CN111922105A - Pipe drawing die and drawing process - Google Patents
Pipe drawing die and drawing process Download PDFInfo
- Publication number
- CN111922105A CN111922105A CN202010483391.2A CN202010483391A CN111922105A CN 111922105 A CN111922105 A CN 111922105A CN 202010483391 A CN202010483391 A CN 202010483391A CN 111922105 A CN111922105 A CN 111922105A
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- China
- Prior art keywords
- pipe
- belt
- die
- diameter
- core
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Classifications
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- 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
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
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- 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
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, 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 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
- B21C3/16—Mandrels; Mounting or adjusting same
Abstract
The invention discloses a pipe drawing die and a drawing process, wherein the drawing process adopts the pipe drawing die, and the pipe drawing die comprises: the drawing channel is provided with a feed inlet and a discharge outlet, and the drawing channel is sequentially provided with a deviation correcting belt, a thickening belt and a sizing belt which can enable the outer diameter of the pipe to be gradually reduced from the feed inlet to the discharge outlet; the die core is inserted into the drawing channel, a gap for the pipe side wall to pass through is formed between the outer side wall of the die core and the side wall of the drawing channel, and the radial size of the die core corresponding to the sizing belt is larger than the radial size of the die core corresponding to the deviation correcting belt and the thickening belt. The pipe is in a free-pulling state when passing through the deviation correcting belt and the thickening belt, the outer diameter of the pipe can be reduced, the wall thickness of the pipe can be increased, the pipe can be corrected due to the fact that the wall thickness of the pipe is thin when the pipe enters the deviation correcting belt, coaxiality of the pipe can be corrected, the pipe can be prevented from generating large fluctuation in size in the process of passing through the sizing belt, and the CPK value can be improved.
Description
Technical Field
The invention relates to the field of pipe drawing, in particular to a pipe drawing die and a drawing process.
Background
The size precision requirement of the aluminum base tube for the photosensitive drum is high, the tolerance zone of the inner diameter and the outer diameter is not more than 0.05mm, the coaxiality requirement is not more than 0.05mm, the extruded tube is generally required to be subjected to drawing processing, and meanwhile, the drawing deformation is required to be ensured to be more than 45%, so that a product meeting the requirement can be obtained. The conventional drawing process generally adopts two times of internal and external drawing, the first time of drawing is rough drawing, the second time of drawing is fine drawing, the drawing principle of the two times of drawing is the same, and the product precision is improved by the internal and external drawing deformation process.
However, the conventional drawing process has the following problems: 1. the correction effect of the internal and external drawing on the coaxiality of the pipe is limited, so that the coaxiality of the pipe is basically ensured by an extrusion forming process, and the difficulty of the extrusion forming process of the pipe is increased; 2. in the process of internal and external drawing, the reduction of the radial size of the pipe is small, the reduction of the wall thickness of the pipe is large, the size fluctuation of the drawn pipe is large, the CPK value (process capability index) is small, and the high quality requirement cannot be met.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pipe drawing die which can reduce the coaxiality and improve the dimensional accuracy of a product.
The invention also provides a drawing process adopting the pipe drawing die.
The pipe drawing die according to an embodiment of the first aspect of the present invention includes: the pipe drawing device comprises a die main body, wherein a drawing channel penetrating through the die main body is arranged on the die main body, the drawing channel is provided with a feeding hole and a discharging hole, and a deviation correcting belt, a thickening belt and a sizing belt which can enable the outer diameter of a pipe to be gradually reduced are sequentially arranged on the drawing channel from the feeding hole to the discharging hole; the die core is inserted into the drawing channel, a gap for the pipe side wall to pass through is formed between the outer side wall of the die core and the side wall of the drawing channel, and the radial size of the die core corresponding to the calibrating strap is larger than the radial size of the die core corresponding to the rectifying strap and the thickening strap.
The pipe drawing die provided by the embodiment of the invention at least has the following beneficial effects: through the structure, the pipe is only contacted with the die main body when passing through the deviation correcting belt and the thickening belt and is in an idle pulling state, the outer diameter of the pipe can be reduced, the wall thickness of the pipe can be increased, the wall thickness of the pipe is thinner when the pipe enters the deviation correcting belt, the pipe can be corrected, the coaxiality of the pipe can be corrected, the difficulty of the pipe extrusion forming process is favorably reduced, the pipe simultaneously contacts the die main body and the die core when entering the sizing belt to perform internal and external pulling on the pipe, the outer diameter is reduced and the wall thickness is increased through twice idle pulling before the pipe enters the sizing belt, the size fluctuation after pulling is favorably avoided being larger due to smaller radial size reduction and larger wall thickness reduction in the internal and external pulling processes, the CPK value is favorably improved, and the higher quality requirement is met.
According to some embodiments of the invention, the deviation correcting belt comprises a first diameter reducing area and a first diameter fixing area which are sequentially arranged along the direction from the feeding hole to the discharging hole, the outer diameter of the pipe is reduced and the wall thickness of the pipe is increased through the first diameter reducing area, and the pipe is fixed through the first diameter fixing area.
According to some embodiments of the invention, the thickening belt comprises a second diameter reducing area and a second diameter fixing area which are sequentially arranged along the direction from the feeding hole to the discharging hole, the inner diameter of the second diameter fixing area is smaller than that of the first diameter fixing area, the outer diameter of the pipe is reduced through the second diameter reducing area, the wall thickness of the pipe is increased, and the pipe is fixed through the second diameter fixing area.
According to some embodiments of the invention, the bearing comprises a third diameter reducing area and a third diameter fixing area which are sequentially arranged along the direction from the feeding hole to the discharging hole, the inner diameter of the third diameter fixing area is smaller than that of the second diameter fixing area, the outer diameter and the wall thickness of the pipe are reduced through the third diameter reducing area, and the outer diameter and the wall thickness of the pipe are determined through the third diameter fixing area.
According to some embodiments of the invention, the mold core is provided with oil spray holes for spraying lubricating oil, oil spray ends of the oil spray holes are positioned on the outer side wall of the mold core, and lubricating oil is sprayed to the inner side wall of the pipe through the oil spray holes, so that the friction force between the pipe and the mold core in the drawing process can be reduced, the friction heat is reduced, and the smoothness of the inner side wall of the pipe is improved.
According to some embodiments of the invention, the discharge port is of a flaring structure, so that the sized pipe is avoided, the sized pipe can be prevented from being deformed and even scratched, and the quality of the product is improved.
According to some embodiments of the invention, one end of the mold core, which corresponds to the discharge hole, is in a round table shape, so that the sized pipe is avoided, the sized pipe can be prevented from being deformed and even scratched, and the product quality is improved.
According to some embodiments of the invention, a raised annular step is arranged on the die core corresponding to the bearing zone, so that the radial dimension of the die core corresponding to the bearing zone is larger than the radial dimensions of the die core corresponding to the deviation rectifying zone and the thickening zone.
According to the drawing process of the second aspect of the present invention, the pipe drawing die of the first aspect of the present invention includes the following steps: s1, first empty pulling: sleeving a pipe on the mold core at the feed inlet, enabling the pipe to pass through the deviation correcting belt, and ensuring that the pipe only contacts with the mold main body when passing through the deviation correcting belt; s2, second air-drawing: passing a pipe through the thickening belt and ensuring that the pipe only contacts the mould body when passing through the thickening belt; s3, internal and external drawing: and enabling the pipe to penetrate through the bearing, and ensuring that the pipe simultaneously contacts the die main body and the die core when penetrating through the bearing.
The drawing process provided by the embodiment of the invention has at least the following beneficial effects: the pipe only contacts with the die main body when passing through the deviation correcting belt and the thickening belt, is in an idle-drawing state, can reduce the outer diameter and increase the wall thickness of the pipe, and has a thinner wall thickness when entering the deviation correcting belt, so that the pipe can be corrected, the coaxiality of the pipe can be corrected, the difficulty of the pipe extrusion forming process can be reduced, the pipe simultaneously contacts with the die main body and the die core when entering the sizing belt, the pipe can be drawn inside and outside, the outer diameter and the wall thickness are reduced by twice idle-drawing before entering the sizing belt, the size fluctuation after drawing is larger due to smaller radial size reduction and larger wall thickness reduction in the process of drawing inside and outside the pipe is avoided, and the CPK value is improved to meet higher quality requirements.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic cross-sectional view of a mold body and a mold core according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of a die body according to an embodiment of the invention;
fig. 3 is a schematic cross-sectional view of a mold core according to an embodiment of the invention.
Reference numerals:
the die comprises a die main body 10, a drawing channel 20, a feed inlet 21, a discharge outlet 22, a deviation correcting belt 23, a first reducing area 231, a first sizing area 232, a thickening belt 24, a second reducing area 241, a second sizing area 242, a sizing belt 25, a third reducing area 251, a third sizing area 252, a die core 30, an oil spray hole 31 and an annular step position 32.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, if several, more than, less than, more than, above, below, or within words appear, several means are one or more, several means are two or more, more than, less than, more than, etc. are understood as not including the number, and more than, less than, within, etc. are understood as including the number.
In the description of the present invention, if the first, second, etc. terms appear, they are only used for distinguishing technical features, but are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, a tube drawing die according to an embodiment of the present invention includes a die body 10 and a die core 30.
The drawing channel 20 penetrating through the die body 10 is arranged on the die body 10, the drawing channel 20 is provided with a feed inlet 21 and a discharge outlet 22, the drawing channel 20 is sequentially provided with a deviation correcting belt 23, a thickening belt 24 and a sizing belt 25 which can enable the outer diameter of a pipe to be gradually reduced from the feed inlet 21 to the discharge outlet 22, the die core 30 is inserted into the drawing channel 20, a gap for the pipe side wall to pass through is formed between the outer side wall of the die core 30 and the side wall of the drawing channel 20, and the radial size of the position, corresponding to the sizing belt 25, of the die core 30 is larger than the radial size of the position, corresponding to the deviation.
Through the structure, make tubular product only contact with mould main part 10 when passing through rectifying area 23 and bodiness area 24, be in the idle state of drawing, can make the external diameter of tubular product reduce, the wall thickness increase, and the wall thickness is thinner when tubular product gets into rectifying area 23, consequently, can rectify the tubular product, with the axiality of rectifying tubular product, be favorable to reducing the degree of difficulty of tubular product extrusion forming technology, tubular product contacts mould main part 10 and mold core 30 simultaneously when getting into calibrating area 25, with draw inside and outside the tubular product, because tubular product has reduced the external diameter and has increased the wall thickness through twice idle drawing before getting into calibrating area 25, be favorable to avoiding tubular product drawing inside and outside the in-process because of radial dimension's reduction is less, the reduction of wall thickness is great and leads to the size after drawing to fluctuate greatly, be favorable to improving the CPK value, in order to satisfy higher requirement for quality.
Referring to fig. 1 and 2, in some embodiments, the deviation rectifying band 23 includes a first diameter reducing area 231 and a first diameter calibrating area 232 which are sequentially arranged along the direction from the feeding port 21 to the discharging port 22, the outer diameter of the pipe is reduced and the wall thickness of the pipe is increased through the first diameter reducing area 231, and the pipe is calibrated through the first diameter calibrating area 232.
Referring to fig. 1 and 2, in some embodiments, the thickening belt 24 includes a second diameter reducing zone 241 and a second diameter fixing zone 242 arranged in sequence from the feed opening 21 to the discharge opening 22, the inner diameter of the second diameter fixing zone 242 is smaller than that of the first diameter fixing zone 232, the outer diameter of the pipe is reduced and the wall thickness of the pipe is increased through the second diameter reducing zone 241, and the pipe is fixed through the second diameter fixing zone 242.
Referring to fig. 1 and 2, in some embodiments, the bearing 25 comprises a third diameter reducing zone 251 and a third diameter measuring zone 252 which are sequentially arranged along the direction from the feeding hole 21 to the discharging hole 22, the inner diameter of the third diameter measuring zone 252 is smaller than that of the second diameter measuring zone 242, the outer diameter and the wall thickness of the pipe are reduced through the third diameter reducing zone 251, and the outer diameter and the wall thickness of the pipe are determined through the third diameter measuring zone 252.
Referring to fig. 1 and 3, in some embodiments, oil spray holes 31 for spraying lubricating oil are formed in the mold core 30, oil spray ends of the oil spray holes 31 are located on the outer side wall of the mold core 30, and the lubricating oil is sprayed to the inner side wall of the pipe through the oil spray holes 31, so that the friction force between the pipe and the mold core 30 in the drawing process can be reduced, the friction heat is reduced, and the smoothness of the inner side wall of the pipe is improved. Preferably, the oil injection end of the oil injection hole 31 is arranged at the position of the mold core 30 corresponding to the deviation correcting belt 23 or the thickening belt 24.
Referring to fig. 1 and 2, in some embodiments, the discharge port 22 is in a flaring structure, so as to avoid the sized pipe, thereby avoiding the sized pipe from deforming or even scratching, and facilitating the improvement of product quality.
Referring to fig. 1 and 3, in some embodiments, one end of the mold core 30 corresponding to the discharge hole 22 is in a truncated cone shape, so that the sized pipe is avoided, the sized pipe can be prevented from being deformed and even scratched, and the product quality is improved.
Referring to fig. 1 and 3, in some embodiments, the mold core 30 is provided with a raised annular step 32 corresponding to the bearing 25, so that the radial dimension of the mold core 30 corresponding to the bearing 25 is larger than the radial dimensions of the mold core 30 corresponding to the correction bands 23 and the thickening bands 24.
It should be noted that, in some embodiments, the radial dimension of the mold core may also increase from the feeding hole to the discharging hole, so that the radial dimension of the mold core corresponding to the bearing zone is larger than the radial dimension of the mold core corresponding to the correction zone and the thickening zone, which is not limited herein.
It should be noted that the first diameter fixing zone 232, the second diameter fixing zone 242 and the third diameter fixing zone 252 are zones with unchanged inner diameter in the drawing channel 20, that is, the inner diameters of the drawing channel 20 in the first diameter fixing zone 232, the second diameter fixing zone 242 and the third diameter fixing zone 252 are all fixed values, the first diameter changing zone 231, the second diameter changing zone 241 and the third diameter changing zone 251 are zones with gradually decreased inner diameters in the drawing channel 20, that is, the inner diameters of the drawing channel 20 in the first diameter changing zone 231, the second diameter changing zone 241 and the third diameter changing zone 251 are all gradually decreased along the direction from the feed opening 21 to the discharge opening 22.
According to the drawing process provided by the embodiment of the invention, the pipe drawing die comprises the following steps: s1, first empty pulling: sleeving the pipe on the mold core 30 at the feed inlet 21, enabling the pipe to pass through the deviation correcting belt 23, and ensuring that the pipe is only contacted with the mold main body 10 when passing through the deviation correcting belt 23; s2, second air-drawing: the pipe passes through the thickening belt 24 and is only contacted with the mould main body 10 when passing through the thickening belt 24; s3, internal and external drawing: the tube is passed through the bearing 25 and is guaranteed to contact both the mould body 10 and the mould core 30 as it passes through the bearing 25.
The pipe is only contacted with the die main body 10 when passing through the deviation correcting belt 23 and the thickening belt 24, and is in an idle pulling state, the outer diameter of the pipe can be reduced, the wall thickness is increased, and the wall thickness is thinner when the pipe enters the deviation correcting belt 23, so that the pipe can be corrected, the coaxiality of the pipe can be corrected, the difficulty of the pipe extrusion forming process can be favorably reduced, the pipe simultaneously contacts the die main body 10 and the die core 30 when entering the sizing belt 25, so that the pipe can be drawn inside and outside, because the outer diameter is reduced and the wall thickness is increased through twice idle pulling before the pipe enters the sizing belt 25, the size fluctuation after drawing is larger due to smaller radial size reduction and larger wall thickness reduction in the process of drawing inside and outside the pipe is favorably avoided, the CPK value is favorably improved, and the higher quality requirement is met.
In the description of the present specification, if reference is made to the description of "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", and "some examples", etc., reference is made to the terminology, it is intended that a particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A pipe drawing die, comprising:
the pipe drawing device comprises a die main body (10), wherein a drawing channel (20) penetrating through the die main body (10) is arranged on the die main body (10), the drawing channel (20) is provided with a feeding hole (21) and a discharging hole (22), and a deviation rectifying belt (23), a thickening belt (24) and a sizing belt (25) which can enable the outer diameter of a pipe to be gradually reduced are sequentially arranged on the drawing channel (20) from the feeding hole (21) to the discharging hole (22);
the pipe drawing device comprises a mold core (30), wherein the mold core (30) is inserted into the drawing channel (20), a gap for a pipe side wall to pass through is formed between the outer side wall of the mold core (30) and the side wall of the drawing channel (20), the radial size of the position, corresponding to the sizing belt (25), of the mold core (30) is larger than the radial size of the position, corresponding to the correcting belt (23) and the thickening belt (24), of the mold core (30).
2. The tube drawing die of claim 1, wherein the deviation rectifying belt (23) comprises a first diameter reducing area (231) and a first diameter fixing area (232) which are sequentially arranged along the direction from the feed opening (21) to the discharge opening (22).
3. The tube drawing die of claim 2, wherein the thickening belt (24) comprises a second diameter reducing zone (241) and a second diameter fixing zone (242) which are sequentially arranged in the direction from the feed opening (21) to the discharge opening (22), and the inner diameter of the second diameter fixing zone (242) is smaller than that of the first diameter fixing zone (232).
4. The tube drawing die as claimed in claim 3, characterized in that the bearing (25) comprises a third diameter reduction zone (251) and a third diameter reduction zone (252) arranged in sequence in the direction from the feed opening (21) to the discharge opening (22), and the inner diameter of the third diameter reduction zone (252) is smaller than the inner diameter of the second diameter reduction zone (242).
5. The pipe drawing die of claim 1, wherein the die core (30) is provided with oil spray holes (31) for spraying lubricating oil, and oil spray ends of the oil spray holes (31) are located on an outer side wall of the die core (30).
6. The tube drawing die of claim 1, wherein the discharge orifice (22) is of a flared configuration.
7. The tube drawing die of claim 1, wherein an end of the die core (30) corresponding to the discharge port (22) is frustoconical.
8. The tube drawing die according to claim 1, characterised in that the die core (30) is provided with a raised annular step (32) in correspondence of the bearing (25).
9. A drawing process, characterized by using the tube drawing die according to any one of claims 1 to 8, comprising the following steps:
s1, first empty pulling: sleeving a pipe on the mold core (30) at the feed inlet (21), enabling the pipe to pass through the deviation correcting belt (23), and ensuring that the pipe is only contacted with the mold main body (10) when passing through the deviation correcting belt (23);
s2, second air-drawing: passing a pipe through the thickening belt (24) and ensuring that the pipe passes through the thickening belt (24) only in contact with the mould body (10);
s3, internal and external drawing: passing a tube through the bearing (25) and ensuring that the tube contacts both the mould body (10) and the mould core (30) as it passes through the bearing (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483391.2A CN111922105A (en) | 2020-06-01 | 2020-06-01 | Pipe drawing die and drawing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483391.2A CN111922105A (en) | 2020-06-01 | 2020-06-01 | Pipe drawing die and drawing process |
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| Publication Number | Publication Date |
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| CN111922105A true CN111922105A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010483391.2A Pending CN111922105A (en) | 2020-06-01 | 2020-06-01 | Pipe drawing die and drawing process |
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| CN (1) | CN111922105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474848A (en) * | 2020-11-19 | 2021-03-12 | 浙江义腾特种钢管有限公司 | Seamless thin-walled tube drawing die for integrated circuit |
| CN113172106A (en) * | 2021-05-12 | 2021-07-27 | 天津冶金集团天材科技发展有限公司 | Die-overlapping drawing process of nickel-based superalloy small-diameter thin-wall seamless tube |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB458737A (en) * | 1935-07-10 | 1936-12-24 | Fagersta Bruks Ab | Improvements in or relating to tube drawing mandrels with wearing surfaces of hard metal |
| DE1817515U (en) * | 1960-06-21 | 1960-09-01 | Ver Leichtmetallwerke Gmbh | DEVICE FOR DRAWING METAL PIPES, IN PARTICULAR SUCH MADE OF LIGHT METAL. |
| GB1006973A (en) * | 1961-06-30 | 1965-10-06 | Avesta Jernverks Ab | Cold drawing equipment for metal pipes |
| DE1250394B (en) * | 1967-09-21 | Hoesch Aktiengesellschaft Dort mund | Method and device for producing a lubricating film on the outer and inner walls of hollow profiles, in particular tubes made of metal, during cold drawing | |
| DE2114510A1 (en) * | 1971-03-25 | 1972-10-05 | Inst Metallurgii Zeleza Imeni | Tube drawing with plug - with lubricant undercut |
| GB1337195A (en) * | 1971-03-16 | 1973-11-14 | Inst Metallurg Zeleza Im St St | Method of tube drawing and die arrangement for application of this method |
| SU1637894A1 (en) * | 1988-11-30 | 1991-03-30 | Всесоюзный научно-исследовательский и конструкторско-технологический институт трубной промышленности | Method for drawing pipe on short mandrel |
| SU1766551A1 (en) * | 1990-08-08 | 1992-10-07 | Севастопольское Высшее Военно-Морское Инженерное Училище | Method for drawing of especially thin-walled tubes with small diameter |
| PL165192B1 (en) * | 1991-03-19 | 1994-11-30 | Inst Metali Niezelaznych | Stabilizing system for use in pipe drawing processes |
| CN201735619U (en) * | 2010-05-31 | 2011-02-09 | 浙江海亮股份有限公司 | Novel excellent-lubricating moving core assembly |
| CN108971247A (en) * | 2018-09-10 | 2018-12-11 | 江阴市洪腾机械有限公司 | A kind of combination cold drawing die reducing thickness of steel pipe difference |
-
2020
- 2020-06-01 CN CN202010483391.2A patent/CN111922105A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1250394B (en) * | 1967-09-21 | Hoesch Aktiengesellschaft Dort mund | Method and device for producing a lubricating film on the outer and inner walls of hollow profiles, in particular tubes made of metal, during cold drawing | |
| GB458737A (en) * | 1935-07-10 | 1936-12-24 | Fagersta Bruks Ab | Improvements in or relating to tube drawing mandrels with wearing surfaces of hard metal |
| DE1817515U (en) * | 1960-06-21 | 1960-09-01 | Ver Leichtmetallwerke Gmbh | DEVICE FOR DRAWING METAL PIPES, IN PARTICULAR SUCH MADE OF LIGHT METAL. |
| GB1006973A (en) * | 1961-06-30 | 1965-10-06 | Avesta Jernverks Ab | Cold drawing equipment for metal pipes |
| GB1337195A (en) * | 1971-03-16 | 1973-11-14 | Inst Metallurg Zeleza Im St St | Method of tube drawing and die arrangement for application of this method |
| DE2114510A1 (en) * | 1971-03-25 | 1972-10-05 | Inst Metallurgii Zeleza Imeni | Tube drawing with plug - with lubricant undercut |
| SU1637894A1 (en) * | 1988-11-30 | 1991-03-30 | Всесоюзный научно-исследовательский и конструкторско-технологический институт трубной промышленности | Method for drawing pipe on short mandrel |
| SU1766551A1 (en) * | 1990-08-08 | 1992-10-07 | Севастопольское Высшее Военно-Морское Инженерное Училище | Method for drawing of especially thin-walled tubes with small diameter |
| PL165192B1 (en) * | 1991-03-19 | 1994-11-30 | Inst Metali Niezelaznych | Stabilizing system for use in pipe drawing processes |
| CN201735619U (en) * | 2010-05-31 | 2011-02-09 | 浙江海亮股份有限公司 | Novel excellent-lubricating moving core assembly |
| CN108971247A (en) * | 2018-09-10 | 2018-12-11 | 江阴市洪腾机械有限公司 | A kind of combination cold drawing die reducing thickness of steel pipe difference |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474848A (en) * | 2020-11-19 | 2021-03-12 | 浙江义腾特种钢管有限公司 | Seamless thin-walled tube drawing die for integrated circuit |
| CN113172106A (en) * | 2021-05-12 | 2021-07-27 | 天津冶金集团天材科技发展有限公司 | Die-overlapping drawing process of nickel-based superalloy small-diameter thin-wall seamless tube |
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Application publication date: 20201113 |