US3315335A - Stress-rupture perforated strip and method of production - Google Patents

Stress-rupture perforated strip and method of production Download PDF

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Publication number
US3315335A
US3315335A US338434A US33843464A US3315335A US 3315335 A US3315335 A US 3315335A US 338434 A US338434 A US 338434A US 33843464 A US33843464 A US 33843464A US 3315335 A US3315335 A US 3315335A
Authority
US
United States
Prior art keywords
strip
relatively
ductile
rupture
stress
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
US338434A
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English (en)
Inventor
Frank A Witt
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.)
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 US338434A priority Critical patent/US3315335A/en
Priority to GB142/65A priority patent/GB1041161A/en
Priority to BE658200A priority patent/BE658200A/xx
Priority to FR1724A priority patent/FR1447179A/fr
Priority to NL6500519A priority patent/NL6500519A/xx
Application granted granted Critical
Publication of US3315335A publication Critical patent/US3315335A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
    • 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
    • Y10T29/496—Multiperforated metal article making

Definitions

  • This invention relates to the multiple perforation of relatively hard foil-like strip, sheet, and the like by subjecting same to pack rolling with relatively thicker strips of softer material, whereby the soft material is elongated and distends with it the hard material, resulting in its perforation by rupture.
  • the invention is applicable to the perforation of tinplate, steel, copper, bronze, nickel, silver, lead, and any other metallic, quasi-metallic, or other materials with similar physical properties as regards rupture on distension when rolled between more plastically extensible media.
  • the perforated strip of the invention is suitable as a filter medium, for example, as a substitute for woven mesh and steel wool in gas and liquid filters.
  • FIGURE 1 diagrammatically depicts a sandwich pack construction of hard and soft materials in process of being reduced by rolling to produce the product of the invention.
  • FIGURES 2 and 3 depict optional variations of pack construction suitable for rolling to obtain the product of the invention.
  • FIGURE 4 is a pen and ink tracing of a photograph of an example of the product of the invention, at 20X magnification.
  • FIGURE 1 shows relatively hard sheet material 1, of relatively low ductility, in a sandwich pack with softer and more ductile material which is susceptible of relatively ready reduction by rolling.
  • the figure depicts the material before and after rolling, from left to right, between work rolls 3, having back-up rolls 4, in a conventional cold reduction mill for steel strip and the like.
  • the total thickness of the pack is reduced; however, the thickness of the strip having low ductility undergoes a relatively low proportionate reduction in actual thickness.
  • Principal reduction in the pack is due to the soft elements thereof, which elongate and carry along the low ductility material, which latter material appears to become partially imbedded in the soft material during rolling.
  • the resulting stress of the low ductility material results in its extension by multiple rupture, as shown in FIGURE 4, wherein the base material is 5 and the perforations are 6.
  • low ductility strips 1a, 1b may be rolled simultaneously.
  • the soft material, for stressing the material of low ductility need be on no more than one side of the latter.
  • the outer layers 2 of a pack such as shown in FIGURE 1 were of annealed blackplate, of the foregoing composi tion, 0.0066 inch thick and having a tensile yield strength of approximately 45,000 p.s.i.
  • FIGURE 4 The product of FIGURE 4 was produced by rolling the pack to an overall reduction of 60%. Reductions of 40% yielded comparative ruptures.
  • concomitant pack materials may be employed, so long as they are sufiiciently adapted to flow more readily under rolling than the material being perforated and are of sufficient thickness, together with strength characteristics, to carry the material being perforated with them upon pack reduction.
  • the initial thickness of the former should be several times that of the latter, and may be in the order of five to ten times. Excessive thicknesses of the softer material are generally undesirable from an economic standpoint.
  • the perforations are relatively uniform in size and fairly evenly spaced as would be the case at any given pack reduction.
  • the perforations present an irregular outline, resulting from the tearing action imposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metal Rolling (AREA)
US338434A 1964-01-17 1964-01-17 Stress-rupture perforated strip and method of production Expired - Lifetime US3315335A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US338434A US3315335A (en) 1964-01-17 1964-01-17 Stress-rupture perforated strip and method of production
GB142/65A GB1041161A (en) 1964-01-17 1965-01-01 Stress-rupture perforated strip and method of rolling the strip
BE658200A BE658200A (pt) 1964-01-17 1965-01-12
FR1724A FR1447179A (fr) 1964-01-17 1965-01-13 Feuillard perforé de déchirures obtenues par rupture et procédé pour le fabriquer
NL6500519A NL6500519A (pt) 1964-01-17 1965-01-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US338434A US3315335A (en) 1964-01-17 1964-01-17 Stress-rupture perforated strip and method of production

Publications (1)

Publication Number Publication Date
US3315335A true US3315335A (en) 1967-04-25

Family

ID=23324810

Family Applications (1)

Application Number Title Priority Date Filing Date
US338434A Expired - Lifetime US3315335A (en) 1964-01-17 1964-01-17 Stress-rupture perforated strip and method of production

Country Status (5)

Country Link
US (1) US3315335A (pt)
BE (1) BE658200A (pt)
FR (1) FR1447179A (pt)
GB (1) GB1041161A (pt)
NL (1) NL6500519A (pt)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127146A (en) * 1988-12-14 1992-07-07 Sulzer Brothers, Ltd. Method for production of thin sections of reactive metals
US5903813A (en) * 1998-07-24 1999-05-11 Advanced Materials Products, Inc. Method of forming thin dense metal sections from reactive alloy powders
US20040088840A1 (en) * 2001-02-22 2004-05-13 Dan Miller Aluminium foil rolling method
US20100242559A1 (en) * 2009-03-24 2010-09-30 Saenz De Miera Vicente Martin Method of producing aluminum products
CN107234133A (zh) * 2017-04-13 2017-10-10 华峰日轻铝业股份有限公司 一种解决铝基复合材料轧制粘合过程中产生气泡的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134131A (ja) * 1984-07-26 1986-02-18 Tomokazu Takeuchi 多孔質金属製薄箔とその製造方法
US5219617A (en) * 1989-09-19 1993-06-15 Michigan Chrome And Chemical Company Corrosion resistant coated articles and process for making same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516098A (en) * 1922-03-31 1924-11-18 Hoyt Metal Company Method of making rolled metal sheets
US2468206A (en) * 1945-04-07 1949-04-26 Superior Steel Corp Bimetallic billet
US2972795A (en) * 1957-08-13 1961-02-28 Crompton & Knowles Corp Process for treating textile materials
US3114202A (en) * 1960-03-24 1963-12-17 Olin Mathieson Method of pressure welding metal sheets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516098A (en) * 1922-03-31 1924-11-18 Hoyt Metal Company Method of making rolled metal sheets
US2468206A (en) * 1945-04-07 1949-04-26 Superior Steel Corp Bimetallic billet
US2972795A (en) * 1957-08-13 1961-02-28 Crompton & Knowles Corp Process for treating textile materials
US3114202A (en) * 1960-03-24 1963-12-17 Olin Mathieson Method of pressure welding metal sheets

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127146A (en) * 1988-12-14 1992-07-07 Sulzer Brothers, Ltd. Method for production of thin sections of reactive metals
US5903813A (en) * 1998-07-24 1999-05-11 Advanced Materials Products, Inc. Method of forming thin dense metal sections from reactive alloy powders
US20040088840A1 (en) * 2001-02-22 2004-05-13 Dan Miller Aluminium foil rolling method
US20100242559A1 (en) * 2009-03-24 2010-09-30 Saenz De Miera Vicente Martin Method of producing aluminum products
CN107234133A (zh) * 2017-04-13 2017-10-10 华峰日轻铝业股份有限公司 一种解决铝基复合材料轧制粘合过程中产生气泡的方法

Also Published As

Publication number Publication date
FR1447179A (fr) 1966-07-29
GB1041161A (en) 1966-09-01
BE658200A (pt) 1965-07-12
NL6500519A (pt) 1965-07-19

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