EP0338682A2 - Verfahren und Vorrichtung zur Verfestgung des métaux - Google Patents

Verfahren und Vorrichtung zur Verfestgung des métaux Download PDF

Info

Publication number
EP0338682A2
EP0338682A2 EP89302878A EP89302878A EP0338682A2 EP 0338682 A2 EP0338682 A2 EP 0338682A2 EP 89302878 A EP89302878 A EP 89302878A EP 89302878 A EP89302878 A EP 89302878A EP 0338682 A2 EP0338682 A2 EP 0338682A2
Authority
EP
European Patent Office
Prior art keywords
cast product
rolls
metal material
bending
material strengthening
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.)
Withdrawn
Application number
EP89302878A
Other languages
English (en)
French (fr)
Other versions
EP0338682A3 (de
Inventor
Atsumi Ohno
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.)
OCC Co Ltd
Original Assignee
OCC Co Ltd
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 OCC Co Ltd filed Critical OCC Co Ltd
Publication of EP0338682A2 publication Critical patent/EP0338682A2/de
Publication of EP0338682A3 publication Critical patent/EP0338682A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working

Definitions

  • the present invention relates to a metal material strengthening method for producing a tough metal material excellent in fatigue resistance, and relates to an apparatus therefor. More particularly, it relates to a metal material strengthening method for producing a metal material hardened by applying repeatedly bending deformation to a cast product having an unidirectionally solidified structure of crystals elongated in the direction of casting, and an apparatus for realizing this method.
  • metal has been used in the form of an alloy by addition of alloy elements to increase the strength of the metal.
  • the alloy has been hard­ened and strengthened by heat treatment such as quenching or by age hardening treatment so as to be used as a structural material.
  • a large quantity of low specific gravity Al alloy has been used as a structural material of an airplane which requires both lightness and strength.
  • pure Al metal is soft and has not sufficient strength for use as a structural material of an airplane. Therefore, an Al alloy is used after strengthened through a process in that a deposition-­hardening type alloy is prepared by addition of metals, such as Cu, Zn, Mg and the like, and the alloy is strengthened by the age-hardening treatment.
  • a conventional method which has been generally used as a casting method for producing a cast product comprises injecting a molten metal into a cooled mold to thereby cool the metal to thereby prepare a cast product.
  • the cast product prepared by the conventional method as shown in Fig.
  • a columnar crystal zone 2 in which crystals have grown side by side and perpendicularly to the surface of the cast product 1 is formed in the surface portions of the cast product 1, while an equi­axed crystal zone 3 is often formed in the inside of the cast product 1.
  • the cast product 4 prepared by this method has a unidirectionally solidified structure of columnar crystals longitudinally extending in the direction of casting.
  • Contin­uously cast products of metals such as Al, Cu, Ni and the like can be prepared by the method.
  • the first reason is in that the cast product has been considered to be unable to be produced as a structural materi­al in mass-production with a low cost while it can be produced as a material of a special function, because a very low solid­ifying rate is required for preparing the unidirectionally solidified cast product so as to extremely lower the produc­tivity thereof.
  • the present invention provides a metal material strength­ening method in which a continuously cast product having a unidirectionally solidified structure in which crystals are extended longitudinally in the direction of casting is passed through a bath drawing a zigzag locus to apply repeatedly bending deformation to the cast product to thereby strengthen the cast product.
  • the invention provides a metal material strengthening apparatus which comprises a plurality of a rotata­ble rolls arranged at intervals so that the cast product is fed zigzag while being in contact with circumferential sur­faces of the rolls so as to be repeatedly subject to bending deformation to thereby be hardened.
  • the method according to the invention is an epoch-making metal material strengthening method which can be applied to machines such as airplanes and cars in which destruction of the metal material caused by metal fatigue due to repeated stress affects people's life.
  • FIG. 1 An embodiment of the apparatus for realizing the metal material stengthening method in accordance with the present invention will be described hereunder.
  • Fig. 1 two feed pinch roll pairs 13 and 14 are arranged side by side in the entrance side of a strengthening apparatus 11.
  • a continuously cast product 12 having a unidirectionally solidi­fied structure is fed into the apparatus 11 by the feed pinch rolls 13 and 14 while the cast product 12 is nipped by the feed pinch rolls 13 and 14.
  • Each of the feed pinch roll pairs 13 and 14 is constituted by a pair or rolls separated verti­ cally in Fig. 1 so that the cast product 12 can be nipped therebetween.
  • the second pinch roll pair 14 is arranged at a distance from the first pinch roll pair 13 at the same level as the first pinch roll pair 13.
  • a first guide 15 and a first bending roll 16 are arranged in the exit side of the second pinch roll pair 14 at a suitable distance from the second pinch roll pair 14.
  • the first bending roll 16 and the first guide 15 are arranged so that the circumferential surface of the first bending roll 16 faces a guide surface 17 of the first guide 15 through the cast product 11.
  • the guide surface 17 of the first guide 15 is arranged so that the guide surface 17 horizontally receives the cast product 11 substantially horizontally fed out of the second pinch roll pair 14 and then guides the cast product 11 so as to make the cast product 11 go down along a circular arc traced by the circumferential surface of the first bending roll 16.
  • a second bending roll 18 and a second guide 19 are arranged in the exit side of the first guide 15 and the first bending roll 16.
  • the axis of the second bending roll 18 is located at a position higher than the axis of the first bending roll 16.
  • the second guide 19 has a guide surface shaped like a circular arc substantially equal to that of the circumferential surface of the second bending roll 18.
  • a third bending roll 22 and a third guide 23 are arranged in the exit side of the second bending roll 18 and the second guide 19.
  • the axis of the third bending roll 22 is located substan­tially in the same level as the axis of the first bending roll 16.
  • the third guide 23 is formed in the same manner as the second guide 19.
  • a fourth bending roll 24 and a fourth guide 25 are arranged in the exit side of the third bending roll 22 and the second guide 23.
  • the axis of the fourth bending roll 24 is located substantially in the same level as the axis of the second bending roll 18.
  • the fourth guide 24 is formed in the same manner as the second guide 19.
  • a fifth bending roll 26 and a fifth guide 27 are arranged in the exit side of the fourth bending roll 24 and the fourth guide 25.
  • a sixth bend­ing roll 28 and a fifth guide 29 are arranged in the exit side of the fifth bending roll 26 and the fifth guide 27.
  • the axis of the fifth bending roll 26 is located substantially in the same level as the axis of the first bending roll 16, whereas the axis of the sixth bending roll 28 is located substantially in the same level as the axis of the second bending roll 18.
  • the guide surfaces of the fifth and sixth guides 27 and 29 are respectively formed in the same manner as in the second guide 19.
  • a seventh bending roll 31 and a seventh guide 32 are arranged in the exit side of the sixth bending roll 28 and the sixth guide 29.
  • the axis of the sixth bending roll 28 is located substantially in the same level as the axis of the second bending roll 18.
  • the axis of the seventh bending roll 31 is located substantially in the same level as the axis of the first bending roll 16.
  • the seventh guide 32 has a guide surface 33 composed of a surface ascending along a circular arc traced by the circumferential surface of the seventh bend­ing roll 31, and another surface extending substantially hori­zontally to the exit thereof. Accordingly, the cast product 12 is substantially horizontally fed out of the seventh bend­ing roll 31 and the seventh guide 32.
  • These bending rolls (from the second bending roll to the seventh bending roll) 18, 22, 24, 26, 28, 31 are supported rotatably in the same manner as the first bending roll 16.
  • the bending rolls (from the first bending roll to the seventh bending roll) 16, 18, 22, 24, 26, 28 and 31 and the guides (from the first guide to the seventh guide) 15, 19, 23, 25, 27, 29 and 32 are respectively formed of metal.
  • the second, fourth and sixth bending rolls 18, 24 and 28 are located above the first, third, fifth and seven­th bending rolls, so that the path for feeding the cast pro­duct 12 is formed zigzag.
  • Two take-out pinch roll pairs 34 and 35 are arranged in the exit side of the seventh bending roll 31 and the seventh guide 32.
  • the take-out pinch roll pairs 34 and 35 are con­structed in the same manner as the feed pinch roll pairs 13 and 14.
  • the take-out pinch roll pairs 34 and 35 serve to take the fed cast product 12 out of the apparatus.
  • a cooler 36 such as a cooling water spray is arranged above each of the second, fourth and sixth bending rolls 18, 24 and 28. The cooler 36 serves to prevent the cast product 12 from softening due to recrystallization during repeated deformation.
  • the cast product 12 fed from the first and second feed pinch roll pairs 13 and 14 is passed successively by the bending rolls (from the first bending roll to the seventh bending roll) 16, 18, 22, 24, 26, 28 and 31, by which the cast product 12 is repeatedly bent and hardened. Then the cast product 12 thus hardened is continuously moved in the direction of the arrow by the first and second take-out pinch roll pairs 34 and 35 to thereby attain a final product.
  • the temperature of the cast product 12 rises. Therefore, in order to prevent the cast product from softening due to re­crystallization during repeated deformation, the cast product 12 is cooled by the coolers 36 at the respective positions of the second, fourth and sixth bending rolls 18, 24 and 28.
  • the stengthening apparatus applies bending deformation vertically to the cast product 12. If the cast product 12 taken out of the second take-out pinch roll pair 35 is rotated clockwise or counterclockwise by about 90° about its longitudinal axis and then is put in the first feed pinch roll pair 13 again so that bending is applied to the cast product 12 by the bending rolls (from the first bending roll to the seventh bending roll) 16, 18, 22, 24, 26, 28 and 31, repeated bending deformation can be applied to the cast pro­duct 12 both vertically and horizontally with respect to a section of the cast product.
  • Fig. 2 shows a second embodiment of the present inven­tion.
  • the apparatus 11 as shown in Fig. 1 is constructed so that bending is continuously unidirectionally applied to the cast product 12. Accordingly, when bending should be applied to the cast product 12 in various directions, it is necessary to rotate the cast product 12 by a predetermined angle about the longitudinal axial of the cast product 12 as described above for the purpose of applying bending to the cast product again by the bending rolls (the first bending roll to the seventh bending roll) 16, 18, 22, 24, 26, 28 and 31.
  • a strengthening apparatus 41 of the second embodiment shown in Fig. 2 is constructed so that bending can be applied to the cast product 12 in various directions.
  • the appara­tus 41 has first bending roll means 42 which are constructed to apply bending vertically to the cast product 12 in the same manner as in the bending rolls of the first embodiment, and second bending roll means 43 which are arranged in the exit side of the first bending roll means 42 and constructed to apply bending horizontally to the cast product 12 which has been subject to the bending in the vertical direction.
  • the first bending roll means 42 are constituted by four vertically bending rolls 44, 45, 46 and 47.
  • the axis of the first and third vertically bending rolls 44 and 46 are located below the axes of the second and fourth vertically bending rolls 45 and 47.
  • the second bending roll means 43 are constituted by four horizontally bending rolls 48, 49, 51 and 52.
  • the axes of these rolls are arranged perpendicularly to the axes of the vertically bending rolls 44, 45, 46 and 47. Also in the four horizontally bending rolls, the axis of the first and third horizontal bending rolls 48 and 51 are located in positions shifted horizontally relative to the axes of the second and fourth horizontal bending rolls 45 and 47.
  • a verti­cally zigzag path for the cast product 12 is formed by the first bending roll means 42 and, further, a horizontally zig­zag path is formed by the second bending roll means 43.
  • Roll shafts 53 of the bending rolls are provided with motors 54 for driving the rolls. Those motors 54 are controlled synchro­nously by a control means (not shown).
  • the cast product 12 fed from the first ver­tically bending roll 44 of the first bending roll means 42 is subjected to bending continuously vertically by the first bending roll means, is fed to the second bending roll means 43 from the first horizontally bonding roll 44 and is subjected to bending continuously horizontally by the second bending means 43.
  • the cast product 12 taken out of the fourth hori­zontal bending roll 52 has been subjected to bending both vertically and horizontally with respect to a section of the cast product 12. As a result of the bending deformation, a strengthened metal material can be obtained.
  • the feed pinch roll pairs, the take-out pinch roll pairs, the guides and the cool­er as shown in Fig. 1 are not shown in Fig. 2.
  • those parts can be provided easily in the same manner as in the first embodiment.
  • the feed pinch roll pairs and the take-out pinch roll pairs are driven by motors synchroniz­ed with the motors of the bending rolls.
  • the second embodiment has shown the case where each of the first and second bending roll means are constituted by four rolls, it is a matter of course that the number of rolls can be changed if necessary.
  • third and fourth bending roll means following the second bending roll means 43 may be added.
  • those bending roll means may be arranged so that the axes of the rolls of the third bending rolls means are inclined clockwise by an angle of 45° relative to the axes of the rolls of the second bending roll means 43, and, at the same time, the axes of the rolls of the fourth bending roll means are inclined counterclockwise by an angle of 45° relative to the axes of the rolls of the second bend­ing roll means 43, respectively.
  • continuous bending is applied to the cast product 12 in the four directions (vertically, horizontally, rightward obliquely and leftward obliquely) with respect to a section of the cast product 12, so that the cast product can be hardened due to competition of dislocation in the inside of the cast product.
  • the cast product 12 having hardness distributed uniformly over all the length can be taken out constantly.
  • the crystal structure of a cast product prepared by continuous casting with a heat mold has a unidirectionally solidified structure of crystals, not always restricted to single-crystals, extended in a casting direction, the cast product has no solidified grain boundary perpendicular to the casting direction which may be a source of growth of cracks due to bending deformation. Accordingly, a strengthened metal material can be obtained without occurrence of cracks by re­peatedly applying such bending deformation to the cast pro­duct.
  • All the conventional structural materials are prepared as alloys.
  • the conventional materials generally have a surface defect developed into a starting point of destruction due to bending stress or fatigue.
  • the conventional materials generally have solidified grain boundaries, second-­phase crystallized matters such as chemical compounds, and the like, in the surfaces of the materials.
  • the present invention can provide a metal material excellent in reliability, in which there is no solidified grain boundary and no second-­phase crystallized matter developed into a starting point of occurrence of lateral cracks in the inside of the material as well as there is no surface defect.
  • the method according to the present invention makes it a rule that the bending deformation working applied to the continuously cast product does not cause reduction in section of the material, it is to be understood that the in­vention is not limited to the rule and that the invention is applicable to the case where the bending deformation causes somewhat reduction in the section as long as the effect of the invention can be attained.
  • metal material strengthening method accord­ing to the present invention can be applied not only to mate­rials merely using Al, Cu and Ni but also to any metal materi­als such as Fe, Co, Mg and the like so long as they are capa­ble of being treated by solution casting and work hardening.
  • An Al-4.5%Cu alloy molten was cast by a continuous cast­ing method using a heat mold in accordance with the above-­mentioned Japanese Patent No. 1049146 to prepare a unidirec­tionally solidified cast product of linear single-crystals having a 6 mm diameter.
  • a linear cast product consisting of a polycrystal structure of the same Al alloy prepared by a general metal casting method was used as a comparative material.
  • the tensile strength of the linear single-crystal cast product was 19.4 kg/mm2, the Vickers hardness thereof was 64, and the repetition number up to complete breaking thereof, measured by a canti-lever type rotary bending fatigue test machine was 6 X 104 under a load of 6 kg/mm2.
  • the tensile strength of the comparative material was 20 kg/mm2, the Vickers hardness thereof was 60, and the repeti­ tion number up to breaking thereof was 3 X 104.
  • the linear single-crystal cast product and the comparative material were treated as follows by use of an apparatus having seven 12mm-diameter bending rolls arranged as shown in Fig. 1. While the cast product drawn out of the take-out pinch roll pairs was rotated by 90° about its longi­tudinal axis, the cast product was passed through the bending rolls from the feed pinch roll pairs again. Then, the cast product drawn out of the take-out pinch roll pairs was further rotated by 45° abut its longitudinal axis and then similar bending deformation was applied to the cast product. Lastly, the cast product was further rotated by 90° and then similar bending deformation was applied to the cast product. In short, repeated bending deformation test in the four directions (ver­tically, horizontally, rightward obliquely and leftward ob­liquely) was conducted on the cast product.
  • the repeated bending fatigue test was conducted on the hardened single-crystal cast product.
  • the repetition number up to breaking reached 1.8 X 106 under a load of 6 kg/mm2.
  • the hardened single-crystal product showed remarkable prolongation of fatigue life, com­pared with the comparative material.
  • the single-crystal material reached a limit of fatigue under a load of 5 kg/mm2.
  • the strength of an alloy which could not be used as a strength material or a structural material can be increased by the metal material strengthening method according to the present invention which comprises hardening an unidirectionally solid­ified cast product having no solidified grain boundary by repeated bending treatment, and that the unidirectionally solidified cast product having no solidified grain boundary weak against work can be formed easily from the alloy merely by changing the conventional casting method.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)
EP19890302878 1988-03-23 1989-03-22 Verfahren und Vorrichtung zur Verfestgung des métaux Withdrawn EP0338682A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP67264/88 1988-03-23
JP6726488A JPH01242762A (ja) 1988-03-23 1988-03-23 強靭な構造用金属材料の製造法

Publications (2)

Publication Number Publication Date
EP0338682A2 true EP0338682A2 (de) 1989-10-25
EP0338682A3 EP0338682A3 (de) 1991-09-18

Family

ID=13339925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890302878 Withdrawn EP0338682A3 (de) 1988-03-23 1989-03-22 Verfahren und Vorrichtung zur Verfestgung des métaux

Country Status (2)

Country Link
EP (1) EP0338682A3 (de)
JP (1) JPH01242762A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200992A1 (de) 2012-01-24 2013-07-25 Wacker Chemie Ag Dotierstoffarmes polykristallines Siliciumstück
DE102012202640A1 (de) 2012-02-21 2013-08-22 Wacker Chemie Ag Polykristallines Siliciumbruchstück und Verfahren zur Reinigung von polykristallinen Siliciumbruchstücken
DE102013223883A1 (de) 2013-11-22 2015-05-28 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
DE102014200058A1 (de) 2014-01-07 2015-07-09 Wacker Chemie Ag Vorrichtung zum Aufnehmen und Transport eines Siliciumstabs sowie Verfahren zur Herstellung von polykristallinem Silicium
DE102014201096A1 (de) 2014-01-22 2015-07-23 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
DE102014203814A1 (de) 2014-03-03 2015-09-03 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
DE102014219174A1 (de) 2014-09-23 2016-03-24 Wacker Chemie Ag Verrundeter Polysiliciumbruch und dessen Herstellung
DE102014222883A1 (de) 2014-11-10 2016-05-12 Wacker Chemie Ag Polykristallines Siliciumstabpaar und Verfahren zur Herstellung von polykristallinem Silicium
CN111515284A (zh) * 2020-04-30 2020-08-11 燕山大学 一种板材强变形装置及其工艺

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161153A (ja) * 2004-11-09 2006-06-22 Sumitomo Light Metal Ind Ltd 絞り成形性に優れたアルミニウム合金板材およびその製造方法
JP2006316332A (ja) * 2005-05-16 2006-11-24 Sumitomo Light Metal Ind Ltd 絞り成形性に優れたアルミニウム合金板材およびその製造方法
JP2007070672A (ja) * 2005-09-06 2007-03-22 Furukawa Sky Kk 疲労特性に優れたアルミニウム合金厚板の製造方法
JP5432439B2 (ja) * 2007-06-27 2014-03-05 株式会社神戸製鋼所 温間成形用アルミニウム合金板
US8956472B2 (en) 2008-11-07 2015-02-17 Alcoa Inc. Corrosion resistant aluminum alloys having high amounts of magnesium and methods of making the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE481133C (de) * 1923-07-22 1929-09-09 Siemens & Halske Akt Ges Verfahren zur Erhoehung der Festigkeit von Metallkoerpern, die aus wenigen grossen Kristallen bestehen
US3256725A (en) * 1956-08-06 1966-06-21 Keller Julius Stefan Stretching method and apparatus
US4665970A (en) * 1985-11-20 1987-05-19 O.C.C. Company Limited Method of producing a metallic member having a unidirectionally solidified structure
JPH0621163A (ja) * 1992-07-06 1994-01-28 Toshiba Corp ワイヤボンダ用超音波ホ−ン

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE481133C (de) * 1923-07-22 1929-09-09 Siemens & Halske Akt Ges Verfahren zur Erhoehung der Festigkeit von Metallkoerpern, die aus wenigen grossen Kristallen bestehen
US3256725A (en) * 1956-08-06 1966-06-21 Keller Julius Stefan Stretching method and apparatus
US4665970A (en) * 1985-11-20 1987-05-19 O.C.C. Company Limited Method of producing a metallic member having a unidirectionally solidified structure
JPH0621163A (ja) * 1992-07-06 1994-01-28 Toshiba Corp ワイヤボンダ用超音波ホ−ン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 142 (M-388)(1865), 18 June 1985; & JP - A - 6021163 (OO SHII SHII K.K.) 02.02.1985 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620411A1 (de) 2012-01-24 2013-07-31 Wacker Chemie AG Dotierstoffarmes polykristallines Siliciumstück
US9073756B2 (en) 2012-01-24 2015-07-07 Wacker Chemie Ag Low-dopant polycrystalline silicon chunk
DE102012200992A1 (de) 2012-01-24 2013-07-25 Wacker Chemie Ag Dotierstoffarmes polykristallines Siliciumstück
US9776876B2 (en) 2012-02-21 2017-10-03 Wacker Chemie Ag Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks
DE102012202640A1 (de) 2012-02-21 2013-08-22 Wacker Chemie Ag Polykristallines Siliciumbruchstück und Verfahren zur Reinigung von polykristallinen Siliciumbruchstücken
US9209009B2 (en) 2012-02-21 2015-12-08 Wacker Chemie Ag Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks
DE102013223883A1 (de) 2013-11-22 2015-05-28 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
DE102014200058A1 (de) 2014-01-07 2015-07-09 Wacker Chemie Ag Vorrichtung zum Aufnehmen und Transport eines Siliciumstabs sowie Verfahren zur Herstellung von polykristallinem Silicium
WO2015104126A1 (de) 2014-01-07 2015-07-16 Wacker Chemie Ag Vorrichtung zum aufnehmen und transport eines siliciumstabs sowie verfahren zur herstellung von polykristallinem silicium
DE102014201096A1 (de) 2014-01-22 2015-07-23 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
US10077192B2 (en) 2014-01-22 2018-09-18 Wacker Chemie Ag Method for producing polycrystalline silicon
DE102014203814A1 (de) 2014-03-03 2015-09-03 Wacker Chemie Ag Verfahren zur Herstellung von polykristallinem Silicium
US10202282B2 (en) 2014-03-03 2019-02-12 Wacker Chemie Ag Process for producing polycrystalline silicon
DE102014219174A1 (de) 2014-09-23 2016-03-24 Wacker Chemie Ag Verrundeter Polysiliciumbruch und dessen Herstellung
WO2016074939A1 (de) 2014-11-10 2016-05-19 Wacker Chemie Ag Polykristallines siliciumstabpaar und verfahren zur herstellung von polykristallinem silicium
DE102014222883A1 (de) 2014-11-10 2016-05-12 Wacker Chemie Ag Polykristallines Siliciumstabpaar und Verfahren zur Herstellung von polykristallinem Silicium
US10301181B2 (en) 2014-11-10 2019-05-28 Wacker Chemie Ag Method for deinstallation of rod pairs of polysilicon produced by the Siemens process
CN111515284A (zh) * 2020-04-30 2020-08-11 燕山大学 一种板材强变形装置及其工艺

Also Published As

Publication number Publication date
JPH01242762A (ja) 1989-09-27
EP0338682A3 (de) 1991-09-18

Similar Documents

Publication Publication Date Title
EP0338682A2 (de) Verfahren und Vorrichtung zur Verfestgung des métaux
KR102158397B1 (ko) 개선된 알루미늄 합금 및 이를 제조하는 방법
US4799975A (en) Method for producing beta type titanium alloy materials having excellent strength and elongation
RU2424869C2 (ru) Гомогенизация и термическая обработка отливаемого металла
US7503378B2 (en) Casting of non-ferrous metals
KR101129489B1 (ko) 비철 금속의 주조 방법
Ohmori et al. Precipitation of NbC and hot ductility of austenitic stainless steels
EP0460234B1 (de) Blech aus einer intermetallischen titan-aluminiumverbimdung und verfahren zu ihrer herstellung
US7125612B2 (en) Casting of non-ferrous metals
JP2798842B2 (ja) 高強度アルミニウム合金圧延板の製造方法
JP2980006B2 (ja) 連続鋳造方法
JPS62197247A (ja) 異方性が小さくかつ結晶粒が粗大化し難いオーステナイト系ステンレス鋼薄板帯の製造方法
US3315349A (en) Method of producing hot-formed copper-base products
JP2583718B2 (ja) 高強度耐食性アルミニウム基合金
MAEHARA et al. Stress relaxation during hot deformation of austenite
JPH05277656A (ja) Ｔｉ３ Ａｌ基金属間化合物を含む合金の薄板およびその製造方法
JPS6157385B2 (de)
tarke Jr et al. THE MICROSTRUCTURE A. ND PROPERTIES OF ALUMINUM-LITHIUM ALLOYS
JP2004052054A (ja) 鍛造用アルミニウム合金材料およびその連続鋳造方法
JPH0419298B2 (de)
JPH04176850A (ja) 超合金薄帯の製造方法
JPH05125499A (ja) 高強度高靭性アルミニウム基合金
Nilan et al. The Effects of Varying Composition and Build Direction on Direct Metal Deposition Fabricated Inconel 718
JPH02267247A (ja) 燐青銅材の連続製造方法
Othman Strip casting of advanced high strength steel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19910402