CN102632093B - Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions - Google Patents
Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions Download PDFInfo
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- CN102632093B CN102632093B CN201210095216.1A CN201210095216A CN102632093B CN 102632093 B CN102632093 B CN 102632093B CN 201210095216 A CN201210095216 A CN 201210095216A CN 102632093 B CN102632093 B CN 102632093B
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Abstract
The invention discloses a steel pipe cold-drawing mould with twice-reducing and twice-shaping functions, which belongs to machining moulds and comprises an inner mould and an outer mould. Conical reducing belts are arranged at the front end of an inner hole of the outer mould, and cylindrical shaping belts are arranged at the rear end of the inner hole of the outer mould. The inner mould is inserted into the hole of the outer mould and is connected with a pull rod holder of a cold-drawing machine through a pull rod and a nut collar component, and a blank to be drawn passes through the gap between the inner mould and the outer mould. The steel pipe cold-drawing mould is characterized in that a first conical reducing belt, a first cylindrical shaping belt, a second conical reducing belt and a second cylindrical shaping belt are sequentially manufactured on the outer circumferential surface of the inner mould. Past two-pass cold-drawing production is completed by one pass, production efficiency is doubled at least, and manufacturing cost is saved. Secondary deformation belongs to warm drawing, plasticity of steel pipes is better, linearity, dimensional precision and glossiness of the drawn steel pipes can be greatly improved, and the quality of the cold-drawn steel pipes is higher than that of steel pipes produced by two passes.
Description
Technical field
The present invention relates to a kind of steel processing mold, be specifically related to a kind of mould of producing cold drawing steel tube.
Technical background
Along with developing rapidly of China's oil cylinder manufacturing, cold drawing steel tube is used in the manufacture of cylinder tube in a large number.The cold drawing die that traditional Tube Drawing technique is used, adopts two groups of moulds, carries out respectively twice cold-drawn, and technique is loaded down with trivial details, and production efficiency is low.Take utilize external diameter as the drawn tube of 194mm, the internal diameter hot-rolled pipe blank processing Φ 185*12.5 that is 162 mm be example, its production procedure is as follows:
Before cold-drawn, to carry out annealing in process to hot-rolled pipe blank, then carry out surface lubrication processing and turning processing is carried out in one end of pipe, make it to pass interior external mold.
The first passage cold-drawn, reaches external diameter 185mm, internal diameter 157mm.
After first is inferior, also to carry out again surface lubrication processing and turning processing.
The second passage cold-drawn, reaches and needs specification Φ 185*12.5.Cold drawing steel tube external diameter 185mm, internal diameter 160mm.
Cold-drawn passage is as can be seen here many, causes cold-drawn cost high, yields poorly.And the exploitation of present large hydraulic cold-draw equipment is very ripe, and large cold-drawn strength can be provided enough, is not reducing under the prerequisite of drawn tube quality, reduce cold-drawn passage, reducing cold-drawn cost, improve cold-drawn production efficiency, has been that cold-drawn industry is badly in need of the development problem solving.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of Tube Drawing mould with twice reducing and twice setting function, on the periphery of its internal mold, make successively the first conical surface reducing band, the first cylinder setting band, the second conical surface reducing band and the second cylinder setting band, in a passage cold-drawn, internal mold has twice reaming reducing and twice cylinder setting, the workload that completes original two passages, production efficiency is enhanced about more than once.
The present invention is achieved through the following technical solutions: a kind of Tube Drawing mould with twice reducing and twice setting function, is comprised of internal mold and external mold two parts.Described external mold is arranged on drawbench by the outer model fixing seat of drawbench, and the front end of external mold endoporus is taper hole reducing band, and the rear end of external mold endoporus is circular hole setting band.Described internal mold is inserted in the hole of external mold, and internal mold is connected with drawbench pull bar holder with nut gasket component by pull bar.Treat that throwing material passes through from the gap between internal mold and external mold.It is characterized in that: on the periphery of described internal mold, make successively the first conical surface reducing band, the first cylinder setting band, the second conical surface reducing band and the second cylinder setting band.
Good effect of the present invention is:
1, passage completes the output of intrinsic two passages, enhances productivity more than one times, reduces production costs, and increases economic efficiency.
2, take the company of reasonable distribution to pull out technique, secondary deformation belongs to temperature and pulls out, and the plasticity of blank is better, and steel pipe linearity, dimensional accuracy and fineness that cold-drawn goes out are all greatly improved.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is working state schematic representation of the present invention.
Fig. 2 is internal model structure schematic diagram.
Fig. 3 is cast outer mold structure schematic diagram.
In figure: 1, drawbench pull bar holder, 2, pull bar, 3, treat throwing material, 4, external mold, 4-1, taper hole reducing band, 4-2, circular hole setting band, 5, internal mold, 5-1, the first conical surface reducing band, 5-2, the first cylinder setting band, 5-3, the second conical surface reducing band, 5-4, the second cylinder setting band, 6, nut gasket component, 7, the outer model fixing seat of drawbench.
The specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows: a kind of Tube Drawing mould with twice reducing and twice setting function, is comprised of internal mold 5 and external mold 4 two parts.Described external mold 4 is arranged on drawbench by the outer model fixing seat 7 of drawbench, and the front end of external mold 4 endoporus is taper hole reducing band 4-1, and the rear end of external mold 4 endoporus is circular hole setting band 4-2.Described internal mold 5 is inserted in the hole of external mold 4, and internal mold 5 is connected with drawbench pull bar holder 1 with nut gasket component 6 by pull bar 2.Treat that throwing material 3 passes through from the gap between internal mold 5 and external mold 4.It is characterized in that: on the periphery of described internal mold 5, make successively the first conical surface reducing band 5-1, the first cylinder setting band 5-2, the second conical surface reducing band 5-3 and the second cylinder setting band 5-4.
As shown in Figure 1: processing technology and the intrinsic Tube Drawing mould process of Tube Drawing mould with twice reducing and twice setting function is basic identical, and process route is as follows:
1, check hot-rolled pipe is treated throwing material 3, requires surface bright and clean, there is no obvious hot rolling defect.
2, treat throwing material 3 and carry out annealing in process, annealing temperature is generally 800 ° of C left and right, eliminates internal stress, reduces the defects such as surface chill degree.
3, treat throwing material 3 surfaces and be lubricated processing, more than General Requirements lubricating layer thickness reaches 10 μ m.
Turning processing is carried out in the one end of 4, treating throwing material 3, and making it can be through the gap between inside and outside mould 5,4, and Vehicle Processing section is connected with drawbench power.
5, by internal mold 5, external mold 4 with treat that throwing material 3 is arranged on drawbench, carry out cold-drawn processing, treat that throwing material 3 formalizes with the gap between 4-2 with the taper hole reducing band 4-1 on 5-4 and external mold 4 endoporus and circular hole with 5-2, the second conical surface reducing band 5-3 and the setting of the second cylinder by the first conical surface reducing band 5-1 on internal mold 5, the first cylinder setting successively, its caliber and pipe thickness reach design size.
It should be noted that, when after throwing material 3 is by the first conical surface reducing band 5-1 and the first cylinder setting band 5-2, because crimp produces a large amount of heats, to treat that throwing material 3 temperature are raised to more than 200 degrees Celsius, make the plasticity of blank better, steel pipe linearity, dimensional accuracy and fineness that cold-drawn goes out are all greatly improved.
Claims (1)
1. a Tube Drawing mould with twice reducing and twice setting function, is comprised of internal mold (5) and external mold (4) two parts; Described external mold (4) is arranged on drawbench by the outer model fixing seat (7) of drawbench, and the front end of external mold (4) endoporus is taper hole reducing band (4-1), and the rear end of external mold (4) endoporus is circular hole setting band (4-2); Described internal mold (5) is inserted in the hole of external mold (4), and internal mold (5) is connected with drawbench pull bar holder (1) with nut gasket component (6) by pull bar (2); Treat that throwing material (3) passes through from the gap between internal mold (5) and external mold (4); It is characterized in that: on the periphery of described internal mold (5), make successively the first conical surface reducing band (5-1), the first cylinder setting band (5-2), the second conical surface reducing band (5-3) and the second cylinder setting band (5-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095216.1A CN102632093B (en) | 2012-04-01 | 2012-04-01 | Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095216.1A CN102632093B (en) | 2012-04-01 | 2012-04-01 | Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions |
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| Publication Number | Publication Date |
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| CN102632093A CN102632093A (en) | 2012-08-15 |
| CN102632093B true CN102632093B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210095216.1A Active CN102632093B (en) | 2012-04-01 | 2012-04-01 | Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264062A (en) * | 2013-05-24 | 2013-08-28 | 新兴铸管股份有限公司 | Hot-extrusion reaming head |
| MX2018010764A (en) * | 2016-03-11 | 2018-11-29 | Nippon Steel & Sumitomo Metal Corp | Method for manufacturing different-thickness steel pipe, and different-thickness steel pipe. |
| CN107891068B (en) * | 2017-12-19 | 2023-11-24 | 王家聪 | Cold drawing die for improving spiral defect of inner hole of steel pipe |
| CN109048230A (en) * | 2018-09-14 | 2018-12-21 | 徐州徐工液压件有限公司 | A kind of the cold-drawn pipe and cold-drawing technology of buffering high-strength steel cold-drawn impact |
| CN110314951B (en) * | 2019-08-09 | 2020-08-04 | 徐州徐工液压件有限公司 | Method for manufacturing large-caliber high-strength thick-wall cold drawn pipe |
| CN116511272B (en) * | 2023-03-13 | 2023-10-20 | 苏州华创特材股份有限公司 | Cold drawing die and cold drawing production process for seamless special-shaped tube |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201376007Y (en) * | 2009-03-18 | 2010-01-06 | 宝山钢铁股份有限公司 | Cold-drawing mold for refining crystalline grains on internal surface of steel pipe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300411A (en) * | 1994-04-14 | 1999-11-02 | Sumitomo Metal Ind Ltd | Bright annealing type clean pipe and its manufacture |
| JP2006088221A (en) * | 2004-08-27 | 2006-04-06 | Jfe Steel Kk | Manufacturing method of tube having high dimensional accuracy |
| JP5357112B2 (en) * | 2010-07-06 | 2013-12-04 | 山和鋼管株式会社 | Steel pipe drawing device and steel pipe drawing method |
| CN102120227A (en) * | 2011-02-22 | 2011-07-13 | 浙江健力股份有限公司 | Improved cold drawing mould of seamless steel pipe and cold drawing process thereof |
| CN202015747U (en) * | 2011-04-29 | 2011-10-26 | 祁阳宏泰铝业有限公司 | Segment die for automatic cold drawing machine for non-ferrous metal tubes |
| CN202490838U (en) * | 2012-04-01 | 2012-10-17 | 徐州徐工液压件有限公司 | Steel pipe cold-drawing mould with functions of twice reducing and twice forming |
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2012
- 2012-04-01 CN CN201210095216.1A patent/CN102632093B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201376007Y (en) * | 2009-03-18 | 2010-01-06 | 宝山钢铁股份有限公司 | Cold-drawing mold for refining crystalline grains on internal surface of steel pipe |
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| CN102632093A (en) | 2012-08-15 |
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