CN101468364A - Thermal expansion machine for producing stainless steel tube - Google Patents
Thermal expansion machine for producing stainless steel tube Download PDFInfo
- Publication number
- CN101468364A CN101468364A CNA2007101164085A CN200710116408A CN101468364A CN 101468364 A CN101468364 A CN 101468364A CN A2007101164085 A CNA2007101164085 A CN A2007101164085A CN 200710116408 A CN200710116408 A CN 200710116408A CN 101468364 A CN101468364 A CN 101468364A
- Authority
- CN
- China
- Prior art keywords
- section
- stainless steel
- steel tube
- heating coil
- push pedal
- 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.)
- Pending
Links
Images
Landscapes
- General Induction Heating (AREA)
Abstract
The invention provides a tube manufacturing machine for thermal diameter expansion of a stainless steel tube, and belongs to a steel tube processing device. The tube manufacturing machine comprises a bracket, a supporting plate, a rear push plate, a front push plate and a front supporting plate arranged on a stand sequentially from rear to front; an intermediate frequency heating coil of an intermediate frequency induction heating coil device consists of an induction heating coil section and a heat insulating coil section; a core head mould consists of a guide section, a diameter variation section, a diameter sizing section, a tapered section, and an alignment section from rear to front; and in the tube manufacturing machine for the thermal diameter expansion of the stainless steel tube, the structures of the core head mould and the intermediate frequency heating coil and a material of the core head mould are suitable for requirements on the thermal tube expansion of the stainless steel tube; the diameter of the stainless steel tube is arbitrarily enlarged and shaped, and the material and the wall thickness of the stainless steel tube after diameter expansion is unchanged. Simultaneously, the stainless steel tube after the diameter expansion reaches the requirement on normalizing, and improves a metallographic phase structure of the original stainless steel tube so as to improve the physical performance of the stainless steel tube after the diameter expansion and fully reach or exceed various indexes regulated by national standard.
Description
Technical field
The invention provides a kind of steel pipe processing unit (plant), especially a kind of tuber of stainless steel tube.
Background technology
At present, the stainless steel tube diameter is little of gapless stainless steel tube, and domestic maximum gauge is φ 325mm, be that the specification kind of index is incomplete with the diameter, is difficult to adapt to the application requirements of different-diameter.But up to now, also there is not suitable stainless steel tube thermal expansion tubulation apparatus.The inventor once developed the hydraulic pressure two steps propelling tuber that obtains Chinese patent (patent No. is ZL98221393.X), and developed a series of propelling tubulation apparatus that obtain Chinese patent successively.But above equipment only is adapted to the processing such as hole enlargement of carbon steel tubing, because of stainless steel have heating be difficult to control, heat radiation very fast, expand with heat and contract with cold that distortion is big, characteristics such as fragility especially during critical point temperature, the heater of existing propelling tubulation apparatus, mold materials etc. are difficult to be fit to these characteristics, the thermal expansion that therefore, above equipment can not be used for stainless steel tube.Some cold hole enlargement equipment are arranged now, and maximum hole enlargement amplitude only is 10-20 millimeters, and will carry out processing such as complicated alignment, tempering after the hole enlargement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of thermal expansion machine for producing stainless steel tube, to realize the thermal expansion processing of stainless steel tube.
The present invention realizes like this, thermal expansion machine for producing stainless steel tube, comprise the support of on support, arranging successively from back to front, support plate, back push pedal, preceding push pedal, front supporting plate, hydraulic jack is fixed on support and the support plate, back push pedal is fixed on the front end of the plunger rod on the hydraulic jack, push rod one end is fixed in the push pedal of back, the other end is fixed in the preceding push pedal, in the front of described front supporting plate the core print mould rack is arranged, between front supporting plate and the core print mould rack Frequency Induction Heating coil device is arranged, heating in medium frequency coil on the Frequency Induction Heating coil device is made up of load coil section and insulation coil segment, the core print mould is from back to front by guide section, reducer, sizing section, conical section and alignment section constitute, and insulation coil section is positioned at the outside of the sizing section and the conical section of core print mould; Percentage meter by weight, the alloy composition content of core print mould is: carbon≤0.12, chromium 23～26, nickel 19～21, molybdenum 0.2～0.4, titanium 0.1～0.2, tungsten 0.01～0.05, vanadium 0.3～0.5, silicon 1.5～2.5, all the other are iron.
This thermal expansion machine for producing stainless steel tube, the material of the structure of core print mould and heating in medium frequency coil and core print mould has adapted to the hot-expanding pipe requirement of stainless steel tube, can make the diameter of stainless steel tube optionally obtain enlarging and by shaping, and make that stainless steel tube material after the hole enlargement is constant, wall thickness is constant.Simultaneously, can make stainless steel tube after the hole enlargement reach the requirement of normalizing, improve the structure of former stainless steel tube, the physical property of the stainless steel tube after the hole enlargement is made moderate progress, meet or exceed every index of national standard defined fully, satisfied the needs of civilian, national defence, chemical industry, nuclear industry, ocean industrial market.
Description of drawings
Fig. 1 is the front view of structure of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the schematic diagram of the thermal expansion part-structure among the present invention.
Fig. 4 is the schematic diagram of the core print mould structure among the present invention.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present invention and operation principle.
As shown in drawings, the present invention's thermal expansion machine for producing stainless steel tube, comprise the support of on support 15, arranging successively from back to front 21, support plate 17, back push pedal 14, preceding push pedal 10, front supporting plate 7, hydraulic jack 20 is fixed on support 21 and the support plate 17, back push pedal 14 is fixed on the front end of the plunger rod 16 on the hydraulic jack 20, push rod 11 1 ends are fixed in the push pedal 14 of back, the other end is fixed in the preceding push pedal 10, it is characterized in that, in the front of described front supporting plate 7 core print mould rack 1 is arranged, between front supporting plate and the core print mould rack Frequency Induction Heating coil device 6 is arranged, heating in medium frequency coil on the Frequency Induction Heating coil device is made up of load coil section 5 and insulation coil segment 4, core print mould 3 is from back to front by guide section 35, reducer 34, sizing section 33, conical section 32 and alignment section 31 constitute, and insulation coil section is positioned at the outside of the sizing section and the conical section of core print mould 3; Percentage meter by weight, the alloy composition content of core print mould 3 is: carbon≤0.12, chromium 23～26, nickel 19～21, molybdenum 0.2～0.4, titanium 0.1～0.2, tungsten 0.01～0.05, vanadium 0.3～0.5, silicon 1.5～2.5, all the other are iron.
The Medium frequency induction frequency of described Frequency Induction Heating coil is 800～2000Hz, and the inductance value of load coil section is 5 μ H, and insulation coil segment inductance value is 1～1.5 μ H.Two sections coils fuse.
Scribble high-temperature lubricant at described core print mould 3 outer surfaces, this lubricant is that 1: 1 proportioning mixes by 185～200 purpose crystalline flake graphites and 600～800 purpose powder graphite by weight.Inner surface at stainless steel tube to be processed also can scribble above-mentioned high-temperature lubricant.Also can according to circumstances in high-temperature lubricant, add gluey graphite and glass dust.
On described Frequency Induction Heating coil device 6, the diameter of the insulation coil segment 4 of Frequency Induction Heating coil is greater than 100-150 millimeters of load coil section 5 diameters, and the width of insulation coil segment is 350-400 millimeters.Described diameter is meant the diameter of the circle that centers on stainless steel tube formation when load coil uses, and is not the diameter of coil method self.
There is push pedal door 8 and another push pedal door 12, two push pedal doors hydraulic jack 9 and another hydraulic jack 13 above respectively with it to link together respectively at forward and backward push pedal leading flank.The trailing flank of support plate 17 has gate 19 and the gate hydraulic jack 18 above it to link together.Gate, push pedal door are installed in respectively on the centre position of support plate, back push pedal and preceding push pedal.The concrete structure of push pedal door, gate advances gate or push pedal door on the tuber identical with operating principle and existing a series of two steps of hydraulic pressure, is prior art, no longer describes in detail.Roller top, rear end that the front portion of core print mould is positioned at the core print mould rack are equipped with pull bar 22, and pull bar passes forward and backward push pedal, support plate, realize fixing by gate.Supporting with it hydraulic power unit, medium frequency induction power supply device and electrical control cabinet etc. are arranged when obviously, the present invention uses.
Advance on the tubers equally with existing two steps of a series of hydraulic pressure, the roller of forward and backward push pedal below it is installed on the guide rail on the support.
The basic frame for movement of the present invention's thermal expansion machine for producing stainless steel tube advances tuber similar with course of action and existing a series of two steps of hydraulic pressure.During use, open push pedal door in push pedal and the preceding push pedal of back, make stainless steel tube 2 to be processed pass back push pedal and preceding push pedal, front supporting plate 7 from the outside of pull bar by the hydraulic jack of push pedal door.Close the rear end that the push pedal door in the push pedal of back makes it to withstand processed stainless steel tube, clamp the rear end of pull bar 22 fixing by gate.After this, primer fluid compressing cylinder 20, plunger rod 16 promote the back push pedal and move forward, and also move forward thereby make the back push pedal promote stainless steel tube.One section of stainless steel tube is passed through Frequency Induction Heating coil device and core print mould, and stainless steel tube is heated the back and finishes thermal expansion by the core print mould.When after after push pedal shifts the position onto, the push pedal door in the push pedal of back is opened, back push pedal and preceding push pedal while retreat under the drive of the plunger rod on the hydraulic jack and put in place.Push pedal door before closing in the push pedal, just in time withstand the rear end of processed stainless steel tube, when the plunger rod on the hydraulic jack promotes forward once more, can drive stainless steel tube carries out the second time forward and moves, another section of stainless steel tube is finished the thermal expansion of whole stainless steel tube by Frequency Induction Heating coil device and core print mould.
During use, the temperature of the stainless steel tube by Frequency Induction Heating coil device heating should be strict controlled in and stainlessly add below the thermal critical point or above (is below 850 ℃ or more than 900 ℃ as austenite).
During thermal expansion, the translational speed of stainless steel tube is 150mm～400mm/min.
The length of the sizing section of core print mould is between 150～250mm.For overcoming the bigger problem of stainless steel rising-heat contracting-cold, should design between 400～500mm from the length of sizing section conical section forward, pull out gradient and be: length 500mm, diameter should reduce 6～8mm, again toward back segment alignment section, it is identical with existing expansion system carbon steel tubing mould to pull out gradient.
Claims (4)
1, thermal expansion machine for producing stainless steel tube, comprise from back to front and go up the support of arranging (21) at support (15) successively, support plate (17), back push pedal (14), preceding push pedal (10), front supporting plate (7), hydraulic jack (20) is fixed on support (21) and the support plate (17), back push pedal (14) is fixed on the front end of the plunger rod (16) on the hydraulic jack (20), push rod (11) one ends are fixed in the back push pedal (14), the other end is fixed in the preceding push pedal (10), it is characterized in that, in the front of described front supporting plate (7) core print mould rack (1) is arranged, Frequency Induction Heating coil device (6) is arranged between front supporting plate and the core print mould rack, Frequency Induction Heating coil on the Frequency Induction Heating coil device is made up of load coil section (5) and insulation coil segment (4), core print mould (3) is from back to front by guide section (35), reducer (34), sizing section (33), conical section (32) and alignment section (31) constitute, and insulation coil section is positioned at the sizing section of core print mould (3) and the outside of conical section; Percentage meter by weight, the alloy composition content of core print mould (3) is: carbon≤0.12, chromium 23～26, nickel 19～21, molybdenum 0.2～0.4, titanium 0.1～0.2, tungsten 0.01～0.05, vanadium 0.3～0.5, silicon 1.5～2.5, all the other are iron.
2, stainless-steel pipe hole enlargement tuber as claimed in claim 1 or 2, it is characterized in that, the Medium frequency induction frequency of described Frequency Induction Heating coil is 800～2000Hz, and the inductance value of load coil section is 5 μ H, and insulation coil segment inductance value is 1～1.5 μ H.
3, stainless-steel pipe hole enlargement tuber as claimed in claim 1 or 2, it is characterized in that, scribble high-temperature lubricant at described core print mould (3) outer surface, this lubricant is by 185～200 purpose crystalline flake graphites and 600～800 purpose powder graphite, by weight mixing for the proportioning of 1:1.
4, stainless-steel pipe hole enlargement tuber as claimed in claim 1 or 2, it is characterized in that, on described Frequency Induction Heating coil device (6), the diameter of the insulation coil segment (4) of Frequency Induction Heating coil is greater than 100-150 millimeters of load coil section (5) diameters, and the width of insulation coil segment is 350-400 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101164085A CN101468364A (en) | 2007-12-29 | 2007-12-29 | Thermal expansion machine for producing stainless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101164085A CN101468364A (en) | 2007-12-29 | 2007-12-29 | Thermal expansion machine for producing stainless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101468364A true CN101468364A (en) | 2009-07-01 |
Family
ID=40826309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101164085A Pending CN101468364A (en) | 2007-12-29 | 2007-12-29 | Thermal expansion machine for producing stainless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101468364A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189188A (en) * | 2011-03-22 | 2011-09-21 | 德新钢管（中国）有限公司 | Process for manufacturing seamless stainless steel pipe with large diameter through hot expanding |
| CN102189189A (en) * | 2011-04-15 | 2011-09-21 | 湘潭华进科技有限公司 | High-precision thermal expanding method for high-strength steel pipes |
| CN102189187A (en) * | 2011-03-22 | 2011-09-21 | 德新钢管（中国）有限公司 | Manufacturing process of thermal expansion diameter duplex seamless stainless steel pipe |
| CN102553964A (en) * | 2011-12-31 | 2012-07-11 | 山东崇盛冶金氧枪有限公司 | Method for processing metal taper tube and forming machine thereof |
| CN103394532A (en) * | 2013-08-22 | 2013-11-20 | 西北有色金属研究院 | Continuous hot-drawing forming method for nickel-titanium alloy pipe |
| CN104550516A (en) * | 2014-12-15 | 2015-04-29 | 南京航空航天大学 | Steel pipe cold diameter expanding straightening method |
| CN105344725A (en) * | 2015-12-08 | 2016-02-24 | 安徽宝泰特种材料有限公司 | Drawing, expanding and follow-up heating device of cold-drawing unit |
| CN109821926A (en) * | 2019-03-28 | 2019-05-31 | 北京科技大学 | A kind of expander and method of major diameter copper alloy tube |
| CN110405091A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of determination method of steel pipe thermal expansion plug wall thickness |
| CN110405090A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of heavy caliber seamless steel pipe thermal expansion heating coil external diameter determination method |
| CN113578986A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692A (en) * | 2021-06-29 | 2021-11-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
-
2007
- 2007-12-29 CN CNA2007101164085A patent/CN101468364A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189188A (en) * | 2011-03-22 | 2011-09-21 | 德新钢管（中国）有限公司 | Process for manufacturing seamless stainless steel pipe with large diameter through hot expanding |
| CN102189187A (en) * | 2011-03-22 | 2011-09-21 | 德新钢管（中国）有限公司 | Manufacturing process of thermal expansion diameter duplex seamless stainless steel pipe |
| CN102189189A (en) * | 2011-04-15 | 2011-09-21 | 湘潭华进科技有限公司 | High-precision thermal expanding method for high-strength steel pipes |
| CN102553964A (en) * | 2011-12-31 | 2012-07-11 | 山东崇盛冶金氧枪有限公司 | Method for processing metal taper tube and forming machine thereof |
| CN103394532A (en) * | 2013-08-22 | 2013-11-20 | 西北有色金属研究院 | Continuous hot-drawing forming method for nickel-titanium alloy pipe |
| CN104550516A (en) * | 2014-12-15 | 2015-04-29 | 南京航空航天大学 | Steel pipe cold diameter expanding straightening method |
| CN104550516B (en) * | 2014-12-15 | 2016-07-06 | 南京航空航天大学 | The cold expanding method for aligning of steel pipe |
| CN105344725A (en) * | 2015-12-08 | 2016-02-24 | 安徽宝泰特种材料有限公司 | Drawing, expanding and follow-up heating device of cold-drawing unit |
| CN109821926A (en) * | 2019-03-28 | 2019-05-31 | 北京科技大学 | A kind of expander and method of major diameter copper alloy tube |
| CN110405091A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of determination method of steel pipe thermal expansion plug wall thickness |
| CN110405090A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of heavy caliber seamless steel pipe thermal expansion heating coil external diameter determination method |
| CN113578986A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692A (en) * | 2021-06-29 | 2021-11-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136B (en) * | 2021-06-29 | 2022-08-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113578986B (en) * | 2021-06-29 | 2022-08-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692B (en) * | 2021-06-29 | 2022-08-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101468364A (en) | Thermal expansion machine for producing stainless steel tube | |
| CN106734429B (en) | A kind of aero titanium alloy 3D free bend warm forming device and manufacturing process | |
| CN108856441B (en) | Pipe thermal medium internal pressure forming method based on molten glass | |
| CN102133582B (en) | Mold/non-mode combined pulling process and device | |
| CN100340352C (en) | Roller center heater of magnesium alloy board | |
| CN103480686B (en) | A kind of former of spiral pipe with special section and forming method | |
| CN105202949A (en) | Controllable-temperature self-cooling protection high-temperature U-tube evaporator | |
| CN106914554A (en) | The step of heavy caliber seamless steel pipe two push type thermal expansion machine and its thermal expansion process | |
| CN201183072Y (en) | Stainless steel tube hot expanded diameter pipe making machine | |
| CN101069901A (en) | Copper alloy continuous extrusion method and special apparatus | |
| CN201168760Y (en) | Forging machine producing fixed length heat pipe choke | |
| CN201023120Y (en) | Thin and long rod tube end stamping and forging front-middle frequency two-stage heating device | |
| CN107520275B (en) | The method that a kind of high temperature and pressure thick-wall seamless road squeezes the curved combined shaping of forging | |
| CN101631402B (en) | Multi-section medium frequency heating method for pipe expanding set and device thereof | |
| CN102650165B (en) | Construction method for eliminating concrete shrinkage cracks of steel plate and concrete combined shear wall by preheating steel plate | |
| CN105695715B (en) | The heat treatment deformation device and its process of large-diameter and thin-wall pipe | |
| CN105057478B (en) | The method producing Varying-thickness variable diameters steel pipe | |
| CN101693260A (en) | Method for drawing high-precision aluminum pipe | |
| CN2913791Y (en) | Electromagnetic heating tube for crude oil gathering pipeline | |
| CN101633008A (en) | Conical seamless steel-tube making machine | |
| CN2887485Y (en) | Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine | |
| CN102133583A (en) | Die/dieless integrated drawing process and device | |
| CN203999725U (en) | Matrix material transfer lime inside and outside wall is quenching machine simultaneously | |
| CN203426220U (en) | Manual type pipe hot-bending device | |
| CN203513743U (en) | Sucker rod pipe nipple heat treatment equipment of adjustable straightening device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090701 |