WO2009064217A1 - Procédé de fabrication de produits semi-finis allongés à grain ultrafin - Google Patents

Procédé de fabrication de produits semi-finis allongés à grain ultrafin Download PDF

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Publication number
WO2009064217A1
WO2009064217A1 PCT/RU2008/000670 RU2008000670W WO2009064217A1 WO 2009064217 A1 WO2009064217 A1 WO 2009064217A1 RU 2008000670 W RU2008000670 W RU 2008000670W WO 2009064217 A1 WO2009064217 A1 WO 2009064217A1
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WO
WIPO (PCT)
Prior art keywords
deformation
rotation
dies
finished products
conical
Prior art date
Application number
PCT/RU2008/000670
Other languages
English (en)
Russian (ru)
Inventor
Georgij Iosifovich Raab
Arsenij Georgievich Raab
Original Assignee
Gosudarstvennoe Obrazovatel'noe Uchrezhdenie Vysshego Professional'nogo Obrazovanija Ufimskij Gosudarstvennyj Aviatsionnyj Tekhnicheskij Universitet
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 Gosudarstvennoe Obrazovatel'noe Uchrezhdenie Vysshego Professional'nogo Obrazovanija Ufimskij Gosudarstvennyj Aviatsionnyj Tekhnicheskij Universitet filed Critical Gosudarstvennoe Obrazovatel'noe Uchrezhdenie Vysshego Professional'nogo Obrazovanija Ufimskij Gosudarstvennyj Aviatsionnyj Tekhnicheskij Universitet
Publication of WO2009064217A1 publication Critical patent/WO2009064217A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies

Definitions

  • the invention relates to the processing of metals by pressure, can be used in mechanical engineering, aircraft engine in the manufacture of long metal billets, for example, rods and wires with ultrafine-grained (UFG) material structure with improved physical and mechanical properties.
  • UFG ultrafine-grained
  • the method of producing ultrafine-grained preforms involves intensive plastic deformation of the preform in the vertical and horizontal channels with the movement of the preform in the latter with a backing of plastic material.
  • the back pressure is controlled by changing the resistance to deformation of the plastic material.
  • Changing the resistance to deformation of a plastic material is carried out by heating and cooling.
  • the outflow of plastic material at the exit of the horizontal channel is carried out stepwise with a different value of the cross section. The result is an increase in the quality of the workpieces and a decrease in the complexity of adjusting the back pressure.
  • drawing To process long workpieces such as wire, drawing is most often used.
  • a known method of drawing (RF patent JN ° 2043799, IPC B21C 1/00, publ. September 20, 1995), according to which the workpiece is deflected from the drawing axis before entering the deformation zone, forming a loop.
  • a rotation is applied to the loop around the axis of application of the pulling force, and an additional rotation about its axis is reported to the portion of the workpiece in the form of a loop.
  • the method allows to reduce the drag force and thus increase the performance and durability of the die. But it does not provide additional improvement in the mechanical properties of long metal blanks.
  • the method includes pulling a workpiece through a series of consecutive dies with the simultaneous rotation of one or more dies.
  • the rotation of the next die is carried out before deformation of the workpiece in a non-rotating fiber, after which a pulling force is applied, or before the application of a pulling force, after which pulling through a non-rotating fiber is carried out (RF patent JN 2252091, IPC B21C 1/00, publ. 05.20.2005)
  • this method does not allow to increase the level of accumulated deformation in one processing cycle and is ineffective for additional grinding of the material structure and, accordingly, to increase its mechanical properties.
  • the objective of the invention is to obtain a qualitatively new increase a complex of mechanical properties in long billets with low costs for their production due to the formation of the UFG structure and the use of standard metallurgical equipment.
  • the problem is achieved by the method of obtaining UFG semi-finished products by drawing with a shift, including deformation of the original workpiece by applying a pulling force through two conical cones arranged in series with the possibility of rotation, in which, unlike the prototype, the fibers are arranged in such a way that they create a continuous conical channel of deformation, and rotation dies provide additional shear deformation by a given eccentricity of the symmetry axes of the workpiece at the inlet and outlet of the deformation channel o in relative rotation axis formed by the conical channel of dies.
  • cyclic rotation of the dies is 1/2 turn.
  • one of the dies is rotated.
  • the proposed invention allows to create in the process of relative rotation of the die due to the formed eccentricity a shear deformation scheme, which, as is known, leads to the most efficient grinding of the initial structure. Also, in the process of drawing, due to the applied pulling force, a tensile deformation scheme is realized, which occurs during reduction from a larger diameter to a smaller one.
  • the combination of schemes of shear and tensile deformation provides nonmonotonic intense deformation during processing, which also increases the efficiency of grinding the structure.
  • the invention is illustrated by the drawing, which shows a diagram of the processing of long semi-finished products by drawing in conical dies.
  • the diagram indicates: billet wire 1, movable conical wire 2, motionless conical dragging 3, capture 4.
  • the method is as follows.
  • a wire 1 of a certain cross section is fed into a conical channel formed by dies 2 and 3.
  • the cone channels of each of the dies have a geometry that provides an eccentricity ⁇ between the axis of rotation of the movable die 2 and the axis of symmetry of the workpiece 1.
  • a pulling force P to the end of the workpiece by means of gripping 4 it undergoes deformation by drawing.
  • it is deformed by a shift during rotation of the moving die relatively stationary due to the formed eccentricity ⁇ .
  • P is the drag force, e m i n, ma ⁇ is the accumulated deformation in one processing cycle.
  • the proposed invention allows by increasing In order to ensure the accumulated deformation, the formation of an ultrafine-grained structure of the workpiece material is ensured and, as a result, the mechanical properties of the resulting semi-finished product are significantly improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Forging (AREA)

Abstract

L'invention concerne la fabrication de produits semi-finis allongés à grain ultrafin et vise à obtenir une structure qui améliore un ensemble de propriétés mécaniques dans des matériaux métalliques allongés présentant un rapport entre la longueur et le diamètre supérieur à 100 par voie de traitement par déformation. Le procédé comprend l'étirage à décalage qui inclut la déformation du métal grâce à l'application d'une force d'étirage via deux filières coniques disposées l'une après l'autre, une des filières étant mise en rotation simultanément. Le processus de déformation est accompagné de modifications des propriétés physico-chimiques du métal, avec de faibles coûts de fabrication grâce à la rotation d'une des filières qui assure une déformation de cisaillement supplémentaire grâce à une excentricité prédéterminée par rapport à l'axe de rotation, qui est générée par le canal conique des filières.
PCT/RU2008/000670 2007-11-12 2008-10-28 Procédé de fabrication de produits semi-finis allongés à grain ultrafin WO2009064217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2007141899 2007-11-12
RU2007141899/02A RU2347633C1 (ru) 2007-11-12 2007-11-12 Способ получения ультрамелкозернистых полуфабрикатов волочением со сдвигом

Publications (1)

Publication Number Publication Date
WO2009064217A1 true WO2009064217A1 (fr) 2009-05-22

Family

ID=40529751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2008/000670 WO2009064217A1 (fr) 2007-11-12 2008-10-28 Procédé de fabrication de produits semi-finis allongés à grain ultrafin

Country Status (2)

Country Link
RU (1) RU2347633C1 (fr)
WO (1) WO2009064217A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966536A (zh) * 2010-09-22 2011-02-09 上海交通大学 扭转式往复挤压装置及其加工方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2467816C2 (ru) * 2011-02-28 2012-11-27 Михаил Витальевич Чукин Способ получения ультрамелкозернистых полуфабрикатов волочением с кручением
RU2498870C1 (ru) * 2012-07-06 2013-11-20 Открытое акционерное общество "Магнитогорский метизно-калибровочный завод "ММК-МЕТИЗ" Способ получения из высокоуглеродистой стали проволоки с наноструктурой
RU170774U1 (ru) * 2016-07-14 2017-05-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Магнитогорский государственный технический университет им. Г.И. Носова" (ФГБОУ ВО "МГТУ им. Г.И. Носова") Устройство для изготовления проволоки с ультрамелкозернистой структурой
RU178202U1 (ru) * 2017-11-28 2018-03-26 Владимир Галсанович Дампилон Устройство для волочения длинномерных изделий

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038592A (en) * 1958-10-07 1962-06-12 Canada Steel Co Wire drawing die
SU897354A1 (ru) * 1980-03-27 1982-01-15 Всесоюзный научно-исследовательский и проектный институт тугоплавких металлов и твердых сплавов Устройство дл волочени металла через две волоки
RU2252091C1 (ru) * 2004-03-15 2005-05-20 Государственное образовательное учреждение высшего профессионального образования "Уральский государственный технический университет-УПИ" Способ волочения заготовок круглого поперечного сечения

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038592A (en) * 1958-10-07 1962-06-12 Canada Steel Co Wire drawing die
SU897354A1 (ru) * 1980-03-27 1982-01-15 Всесоюзный научно-исследовательский и проектный институт тугоплавких металлов и твердых сплавов Устройство дл волочени металла через две волоки
RU2252091C1 (ru) * 2004-03-15 2005-05-20 Государственное образовательное учреждение высшего профессионального образования "Уральский государственный технический университет-УПИ" Способ волочения заготовок круглого поперечного сечения

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966536A (zh) * 2010-09-22 2011-02-09 上海交通大学 扭转式往复挤压装置及其加工方法
CN101966536B (zh) * 2010-09-22 2012-08-22 上海交通大学 扭转式往复挤压装置及其加工方法

Also Published As

Publication number Publication date
RU2347633C1 (ru) 2009-02-27

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