CN107876564A - A kind of ferrite rolling control device and its control technique - Google Patents
A kind of ferrite rolling control device and its control technique Download PDFInfo
- Publication number
- CN107876564A CN107876564A CN201711350672.5A CN201711350672A CN107876564A CN 107876564 A CN107876564 A CN 107876564A CN 201711350672 A CN201711350672 A CN 201711350672A CN 107876564 A CN107876564 A CN 107876564A
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- China
- Prior art keywords
- heating
- coal gas
- water cooling
- gas burner
- technique coal
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- 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
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000005096 rolling process Methods 0.000 title claims abstract description 48
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 239000003034 coal gas Substances 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 229910001566 austenite Inorganic materials 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/04—Ferritic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a kind of ferrite rolling control device and its control technique, belongs to metallurgy industry hot-strip production equipment technology.Technical scheme is：Include roughing mills（1）, tunnel heating（2）, finish rolling descaling mill（3）And mm finishing mill unit（4）, in roughing mills（1）And mm finishing mill unit（4）Between be sequentially provided with tunnel heating（2）With finish rolling descaling mill（3）.Slab passes through roughing mills（1）Enter tunnel heating after roughing（2）；Pass through water cooling furnace roller（23）The upper heating Two-cuff Technique coal gas burner of top（24）With the lower heating Two-cuff Technique coal gas burner of lower section（25）The upper and lower surface of slab is heated simultaneously, heating-up temperature is 900 950 DEG C；Slab after heating passes through finish rolling descaling mill（3）Enter mm finishing mill unit after de-scaling（4）Carry out finish rolling.The beneficial effects of the invention are as follows：It is ferritic structure when being able to ensure that and entering mm finishing mill unit, and the ferrite grain size after phase transformation is uniform.
Description
Technical field
The present invention relates to a kind of ferrite rolling control device and its control technique, belongs to the production of metallurgy industry hot-strip
Equipment technical field.
Background technology
At present, in the production process of hot-strip, how lower production cost is utilized, rolls out band of good performance
Steel is the Main way that each production line technology promotes.Ferrite rolling has extraordinary cost advantage and market application foreground,
The production technology scheme that each strip production line all more optimizes in exploration.Currently the main technique scheme of ferrite rolling is：
（1）Then the heated stove heat of slab is come out of the stove to austenitic area and carries out roughing and finish rolling；
（2）Slab completes the operation of rolling of austenitic area in roughing mills；
（3）Middle base is cooled to ferrite and austenitic duplex area through cooling during rolling area；
（4）Middle base after cooling during rolling enters mm finishing mill unit rolling.
In such scheme, it is exactly cooling procedure of the middle base in cooling during rolling section to be most difficult to control.Because middle base has one
Fixed thickness, during using water cooling is cooled down, it is difficult to carry out the uniformity of core and surface temperature, and use water cooling
Technical cooling speed, austenite can not be completely converted into ferrite, so, the middle base after water cooling is in austenite and iron
The mixed crystal state of ferritic, and because cooldown rate is too fast, the ferrite grain size after phase transformation is not of uniform size.Containing mixed grain structure
For middle base after finishing mill rolling, also there is non-uniform phenomenon in final grain size, causes final performance uneven.
The content of the invention
It is an object of the present invention to provide a kind of ferrite rolling control device and its control technique, in roughing mills and finishing mill
Tunnel heating is set between group, makes slab have time enough to carry out samming, the section temperature difference is reduced, realizes slab austenite
To ferritic transformation, it is ensured that into being ferritic structure during mm finishing mill unit, solve problem present in background technology.
The technical scheme is that：
A kind of ferrite rolling control device, comprising roughing mills, tunnel heating, finish rolling descaling mill and mm finishing mill unit,
Tunnel heating and finish rolling descaling mill are sequentially provided between roughing mills and mm finishing mill unit.
The tunnel heating includes water cooling furnace roller, upper heating Two-cuff Technique coal gas burner, lower heating Two-cuff Technique coal gas and burnt
Mouth and body of heater, body of heater is interior to be provided with multiple horizontally disposed water cooling furnace rollers, and the top of water cooling furnace roller is provided with upper heating Two-cuff Technique coal gas
Burner, the lower section of water cooling furnace roller are provided with lower heating Two-cuff Technique coal gas burner.
The body of heater includes furnace roof, furnace wall and furnace bottom, and water cooling furnace roller is located at the middle part in body of heater, upper heating Two-cuff Technique coal gas
Burner and lower heating Two-cuff Technique coal gas burner are separately fixed on the furnace wall above water cooling furnace roller and below water cooling furnace roller.
The upper heating Two-cuff Technique coal gas burner and lower heating Two-cuff Technique coal gas burner are located at the furnace wall of body of heater both sides respectively
On.
The water cooling furnace roller is rotatablely connected with transmission mechanism.
The top of the body of heater longitudinal section is rectangle structure, and bottom is inverted trapezoidal structure.
The bottom of the body of heater exports provided with iron scale.
A kind of ferrite rolling control technique, using above-mentioned limited device, comprise the steps of：
1. slab is by entering tunnel heating after roughing mills roughing；
2. by the upper heating Two-cuff Technique coal gas burner above water cooling furnace roller and the lower heating Two-cuff Technique coal gas burner of lower section to plate
The upper and lower surface of base is heated simultaneously, and heating-up temperature is 900-950 DEG C；
3. the slab after heating enters mm finishing mill unit after finish rolling descaling mill de-scaling carries out finish rolling.
Above-mentioned ferrite rolling control technique, the temperature that slab goes out tunnel heating are 850-900 DEG C.
Slab utilizes upper heating Two-cuff Technique coal gas burner and lower heating Two-cuff Technique coal gas burner pair in tunnel heating
The upper and lower surface of slab is heated simultaneously, and heating-up temperature is maintained in the range of 950-900 DEG C, in such a temperature environment
It is interior, it can mutually become ferrite completely by the austenite structure of roughing mills heavy reduction rolling, and fire box temperature is uniform,
Slab time enough can be given to carry out samming, reduce the section temperature difference.In addition, slab can keep one in tunnel heating
The fixed time, time enough is provided to phase transformation, ensure that austenite structure mutually becomes ferrite completely, so, slab is come out of the stove
After enter back into mm finishing mill unit and be achieved that ferrite rolling.
The beneficial effects of the invention are as follows：Tunnel heating is set between roughing mills and mm finishing mill unit, to slab two
Side is heated simultaneously, makes slab have time enough to carry out samming, is reduced the section temperature difference, is realized slab austenite to ferrite
Transformation, it is ensured that into being ferritic structure during mm finishing mill unit, and the ferrite grain size after phase transformation is uniform.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is tunnel heating longitudinal sectional view of the present invention；
Fig. 3 is tunnel heating transverse sectional view of the present invention；
In figure：Roughing mills 1, tunnel heating 2, finish rolling descaling mill 3, mm finishing mill unit 4, furnace roof 21, furnace wall 22, water cooling furnace roller
23rd, upper heating Two-cuff Technique coal gas burner 24, lower heating Two-cuff Technique coal gas burner 25, converter body support steelframe 26, furnace bottom 27, body of heater
28。
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
Referring to the drawings 1, a kind of ferrite rolling control device, roughing mills 1, tunnel heating 2, finish rolling de-scaling are included
Machine 3 and mm finishing mill unit 4, tunnel heating 2 and finish rolling descaling mill 3 are sequentially provided between roughing mills 1 and mm finishing mill unit 4.
In the present embodiment, referring to the drawings 2,3, the tunnel heating 2 includes water cooling furnace roller 23, upper heating Two-cuff Technique
Coal gas burner 24, lower heating Two-cuff Technique coal gas burner 25 and body of heater 28, body of heater 28 include furnace roof 21, furnace wall 22 and furnace bottom 27, stove
The top of the longitudinal section of body 28 is rectangle structure, and bottom is inverted trapezoidal structure, and the bottom of body of heater 28 exports provided with iron scale, stove
Middle part in body 28 is provided with multiple horizontally disposed water cooling furnace rollers 23, and the top of water cooling furnace roller 23 is provided with upper heating Two-cuff Technique coal gas
Burner 24, the lower section of water cooling furnace roller 23 are provided with lower heating Two-cuff Technique coal gas burner 25, and water cooling furnace roller 23 rotates with transmission mechanism to be connected
Connect, upper heating Two-cuff Technique coal gas burner 24 and lower heating Two-cuff Technique coal gas burner 25 are respectively provided at the top of water cooling furnace roller 23 and water cooling
The lower section of furnace roller 23, lower heating Two-cuff Technique coal gas burner 25 are fixed on the furnace wall of the transmission side of water cooling furnace roller 23, upper heating Two-cuff Technique
Coal gas burner 24 is fixed on the furnace wall of fore side
Upper heating Two-cuff Technique coal gas burner 24 and lower heating Two-cuff Technique coal gas burner 25 are carried using coal gas, air Two-cuff Technique mode
High thermal efficiency.
A kind of ferrite rolling control technique, using above-mentioned limited device, comprise the steps of：
1. slab is by entering tunnel heating 2 after the roughing of roughing mills 1；
2. pass through the upper heating Two-cuff Technique coal gas burner 24 of the top of water cooling furnace roller 23 and the lower heating Two-cuff Technique coal gas burner of lower section
The upper and lower surface of 25 pairs of slabs heats simultaneously, and heating-up temperature is 900-950 DEG C；
3. the slab after heating enters mm finishing mill unit 4 after the de-scaling of finish rolling descaling mill 3 carries out finish rolling.
Using tunnel heating 2 by carrying out concurrent heating to slab upper and lower surface, and burnt by upper heating Two-cuff Technique coal gas
The unlatching burning of the pulse combustion technology discontinuity of mouth 24 and lower heating Two-cuff Technique coal gas burner 25 and heat accumulation function, pulse-combustion
Order be ranked up using automatic control system according to certain rule, the temperature in body of heater is maintained at 900-950 DEG C of scope
It is interior, and ensure the tapping temperature of slab at 850-900 DEG C., can by the pulse-combustion temperature control technique of centre tunnel formula heating furnace 2
To ensure the temperature homogeneity of slab core and surface, and in such a temperature environment, by the big pressure of roughing mills
The austenite structure of amount rolling can mutually become ferrite completely, and fire box temperature is uniform, can give slab time enough
Samming is carried out, reduces the section temperature difference.In addition, slab can be kept for the regular hour in tunnel heating, provided to phase transformation
Time enough, ensure that phase transformation is completed.
Claims (9)
1. a kind of ferrite rolling control device, it is characterised in that include roughing mills（1）, tunnel heating（2）, finish rolling removes
Squama machine（3）And mm finishing mill unit（4）, in roughing mills（1）And mm finishing mill unit（4）Between be sequentially provided with tunnel heating（2）With
Finish rolling descaling mill（3）.
A kind of 2. ferrite rolling control device according to claim 1, it is characterised in that the tunnel heating（2）
Include water cooling furnace roller（23）, it is upper heating Two-cuff Technique coal gas burner（24）, it is lower heating Two-cuff Technique coal gas burner（25）And body of heater（28）,
Body of heater（28）It is interior to be provided with multiple horizontally disposed water cooling furnace rollers（23）, water cooling furnace roller（23）Top be provided with it is upper heating Two-cuff Technique coal
Gas burner（24）, water cooling furnace roller（23）Lower section be provided with it is lower heating Two-cuff Technique coal gas burner（25）.
A kind of 3. ferrite rolling control device according to claim 2, it is characterised in that the body of heater（28）Include stove
Top（21）, furnace wall（22）And furnace bottom（27）, water cooling furnace roller（23）It is located at body of heater（28）Interior middle part, upper heating Two-cuff Technique coal gas burn
Mouth（24）With lower heating Two-cuff Technique coal gas burner（25）It is separately fixed at water cooling furnace roller（23）Top and water cooling furnace roller（23）Lower section
Furnace wall（22）On.
A kind of 4. ferrite rolling control device according to claim 3, it is characterised in that the upper heating Two-cuff Technique coal
Gas burner（24）With lower heating Two-cuff Technique coal gas burner（25）It is located at body of heater respectively（28）The furnace wall of both sides（22）On.
A kind of 5. ferrite rolling control device according to Claims 2 or 3, it is characterised in that the water cooling furnace roller（23）
It is rotatablely connected with transmission mechanism.
A kind of 6. ferrite rolling control device according to claim 2, it is characterised in that the body of heater（28）Longitudinal section
Top be rectangle structure, bottom is inverted trapezoidal structure.
A kind of 7. ferrite rolling control device according to claim 6, it is characterised in that the body of heater（28）Bottom
Exported provided with iron scale.
A kind of 8. ferrite rolling control technique, it is characterised in that：The device limited using claim 1-7, comprising following
Step：
1. slab passes through roughing mills（1）Enter tunnel heating after roughing（2）；
2. pass through water cooling furnace roller（23）The upper heating Two-cuff Technique coal gas burner of top（24）With the lower heating Two-cuff Technique coal gas of lower section
Burner（25）The upper and lower surface of slab is heated simultaneously, heating-up temperature is 900-950 DEG C；
3. the slab after heating passes through finish rolling descaling mill（3）Enter mm finishing mill unit after de-scaling（4）Carry out finish rolling.
A kind of 9. ferrite rolling control technique according to claim 8, it is characterised in that：Slab goes out tunnel heating
（2）Temperature be 850-900 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350672.5A CN107876564A (en) | 2017-12-15 | 2017-12-15 | A kind of ferrite rolling control device and its control technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350672.5A CN107876564A (en) | 2017-12-15 | 2017-12-15 | A kind of ferrite rolling control device and its control technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107876564A true CN107876564A (en) | 2018-04-06 |
Family
ID=61771564
Family Applications (1)
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| CN201711350672.5A Pending CN107876564A (en) | 2017-12-15 | 2017-12-15 | A kind of ferrite rolling control device and its control technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560493A (en) * | 2019-09-10 | 2019-12-13 | 福建鼎信科技有限公司 | Heating device for intermediate blank |
| CN114210739A (en) * | 2021-11-25 | 2022-03-22 | 北京首钢股份有限公司 | Method and device for controlling temperature difference of two transverse sides of strip steel |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150554A (en) * | 1995-09-06 | 1997-05-28 | Sms舒路曼-斯玛公司 | Hot strip production plant for rolling thin rolled strip |
| CN1195584A (en) * | 1997-04-10 | 1998-10-14 | 丹尼利机械设备股份公司 | Rolling method for thin flat products and relative rolling line |
| CN1195585A (en) * | 1997-02-21 | 1998-10-14 | 克瓦洛金属连铸有限公司 | Continuous metal manufacturing method and apparatus therefor |
| CN1281394A (en) * | 1997-12-08 | 2001-01-24 | 克里斯塔尔公司 | Process and device for producing ferritically rolled steel strip |
| CN1586752A (en) * | 2004-08-03 | 2005-03-02 | 唐山钢铁股份有限公司 | Method for producing thin plate blank continuous casting and continuous rolling low carbon steel ferrite |
| CN201136886Y (en) * | 2007-10-25 | 2008-10-22 | 中冶南方(武汉)威仕工业炉有限公司 | Nonoxidizing heating segment of band steel bright annealing furnace |
| CN201193237Y (en) * | 2008-04-03 | 2009-02-11 | 内蒙古一机集团大地石油机械有限责任公司 | Tunnel type heat treating furnace for sucker rod heated by natural gas |
| WO2013039272A1 (en) * | 2011-09-16 | 2013-03-21 | 주식회사 포스코 | Thin cold-rolled steel plate having high strength and high formability, and preparation method thereof |
| CN203582903U (en) * | 2013-10-30 | 2014-05-07 | 孙晶 | Malleable cast iron heat accumulating type tunnel annealing furnace production line |
| CN205893345U (en) * | 2016-08-12 | 2017-01-18 | 江苏保捷精锻有限公司 | Heating temperature adjustable multi -use bearing heat treatment furnace |
| CN106583465A (en) * | 2016-11-18 | 2017-04-26 | 首钢京唐钢铁联合有限责任公司 | Method and device for increasing hot rolling speed of ferrite |
| CN207577126U (en) * | 2017-12-15 | 2018-07-06 | 唐山全丰薄板有限公司 | A kind of ferrite rolling control system |
-
2017
- 2017-12-15 CN CN201711350672.5A patent/CN107876564A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150554A (en) * | 1995-09-06 | 1997-05-28 | Sms舒路曼-斯玛公司 | Hot strip production plant for rolling thin rolled strip |
| CN1195585A (en) * | 1997-02-21 | 1998-10-14 | 克瓦洛金属连铸有限公司 | Continuous metal manufacturing method and apparatus therefor |
| CN1195584A (en) * | 1997-04-10 | 1998-10-14 | 丹尼利机械设备股份公司 | Rolling method for thin flat products and relative rolling line |
| CN1281394A (en) * | 1997-12-08 | 2001-01-24 | 克里斯塔尔公司 | Process and device for producing ferritically rolled steel strip |
| CN1586752A (en) * | 2004-08-03 | 2005-03-02 | 唐山钢铁股份有限公司 | Method for producing thin plate blank continuous casting and continuous rolling low carbon steel ferrite |
| CN201136886Y (en) * | 2007-10-25 | 2008-10-22 | 中冶南方(武汉)威仕工业炉有限公司 | Nonoxidizing heating segment of band steel bright annealing furnace |
| CN201193237Y (en) * | 2008-04-03 | 2009-02-11 | 内蒙古一机集团大地石油机械有限责任公司 | Tunnel type heat treating furnace for sucker rod heated by natural gas |
| WO2013039272A1 (en) * | 2011-09-16 | 2013-03-21 | 주식회사 포스코 | Thin cold-rolled steel plate having high strength and high formability, and preparation method thereof |
| CN203582903U (en) * | 2013-10-30 | 2014-05-07 | 孙晶 | Malleable cast iron heat accumulating type tunnel annealing furnace production line |
| CN205893345U (en) * | 2016-08-12 | 2017-01-18 | 江苏保捷精锻有限公司 | Heating temperature adjustable multi -use bearing heat treatment furnace |
| CN106583465A (en) * | 2016-11-18 | 2017-04-26 | 首钢京唐钢铁联合有限责任公司 | Method and device for increasing hot rolling speed of ferrite |
| CN207577126U (en) * | 2017-12-15 | 2018-07-06 | 唐山全丰薄板有限公司 | A kind of ferrite rolling control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560493A (en) * | 2019-09-10 | 2019-12-13 | 福建鼎信科技有限公司 | Heating device for intermediate blank |
| CN114210739A (en) * | 2021-11-25 | 2022-03-22 | 北京首钢股份有限公司 | Method and device for controlling temperature difference of two transverse sides of strip steel |
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Application publication date: 20180406 |