which the solution speed is greatest, particularly when waxes or similar substances have been applied to the sheet metal surface at working (for example at polishing).
  • the web passes after the degreasing zone again through a pair of doctor rolls 6, which under a relatively high pressure remove the film of detergent solution. Thereafter the web is ready for further working or reeling.
  • the film of detergent solution remaining after the passage of the web through the doctor rolls it may be mentioned that this film has no damaging effect at the further working, particularly at annealing.
  • the detergent solution is supplied from a sedimentation-storage tank 7 by pump 8 to the aforementioned spray system in the brushing and flushing zones. In both of said zones, a relatively high energy amount is supplied to the solution and thereby imparts to the solution a temporary emulsion stability (quasistability), which contributes to lifting the oil remaining on the web therefrom and emulsifying it.
  • the emulsion is pumped, by pump 8, from a collecting vessel 9 in direct connection with the degreasing zone to the aforesaid sedimentationstorage tank, the so-called rest room. Heat is supplied to the rest room and through the degreasing operation, at between 30 C. and 80 0, preferably between 50 C. and 70 C., and suitably at about 60 C.
  • coalescence filter is applied, either in combination with said rest room or without the same.
  • the detergent amounts to be added for bringing about the results characterizing the invention are almost negligible (0.05 by weight) relative to the solution volume,
  • the detergent is regenerated after the oil separation and, thus, is not lost, except for a certain very small waste.
  • the volume of the washing solution is only a fraction of the volume required for conventional cleaning and need not be changed.
  • a method of environment protective degreasing of stainless steel web material which comprises the steps of,
  • a method according to claim 1 characterized in that the flushing is carried out with a clean washing solution by spraying.
  • the detergent used is a composition including both a nonionic compound and a detergent selected from the group consisting of anionic and cationic compounds.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US00134742A 1970-04-15 1971-04-16 Method for cleaning (degreasing) web material Expired - Lifetime US3810786A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE05128/70A SE338221B (ja) 1970-04-15 1970-04-15
FR7113342A FR2097751A5 (ja) 1970-04-15 1971-04-15
DE19712118347 DE2118347A1 (de) 1970-04-15 1971-04-15 Verfahren und Vorrichtung zur Reinigung und Entfettung von bandförmigem Material
US00134742A US3810786A (en) 1970-04-15 1971-04-16 Method for cleaning (degreasing) web material
GB2733871*A GB1332557A (en) 1970-04-15 1971-04-19 Cleaning or degreasing of web material
AT328771A AT312389B (de) 1970-04-15 1971-04-19 Verfahren und Anordnung zur Reinigung (Entfettung) von bandförmigem Material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE05128/70A SE338221B (ja) 1970-04-15 1970-04-15
US00134742A US3810786A (en) 1970-04-15 1971-04-16 Method for cleaning (degreasing) web material

Publications (1)

Publication Number Publication Date
US3810786A true US3810786A (en) 1974-05-14

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ID=26654601

Family Applications (1)

Application Number Title Priority Date Filing Date
US00134742A Expired - Lifetime US3810786A (en) 1970-04-15 1971-04-16 Method for cleaning (degreasing) web material

Country Status (6)

Country Link
US (1) US3810786A (ja)
AT (1) AT312389B (ja)
DE (1) DE2118347A1 (ja)
FR (1) FR2097751A5 (ja)
GB (1) GB1332557A (ja)
SE (1) SE338221B (ja)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256601A (en) * 1977-12-23 1981-03-17 Nippon Paint Co., Ltd. Degreasing composition for treating metal surface
US4651762A (en) * 1985-07-01 1987-03-24 Bowden Industries, Inc. Agitation parts degreaser
WO1991011543A1 (de) * 1990-01-29 1991-08-08 Preussag Aktiengesellschaft Verfahren zur entölung von kleinteiligem feststoffgut, insbesondere metallhaltigen produktionsrückständen und verunreinigten böden
WO1993013648A1 (en) * 1992-01-21 1993-07-22 Strathayr Instant Lawn Pty. Limited Sod handling
EP0567015A1 (en) * 1992-04-20 1993-10-27 Mitsubishi Chemical Corporation Method of and apparatus for cleaning oil-deposited material and a cleaning agent used therefor
US5454190A (en) * 1993-12-30 1995-10-03 American Roller Bushing Corporation Cleansed grass sod and method for its production
WO2006092670A1 (en) * 2005-03-01 2006-09-08 Bogballe A/S Method of degreasing metal sheets
US20100255630A1 (en) * 2008-01-18 2010-10-07 Miasole Sodium-incorporation in solar cell substrates and contacts
US20100258982A1 (en) * 2008-01-18 2010-10-14 Miasole Laser polishing of a solar cell substrate
US20100282276A1 (en) * 2009-04-13 2010-11-11 Miasole Removing defects from photovoltaic cell metallic substrates with fixed-abrasive filament roller brushes
CN102671972A (zh) * 2012-05-04 2012-09-19 中冶南方工程技术有限公司 未脱脂带钢清洁平整工艺
CN102699049A (zh) * 2012-05-04 2012-10-03 中冶南方工程技术有限公司 未脱脂带钢清洁平整装置
US8546172B2 (en) 2008-01-18 2013-10-01 Miasole Laser polishing of a back contact of a solar cell
CN110026375A (zh) * 2019-05-24 2019-07-19 吉林大学 一种机床零部件油污擦除装置
CN112871770A (zh) * 2020-12-24 2021-06-01 南京同宁新材料研究院有限公司 一种金属板材辊式除油装置
CN117604539A (zh) * 2024-01-23 2024-02-27 山东大业股份有限公司 一种胎圈钢丝热处理脱脂装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488532A1 (fr) * 1980-08-18 1982-02-19 Indre Forges Basse Procede de laminage ecrouissant a taux regle pour bandes d'acier doux recuites sous cloche
DE3325198C2 (de) * 1983-07-13 1998-10-29 Schloemann Siemag Ag Verfahren und Anordnung zum Reinigen von kaltgewalzten Metallbändern
CN103742773B (zh) * 2014-01-07 2016-01-06 东莞劲胜精密组件股份有限公司 一种用于电子设备生产的供油装置

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256601A (en) * 1977-12-23 1981-03-17 Nippon Paint Co., Ltd. Degreasing composition for treating metal surface
US4651762A (en) * 1985-07-01 1987-03-24 Bowden Industries, Inc. Agitation parts degreaser
WO1991011543A1 (de) * 1990-01-29 1991-08-08 Preussag Aktiengesellschaft Verfahren zur entölung von kleinteiligem feststoffgut, insbesondere metallhaltigen produktionsrückständen und verunreinigten böden
US5590488A (en) * 1992-01-21 1997-01-07 Strathayr Pty. Limited Sod handling
WO1993013648A1 (en) * 1992-01-21 1993-07-22 Strathayr Instant Lawn Pty. Limited Sod handling
EP0567015A1 (en) * 1992-04-20 1993-10-27 Mitsubishi Chemical Corporation Method of and apparatus for cleaning oil-deposited material and a cleaning agent used therefor
US5454190A (en) * 1993-12-30 1995-10-03 American Roller Bushing Corporation Cleansed grass sod and method for its production
US5743043A (en) * 1993-12-30 1998-04-28 American Roller Bushing Corporation Cleaned grass sod apparatus
WO2006092670A1 (en) * 2005-03-01 2006-09-08 Bogballe A/S Method of degreasing metal sheets
US8546172B2 (en) 2008-01-18 2013-10-01 Miasole Laser polishing of a back contact of a solar cell
US20100255630A1 (en) * 2008-01-18 2010-10-07 Miasole Sodium-incorporation in solar cell substrates and contacts
US20100258982A1 (en) * 2008-01-18 2010-10-14 Miasole Laser polishing of a solar cell substrate
US8586398B2 (en) 2008-01-18 2013-11-19 Miasole Sodium-incorporation in solar cell substrates and contacts
US8536054B2 (en) 2008-01-18 2013-09-17 Miasole Laser polishing of a solar cell substrate
US20100282276A1 (en) * 2009-04-13 2010-11-11 Miasole Removing defects from photovoltaic cell metallic substrates with fixed-abrasive filament roller brushes
CN102671972A (zh) * 2012-05-04 2012-09-19 中冶南方工程技术有限公司 未脱脂带钢清洁平整工艺
CN102699049A (zh) * 2012-05-04 2012-10-03 中冶南方工程技术有限公司 未脱脂带钢清洁平整装置
CN102671972B (zh) * 2012-05-04 2014-11-05 中冶南方工程技术有限公司 未脱脂带钢清洁平整工艺
CN102699049B (zh) * 2012-05-04 2014-11-26 中冶南方工程技术有限公司 未脱脂带钢清洁平整装置
CN110026375A (zh) * 2019-05-24 2019-07-19 吉林大学 一种机床零部件油污擦除装置
CN110026375B (zh) * 2019-05-24 2021-09-14 吉林大学 一种机床零部件油污擦除装置
CN112871770A (zh) * 2020-12-24 2021-06-01 南京同宁新材料研究院有限公司 一种金属板材辊式除油装置
CN117604539A (zh) * 2024-01-23 2024-02-27 山东大业股份有限公司 一种胎圈钢丝热处理脱脂装置
CN117604539B (zh) * 2024-01-23 2024-04-09 山东大业股份有限公司 一种胎圈钢丝热处理脱脂装置

Also Published As

Publication number Publication date
GB1332557A (en) 1973-10-03
FR2097751A5 (ja) 1972-03-03
SE338221B (ja) 1971-08-30
AT312389B (de) 1973-12-27
DE2118347A1 (de) 1971-12-23

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