CN105679492A - Electric inductor and manufacturing method thereof - Google Patents
Electric inductor and manufacturing method thereof Download PDFInfo
- Publication number
- CN105679492A CN105679492A CN201610235026.3A CN201610235026A CN105679492A CN 105679492 A CN105679492 A CN 105679492A CN 201610235026 A CN201610235026 A CN 201610235026A CN 105679492 A CN105679492 A CN 105679492A
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- Prior art keywords
- inductance
- electric conductor
- soft magnetic
- manufacture method
- magnetic metal
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000007747 plating Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009156 water cure Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
- H01F2017/046—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Coils Or Transformers For Communication (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an electric inductor manufacturing method.The method comprises the following steps that 1, an electric conductor is put into a mold; 2, the mold is filled with soft magnetic metal powder, and pressure is applied to integrally press the soft magnetic metal powder and the electric conductor into a pressed body; 3, heat treatment is performed on the pressed body, so that the soft magnetic metal material has the insulation resistance of the preset degree and releases the internal stress generated during pressing forming; 4, an oxidation layer, stretching out of the surface of the electric conductor, of the pressed body subjected to heat treatment is treated, so that welding and tin plating are conveniently achieved; 5, the electric inductor stretching out of a magnet is reshaped, so that needed surface attaching or inserting is conveniently achieved.The invention further discloses an electric inductor which is manufactured through the electric inductor manufacturing method.Accordingly, high-operating temperature, large-current, low-inductance value and high-automation level production of the electric inductor can be achieved, the quality of the electric inductor is improved, and the manufacturing yield of the electric inductor is increased.
Description
Technical field
The present invention relates to a kind of magnetic electron parts, particularly relate to a kind of inductance and preparation method thereof.
Background technology
Along with the development of semiconductor technology, more than the operating current 50A of single cpu. For the DC-DC circuit powered to PC, it is desirable to the operating current of the power inductance of its periphery also increases therewith. Simultaneously because the requirement of high energy efficiency, the resistance value of inductance also requires that more and more less, to reduce the heat that electric current produces. Simultaneously for the miniaturization of device, the operating frequency of inductance also promotes therewith, current dominant frequency is at 500KHz～1MHz, and common inductance value ranges for the big current power inductance value of 50nH～680nH, current existing application and this circuit frequently with following two prevailing model:
One is adopt whole magnetic core pattern. FT magnetic core or BDS magnetic core are carried out the cutting of accurate air gap, around after conductive winding penetrated the big current power inductance of formation.
Two is adopt bonding magnetic core. It is usually CI magnetic core or EI magnetic core at present. At C magnetic core and I magnetic core, or the pad of high dimensional accuracy is adopted to add bonding glue between E magnetic core and I magnetic core or the spheroidal particle bonding glue containing high intensity, high dimensional accuracy bonds. Then in CI core combination gap, introduce conductive winding form big current power inductance.
All there are bigger technological difficulties in current both processing technology:
For whole magnetic core scheme, mainly have three technological difficulties: the through hole of (1) whole magnetic core when compressing, mould easy damaged, service life is short; (2) clear size of opening is restricted, during for being smaller in size than 0.2mm, is difficult to suppress; (3) accurate air gap is when cutting, and process window is narrow, produces qualification rate low;
For bonding magnetic core scheme, when main technological difficulties are in that adhesive glue water cure, combination interface need to be applied bigger pretightning force. The hardening time of general high temperature glue generally at 30min～120min,
During curing applying pretightning force for a long time, generally can only semi-automation carry out, automaticity is difficult to improve.
Summary of the invention
Present invention is primarily targeted at and overcome the deficiencies in the prior art, a kind of inductance and preparation method thereof is provided, avoid the difficult point of prior art, it is capable of the production of the inductance high automaticity of the big electric current low inductance of inductor product especially High Operating Temperature, and improves the quality of inductance and make yield.
For achieving the above object, the present invention is by the following technical solutions:
A kind of inductance manufacture method, comprises the following steps:
S1, electric conductor is put in mould;
S2, in described mould, load soft magnetic metal powder body, and apply pressure by compressing for press body for described soft magnetic metal powder body and described electric conductor one;
S3, described press body is carried out heat treatment, so that described soft magnetic metallic material has the insulation impedance of predetermined extent internal stress when discharging compressing;
S4, the electric conductor surface that the described press body after heat treatment is stretched out magnet oxide layer process, in order to stannum in welding;
S5, the electric conductor stretching out magnet is carried out shaping, in order to realize required surface mount or plug-in mounting.
Further:
Described electric conductor adopts flat wire or round wires, and its equivalent number of turns formed on magnet is 3/4 circle.
In step S5, the electric conductor stretching out magnet is carried out bending and molding and obtains electrode.
In step S2, the compressing pressure of described soft magnetic metal powder is at 600MPa～1500MPa.
In step S3, being placed in air by described press body or carry out heat treatment in 500～900 DEG C in nitrogen, when carrying out heat treatment in nitrogen, it is preferred that maximum temperature is 850 DEG C, the process time is 2 hours.
Described soft magnetic metal powder body is carbonyl iron dust, FeSiCr or FeSiAl iron-based alloy.
Described soft magnetic metal powder body is repressed and equivalent relative permeability after heat treatment is 15～100.
Described electric conductor is the copper conductor of nickel plating or silver conductor or Kufil conductor.
Inorganic insulation material is covered on the electric conductor surface of finished product.
A kind of inductance, it is the inductance adopting any one inductance manufacture method aforementioned to make.
Beneficial effects of the present invention:
Inductance is made by inductance manufacture method provided by the invention, it can be avoided that the technological difficulties of existing scheme, can realize the production of the inductance high automaticity of the big electric current low inductance of inductor product especially High Operating Temperature, improve the quality of inductance and make yield, and extend inductance service life. Made inductance can reach operation temperature higher than 300 DEG C, even up to more than 500 DEG C.
Specifically, technical scheme is adopted to have following advantage:
(1) powder is adopted to suppress heat treated production technology, it is possible to achieve full-automatic production;
(2) powder is adopted to suppress heat treated production technology, it may not be necessary to concentrating air gap, the technological process of production is simple;
(3) adopting soft magnetic metallic material, the Curie temperature of such material is more than 500 DEG C, even up to more than 700 DEG C;
(4) adopting soft magnetic metallic material, such material initial permeability varies with temperature inconspicuous, has good temperature stabilization characteristic;
(5) electric conductor of nickel plating or the electric conductor of inorganic insulation are preferably employed, it is possible to achieve the at high temperature insulation characterisitic of conductor and magnet;
(6) heat treatment is carried out preferably in 500～900 DEG C of nitrogen, it is possible to make soft magnetic metallic material have high insulation impedance, internal stress when simultaneously discharging compressing.
Accompanying drawing explanation
Fig. 1 a to Fig. 1 d is 4 kinds of case effect figure of the inductor product of the manufacture method making of the present invention;
Fig. 2 is the structural representation of a kind of specific embodiment of inductor product of the present invention;
Fig. 3 a to Fig. 3 g is the manufacturing process schematic diagram of the inductance manufacture method specific embodiment of the present invention.
Detailed description of the invention
Hereinafter embodiments of the present invention are elaborated. It is emphasized that the description below is merely exemplary, rather than in order to limit the scope of the present invention and application thereof.
Consult Fig. 3 a to Fig. 3 g, in one embodiment, a kind of inductance manufacture method, comprise the following steps:
S1, electric conductor is put in mould;
S2, in described mould, load soft magnetic metal powder body, and apply pressure by compressing for press body for described soft magnetic metal powder body and described electric conductor one;
S3, described press body is carried out heat treatment, so that described soft magnetic metallic material has the insulation impedance of predetermined extent internal stress when discharging compressing;
S4, the electric conductor surface that the described press body after heat treatment is stretched out magnet oxide layer process, in order to stannum in welding;
S5, the electric conductor stretching out magnet is carried out shaping, in order to realize required surface mount or plug-in mounting.
In a preferred embodiment, described electric conductor adopts flat wire or round wires, and its equivalent number of turns formed on magnet is 3/4 circle.
In a preferred embodiment, in step S5, the electric conductor stretching out magnet is carried out bending and molding and obtains electrode.
In a preferred embodiment, in step S2, the compressing pressure of described soft magnetic metal powder is at 600MPa～1500MPa.
In a preferred embodiment, in step S3, being placed in air by described press body or carry out heat treatment in 500～900 DEG C in nitrogen, when carrying out heat treatment in nitrogen, it is preferred that maximum temperature is 850 DEG C, the process time is 2 hours.
In a preferred embodiment, described soft magnetic metal powder body is the carbonyl iron dust of sinterable type, FeSiCr or FeSiAl iron-based alloy.
In a preferred embodiment, described soft magnetic metal powder body is repressed and equivalent relative permeability after heat treatment is 15～120.
In a preferred embodiment, described electric conductor is the copper conductor of nickel plating or silver conductor or Kufil conductor.
Inorganic insulation material is covered on the surface of the electric conductor of finished product.
In another kind of embodiment, a kind of inductance, it can be the inductance adopting the inductance manufacture method of aforementioned any embodiment to make.
As shown in Fig. 1 a to Fig. 2, according to specific embodiment, this inductance includes electric conductor 1 and magnet 2, and described magnet 2 is to adopt soft magnetic metal powder suppressing heat to process to form. The equivalent number of turns of described electric conductor 1 is preferably 3/4 circle, can adopt flat wire or round wires. Electrode is directly carried out bending and molding acquisition by electric conductor 1. The concrete manufacture method of this inductance includes:
Electric conductor is put in mould.
Soft magnetic metal powder body is loaded in mould, horizontal high voltage power of going forward side by side is compressing, wherein soft magnetic metal powder material can be the iron-based alloys such as the carbonyl iron dust of sinterable type, FeSiCr or FeSiAl, and the pressure that wherein soft magnetic metal powder is compressing is at 600MPa～1500MPa.
Press body is placed in air or nitrogen carries out heat treatment in 500～900 DEG C.
Soft magnetic metal powder is repressed and equivalent relative permeability after heat treatment is 15～120.
The oxide layer on the electric conductor surface that the press body after heat treatment is stretched out magnet processes, it is simple to stannum in welding.
The electric conductor stretching out magnet is carried out shaping, it is simple to realize required surface mount or plug-in mounting.
Electric conductor adopts the copper conductor of nickel plating or silver conductor or Kufil.
The surface of the electric conductor of finished product can adopt inorganic matter insulation to cover.
Above method can make a kind of big electric current low inductance inductance of High Operating Temperature. The operation temperature of the low sensibility reciprocal inductance of big electric current is higher than 300 DEG C, even up to more than 500 DEG C.
The inductance value of inductance with the relative variation coefficient of temperature less than 1000ppm/K.
Fig. 3 a to Fig. 3 e illustrates the manufacturing process of the inductance manufacture method embodiment of the present invention.
(1) as shown in Figure 3 a, electric conductor is placed in mould;
(2) as shown in Figure 3 b, soft magnetic metal powder body is inserted in mould;
(3) as shown in Figure 3 c, by pressed by powder molding;
(4) as shown in Figure 3 d, press body carrying out in nitrogen heat treatment, maximum temperature 850 DEG C, the process time is 2 hours;
(5) as shown in Figure 3 e, the oxide layer stretching out the electric conductor at magnet two ends is processed, it is simple to stannum in welding.
(6) electric conductor stretching out magnet two ends is carried out shaping, obtain final finished, shown in the example of two kinds of finished products such as Fig. 3 f and Fig. 3 g.
Above content is to combine concrete/preferred embodiment further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations. For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; these embodiments having described that can also be made some replacements or modification by it, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. an inductance manufacture method, it is characterised in that comprise the following steps:
S1, electric conductor is put in mould;
S2, in described mould, load soft magnetic metal powder body, and apply pressure by compressing for press body for described soft magnetic metal powder body and described electric conductor one;
S3, described press body is carried out heat treatment, so that described soft magnetic metallic material has the insulation impedance of predetermined extent internal stress when discharging compressing;
S4, the electric conductor surface that the described press body after heat treatment is stretched out magnet oxide layer process, in order to stannum in welding;
S5, the electric conductor stretching out magnet is carried out shaping, in order to realize required surface mount or plug-in mounting.
2. inductance manufacture method as claimed in claim 1, it is characterised in that described electric conductor adopts flat wire or round wires, and its equivalent number of turns formed on magnet is 3/4 circle.
3. inductance manufacture method as claimed in claim 1, it is characterised in that in step S5, the electric conductor stretching out magnet is carried out bending and molding and obtains electrode.
4. inductance manufacture method as claimed in claim 1, it is characterised in that in step S2, the compressing pressure of described soft magnetic metal powder is at 600MPa～1500MPa.
5. the inductance manufacture method as described in any one of Claims 1-4, it is characterised in that in step S3, described press body is placed in air or nitrogen carries out heat treatment in 500～900 DEG C, when carrying out heat treatment in nitrogen, it is preferred that maximum temperature is 850 DEG C, the process time is 2 hours.
6. the inductance manufacture method as described in any one of claim 1 to 5, it is characterised in that described soft magnetic metal powder body is the carbonyl iron dust of sinterable type, FeSiCr or FeSiAl iron-based alloy.
7. the inductance manufacture method as described in any one of claim 1 to 5, it is characterised in that described soft magnetic metal powder body is repressed and equivalent relative permeability after heat treatment is 15～120.
8. the inductance manufacture method as described in any one of claim 1 to 5, it is characterised in that described electric conductor is the copper conductor of nickel plating or silver conductor or Kufil conductor.
9. the inductance manufacture method as described in any one of claim 1 to 5, it is characterised in that cover inorganic insulation material on the surface of the electric conductor of finished product.
10. an inductance, it is characterised in that be the inductance adopting the inductance manufacture method as described in any one of claim 1 to 9 to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235026.3A CN105679492A (en) | 2016-04-15 | 2016-04-15 | Electric inductor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235026.3A CN105679492A (en) | 2016-04-15 | 2016-04-15 | Electric inductor and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN105679492A true CN105679492A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610235026.3A Pending CN105679492A (en) | 2016-04-15 | 2016-04-15 | Electric inductor and manufacturing method thereof |
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| CN (1) | CN105679492A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633934A (en) * | 2016-07-18 | 2018-01-26 | 美磊科技股份有限公司 | Alloy material perforation gapless inductance preparation method |
| CN107749340A (en) * | 2017-10-17 | 2018-03-02 | 深圳顺络电子股份有限公司 | A kind of high reliability high current molding inductance and manufacture method |
| CN109754986A (en) * | 2019-01-28 | 2019-05-14 | 深圳顺络电子股份有限公司 | A kind of ejection formation inductance and its manufacturing method |
| CN111986905A (en) * | 2020-08-14 | 2020-11-24 | 深圳市铂科新材料股份有限公司 | Manufacturing method of die pressing combined inductor and die pressing combined inductor |
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| CN204029522U (en) * | 2014-09-07 | 2014-12-17 | 资兴市弘电电子科技有限公司 | A kind of iron aluminum silicon powder integrally suppresses inductance |
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| CN101552133A (en) * | 2008-12-08 | 2009-10-07 | 北京慨尔康科技发展有限公司 | Micro-arc spot welding process for secondary coil terminal lug |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633934A (en) * | 2016-07-18 | 2018-01-26 | 美磊科技股份有限公司 | Alloy material perforation gapless inductance preparation method |
| CN107749340A (en) * | 2017-10-17 | 2018-03-02 | 深圳顺络电子股份有限公司 | A kind of high reliability high current molding inductance and manufacture method |
| CN109754986A (en) * | 2019-01-28 | 2019-05-14 | 深圳顺络电子股份有限公司 | A kind of ejection formation inductance and its manufacturing method |
| CN109754986B (en) * | 2019-01-28 | 2024-01-05 | 东莞顺络电子有限公司 | Injection molding inductor and manufacturing method thereof |
| CN111986905A (en) * | 2020-08-14 | 2020-11-24 | 深圳市铂科新材料股份有限公司 | Manufacturing method of die pressing combined inductor and die pressing combined inductor |
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Application publication date: 20160615 |