CN103920732A - Mold for manufacturing seamless square steel tube - Google Patents
Mold for manufacturing seamless square steel tube Download PDFInfo
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- CN103920732A CN103920732A CN201410138100.0A CN201410138100A CN103920732A CN 103920732 A CN103920732 A CN 103920732A CN 201410138100 A CN201410138100 A CN 201410138100A CN 103920732 A CN103920732 A CN 103920732A
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- outlet
- shaping channel
- steel tube
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- rectangular steel
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Abstract
The invention discloses a mold for manufacturing a seamless square steel tube. The mold comprises a mold body (1) mounted on a cold-draw device, wherein a forming channel (3) is arranged in the mold body (1) and is provided with an inlet (5) and an outlet (4), a feeding hole (7) for the insertion of a round tube is formed in one end, close to the inlet (5), of the forming channel, a discharging hole (2) is formed in one end, close to the outlet (4), of the forming channel, four spiral channels are arranged in the forming channel (3), the cross sections of the inlet (5) and the outlet (4) of the forming channel (3) are square, and the forming channel (3) is a spiral channel. The mold for manufacturing the seamless square steel tube has the advantages that the performance of the seamless square steel tube is better than that of an existing cold-drawn seamless square steel tube, the concrete does not need to be filled, the cost is low, and the use is convenient.
Description
Technical field
The present invention relates to a kind of rectangular steel tube moulding commercial plant, especially relate to a kind of mould for the manufacture of seamless rectangular steel tube.
Background technology
Seamless steel pipe is that one has hollow section, periphery does not have jointed rectangular steel.Because seamless steel pipe has hollow section and be widely used as the pipeline of fluid, seamless steel pipe is compared with solid steel, in the time that bending resistance torsional strength is identical, weight is lighter, a kind of Economic Section steel, be widely used in manufacturing structure part and machine components, as steel scaffold of using in oil drill rocker, truck drive shaft, sports equipment bracing frame, construction etc.Seamless steel pipe can be divided into and have circle by section configuration, square, the shapes such as triangle, in space structure, a large amount of rectangular steel tubes that use 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's landmark building, large board support, five metals is manufactured, the manufacture of the various supports such as national defence missile launcher and satellite launch frame and launcher, the requirement of square shaped steel tube performance is also 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 be in rectangular steel tube fill concrete, cost is very high like this, use inconvenient.
Summary of the invention
Technical problem to be solved by this invention is: overcome the defect of above prior art, providing the seamless rectangular steel tube of a kind of energy production that the former seamless cold square bar of Performance Ratio is run well need not fill concrete and the cost mould for the manufacture of seamless rectangular steel tube low, easy to use.
The technical solution used in the present invention is: a kind of mould for the manufacture of seamless rectangular steel tube, it comprises for being arranged on the die ontology on cold-draw equipment, in described die ontology, be provided with shaping channel, described shaping channel is provided with import and outlet, described shaping channel is provided with the charging hole for pipe is inserted near one end of import, one end near outlet is provided with discharge opening, described charging hole and discharge opening are all communicated with shaping channel and axis is located along the same line, in described shaping channel, be provided with four spirality channels, the import of described shaping channel and the cross section of outlet are square, described shaping channel is spirality channel, the length of described shaping channel is 15 ~ 30 millimeters, the helix of described shaping channel is 11.75 ° ~ 25.31 ° from import to the angle of outlet rotation, the outlet cross sectional dimensions ratio that the size of described import cross section is answered is in contrast 1.0015 ~ 1.0216:1, the girth of described charging hole is more than or equal to the girth that exports cross section, the diameter of described charging hole is greater 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.
Adopt after above structure, the present invention compared with prior art has the following advantages: the seamless rectangular steel tube of producing 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 restriction of shaping channel length and the import outlet cross sectional dimensions ratio that the size of face is answered in contrast crosswise, in same size situation by produce product detect, the seamless rectangular steel tube performance of producing is good, hot strength, torsional strength and case hardness are all good than common seamless rectangular steel tube, in as building trade and national defence, need not be in seamless rectangular steel tube fill concrete, cost is low, easy to use.
As preferably, described discharge opening is round table-like hole, and the diameter of described discharge opening is from die ontology surface to being descendingly to successively decrease gradually near one end of outlet, and discharge opening is that round table-like hole object is that the product that ensures is out tubing.
As preferably, described discharge opening is connected to the square opening of justifying at the bottom of discharge opening in being provided with near one end of outlet, described square opening is that ratio is amplified relation with outlet cross section, between described square opening and outlet, slope is connected, product out can have extruding to mould inner wall from outlet, and the extruding force in product square shaped hole evenly neither can be squeezed the helical surface of hindering shaping channel so again can be because of not inhomogeneous and be out of shape 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-draw equipment away from one end of shaping channel, and described stepped hole and the axis of shaping channel are located along the same line, and facilitate fixed mould, makes to produce more stable.
As preferably, described charging hole is a circular hole being connected with import slope, and charging hole plays distortion cushioning effect, and pipe distortion is changed can be too not fast, affects the quality of production, simple in structure, can meet raw material pipe and be deformed into the requirement of rectangular tube.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the present invention for the manufacture of the mould of seamless rectangular steel tube.
Fig. 2 is the front view of the present invention for the manufacture of the mould of seamless rectangular steel tube.
Fig. 3 is the rearview of the present invention for the manufacture of the mould of seamless rectangular steel tube.
Fig. 4 cuts open figure along the A-A direction of Fig. 3.
Fig. 5 is the product schematic perspective view of the present invention for the manufacture 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
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in the figure, the invention provides a kind of mould for the manufacture of seamless rectangular steel tube, it comprises for being arranged on the die ontology 1 on cold-draw equipment, in described die ontology 1, be provided with shaping channel 3, described shaping channel 3 is provided with import 5 and outlet 4, described shaping channel 3 is provided with the charging hole 7 for pipe is inserted near one end of import 5, one end near outlet 4 is provided with discharge opening 2, described charging hole 7 and discharge opening 2 are all communicated with shaping channel 3 and axis is located along the same line, in described shaping channel 3, be provided with four spirality channels, 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 length of described shaping channel 3 is 15 ~ 30 millimeters, the helix of described shaping channel 3 is 11.75 ° ~ 25.31 ° from import 5 to the angle of outlet 4 rotations, the outlet 4 cross sectional dimensions ratios that the size of described import 5 cross sections is answered are in contrast 1.0015 ~ 1.0216:1, the girth of described charging hole 7 is more than or equal to the girth that exports 4 cross sections, the diameter of described charging hole 7 is greater than the size of import 5 cross section diagonals, described discharge opening 2 is round table-like hole, the diameter of described discharge opening 2 is from die ontology 1 surface to being descendingly to successively decrease gradually near outlet one end of 4, described discharge opening 2 is connected to the square opening 6 of 2 end of discharge opening circle in being provided with near one end of outlet 4, described square opening 6 is that ratio is amplified relation with outlet 4 cross sections, between described square opening 6 and outlet 4, slope is connected, described charging hole 7 is provided with for being fixed on the stepped hole 8 on cold-draw 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 slopes, the length of described shaping channel 3 can be 16.3, 20.7, 28.8 millimeters, the helix of described shaping channel 3 can be 12 ° from import 5 to the angle of outlet 4 rotations, 18.6 °, 24 °, described import 4 outlet that the size of face is answered in contrast crosswise 5 cross sectional dimensions ratios can be 1.002:1, 1.0075:1, 1.02:1.
The present invention has the following advantages: the seamless rectangular steel tube of producing 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 restriction of shaping channel length and the import outlet cross sectional dimensions ratio that the size of face is answered in contrast crosswise, in same size situation by produce product detect, the seamless rectangular steel tube performance of producing is good, hot strength, torsional strength and case hardness are all good than common seamless rectangular steel tube, in as building trade and national defence, need not be in seamless rectangular steel tube fill concrete, cost is low, easy to use.
Specifically, described discharge opening 2 is round table-like hole, and the diameter of described discharge opening 2 is from die ontology 1 surface to being descendingly to successively decrease gradually near outlet one end of 4, discharge opening 2 for round table-like hole object be that the product that ensures is out tubing; Described discharge opening 2 is connected to the square opening 6 of 2 end of discharge opening circle in being provided with near one end of outlet 4, described square opening 6 is that ratio is amplified relation with outlet 4 cross sections, between described square opening 6 and outlet 4, slope is connected, product out can have extruding to mould inner wall from outlet, and the extruding force in product square shaped hole 6 evenly neither can be squeezed the helical surface of hindering shaping channel so again can be because of not inhomogeneous and be out of shape to the extruding force of mould inner wall; Described charging hole 7 is provided with for being fixed on the stepped hole 8 on cold-draw 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, facilitates fixed mould, makes to produce more stable; Described charging hole 7 is a circular hole 7 being connected with import 5 slopes, 7 of charging holes distortion cushioning effects, and pipe distortion is changed can be too not fast, affects the quality of production, simple in structure, can meet raw material pipe and be deformed into the requirement of rectangular tube.
Specifically, this mould is fixed on that cold-draw equipment produces above, the namely upper disclosed equipment for the production of screw rotor in National IP Network station, application number is 2011101857723, when production, this mould is fixed on equipment, mould is circumferentially limited in and rotates in pipe, be rotatably assorted in mold base and rotate pipe, first, raw material pipe one end is struck more carefully, this end is passed to this mould, clamp on pulling device will be clamped pipe, then draw pipe and do translational motion, due to mould and rotation pipe axial limiting, rotating pipe racks moving mold rotates, because mould rotates in the time working, pipe when work is only mobile does not rotate naturally pipe just to have become cross section is that rectangular steel tube and rectangular steel tube outer surface can form certain helical duct, therefore, when work, mold rotation, pipe is through mould translation, both combinations, pipe has just become outer surface the seamless rectangular steel tube of spirality channel.In fact, in shaping channel 3, previous section is just pipe distortion transition in fact, and that section that shaping channel 3 is last 3 millimeters is only the forming dimension of product, namely finally sizing, and the parts in the said equipment all can find in National IP Network.
The product produced with this mould and common seamless rectangular steel tube performance parameter contrast below, the length of shaping channel is 20.7mm, the helix of described shaping channel 3 is 18.6 ° from import 5 to the angle of outlet 4 rotations, and described import 5 outlet that the size of face is answered in contrast crosswise 4 cross sectional dimensions are than being 1.0075:1.
Raw material are product and the common seamless rectangular steel tube parameter comparison that pipe diameter 250mm thickness 5mm works it out
Raw material are product and the common seamless rectangular steel tube parameter comparison that pipe diameter 160mm thickness 5mm works it out
Raw material are product and the common seamless rectangular steel tube parameter comparison that pipe diameter 90mm thickness 5mm works it out
Can find out from above table, the seamless rectangular steel tube that the present invention produces is all higher than common seamless rectangular steel tube hot strength, case hardness, torsional strength and yield point, illustrate that the properties of product produced with the present invention are better than former, especially torsional strength is than at least many in the past 200Mpa, hot strength height nearly one times, performance is better than common seamless rectangular steel tube far away, applicable like this occasion is a lot, because seamless rectangular steel tube has lightweight feature, add good mechanical performance, applied widely.
Just preferred embodiment of the present invention is described above, but can not be interpreted as it is limitations on claims.The present invention is not only confined to above embodiment, and its concrete structure allows to change, and all various variations of doing in the protection domain of demand for independence of the present invention are all in protection scope of the present invention.
Claims (5)
1. the mould for the manufacture of seamless rectangular steel tube, it is characterized in that: it comprises for being arranged on the die ontology (1) on cold-draw equipment, in described die ontology (1), be provided with shaping channel (3), described shaping channel (3) is provided with import (5) and outlet (4), described shaping channel (3) is provided with the charging hole (7) for pipe is inserted near one end of import (5), one end near outlet (4) is provided with discharge opening (2), described charging hole (7) and discharge opening (2) are all communicated with shaping channel (3) and axis is located along the same line, in described shaping channel (3), be provided with four spirality channels, the cross section of the import (5) of described shaping channel (3) and outlet (4) is square, described shaping channel (3) is spirality channel, the length of described shaping channel (3) is 15 ~ 30 millimeters, the helix of described shaping channel (3) is 11.75 ° ~ 25.31 ° from import (5) to the angle of outlet (4) rotation, outlet (4) the cross sectional dimensions ratio that the size of described import (5) cross section is answered is in contrast 1.0015 ~ 1.0216:1, the girth of described charging hole (7) is more than or equal to the girth of outlet (4) cross section, the diameter of described charging hole (7) is greater than the size of import (5) cross section diagonal.
2. the mould for the manufacture of seamless rectangular steel tube according to claim 1, it is characterized in that: described discharge opening (2) is for round table-like hole, the diameter of described discharge opening (2) is from die ontology (1) surface to being descendingly to successively decrease gradually near the one end that exports (4).
3. the mould for the manufacture of seamless rectangular steel tube according to claim 2, it is characterized in that: described discharge opening (2) is connected to the square opening (6) of discharge opening (2) end circle in being provided with near one end of outlet (4), described square opening (6) is that ratio is amplified relation with outlet (4) cross section, and between described square opening (6) and outlet (4), slope is connected.
4. the mould for the manufacture of seamless rectangular steel tube according to claim 1, it is characterized in that: described charging hole (7) is provided with for being fixed on the stepped hole (8) on cold-draw 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).
5. the mould for the manufacture of seamless rectangular steel tube according to claim 1, is characterized 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 true CN103920732A (en) | 2014-07-16 |
| CN103920732B 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 |
|---|---|
| CN103920732B (en) | 2016-09-28 |
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Granted publication date: 20160928 |
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