WO2021012692A1 - Rouleau utilisé pour une feuille d'aluminium galvanisée et son procédé de préparation - Google Patents

Rouleau utilisé pour une feuille d'aluminium galvanisée et son procédé de préparation Download PDF

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Publication number
WO2021012692A1
WO2021012692A1 PCT/CN2020/080612 CN2020080612W WO2021012692A1 WO 2021012692 A1 WO2021012692 A1 WO 2021012692A1 CN 2020080612 W CN2020080612 W CN 2020080612W WO 2021012692 A1 WO2021012692 A1 WO 2021012692A1
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WO
WIPO (PCT)
Prior art keywords
roll
treatment
tempering
quenching
finished product
Prior art date
Application number
PCT/CN2020/080612
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English (en)
Chinese (zh)
Inventor
蔡友根
Original Assignee
江苏润孚机械轧辊制造有限公司
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Publication of WO2021012692A1 publication Critical patent/WO2021012692A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Definitions

  • the invention relates to a roll for galvanized aluminum plate and a preparation method thereof.
  • Rolls require wear resistance, and hardness has become a daily control indicator.
  • hardness and wear resistance are not unconditionally unified, so when choosing a roll, in addition to hardness, it also depends on its composition, production method, structure, other properties and residual stress. Therefore, when choosing the hardness of the roll, it depends on the rolling mill conditions, rolling conditions, types of rolled products and operating experience.
  • galvanized sheets and aluminized sheets as well as galvanized sheets.
  • the demand for aluminum-zinc sheets is increasing, and the current production volume cannot meet the overall demand. The reason is that the large-area peeling phenomenon of the work rolls for rolling aluminum-zinc sheets is serious, which cannot fully meet the production requirements, resulting in a decrease in output.
  • Aluminum-zinc is corrosive to ordinary rolls. Rolls attached with zinc, aluminum or zinc-aluminum alloys will produce hydrogen due to chemical reactions caused by zinc or aluminum in contact with water, and hydrogen will penetrate into the rolls. After aggregation occurs, hydrogen molecules are formed, and the volume expansion causes hydrogen embrittlement, which is like peeling off the surface of the roll. 2.
  • Hardness selection usually the hardness of the roll is required to be 95-98HSD, so the work roll must increase the cryogenic treatment to reduce the existence of retained austenite, enhance the hardness of the roll, and avoid the spalling problem caused by the retained austenite;
  • the higher the yield strength the greater the susceptibility to hydrogen embrittlement, and the inclusion of sulfides and untempered martensite structures are prone to hydrogen embrittlement.
  • the prior art has proposed not to use cryogenic treatment for the roll to address this hydrogen embrittlement problem, and increase the existence of retained austenite to resist hydrogen diffusion and reduce roll body spalling. Because in the manufacture of rolls, after a period of heating or holding time, ferrite will transform into austenite at 912°C to 1394°C, austenite grains will grow, and the grain boundaries may tend to be flattened. The dense structure prevents the penetration of hydrogen.
  • the main purpose of the present invention is to overcome the deficiencies of the prior art, and discloses a roll for galvanized aluminum plate.
  • the composition and weight percentage of the roll are: C: 0.80% -1.2%, Si: 0.9%-1.5%, Ni: 1.41%-1.52%, Mn: 0.75%-0.9%, Cr: 5.95%-6.25%, Cu: 0.05%-0.1%, Mo: 0.31%-0.62 %, Sb: 0.005%-0.01%, Bi: 0.001%-0.002%, Pb: 0.001%-0.002%, Sn: 0.01%-0.015%, As: 0.003%-0.01%, P ⁇ 0.02%, S ⁇ 0.003 %, the remainder Fe, the sum of the components is 100%; the retained austenite content of the roll is 8%-15%, and the hardness is 93-95HSD.
  • composition of the roller and its weight percentage are: C: 1.00%, Si: 1.2%, Ni: 1.48%, Mn: 0.88%, Cr: 6%, Cu: 0.07%, Mo: 0.45%, Sb: 0.007%, Bi: 0.001%, Pb: 0.001%, Sn: 0.013%, As: 0.007%, P: 0.015%, S: 0.002%, the balance Fe, and the sum of the components is 100%.
  • step 2) Low-temperature casting, using low-pressure pouring method to pour the alloy liquid in step 1) into the roll mold. After the alloy liquid is solidified and formed, the pressure is relieved and the mold is released to obtain roll castings;
  • step 3 Heat treatment: rough turning the roll castings obtained in step 2) to obtain semi-finished products, then undergo quenching and tempering treatment, quenching treatment, cold treatment, tempering treatment, and finally fine grinding to obtain the finished product;
  • the cold treatment temperature is -30 to 5°C
  • the weight percentage of retained austenite of the galvanized aluminum roll is 8%-15%, and the hardness is 93-95HSD.
  • the quenching temperature of the quenching treatment is 905-960°C.
  • the tempering temperature of the tempering treatment is 150-180°C, and the holding time is 80 hours.
  • the tempering treatment is a three-stage tempering heat treatment
  • the first stage put the semi-finished product into the tempering furnace, heat it up to 150-160°C at a rate of 50-60°C/h, and keep it for 20 hours;
  • the present invention provides a roll for galvanized aluminum, the weight percentage of each component is: C: 0.80%-1.2%, Si: 0.9%-1.5%, Ni: 1.41%-1.52%, Mn: 0.75%- 0.9%, Cr: 5.95%-6.25%, Cu: 0.05%-0.1%, Mo: 0.31%-0.62%, Sb: 0.005%-0.01%, Bi: 0.001%-0.002%, Pb: 0.001%-0.002% , Sn: 0.01%-0.015%, As: 0.003%-0.01%, P ⁇ 0.02%, S ⁇ 0.003%, the balance Fe, the sum of the components is 100%.
  • the retained austenite content of the roll is 8%-15%, and the hardness is 93-95HSD.
  • the raw materials are smelted in an intermediate frequency induction electric furnace, and fully stirred to obtain an alloy solution
  • step 2) Low-temperature casting, using low-pressure pouring method to pour the alloy liquid in step 1) into the roll mold. After the alloy liquid is solidified and formed, the pressure is relieved and the mold is released to obtain roll castings;
  • the semi-finished product is heated to 900°C, then quenched by oil cooling, and then tempered at 600°C. Due to the fast induction heating speed, the austenite transformation temperature increases, and the carbon concentration difference in the austenite increases.
  • the preliminary heat treatment before quenching can obtain a fine and uniform structure, make the roll core and roll neck achieve good mechanical properties, increase the yield ratio of the roll, and effectively increase the fatigue life of the roll; at the same time, it can be used for the later surface quenching of the roll.
  • Organization preparation, after quenching and tempering some carbides of the roll are dispersed and precipitated. These carbides are easier to dissolve in the final surface quenching; and can improve the matrix structure, especially the distribution of carbides.
  • Semi-finishing and ultrasonic flaw detection after quenching and tempering According to the requirements of the processing drawings, semi-finishing is performed on the lathe, using ultrasonic energy to penetrate into the depth of the metal material, and when one section enters another section, it occurs at the edge of the interface Reflective features to check for part defects. Then it is quenched.
  • the semi-finished product is heated to 905°C by means of power frequency induction coil induction heating; specifically, when passing through the energized induction coil, electromagnetic induction forms an induced current on the surface of the roll, which makes the surface
  • adjust the power to adjust the heating temperature through temperature measurement feedback, so that the surface of the roll can obtain a certain depth of hardened layer and good hardness uniformity.
  • Tempering treatment tempering treatment is divided into three-stage tempering heat treatment
  • the first stage put the semi-finished product into the tempering furnace, heat it up to 150-160°C at a rate of 50-60°C/h, and keep it for 20 hours;
  • the weight percentage of retained austenite of the zinc-aluminum-coated roll obtained in this embodiment is 8%, and the hardness is 95HSD.
  • the cold treatment temperature is -30-5°C
  • the weight percentage of retained austenite of the galvanized aluminum roll is 8%-15%
  • the hardness is 93-95HSD.
  • the raw materials are smelted in an intermediate frequency induction electric furnace, and fully stirred to obtain an alloy solution
  • step 2) Low-temperature casting, using low-pressure pouring method to pour the alloy liquid in step 1) into the roll mold. After the alloy liquid is solidified and formed, the pressure is relieved and the mold is released to obtain roll castings;
  • the semi-finished product is heated to 900°C, then quenched by oil cooling, and then tempered at 600°C. Due to the fast induction heating speed, the austenite transformation temperature increases and the carbon concentration difference in the austenite increases.
  • the preliminary heat treatment before quenching can obtain a fine and uniform structure, make the roll core and roll neck achieve good mechanical properties, increase the yield ratio of the roll, and effectively increase the fatigue life of the roll; at the same time, it can be used for the later surface quenching of the roll.
  • Organization preparation, after quenching and tempering some carbides of the roll are dispersed and precipitated. These carbides are easier to dissolve in the final surface quenching; and can improve the matrix structure, especially the distribution of carbides.
  • Semi-finishing and ultrasonic flaw detection after quenching and tempering According to the requirements of the processing drawings, semi-finishing is performed on the lathe, using ultrasonic energy to penetrate into the depth of the metal material, and when one section enters another section, it occurs at the edge of the interface Reflective features to check for part defects. Then it is quenched.
  • the semi-finished product is heated to 905°C by means of power frequency induction coil induction heating; specifically, when passing through the energized induction coil, electromagnetic induction forms an induced current on the surface of the roll, which makes the surface
  • adjust the power to adjust the heating temperature through temperature measurement feedback, so that the surface of the roll can obtain a certain depth of hardened layer and good hardness uniformity.
  • Tempering treatment tempering treatment is divided into three-stage tempering heat treatment
  • the first stage put the semi-finished product into the tempering furnace, heat it up to 150-160°C at a rate of 50-60°C/h, and keep it for 20 hours;
  • the weight percentage of retained austenite of the galvanized aluminum roll obtained in this embodiment is 13%, and the hardness is 94HSD.
  • the raw materials are smelted in an intermediate frequency induction electric furnace, and fully stirred to obtain an alloy solution
  • step 2) Low-temperature casting, using low-pressure pouring method to pour the alloy liquid in step 1) into the roll mold. After the alloy liquid is solidified and formed, the pressure is relieved and the mold is released to obtain roll castings;
  • the semi-finished product is heated to 900°C, then quenched by oil cooling, and then tempered at 600°C. Due to the fast induction heating speed, the austenite transformation temperature increases, and the carbon concentration difference in the austenite increases.
  • the preliminary heat treatment before quenching can obtain a fine and uniform structure, make the roll core and roll neck achieve good mechanical properties, increase the yield ratio of the roll, and effectively increase the fatigue life of the roll; at the same time, it can be used for the later surface quenching of the roll.
  • Organization preparation, after quenching and tempering some carbides of the roll are dispersed and precipitated. These carbides are easier to dissolve in the final surface quenching; and can improve the matrix structure, especially the distribution of carbides.
  • Semi-finishing and ultrasonic flaw detection after quenching and tempering According to the requirements of the processing drawings, semi-finishing is performed on the lathe, using ultrasonic energy to penetrate into the depth of the metal material, and when one section enters another section, it occurs at the edge of the interface Reflective features to check for part defects. Then it is quenched.
  • the semi-finished product is heated to 905°C by means of power frequency induction coil induction heating; specifically, when passing through the energized induction coil, electromagnetic induction forms an induced current on the surface of the roll, which makes the surface
  • adjust the power to adjust the heating temperature through temperature measurement feedback, so that the surface of the roll can obtain a certain depth of hardened layer and good hardness uniformity.
  • Tempering treatment tempering treatment is divided into three-stage tempering heat treatment
  • the first stage put the semi-finished product into the tempering furnace, heat it up to 150-160°C at a rate of 50-60°C/h, and keep it for 20 hours;
  • the weight percentage of retained austenite of the galvanized aluminum roll obtained in this embodiment is 15%, and the hardness is 93HSD.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

La présente invention concerne un rouleau utilisé pour une feuille d'aluminium galvanisée et un procédé de préparation associé. Selon la présente invention, la teneur en austénite résiduelle est régulée de 8 % à 15 %, et la rigidité est de 93 à 95 HSD. Les matières premières sont placées dans un four à induction moyenne fréquence pour préparer un liquide d'alliage, et un produit semi-fini est coulé à basse température ; un produit fini est obtenu après un traitement thermique, un affinage thermique, un traitement de trempe, un traitement à froid, un traitement de revenu et un broyage fin final, la température de traitement à froid étant de -30 à 5 degrés centigrades. La zone de phase austénite est agrandie tandis que des éléments tels que Ni et Mn sont ajoutés, ce qui permet de trouver un point critique d'austénite résiduelle satisfaisant la technique de fabrication. C'est-à-dire que la régulation de rigidité ne satisfait pas seulement la force de laminage, mais empêche également la situation dans laquelle le rouleau ne peut pas être utilisé à un diamètre minimal en raison d'une faible rigidité de roulement. Par ailleurs, la combinaison de différents composants d'alliage et de différentes technologies améliore non seulement la résistance à la corrosion du rouleau d'aluminium galvanisé mais permet également à l'austénite d'être stabilisée dans différentes températures de travail, ce qui permet de prolonger la durée de vie du rouleau tout en améliorant la qualité de la surface.
PCT/CN2020/080612 2019-07-22 2020-03-23 Rouleau utilisé pour une feuille d'aluminium galvanisée et son procédé de préparation WO2021012692A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910661557.2A CN110527903B (zh) 2019-07-22 2019-07-22 一种用于镀锌铝板的轧辊及其制备方法
CN201910661557.2 2019-07-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110527903B (zh) * 2019-07-22 2021-03-19 江苏润孚机械轧辊制造有限公司 一种用于镀锌铝板的轧辊及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1070433A (zh) * 1991-09-12 1993-03-31 川崎制铁株式会社 轧辊外层材料和离心铸造的复合轧辊
CN101186993A (zh) * 2007-12-18 2008-05-28 宝钢集团常州轧辊制造公司 耐氢脆轧辊及其制造方法
CN103100829A (zh) * 2013-02-22 2013-05-15 常州艾柯轧辊有限公司 超高硬度宽幅双零铝箔冷轧辊的制备方法
JP2015203138A (ja) * 2014-04-14 2015-11-16 虹技株式会社 鋳鉄鋳物とその製造方法
EP3428300A1 (fr) * 2017-07-10 2019-01-16 Saar-Pulvermetall GmbH Rouleau pour un dispositif moulin et / ou presse, en particulier un rouleau de pressage pour une presse de fabrication de pellets et procédé de fabrication de rouleau
CN110527903A (zh) * 2019-07-22 2019-12-03 江苏润孚机械轧辊制造有限公司 一种用于镀锌铝板的轧辊及其制备方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2532755C1 (ru) * 2013-08-22 2014-11-10 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Двухслойный стальной листовой прокат и изделие, выполненное из него

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1070433A (zh) * 1991-09-12 1993-03-31 川崎制铁株式会社 轧辊外层材料和离心铸造的复合轧辊
CN101186993A (zh) * 2007-12-18 2008-05-28 宝钢集团常州轧辊制造公司 耐氢脆轧辊及其制造方法
CN103100829A (zh) * 2013-02-22 2013-05-15 常州艾柯轧辊有限公司 超高硬度宽幅双零铝箔冷轧辊的制备方法
JP2015203138A (ja) * 2014-04-14 2015-11-16 虹技株式会社 鋳鉄鋳物とその製造方法
EP3428300A1 (fr) * 2017-07-10 2019-01-16 Saar-Pulvermetall GmbH Rouleau pour un dispositif moulin et / ou presse, en particulier un rouleau de pressage pour une presse de fabrication de pellets et procédé de fabrication de rouleau
CN110527903A (zh) * 2019-07-22 2019-12-03 江苏润孚机械轧辊制造有限公司 一种用于镀锌铝板的轧辊及其制备方法

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