CN209162147U - A kind of cold rolled reinforcing bar annealing device - Google Patents
A kind of cold rolled reinforcing bar annealing device Download PDFInfo
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- CN209162147U CN209162147U CN201822149397.7U CN201822149397U CN209162147U CN 209162147 U CN209162147 U CN 209162147U CN 201822149397 U CN201822149397 U CN 201822149397U CN 209162147 U CN209162147 U CN 209162147U
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- reinforcing bar
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Abstract
A kind of cold rolled reinforcing bar annealing device, belong to the hot field of reinforcing bar, Equipment for Heating Processing includes gradually heating portion, fast cooling portion and natural cooling portion, gradually heating portion is made of multiple heat risers, fast cooling portion is made of one or more cooling devices, multiple heat risers are helical form medium-frequency heating coil, medium-frequency heating coil two sides are provided with insulation board, guide roller device is provided between multiple heat risers, the rolling axle of guide roller is hollow shaft, flowing has cooling medium in hollow shaft, reinforcing bar successively passes through heating portion, fast cooling portion and natural cooling portion, reinforcing bar interior tissue can be improved, eliminate internal stress.Using the utility model, the tensile strength of reinforcing bar can be improved, guarantee the elongation of reinforcing bar, ideal Appearance color can be obtained, improve anti-oxidant, resistance to corrosion, further increase the bearing capacity and anti-crack ability of armored concrete.
Description
Technical field
The utility model relates to a kind of Equipment for Heating Processing, in particular to a kind of cold rolled reinforcing bar annealing device belongs to reinforcing bar
Field of Heat-treatment.
Background technique
There is biggish stress after cold-rolling treatment, needing to be heat-treated could eliminate reinforcing bar, still, if heat treatment
Temperature is too low to be difficult to thoroughly eliminate internal stress, if heat treatment temperature is too high significantly to change internal organizational structure, it
Before, there is a patent of Patent No. 201220562616.4, a kind of " reinforcing bar burning optimization on line device " its structure of the patent application
Including rack and the high frequency heating coil being fixed on the rack, the bringing-up section of high frequency heating coil is curved in scroll by hollow pipe
It is curved at solenoid, be mainly used for tempering in this Equipment for Heating Processing, it is difficult to change the comprehensive mechanical property of reinforcing bar, it is special
It is not the tensile strength for being difficult to ensure reinforcing bar.
In recent years, with the development of China's high-speed rail industry, used in the road high-speed rail overpass Shang Wuza solid concrete roabed structure
Ribbed Bar has special requirement to tensile strength and elongation, in order to meet these to the special of tensile strength and elongation
It is required that needing to research and develop special Equipment for Heating Processing and technique can be only achieved the requirement of high-speed rail construction.
The electric heater unit of different frequencies has different use during heat treatment, the reinforcing bar constantly transmitted rearward
How tensile strength is improved in transmit process, guarantees high ductility, is the key link of cold rolled reinforcing bar heat treatment, it is however generally that,
It is heat-treated using high frequency coil, after reinforcing bar heating, high-frequency quenching depth generally in surface 0.2-2mm, is widely applied
In surface hardening, if handled using heating in medium frequency, effective depth of quenching is 2-10mm, and the transmission depth of electric current of intermediate frequency is than high
Frequency depth is big, and heat treatment time, reinforcing bar have certain relationship by speed and heating, cooling speed, according to high-speed rail
Overpass has carried out corresponding heat treatment to reinforcing bar characteristic requirements and has researched and developed.
Summary of the invention
Due to conventional highfrequency induction coil and Medium frequency induction coil and heating time, reinforcing bar transmission speed, heat treatment time,
The rate of temperature fall etc. of heating up when heat treatment has close relationship, in order to meet high-speed rail overpass without how steel in road solid concrete roabed structure
Tensile strength and the elongation percentage requirement of muscle, the utility model provide a kind of cold rolled reinforcing bar annealing device, and the purpose is to improve
Reinforcing bar interior tissue eliminates reinforcing bar internal stress, improves the tensile strength of reinforcing bar, guarantees the elongation of reinforcing bar, it is mixed to improve reinforcing bar
Coagulate the bearing capacity and anti-crack ability of soil.
The technical solution of the utility model is: a kind of cold rolled reinforcing bar annealing device, including rack and is fixed on the rack
Helical form load coil, the annealing device includes gradually heating portion, fast cooling portion and natural cooling portion, by
Step heating portion is made of multiple heat risers, and fast cooling portion is made of one or more cooling devices, and multiple heat risers are
Helical form mid-frequency induction heating coil, mid-frequency induction heating coil two sides are provided with insulation board, are arranged between multiple heat risers
There is guide roller device, guide roller device includes upper and lower guide roller, and the rolling axle of upper and lower guide roller is hollow shaft, empty
Flowing has a cooling medium in mandrel, and reinforcing bar is successively by multiple leading by multiple mid-frequency induction heating hub of a spools and above and below
To between the roller and intermediate position in fast cooling portion；
Further, the helical form mid-frequency induction heating coil is connected separately with respective controller, multiple from front to back
The heating temperature of helical form mid-frequency induction heating coil is different, before being greater than of the heating temperature of the mid-frequency induction heating coil of back
The heating temperature of side mid-frequency induction heating coil, gradually the heating temperature in heating portion is between 150 DEG C -650 DEG C；
Further, minister's degree 5≤L≤15 meter of gradually heating up, the rolling concrete steel bar transmission speed are 0.2-1.5m/S；
Further, the fast cooling portion is provided with the cooling air duct along reinforcing bar direction of transfer, is arranged on cooling air duct
There is blower blowing mouth, blower is made of one or more；
Further, the cooling medium flowed in the hollow shaft is coolant liquid or cooling gas；
Further, the natural cooling minister degree is at 5 meters or more；
Further, the multiple heat riser is respectively arranged with respective insulation cover, is provided with articulated shaft on rear side of insulation cover,
Insulation cover open side is provided with switch knob；
Further, the temperature difference between multiple heat risers is between 20-80 DEG C；
Further, the guide roller device includes upper guide roller and lower steering roll wheel, and lower steering roll wheel passes through hollow
Axis and bearing are arranged on guiding wheeling supporting frame, and guiding wheeling supporting frame top two sides are provided with two opposite cunnings of pair of sliding slot
Frid slidably connects the both ends of sliding panel between coulisse, the hollow shaft and bearing of guide roller is provided on sliding panel,
Two coulisse upper ends are provided with pressure plate, and holddown spring is provided between pressure plate and sliding panel；
Further, the cooling air duct includes interior air duct and outer air duct, and end face is that sealing connects between interior air duct and outer air duct
Junction, interior air duct both ends are air outlet, are provided with multiple air inlet holes on interior air duct periphery, the size of air inlet hole is blown with apart from blower
Air port distance is directly proportional.
The stress of reinforcing bar inside formation after cold rolling molding can be eliminated by the way that gradually heating portion is arranged；By being added using intermediate frequency
Heat can reduce the ferrite number of reinforcing bar, and plastic deformation can be optimized by controlling ferrite therein；By the way that fast cooling is arranged
Portion can form quenching layer in rebar surface, can further improve depth of hardening, Jin Erti in particular with mid-frequency induction heating
The yield strength and tensile strength of high reinforcing bar；By the way that natural cooling portion is arranged, the tissue of reinforcing bar center portion can be made to be converted into iron element
Body and pearlitic structrure guarantee the elongation of reinforcing bar；By air duct and outer air duct in being arranged in cooling air duct, interior air duct and outer
End face seal connects between air duct, and from the outlet air of interior air duct both ends, multiple air inlet holes, the size of air inlet hole are arranged on interior air duct periphery
It is directly proportional to apart from blower blowing mouth distance, uniform cooling wind can be formed on the surface of reinforcing bar, uniform surface can be obtained
Layer is quenched, to improve the tensile strength of reinforcing bar, especially improves the tensile strength of rebar surface；By the way that longer nature is arranged
Cooling end, can residual stress inside successive elimination reinforcing bar, the mechanical property of reinforcing steel bar.Using the utility model, can mention
The tensile strength of high reinforcing bar guarantees the elongation of reinforcing bar, and ideal Appearance color can be obtained, and improves anti-oxidant, resistance to corrosion,
Further increase the bearing capacity and anti-crack ability of armored concrete.
Detailed description of the invention
The overall structure diagram of this Equipment for Heating Processing of Fig. 1.
The side structure enlarged drawing of Fig. 2 guide roller device.
The schematic diagram of the section structure in Fig. 3 fast cooling portion.
Specific embodiment
The specific technical solution of the utility model is described in detail referring to the drawings.In the technical scheme, institute
The front or back stated, for being the direction of advance by reinforcing bar, that is to say, that followed by towards natural cooling portion direction one
Side, front refer to towards gradually heating portion side.
Numbering in the drawing represents: 10- gradually heating portion, 12- mid-frequency induction heating coil, 12a- insulation board, 13- heat preservation
Cover, 14- medium-frequency generator, 15- conducting wire, the upper guide roller of 16-, 17a- lower steering roll wheel one, 17b- lower steering roll wheel two, 18a-
Cooling tube one, 18b- cooling tube two, 19- guiding wheeling supporting frame, 20- fast cooling portion, the outer air duct of 21a-, air duct, 22- in 21b-
Blower, 23- air inlet hole, 24- are tightly connected face, 30- natural cooling portion, and 40- reinforcing bar, 41- pressure plate, 42- sliding panel, 42a- are sliding
Dynamic slot, 44a- coulisse one, 44b- coulisse two.
The technical solution of the utility model is a kind of cold rolled reinforcing bar annealing device, and Fig. 1 is the entirety of this Equipment for Heating Processing
Structural schematic diagram.Fig. 2 is the side structure enlarged drawing of guide roller device.Annealing device includes rack and is fixed on rack
On helical form heating coil, the annealing device includes gradually heating portion 10, fast cooling portion 20 and natural cooling portion
30, gradually the setting of heating portion 10 is gradually heating up on platform 11, is made of more than two multiple heat risers, fast cooling portion 20 by
One or more cooling devices are constituted, and multiple heat risers are helical form mid-frequency induction heating coil 12, helical form Medium frequency induction
12 two sides of heating coil are respectively arranged with insulation board 12a, and 12 electric current of helical form mid-frequency induction heating coil is by medium-frequency generator 14
Supply, 15 be the conducting wire among helical form mid-frequency induction heating coil 12 and medium-frequency generator 14, between multiple heat risers
It gradually is additionally provided with guide roller device on heating platform 11, guide roller 16 and lower steering roll are provided in guide roller device
Wheel, the rolling axle of multiple guide rollers are hollow shaft, and flowing has cooling medium in hollow shaft, and reinforcing bar 40 passes sequentially through multiple intermediate frequencies
Between 12 center of the load coil and multiple guide rollers up and down and intermediate position in fast cooling portion 20.
The guide roller includes two 17b of upper guide roller 16 and one 17a of lower steering roll wheel and lower steering roll wheel, under lead
To the setting of the hollow shaft of two 17b of one 17a of roller and lower steering roll wheel on guiding wheeling supporting frame 19, it is oriented on wheeling supporting frame 19
Portion two sides are provided with two opposite coulisses of pair of sliding slot 42a, respectively two 44b of one 44a of coulisse and coulisse, under lead
Diameter to two 17b of one 17a of roller and lower steering roll wheel is equal, highly on the same horizontal plane, upper 16 He of guide roller
There is reinforcing bar 40 to pass through between two 17b of one 17a of lower steering roll wheel and lower steering roll wheel, guide roller device top is provided with compression
Plate 41, the hollow shaft and bearing of upper guide roller 16 are arranged on sliding panel 42, and sliding board ends are slidably arranged in both sides and set
In the sliding groove 42a of two 44b of one 44a of coulisse and coulisse set, compression bullet is provided between sliding panel 42 and pressure plate 41
Spring 43.
In the present embodiment, the cooling medium flowed in hollow shaft is cooling water, and from side, cooling water is from pressure plate
Enter on the connector of upper setting, be connected between pressure plate and the hollow shaft of two 17b of lower steering roll wheel using one 18a of cooling tube,
It is connected between upper guide roller 16 and the hollow shaft of one 17a of lower steering roll wheel using two 18b of cooling tube, one 18a of cooling tube and cold
But two 18b of pipe is pressure hose, and cooling water forms the circuit of a flowing.
The mid-frequency induction heating coil 12 is separately connected respective controller, is controlled by respective controller, from forward direction
The heating temperature of multiple helical form mid-frequency induction heating coils 12 is different afterwards, the heating temperature of the mid-frequency induction heating coil 12 of back
The heating temperature greater than front mid-frequency induction heating coil 12 of degree, heating temperature is between 150 DEG C -650 DEG C.
In the present embodiment, it is provided with 12 helical form mid-frequency induction heating coils 12 or heat riser, helical form altogether
A guide roller device is provided among mid-frequency induction heating coil 12 or heat riser, the guide roller device of two sides has altogether
It is provided with 13 guide roller devices.
For 10 length of gradually heating portion within the scope of 5≤L≤15 meter, 40 transmission speed of rolling concrete steel bar is 0.2-
1.5m/S.In the present embodiment, using the transmission speed of 0.8 m/S.
The fast cooling portion 20 is provided with the cooling air duct along 40 direction of transfer of reinforcing bar, is provided with wind on cooling air duct
Machine 22, blower 22 are made of one or more, in the present embodiment, a blower 22 are provided with, from centre to two cross air blastings.
The cooling medium flowed in the hollow shaft is that cooling is utilized in the present embodiment in coolant liquid or cooling gas
Water is cooled down, and can prevent expanded by heating between the axis of guide roller and bearing from can not rotate.
30 length of natural cooling portion is at 5 meters or more, in the present embodiment, using 10 meters of natural cooling minister
Degree.
The multiple heat riser is respectively arranged with respective insulation cover 13, is provided with articulated shaft on rear side of insulation cover 13, protects
Temperature 13 open sides of cover are provided with switch knob.
Temperature difference between multiple heat risers is between 20-80 DEG C, and gradually temperature gradually rises from front to back in heating portion.
The schematic diagram of the section structure in Fig. 3 fast cooling portion 20.The cooling air duct includes interior air duct 21b and outer air duct 21a,
End face is sealed connection face 24 between interior air duct 21b and outer air duct 21a, and the both ends interior air duct 21b are air outlet, outside interior air duct 21b
Multiple air inlet holes 23 are provided on week, the size of air inlet hole 23 is directly proportional to apart from 22 blowing mouth distance of blower.
By setting, gradually heating portion 10 can eliminate the stress formed inside reinforcing bar 40 after cold rolling forms to the utility model,
Internal organizational structure is adjusted, by utilizing heating in medium frequency, the ferrite number of reinforcing bar 40 is reduced, controls ferrite therein
Plastic deformation can be optimized；By the way that fast cooling portion 20 is arranged, 40 surface hardening layer of reinforcing bar can be increased, in particular with Medium frequency induction
Heating can further improve depth of hardening, and then improve the yield strength and tensile strength of reinforcing bar 40, cold by setting nature
But portion 30 can make the tissue of 40 center portion of reinforcing bar be converted into ferrite and pearlite tissue, guarantee the elongation of reinforcing bar 40；Pass through
Interior air duct 21b and outer air duct 21a will be set in cooling air duct, end face seal connects between interior air duct 21b and outer air duct 21a, interior
The both ends air duct 21b are air outlet, are provided with multiple air inlet holes 23 on the periphery interior air duct 21b, the size of air inlet hole 23 with apart from wind
22 blowing mouth distance of machine is directly proportional, can form uniform cooling wind on the surface of reinforcing bar 40, uniform surface hardening can be obtained
Layer especially improves the tensile strength on 40 surface of reinforcing bar to improve the tensile strength of reinforcing bar 40, by the way that longer nature is arranged
Cooling end 30, can residual stress inside successive elimination reinforcing bar 40, the mechanical property of reinforcing steel bar 40.It is practical new using this
The tensile strength of reinforcing bar can be improved in type, guarantees the elongation of reinforcing bar, and ideal Appearance color can be obtained, and improves anti-oxidant, anti-corruption
Erosion ability further increases the bearing capacity and anti-crack ability of armored concrete.
Claims (10)
1. a kind of cold rolled reinforcing bar annealing device, special including rack and the helical form load coil being fixed on the rack
Sign is: the annealing device includes gradually heating portion, fast cooling portion and natural cooling portion, and gradually heating portion is by multiple
Heat riser composition, fast cooling portion are made of one or more cooling devices, and multiple heat risers are helical form Medium frequency induction
Heating coil, mid-frequency induction heating coil two sides are provided with insulation board, guide roller device are provided between multiple heat risers,
Guide roller device includes upper and lower guide roller, and the rolling axle of upper and lower guide roller is hollow shaft, there is cold flowing in hollow shaft
But medium, reinforcing bar is successively by by between multiple mid-frequency induction heating hub of a spools and multiple upper and lower guide rollers and fast
The intermediate position in prompt drop temperature portion.
2. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the helical form Medium frequency induction
Heating coil is connected separately with respective controller, and the heating temperature of multiple helical form mid-frequency induction heating coils is not from front to back
Together, the heating temperature greater than front mid-frequency induction heating coil of the heating temperature of the mid-frequency induction heating coil of back, gradually
The heating temperature in heating portion is between 150 DEG C -650 DEG C.
3. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the minister's degree that gradually heats up
5≤L≤15 meter, the rolling concrete steel bar transmission speed are 0.2-1.5m/S.
4. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the fast cooling portion setting
There is the cooling air duct along reinforcing bar direction of transfer, is provided with blower blowing mouth on cooling air duct, blower is made of one or more.
5. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: flowed in the hollow shaft
Cooling medium is coolant liquid or cooling gas.
6. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the natural cooling minister degree
At 5 meters or more.
7. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the multiple heat riser point
It is not provided with respective insulation cover, is provided with articulated shaft on rear side of insulation cover, insulation cover open side is provided with switch knob.
8. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: between multiple heat risers
Temperature difference is between 20-80 DEG C.
9. a kind of cold rolled reinforcing bar annealing device according to claim 1, it is characterised in that: the guide roller device packet
Guide roller and lower steering roll wheel are included, lower steering roll wheel is arranged on guiding wheeling supporting frame by hollow shaft and bearing, guiding
Wheeling supporting frame top two sides are provided with two opposite coulisses of pair of sliding slot, slidably connect sliding panel between coulisse
Both ends are provided with the hollow shaft and bearing of guide roller on sliding panel, and two coulisse upper ends are provided with pressure plate, pressure plate
Holddown spring is provided between sliding panel.
10. a kind of cold rolled reinforcing bar annealing device according to claim 4, it is characterised in that: the cooling air duct includes
Interior air duct and outer air duct, end face is sealed connection face between interior air duct and outer air duct, and interior air duct both ends are air outlet, outside interior air duct
Multiple air inlet holes are provided on week, the size of air inlet hole is directly proportional to apart from blower blowing mouth distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822149397.7U CN209162147U (en) | 2018-12-21 | 2018-12-21 | A kind of cold rolled reinforcing bar annealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201822149397.7U CN209162147U (en) | 2018-12-21 | 2018-12-21 | A kind of cold rolled reinforcing bar annealing device |
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| CN209162147U true CN209162147U (en) | 2019-07-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080681A (en) * | 2020-09-07 | 2020-12-15 | 青岛仨保建筑材料有限公司 | Production process method of prestressed combined simply-supported beam steel bar for bridge construction |
| CN114774668A (en) * | 2022-04-19 | 2022-07-22 | 河南省鼎鼎实业有限公司 | Ribbed steel bar short circuit heat treatment equipment and heating power supply thereof |
| CN115254509A (en) * | 2022-08-03 | 2022-11-01 | 河南省鼎鼎实业有限公司 | Reinforcing steel bar production line with formed corrosion-resistant layer and preparation method of corrosion-resistant layer |
-
2018
- 2018-12-21 CN CN201822149397.7U patent/CN209162147U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080681A (en) * | 2020-09-07 | 2020-12-15 | 青岛仨保建筑材料有限公司 | Production process method of prestressed combined simply-supported beam steel bar for bridge construction |
| CN114774668A (en) * | 2022-04-19 | 2022-07-22 | 河南省鼎鼎实业有限公司 | Ribbed steel bar short circuit heat treatment equipment and heating power supply thereof |
| CN115254509A (en) * | 2022-08-03 | 2022-11-01 | 河南省鼎鼎实业有限公司 | Reinforcing steel bar production line with formed corrosion-resistant layer and preparation method of corrosion-resistant layer |
| CN115254509B (en) * | 2022-08-03 | 2023-04-21 | 河南省鼎鼎实业有限公司 | Reinforcing steel bar production line with corrosion-resistant layer and preparation method of corrosion-resistant layer |
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