CN106363129A - Casting technique of supporting frame for building - Google Patents

Casting technique of supporting frame for building Download PDF

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Publication number
CN106363129A
CN106363129A CN201610771867.6A CN201610771867A CN106363129A CN 106363129 A CN106363129 A CN 106363129A CN 201610771867 A CN201610771867 A CN 201610771867A CN 106363129 A CN106363129 A CN 106363129A
Authority
CN
China
Prior art keywords
casting
sand
flange
core
riser
Prior art date
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
Application number
CN201610771867.6A
Other languages
Chinese (zh)
Inventor
苏志东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Share Cast Steel Co Ltd
Original Assignee
Share Cast Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Share Cast Steel Co Ltd filed Critical Share Cast Steel Co Ltd
Priority to CN201610771867.6A priority Critical patent/CN106363129A/en
Publication of CN106363129A publication Critical patent/CN106363129A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082Sprues, pouring cups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/086Filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088Feeder heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/103Multipart cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/106Vented or reinforced cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/24Moulds for peculiarly-shaped castings for hollow articles

Abstract

The invention relates to the technical field of casting, in particular to a casting technique of a supporting frame for building. The casting technique comprises the following processes that an outer cavity real sample model is adopted to be combined with an inner cavity sand core to form a cavity of a casting; the outer cavity real sample comprises a casting model sample and a supporting bed mould wholly covering the upper side of the supporting end of the casting model sample, and the top plane of the supporting bed mould serves as a model parting surface; the inner cavity sand core comprises a first sand core body for forming an inner cavity and a second sand core body for forming a small top hole, the second sand core body is inserted into the first sand core in a matched manner, and the bottom of the first sand core extends to the lower side of a flange hole and is fixed to a lower sand mould through an arbor; an open riser is arranged at the supporting end of the casting, a riser neck is arranged between the open riser and the end face of the supporting end, and a blind riser is arranged in the flange hole of the casting; the inner cavity of the casting, the normal direction of the end face of the flange end and the periphery of the flange end are each provided with a direct cooling chiller; and an open type gating system is adopted, a flow gate of an ingate is located below the blind riser of the inner cavity and is directly communicated with the blind riser, and a filter is arranged at the tail end of the flow gate.

Description

A kind of casting technique of bracing frame for building
Technical field
The present invention relates to casting technology field, particularly to a kind of casting technique of bracing frame for building.
Background technology
It is illustrated in figure 1 a kind of bracing frame foundry goods for building, the structure of this foundry goods comprises irregular curved-surface structure, contains Four support ends 1 and the flange end 2 of bottom, the wall thickness of foundry goods is larger, and intracavity space is narrow and small, each position in uneven thickness, right Outer surface quality has high demands.Foundry goods flange in the bottom is backed with the wide groove of 110mm, easy scab.Being provided with the middle of cast top Diameter is about the aperture of 130mm, all unfavorable to core positioning and fixation.Due to core cavity narrow space, in actual cast steel During water fills type, it is susceptible to sand mold erosion, the phenomenon of sintering, thus leading to scab problem.
Content of the invention
It is an object of the invention to provide a kind of casting technique of above-mentioned bracing frame for building, in being planted with overcoming casting pouring to cross Sand mold erosion, Sintering Problem, it is to avoid the defect of scab.
A kind of casting technique of bracing frame for building, including following process: full mold apperance makes and core makes: using outer Chamber full pattern moulding and the die cavity of inner chamber core combination formation foundry goods, described exocoel full pattern includes casting form and casting form supports The overall support plate covering in end upside, the top plane of described support plate is as moulding die joint;Described inner chamber core includes Form the core one of inner chamber and the core two forming top aperture, described core two cooperation is inserted in one in sand, described core one Bottom along extending on the downside of flange hole and fixed with drag box by arbor;Rising head and chill setting: divide in the support end of foundry goods Not She Zhi open riser, be provided with riser neck between described open riser and the end face of support end, the flange in the hole of foundry goods is provided with blind riser; The subsidy end of the inner chamber of described foundry goods, the normal direction of flange end end face and flange end periphery is respectively equipped with some direct-cooled cold Ferrum;Running gate system: adopt unchoked running system, including the lateral sprue to flange end that vertically stretches, with sprue The cross gate being sequentially communicated and ingate, the ingate of described ingate is positioned at the lower section of inner chamber blind riser and direct with blind riser Connection, described ingate end is provided with filter.
The casting technique of the present invention, by the way of casting form and a support plate cooperation group type, not only facilitates and forms complexity Foundry goods cavity structure, and facilitate the withdrawing pattern of casting form during moulding to take out, the space of a support plate is easy to carry out during moulding The setting of the supplementary structures such as rising head;Inner chamber core adopts the structure of Split assembled core, is easy to the making of core, and core passes through core Bone is positioned with sand mold, can prevent core during cast from being swung by molten steel impact, to ensure the size of inner chamber;Emitting by key position Mouthful and chill setting it is ensured that casting pouring quality;In running gate system setting, by unchoked running system, influent stream Ingate position is arranged on the lower section of inner chamber blind riser, makes molten metal flow through rising head and enters die cavity, improves the feeding effect of blind riser Really, before ingate, setting filter ensures to enter the degree of purity of die cavity molten steel.Therefore, the casting of the bracing frame for building of the present invention Technique, is improved by apperance design, rising head, chill and running gate system and can reduce the defects such as foundry goods scab, shrinkage cavity, to improve casting Part quality.
For ensureing the size of foundry goods, in described full mold apperance design process, at support end and flange end edge and the end of foundry goods The vertical direction in face arranges 15 25mm correction amount, arranges the correction amount of 15 20mm along flange hole radially inner side.
For improving full mold apperance surface quality, full mold apperance makes in journey, and the inside subject of described casting form is wooden Model, the periphery of described wooden form coats the resin bed that thickness is 20-25mm.
As a further improvement on the present invention, described exocoel full pattern modeling process includes making of top box sand mold and nowel sand mold Type, concrete modeling process includes: the first step, first makes nowel sand mold, the top of a support plate is flatted down and is placed on build platform, Then casting form flange end is coordinated horizontal upward on the upside of a support plate, then to back-up sand in sandbox, press during back-up sand The setting requirements of running gate system bury sprue, when near back-up sand to flange end, by the setting requirements of chill, outside flange end Week and the uniform chill in normal line of butt end direction, then proceed to back-up sand to height same with drag box;After back-up sand jolt ramming, drag box is overturn 180 °, so that typing is faced up, and take out a support plate to expose casting form;Second step, places cope on nowel sand mold Make top box sand mold, cooperation placement riser neck and open riser apperance above four support ends of casting form, then back-up sand, simultaneously Continue embedded sprue and sprue gate along above the sprue of nowel sand mold, until top box back-up sand terminates and jolt ramming;3rd step, will Top box sand mold and nowel sand mold typing, take out riser neck and open riser apperance from top box sand mold, take out casting mould from nowel sand mold Sample, before mould assembling, the cooperation of the inner chamber made core is assembled in nowel sand mold, last mould assembling.
Brief description
Fig. 1 is the schematic diagram of bracing frame for building.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the schematic diagram of casting form and a support plate.
Fig. 4 is casting form and a support plate moulding schematic diagram.
Fig. 5 is the schematic diagram of inner chamber core.
Fig. 6 is rising head and the chill setting schematic diagram of foundry goods.
Fig. 7 is the running gate system schematic diagram of foundry goods.
Specific embodiment
Describe the casting technique of the bracing frame for building of the present invention below in conjunction with the accompanying drawings in detail.
As shown in Fig. 3 to Fig. 7, the casting technique of present invention bracing frame for building, including following process: full mold apperance makes Make with core: form the die cavity of foundry goods using exocoel full pattern moulding and the combination of inner chamber core, exocoel full pattern includes casting form The overall support plate 3 covering with the upside of casting form support end, the top plane of a support plate 3, as moulding die joint 4, is such as schemed Shown in 3 and Fig. 4.Size and the machining in later stage for ensureing foundry goods need, and in full mold apperance design process, are determining foundry goods During the size of apperance, on the basis of overall reduced scale is 1.6-2.6%, hang down along with end face in the support end 1 of foundry goods and flange end 2 Straight direction arranges 15 25mm correction amount, arranges the correction amount of 15 20mm along flange hole radially inner side.For improving full mold mould The quality on sample surface, the inside subject of casting form is wooden form, and the periphery cladding thickness of described wooden form is 20-25mm Resin bed.
The inner chamber sand core structure of the present invention is as shown in figure 5, inner chamber core includes forming the core 1 of inner chamber and forms top The core 26 of aperture, core 26 cooperation inserts the installation in the hole of setting on 1 in sand to realize core combination and location and installation; The bottom of this core 1, along extending on the downside of flange hole and fixing with lower sand mold by arbor, prevents core during cast from being rushed by molten steel Hit swing and affect the size of inner chamber.
As shown in Figure 5 and Figure 6, in the casting technique of the present invention, rising head and chill are arranged: divide in four support ends of foundry goods Not She Zhi open riser 7, be provided with riser neck 7a between this open riser 7 and end face of support end, the flange in the hole of foundry goods is provided with and secretly emits Mouth 9;The subsidy end of the inner chamber of foundry goods, the normal direction of flange end end face and flange end periphery is respectively equipped with some direct-cooled chills 8.
Using unchoked running system as shown in Figure 6, including the sprue 10 vertically stretching lateral to flange end, The cross gate 11 being sequentially communicated with sprue 10 and ingate, the ingate of ingate be located at inner chamber blind riser lower section and with dark Rising head directly connects, and makes molten metal flow through blind riser and enters die cavity, improves the feeding effect of blind riser, ingate end was provided with Filter 12, in order to ensure to enter the degree of purity of die cavity molten steel.
The casting technique of the present invention, by the way of casting form and a support plate cooperation group type, not only facilitates and forms complexity Foundry goods cavity structure, and facilitate the withdrawing pattern of casting form during moulding to take out, the space of a support plate 3 is easy to carry out during moulding The setting of the supplementary structures such as rising head;Inner chamber core adopts the structure of Split assembled core, is easy to the making of core, and core passes through core Bone is positioned with sand mold, can prevent core during cast from being swung by molten steel impact, to ensure the size of inner chamber;Emitting by key position The setting of mouth and chill and it is ensured that casting pouring quality;In running gate system setting, by unchoked running system, influent stream Ingate position be arranged on the lower section of inner chamber blind riser, make molten metal flow through rising head and enter die cavity, improve the feeding of blind riser Effect, before ingate, setting filter ensures to enter the degree of purity of die cavity molten steel.Therefore, the casting of the bracing frame for building of the present invention Make technique, improved by apperance design, rising head, chill and running gate system and can reduce the defects such as foundry goods scab, shrinkage cavity.
According to the exocoel full pattern modeling process that the above-mentioned technique of the present invention carries out bracing frame for building include top box sand mold and The moulding of nowel sand mold, concrete modeling process includes: the first step, first makes nowel sand mold, the top of a support plate 3 is flatted down and puts On build platform, then casting form flange end is coordinated horizontal upward on the upside of a support plate, then to back-up sand in sandbox, The setting requirements pressing running gate system during back-up sand bury the part that sprue 10 is located at drag box, near back-up sand to flange end When, by the setting requirements of chill, in the uniform chill in flange end periphery and normal line of butt end direction, then proceed to back-up sand to and drag box With high;After back-up sand jolt ramming, drag box is overturn 180 °, makes die joint 4 upward, and take out a support plate 3 to expose casting form; Second step, places cope on nowel sand mold and makes top box sand mold, and cooperation placement above four support ends of casting form emits Mouth neck and open riser apperance, then back-up sand, continues embedded sprue and sprue gate, directly along above the sprue of nowel sand mold simultaneously Terminate and jolt ramming to top box back-up sand;3rd step, top box sand mold and nowel sand mold typing take out riser neck and bright from top box sand mold Rising head apperance, takes out casting form from nowel sand mold, before mould assembling, the cooperation of the inner chamber made core is assembled in nowel sand mold, Mould assembling afterwards, then proceedes to the foundry technology process of postorder.

Claims (4)

1. a kind of casting technique of bracing frame for building, including following process:
Full mold apperance makes and core makes: form the die cavity of foundry goods using exocoel full pattern moulding and the combination of inner chamber core, described Exocoel full pattern includes the overall support plate covering on the upside of casting form and casting form support end, and the top of described support plate is put down Face is as moulding die joint;Described inner chamber core includes being formed the core one of inner chamber and the core two forming top aperture, described In one in core two cooperation insertion sand, the bottom of described core one is on the downside of flange hole and solid with lower sand mold by arbor along extending Fixed;
Rising head and chill setting: be respectively provided with open riser in the support end of foundry goods, between described open riser and the end face of support end It is provided with riser neck, the flange in the hole of foundry goods is provided with blind riser;The inner chamber of described foundry goods, the normal direction of flange end end face and flange End periphery is respectively equipped with some direct-cooled chills;
Running gate system: adopt unchoked running system, including the lateral sprue to flange end that vertically stretches, with sprue The cross gate being sequentially communicated and ingate, the ingate of described ingate is positioned at the lower section of inner chamber blind riser and direct with blind riser Connection, described ingate end is provided with filter.
2. the casting technique of bracing frame for building according to claim 1 is it is characterised in that design in described full mold apperance During, with flange end, 15 25mm correction amount are set in the support end of foundry goods along the direction vertical with end face, along flange aperture The correction amount of 15 20mm is set to inner side.
3. the casting technique of bracing frame for building according to claim 1 is it is characterised in that described full mold apperance makes journey In, the inside subject of described casting form is wooden form, and the periphery of described wooden form coats the resin that thickness is 20-25mm Layer.
4. the casting technique of bracing frame for building according to claim 1 is it is characterised in that described exocoel full pattern moulding Journey includes top box sand mold and nowel sand mold, and concrete modeling process includes: the first step, first makes nowel sand mold, by the top of a support plate Flat down and be placed on build platform, then casting form flange end is coordinated horizontal upward on the upside of a support plate, Ran Houxiang Back-up sand in sandbox, the setting requirements pressing running gate system during back-up sand bury sprue, when near back-up sand to flange end, by cold The setting requirements of ferrum, in the uniform chill in flange end periphery and normal line of butt end direction, then proceed to back-up sand to height same with drag box;Fill out After sand jolt ramming, drag box is overturn 180 °, so that typing is faced up, and take out a support plate to expose casting form;Second step, Cope is placed on nowel sand mold and makes top box sand mold, cooperation above four support ends of casting form is placed riser neck and bright emitted Mouth apperance, then back-up sand, continues embedded sprue and sprue gate, until top box back-up sand along above the sprue of nowel sand mold simultaneously Terminate and jolt ramming;3rd step, top box sand mold and nowel sand mold typing take out riser neck and open riser apperance from top box sand mold, Take out casting form from nowel sand mold, before mould assembling, the cooperation of the inner chamber made core is assembled in nowel sand mold, last mould assembling.
CN201610771867.6A 2016-08-31 2016-08-31 Casting technique of supporting frame for building Pending CN106363129A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107737869A (en) * 2017-11-27 2018-02-27 共享装备股份有限公司 Improve the coating colloid of apperance release property and the preparation method of coat
CN107962154A (en) * 2017-11-30 2018-04-27 共享铸钢有限公司 A kind of forming method of large revolving body casting
CN109128046A (en) * 2018-10-29 2019-01-04 共享铸钢有限公司 A kind of casting method preventing cylinder casting nozzle defect
CN109248992A (en) * 2018-11-08 2019-01-22 溧阳市万盛铸造有限公司 A kind of casting mold structure and its manufacture craft
CN109332586A (en) * 2018-11-23 2019-02-15 安徽应流集团霍山铸造有限公司 A kind of production method casting mould closer
CN111036850A (en) * 2019-12-10 2020-04-21 中车长江铜陵车辆有限公司 Casting process design of frame-shaped structure cast steel node for engineering building
CN111889622A (en) * 2020-06-22 2020-11-06 共享铸钢有限公司 Casting method of compressor shell

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Publication number Priority date Publication date Assignee Title
DE19535457C1 (en) * 1995-09-23 1996-08-08 Winter Fritz Eisengiesserei Preparing mould for casting disc-shaped body, partic. brake disc
CN103600029A (en) * 2013-11-18 2014-02-26 宁夏共享集团有限责任公司 Modeling method of conical casting
CN104722718A (en) * 2015-03-13 2015-06-24 宝鸡石油机械有限责任公司 Casting method of mud pump air dome shell for bearing pressure
CN104907123A (en) * 2015-05-29 2015-09-16 芜湖银海机械制造有限公司 Lining of conical crusher and casting process of lining
CN105215271A (en) * 2015-10-29 2016-01-06 共享铸钢有限公司 A kind of cored-up mould sand mould structure of gear box casing foundry goods and cored-up mould method
CN105382203A (en) * 2015-10-29 2016-03-09 共享铸钢有限公司 Novel casting method for steam turbine valve shell casting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19535457C1 (en) * 1995-09-23 1996-08-08 Winter Fritz Eisengiesserei Preparing mould for casting disc-shaped body, partic. brake disc
CN103600029A (en) * 2013-11-18 2014-02-26 宁夏共享集团有限责任公司 Modeling method of conical casting
CN104722718A (en) * 2015-03-13 2015-06-24 宝鸡石油机械有限责任公司 Casting method of mud pump air dome shell for bearing pressure
CN104907123A (en) * 2015-05-29 2015-09-16 芜湖银海机械制造有限公司 Lining of conical crusher and casting process of lining
CN105215271A (en) * 2015-10-29 2016-01-06 共享铸钢有限公司 A kind of cored-up mould sand mould structure of gear box casing foundry goods and cored-up mould method
CN105382203A (en) * 2015-10-29 2016-03-09 共享铸钢有限公司 Novel casting method for steam turbine valve shell casting

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107737869A (en) * 2017-11-27 2018-02-27 共享装备股份有限公司 Improve the coating colloid of apperance release property and the preparation method of coat
CN107962154A (en) * 2017-11-30 2018-04-27 共享铸钢有限公司 A kind of forming method of large revolving body casting
CN109128046A (en) * 2018-10-29 2019-01-04 共享铸钢有限公司 A kind of casting method preventing cylinder casting nozzle defect
CN109248992A (en) * 2018-11-08 2019-01-22 溧阳市万盛铸造有限公司 A kind of casting mold structure and its manufacture craft
CN109248992B (en) * 2018-11-08 2020-04-10 溧阳市万盛铸造有限公司 Casting mold structure and manufacturing process thereof
CN109332586A (en) * 2018-11-23 2019-02-15 安徽应流集团霍山铸造有限公司 A kind of production method casting mould closer
CN111036850A (en) * 2019-12-10 2020-04-21 中车长江铜陵车辆有限公司 Casting process design of frame-shaped structure cast steel node for engineering building
CN111889622A (en) * 2020-06-22 2020-11-06 共享铸钢有限公司 Casting method of compressor shell

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