CN103920732B - For manufacturing the mould of seamless rectangular steel tube - Google Patents
For manufacturing the mould of seamless rectangular steel tube Download PDFInfo
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- CN103920732B CN103920732B CN201410138100.0A CN201410138100A CN103920732B CN 103920732 B CN103920732 B CN 103920732B CN 201410138100 A CN201410138100 A CN 201410138100A CN 103920732 B CN103920732 B CN 103920732B
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- steel tube
- mould
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
nullThe invention discloses a kind of mould for manufacturing seamless rectangular steel tube，It includes the die ontology (1) for being arranged on cold-drawn equipment，It is provided with shaping channel (3) in described die ontology (1)，Described shaping channel (3) is provided with import (5) and outlet (4)，Described shaping channel (3) is provided with the charging hole (7) for making pipe insert near one end of import (5)，It is provided with discharge opening (2) near one end of outlet (4)，It is provided with four spirality channels in described shaping channel (3)，The import (5) of described shaping channel (3) and the cross section of outlet (4) are square，Described shaping channel (3) is spirality channel，The present invention provides a kind of and can produce seamless rectangular steel tube performance was run well without fill concrete and low cost than former seamless cold square bar、Mould for manufacturing seamless rectangular steel tube easy to use.
Description
Technical field
The present invention relates to a kind of rectangular steel tube molding commercial plant, especially relate to a kind of mould for manufacturing seamless rectangular steel tube.
Background technology
Seamless steel pipe is that one has hollow section, periphery does not has jointed strip steel.The pipeline of fluid it is widely used as owing to seamless steel pipe has hollow section, seamless steel pipe is compared with solid steel, when bending resistance torsional strength is identical, lighter in weight, it it is a kind of economic section steel products, it is widely used in manufacture structural member and machine components, such as the steel scaffold etc. in oil drill rocker, truck drive shaft, sports equipment bracing frame, construction.Seamless steel pipe can be divided into by section configuration circle, square, the shapes such as triangle, in space structure, a large amount of use rectangular steel tubes are as structural member, particularly in building trade, heavy caliber rectangular steel tube uses more and more extensive, such as geological prospecting helicoid hydraulic motor, country flag is built, large board support, five metals manufactures, various supports and the manufactures of launcher such as national defence missile launcher and satellite launch frame, the requirement of square shaped steel tube performance is more and more higher, according to prior art, common seamless cold rectangular steel tube performance is low as low in torsional strength, hot strength is low, must in rectangular steel tube fill concrete, so cost is the highest, in-convenience in use.
Summary of the invention
The technical problem to be solved is: overcome the defect of above prior art, it is provided that a kind of energy produces seamless rectangular steel tube and performance was run well without fill concrete and low cost, the mould for manufacturing seamless rectangular steel tube easy to use than former seamless cold square bar.
nullThe technical solution used in the present invention is: a kind of mould for manufacturing seamless rectangular steel tube，It includes for being arranged on the die ontology on cold-drawn equipment，It is provided with shaping channel in described die ontology，Described shaping channel is provided with inlet and outlet，Described shaping channel is provided with the charging hole for making pipe insert near one end of import，It is provided with discharge opening near one end of outlet，Described charging hole all connects with shaping channel with discharge opening and axis is located along the same line，Four spirality channels it are provided with in described shaping channel，The cross section of the inlet and outlet of described shaping channel is square，Described shaping channel is spirality channel，A length of 15 ~ 30 millimeters of described shaping channel，The angle that the helix of described shaping channel rotates to outlet from import is 11.75 ° ~ 25.31 °，The size corresponding exit cross-section size ratio of described import cross section is 1.0015 ~ 1.0216:1，The girth of described charging hole is more than or equal to the girth of exit cross-section，The diameter of described charging hole is more than the size of import cross section diagonal，Charging hole is circular hole，Described spirality channel namely refers to be provided with five spiral grooves at shaping channel inwall.
After using above structure, the present invention compared with prior art has the advantage that the seamless rectangular steel tube produced with this mould cold-drawn, by to pipe finish draw, pull out, extension processes at one time, steel pipe circumferential surface has four helixes, by the control to spiral angle, the size corresponding exit cross-section size ratio in the restriction of shaping channel length and import face crosswise, by the product produced is detected under same dimensional conditions, the seamless rectangular steel tube performance produced is good, hot strength, torsional strength and case hardness are all good than common seamless rectangular steel tube, when as in building trade and national defence, need not in seamless rectangular steel tube fill concrete, low cost, easy to use.
As preferably, described discharge opening is round table-like hole, and the diameter of described discharge opening is descending gradually to successively decrease from die ontology surface to the one end near outlet, and the product that the hole purpose that discharge opening is round table-like is to ensure that out is tubing.
As preferably, described discharge opening is connected to the square opening of circle at the bottom of discharge opening in one end of outlet is provided with, described square opening and exit cross-section are scaling relations, between described square opening with outlet, slope is connected, product out can have extruding from outlet to mould inner wall, the extruding force of product square holes uniformly so the most not only will not squeeze hinder shaping channel helical surface but also will not be because of uneven and deform to the extruding force of mould inner wall.
As preferably, described charging hole is provided with for being fixed on the stepped hole on cold-drawn equipment away from one end of shaping channel, and described stepped hole is located along the same line with the axis of shaping channel, convenient fixing mould, makes production more stable.
As preferably, described charging hole is a circular hole being connected with inlet ramp, and charging hole plays deformation buffer effect, makes pipe deformation change will not affect the quality of production, simple in construction, can meet raw material pipe and be deformed into the requirement of rectangular tube too soon.
Accompanying drawing explanation
Fig. 1 is that the present invention is for manufacturing the schematic perspective view of the mould of seamless rectangular steel tube.
Fig. 2 is that the present invention is for manufacturing the front view of the mould of seamless rectangular steel tube.
Fig. 3 is that the present invention is for manufacturing the rearview of the mould of seamless rectangular steel tube.
Fig. 4 is to cut open figure along the A-A direction of Fig. 3.
Fig. 5 is that the present invention is for manufacturing the product schematic perspective view of the mould of seamless rectangular steel tube.
Wherein, 1, die ontology, 2, discharge opening, 3, shaping channel, 4, outlet, 5, import, 6, square opening, 7, charging hole, 8, stepped hole.
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
nullAs shown in the figure，The present invention provides a kind of mould for manufacturing seamless rectangular steel tube，It includes the die ontology 1 for being arranged on cold-drawn equipment，It is provided with shaping channel 3 in described die ontology 1，Described shaping channel 3 is provided with import 5 and outlet 4，Described shaping channel 3 is provided with the charging hole 7 for making pipe insert near one end of import 5，It is provided with discharge opening 2 near one end of outlet 4，Described charging hole 7 all connects with shaping channel 3 with discharge opening 2 and axis is located along the same line，Four spirality channels it are provided with in described shaping channel 3，The import 5 of described shaping channel 3 and the cross section of outlet 4 are square，Described shaping channel 3 is spirality channel，A length of 15 ~ 30 millimeters of described shaping channel 3，The angle that the helix of described shaping channel 3 rotates to outlet 4 from import 5 is 11.75 ° ~ 25.31 °，The size corresponding outlet 4 cross sectional dimensions ratio of described import 5 cross section is 1.0015 ~ 1.0216:1，The girth of described charging hole 7 is more than or equal to the girth of outlet 4 cross sections，The diameter of described charging hole 7 is more than the size of import 5 cross section diagonal，Described discharge opening 2 is round table-like hole，The diameter of described discharge opening 2 is descending gradually to successively decrease from die ontology 1 surface to the one end near outlet 4，Described discharge opening 2 is connected to the square opening 6 of discharge opening 2 end circle in one end of outlet 4 is provided with，Described square opening 6 is scaling relation with outlet 4 cross sections，Between described square opening 6 with outlet 4, slope is connected，Described charging hole 7 is provided with the stepped hole 8 for being fixed on cold-drawn equipment away from one end of shaping channel 3，Described stepped hole 8 is located along the same line with the axis of shaping channel 3，Described charging hole 7 is a circular hole being connected with import 5 slope，The length of described shaping channel 3 can be 16.3、20.7、28.8 millimeters，The angle that the helix of described shaping channel 3 rotates to outlet 4 from import 5 can be 12 °、18.6°、24°，The size corresponding outlet 5 cross sectional dimensions ratio in described import 4 face crosswise can be 1.002:1、1.0075:1、1.02:1.
The invention have the advantages that the seamless rectangular steel tube produced with this mould cold-drawn, by to pipe finish draw, pull out, extension processes at one time, steel pipe circumferential surface has four helixes, by the control to spiral angle, the size corresponding exit cross-section size ratio in the restriction of shaping channel length and import face crosswise, by the product produced is detected under same dimensional conditions, the seamless rectangular steel tube performance produced is good, hot strength, torsional strength and case hardness are all good than common seamless rectangular steel tube, when as in building trade and national defence, need not in seamless rectangular steel tube fill concrete, low cost, easy to use.
Specifically, described discharge opening 2 is round table-like hole, and the diameter of described discharge opening 2 is descending gradually to successively decrease from die ontology 1 surface to the one end near outlet 4, and the product that the hole purpose that discharge opening 2 is round table-like is to ensure that out is tubing；Described discharge opening 2 is connected to the square opening 6 of discharge opening 2 end circle in one end of outlet 4 is provided with, described square opening 6 is scaling relation with outlet 4 cross sections, between described square opening 6 with outlet 4, slope is connected, product out can have extruding from outlet to mould inner wall, the extruding force of product square holes 6 uniformly so the most not only will not squeeze hinder shaping channel helical surface but also will not be because of uneven and deform to the extruding force of mould inner wall；Described charging hole 7 is provided with the stepped hole 8 for being fixed on cold-drawn equipment away from one end of shaping channel 3, and described stepped hole 8 is located along the same line with the axis of shaping channel 3, convenient fixing mould, makes production more stable；Described charging hole 7 is a circular hole 7 being connected with import 5 slope, and charging hole 7 plays deformation buffer effect, makes pipe deformation change will not affect the quality of production, simple in construction, can meet raw material pipe and be deformed into the requirement of rectangular tube too soon.
nullSpecifically，This mould is fixed on what cold-drawn equipment produced above，The namely upper disclosed equipment for producing screw rotor in National IP Network station，Application No. 2011101857723，The when of production，This mould is fixed on equipment，Mould circumference is limited in rotation pipe，And rotate pipe and be rotatably assorted in mold base，First，Raw material pipe one end is struck more carefully，By this end through this mould，Clamp on pulling device will clamp pipe，Then traction pipe does translational motion，Due to mould and rotation pipe axial limiting，Rotate pipe racks moving mold to rotate，Owing to mould operationally rotates，Only move during pipe work and do not rotate pipe naturally and reformed into cross section and be rectangular steel tube and rectangular steel tube outer surface can form certain helical duct，Therefore，During work，Mold rotation，Pipe passes mould translation，Both combine，Pipe has reformed into outer surface the seamless rectangular steel tube of spirality channel.In fact, in shaping channel 3, previous section is pipe deformable transition in fact, and that section that shaping channel 3 is last 3 millimeters is only the forming dimension of product, the most finally shapes, and the parts in the said equipment all can be able to find in National IP Network.
The product with this mould produced is presented herein below contrast with common seamless rectangular steel tube performance parameter, the a length of 20.7mm of shaping channel, the helix of described shaping channel 3 is 18.6 ° from import 5 to the angles of outlet 4 rotation, and size corresponding outlet 4 cross sectional dimensions in described import 5 face crosswise ratio is for 1.0075:1.
Raw material is the product worked it out of pipe diameter 250mm thickness 5mm and common seamless rectangular steel tube parameter comparison
Raw material is the product worked it out of pipe diameter 160mm thickness 5mm and common seamless rectangular steel tube parameter comparison
Raw material is the product worked it out of pipe diameter 90mm thickness 5mm and common seamless rectangular steel tube parameter comparison
Can be seen that from above table, the seamless rectangular steel tube that the present invention produces will be high than common seamless rectangular steel tube hot strength, case hardness, torsional strength and yield point, the properties of product that the explanation present invention produces are more preferable than former, especially torsional strength is than the most 200Mpa, hot strength is high will by about one time, performance is better than far away common seamless rectangular steel tube, the occasion being so suitable for is a lot, owing to seamless rectangular steel tube has lightweight feature, plus good mechanical performance, applied widely.
Above preferred embodiment of the present invention is described, but is not to be construed as limitations on claims.The present invention is not only limited to above example, and its concrete structure allows to change, and all various changes made in the protection domain of demand for independence of the present invention are the most within the scope of the present invention.
Claims (3)
1. the mould being used for manufacturing seamless rectangular steel tube, it is characterised in that: it includes for being arranged on cold-drawn equipment
Die ontology (1), be provided with shaping channel (3) in described die ontology (1), described shaping channel (3) is provided with
Import (5) and outlet (4), described shaping channel (3) is provided with for making pipe insert near one end of import (5)
Charging hole (7), near outlet (4) one end be provided with discharge opening (2), described charging hole (7) and discharge opening (2)
All connect with shaping channel (3) and axis is located along the same line, in described shaping channel (3), be provided with four spiral types
Passage, the import (5) of described shaping channel (3) and the cross section of outlet (4) are square, and described molding is led to
Road (3) is spirality channel, a length of 15～30 millimeters of described shaping channel (3), described shaping channel (3)
Helix be 11.75 °～25.31 ° from import (5) to outlet (4) angle that rotates, described import (5) is transversal
Size corresponding outlet (4) the cross sectional dimensions ratio in face is 1.0015～1.0216:1, described charging hole (7)
Girth more than or equal to the girth of outlet (4) cross section, the diameter of described charging hole (7) is horizontal more than import (5)
The size of diagonal cross section, described discharge opening (2) is round table-like hole, and the diameter of described discharge opening (2) is from mould
Body (1) surface is descending gradually to successively decrease to the one end near outlet (4), and described discharge opening (2) is close
One end of outlet (4) is connected to the square opening (6) of discharge opening (2) end circle, described square opening (6) cross section in being provided with
Being scaling relation with outlet (4) cross section, between described square opening (6) with outlet (4), slope is connected.
Mould for manufacturing seamless rectangular steel tube the most according to claim 1, it is characterised in that: described charging
Hole (7) is provided with the stepped hole (8) for being fixed on cold-drawn equipment, described step away from one end of shaping channel (3)
Hole (8) is located along the same line with the axis of shaping channel (3).
Mould for manufacturing seamless rectangular steel tube the most according to claim 1, it is characterised in that: described charging
Hole (7) is a circular hole being connected with import (5) slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138100.0A CN103920732B (en) | 2014-04-08 | 2014-04-08 | For manufacturing the mould of seamless rectangular steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138100.0A CN103920732B (en) | 2014-04-08 | 2014-04-08 | For manufacturing the mould of seamless rectangular steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103920732A CN103920732A (en) | 2014-07-16 |
| CN103920732B true CN103920732B (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138100.0A Expired - Fee Related CN103920732B (en) | 2014-04-08 | 2014-04-08 | For manufacturing the mould of seamless rectangular steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103920732B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4514997A (en) * | 1983-05-16 | 1985-05-07 | Packless Metal Hose, Inc. | Tube corrugating die |
| CN1035965A (en) * | 1988-10-29 | 1989-10-04 | 河北省文安县安里屯冷拉钢材厂 | The mould and the technology of blossom type cold-drawn square steel |
| CN102266875A (en) * | 2011-06-30 | 2011-12-07 | 宁波德艺钢管制造有限公司 | Device used for producing screw rotor |
| CN202180100U (en) * | 2011-06-30 | 2012-04-04 | 宁波德艺钢管制造有限公司 | Die for producing screw rotors |
| CN203751014U (en) * | 2014-04-08 | 2014-08-06 | 宁波德艺钢管制造有限公司 | Mold for manufacturing square seamless steel pipe |
-
2014
- 2014-04-08 CN CN201410138100.0A patent/CN103920732B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4514997A (en) * | 1983-05-16 | 1985-05-07 | Packless Metal Hose, Inc. | Tube corrugating die |
| CN1035965A (en) * | 1988-10-29 | 1989-10-04 | 河北省文安县安里屯冷拉钢材厂 | The mould and the technology of blossom type cold-drawn square steel |
| CN102266875A (en) * | 2011-06-30 | 2011-12-07 | 宁波德艺钢管制造有限公司 | Device used for producing screw rotor |
| CN202180100U (en) * | 2011-06-30 | 2012-04-04 | 宁波德艺钢管制造有限公司 | Die for producing screw rotors |
| CN203751014U (en) * | 2014-04-08 | 2014-08-06 | 宁波德艺钢管制造有限公司 | Mold for manufacturing square seamless steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103920732A (en) | 2014-07-16 |
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