CN1019821B - 材料性能改善和良好可加工性的高强度钢，尤其钢筋或拉拔预制材料 - Google Patents

材料性能改善和良好可加工性的高强度钢，尤其钢筋或拉拔预制材料

Info

Publication number
CN1019821B
CN1019821B CN88108212A CN88108212A CN1019821B CN 1019821 B CN1019821 B CN 1019821B CN 88108212 A CN88108212 A CN 88108212A CN 88108212 A CN88108212 A CN 88108212A CN 1019821 B CN1019821 B CN 1019821B
Authority
CN
China
Prior art keywords
strength
steel
layer
transition
zone
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
Application number
CN88108212A
Other languages
English (en)
Other versions
CN1040057A (zh
Inventor
沃尔夫哥·施密特
弗兰茨·泰姆
哥特·兰华
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.)
Hennigsdorfer Stahl Engineering GmbH
Original Assignee
Hennigsdorfer Stahl Engineering GmbH
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 Hennigsdorfer Stahl Engineering GmbH filed Critical Hennigsdorfer Stahl Engineering GmbH
Publication of CN1040057A publication Critical patent/CN1040057A/zh
Publication of CN1019821B publication Critical patent/CN1019821B/zh
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/902—Metal treatment having portions of differing metallurgical properties or characteristics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

材料性能改善良好可加工性的高强度钢，尤其是钢筋或拉拔预制材料。该钢的横截面上的强度分布是不均匀的，其中在低强度表层和软心部之间的过渡区中有一层高强度马氏体层。表层同高强度过渡区一样，主要由回火马氏体组成，而心部区由珠光体或含一定量的贝氏体组织的铁索体和珠光体组成。本发明钢优先用于混凝土建筑的钢筋和作拉拔预制材料的小型钢材和线材规格。

Description

本发明涉及小型钢材和线材规格的高强度钢，它作为最终产品优先用于混凝土建筑的钢筋并可作为拉拔预制材料。
在合金化方面和工艺上提高钢筋强度的可能性，主要受可焊性和该种钢材性能的热稳定性要求的限制。因此，只要不进行附加的微合金化，用传统方法制造的轧后自然冷却状态的钢筋最多只相当于Ⅲ级强度。
Ⅳ级强度钢筋的制造，在由焊接性所确定的碳当量的情况下，对未微合金化的钢来说，要求使用附加工艺步骤，例如冷作硬化或钢的热加工硬化。在表层中产生局部马氏体转变的热加工硬化钢筋，在Ⅳ级强度时能具有全能的焊接性，而与此相反，相应的冷作硬化钢筋却只能进行接触点焊，因为在冷作硬化钢中在较低温度下已开始回复过程。
已知的热加工硬化钢筋，在铁素体-珠光体心部周围，由一层高强度的马氏体层组成，其强度随层厚增加而提高，而在该层中，材料性能的热稳定性则随层厚增加而降低。此外，该表层强度还影响钢筋的后继加工工序，例如弯曲和螺纹滚压。在线材轧机机列上制造这种钢时，由于硬化的表面层和线材刚性因而较大，在盘卷时必然会出现问题。
同热加工硬化钢筋相似，人们也已知拉拔预制材料，这种材料与常规铝浴处理不同，线材横截面的表层中具有相应的调质组织（DE-C
2345738）。为了确保线材的拉拔性能，不允许外层中的调质组织大于整个线材横截面的33%。
本发明致力于扩大材料技术和工艺对高强度钢筋所限制的强度提高的极限，并改善钢筋可加工性和具有不均匀组织的拉拔预制材料的拉拔性能，或者使其可以在小型钢材轧机上制造。
本发明的任务是，研制一种在横截面上具有不均匀组织的高强度钢，它以高强度钢筋形式主要确保其焊接性，且其盘绕性和可加工性得以改善，以及以拉拔预制材料形式使其能够有更好的拉拔性能。
本发明的这一任务是这样解决的，即该钢在横截面上具有不均匀的强度分布，其中在低强度的表层和软的心部之间的过渡区中存在一层高强度马氏体层。该钢组织的特征在于，外层同高强度过渡区一样，主要由回火马氏体组成，而表层的回火温度最高相当于该钢的A1温度，因而最好高于过渡区的高强度马氏体层的回火温度50～250℃，最多高350℃。而心部由珠光体或含有一定数量贝氏体的铁素体和珠光体组成。
钢的整个横截面上的两层马氏体的面积一般最多总计为50%，其中过渡区的高强度马氏体层占5～95%。
使该钢的横截面上强度不均匀分布的附加途径是，用向心部递减的回火温度级扩大由多个马氏体层组成的高强度马氏体过渡区。此外本发明所述的组织是可以调整的，其中表层类似于心部，由含有贝氏体成分的铁素体和珠光体组成。
实施例
通过下述一种高强度钢筋的实例说明本发明所提供的材料技术的可能性。
化学成分：0.24%C
0.45%Si
0.80%Mn
0.024%P
0.026%S
规格：25mm直径的圆钢。
该钢筋的组织由一层大约经670℃回火的1.2mm厚、抗拉强度约690MPa的马氏体表层，一层随之其后大约经520℃回火的1.8mm厚、抗拉强度约1000MPa的过渡层和一个抗拉强度约590MPa的铁素体-珠光体心部组成时，其总抗拉强度为710MPa。

Claims (5)

1、材料性能改善和良好可加工性的小型钢材和线材规格的高强度钢，尤其作为最终产品优先用于混凝土建筑的钢筋和作为拉拔预制材料，其特征在于，该钢的横截面上的强度分布是不均匀的，其中在低强度表层与软心部之间的过渡区有一层高强度马氏体层。
2、权利要求1所述的高强度钢，其特征在于，表层同高强度过渡层一样，主要由回火马氏体组成（此时外层回火温度最高等于该钢的A1温度，因而最好高于过渡区高强度马氏体层回火温度50～250℃，最多高350℃），同时心部由珠光体或含有一定量的贝氏体组织的铁素体和珠光体组成。
3、权利要求1或2所述的高强度钢，其特征在于，整个横截面上的两层马氏体层的面积一般最多总计为50%，其中过渡区中的高强度马氏体层占5～95%。
4、权利要求1至3中之一次所述的高强度钢，其特征在于，高强度马氏体过渡区由多个马氏体层（向心部回火温度逐渐降低）组成。
5、权利要求1所述的高强度钢，其特征在于，表层类似于心部，由含贝氏体组织的铁素体和珠光体组成。
CN88108212A 1988-01-08 1988-10-20 材料性能改善和良好可加工性的高强度钢，尤其钢筋或拉拔预制材料 Expired CN1019821B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DDWPC21D/312121.0 1988-01-08
DD88312121A DD268258A1 (de) 1988-01-08 1988-01-08 Hoeherfester stahl, insbesondere betonstahl bzw. ziehereivormaterial, mit verbesserten werkstoffeigenschaften und besserer verarbeitbarkeit

Publications (2)

Publication Number Publication Date
CN1040057A CN1040057A (zh) 1990-02-28
CN1019821B true CN1019821B (zh) 1992-12-30

Family

ID=5596466

Family Applications (1)

Application Number Title Priority Date Filing Date
CN88108212A Expired CN1019821B (zh) 1988-01-08 1988-10-20 材料性能改善和良好可加工性的高强度钢，尤其钢筋或拉拔预制材料

Country Status (11)

Country Link
US (1) US4913751A (zh)
JP (1) JPH01177323A (zh)
KR (1) KR910009869B1 (zh)
CN (1) CN1019821B (zh)
BG (1) BG60365B2 (zh)
BR (1) BR8805189A (zh)
DD (1) DD268258A1 (zh)
DE (1) DE3826091A1 (zh)
DK (1) DK726288A (zh)
IT (1) IT1227806B (zh)
MX (1) MX170307B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1298745C (zh) * 2005-05-30 2007-02-07 天津大学 低皂体系中乳液可自成膜的中空微球的制备方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD287735A5 (de) * 1989-09-06 1991-03-07 ���@�����`@���@��������@ �K@������ @�����������k�� Waermebehandelter stahl mit verbesserten mechanisch-technologischen werkstoffeigenschaften
DE4011486A1 (de) * 1990-04-09 1991-10-10 Inst Stahlbeton Bewehrung Ev Betonrippenstahl mit kaltgewalzten schraegrippen und dessen verwendung
DE4138991A1 (de) * 1991-11-27 1993-06-03 Saarstahl Ag Verfahren zum erzeugen von unterschiedlichen mechanischen eigenschaften zwischen rand- und kernbereich eines stahlkoerpers
CA2167213C (en) * 1993-07-16 2003-09-30 Richard E. Groh (Deceased) Method for using lightweight concrete, for producing a combination therefrom and a combination produced thereby
FR2836847B1 (fr) * 2002-03-05 2004-05-14 Coflexip Procede de fabrication de fil d'armure en acier plaque pour conduite tubulaire flexible de transport d'hydrocarbures, et conduite ainsi armee
EP3604594A1 (en) * 2017-03-30 2020-02-05 JFE Steel Corporation Hot pressed member and method for manufacturing same
CN107523668B (zh) * 2017-09-01 2019-06-25 华菱安赛乐米塔尔汽车板有限公司 一种无镀层变强度钢复合材料
MX2022011344A (es) * 2020-03-16 2022-10-10 Nippon Steel Corp Lamina de acero.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT193914B (de) * 1954-06-02 1957-12-10 Oesterr Alpine Montan Stahl für Bewehrungszwecke im Bauwesen
US4016015A (en) * 1972-10-31 1977-04-05 Centre De Recherches Metallurgiques-Centrium Voor Research In De Metallurgie Rolled steel rod or bar
BE790867A (fr) * 1972-10-31 1973-02-15 Centre Rech Metallurgique Procede pour ameliorer la qualite de produits lamines, tels quedes ronds ou des barres a beton, du fil machine, etc....
JPS5131616A (ja) * 1974-09-11 1976-03-17 Hitachi Ltd Taishokukyojinkononetsushoriho
BE824961A (fr) * 1975-01-29 1975-07-29 Rond en acier, de structure composite
US4146411A (en) * 1978-01-09 1979-03-27 British Steel Corporation Hot bar cooling
DE2801066A1 (de) * 1978-01-11 1979-07-12 British Steel Corp Verfahren zur erzeugung von stahlstaeben
JPS5573849A (en) * 1978-11-22 1980-06-03 Kawasaki Steel Corp Refined high strength steel of low surface hardness
DE2916218A1 (de) * 1979-04-21 1980-10-23 Florin Stahl Walzwerk Verfahren zur herstellung von walzstahlerzeugnissen mit mehrschichtigem gefuegeaufbau
JPS6156268A (ja) * 1984-08-24 1986-03-20 Nippon Steel Corp 高靭性高張力鋼およびその製造法
JPS6286125A (ja) * 1985-08-30 1987-04-20 Kobe Steel Ltd 高強度高靭性熱間圧延鋼材の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1298745C (zh) * 2005-05-30 2007-02-07 天津大学 低皂体系中乳液可自成膜的中空微球的制备方法

Also Published As

Publication number Publication date
KR910009869B1 (ko) 1991-12-03
DD268258A1 (de) 1989-05-24
KR890012011A (ko) 1989-08-23
US4913751A (en) 1990-04-03
BG60365B2 (en) 1994-09-30
DK726288D0 (da) 1988-12-28
IT8823132A0 (it) 1988-12-28
DK726288A (da) 1989-07-09
BR8805189A (pt) 1990-05-22
MX170307B (es) 1993-08-16
IT1227806B (it) 1991-05-07
CN1040057A (zh) 1990-02-28
JPH01177323A (ja) 1989-07-13
DE3826091A1 (de) 1989-07-20

Similar Documents

Publication Publication Date Title
US4572748A (en) Method of manufacturing high tensile strength steel plates
CN101784688B (zh) 具有高拉伸强度和延展特性的钢片材的制造方法以及由此获得的片材
EP1918397A1 (en) Seamless steel pipe for line pipe and method for producing same
DE2919156A1 (de) Verfahren zur herstellung von hochwertigen schienen mit hoher schweissbarkeit
CA3083365C (en) Steel section having a thickness of at least 100mm and method of manufacturing the same
CN1019821B (zh) 材料性能改善和良好可加工性的高强度钢，尤其钢筋或拉拔预制材料
JP3724119B2 (ja) 建築構造用圧延棒鋼及びその製造方法
CN110527920A (zh) 一种60～80mm特厚耐磨钢板及其生产方法
CN102953017B (zh) 一种低屈强比高强度连续油管用钢及其制造方法
JPH01279709A (ja) 直接焼入れによるプラスチック金型用プレハードン鋼の製造方法
JPS5919173B2 (ja) 溶接性低合金熱処理硬頭レ−ルの製造法
JP7254211B2 (ja) 超高強度鉄筋およびその製造方法
JPH05295448A (ja) 過共析鋼線材の製造方法
JPH0454728B2 (zh)
JPS58141334A (ja) ６０Ｋｇｆ／ｍｍ↑２以上の引張強さを有し加工性、溶接性の優れた熱延鋼板の製造法
JPH02129317A (ja) 溶接性の優れた８０Ｋｇｆ／ｍｍ↑２級高張力鋼の製造法
JPH10265844A (ja) 低降伏比鋼材およびその製造方法
CN114174542A (zh) 用于由成形的高强度钢制造焊接构件的方法和用于此目的的构件
JPS623214B2 (zh)
US5538044A (en) Welded steel pipe steel and welded steel pipe having good wear
JPH0765142B2 (ja) 海底光フアイバ−ケ−ブル用異形線
JPS6256523A (ja) 溶接性付与高強度レ−ルの製造法
JPS63195257A (ja) 高強度部材の製造方法
JPH0718330A (ja) 高強度高靭性鋼管の製造方法
WO2024038612A1 (ja) 厚鋼板およびその製造方法

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C53 Correction of patent of invention or patent application
CB02 Change of applicant information

Applicant after: Hennigsdorfer Stahl Engineering GmbH

Applicant before: Hennig J Dover Steel Ltd

COR Change of bibliographic data

Free format text: CORRECT: APPLICANT; FROM: MOSELL CARL G C TO: MOSELL CARL G C

C13 Decision
GR02 Examined patent application
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
OR01 Other related matters
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee