CN103540737A - Rotation method for steel pipe in stepping type reheating furnace - Google Patents
Rotation method for steel pipe in stepping type reheating furnace Download PDFInfo
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- CN103540737A CN103540737A CN201310449188.3A CN201310449188A CN103540737A CN 103540737 A CN103540737 A CN 103540737A CN 201310449188 A CN201310449188 A CN 201310449188A CN 103540737 A CN103540737 A CN 103540737A
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Abstract
The invention discloses a rotation method for a steel pipe in a stepping type reheating furnace. The rotation method comprises the following steps: a certain dislocation is formed between a fixed beam tooth and a corresponding movable beam tooth in the stepping type reheating furnace; in the lifting process of a movable beam, inclined planes of the movable beam teeth are contacted with the steel pipe, and the steel pipe rolls to the roots of the movable beam teeth under the effect of self gravity to finish natural rotation in the ascending process; after the movable beam carries the steel pipe to move horizontally, the steel plate falls down to the inclined planes of the fixed beam teeth in the falling-back process of the movable beam, and the steel pipe rolls to the roots of the fixed beam teeth under the effect of the self gravity to finish the natural rotation in the descending process. According to the rotation method for the steel pipe in the stepping type reheating furnace, the problem that the temperatures of the upper and lower faces of the steel pipe in the furnace are different is solved by rotating the steel pipe in the furnace, so that the temperatures of the upper and lower faces of the steel pipe are the same, the steel structure of the steel pipe is improved, the quality and the performance of a product are improved and the degradation of the product is reduced.
Description
Technical field
The present invention relates to a kind of stepped start-stop system reheating furnace, specifically, relate to a kind of steel pipe rotary method in stepped start-stop system reheating furnace.
Background technology
The φ 120mm of special steel branch office of NeiMenggu BaoGang GangLian Co., Ltd production line stepped start-stop system reheating furnace is the visual plant that improves the quality and performance of product.The effect of stepped start-stop system reheating furnace: second heat treatment and the online normalizing of cooperation.Normalizing drops to 600 ℃ below-550 ℃, and more than reheating 850 degree, object is crystal grain thinning, improves steel construction, improves performance (mechanical property, intensity, hardness).
As shown in Figure 1, for going up the fundamental diagram of type of heating in prior art.Determine beam 12 and be used for carrying and need steel pipe, moving beam 13 is used for mobile steel pipe, and the upper surface of steel pipe is directly by burner 11 heating that jets out flames, and the bottom of steel pipe is that radiation formula heats.
As shown in Figure 2, be the fundamental diagram of prior art Central Plains control mode.The tooth alignment of determining beam 12 and moving beam 13 of walking beam, determines beam tooth 121 and moving beam tooth 131 consistencies from top to bottom, when moving beam 13 action, determines beam tooth 121 and moving beam tooth 131 and aligns when rising and land, and after moving beam 13 lifts steel pipe, moves forward abreast.
The problem that prior art exists: because steel pipe upper surface is directly accepted flame heating, the bottom of steel pipe is radiation formula heating, and steel pipe is translation forward, such type of heating and control mode cause the interior steel pipe of stove top and bottom temperature different, and temperature head is about 100 degree left and right (being called male and female face).On steel pipe, surface temperature reaches processing requirement, and lower surface temperature does not also reach processing requirement, if make steel pipe underlaying surface temperature reach technological temperature requirement, steel pipe upper surface will burning.Cause like this steel tube performance differ to, easily produce substandard product.
Summary of the invention
Technical problem solved by the invention is to provide a kind of steel pipe rotary method in stepped start-stop system reheating furnace, has solved the different problem of steel pipe top and bottom temperature in stove, makes steel pipe top and bottom temperature consistent.
Technical scheme is as follows:
A steel pipe rotary method in reheating furnace, comprising:
Make to determine to exist necessarily and misplace between beam tooth and moving beam tooth in stepped start-stop system reheating furnace, when moving beam in the process rising, allow the inclined-plane of beam tooth contact steel pipe, steel pipe tumbles the root of moving beam tooth under self gravitation effect, completes steel pipe naturally rotating at uphill process;
Described moving joist support carries after steel pipe translation, in the process falling after rise, allows steel pipe drop on the described inclined-plane of determine beam tooth at described moving beam, and steel pipe tumbles the described root of determining beam tooth under self gravitation effect, completes the rotation naturally of described moving beam decline process.
Further: set unoperated position, stepping position and the position detection point of moving beam, make described determine beam tooth and described moving beam tooth described moving beam rise or decline before have certain dislocation;
Described moving beam starts to rise, and after the first displacement sensor detects described moving beam, controller sends reduced speed signal, and described moving beam first slows down when being about to arrive rising parking stall; The inclined-plane contact of described moving beam tooth is parked in the described steel pipe of determining on beam, described steel pipe rolls under the ramp effect of self gravitation and described moving beam tooth, when rising to described rising parking stall, described moving beam stops, described steel pipe is rolled to the root of described moving beam tooth, completes steel pipe at the natural rotation process of uphill process;
Described moving beam starts to advance, described moving joist support carries steel pipe and moves forward, after second displacement sensor detects described moving beam, described controller sends reduced speed signal, controls described moving beam and first slows down be about to arriving while advancing parking stall, behind the parking stall of advancing, stops described in described moving beam arrives;
Described moving beam starts to decline, and after triple motion sensor detects described moving beam, described controller sends reduced speed signal, controls described moving beam and first slows down when being about to arrive decline parking stall; The described inclined-plane contact of determining beam tooth is parked in the described steel pipe on described moving beam, described steel pipe is at self gravitation and describedly determine to roll under beam tooth ramp effect, when dropping to described decline parking stall, described moving beam stops, described steel pipe is rolled to the described root of determining beam tooth, completes naturally rotating of decline process;
Described moving beam starts to retreat, after the 4th displacement sensor detects described moving beam, described controller sends reduced speed signal, control described moving beam and first slow down when being about to arrive back parking position, after described moving beam arrives back parking position, stop, complete a circulation.
Further: described controller is selected programmable logic controller.
Technique effect of the present invention comprises:
The present invention, by making steel pipe rotary in stove solve temperature different problem in steel pipe top and bottom in stove, makes steel pipe top and bottom temperature consistent, thereby has improved the steel construction of steel pipe, improves the quality and performance of product, has reduced the degradation of product.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of upper type of heating in prior art;
Fig. 2 is the fundamental diagram of walking beam under control mode of the prior art;
Fig. 3 is the fundamental diagram of walking beam under the control mode in the present invention;
Fig. 4 is the moving beam control principle drawing of walking beam in the present invention.
Embodiment
Want to make the interior steel pipe of stove above and below temperature the same, just must allow the interior steel pipe of reheating furnace rotate in walking beam moving process, steel pipe above and below can be directly heated, guarantee steel pipe top and bottom temperature is consistent like this.
As shown in Figure 3, be the fundamental diagram of control mode in the present invention.
The present invention makes to determine have certain dislocation between beam tooth 121 and moving beam tooth 131, when moving beam 13 in the process rising, allow the inclined-plane of beam tooth 131 contact steel pipe, steel pipe can tumble the root of moving beam tooth 131 under self gravitation effect, completes steel pipe naturally rotating at uphill process; Moving beam 13 is carrying after steel pipe translation, in the process falling after rise, allows steel pipe drop on and determines on the inclined-plane of beam tooth 121 at moving beam 13, and steel pipe tumbles the root of determining beam tooth 121 under self gravitation effect, completes naturally rotating of decline process.
As shown in Figure 4, be the moving beam control principle drawing of walking beam in the present invention.In order to reach the spinfunction of steel pipe, must to realize moving beam 13 is carried out to accurate vehicle positioning stop, just can complete steel pipe rotary function.
By the unoperated position setting to moving beam 13, stepping position setting, physical location, detect to realize control brake beam 13 in the accurate action of rising, advance, decline, retreat Four processes.Programmable logic controller (PLC) is selected S3-317PLC.
1, unoperated position is set.
Reset the unoperated position that advances, back parking position, rising unoperated position and the decline unoperated position of moving beam 13, make moving beam tooth 131 and determine the relative position of beam tooth 121 before rising and declining and stagger.
2, stepping position is set.
Set a translation distance of moving beam 13.
3, physical location detects and sets.
Because moving beam tooth 131 and the relative position of determining beam tooth 121 change, so will reset for the position detection point of moving beam tooth 131, moving beam 13 first slows down while being about to advance to parking stall, then the parking that puts in place; Moving beam 13 also first slows down while retreating into parking stall, then the parking that puts in place.The moving lifting of beam 13 and the physical location of translation detect by displacement sensor.
Below working process of the present invention is described further.
Step 1: set unoperated position, stepping position, the position detection point of moving beam 13, make to determine beam tooth 121 and moving beam tooth 131 had certain dislocation before moving beam 13 rises or declines;
Step 2: moving beam 13 starts to rise, when displacement sensor detects after moving beam 13, PLC sends reduced speed signal, and moving beam 13 first slows down when being about to arrive rising parking stall; The inclined-plane contact of moving beam tooth 131 is parked in the steel pipe of determining on beam 12, steel pipe rolls under self gravitation and moving beam tooth 131 ramp effect, when moving beam 13 rises to rising parking stall, stop, steel pipe is rolled to the root of moving beam tooth 131, completes steel pipe at the natural rotation process of uphill process;
Step 3: moving beam 13 starts to advance, moving beam 13 is carrying steel pipe and is moving forward, and when displacement sensor detects after moving beam 13, PLC sends reduced speed signal, control brake beam 13 first slows down be about to arriving while advancing parking stall, after moving beam 13 arrives the parking stall of advancing, stops;
Step 3: moving beam 13 starts to decline, when displacement sensor detects after moving beam 13, PLC sends reduced speed signal, and control brake beam 13 first slows down when being about to arrive decline parking stall; The inclined-plane contact of determining beam tooth 121 is parked in the steel pipe on moving beam 13, steel pipe is at self gravitation and determine to roll under beam tooth 121 ramp effect, when moving beam 13 drops to decline parking stall, stop, steel pipe is rolled to the root of determining beam tooth 121, completes naturally rotating of decline process;
Step 4: moving beam 13 starts to retreat, when displacement sensor detects after moving beam 13, PLC sends reduced speed signal, and control brake beam 13 first slows down when being about to arrive back parking position, after moving beam 13 arrives back parking position, stops, and completes a circulation.
Claims (3)
1. a steel pipe rotary method in stepped start-stop system reheating furnace, comprising:
Make to determine to exist necessarily and misplace between beam tooth and moving beam tooth in stepped start-stop system reheating furnace, when moving beam in the process rising, allow the inclined-plane of beam tooth contact steel pipe, steel pipe tumbles the root of moving beam tooth under self gravitation effect, completes steel pipe naturally rotating at uphill process;
Described moving joist support carries after steel pipe translation, in the process falling after rise, allows steel pipe drop on the described inclined-plane of determine beam tooth at described moving beam, and steel pipe tumbles the described root of determining beam tooth under self gravitation effect, completes the rotation naturally of described moving beam decline process.
2. steel pipe rotary method in stepped start-stop system reheating furnace as claimed in claim 1, is characterized in that:
Set unoperated position, stepping position and the position detection point of moving beam, make described determine beam tooth and described moving beam tooth described moving beam rise or decline before have certain dislocation;
Described moving beam starts to rise, and after the first displacement sensor detects described moving beam, controller sends reduced speed signal, and described moving beam first slows down when being about to arrive rising parking stall; The inclined-plane contact of described moving beam tooth is parked in the described steel pipe of determining on beam, described steel pipe rolls under the ramp effect of self gravitation and described moving beam tooth, when rising to described rising parking stall, described moving beam stops, described steel pipe is rolled to the root of described moving beam tooth, completes steel pipe at the natural rotation process of uphill process;
Described moving beam starts to advance, described moving joist support carries steel pipe and moves forward, after second displacement sensor detects described moving beam, described controller sends reduced speed signal, controls described moving beam and first slows down be about to arriving while advancing parking stall, behind the parking stall of advancing, stops described in described moving beam arrives;
Described moving beam starts to decline, and after triple motion sensor detects described moving beam, described controller sends reduced speed signal, controls described moving beam and first slows down when being about to arrive decline parking stall; The described inclined-plane contact of determining beam tooth is parked in the described steel pipe on described moving beam, described steel pipe is at self gravitation and describedly determine to roll under beam tooth ramp effect, when dropping to described decline parking stall, described moving beam stops, described steel pipe is rolled to the described root of determining beam tooth, completes naturally rotating of decline process;
Described moving beam starts to retreat, after the 4th displacement sensor detects described moving beam, described controller sends reduced speed signal, control described moving beam and first slow down when being about to arrive back parking position, after described moving beam arrives back parking position, stop, complete a circulation.
3. steel pipe rotary method in stepped start-stop system reheating furnace as claimed in claim 1, is characterized in that: described controller is selected programmable logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449188.3A CN103540737B (en) | 2013-09-24 | 2013-09-24 | Rotation method for steel pipe in stepping type reheating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449188.3A CN103540737B (en) | 2013-09-24 | 2013-09-24 | Rotation method for steel pipe in stepping type reheating furnace |
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| Publication Number | Publication Date |
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| CN103540737A true CN103540737A (en) | 2014-01-29 |
| CN103540737B CN103540737B (en) | 2015-04-22 |
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| CN201310449188.3A Withdrawn - After Issue CN103540737B (en) | 2013-09-24 | 2013-09-24 | Rotation method for steel pipe in stepping type reheating furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054998A (en) * | 2017-03-07 | 2017-08-18 | 中冶华天工程技术有限公司 | A kind of transfer system of cylindricality material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989232U (en) * | 2012-11-20 | 2013-06-12 | 天津商业大学 | Stepping type pipe heating furnace |
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2013
- 2013-09-24 CN CN201310449188.3A patent/CN103540737B/en not_active Withdrawn - After Issue
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989232U (en) * | 2012-11-20 | 2013-06-12 | 天津商业大学 | Stepping type pipe heating furnace |
Non-Patent Citations (1)
| Title |
|---|
| 丁杰等: ""液压比例流量控制技术在步进式加热炉上的应用"", 《液压与气动》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054998A (en) * | 2017-03-07 | 2017-08-18 | 中冶华天工程技术有限公司 | A kind of transfer system of cylindricality material |
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| CN103540737B (en) | 2015-04-22 |
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