CN102213270A - Inner slope type forged hubbed flange - Google Patents
Inner slope type forged hubbed flange Download PDFInfo
- Publication number
- CN102213270A CN102213270A CN2010101437347A CN201010143734A CN102213270A CN 102213270 A CN102213270 A CN 102213270A CN 2010101437347 A CN2010101437347 A CN 2010101437347A CN 201010143734 A CN201010143734 A CN 201010143734A CN 102213270 A CN102213270 A CN 102213270A
- Authority
- CN
- China
- Prior art keywords
- flange
- esophagus
- slope
- cervical part
- straight
- 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
- Butt Welding And Welding Of Specific Article (AREA)
- Forging (AREA)
Abstract
The invention discloses a forged hubbed (high neck) flange joint for a steel tube structure. The forged flange is connected with a steel tube through a circumferential weld; the forged hubbed (high neck) flange comprises a flange plate, a variable slope section, a straight neck section and a ring bolt hole, wherein the variable slope section of the flange has a main inner slope and a larger and even right-angled outer slope; and the straight neck section can be (not) arranged on the variable slope section and contributes to guaranteeing weld joint quality and weld joint quality detection. The length of the weld joint connecting the flange and the steel tube is 20 to 30 percent of that of a rigid flange, automatic welding is realized, and the flange is a connecting flange for lightening the labor intensity and improving the machining and manufacturing efficiency.
Description
Technical field
The present invention is applicable to civil engineering structure for steel-pipe construction provides simple and direct, quick and the reliable novel joint Connecting format of structural behaviour, comprises engineering structures such as construction engineering, bridge works, pylon structure.
Background technique
The steel-tube construction joint form is steel-tube construction design and the key of building.At present, steel-pipe construction mainly adopts and adds stiffening flange and two kinds of forms of no stiffening flange.
Add stiffening flange and have better rigidity, stress performance and integrity, the stiffening flange of adding practical engineering application is widely arranged, and in the important stressed member of important engineering connects, use more general.But, there is the stiffening rib welding that adds stiffening flange comparatively loaded down with trivial details, and is manual welding usually, working efficiency is relatively low, can not finely satisfy the project progress requirement.The stiffening flange pressurized is arranged, when curved, the power at its pressurized edge is transmitted by the inside and outside ring attachment weld between tube wall and the flanged plate, inside and outside connecting ring weld seam bearing capacity sum should be less than the tube wall bearing capacity, flanged plate is subjected to curved should control by maximum tension bolt region.Do not have and to add also practical engineering application widely of stiffening flange, still, because it is not lower not have the coupling stiffness that adds stiffening flange, distortion may be bigger than normal, generally is used for stressed less member.No stiffening flange is mainly by two angle welding power transmissions, so angle welding is very important.
Forge the joint steel pipe of hubbed flange with basically identical with neck finish diameter, the wall thickness of neck W.N flange, connect by butt weld, hubbed flange is with one section straight cervical part of esophagus and variable slope segment, make the stressed coordination of flange, the structure more reasonable, improve stress performance and the coupling stiffness of non-stiffened flange, if the coupling stiffness of hubbed flange reasonable in design is between non-stiffened flange with have between the stiffening flange of adding.So forging hubbed flange is a kind of outstanding steel-pipe construction connected node form.
Summary of the invention
The invention provides a kind of forging band neck (hub) bump joint for steel-tube construction, forged flange is connected with steel pipe by one girth joint, and steel can adopt the existing steel grades both domestic and external such as Q235, Q345, Q390, Q420, Q460; Forge band neck (hub) flange and comprise flanged plate, variable slope segment, straight cervical part of esophagus and hoop bolt hole.The variable slope segment of this flange is take inner slope as main, and outer slope is big even be the right angle; Can arrange or not establish straight cervical part of esophagus in variable slope segment, straight cervical part of esophagus is conducive to guarantee that weldquality and weldquality detect.
This forges hubbed flange with the variable slope segment of variable cross-section, compares flexible flange and has better coupling stiffness, and variable slope segment inner slope section angle is θ
1=8 °～20 °, an outer slope section angle are θ
2=0 °～10 °, outer slope section can adopt straight wall, dwindles bolt circle diameter (B.C.D.) as far as possible, guarantees the flanged plate more reasonable stress; Domatic and flanged plate, straight cervical part of esophagus and variable slope segment hinged place arrange the chamfering of 1.0mm～2.0mm, reduce stress and concentrate, and improve the fatigue strength of flange under dynamic load.This forged flange can arrange straight cervical part of esophagus in the variable slope segment end, also straight cervical part of esophagus can be set, and straight cervical part of esophagus wall thickness or variable slope segment slope roof are thick general than the big 1.0mm～3.mm of docking steel pipe, flange and thickness of steel pipe center-aligned during butt welding.
This forged flange and steel pipe adopt butt weld, carry out the single or double bevel when the welding base metal wall thickness is big, determine the butt weld grade according to structure importance.The flange thickness of slab of this forged flange can be out of shape calculative determination according to cantilever slab, and the flanged plate wall thickness can be ignored the distortion of flanged plate during greater than 1.5 times of diameters of bolt, namely near rigid flange; With bolts, bolt can adopt 6.8 grades, 8.8 grades and 10.9 grades, and high-strength bolt tightens by certain pretightning force.This forged flange is forging, the machine-shaping that becomes more meticulous, and need heat-treat after the moulding and reduce inner residual stress; When temperature is low and butt welding of steel tube need carry out hyperthermic treatment.
The advantage of this forging hubbed flange is:
(1) hubbed flange has one section straight cervical part of esophagus and becomes the slope section, make the stressed coordination of flange, the structure more reasonable, improve and do not have stress performance and the coupling stiffness that adds stiffening flange, if the coupling stiffness of hubbed flange reasonable in design adds stiffening flange and has between the stiffening flange of adding between nothing, remedy to a certain extent not have and add the low defective of stiffening flange coupling stiffness, so the structural behaviour of this flange is very reliable;
(2) forge the hubbed flange connection and need not to weld ribbed stiffener, butt weld can be adopted mechanical welding, so both can solve the hard work that adds the manual welding of stiffening flange ribbed stiffener, improves make efficiency and mechanical efficiency.Simultaneously, should be with the neck welding neckflange is a kind of flange preferably-steel pipe Connecting format.
(3) compare with rigid flange, the fusion length of hub welding neckflange only is 20% of a rigid flange, and obviously reduces along with the increase of steel pipe caliber, and the fusion length of stiffening rib is about bipassage ring 4 times to fusion length, and the stiffening rib weld seam all adopts manual welding, and labor intensity is higher.
Description of drawings
Accompanying drawing 1 is the schematic representation that the straight cervical part of esophagus of the outer clivia band of inner slope forges hubbed flange.
Fig. 2 is that the outer clivia of inner slope forges hubbed flange.
Fig. 3 is that the straight cervical part of esophagus of the outer straight cornice of inner slope forges hubbed flange.
Fig. 4 is that the outer straight wall of inner slope forges hubbed flange.
Embodiment
This forging hubbed flange directly is forged into the flange study by steel billet, forms through machined then, and heat-treats the elimination residual stress, and steel can adopt the existing steel grades both domestic and external such as Q235, Q345, Q390, Q420, Q460; Adopt butt weld to be connected with waiting caliber steel pipe, when thickness of steel pipe, flange welding place wall thickness are big, should offer groove according to welding process requirement; The flange docking of steel pipe is with bolts, and bolt can adopt 6.8 grades, 8.8 grades and 10.9 grades, and high-strength bolt tightens by certain pretightning force.
Claims (6)
1. forging band neck (hub) bump joint that is used for steel-tube construction, forged flange is connected with steel pipe by one girth joint; Forge band neck (hub) flange and comprise flanged plate, variable slope segment, straight cervical part of esophagus and hoop bolt hole.The variable slope segment of this flange is take inner slope as main, and outer slope is big even be the right angle; Can arrange or not establish straight cervical part of esophagus in variable slope segment, straight cervical part of esophagus is conducive to guarantee that weldquality and weldquality detect.
2. should forge as claimed in claim 1 hubbed flange with the variable slope segment of variable cross-section, compare flexible flange and have better coupling stiffness, variable slope segment inner slope section angle is that 8 °～20 °, an outer slope section angle are 0 °～10 °, outer slope section can adopt straight wall, dwindle bolt circle diameter (B.C.D.) as far as possible, guarantee the flanged plate more reasonable stress; Domatic and flanged plate, straight cervical part of esophagus and variable slope segment hinged place arrange the chamfering of 1.0mm～2.0mm, reduce stress and concentrate, and improve the fatigue strength of flange under dynamic load.
3. straight cervical part of esophagus can be set as this forging flange as described in claims 1 becoming a section end, slope, also straight cervical part of esophagus can be set, straight cervical part of esophagus wall thickness or the sloping roof of change slope section are thick general than the big 1.0mm～3.mm of butt joint steel pipe, flange and thickness of steel pipe center-aligned during butt welding.
4. as described in claims 1, should forge flange and steel pipe employing butt weld, when the welding base metal wall thickness is big, carry out the single or double groove opening, determine the butt weld grade according to structure significance.
5. the flange thickness of slab of this forged flange can be out of shape calculative determination according to cantilever slab as claimed in claim 1, and the flanged plate wall thickness can be ignored the distortion of flanged plate during greater than 1.5 times of diameters of bolt, namely near rigid flange; With bolts, bolt can adopt 6.8 grades, 8.8 grades and 10.9 grades, and high-strength bolt tightens by certain pretightning force.
6. this forged flange is forging, the machine-shaping that becomes more meticulous as claimed in claim 1, need heat-treat after the moulding and reduce inner residual stress; When temperature is low and butt welding of steel tube need carry out hyperthermic treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101437347A CN102213270A (en) | 2010-04-12 | 2010-04-12 | Inner slope type forged hubbed flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101437347A CN102213270A (en) | 2010-04-12 | 2010-04-12 | Inner slope type forged hubbed flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102213270A true CN102213270A (en) | 2011-10-12 |
Family
ID=44744720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101437347A Pending CN102213270A (en) | 2010-04-12 | 2010-04-12 | Inner slope type forged hubbed flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102213270A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1840948A (en) * | 2005-03-30 | 2006-10-04 | 钱乐中 | Composite steel pipe with flange and manufacturing method thereof |
| CN1880825A (en) * | 2005-06-13 | 2006-12-20 | 甘国工 | Pipe end flange of steel-frame reinforced composite plastic pipe and method for fabricating same |
| CN2881275Y (en) * | 2006-02-27 | 2007-03-21 | 周安虎 | Connecting flange of thin wall metal pipe |
| CN201121784Y (en) * | 2007-11-07 | 2008-09-24 | 天津渤天化工有限责任公司 | Flange dish |
| CN101338841A (en) * | 2008-06-10 | 2009-01-07 | 聂国安 | Dripping-proof flange |
| CN201310696Y (en) * | 2008-10-15 | 2009-09-16 | 常州市武进第二法兰锻造有限公司 | Jacket flange |
-
2010
- 2010-04-12 CN CN2010101437347A patent/CN102213270A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1840948A (en) * | 2005-03-30 | 2006-10-04 | 钱乐中 | Composite steel pipe with flange and manufacturing method thereof |
| CN1880825A (en) * | 2005-06-13 | 2006-12-20 | 甘国工 | Pipe end flange of steel-frame reinforced composite plastic pipe and method for fabricating same |
| CN2881275Y (en) * | 2006-02-27 | 2007-03-21 | 周安虎 | Connecting flange of thin wall metal pipe |
| CN201121784Y (en) * | 2007-11-07 | 2008-09-24 | 天津渤天化工有限责任公司 | Flange dish |
| CN101338841A (en) * | 2008-06-10 | 2009-01-07 | 聂国安 | Dripping-proof flange |
| CN201310696Y (en) * | 2008-10-15 | 2009-09-16 | 常州市武进第二法兰锻造有限公司 | Jacket flange |
Non-Patent Citations (2)
| Title |
|---|
| 化学工业部设备设计技术中心站: "《化工设备标准手册 化工设备零部件 第二卷》", 31 January 1996, article "环连接面带颈对焊钢制管法兰", pages: 1 - 40-41 * |
| 黄振仁等: "《过程装备成套技术设计指南》", 31 January 2003, article "长颈对焊法兰", pages: 19 - 20 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106703830B (en) | A kind of shield duct piece lining joint construction with limit function | |
| CN103806543B (en) | A kind of Steel Tube Joint | |
| CN105986620A (en) | Aluminum alloy welding hollow sphere node | |
| JP2019512628A (en) | Support structure used for wind turbines | |
| CN201474083U (en) | Novel steel-concrete combined panel node | |
| CN110671279B (en) | Reverse balance flange connection node and manufacturing method and application thereof | |
| JP5690746B2 (en) | Tension bar to support the crane boom | |
| CN205776731U (en) | Welded hollow ball node | |
| CN102213270A (en) | Inner slope type forged hubbed flange | |
| CN209025320U (en) | A kind of dowel for building | |
| CN108951859B (en) | Building steel structure composite node adopting CrNiMn high-alloy welding material and cast-weld structure | |
| CN205480156U (en) | Connection structure is cuted to high strength tongue and groove | |
| CN211286301U (en) | Steel bar cone sleeve connecting piece | |
| CN209260925U (en) | Hemispherical flanged joint steel truss connecting node | |
| CN201567683U (en) | Side-sway resistant end face tightening temporary connecting joint structure | |
| CN207176937U (en) | A kind of assembled space nodes applied to aluminium alloy aperture structure | |
| JP2012517392A (en) | Tensile rod for supporting crane boom | |
| CN207583874U (en) | Dismantled and assembled shaft coupling | |
| CN103031977B (en) | High-strength flexible hubbed flange structure | |
| CN204879127U (en) | Integral corrugated metal of flange pipe and culvert pipe | |
| CN220182610U (en) | Roof hanging foundation connection node structure | |
| CN210947137U (en) | Bolt ball rod piece | |
| CN107090917A (en) | A kind of assembled space nodes applied to aluminium alloy aperture structure | |
| CN212885949U (en) | High-strength aluminum dock copper combined jig | |
| CN220792481U (en) | Bimetal build-up welding corrosion-resistant branch pipe table |
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 |
Application publication date: 20111012 |