CN106807807A - Channel-section steel forming method - Google Patents
Channel-section steel forming method Download PDFInfo
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- CN106807807A CN106807807A CN201510847710.2A CN201510847710A CN106807807A CN 106807807 A CN106807807 A CN 106807807A CN 201510847710 A CN201510847710 A CN 201510847710A CN 106807807 A CN106807807 A CN 106807807A
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Abstract
The present invention proposes a kind of channel-section steel moulding process, belongs to ferrous materials rolling and forming technology field.Channel-section steel moulding process of the present invention includes：Strip conveying charging → smoothing → micro- → local heating → dovetail edge forming → cooling → be rolled into → alignment → blanking step by step.The advantage of the invention is that employ local heating during using arrowband steel making channel-section steel and the technique of continuous rolling shaping can obtain the channel-section steel with dovetail trough rim step by step, and being synchronized with the movement for strip conveying and cutting agency can be realized.Channel-section steel energy saving is manufactured using present invention process, production efficiency is high, and the channel-section steel shape of production, dimensional accuracy are high, and bearing capacity is strong.
Description
Technical field
The present invention relates to a kind of channel-section steel forming method, belong to ferrous materials rolling material molding technology field.
Background technology
Built-in fitting is to install the component of (burying) in concealed work in advance, is the component and fitting disposed when structure is poured into a mould, and for building overlap joint during superstructure by laying bricks or stones, the installation for being beneficial to field engineering Equipment Foundations is fixed.In traditional built-in fitting that building field is commonly used, generally frame structure framework is characterized in that metal structure effective rate of utilization is low, and weight is big, installs cumbersome.In recent years, with the continuous improvement of design level and building ability, especially elementary item construction field proposes requirement higher to built-in fitting to building field.Channel-section steel is the shaped steel for gradually being used in construction and installation field in recent years, and C U-steels during anchor connection frequently with conventional certain specification are used as floor, cooperation T-bolt is connected.
The manufacturing process of cold-rolled steel is because using the cold rolling cold bending process of single multiple tracks, and trough rim is identical with strip raw material thickness of slab, causes that the fit-up gap between built-in fitting T-bolt and connecting bottom board is big, and steel sole plate low intensity is easy to crack, is normally only used for the anchoring under static load conditions.Chinese patent (application number：200910214310.2) a kind of cold-bending molding technology and production line for producing big width U-type groove steel is provided in, it using multiple tracks clod wash be sheet material occur plastic deformation and obtain U-type groove steel, what it was obtained is universal U-type groove steel, is not suitable for building curtain wall or the fastening or grappling in other fields.Chinese patent (Authorization Notice No.：CN 201320570Y) in provide a kind of U-type groove steel cold bending molding equipment, its BROAD SUMMARY is to devise the U-type groove steel that can produce different length, width, no flanging at the U-type groove steel tank produced mouthful.The forming process of hot-rolled steel is the operation of rolling under a heating condition, heating can improve the plasticity of sheet material, dovetail groove edge forming is easy, shaping and deformation position stress concentration is small, and groove intensity is high, and notch flange has swallowtail shape feature, fit-up gap between T-bolt and connecting bottom board is small, vibration is small, and bonding strength is high, it is adaptable to the anchor connection especially under the conditions of dynamic loading of various situations.Such as HALFEN companies of Germany using hot-rolled steel as connecting bottom board, the hot-rolled steel channel built-in fitting of exploitation is successfully applied to various building fields.Chinese patent (Granted publication：CN 2621093Y) in provide a kind of channel-section steel of hot rolling continuous hot bending, it describes the planform of channel-section steel in detail, the detailed machining process of hot rolling, hot bending to channel-section steel is not described, but dovetail trough rim is carried at the hot-rolled steel channel notch being related in its invention, C channel-section steel intensity is easily guaranteed that, is very suitable for the fastening and grappling of each building field.But hot-rolled steel process needs heating, cause big energy consumption, high cost, operating environment poor.Cold rolling or cold bending process process need not be heated, but the plastic deformation degree of material is big, and the stress concentration of channel-section steel is big, and be difficult to obtain dovetail trough rim.So, not by hot rolling, the deformation of forming process material plasticity is uniform, low cost for research and development, and it is significantly problem that can be readily available the channel-section steel moulding process with dovetail trough rim.
The content of the invention
Present invention aim to overcome that the deficiencies in the prior art, invent and a kind of the channel-section steel with dovetail trough rim to be prepared using local heating and the step by step method of roll-forming.High, the process is simple using the inventive method production channel-section steel production efficiency, the channel steel special bearing capacity of acquisition is strong, and service life is high, and low production cost.
Another goal of the invention of the invention is to provide a kind of high cost heat working technological process for not using hot rolling or hot investment casting, using local heating and the method for multiple tracks roll-forming, facilitates and produces the channel steel special with dovetail trough rim cheaply.
The present invention is achieved in the following ways：
The moulding process flow process of channel steel special of the present invention is：Strip conveys charging → smoothing → minute-pressure → local heating → dovetail edge forming → cooling → cold roll forming → alignment → blanking step by step.The positioning and spacing by a pair disk roller control of lying on one's side of strip conveying charging；Smoothing is completed by two pairs of upper and lower edger roll disk rollers of disk roller, and the gap between upper and lower disk roller can be adjustable according to the requirement of the size of the thickness of strip and channel-section steel.Minute-pressure operation is completed by a pair of disk rollers, and strip side occurs small plastic deformation after strip minute-pressure.Strip enters localized heating zones after minute-pressure, and strip obtains dovetail trough rim after a pair of thermoforming disk roller roll-ins afterwards.Enter refrigerating work procedure after strip thermoforming, using originally water cooling, be beneficial to the precision and size of channel-section steel after the follow-up multiple tracks continuous rolling of guarantee.In cold roll forming operation step by step the U-type groove of strip and the interior bending and molding of dovetail trough rim are completed using at least 12 road roll-ins；The road roll-in of wherein at least 7 makes the strip with dovetail side fade to bent angle by plane, then is changed into 90 ° of U-type grooves；The road roll-in of wherein at least 5 makes curved in the U-type groove both sides with dovetail side to fade to groove.The channel-section steel of shaping is through at least 2 road roll-in alignments subsequently into blanking procedure.The charging rate synchronization of cutting agency gait of march and strip in blanking procedure, can realize online blanking according to the length requirement of channel-section steel.
Present invention employs local heating and multiple tracks, roll-forming prepares channel-section steel step by step, and the professional channel-section steel dimensional accuracy of preparation is easily guaranteed that, appearance impulse- free robustness.
The present invention uses the interior bending and molding of at least U-type groove of 12 road roll-in strips and dovetail trough rim in cold roll forming operation step by step.Bent angle is faded to by plane by least 7 road roll-in strips longitudinal direction, then is changed into 90 ° of U-type grooves；Gap change between disk roller upper roller, the change of lower roll edge angle and shape and edge-on disk roller ensures the parallel longitudinal angle of strip by 0 °~90 ° of gradual change.The U-type groove that preceding processes are obtained is faded into groove by least 5 road roll-ins again, the gap between the change of disk roller upper roller, lower roll shape and gap and edge-on disk roller positions to realize that bending is changed into groove in U-type groove both sides.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Attached ribbon steel width being manufactured using present invention process not fix, being changed according to the requirement of the dimensions of channel steel special, the change of its size will require that corresponding adjustment is done in the gap between the relevant device central roll size of wheel of present invention process and disk roller.Subsidiary steel can be ordered from steel manufacturer, also commercially available standard strip voluntarily blanking.Strip of being anticipated in order to ensure the automation mechanized operation of channel-section steel manufacturing process, during charging is spacing through a pair rollers of lying on one's side.Smoothed by two pairs of straightener rolls by strip 2 after roller limiting roll of lying on one's side.After strip smoothing (minute-pressure is carried out by a pair of disk rollers.Upper roll wheel is driving wheel during minute-pressure, and lower roll wheel is from driven pulley；Smaller acute angle is provided with upper roll wheel roll surface both side edges so that a small acute angle bevel is produced at upper roll wheel roll surface lateral border, strip side occurs small plastic deformation after minute-pressure.Strip carries out local heating after minute-pressure, and strip is passed through to thermoforming disk roller roll-in thermoforming afterwards；Dovetail trough rim is obtained after thermoforming.To ensure the final molding precision and size of channel-section steel, refrigerating work procedure is entered after thermoforming, then obtain final channel-section steel through multiple tracks chilling roller is molded.Refrigerating work procedure uses water pipe fountain originally water cooling.After cooling, by multiple tracks roll-in, the strip with dovetail side clod wash U-type groove and groove step by step.Finally, the channel-section steel of shaping meets the channel-section steel of shape specification requirement by least road alignment process to obtain.Afterwards, the length requirement according to channel-section steel in blanking procedure realizes online blanking.
Upper roller in above-mentioned each road manufacturing procedure independently exists with lower roll, although all deserve to be called roller and lower roll, but the structure of each pair roller is different.
Certainly, described above is not limitation of the present invention, the present invention is also not limited to the example above, those skilled in the art, in essential scope of the invention, the change made, remodeling, addition is replaced, should all belong to the present invention it should be understood by those skilled in the art that, the present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment and specification, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent thereof.
Claims (3)
1. a kind of channel-section steel forming method, it is characterized in that：Technological process is：Strip conveys charging → smoothing → minute-pressure → local heating → dovetail edge forming → cooling → cold roll forming → alignment → blanking step by step；
Wherein：After minute-pressure operation faint plastic deformation is produced in band steel edge both sides；Through the dovetail edge forming operation after local heating operation, the dovetail trough rim at channel-section steel notch is obtained；Then cold roll forming operation will curve channel-section steel by the strip longitudinal direction roll bending with dovetail side into U-shaped trough with straight angle in the top of U-shaped trough with straight angle and sidepiece step by step.
2. channel-section steel forming method according to claim 1, it is characterized in that：The forming process strip gait of march of channel-section steel and cutting agency gait of march synchronization.
3. channel-section steel forming method according to claim 1 and 2, it is characterized in that：Online blanking can be realized according to the length requirement of channel-section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847710.2A CN106807807A (en) | 2015-11-30 | 2015-11-30 | Channel-section steel forming method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510847710.2A CN106807807A (en) | 2015-11-30 | 2015-11-30 | Channel-section steel forming method |
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| CN106807807A true CN106807807A (en) | 2017-06-09 |
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| CN201510847710.2A Pending CN106807807A (en) | 2015-11-30 | 2015-11-30 | Channel-section steel forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229886A (en) * | 2019-12-11 | 2020-06-05 | 江苏顺力冷弯型钢实业有限公司 | High-sealing-performance steel sheet pile forming method |
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- 2015-11-30 CN CN201510847710.2A patent/CN106807807A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229886A (en) * | 2019-12-11 | 2020-06-05 | 江苏顺力冷弯型钢实业有限公司 | High-sealing-performance steel sheet pile forming method |
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Application publication date: 20170609 |