US20120198901A1 - Apparatus and method for drawing metal tube - Google Patents

Apparatus and method for drawing metal tube Download PDF

Info

Publication number
US20120198901A1
US20120198901A1 US13/389,600 US201013389600A US2012198901A1 US 20120198901 A1 US20120198901 A1 US 20120198901A1 US 201013389600 A US201013389600 A US 201013389600A US 2012198901 A1 US2012198901 A1 US 2012198901A1
Authority
US
United States
Prior art keywords
lubrication oil
tube
rod
ejecting opening
raw
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.)
Abandoned
Application number
US13/389,600
Other languages
English (en)
Inventor
Manabu Yamamoto
Isao Harigae
Yuji Sakai
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Assigned to SHOWA DENKO K.K. reassignment SHOWA DENKO K.K. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARIGAE, ISAO, SAKAI, YUJI, YAMAMOTO, MANABU
Publication of US20120198901A1 publication Critical patent/US20120198901A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21C9/00—Cooling, heating or lubricating drawing material
    • 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
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
    • B21C3/16—Mandrels; Mounting or adjusting same

Definitions

  • the present invention relates to an apparatus for drawing a metal tube capable of producing a dawn tube excellent in dimensional accuracy, which can be preferably used as an OPC photoconductive drum substrate for electro-photographic apparatus, such as, e.g., copying machines, laser beam printers, and facsimile apparatus, and also relates to a drawing method using the apparatus for drawing a metal tube.
  • the wording “rear/rearward” used with reference to a drawing apparatus and a drawing method denotes a direction toward a raw tube with respect to a drawn tube
  • front/frontward denotes a direction toward a drawn tube with respect to a raw tube.
  • a non-cut tube suitable for mass production has been widely used as an OPC photoconductive drum substrate for electro-photographic apparatus, such as, e.g., copying machines, laserbeam printers, or facsimile machines.
  • One of such non-cut tubes is a so-called ED tube obtained by drawing an aluminum extruded raw tube, which is suitable for mass production in that a plurality of product tubes can be manufactured by a single drawing process.
  • the production method is now getting an attention as a production method which complies with mass consumption accompanied by market expansion.
  • Such ED tube is produced by initially obtaining an aluminum extruded raw tube by extruding an aluminum billet, and then cutting the extruded raw tube into a predetermined length. Thereafter, the cut tube is subjected to one pass or two or more passes of drawing processing using a die and a plug to obtain an aluminum tube having a predetermined configuration (i.e., predetermined outer diameter, inner diameter, wall thickness), and further subjected to a cutting process, a chamfering process for chamfering an end portion, a washing process, and an inspection process for inspecting dimensions and appearance to thereby obtain an ED tube.
  • a predetermined configuration i.e., predetermined outer diameter, inner diameter, wall thickness
  • supplying lubrication oil onto an outer surface of a tube can be easily performed by previously applying lubrication oil on the outer surface or supplying lubrication oil so as to flow down on the outer surface during the drawing process.
  • supplying lubrication oil onto an inner surface of a tube especially in the case of an ED tube in which a raw tube is subjected to two or more passes of continuous drawing processes at a high speed, it was difficult to previously supply lubrication oil onto an inner surface of a tube. For this reason, there was no choice but to perform a drawing process in a state in which a plug with lubrication oil applied thereon is inserted in a tube.
  • lubrication oil may sometimes become insufficient during the drawing process, resulting in burning of the inner surface, which deteriorates the run-out accuracy of the drawn tube.
  • the present applicant has proposed a drawing apparatus capable of supplying lubrication oil onto an inner surface of a raw tube as needed in which an opening is formed in a peripheral wall of a hollow rod supporting a plug to discharge the lubrication oil supplied into the inner space of the hollow rod from the rear end portion thereof.
  • a drawing apparatus in order to evenly spread the lubrication oil adhering the inner surface of the tube of the plug, a core is attached to the rod (see Patent Documents 1 and 2).
  • the drawn tube is taken out from the apparatus while suspending the supply of lubrication oil, and then a subsequent extruded raw tube is set to the apparatus and supplying of lubrication oil is resumed at the time of initiating the subsequent drawing process.
  • suspending the supply of lubrication oil causes outflow of the lubrication oil accumulated in the rod through the opening.
  • the present invention aims to enhance the responsiveness of lubrication oil ejection in the case of discontinuously supplying lubrication oil in a drawing apparatus for a metal tube in which lubrication oil is ejected through an opening formed in a hollow rod supporting a plug to adhere the lubrication oil to an inner surface of a raw tube.
  • a drawing apparatus and a drawing method according to the present invention have the following structure [1] to [10].
  • a drawing apparatus for a metal tube for processing a metal raw tube bypassing a metal raw tube between a die for forming an outer surface and a plug for forming an inner surface characterized in that an ejecting opening for ejecting lubrication oil opens into an outer peripheral surface of a hollow rod supporting the plug, wherein the ejecting opening is provided only at a region above a center of the rod in an up-and-down direction.
  • the ejecting opening for lubrication oil is provided only within an upper region of the rod, even when supply of lubrication oil is suspended, the lubrication oil filled within a rod does not flow out through the election opening. Even if the lubrication oil flows out, the flow amount is insignificant.
  • the inside of the rod is in a state in which the inside is completely or almost filled with lubrication oil.
  • the nozzle since the nozzle is protruded from the outer peripheral surface of the rod, the ejection position of lubrication oil can be approached to the raw tube. Therefore, even in cases where an inner diameter of the raw tube is large with respect to an outer diameter of the rod, or the ejection amount of lubrication oil is relatively small, it becomes possible to adhere lubrication oil to a predetermined position. Furthermore, the nozzle functions as a dam at the time of resuming the supply of lubrication oil, which prevents an outflow of the lubrication oil from the ejecting opening provided at a position other than the apex of the rod.
  • lubrication oil can be sprayed forward than the position of the ejecting opening, and the distance from the sprayed position of lubrication oil to the bearing portion of the plug becomes short. This enables assured adhesion of lubrication oil at the upper region of the raw tube where lubrication oil tends to become insufficient at the bearing portion.
  • the amount of lubrication oil flowing out of the ejecting opening during the suspension of supplying lubrication oil is small, and therefore the response sensitivity at the time of resuming supply of lubrication oil is excellent.
  • FIG. 1 is a vertical cross-sectional view showing an example of a drawing apparatus for carrying out a drawing method for a metal tube according to the present invention.
  • FIG. 2 is a cross-sectional view of a raw tube and a rod in a drawing apparatus shown in FIG. 1 .
  • FIG. 3 is a cross-sectional view showing another embodiment of a rod of a drawing apparatus according to the present invention.
  • FIG. 4 is a cross-sectional view showing a still another embodiment of a rod of a drawing apparatus according to the present invention.
  • FIG. 5 is a cross-sectional view showing a still yet another embodiment of a rod of a drawing apparatus according to the present invention.
  • FIG. 6 is a cross-sectional view showing a still yet another embodiment of a rod of a drawing apparatus according to the present invention.
  • FIG. 7 is a cross-sectional view showing still yet another embodiment of a rod of a drawing apparatus according to the present invention.
  • FIG. 8 is a cross-sectional view showing a rod of Comparative Example 1 used in a drawing test.
  • FIG. 9 is a cross-sectional view showing a rod of Comparative Example 2 used in a drawing test.
  • FIG. 10 is a cross-sectional view of a rod of Comparative Example 3 used in a drawing test.
  • FIG. 1 shows an example of a drawing apparatus for carrying out a drawing method for a metal tube according to the present invention.
  • This drawing apparatus 1 is equipped with a drawing tool and a lubrication oil supplying portion for supplying lubrication oil onto an outer surface and an inner surface of a raw tube 2 .
  • the drawing apparatus includes a drawing die 10 and a plug 11 .
  • the drawing die 10 is provided with a die main body 13 fitted in a die case 12 .
  • the die main body 13 has an approach portion 14 formed around a center die hole and a bearing portion 15 continued from the approach portion.
  • the plug 11 is attached to a tip end of a rod 20 formed by a hollow tube and supported by the tube, and has an approach portion 16 and a bearing portion 17 continued from the approach portion 16 .
  • an outer surface of the tube is formed by the bearing portion 15 of the die main body 13 and an inner surface thereof is formed by the bearing portion 17 of the plug 11 .
  • a drawn tube 3 is produced.
  • a nozzle 18 is arranged above the raw tube and rearward of the drawing die 10 .
  • the lubrication oil L supplied from a tank (not illustrated) is ejected from the nozzle 18 toward the raw tube 2 , and the lubrication oil L adhered to the upper portion of the raw tube 2 travels on the outer surface of the raw tube to be supplied to the entire surface of the raw tube.
  • the excessive lubrication oil L runs down.
  • the raw tube 2 is introduced into the drawing tool with the lubrication oil L adhering to the outer surface of the raw tube.
  • a lubrication oil ejecting opening 21 is formed in the rod 20 .
  • the rod 20 is a hollow tube and is utilized as a supplying passage for lubrication oil L.
  • an ejecting opening 21 communicating with the supplying passage is formed.
  • a single ejecting opening 21 is formed at the apex (i.e., the highest position in the up-and-down direction) of the rod 20 so as to face straight upward.
  • the lubrication oil L introduced into the inner space of the rod 20 via the rear portion thereof from a tank (not illustrated) is sprayed onto the inner upper wall surface of the raw tube 2 to be adhered thereto, and then travels on the wall surface to be spread in the peripheral direction.
  • the raw tube 2 is drawn while supplying the lubrication oil L onto the inner surface of the raw tube 2
  • the raw tube 2 is introduced into the drawing tool with the lubrication oil L adhering to the entire inner surface of the raw tube. Continuously ejecting the lubrication oil L from the ejecting opening 21 during the drawing process enables adhesion of lubrication oil L by a required amount regardless of the length of the raw tube 2 .
  • the drawing process and the lubrication oil supply to the inner surface of the raw tube are performed by repeating the following steps:
  • lubrication oil L is continuously supplied, and therefore the inner side of the rod 20 is filled with lubrication oil L.
  • Step (ii) when the supply of lubrication oil L is suspended, the lubrication oil L in the rod 20 flows out until the liquid level goes down to the height of the ejecting opening 21 .
  • the lubrication oil L will not flow out.
  • Step (v) is a waiting time for waiting for the recovery of the discharged amount by compensating the discharged lubrication oil. As the discharged amount becomes smaller, the waiting time can be shortened and the lubrication oil ejection responsiveness improves. If drawing of the subsequent raw tube 2 is executed by omitting Step (v), lubrication oil shortage occurs at the drawing initiation portion of the raw tube.
  • the ejecting opening should be provided only at the region above the center of the rod in the up-and-down direction, and should not be provided at the region equal to or below the center of the rod.
  • the number and/or position of the ejecting opening is not limited as long as the ejecting opening is provided only at the region above the center of the rod in the up-and-down direction.
  • the present invention covers the cases in which a plurality of ejecting openings are formed so as to extend in the peripheral direction or in the drawing direction.
  • H denotes a horizontal plane passing through the center of each of the rods 20 , 22 , 24 , 25 , and 29 .
  • the region of the rod above the horizontal plane His a region in which an electing opening can be formed. If it is within this region, the number and position of the ejecting opening can be arbitrarily set.
  • the position of the ejecting opening in the circumference direction is defined by an angle ⁇ from the apex of the rod with respect to the center of the rod.
  • the condition of the angle ⁇ is 0 ⁇ 90° (degree), and if it is within this range, the angle can be arbitrarily set depending on the inner diameter of the raw tube, the spraying area from the ejecting opening, the ejection amount, etc.
  • FIG. 3 shows an example of a rod 22 in which two ejecting openings 23 and 23 are provided at positions downwardly apart from the apex in the circumference direction, or positions satisfying 0° ⁇ 90°.
  • the ejecting opening 23 it is preferable to provide the ejecting opening 23 so that the angle ⁇ falls within the range of 60° (including 60°), more preferably within the range below 40° (including 40°) because of the following reasons.
  • lubrication oil sprayed onto the inner surface of the raw tube 2 would not flow to a portion higher than the position to which the lubrication oil was sprayed. Therefore, in the case of spraying lubrication oil obliquely upward in the rod 22 shown in FIG. 3 , shortage of lubrication oil might occur at the portion of the raw tube immediately above the rod 22 or the vicinity thereof.
  • a nozzle 26 to the periphery of an ejecting opening 21 formed in a peripheral wall of the rod 25 so as to protrude from the outer peripheral surface of the rod 25 .
  • Providing the nozzle 26 results in a closer election position of the lubrication oil with respect to the raw tube 2 . Therefore, even in cases where the inner diameter of the raw tube 2 is large with respect to the diameter of the rod 25 and/or the ejection amount of lubrication oil is small, it becomes possible to assuredly adhere lubrication oil to a predetermined position.
  • the ejecting opening is provided at a position closer to the bearing portion of the plug in a drawing direction. Since the ejecting opening 21 is provided at the upper region of the rod 20 , lubrication oil L is sprayed to the upper region of the raw tube 2 to be adhered, and flows downward during which the raw tube 2 is moved from the position of the ejecting opening 21 to the position of the bearing portion 17 of the plug 11 .
  • the lubrication oil L except for the lubrication oil drawn together with the drawn tube 3 , is sequentially moved rearward of the raw tube 2 and downward, which easily causes occurrence of lubrication oil shortage at the upper region of the raw tube 2 .
  • the ejecting opening 21 By approaching the position of the ejecting opening 21 to the bearing portion 17 with respect to the flow of lubrication oil L to thereby shorten the distance from the position of spraying lubrication oil L to the bearing portion 17 , it becomes possible to assuredly adhere lubrication oil L to the upper region of the bearing portion 17 where shortage of lubrication oil L tends to occur and efficiently adhere lubrication oil L to the inner surface of the raw tube 2 . From this point of view, it is preferable to provide the ejecting opening 21 at a position within 20 cm (including 20 cm) from the bearing portion 17 , more preferably within 10 cm (including 10 cm) from the bearing portion 17 .
  • the present invention covers the case in which the ejecting opening is provided at a portion where the tip end portion of the rod 20 and the plug 11 are overlapped.
  • the spraying position can be approached to the bearing portion 17 by providing the ejecting opening 21 at the location near the bearing portion 17
  • the spraying position can be further approached to the bearing portion by ejecting lubrication oil toward the front side from the position where the ejecting opening is provided.
  • FIGS. 6 and 7 As a means for setting the ejection direction of lubrication oil, the structures shown in FIGS. 6 and 7 can be exemplified.
  • the rod 27 shown in FIG. 6 the peripheral wall is drilled obliquely so that the ejecting opening 28 faces toward the front side.
  • the nozzle 30 is attached to the ejecting opening 28 formed in the peripheral wall of the rod so as to face toward the front side.
  • Supply of lubrication oil to the outer surface of the raw tube can be performed by any well-known method, such as a method in which the aforementioned lubrication oil ejecting opening 18 is provided rearward of the drawing apparatus. It is not always required to supply lubrication oil while drawing the raw tube, and it can be accepted to previously apply lubrication oil on the entire outer surface of the raw tube before conducting the drawing process.
  • the present invention does not limit a length of a raw tube.
  • the lubrication of the inner surface of the raw tube can be secured even by applying lubrication oil to a plug before the drawing processing. Therefore, in the case of drawing a long tube, remarkable effects can be exerted.
  • the present invention is suitably used in the case of drawing a long raw tube. Specifically, when a raw tube is 2 m or longer, more preferably 2.5 m or longer, remarkable effects can be expected.
  • the drawing method of a metal tube according to the present invention is not limited by a type of metal, and can be widely applied to a method for drawing a raw tube of, e.g., aluminum, iron, copper or alloys thereof. Remarkable effects can be exerted when drawing a long raw tube, and therefore the drawing method of the present invention is suitable for manufacturing an aluminum tube for a photoconductive drum substrate.
  • the drawing method of the present invention is suitable for manufacturing an aluminum tube for a photoconductive drum substrate.
  • high quality aluminum tubes small in deflection can be manufactured efficiently.
  • Al—Mn series alloy, Al—Mg series alloy, Al—Mg—Si series alloy, and pure aluminum can be exemplified.
  • drawing tests were performed while changing positions of the ejecting openings for lubrication oil in the rod. Used in the tests were rods 20 , 22 , 24 , 25 , 29 , 40 , 42 and 45 shown FIGS. 2-5 , and 7 - 10 .
  • the approach angle of the approach portion 14 was 15°, and the bearing length of the bearing portion 15 was 15 mm.
  • the approach angle of the approach portion 16 of the plug 11 was 7°, and the bearing length of the bearing portion was 2 mm.
  • a nozzle 18 as a common lubrication oil supplying portion for supplying lubrication oil to an outer surface was arranged rearward of the drawing die 10 on the upper side of the raw tube.
  • lubrication oil L supplied to a tank (not illustrated) was ejected from the nozzle 18 to be supplied to the upper surface side of the raw tube 2 and then to the entire periphery of the raw tube 2 while being travelled on the outer surface of the raw tube.
  • Supply of lubrication oil onto the inner surface of the raw tube 2 was performed by ejecting lubrication oil L introduced into the inside of the rod from the rear end thereof from each ejecting opening to be sprayed onto the inner surface of the raw tube 2 .
  • Strol ES150 (viscosity: 1.4 ⁇ 10 ⁇ 4 m 2 /s) made by Kyoei Yuka Kabushiki Kaisha was used.
  • the position of the ejecting opening in the peripheral direction and the number of the ejecting openings were set as shown in Table 1.
  • the position of the ejecting opening in the peripheral direction is shown by an angle ⁇ from the apex of the rod with respect to the center of the rod.
  • the position of the ejecting opening in the longitudinal direction of the rod was 10 cm rearward of the bearing portion 17 of the plug 11 , which was common in each Example.
  • an ejecting opening 28 opening obliquely forward at the position of ⁇ 0°, and a nozzle 30 was attached to the peripheral edge of the ejecting opening 28 in a forwardly inclined manner.
  • a billet of aluminum alloy (consisting of Mn: 1.12 mass %, Si: 0.11 mass %, Fe: 0.39 mass %, Cu: 0.16 mass %, Zn: 0.01 mass %, Mg: 0.02 mass %, and the balance being aluminum and inevitable impurities) was extruded under the conditions of extrusion temperature: 520° C., and extrusion rate: 5 m/min into a cylindrical tube having an outer diameter of 32 mm and a wall thickness of 1.5 mm. Then, the extruded tube was cut into 2.2 m in length and used as a test raw tube 2 .
  • Drawing processing was performed at the drawing rate: m/min, the outer diameter reduction rate: 16% and the cross-sectional area reduction rate: 32% while supplying lubrication oil onto the outer and inner surfaces of the raw tube 2 .
  • a plurality of raw tubes were sequentially processed.
  • sequentially drawing a plurality of raw tubes after completion of drawing a single raw tube, supplying lubrication oil to the inner and outer surfaces of the raw tube was immediately suspended, the drawn tube was taken out from the drawing apparatus and the subsequent raw tube was set to the drawing apparatus. Immediately thereafter, subsequent drawing and lubrication oil supply were initiated. In other words, in the sequential drawing process for a plurality of raw tubes, the processing suspended time was minimized.
  • the drawn tube 3 processed in each Example was transferred to a transferring conveyer from the drawing apparatus 1 and cooled down to a room temperature, and cut into a length of 260 mm.
  • burning of the inner surface was evaluated by the following criteria through visual inspection. The evaluation results are shown in Table 1.
  • lubrication oil can be assuredly and effectively applied to an inner surface of a raw tube, and therefore the method is suited for mass production of aluminum tubes for photoconductive drum substrates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
US13/389,600 2009-08-18 2010-08-17 Apparatus and method for drawing metal tube Abandoned US20120198901A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009188827A JP5280971B2 (ja) 2009-08-18 2009-08-18 金属管の引抜装置および引抜方法
JP2009-188827 2009-08-18
PCT/JP2010/063854 WO2011021621A1 (ja) 2009-08-18 2010-08-17 金属管の引抜装置および引抜方法

Publications (1)

Publication Number Publication Date
US20120198901A1 true US20120198901A1 (en) 2012-08-09

Family

ID=43607072

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/389,600 Abandoned US20120198901A1 (en) 2009-08-18 2010-08-17 Apparatus and method for drawing metal tube

Country Status (4)

Country Link
US (1) US20120198901A1 (enExample)
JP (1) JP5280971B2 (enExample)
CN (1) CN102470415B (enExample)
WO (1) WO2011021621A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180021826A1 (en) * 2016-07-22 2018-01-25 Sms Group Gmbh Preparing a tube end for rod drawing

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5749605B2 (ja) * 2011-08-26 2015-07-15 昭和電工株式会社 金属管の引抜方法及び引抜装置
JP5781399B2 (ja) * 2011-08-30 2015-09-24 昭和電工株式会社 金属管の引抜装置及び引抜方法
US9339606B2 (en) 2014-05-15 2016-05-17 West Pharmaceutical Services, Inc. Foldable finger flange for a syringe
US10064997B2 (en) 2014-10-09 2018-09-04 West Pharmaceutical Services, Inc. Rotatable finger flange for a syringe
CN107504354B (zh) * 2015-09-12 2019-06-04 太仓升达机械有限公司 一种管材拉拔内腔加油装置的工作方法
CN105127223A (zh) * 2015-10-10 2015-12-09 安陆火凤凰铝材有限责任公司 一种铝管拉拔油润滑装置
CN109433840B (zh) * 2018-12-10 2023-09-12 江苏宏宝优特管业制造有限公司 拉拔机内外管壁润滑机构及润滑方法
US11134760B2 (en) * 2019-06-27 2021-10-05 Titan Company Limited System and method for manufacturing hollow tubular jewellery
CN113458166B (zh) * 2021-06-30 2023-04-21 北京科技大学 一种带螺旋肋包壳管的冷拔成形装置及成形方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1374369A (en) * 1919-03-29 1921-04-12 Luther D Earl Tool for piercing billets
US2173099A (en) * 1937-01-28 1939-09-19 Vascoloy Ramet Corp Means and method of tube drawing
JPS508117A (enExample) * 1973-05-25 1975-01-28

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089950U (enExample) * 1973-12-22 1975-07-30
JPH0716642A (ja) * 1993-07-06 1995-01-20 Nippon Steel Corp ステンレス鋼管の経済的冷牽方法
CN1406681A (zh) * 2001-08-30 2003-04-02 隆昌山川精密焊管有限责任公司 轿、微车磁电机外壳用电焊冷拔精密管
CN100366355C (zh) * 2006-01-23 2008-02-06 太原科技大学 液压柔性冷拔管的方法及其设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1374369A (en) * 1919-03-29 1921-04-12 Luther D Earl Tool for piercing billets
US2173099A (en) * 1937-01-28 1939-09-19 Vascoloy Ramet Corp Means and method of tube drawing
JPS508117A (enExample) * 1973-05-25 1975-01-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180021826A1 (en) * 2016-07-22 2018-01-25 Sms Group Gmbh Preparing a tube end for rod drawing
US10639690B2 (en) * 2016-07-22 2020-05-05 Sms Group Gmbh Preparing a tube end for rod drawing

Also Published As

Publication number Publication date
JP2011036904A (ja) 2011-02-24
CN102470415B (zh) 2014-12-10
WO2011021621A1 (ja) 2011-02-24
JP5280971B2 (ja) 2013-09-04
CN102470415A (zh) 2012-05-23

Similar Documents

Publication Publication Date Title
US20120198901A1 (en) Apparatus and method for drawing metal tube
US9885995B2 (en) Aluminum alloy and process for producing aluminum alloy extrusions
CN101513699B (zh) 一种铝合金焊丝表面刮削方法与设备
EP2374550B1 (en) Upper-side formed glass for hot boring and process for producing billet for tube formation by hot extrusion
JP5426701B2 (ja) 金属管の引抜装置および引抜方法
CN110153189B (zh) 一种利用钢管连轧管机组并行生产锆合金无缝管的方法
US20130192326A1 (en) Method for drawing metallic tube
US20150174631A1 (en) Device and method for drawing metal tube
JP5661494B2 (ja) 金属管の引抜方法及び引抜装置
JP5154851B2 (ja) 金属管の引抜装置および引抜方法
US20120315398A1 (en) Method and system for manufacturing metal-plated steel pipe
CN100446882C (zh) 表面品质优异的铝管及其制造方法和装置以及感光鼓基体
JP5149545B2 (ja) アルミニウム管の製造方法
JP2005099774A (ja) 表面品質に優れたアルミニウム管及びその製造方法と製造装置並びに感光ドラム基体
JP5661495B2 (ja) 金属管の引抜方法及び引抜装置
JP5819145B2 (ja) 金属管の引抜方法及び引抜装置
US9908176B2 (en) Continuous casting nozzle assembly for casting of a metallic pipe
JP5819146B2 (ja) 金属管の引抜方法及び引抜装置
CN115647041A (zh) 一种电子产品中板轧制用的冷轧机
CN107188394B (zh) 玻璃出料管拉拔模组、玻璃出料管制造方法及玻璃出料管
JP5749605B2 (ja) 金属管の引抜方法及び引抜装置
RU2647393C1 (ru) Способ винтовой прошивки и устройство для его осуществления
JPH05261427A (ja) 熱間押出し製管方法
JPH0783596A (ja) 熱交換器用亜鉛被覆押出形材及びその製造方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: SHOWA DENKO K.K., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMAMOTO, MANABU;HARIGAE, ISAO;SAKAI, YUJI;SIGNING DATES FROM 20120326 TO 20120410;REEL/FRAME:028079/0174

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION