CN104772360A - Drawing outer die with highly hard work surface - Google Patents
Drawing outer die with highly hard work surface Download PDFInfo
- Publication number
- CN104772360A CN104772360A CN201510148026.5A CN201510148026A CN104772360A CN 104772360 A CN104772360 A CN 104772360A CN 201510148026 A CN201510148026 A CN 201510148026A CN 104772360 A CN104772360 A CN 104772360A
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- CN
- China
- Prior art keywords
- matrix
- external mold
- endoporus
- hardness
- stretching
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
Abstract
The invention discloses a drawing outer die with a highly hard work surface. The die comprises an outer sleeve and a base body fixed in the outer sleeve and is characterized in that an inner hole for extruding the outer wall of a metal pipeline is formed in the base body; a physical vapor deposition coating by virtue of which the surface hardness of the inner hole is improved is attached to the inner surface of the inner hole. A specific hard alloy material is adopted for the base body; machining is performed to form a specific inner surface and the hardening process is performed on the inner surface of the drawing outer die by using a PVD technique, so that the hardness of the inner surface is increased to be above 2 times that of the base body. The hardness and the wear resistance of the inner surface of the drawing outer die are improved.
Description
Technical field
The present invention relates to a kind of stretching external mold, particularly a kind of stretching external mold with high rigidity, low friction operation surface.
Background technology
Existing stretching external mold outside uses ordinary steel, and core uses Hardmetal materials, after corresponding operation processing, forms special inner surface.In use, due to carbide alloy composition feature and mechanical performance limitation, wearability is inadequate, makes stretching external mold working face ratio be easier to wearing and tearing and scrap; Material surface hardness is inadequate, uses a period of time easily to occur sticky copper, causes product surface to scratch.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the stretching external mold of a kind of wear-resisting, high rigidity, low friction.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of stretching external mold with high hard working surface, comprise overcoat and be fixed on the matrix in overcoat, it is characterized in that: the endoporus being provided with stretching extrusion metal outer pipe wall in described matrix, the inner surface additional of described endoporus is improved the physical gaseous phase deposition coating of inner surface hardness.
Described endoporus includes mouth region, sizing area and outlet area, and described inlet region is go out to hold little horn mouth greatly into end, and described outlet area is littlely go out to hold large horn mouth into holding.
Described overcoat comprises installs the installing hole of matrix, and have boss in described installing hole, the side of this boss and the end face of matrix are conflicted, and described boss is provided with inclined-plane, and this inclined-plane surrounds and goes out to hold large horn mouth into end is little.
The invention has the beneficial effects as follows: the endoporus being provided with stretching extrusion metal outer pipe wall in this matrix, the inner surface additional of described endoporus is improved the physical gaseous phase deposition coating of bore area hardness, matrix selects specific Hardmetal materials, after being processed to form specific inner surface, use PVD (physical vapour deposition (PVD)) technology again, to the inner surface cure process of stretching external mold, inner surface hardness is made to bring up to more than 2 times of matrix.Thus improve hardness, the increase wearability of stretching external mold bore area, obtain following huge effect:
1. solve stretching external mold and in use occur circular groove problem too early;
2. decrease stretching external mold and glue copper scuffing in use procedure;
3. reduce stretching external mold drawing resistance;
4. improve the service life of stretching external mold significantly.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is profile of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, described embodiment example is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by embodiment is described with reference to the drawings, be intended to explain the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it should be noted that, for the noun of locality, if any term " " center ", " transverse direction ", " longitudinal direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", indicating positions such as " counterclockwise " and position relationship are based on orientation shown in the drawings or position relationship, only for the ease of describing the present invention and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with particular orientation structure and operation, restriction concrete protection domain of the present invention can not be interpreted as.
In addition, if any term " first ", " second " only for describing object, and instruction or hint relative importance can not be interpreted as or imply the quantity indicating technical characteristic.Thus, be limited with " first ", " second " feature can express or implicit comprise one or more this feature, in the present description, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, except as otherwise clear stipulaties and restriction, should go to understand as broad sense if any term " assembling ", " being connected ", " connection " term, such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Also can be mechanical connection; Can be directly be connected, also can be connected by intermediary, can be that two element internals are connected.For those of ordinary skills, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In invention, unless otherwise prescribed and limit, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise fisrt feature and second feature and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " under " and " above " comprise fisrt feature directly over second feature and oblique upper, or be only represent the height of fisrt feature level height higher than second feature.Fisrt feature second feature " on ", " under " and " below " comprise fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is lower than second feature.
Below in conjunction with accompanying drawing, by being further described the specific embodiment of the present invention, make technical scheme of the present invention and beneficial effect thereof clearly, clearly.
With reference to Fig. 1, the invention discloses a kind of stretching external mold with high hard working surface, the overcoat 1 comprising circular tube shaped and the matrix 2 be fixed in overcoat 1, the endoporus of extrusion metal outer pipe wall is provided with in described matrix 2, the inner surface additional of described endoporus is improved the physical gaseous phase deposition coating 3 of bore area hardness, matrix 2 material is normal Hardmetal materials, can suitably select the trades mark such as the good YG8 of hardness, shaping through machining, and carry out follow-up microstoning; The residues such as cleaning matrix 2 surface and oil contaminant, select suitable high rigidity, low friction PVD coating material, carry out PVD coating surface strengthening processing in coating apparatus; Ensure that PVD coating film thickness is even and adhesion is enough strong.PVD coating on matrix 2 in use can not be come off too early, thus reach the object improving stretching external mold service life.
As shown in the figure, described matrix 2 endoporus includes mouth region 4, sizing area 5 and outlet area 6, described inlet region 4 is go out to hold little horn mouth greatly into end, described outlet area 6 is littlely go out to hold large horn mouth into holding, sizing area 5 is the circular hole of constant diameter, when extrusion metal tubing, stretching external mold need with floating core head with the use of, metal pipe material is by the endoporus of matrix 2, the outer surface of the inner surface stretching extrusion metal tubing of endoporus, and the inner surface of the outer surface extrusion metal tubing of floating core head, metal pipe material enters from the large aperture end of stretching external mold, extruded by the stretching gradually of the inner surface of inlet region 4, the external diameter of metal pipe material reduces gradually, satisfactory external diameter is accurately being obtained by sizing area 5 is rear, the greasy filth of the metal dust that stretching produces or metal dust and lubricating oil formation is then discharged by outlet area 6, and outlet area 6 be into hold little go out to hold large horn mouth be convenient to just discharge above-mentioned substance, and the design of said structure is also beneficial to the effect of stretching extrusion metal tubing.
As shown in the figure, the concrete structure of overcoat 1 is: described overcoat 1 comprises installs matrix 2 installing hole, and have boss in described installing hole, the side of this boss and the end face of matrix 2 are conflicted, described boss is provided with inclined-plane 7, and this inclined-plane 7 surrounds and goes out to hold large horn mouth into end is little.
In sum, this stretching external mold selects the Hardmetal materials of soft high strength as base material, obtains inlet region 4, sizing area 5 and outlet area 6 through processing.Afterwards, use PVD (physical vapour deposition (PVD)) technology, the inner surface of stretching external mold is increased, and one or more layers is superhard, the physical gaseous phase deposition coating of high abrasion, low-friction coefficient 3, and case hardness can bring up to more than the twice of matrix 2.Thus improve bore area hardness and the wearability of stretching external mold, reduce the coefficient of friction with copper pipe in the use procedure of stretching external mold simultaneously, significantly improve the service life of stretching external mold, reduce sticky copper and scratch.
Above a kind of stretching external mold with high hard working surface that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (3)
1. one kind has the stretching external mold of high hard working surface, comprise overcoat and be fixed on the matrix in overcoat, it is characterized in that: the endoporus being provided with extrusion metal outer pipe wall in described matrix, the inner surface additional of described endoporus is improved the physical gaseous phase deposition coating of bore area hardness.
2. a kind of stretching external mold with high hard working surface according to claim 1, it is characterized in that: described endoporus includes mouth region, sizing area and outlet area, described inlet region is go out to hold little horn mouth greatly into end, and described outlet area is littlely go out to hold large horn mouth into holding.
3. a kind of stretching external mold with high hard working surface according to claim 1, it is characterized in that: described overcoat comprises the installing hole installing matrix, in described installing hole, there is boss, the side of this boss and the end face of matrix are conflicted, described boss is provided with inclined-plane, and this inclined-plane surrounds and goes out to hold large horn mouth into end is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148026.5A CN104772360A (en) | 2015-03-31 | 2015-03-31 | Drawing outer die with highly hard work surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148026.5A CN104772360A (en) | 2015-03-31 | 2015-03-31 | Drawing outer die with highly hard work surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104772360A true CN104772360A (en) | 2015-07-15 |
Family
ID=53614301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510148026.5A Pending CN104772360A (en) | 2015-03-31 | 2015-03-31 | Drawing outer die with highly hard work surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104772360A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077121A (en) * | 2016-06-22 | 2016-11-09 | 柳州市同进汽车零部件制造有限公司 | Heavy caliber hard alloy drawing die |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699216A (en) * | 1992-09-16 | 1994-04-12 | Sumitomo Metal Ind Ltd | Hot extruding die |
| JPH10192958A (en) * | 1997-01-08 | 1998-07-28 | Nippon Light Metal Co Ltd | Surface modification method of die for extruding aluminum |
| CN2502815Y (en) * | 2001-05-18 | 2002-07-31 | 青岛绿华塑料机械有限公司 | Aluminium pipe metering device |
| CN102712021A (en) * | 2010-02-12 | 2012-10-03 | 诺尔斯海德公司 | Modular extrusion die |
| CN203678890U (en) * | 2013-12-25 | 2014-07-02 | 隆昌山川精密焊管有限责任公司 | Hard alloy drawing die |
| CN104307899A (en) * | 2014-11-13 | 2015-01-28 | 重庆龙煜精密铜管有限公司 | Process for machining special pipe |
| CN204544997U (en) * | 2015-03-31 | 2015-08-12 | 广东龙丰精密铜管有限公司 | PVD surface peening stretching external mold |
-
2015
- 2015-03-31 CN CN201510148026.5A patent/CN104772360A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699216A (en) * | 1992-09-16 | 1994-04-12 | Sumitomo Metal Ind Ltd | Hot extruding die |
| JPH10192958A (en) * | 1997-01-08 | 1998-07-28 | Nippon Light Metal Co Ltd | Surface modification method of die for extruding aluminum |
| CN2502815Y (en) * | 2001-05-18 | 2002-07-31 | 青岛绿华塑料机械有限公司 | Aluminium pipe metering device |
| CN102712021A (en) * | 2010-02-12 | 2012-10-03 | 诺尔斯海德公司 | Modular extrusion die |
| CN203678890U (en) * | 2013-12-25 | 2014-07-02 | 隆昌山川精密焊管有限责任公司 | Hard alloy drawing die |
| CN104307899A (en) * | 2014-11-13 | 2015-01-28 | 重庆龙煜精密铜管有限公司 | Process for machining special pipe |
| CN204544997U (en) * | 2015-03-31 | 2015-08-12 | 广东龙丰精密铜管有限公司 | PVD surface peening stretching external mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077121A (en) * | 2016-06-22 | 2016-11-09 | 柳州市同进汽车零部件制造有限公司 | Heavy caliber hard alloy drawing die |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: JINLONG PRECISION COPPER TUBE GROUP CO., LTD. Effective date: 20150901 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150901 Address after: Zhuhai Avenue Road 519000 Guangdong province Shuanglin Jinwan District East of Zhuhai City Applicant after: Guangdong Longfeng Precise Copper Tube Co., Ltd. Applicant after: Jinlong Precision Copper Pipe Group Co., Ltd. Address before: Zhuhai Avenue Road 519000 Guangdong province Shuanglin Jinwan District East of Zhuhai City Applicant before: Guangdong Longfeng Precise Copper Tube Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |