CN1068634C - 复合辊 - Google Patents

复合辊 Download PDF

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Publication number
CN1068634C
CN1068634C CN96110197A CN96110197A CN1068634C CN 1068634 C CN1068634 C CN 1068634C CN 96110197 A CN96110197 A CN 96110197A CN 96110197 A CN96110197 A CN 96110197A CN 1068634 C CN1068634 C CN 1068634C
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roll
cast iron
cast
roller
casting
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Expired - Lifetime
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CN96110197A
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CN1145828A (zh
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K·J·马德鲁德
J·E·卡尔桑
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Sandvik Intellectual Property AB
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Sandvik AB
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    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49549—Work contacting surface element assembled to core

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Geometry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Friction Gearing (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Glass Compositions (AREA)

Abstract

本发明涉及包括硬质合金和铸铁的轧辊。此轧辊可用于热轧和冷轧。铸铁野除铁外还有下列成分：用重量百分率表示：硅：1.9～2.8，镁：0.02～0.10，镍：0.5～4，锰：0.1～1，且碳当量为2.5～6。

Description

复合辊
本发明涉及包括至少一个硬质合金圈和球墨铸铁壳体的复合辊。此复合辊可用作整体辊，也可用作辊套固定在驱动心轴上。
用于热轧或冷轧的带有硬质合金的复合辊包括一个或多个硬质合金圈，且将铸铁壳体以多种联接和锁定装置固定在(驱动)心轴上。关于这种轧辊存在一个问题，即在铸造冷却过程中，壳体收缩量大于硬质合金圈收缩量，从而在硬质合金圈上产生了指向内部的力，导致了在硬质合金圈外表面的向心拉应力，此应力垂直作用于轧制过程中轧辊表面的微裂纹。在这些拉应力的作用下，微裂纹向深处扩展，这可以导致轧辊的破坏或需要过多的磨削量，限制了轧辊的总轧制能力。
在美国5,044,056号专利中叙述了解决这个问题的一个办法：将一个或多个硬质合金圈镶铸进一个基本为石墨铸铁的壳体中。该壳体的铸造组织为贝氏体和残余奥氏体，残余奥氏体优选15-20wt-％，且经一个或多个后续热处理工序全部或部分地转化为贝氏体。这样可获得有利的应力状态。然而这种热处理操作花费大且费时，趋向于被淘汰。美国5,248,289号和5,359,772号专利中透露，也可通过同样的方法制造整体辊并保持铸铁和硬质合金间的良好结合。然而对一根长为2500mm的整体辊进行热处理，需要大容积的加热炉和长周期的热处理以增加从进料到出料的时间。最终得到贝氏体和残余奥氏体的混合组织，给机加工带来困难。
根据本发明采用一种合金，得到一种组织为珠光体和铁素体的铸造材料，它不需要轧辊的后续热处理可以得到理想的应力状态及牢固的金属结合。铸铁在未热处理的铸造状态下易于机加工，且在轧辊使用过程中达到硬度、韧性和强度的良好统一。
图1表示由硬质合金圈(2)和待安装在心轴上的铸铁壳体(1)组成的一个复合辊。
图2表示包括辊身、辊颈及一个镶铸的硬质合金圈的整体辊。
图3表示依据本发明的球墨铸铁的显微组织。其中：
3-石墨团
4-珠光体
5-铁素体
根据本发明硬质合金被镶铸进石墨铸铁，铸铁的成分已调整至碳当量为2.5～6，优选3.5～5，C当量=C％+0.3·(Si％+P％)。将铁硅镁合金和/或镍镁合金添加到铸造合金中，使镁含量达到0.02～0.10wt-％，优选0.04～0.07wt-％。加铁硅合金孕育处理(inocnlation)，使铸铁的硅含量达到1.9～2.8wt-％，优选2.1～2.5wt-％。由此获得石墨以球状弥散分布的球墨铸铁。此外，用抑制碳扩散的元素对该铸铁进行合金化，优选加入0.5～4wt-％的镍，优选1～2wt-％，以及0.1～1.0wt-％锰，优选0.6～0.7wt-％，最终组织为铁素体和体积比不少于40％的珠光体，残余奥氏体的体积比小于5％。镍和/或铜可以用不超过1wt-％的钼部分替代。当轧辊的铸铁部分重量超过1000kg，宜添加小于2wt-％，优选0.01～1wt-％铜。在铸造后的状态下，轧辊的铸铁部分重200～1000kg，轧辊上的铸铁的布氏硬度为190～250。
在一个实施方案里，轧辊是包括辊身、辊颈及至少一个硬质合金圈的整体辊，辊身和辊颈可采用另一种铸造合金。例如，图1表示了由一个硬质合金圈2和待安装在心轴上的铸铁壳体构成的复合辊。图2表示包括辊身和辊颈11及一个镶铸的硬质合金圈2的整体辊。图3表示了轧辊中球墨铸铁的显微组织，含石墨团3，珠光体4和铁素体5。
在另一可选择的实施方案中，轧辊包括一个或多个硬质合金圈，这些圈镶铸成一个环形的壳体，并通过各种联接和锁定位置固定到(驱动)心轴上。
本发明中提供了一种方法，用以制造包括辊身、辊颈的整体辊或把硬质合金圈单独镶铸成环形壳体且固定在心轴上，这些辊可用于冷轧或热轧。按照该方法，至少一个烧结的硬质合金圈安装到铸型上，它的内表面和侧面自由地与铸铁接触，填充铸型的铁水具有前述的成分和适宜的温度。冷却到室温以后，对轧辊进行清理和机加工，以获得最后的形状和尺寸。
一个实施方案，用静态方式进行浇铸。
在一个优选实施方案中，轧辊采用静态浇铸铸成，铸型的浇口指向硬质合金圈内表面的切向方向。
在另一实施方案中，铸件通过离心铸造制成。铸型是旋转的，当达到大约400转/分的适当速度时，铁水被注入旋转的铸型。在大约一分钟的浇注时间里旋转速度不断减小。结果液态金属被抛在铸型的型壁上，在离心力作用下凝固结晶，也可把硬质合金圈镶铸进前述的铸铁壳体，之后辊身和辊颈通过离心铸造或静态铸造用另一种合金铸成。
为了在硬质合金和铸铁之间获得最佳的金属结合，需使料槽里的铁水过热200～300℃，同时限制填模量和离心铸造的预定旋转速度，以获得硬质合金圈不在型砂内浇注的部分的表面层平衡的加热和熔化，也就是将金属结合到铸铁上的部分。硬质合金和铸铁之间1～5mm宽的过渡区比较好。
在机加工至最终形状和尺寸后，本复合辊包含整体辊或辊套。现有轧辊铸造的困难是需要大容积的热处理炉，且热处理的费用高而费时，这些都可根据本发明采用铸造合金得以消除。
实施例：
在型砂里浇铸一个硬质合金圈，其组成为70％碳化钨，13％钴，15％镍，2％铬(都是用重量百分数表示)。硬质合金圈的尺寸：
外径：340mm    内径：260mm
宽：100mm
浇铸后，硬质合金圈的内表面和在内径与310mm直径之间的侧表面是自由的，以便在硬质合金和铸铁之间产生金属结合。
在一个浇口方向与硬质合金圈内表面相切的铸型里静态浇铸轧辊。在1540℃温度下，铁水注入铸型，其成分为3.5％碳，2.2％硅，0.6％锰，1.65％镍，0.05％镁，其余为铁(全为重量百分率)，浇注时间大约持续一分钟。复合辊冷却后，清洗后用超声波进行检查。金属结合性能良好。
轧辊尺寸是：辊身：φ310mm(硬质合金φ340mm)×500mm。辊颈：φ220×300mm+φ220×520mm

Claims (5)

1.复合辊，包含至少一个硬质合金圈，该圈镶铸进基本由石墨铸铁组成的铸造合金，其特征在于铸铁除铁外，含有下列成分，都用重量百分率表示，
硅：2.1～2.5    镁：0.04～0.07
镍：1～2        锰：0.6～0.7
且碳当量为3.5～5。
2．根据权利要求1的辊，其特征在于当轧辊铸铁部分重量超过1000公斤时，铸铁还含有＜2wt％铜。
3．根据权利要求2的辊，其中铸铁还含有0.01-1wt％铜。
4．根据权利要求1或2的辊，其特征在于铸铁含有大于40％体积比的珠光体。
5．权利要求1的复合辊，用于热轧或冷轧。
CN96110197A 1995-07-14 1996-07-12 复合辊 Expired - Lifetime CN1068634C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9502639A SE504707C2 (sv) 1995-07-14 1995-07-14 Kompositvalls med hårdmetall och gjutjärn
SE9502639-9 1995-07-14

Publications (2)

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CN1145828A CN1145828A (zh) 1997-03-26
CN1068634C true CN1068634C (zh) 2001-07-18

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US (2) US6095958A (zh)
EP (1) EP0753594B1 (zh)
JP (1) JP3977461B2 (zh)
KR (1) KR100415367B1 (zh)
CN (1) CN1068634C (zh)
AT (1) ATE187988T1 (zh)
AU (1) AU714031B2 (zh)
BR (1) BR9603067A (zh)
CA (1) CA2180516A1 (zh)
DE (1) DE69605723T2 (zh)
ES (1) ES2142040T3 (zh)
RU (1) RU2158640C2 (zh)
SE (1) SE504707C2 (zh)
ZA (1) ZA965690B (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827861A1 (de) * 1997-06-27 1999-01-07 Mitsubishi Materials Corp Verbundwalze mit hervorragender Beständigkeit gegen Thermoschock
DE19750144A1 (de) * 1997-11-12 1999-06-02 Krupp Polysius Ag Verfahren zur Herstellung einer Mahlwalze
CN1416374A (zh) * 2000-05-16 2003-05-07 川崎制铁株式会社 超硬合金复合轧辊及使用它的热轧钢方法
KR100435324B1 (ko) * 2001-12-27 2004-06-10 현대자동차주식회사 고온 내산화성을 갖는 내열구상흑연주철
FI118738B (fi) 2005-01-05 2008-02-29 Metso Paper Inc Pallografiittivalurauta ja menetelmä pallografiittivaluraudan valmistamiseksi lujuutta ja sitkeyttä vaativia koneenrakennusosia varten
DE102007028823A1 (de) * 2007-06-20 2008-12-24 Siemens Ag Verfahren zur Herstellung eines Blechs in einer Walzstraße
DE102007028824B3 (de) * 2007-06-20 2009-02-19 Siemens Ag Verfahren zur Herstellung eines Blechs in einer Walzstraße
US8400035B2 (en) * 2008-12-27 2013-03-19 Schlumberger Technology Corporation Rotor bearing assembly
MX357864B (es) * 2011-11-21 2018-07-25 Hitachi Metals Ltd Rodillo compuesto fundido centrífugamente y su método de producción.
EP3116671B1 (en) 2014-03-14 2024-05-15 Hyperion Materials & Technologies (Sweden) AB Method of forming a compound roll

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374116A1 (en) * 1988-12-13 1990-06-20 Sandvik Aktiebolag Roll ring, comprising cemented carbide and cast iron, and method for manufacture of the same
EP0464780A1 (en) * 1990-07-04 1992-01-08 Kubota Corporation Abrasion-resistant cast iron material for rolling rolls and composite rolls

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609849A (en) * 1969-04-09 1971-10-05 Jan M Krol Forming rolls
SE399911C (sv) * 1976-02-05 1980-02-18 Sandvik Ab Slitdetalj med hog slitstyrka och god hallfasthet, sammansatt av hardmetall och gjutjern
US4396442A (en) * 1981-05-15 1983-08-02 Kubota Ltd. Ductile cast iron roll and a manufacturing method thereof
US5167067A (en) * 1988-12-13 1992-12-01 Sandvik Ab Method of making a roll with a composite roll ring of cemented carbide and cast iron
US5104458A (en) * 1988-12-13 1992-04-14 Sandvik Ab Method for manufacture of a roll ring comprising cemented carbide and cast iron
US5044056A (en) * 1988-12-13 1991-09-03 Sandvik Ab Roll ring comprising a ring of cemented carbide metallurgically bonded to a cast iron body
US5248289A (en) * 1989-12-13 1993-09-28 Sandvik Ab Cast iron roll with one or more cemented carbide roll rings metallurgically bonded thereto
US5359772A (en) * 1989-12-13 1994-11-01 Sandvik Ab Method for manufacture of a roll ring comprising cemented carbide and cast iron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374116A1 (en) * 1988-12-13 1990-06-20 Sandvik Aktiebolag Roll ring, comprising cemented carbide and cast iron, and method for manufacture of the same
EP0464780A1 (en) * 1990-07-04 1992-01-08 Kubota Corporation Abrasion-resistant cast iron material for rolling rolls and composite rolls

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Publication number Publication date
SE9502639L (sv) 1997-01-15
JP3977461B2 (ja) 2007-09-19
KR970005425A (ko) 1997-02-19
AU5611996A (en) 1997-01-23
AU714031B2 (en) 1999-12-16
SE504707C2 (sv) 1997-04-07
BR9603067A (pt) 1998-05-05
ATE187988T1 (de) 2000-01-15
CN1145828A (zh) 1997-03-26
US6490793B1 (en) 2002-12-10
EP0753594A1 (en) 1997-01-15
US6095958A (en) 2000-08-01
EP0753594B1 (en) 1999-12-22
KR100415367B1 (ko) 2004-04-14
JPH0931591A (ja) 1997-02-04
DE69605723T2 (de) 2000-05-31
SE9502639D0 (sv) 1995-07-14
ES2142040T3 (es) 2000-04-01
RU2158640C2 (ru) 2000-11-10
DE69605723D1 (de) 2000-01-27
ZA965690B (en) 1997-01-24
CA2180516A1 (en) 1997-01-15

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