WO2021012692A1 - 一种用于镀锌铝板的轧辊及其制备方法 - Google Patents

一种用于镀锌铝板的轧辊及其制备方法 Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
roll
treatment
tempering
quenching
finished product
Prior art date
Application number
PCT/CN2020/080612
Other languages
English (en)
French (fr)
Inventor
蔡友根
Original Assignee
江苏润孚机械轧辊制造有限公司
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 江苏润孚机械轧辊制造有限公司 filed Critical 江苏润孚机械轧辊制造有限公司
Publication of WO2021012692A1 publication Critical patent/WO2021012692A1/zh

Links

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.

Landscapes

  • 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

本发明公开了一种用于镀锌铝板的轧棍及其制备方法。本发明将残余奥氏体含量调整为8％-15％，硬度为93-95HSD。将原料置于中频感应电炉内制成合金液体，低温铸造成半成品；经过热处理，随后进行调质处理、淬火处理、冷处理、回火处理，最后进行精磨得到成品，冷处理温度为-30至5摄氏度。在扩大奥氏体相区的同时，添加了Ni、Mn等元素，找到了满足生产工艺的残余奥氏体的临界点，即硬度的调整既能满足轧制力，又不允许轧辊在逐步使用到最小直径时，因轧制硬度低而无法使用。同时，利用不同合金成分和工艺的组合，在增加该镀锌铝轧辊的耐腐蚀力的同时，又可使奥氏体稳定在不同的工作温度中，在提高了轧辊的表面质量的前提下增加了使用寿命。

Description

一种用于镀锌铝板的轧辊及其制备方法 技术领域
本发明涉及一种用于镀锌铝板的轧辊及其制备方法。
背景技术
轧辊都要求耐磨，硬度便成了日常控制指标。但硬度和耐磨性并非无条件统一的，所以在选择轧辊时，除硬度外，还要看其成分、生产方法、组织结构、其他性能和残余应力。所以在选择轧辊硬度时，还要看轧机条件、轧制条件、轧件品种和操作经验,，随着社会的发展，汽车行业用板、房产装饰和建筑行业对镀锌板和镀铝板以及镀铝锌板的需求越来越大，当前生产的量无法满足总体需求，原因就是轧制镀铝锌板的工作辊出现大面积剥落现象严重，不能充分满足生产要求，导致产量减少。
我们分析剥落原因：1、铝锌对普通轧辊具有一定侵蚀性，附着了锌、铝或锌铝合金的轧辊，由于锌或者铝遇到水会导致化学反应而生产氢，氢会渗入轧辊内部，发生聚集后形成氢分子，体积膨胀导致氢脆现象，似的轧辊表面剥落。2、硬度的选定，通常轧辊的硬度要求在95-98HSD，所以工作辊必须通过增加深冷处理减少残余奥氏体的存在，增强轧辊的硬度，避免因残余奥氏体而导致的剥落问题；但是，屈服强度愈高，氢脆敏感性愈大，硫化物的夹杂和未回火的马氏体组织极易发生氢脆。
目前，已有技术针对这个氢脆问题，提出对轧辊不采用深冷处理，增加残余奥氏体的存在来抵抗氢的扩散，减少辊身剥落。因为在制造轧辊时，经过一段时间加热或保温，铁素体在912℃至1394℃时会相变成奥氏体，奥氏体晶粒将长大，晶粒边界可趋向平直化，该致密性的结构阻止了氢的渗入。
但是，上述方法虽然减轻了氢脆问题，但通过试验表明，附着了锌、铝或锌铝合金的轧辊，在潮湿环境的腐蚀性还是影响轧辊寿命的主要因素，并没有明显改善轧辊的使用寿命，频繁对轧辊进行磨削修复，使得轧辊尺寸快速小于规定值，报废时间缩短，甚至，随着使用中的温度变化，残余奥氏体并不稳定，局部氢脆问题还是会随机发生。
发明内容
针对以上现有技术存在的缺陷，本发明的主要目的在于克服现有技术的不足之处，公开了一种用于镀锌铝板的轧辊，该轧辊的成分及其重量百分比为：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％，余量Fe，成分的总和为100％；所述轧辊残留奥氏体含量为8％-15％，硬度为：93-95HSD。
进一步地，该轧辊的成分及其重量百分比为：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％，余量Fe，成分的总和为100％。
进一步地，包括：
1)熔炼铸造合金钢，将原料置于中频感应电炉内，充分搅拌，制成合金液体；原料按照重量百分比的组分组成为：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％，余量Fe，成分的总和为100％；
2)低温铸造，采用低压浇注方式将步骤1)中的合金液体浇注到轧辊型模中，带合金液体凝固成型后，卸压脱模得到轧辊铸件；
3)热处理，将步骤2)制得的轧辊铸件进行粗车加工得到半成品，随 后进行调质处理、淬火处理、冷处理、回火处理，最后进行精磨得到成品；冷处理温度为-30至5℃，该镀锌铝的轧辊的残余奥氏体重量百分比为8％-15％，硬度为93-95HSD。
进一步地，所述淬火处理的淬火温度为905-960℃。
进一步地，所述回火处理的回火温度为150-180℃，保温时间为80小时。
进一步地，所述回火处理为三段式回火热处理；
第一段，将半成品放入回火炉中，以50-60℃/h的速度升温至150-160℃后保温20小时；
第二段，继续以50-60℃/h的速度升温至160-170℃后保温20小时；
第三段，继续以50-60℃/h的速度升温至170-180℃后保温40小时。
本发明取得的有益效果：
在扩大奥氏体相区的同时，添加了Ni、Mn等元素，找到了满足生产工艺的残余奥氏体的临界点，即硬度的调整既能满足轧制力，又不允许轧辊在逐步使用到最小直径时，因轧制硬度低而无法使用。同时，利用不同合金成分和工艺的组合，在增加该镀锌铝的轧辊的耐腐蚀力的同时，又可使奥氏体稳定在不同的工作温度中，在提高了轧辊的表面质量的前提下增加了使用寿命。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，下面结合附图及实施例对本发明作进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
本发明提供了一种用于镀锌铝轧辊，其各成分的重量百分比为，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％，余量Fe，成分的总和为100％。轧辊残留奥氏体含量为8％-15％，硬度为：93-95HSD。
具体的：
实施例1
1)原料，按照重量百分比，C：0.80％、Si：0.9％、Ni：1.41％、Mn：0.75％、Cr：5.95％、Cu：0.05％、Mo：0.31％、Sb：0.005％、Bi：0.001％、Pb：0.001％、Sn：0.01％、As：0.003％、P：0.02％、S：0.003％，余量Fe，成分的总和为100％；
将原料置于中频感应电炉内熔炼，充分搅拌，制得合金溶液；
2)低温铸造，采用低压浇注方式将步骤1)中的合金液体浇注到轧辊型模中，带合金液体凝固成型后，卸压脱模得到轧辊铸件；
3)热处理，将步骤2)制得的轧辊铸件进行粗车加工得到半成品；
4)调质处理，将半成品加热至900℃，而后采用油冷却方式进行淬火，然后在加热到600℃进行回火。由于感应加热速度快，奥氏体相变温度升高，奥氏体中的碳浓度差增大。钢原始组织粗大，含有大块铁素体较多时，原大块铁素体部位在奥氏体化后往往会成为贫碳奥氏体，硬度下降。因此，在淬火前进行预备热处理，可以获得细小、均匀的组织，使轧辊芯部和辊颈达到良好机械性能，使轧辊的屈强比提高，有效提高轧辊疲劳寿命；同时为后期轧辊表面淬火做组织准备，调质以后轧辊部分碳化物弥散析出，这些碳化物在最终表面淬火中，更加容易溶解；并且可以改善基体组织，尤其是碳化物的分布。
调质处理之后进行半精加工、超声波探伤：根据加工图纸要求，在车床上进行半精加工，利用超声能透入金属材料的深处，并由一截面进入另一截面时，在界面边缘发生反射的特点来检查零件缺陷。然后进行淬火。
5)淬火处理，在淬火机床上，通过工频感应圈感应加热的方式将半成品加热至905℃；具体的，经过通电的感应圈内时，由于电磁感应在轧辊表面形成感应电流，从而使得表面被加热，通过测温反馈调整功率调节加热 温度，使轧辊表面得到一定的淬硬层深度和良好的硬度均匀性，通过中温回火使轧辊内应力减小，减少轧辊使用中的剥落，大大提高了中间辊的使用性。
6)冷处理，在-30℃温度下冷处理10小时。
7)回火处理，回火处理分为三段式回火热处理；
第一段，将半成品放入回火炉中，以50-60℃/h的速度升温至150-160℃后保温20小时；
第二段，继续以50-60℃/h的速度升温至160-170℃后保温20小时；
第三段，继续以50-60℃/h的速度升温至170-180℃后保温40小时。
8)精加工，对回火处理后的半成品进行表面打磨，制得成品。
本实施例获得的镀锌铝的轧辊的残余奥氏体重量百分比为8％，硬度为95HSD。
随后进行调质处理、淬火处理、冷处理、回火处理，最后进行精磨得到成品；冷处理温度为-30-5℃，该镀锌铝轧辊的残余奥氏体重量百分比为8％-15％，硬度为93-95HSD。
实施例2
1)原料，按照重量百分比，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％，余量Fe，成分的总和为100％；
将原料置于中频感应电炉内熔炼，充分搅拌，制得合金溶液；
2)低温铸造，采用低压浇注方式将步骤1)中的合金液体浇注到轧辊型模中，带合金液体凝固成型后，卸压脱模得到轧辊铸件；
3)热处理，将步骤2)制得的轧辊铸件进行粗车加工得到半成品；
4)调质处理，将半成品加热至900℃，而后采用油冷却方式进行淬火，然后在加热到600℃进行回火。由于感应加热速度快，奥氏体相变温度升高， 奥氏体中的碳浓度差增大。钢原始组织粗大，含有大块铁素体较多时，原大块铁素体部位在奥氏体化后往往会成为贫碳奥氏体，硬度下降。因此，在淬火前进行预备热处理，可以获得细小、均匀的组织，使轧辊芯部和辊颈达到良好机械性能，使轧辊的屈强比提高，有效提高轧辊疲劳寿命；同时为后期轧辊表面淬火做组织准备，调质以后轧辊部分碳化物弥散析出，这些碳化物在最终表面淬火中，更加容易溶解；并且可以改善基体组织，尤其是碳化物的分布。
调质处理之后进行半精加工、超声波探伤：根据加工图纸要求，在车床上进行半精加工，利用超声能透入金属材料的深处，并由一截面进入另一截面时，在界面边缘发生反射的特点来检查零件缺陷。然后进行淬火。
5)淬火处理，在淬火机床上，通过工频感应圈感应加热的方式将半成品加热至905℃；具体的，经过通电的感应圈内时，由于电磁感应在轧辊表面形成感应电流，从而使得表面被加热，通过测温反馈调整功率调节加热温度，使轧辊表面得到一定的淬硬层深度和良好的硬度均匀性，通过中温回火使轧辊内应力减小，减少轧辊使用中的剥落，大大提高了中间辊的使用性。
6)冷处理，在-10℃温度下冷处理10小时。
7)回火处理，回火处理分为三段式回火热处理；
第一段，将半成品放入回火炉中，以50-60℃/h的速度升温至150-160℃后保温20小时；
第二段，继续以50-60℃/h的速度升温至160-170℃后保温20小时；
第三段，继续以50-60℃/h的速度升温至170-180℃后保温40小时。
8)精加工，对回火处理后的半成品进行表面打磨，制得成品。
本实施例获得的镀锌铝的轧辊的残余奥氏体重量百分比为13％，硬度为94HSD。
实施例3
1)原料，按照重量百分比，C：1.2％、Si：1.5％、Ni：1.52％、Mn：0.9％、Cr：6.25％、Cu：0.1％、Mo：0.62％、Sb：0.01％、Bi：0.002％、Pb：0.002％、Sn：0.015％、As：0.01％、P：0.02％、S：0.003％，余量Fe，成分的总和为100％；
将原料置于中频感应电炉内熔炼，充分搅拌，制得合金溶液；
2)低温铸造，采用低压浇注方式将步骤1)中的合金液体浇注到轧辊型模中，带合金液体凝固成型后，卸压脱模得到轧辊铸件；
3)热处理，将步骤2)制得的轧辊铸件进行粗车加工得到半成品；
4)调质处理，将半成品加热至900℃，而后采用油冷却方式进行淬火，然后在加热到600℃进行回火。由于感应加热速度快，奥氏体相变温度升高，奥氏体中的碳浓度差增大。钢原始组织粗大，含有大块铁素体较多时，原大块铁素体部位在奥氏体化后往往会成为贫碳奥氏体，硬度下降。因此，在淬火前进行预备热处理，可以获得细小、均匀的组织，使轧辊芯部和辊颈达到良好机械性能，使轧辊的屈强比提高，有效提高轧辊疲劳寿命；同时为后期轧辊表面淬火做组织准备，调质以后轧辊部分碳化物弥散析出，这些碳化物在最终表面淬火中，更加容易溶解；并且可以改善基体组织，尤其是碳化物的分布。
调质处理之后进行半精加工、超声波探伤：根据加工图纸要求，在车床上进行半精加工，利用超声能透入金属材料的深处，并由一截面进入另一截面时，在界面边缘发生反射的特点来检查零件缺陷。然后进行淬火。
5)淬火处理，在淬火机床上，通过工频感应圈感应加热的方式将半成品加热至905℃；具体的，经过通电的感应圈内时，由于电磁感应在轧辊表面形成感应电流，从而使得表面被加热，通过测温反馈调整功率调节加热温度，使轧辊表面得到一定的淬硬层深度和良好的硬度均匀性，通过中温回火使轧辊内应力减小，减少轧辊使用中的剥落，大大提高了中间辊的使用性。
6)冷处理，在-10℃温度下冷处理10小时。
7)回火处理，回火处理分为三段式回火热处理；
第一段，将半成品放入回火炉中，以50-60℃/h的速度升温至150-160℃后保温20小时；
第二段，继续以50-60℃/h的速度升温至160-170℃后保温20小时；
第三段，继续以50-60℃/h的速度升温至170-180℃后保温40小时。
8)精加工，对回火处理后的半成品进行表面打磨，制得成品。
本实施例获得的镀锌铝的轧辊的残余奥氏体重量百分比为15％，硬度为93HSD。
以上仅为本发明的较佳实施例，并非用来限定本发明的实施范围；如果不脱离本发明的精神和范围，对本发明进行修改或者等同替换，均应涵盖在本发明权利要求的保护范围当中。

Claims (6)

  1. 一种用于镀锌铝板的轧辊，其特征在于，该轧辊的成分及其重量百分比为：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％，余量Fe，成分的总和为100％；所述轧辊残留奥氏体含量为8％-15％，硬度为：93-95HSD。
  2. 根据权利要求1所述的一种用于镀锌铝板的轧辊，其特征在于，该轧辊的成分及其重量百分比为：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％，余量Fe，成分的总和为100％。
  3. 一种用于镀锌铝板的轧辊的制备方法，其特征在于，包括：
    1)熔炼铸造合金钢，将原料置于中频感应电炉内，充分搅拌，制成合金液体；原料按照重量百分比的组分组成为：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％，余量Fe，成分的总和为100％；
    2)低温铸造，采用低压浇注方式将步骤1)中的合金液体浇注到轧辊型模中，带合金液体凝固成型后，卸压脱模得到轧辊铸件；
    3)热处理，将步骤2)制得的轧辊铸件进行粗车加工得到半成品，随后进行调质处理、淬火处理、冷处理、回火处理，最后进行精磨得到成品；冷处理温度为-30至5℃，该镀锌铝的轧辊的残余奥氏体重量百分比为8％-15％，硬度为93-95HSD。
  4. 根据权利要求3所述的一种用于镀锌铝板的轧辊的制备方法，其特征在于，所述淬火处理的淬火温度为905-960℃。
  5. 根据权利要求3所述的一种用于镀锌铝板的轧辊的制备方法，其特征在于，所述回火处理的回火温度为150-180℃，保温时间为80小时。
  6. 根据权利要求5所述的一种用于镀锌铝板的轧辊的制备方法，其特征在于，所述回火处理为三段式回火热处理；
    第一段，将半成品放入回火炉中，以50-60℃/h的速度升温至150-160℃后保温20小时；
    第二段，继续以50-60℃/h的速度升温至160-170℃后保温20小时；
    第三段，继续以50-60℃/h的速度升温至170-180℃后保温40小时。
PCT/CN2020/080612 2019-07-22 2020-03-23 一种用于镀锌铝板的轧辊及其制备方法 WO2021012692A1 (zh)

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

Publications (1)

Publication Number Publication Date
WO2021012692A1 true WO2021012692A1 (zh) 2021-01-28

Family

ID=68661697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/080612 WO2021012692A1 (zh) 2019-07-22 2020-03-23 一种用于镀锌铝板的轧辊及其制备方法

Country Status (2)

Country Link
CN (1) CN110527903B (zh)
WO (1) WO2021012692A1 (zh)

Families Citing this family (1)

* 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 (de) * 2017-07-10 2019-01-16 Saar-Pulvermetall GmbH Rolle für eine mahl- oder/und pressvorrichtung, insbesondere kollerrolle für eine presse zur herstellung von pellets, und verfahren zur herstellung der rolle
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 (de) * 2017-07-10 2019-01-16 Saar-Pulvermetall GmbH Rolle für eine mahl- oder/und pressvorrichtung, insbesondere kollerrolle für eine presse zur herstellung von pellets, und verfahren zur herstellung der rolle
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

Also Published As

Publication number Publication date
CN110527903A (zh) 2019-12-03
CN110527903B (zh) 2021-03-19

Similar Documents

Publication Publication Date Title
CN110499448B (zh) 一种性能优异的高n奥氏体不锈钢中厚板及其制造方法
JP5135868B2 (ja) 缶用鋼板およびその製造方法
CN102888568B (zh) 一种奥氏体节镍耐热钢板及其制造方法
MXPA97008775A (en) Process to produce steel pipe without seams of great strength having excellent resistance to the fissure by tensions by sulf
WO2021022542A1 (zh) 轧制-等温球化退火处理制备GCr15轴承钢的方法
EP2662460A1 (en) Tough bainitic heat treatments on steels for tooling
CA2828894C (en) A forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll
CN110453154B (zh) 一种700MPa级汽车扭力梁用钢材及其制备方法
US8920296B2 (en) Forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll
CN106884118A (zh) 锻造电渣复合高速钢轧辊及其制造方法
CN104593691A (zh) 大型锻造合金钢支承辊辊套及其制造方法
TWI557239B (zh) 高碳熱軋鋼板及其製造方法
TWI544086B (zh) 高碳熱軋鋼板及其製造方法
CN104120341A (zh) 一种轧制极薄材料的Cr5型锻钢工作辊及其制备方法
CN102268601A (zh) 50Cr3MoV支承辊用钢和热处理方法
CN102268588A (zh) 钢管减径机或定径机球墨铸铁轧辊及其制备方法
CN104694823B (zh) 一种超低碳高强韧性抗hic管线钢板及其制备方法
JP2018059196A (ja) 高強度極薄鋼板およびその製造方法
WO2021012692A1 (zh) 一种用于镀锌铝板的轧辊及其制备方法
CN105256245A (zh) 一种具有超深淬硬层的冷轧辊及其制造方法
JP2023527197A (ja) 耐遅れ破壊性を有する亜鉛電気めっき超高張力二相鋼およびその製造方法
CN104120342A (zh) 一种轧辊及其制备方法
WO2023137842A1 (zh) 一种具有高热扩散系数模具钢及其制备方法
CN111944969B (zh) 一种窄化高碳耐热不锈钢晶粒度的控制方法
CN111893393B (zh) 一种Mo-Ti合金耐磨中锰钢及其制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20843916

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20843916

Country of ref document: EP

Kind code of ref document: A1