US3259487A - High-strength wire rope - Google Patents

High-strength wire rope Download PDF

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Publication number
US3259487A
US3259487A US255411A US25541163A US3259487A US 3259487 A US3259487 A US 3259487A US 255411 A US255411 A US 255411A US 25541163 A US25541163 A US 25541163A US 3259487 A US3259487 A US 3259487A
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US
United States
Prior art keywords
steel
max
wire
wires
nitrogen
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
US255411A
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English (en)
Inventor
Howard E Mueller
Richard A Nickola
Gordon T Spare
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United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Priority to US255411A priority Critical patent/US3259487A/en
Priority to GB3019/64A priority patent/GB1041141A/en
Priority to BE643206D priority patent/BE643206A/fr
Priority to FR962064A priority patent/FR1381072A/fr
Application granted granted Critical
Publication of US3259487A publication Critical patent/US3259487A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3021—Metals
    • D07B2205/3025—Steel
    • D07B2205/3046—Steel characterised by the carbon content
    • D07B2205/3053—Steel characterised by the carbon content having a medium carbon content, e.g. greater than 0,5 percent and lower than 0.8 percent respectively HT wires

Definitions

  • high-strength rope or cable requires the use of heavily cold drawn, relatively highcarbon steel wire; e.g., cold drawn AISI grade C-1060 (carbon 0.55/0.65; manganese 0.60/0.90; silicon 0.10/ 0.30; phosphorus 0.04 maximum; sulphur 0.05 maximum), is commonly used for this purpose.
  • Cold drawing to effect a reduction in cross-sectional area of at least 60% is essential to develop the desired structure and strength level in the steel. Such cold drawing results in an undesired decrease in ductility and in rendering the steel age-hardenable.
  • the aging phenomenon has been attributed to the presence of nitrogen in the steel. It is known, for example, that aging is substantially eliminated in fully deoxidized low carbon steels to 'whichaluminum has been added in excess of the amount required for full combination with the nitrogen present; also that aging effects in steels are diminished by special steelmaking practices, e.g., vacuum casting, which reduce the nitrogen content to abnormally low levels. Both these expedients, however, add considerably to steelmaking and processing costs.
  • FIGURE 1 is a graph showing the effect of age hardening at 500 F. for various time intervals on the torsion ductility of a series of 0.60 carbon steels cold drawn from inch diameter rod to 0.095 inch diameter wire in accordance with normal wire drawing practices, and
  • FIGURE 2 is a similar graph but relating to a series of 0.60 carbon steels in which the nitrogen content has been adjusted to abnormally high and abnormally low levels.
  • the torsion ductility test is used to determine the suitability of wire for the manufacture of rope and cable.
  • the test comprises clamping a specimen of the wire between a fixed and a rotatable chuck spaced apart to expose a gage length of the wire equal to 100 times the wire diameter, and then twisting the specimen to failure.
  • Curve A is typical of wire drawn from the A181 C-l060 steels; Curve B shows the effect of decreasing the nitrogen content of such steels; Curve C, the effect of addition of sutficient aluminum to combine with the nitrogen nor- 3,259,487. Patented July 5, 1966 mally present in this grade; while Curve D is peculiar to a steel containing less than about 0.015% silicon but otherwise conforming to the C-l060 analysis.
  • ni- The latter are otherwise conventional and utilize iron and scrap of normally available composition to produce steels characterized by a normal nitrogen content, i.e. nitrogen ranging from about 0.004 to 0.008%.
  • nitrogen i.e. nitrogen ranging from about 0.004 to 0.008%.
  • the phosphorous and sulphur eliminations should be regulated to reduce these impurities to a maximum of at least 0.04 and.0.05% respectively, and preferably to about 0.015% phosphorus and 0.020% sulphur.
  • Aluminum is used only to the extent normally required by good ingot practice.
  • the final drafting must effect a reduction in area of between 75 and about 90%.
  • Any of conventional practice for stranding and laying a plurality of cold drawn wires into rope or cable may be used.
  • the present invention provides wire characterized by a torsion ductility value, T, of 30 or greater even after extending aging.
  • the rope manufactured therefrom is therefore of exceptional quality, service life and useful strength.
  • the invention has been described in relation to the 0.60% carbon steels most commonly used in highstrength wire rope and cable, it is also applicable in the manufacture of such products from higher carbon steels.
  • aging tendencies are diminished and an improvement in torsion ductility obtained by limiting silicon to 0.015 maximum in any cold drawn wire within the following composition range: carbon, 0.55/0.85; manganese, 0.35/ 1.20; phosphorus, 0.04 maximum; sulphur, 0.05 maximum; nitrogen, 0.004/0.0l2; balance iron and normal residuals.
  • the aluminum content preferably should not exceed about .07% to obtain the full benefits of the invention.
  • said cold drawn wires having a tensile strength in excess of 220,000 p.s.i.
  • said cold drawn wires having a tensile strength in excess of 220,000 p.s.i.
  • said cold drawn wires having a tensile strength in excess of 220,000 p.s.i.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Ropes Or Cables (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Continuous Casting (AREA)
  • Soft Magnetic Materials (AREA)
  • Corsets Or Brassieres (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Extraction Processes (AREA)
US255411A 1963-01-31 1963-01-31 High-strength wire rope Expired - Lifetime US3259487A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US255411A US3259487A (en) 1963-01-31 1963-01-31 High-strength wire rope
GB3019/64A GB1041141A (en) 1963-01-31 1964-01-23 High-strength wire rope
BE643206D BE643206A (forum.php) 1963-01-31 1964-01-30
FR962064A FR1381072A (fr) 1963-01-31 1964-01-30 Câble métallique de grande résistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US255411A US3259487A (en) 1963-01-31 1963-01-31 High-strength wire rope

Publications (1)

Publication Number Publication Date
US3259487A true US3259487A (en) 1966-07-05

Family

ID=26205634

Family Applications (1)

Application Number Title Priority Date Filing Date
US255411A Expired - Lifetime US3259487A (en) 1963-01-31 1963-01-31 High-strength wire rope

Country Status (4)

Country Link
US (1) US3259487A (forum.php)
BE (1) BE643206A (forum.php)
FR (1) FR1381072A (forum.php)
GB (1) GB1041141A (forum.php)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357822A (en) * 1964-06-26 1967-12-12 Sumitomo Metal Ind Low-carbon aluminum killed steel for high temperature applications
US3617230A (en) * 1969-04-09 1971-11-02 United States Steel Corp High-strength steel wire
US4233089A (en) * 1976-09-20 1980-11-11 Aktiebolaget Garphytte Bruk Low-alloyed steel for the preparation of valve spring wire
DE3240621A1 (de) * 1982-01-12 1983-09-08 Sumitomo Metal Industries, Ltd., Osaki, Osaka Stahldraht fuer den litzenstahlkern eines stahlverstaerkten aluminiumleiters und verfahren zu dessen herstellung
US5985044A (en) * 1994-12-15 1999-11-16 Sumitomo Metal Industries, Ltd. Forged, non-heat treated, nitrided steel parts and process of making
US20090274573A1 (en) * 2006-12-25 2009-11-05 Kei Miyanishi Machine Structural Steel Excellent in Machinability and Strength Properties
CN103541249A (zh) * 2013-10-14 2014-01-29 无锡通用钢绳有限公司 一种中碳钢丝绳及其生产工艺

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1565066A (en) 1976-09-07 1980-04-16 Dunlop Ltd Steel cords
FI118732B (fi) 2000-12-08 2008-02-29 Kone Corp Hissi
ES2302816T3 (es) 2001-06-21 2008-08-01 Kone Corporation Ascensor.
US9573792B2 (en) 2001-06-21 2017-02-21 Kone Corporation Elevator
FI119234B (fi) 2002-01-09 2008-09-15 Kone Corp Hissi

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357822A (en) * 1964-06-26 1967-12-12 Sumitomo Metal Ind Low-carbon aluminum killed steel for high temperature applications
US3617230A (en) * 1969-04-09 1971-11-02 United States Steel Corp High-strength steel wire
US4233089A (en) * 1976-09-20 1980-11-11 Aktiebolaget Garphytte Bruk Low-alloyed steel for the preparation of valve spring wire
DE3240621A1 (de) * 1982-01-12 1983-09-08 Sumitomo Metal Industries, Ltd., Osaki, Osaka Stahldraht fuer den litzenstahlkern eines stahlverstaerkten aluminiumleiters und verfahren zu dessen herstellung
US4525598A (en) * 1982-01-12 1985-06-25 Sumitomo Metal Industries, Ltd. Steel wire for use in stranded steel core of an aluminum conductor, steel reinforced and production of same
US5985044A (en) * 1994-12-15 1999-11-16 Sumitomo Metal Industries, Ltd. Forged, non-heat treated, nitrided steel parts and process of making
US20090274573A1 (en) * 2006-12-25 2009-11-05 Kei Miyanishi Machine Structural Steel Excellent in Machinability and Strength Properties
US20100124515A1 (en) * 2006-12-25 2010-05-20 Nippon Steel Corporation Machine structural steel excellent in machinability and strength properties
CN103541249A (zh) * 2013-10-14 2014-01-29 无锡通用钢绳有限公司 一种中碳钢丝绳及其生产工艺

Also Published As

Publication number Publication date
GB1041141A (en) 1966-09-01
FR1381072A (fr) 1964-12-04
BE643206A (forum.php) 1964-07-30

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