CN107723425A - A kind of high-efficiency vacuum annealing furnace - Google Patents
A kind of high-efficiency vacuum annealing furnace Download PDFInfo
- Publication number
- CN107723425A CN107723425A CN201710857608.XA CN201710857608A CN107723425A CN 107723425 A CN107723425 A CN 107723425A CN 201710857608 A CN201710857608 A CN 201710857608A CN 107723425 A CN107723425 A CN 107723425A
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- Prior art keywords
- bell
- inner bag
- bosh
- flange
- annealing furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to the technical field of annealing furnace, a kind of particularly high-efficiency vacuum annealing furnace, including：Bell, furnace shell, inner bag, heating element heater and furnace cover lifting mechanism, it is connected between bell and inner bag by bell flange and inner bag flange, the first bosh and the second bosh are set in bell flange and inner bag flange above and below sealing ring, the delivery port and water inlet of first bosh are all disposed within above bell flange, the water inlet and delivery port of second bosh are all disposed within below inner bag flange, and it is connected with circulating water in the first bosh and the second bosh, both sides carry out cooling down to sealing ring above and below sealing ring respectively, solves sealing ring easy aging under long-time high temperature, the problem of sealing effectiveness reduces improves the service life of sealing ring, it ensure that the sealing effectiveness of sealing ring, also provided safeguard for the heating effect of annealing furnace.
Description
Technical field
The present invention relates to the technical field of annealing furnace, a kind of particularly high-efficiency vacuum annealing furnace.
Background technology
In new material research and production process, how short annealing be improve one of material property it is vital
Link, fill the annealing of protective atmosphere especially for vacuumizing for the materials such as carbon steel, steel alloy, parcel, sintered metal product, adjust
The heating of matter, normalized treatment is used, and prior art uses common bell furnace or well formula oxidizing annealing stove more, and operating efficiency is low,
High energy consumption, oxidation occurs at high temperature for workpiece, and surface is easily formed oxide skin corrosion product；And use annealing furnace
Annealing of metal materials is carried out, when annealing is completed, in-furnace temperature is higher, and natural cooling was needed by the long period, influences to produce
Efficiency；, poor sealing be present, easily make oxygen in the glass fibre cotton sealing used between the bell and body of heater of other prior art
Into body of heater, annealing effect is influenceed.
Chinese patent CN 201420628444.5, disclose a kind of well vacuum bright annealing furnace, operation side simple in construction
Just, in non-oxidation annealing, whole stove temperature uniformity is good, and annealing workpiece non-scale produces, can be quick after the completion of heating
Cooling, greatly improve production efficiency, service life length.But the sealing ring in this annealing furnace is easy under long-time high temperature
Aging so that sealing effectiveness reduces, and can still cause oxygen to enter body of heater, influence annealing effect.
The content of the invention
The technical problem to be solved in the present invention is：The easy aging under long-time high temperature for sealing ring, sealing effectiveness drop
The problem of low, the invention provides a kind of high-efficiency vacuum annealing furnace, set in the bell flange and inner bag flange above and below sealing ring
The first bosh and the second bosh are put, and circulating water is connected with the first bosh and the second bosh, respectively
Both sides carry out cooling down to sealing ring above and below sealing ring, ensure the sealing property of sealing ring, improve the use of sealing ring
In the life-span, the sealing effectiveness of sealing ring is ensure that, also provided safeguard for the heating effect of annealing furnace.
The technical solution adopted for the present invention to solve the technical problems is：A kind of high-efficiency vacuum annealing furnace, including：
Bell, the bell outside are extended with bell flange, are provided with the first T-slot at the top of the bell flange, described first is T-shaped
The first bosh is provided with the ledge of groove, the first cover plate, first cover plate are provided with above first bosh
It is fixedly connected by screw with the first T-slot, the water inlet and delivery port of first bosh extend through the first cover plate
Above to cover plate,
Furnace shell,
, there is gap in inner bag, the inner bag upper end, which has been wholely set, to be used for and bell between the inner bag inwall and bell outer wall
The inner bag flange that flange coordinates, the side coordinated with bell flange on the inner bag flange are provided with some annular grooves, the ring
It is provided with sealing ring in connected in star, the bottom of interior single flange is provided with the second T-slot, in the ledge of second T-slot
Provided with the second bosh, the second cover plate is provided with below second bosh, second cover plate passes through screw and the 2nd T
Type groove is fixedly connected, and the water inlet and delivery port of second bosh are extended to outside furnace shell through the second cover plate and furnace shell,
Heating element heater, the heating element heater are arranged between furnace shell and inner bag,
Furnace cover lifting mechanism, the furnace cover lifting mechanism include：Hydraulic cylinder, lifting shaft and connecting bracket, the hydraulic cylinder pass through
Support frame is fixedly connected with furnace shell, and the lifting shaft is fixedly connected with the movable end of hydraulic cylinder, and the elevating lever is externally provided with and it
The axle sleeve of slidable connection, the axle sleeve are fixedly connected with furnace shell, and described connecting bracket one end is fixedly connected with lifting shaft, another
End is fixedly connected with bell.
Specifically, the width of first bosh and the second bosh be more than between annular groove it is maximum away from
From.
Specifically, the liner at the bottom is end enclosure structure, and the liner at the bottom is provided with the cushion block coordinated with end enclosure structure.
Specifically, the inner bladder outer wall is suppressed with ripple.
Specifically, the bell is arch.
Specifically, some buckles are circumferentially fixedly connected with the bell, is circumferentially with and blocks on the bell flange
The neck that snap fit is closed.
Specifically, in addition to：Hot gas cycle component, the hot gas cycle component include：The circulated air being fixed on bell
Machine and heat exhausting pipe, the heat exhausting pipe are extended in bell through bell.
Specifically, the furnace shell inwall is provided with some ceramic washers.
Specifically, the furnace shell bottom is provided with heat-insulation layer, and the heat-insulation layer includes：The straight brick layer of diatomite layer, lightweight, fire resisting
Layer, the diatomite layer are layered on above vehicle frame, and the straight brick layer of lightweight is layered on above diatomite layer, and the lightweight directly turns layer by two
The straight brick of layer lightweight is staggeredly tiled, and the flame retardant coating is layered on above lightweight brickmaking layer, and the cushion block is located above flame retardant coating.
Specifically, the outer wall of the bell is smaller 6-10mm than the internal diameter of inner bag.
The beneficial effects of the invention are as follows：
The invention provides a kind of high-efficiency vacuum annealing furnace, first is set in the bell flange and inner bag flange above and below sealing ring
Bosh and the second bosh, and circulating water is connected with the first bosh and the second bosh, respectively from sealing
Both sides carry out cooling down to circle to sealing ring up and down, ensure the sealing property of sealing ring, improve the service life of sealing ring, protect
The sealing effectiveness of sealing ring has been demonstrate,proved, has also been provided safeguard for the heating effect of annealing furnace.
The invention provides a kind of high-efficiency vacuum annealing furnace, in order to further improve sealing effectiveness, circumferentially consolidates on bell
Surely it is connected with some buckles, the neck for being circumferentially with and being clasped on bell flange, only needs buckle being buckled in card during use
Can is realized and compressed in groove, further ensures sealing effectiveness.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation of high-efficiency vacuum annealing furnace of the present invention；
Fig. 2 is part A partial enlarged drawing schematic diagram in Fig. 1；
Fig. 3 is the structural representation of heat-insulation layer；
In figure：1. bell, 2. bell flanges, 3. first T-slots, 4. first boshes, 5. first cover plates, 6. furnace shells, in 7.
Courage, 8. inner bag flanges, 81. annular grooves, 9. second T-slots, 10. second boshes, 11. second cover plates, 12. heating units
Part, 13. hydraulic cylinders, 14. lifting shafts, 15. connecting brackets, 16. support frames, 17. axle sleeves, 18. cushion blocks, 19. buckles, 20. necks,
21. circulating fan, 22. heat exhausting pipes, 23. ceramic washers, 24. diatomite layers, the straight brick layer of 25. lightweights, 26. flame retardant coatings.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As illustrated, the invention provides a kind of high-efficiency vacuum annealing furnace, including：
Bell 1, the outside of bell 1 are extended with bell flange 2, and the top of bell flange 2 is provided with the first T-slot 3, and the first T-slot 3 is dashed forward
Go out in part and be provided with the first bosh 4, be provided with the first cover plate 5 above the first bosh 4, the first cover plate 5 by screw and
First T-slot 3 is fixedly connected, and the water inlet and delivery port of the first bosh 4 are extended to above cover plate through the first cover plate 5,
Furnace shell 6, furnace shell 6 are welded by shaped steel and steel plate, and furnace shell 6 uses Q235（5mm）Steel plate welding is rolled into drum-shaped, outside
Channel-section steel welds mullion to strengthen intensity, and the liner body in furnace shell 6 uses fully fibrous structure, is entered from premium high-alumina needle punched blanket folded piece
It is fixed on after row precommpression on the inwall of furnace shell 6, treats that overall liner body decontrols compression blocks again after the completion of building, so can effectively prevents from serving as a contrast
The loosening of body, the heat-insulating property of furnace shell 6 is improved, save the energy, reduce production run cost.Whole fiber fireproof construction thermal shock
Stability is good, resistance to rapid heat cycle, and service life saves 30% or so than brick body furnace superintendent.Tieed up using the annealing furnace of this furnace shell 6
Repair very convenient, if being damaged because of mechanical collision, can be used as long as carrying out local repairing.
Inner bag 7, inner bag 7 are welded into cylindrical shape, the inwall of inner bag 7 and the outer wall of bell 1 by the stainless steel materials of 12mm thickness SUS 321
Between gap be present, the upper end of inner bag 7 is wholely set the inner bag flange 8 for coordinating with bell flange 2, on inner bag flange 8 with
The side that bell flange 2 coordinates is provided with some annular grooves 81, is provided with sealing ring in annular groove 81, sealing ring is preferably silica gel
Bar, the sealing between bell 1 and furnace shell 6 can be fully ensured that, the bottom of inner bag flange 8 is provided with the second T-slot 9, and second is T-shaped
The second bosh 10 is provided with the ledge of groove 9, the lower section of the second bosh 10 is provided with the second cover plate 11, the second cover plate 11
It is fixedly connected by screw with the second T-slot 9, the water inlet and delivery port of the second bosh 10 pass through the second cover plate 11 and stove
Shell 6 is extended to outside furnace shell 6,
Heating element heater 12, heating element heater 12 are arranged between furnace shell 6 and inner bag 7, and heating element heater 12 helps structure using advanced hang,
Radiation efficiency is high, enhances heat exchange in stove, improves furnace thermal efficiency, and extends the service life of electric heating element 12.Electricity
Thermal element 12 preferably using Shoudu Iron and Steel Co production 0Cr25Al5 resistive bands, is suspended on furnace wall fixture（Ceramic screw rod）On, installation, maintenance is all
It is very convenient.
The elevating mechanism of bell 1, the elevating mechanism of bell 1 include：Hydraulic cylinder 13, lifting shaft 14 and connecting bracket 15, hydraulic cylinder
13 are fixedly connected by support frame 16 with furnace shell 6, and lifting shaft 14 is fixedly connected with the movable end of hydraulic cylinder 13, the peripheral hardware of lifting shaft 14
Have and be fixedly connected with the axle sleeve of its slidable connection 17, axle sleeve 17 with furnace shell 6, the one end of connecting bracket 15 is fixed with lifting shaft 14 to be connected
Connect, the other end is fixedly connected with bell 1, at lifting shaft 14, there is two limit switches, when lifting shaft 14 rises, below one
Limit switch automatically cuts off the power supply of hydraulic cylinder 13, in case operation is caused danger；When 1 liter of foot of bell, above one it is spacing automatic
The power supply of hydraulic cylinder 13 is cut off, exceeding stroke to prevent lifting shaft 14 occurs surprisingly.
In use, first inner bag 7 is put into furnace shell 6, then bell 1 is covered on inner bag 7, bell 1 and inner bag 7 pass through inner bag
Flange 8 coordinates with bell flange 2 to be fixed, and the annular for being used for placing sealing ring is provided between bell flange 2 and inner bag flange 8
Groove, the first bosh 4 is provided with the side that bell flange 8 is connected with sealing ring, water inlet water outlet is carried out above bell 1 can
To ensure that whole operation is carried out continuously without dismantling other part, circulating water is connected with from sealing ring in the first bosh 4
Top carries out cooling down to sealing ring, avoids sealing ring from being worked in the environment of long-time high temperature and easily causes the feelings of aging
Condition, the service life of sealing ring is improved, ensure that the sealing effectiveness of sealing ring, also provide guarantor for the heating effect of annealing furnace
Barrier, the second bosh 10 is provided with the side that inner bag flange 8 is connected with sealing ring, circulating water is connected with the second bosh 10
Cooling down is carried out to sealing ring below from sealing ring, further avoids sealing ring from being worked in the environment of long-time high temperature easily
The situation of aging is caused, improves the service life of sealing ring, ensure that the sealing effectiveness of sealing ring, is also the heating of annealing furnace
Effect provides safeguard.
Specifically, the width of the first bosh 4 and the second bosh 10 be more than between annular groove 81 it is maximum away from
From.
In a kind of embodiment, in order to ensure the service life of inner bag 7, the bottom of inner bag 7 is end enclosure structure, inner bag
7 bottoms be provided with end enclosure structure coordinate cushion block 18, cushion block 18 be used for isolate the bottom of inner bag 7 and the bottom of furnace shell 6, prevent both it
Touch and be moved so as to inner bag 7 of grinding away indirectly, cause inner bag 7 to damage, it is necessary to be changed.
In a kind of embodiment, for the structural strength of inner bag 7, the outer wall of inner bag 7 is suppressed with ripple.
Specifically, bell 1 is arch.
In a kind of embodiment, in order to compress bell 1 and inner bag 2, circumferentially it is fixedly connected with bell 1 some
Buckle 19, is circumferentially with the neck 20 coordinated with buckle 19 on bell flange 2, only needs buckle 19 being buckled in neck 20 during use
Middle can is realized and compressed.
Specifically, in addition to：Hot gas cycle component, hot gas cycle component include：The circulating fan 21 being fixed on bell 1
With heat exhausting pipe 22, heat exhausting pipe 22 is extended in bell 1 through bell 1.
In a kind of embodiment, in order to avoid the heating process of heating element heater 12 damages furnace shell 6, the inwall of furnace shell 6 is set
There are some ceramic washers 23, ceramic washer 23 is isolated for furnace shell 6 with heating element heater 12, is melted so as to protect furnace shell 6 not to be heated
Change.
Specifically, in order to improve structural strength, the bottom of furnace shell 6 is provided with heat-insulation layer, and heat-insulation layer includes：It is diatomite layer 24, light
Upright brick layer 25, flame retardant coating 26, diatomite layer 24 are layered on above vehicle frame, and the straight brick layer 25 of lightweight is layered on the top of diatomite layer 24, gently
Upright turn of layer is staggeredly tiled by the straight brick of two layers of lightweight, and flame retardant coating 26 is layered on above lightweight brickmaking layer, and cushion block 18 is located at flame retardant coating 26
Top.
Specifically, the outer wall of bell 1 is smaller 8mm than the internal diameter of inner bag 7.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (10)
- A kind of 1. high-efficiency vacuum annealing furnace, it is characterised in that including：Bell（1）, the bell（1）Outside is extended with bell flange（2）, the bell flange（2）Top is provided with the first T-slot （3）, first T-slot（3）Ledge in be provided with the first bosh（4）, first bosh（4）Top is set There is the first cover plate（5）, first cover plate（5）Pass through screw and the first T-slot（3）It is fixedly connected, first bosh （4）Water inlet and delivery port pass through the first cover plate（5）Extend to above cover plate,Furnace shell（6）,Inner bag（7）, the inner bag（7）Inwall and bell（1）Gap, the inner bag between outer wall be present（7）Upper end is wholely set Have and be used for and bell flange（2）The inner bag flange of cooperation（8）, the inner bag flange（8）Upper and bell flange（2）The side of cooperation Provided with some annular grooves（81）, the annular groove（81）It is interior to be provided with sealing ring, the inner bag flange（8）Bottom be provided with the Two T-slots（9）, second T-slot（9）Ledge in be provided with the second bosh（10）, second bosh （10）Lower section is provided with the second cover plate（11）, second cover plate（11）Pass through screw and the second T-slot（9）It is fixedly connected, it is described Second bosh（10）Water inlet and delivery port pass through the second cover plate（11）And furnace shell（6）Extend to furnace shell（6）Outside,Heating element heater（12）, the heating element heater（12）It is arranged on furnace shell（6）And inner bag（7）Between,Bell（1）Elevating mechanism, the bell（1）Elevating mechanism includes：Hydraulic cylinder（13）, lifting shaft（14）And connecting bracket （15）, the hydraulic cylinder（13）Pass through support frame（16）With furnace shell（6）It is fixedly connected, the lifting shaft（14）With hydraulic cylinder（13） Movable end be fixedly connected, the lifting shaft（14）It is externally provided with the axle sleeve with its slidable connection（17）, the axle sleeve（17）With Furnace shell（6）It is fixedly connected, the connecting bracket（15）One end and lifting shaft（14）It is fixedly connected, the other end and bell（1）It is fixed Connection.
- A kind of 2. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：First bosh（4）With Two boshes（10）Width be more than annular groove（81）Between ultimate range.
- A kind of 3. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The inner bag（7）Bottom is end socket knot Structure, the inner bag（7）Bottom is provided with the cushion block coordinated with end enclosure structure（18）.
- A kind of 4. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The inner bag（7）Outer wall is suppressed with ripple Line.
- A kind of 5. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The bell（1）For arch.
- A kind of 6. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The bell（1）On circumferentially fix It is connected with some buckles（19）, the bell flange（2）On be circumferentially with and buckle（19）The neck of cooperation（20）.
- 7. a kind of high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that also include：Hot gas cycle component, it is described Hot gas cycle component includes：It is fixed on bell（1）On circulating fan（21）And heat exhausting pipe（22）, the heat exhausting pipe（22）Pass through Bell（1）Extend to bell（1）It is interior.
- A kind of 8. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The furnace shell（6）Inwall is provided with some Ceramic washer（23）.
- A kind of 9. high-efficiency vacuum annealing furnace as claimed in claim 3, it is characterised in that：The furnace shell（6）Bottom is provided with insulation Layer, the heat-insulation layer include：Diatomite layer（24）, the straight brick layer of lightweight（25）, flame retardant coating（26）, the diatomite layer（24）It is layered on Above vehicle frame, the straight brick layer of lightweight（25）It is layered on diatomite layer（24）Top, the lightweight directly turn layer by the straight brick of two layers of lightweight Staggeredly tile, the flame retardant coating（26）It is layered on above lightweight brickmaking layer, the cushion block（18）Positioned at flame retardant coating（26）Top.
- A kind of 10. high-efficiency vacuum annealing furnace as claimed in claim 1, it is characterised in that：The bell（1）Outer wall compare inner bag （7）The small 6-10mm of internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857608.XA CN107723425A (en) | 2017-09-21 | 2017-09-21 | A kind of high-efficiency vacuum annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857608.XA CN107723425A (en) | 2017-09-21 | 2017-09-21 | A kind of high-efficiency vacuum annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107723425A true CN107723425A (en) | 2018-02-23 |
Family
ID=61207245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710857608.XA Withdrawn CN107723425A (en) | 2017-09-21 | 2017-09-21 | A kind of high-efficiency vacuum annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107723425A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680005A (en) * | 2018-07-05 | 2018-10-19 | 中冶京诚工程技术有限公司 | A kind of electric furnace |
| CN110388463A (en) * | 2019-07-09 | 2019-10-29 | 中国航发哈尔滨东安发动机有限公司 | A kind of rubber sealing device of adjustable decrement |
| CN113915809A (en) * | 2020-07-08 | 2022-01-11 | 核工业西南物理研究院 | Local cooling structure of window flange on high-vacuum high-temperature operation device |
| CN114105682A (en) * | 2021-11-26 | 2022-03-01 | 中钢热能金灿新能源科技(湖州)有限公司 | Improved method and device for prolonging service life of graphite crucible |
| CN114525387A (en) * | 2022-04-08 | 2022-05-24 | 佛山市明富兴金属材料有限公司 | Magnetic core vacuum heat treatment device and process |
-
2017
- 2017-09-21 CN CN201710857608.XA patent/CN107723425A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680005A (en) * | 2018-07-05 | 2018-10-19 | 中冶京诚工程技术有限公司 | A kind of electric furnace |
| CN110388463A (en) * | 2019-07-09 | 2019-10-29 | 中国航发哈尔滨东安发动机有限公司 | A kind of rubber sealing device of adjustable decrement |
| CN113915809A (en) * | 2020-07-08 | 2022-01-11 | 核工业西南物理研究院 | Local cooling structure of window flange on high-vacuum high-temperature operation device |
| CN114105682A (en) * | 2021-11-26 | 2022-03-01 | 中钢热能金灿新能源科技(湖州)有限公司 | Improved method and device for prolonging service life of graphite crucible |
| CN114525387A (en) * | 2022-04-08 | 2022-05-24 | 佛山市明富兴金属材料有限公司 | Magnetic core vacuum heat treatment device and process |
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Application publication date: 20180223 |
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