TR2021021555A2 - METHOD OF HEATING THE POWDER LAYER IN POWDER BED FUSION ADDITIONAL FABRICATION MACHINES - Google Patents
METHOD OF HEATING THE POWDER LAYER IN POWDER BED FUSION ADDITIONAL FABRICATION MACHINESInfo
- Publication number
- TR2021021555A2 TR2021021555A2 TR2021/021555A TR2021021555A TR2021021555A2 TR 2021021555 A2 TR2021021555 A2 TR 2021021555A2 TR 2021/021555 A TR2021/021555 A TR 2021/021555A TR 2021021555 A TR2021021555 A TR 2021021555A TR 2021021555 A2 TR2021021555 A2 TR 2021021555A2
- Authority
- TR
- Turkey
- Prior art keywords
- induction
- powder bed
- heating
- powder
- additive manufacturing
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 title claims description 38
- 230000004927 fusion Effects 0.000 title description 7
- 230000006698 induction Effects 0.000 claims abstract description 55
- 239000000654 additive Substances 0.000 claims abstract description 27
- 230000000996 additive effect Effects 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000010894 electron beam technology Methods 0.000 description 5
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 description 3
- 238000007500 overflow downdraw method Methods 0.000 description 3
- 229910021324 titanium aluminide Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
- B22F12/13—Auxiliary heating means to preheat the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
Buluş, toz yataklı eklemeli imalat tezgahlarında kaynaklanabilirliği düşük olan metal tozlarının da kullanılabilmesi için toz yatağına (10) serilen toz yüzeyinin indüksiyon ile ısıtıldığı bir yöntem ve bu yönteme uygun bir tezgah ile ilgilidir.The invention relates to a method in which the powder surface laid on the powder bed (10) is heated by induction in order to use metal powders with low weldability in powder bed additive manufacturing benches, and a workbench suitable for this method.
Description
TARIFNAME TOZ YATAK FÜZYON EKLEMELI IMALAT TEZGAHLARINDA TOZ KATMANININ ISITILMASINA DAIR YÖNTEM Teknolojik Alan: Bulus, toz yatakli eklemeli imalat tezgahlarinda kaynaklanabilirligi düsük olan metal tozlarinin da kullanilabilmesi için yapim haznesine serilen toz yüzeyinin indüksiyon ile isitildigi bir yöntem ve bu yönteme uygun bir tezgah ile ilgilidir. DESCRIPTION POWDER IN POWDER BED FUSION ADDITIVE MANUFACTURING MACHINES METHOD OF HEATING THE LAYER Technological Field: The invention was developed in powder bed additive manufacturing machines with low weldability. In order for metal powders to be used, the powder surface laid in the production chamber should be It is about a method in which it is heated by induction and a bench suitable for this method.
Teknigin Bilinen Durumu: Eklemeli imalat yöntemi ASTM standardi F2792-10'a göre “gelenek-sel makineyle isleme gibi çikarmali üretim metodolojilerinin aksine, malzemelerin 3 boyutlu model verilerinden nesneler yapmak için genellikle üst üste katmanlar seklinde birlestirilmesi sürecidir". Tarifname konusu bulus, burada bahsedilen imalat yönteminde kullanilabilir olmayan, kaynaklanabilirligi düsük metal tozlarinin da eklemeli imalat yönteminde kullanilabilir olmasini saglamaktadir. Known Status of the Technique: Additive manufacturing method is defined as “traditional” according to ASTM standard F2792-10. Unlike subtractive manufacturing methodologies such as machining, materials are often layered on top of each other to make objects from dimensional model data "The invention that is the subject of the description is the process of combining the Metal with low weldability that cannot be used in the manufacturing method It also enables powders to be used in the additive manufacturing method.
Metallere yönelik farkli eklemeli imalat teknolojileri vardir. Bunlardan en yaygin olani toz yatak füzyon (kaynastirma) teknolojisidir. Bu yöntemde metal tozlari, enerji kaynagi olarak lazer veya elektron isini demeti kullanilarak seçili olarak ergitilir. There are different additive manufacturing technologies for metals. The most common of these The one is powder bed fusion technology. In this method, metal powders are selectively using laser or electron beam as the energy source is melted.
Lazer isin kaynakli toz yatak füzyon sürecinde, yapim haznesi toz yatagi üzerine bir toz katmani serilir ve bir lazer isini toz katmanini seçmeli olarak ergitilerek üretilecek parçayi tozlari birbirleriyle ve bir alt katmandaki parçayla kaynatarak parça katmanini olusturmaktadir. Ardindan “alttas” olarak anilan platform genellikle 20-100 pm kadar alçaltilmakta ve yeni bir toz katmani serici biçak vasitasiyla yukari kaldirilan toz besleme haznesinden yapim haznesi toz yatagina dogru serilmektedir. Lazer isini bu katmanda da seçili bir alana uygulanarak, tozlar ergitmekte, birbirleriyle ve alt katmanla birlestirmektedir. Bu süreç çevrimi parçanin insa boyuna ulasana kadar devam eder. Islem bittiginde üretilen parça ve isin ile birlesmemis (füzyon olmamis) tozlar ayrilarak yapim haznesinden çikartilmaktadir. (Bakiniz sekil- 1) Lazer toz yatak füzyon (LPBF) eklemeli imalat teknolojisi özü itibariyle kaynak prosesidir. Metal tozlarinin birbirleriyle ve alt katmandaki parçayla birlesmesinde kaynaklama görülen mekanizmalar isler. Dolayisiyla metal tozu alasimlarinin kaynaklanabilirligi, lazer toz yatak füzyon teknolojisi ile parça üretilebilirligini etkileyen faktörlerdendir. Bazi malzemeler ergitme sirasinda veya ergitme sonrasindaki sogutma sirasinda çatlama meydana getirebilir. In the laser beam-induced powder bed fusion process, the build chamber powder bed A layer of powder is laid on top and a laser beam is selectively removed from the powder layer. The part to be produced by melting is mixed with the powders with each other and with the part in the lower layer. It forms the fragment layer by boiling. Then referred to as "subordinate" The platform is usually lowered by 20-100 pm and a new layer of dust is laid. powder from the powder feeding chamber, which is lifted up by the blade. It is laid out on the bed. The laser beam is directed to a selected area in this layer. By applying it, the powders melt and combine with each other and with the substrate. This The process cycle continues until the part reaches human height. When the process is finished The production is made by separating the produced parts and the powders that are not fused with the beam. is removed from its chamber. (See figure-1) Laser powder bed fusion (LPBF) additive manufacturing technology is essentially welding. process. Combination of metal powders with each other and with the part in the lower layer welding mechanisms work. Therefore, metal powder alloys weldability, part manufacturability with laser powder bed fusion technology is one of the influencing factors. Some materials are removed during melting or It may crack during subsequent cooling.
Lazer toz yatak füzyonunda (LPBF) çatlamaya duyarli malzemeleri islemek ve bilesen bozulmasini azaltmak için bir ön isitma sistemi yaygin olarak kullanilir. Ön isitma termal gradyanlari ve dolayisiyla iç gerilmeleri azaltir. Geleneksel ön isitma sistemleri parçanin insa edildigi yapim haznesinin altindan toz yatagini ve parçayi rezistanslarla isitir. Ancak bu isitma yetersizdir: ait tabaka ile çalisma düzlemi arasindaki mesafe, islem boyunca artar ve böylece çalisma düzleminde sicaklik azalir. Bunu telafi etmek için, tabandan verilen sicaklik arttirilabilir, fakat bu sicaklik ait tabakanin erime sicakligi asilmamalidir. Isitma miktari yapi yüksekligi ile sinirlidir. Machining crack-sensitive materials in laser powder bed fusion (LPBF) and A preheating system is commonly used to reduce component degradation. Preheating reduces thermal gradients and therefore internal stresses. traditional front Heating systems remove the powder bed from the bottom of the build chamber where the part is built. and heats the part with resistances. However, this heating is insufficient: with the layer of The distance between the working plane increases throughout the process and thus the working The temperature decreases in the plane. To compensate for this, the heat given off from the base It can be increased, but this temperature should not exceed the melting temperature of the corresponding layer. Heating The amount is limited by the height of the building.
Elektron isin demeti ergitme ile yapilan eklemeli imalat teknolojilerinde, üretim haznesinde serilmis tozun üzerinde elektron isin demeti, gücü ve çapi kontrollü olarak, belirlenen bölge ve desenlerde, elektromanyetik alanlar ile tarama yaptirilarak isitma gerçeklestirilebilir. Bu sayede gamma titanyum aluminid gibi malzemeler elektron isin demeti ergitme sistemli toz yatak füzyon teknolojisi tezgahlarda üretilebilirler. Elektron isin demeti ergitme sistemlerinde isin demetinin hareketini elektromanyetik alanlar ile saglandigindan çok hizlidir.In additive manufacturing technologies made by electron beam melting, production The electron beam on the powder laid in the chamber is controlled by its power and diameter. scanning with electromagnetic fields in specified regions and patterns. Heating can be achieved by doing this. In this way, like gamma titanium aluminide materials powder bed fusion technology with electron beam melting system They can be produced on looms. In electron beam melting systems Since the movement of the beam is provided by electromagnetic fields, it is very fast.
Buna karsilik lazer isin kaynakli sistemlerde lazer isini elektromekanik olarak aynalarin hareket ettirildigi galvo kafalarla yönlendirilirler. Bu yöntem elektron isin demeti ergitme sistemlerine göre çok yavastir. Ayrica Lazer isini çapi çok küçüktür. Bu nedenlerle lazer isini toz yatak yüzeyini isitma için kullanilamaz. On the other hand, in laser beam sourced systems, the laser beam is transmitted electromechanically. They are guided by galvo heads through which the mirrors are moved. This method electron It is very slow compared to beam melting systems. Also, the laser beam is very wide in diameter. is small. For these reasons, laser beam cannot be used to heat the powder bed surface.
Toz yatak yüzeyini isitmak için gelistirilen diger bir çözüm ise 808 nm dalgaboyuna sahip düsey-bosluklu yüzey-yayilimli lazerle (vertical-cavity surface-emitting lasers - VCSEL) toz yatak yüzeyini isitmaktir. Bu yöntemin dezavantaji, lazer kaynaginin konumu nedeniyle isitmanin toz yataginin bütün alaninda gerçeklesmesi, sadece istenilen yerlerin isitilmasinin yapilamamasi ve isitma için gerekli sürenin yüksek olmasidir. dokümaninda, lazer ile isitma tekniginin kullanildigi, amonyak gazi gibi çesitli kimyasallarin yönteme dahil edildigi bir yöntemden bahsedilmektedir. Yöntemin amaci, nihai ürünün tezgahtan ayrilmasini kolaylastirmaktir. dokümaninda, toz yatakli imalat yöntemi tarif edilmektedir. Bahsi geçen yöntemde, ikinci bir lazer kaynagi ile tozlar isitilmaktadir. Ayrica infrared isin kaynagi ile isitma yapilabildiginden de bahsedilmektedir. Fakat yöntemde indüksiyon ile isitmadan bahsedilmemektedir. Another solution developed to heat the powder bed surface is 808 nm. with a vertical-cavity surface-emitting laser with wavelength surface-emitting lasers - VCSEL) is to heat the powder bed surface. This method The disadvantage is that, due to the location of the laser source, heating affects the entire powder bed. area, only the desired areas cannot be heated, and The time required for heating is high. In the document, laser heating technique is used, various gases such as ammonia gas are used. A method in which chemicals are included in the method is mentioned. your method Its purpose is to facilitate the removal of the final product from the counter. In the document, the powder bed manufacturing method is described. Aforementioned In this method, powders are heated with a second laser source. Also infrared ray It is also mentioned that heating can be done with a source. But in the method Induction heating is not mentioned.
Yapilan literatür arastirmasinda, https://www.trumpf.com web adresinde, bir insa haznesine rezistans ile ön isitma uygulamasinin gerçeklestirildigi bir makine ile karsilasilmistir. Sadece uygulamada tezgah, daha yüksek sicakliga çikacak sekilde bir yapi ortaya koyulmustur. Bahsedilen makinede asagidaki avantajlarin saglandigindan bahsedilmistir: 0 Sicak gerilmeler nedeniyle sicak is takim çeliklerinin lazer toz yatak füzyon yöntemi ile üretilmesi sirasinda çatlaklar olusmaktadir. Parçanin önerilen yöntem ile üretim sirasinda isitilmasi ile takim is çelikleri . Titanyum parçalarin lazer toz yatak füzyon yöntemi ile üretimi sirasinda yüksek sicaklik nedeniyle parça içinde gerilmeler olusur. Önerilen yöntem ile üretimde parçanin bölgesel olarak isitilmasi iç gerilmeleri azaltir. Bu sayede daha büyük parçalar, yüksek parça kesiti degisimleri ile üretim olanakli hale gelir, ayrica isil dagilimi saglayan destek yapilarina daha az ihtiyaç olur. Böylece üretim zamani ve malzeme harcamasi azalir, tasarim özgürlügü artar. . Önerilen uygulama ile lnconel 738 gibi nikel süper alasim malzemeler ve Titanyum Aluminid (TiAI) gibi gamma titanyum intermetalik malzemelerin lazer toz yatak füzyon yöntemiyle üretimi mümkün olabilir. In the literature research, on the website https://www.trumpf.com, a A system in which pre-heating is applied to the building chamber with resistance. was encountered with the machine. Only in application, the bench is subjected to higher temperatures. A structure that will emerge has been put forward. In the mentioned machine the following It is mentioned that the advantages are provided: 0 Laser powder bed coating of hot work tool steels due to hot stresses Cracks occur during its production with the fusion method. of the piece tool work steels by heating during production with the recommended method. . During the production of titanium parts using the laser powder bed fusion method Due to high temperature, stresses occur inside the part. Suggested In the production process, regional heating of the part reduces the internal stresses. reduces. In this way, larger parts and high part cross-section changes production becomes possible, and also provides support for thermal dissipation. There is less need for structures. Thus, production time and material expenditure decreases and design freedom increases. . With the recommended application, nickel superalloy materials such as lnconel 738 and Gamma titanium intermetallic materials such as Titanium Aluminide (TiAl) It may be possible to produce it by laser powder bed fusion method.
Sonuç olarak teknigin bilinen durumunun asildigi, dezavantajlarinin giderildigi bir eklemeli imalat yöntemine ihtiyaç duyulmaktadir. As a result, the known state of the technique has been overcome and its disadvantages have been eliminated. An additive manufacturing method is needed.
Bulusun Kisa Açiklanmasi: Bulus, teknigin bilinen durumunun asildigi, dezavantajlarinin giderildigi, ilave olarak ekstra avantajlar içeren eklemeli imalat yöntemi ve buna uygun bir imalat tezgahidir. Brief Description of the Invention: The invention is one in which the known state of the technique is surpassed, its disadvantages are eliminated, and additional Additive manufacturing method with extra advantages and a suitable manufacturing method It is a workbench.
Bulusun amaci, eklemeli imalat yönteminde kullanilamayan, kaynaklanabilirlik özelligi düsük toz metallerin kullanilabilir olmasini saglayan indüksiyon ile isitma teknigi içeren bir yöntem ortaya koymaktir. The purpose of the invention is to provide weldability solutions that cannot be used in the additive manufacturing method. Induction heating, which enables the use of powder metals with low properties is to present a method that includes the technique.
Bulusun bir diger amaci, alternatif isitma teknigine sahip yeni bir eklemeli imalat tezgahi ortaya koymaktir. Another purpose of the invention is to develop a new additive manufacturing with alternative heating technique. is to reveal the counter.
Bulusun bir diger amaci, tercih edilen yüzeyi isitabilmek üzere esneklik kazandirilmis yeni bir eklemeli imalat tezgahi ortaya koymaktir.Another purpose of the invention is to provide flexibility in order to heat the preferred surface. The aim is to introduce a new additive manufacturing machine.
Sekillerin Açiklanmasi: Bulus, ilisikteki sekillere atifta bulunularak anlatilacaktir, böylece bulusun özellikleri daha net anlasilacaktlr. Ancak, bunun amaci bulusu bu belli düzenlemeler ile sinirlamak degildir. Tam aksine, bulusun ilisikteki istemler tarafindan tanimlandlgl alani içine dâhil edilebilecek bütün alternatif, degisiklik ve denkliklerinin kapsanmasi da amaçlanmistlr. Gösterilen ayrintilar, sadece mevcut bulusun tercih edilen düzenlemelerinin anlatimi amaciyla gösterildigi ve hem yöntemlerin sekillendirilmesinin, hem de bulusun kurallari ve kavramsal özelliklerinin en kullanisli ve kolay anlasilir tanimini saglamak amaciyla sunulduklari anlasilmalidir. Bu çizimlerde; Bilinen teknikte kullanilan eklemeli imalat yöntemini uygulayan bir tezgaha ait görünümdür. Explanation of Figures: The invention will be explained by referring to the attached figures, so that the invention is its features will be more clearly understood. However, the purpose of this is obvious It is not limited by regulations. On the contrary, the invention is claimed in the accompanying claims. All alternatives, modifications that can be included within the area defined by and their equivalences are also intended to be covered. Details shown are only Preferred embodiments of the present invention are illustrated for purposes of illustration and rules and concepts of both shaping methods and invention. In order to provide the most useful and easily understandable description of its features It should be understood that they are presented. In these drawings; It is a machine that applies the additive manufacturing method used in the known technique. This is the view of the counter.
Bulus konusu yöntemin uygulandigi tezgahin görünümüdür. This is the view of the bench on which the method subject to the invention is applied.
Bulus konusu yöntem ile indüksiyon isisinin tezgahin tüm yüzeyine uygulandigi görünüm. With the method of the invention, induction heat is applied to the entire machine. Appearance applied to the surface.
Bulus konusu yöntem ile indüksiyon isisinin tezgah yüzeyine belirli araliklarla uygulandigi görünüm. With the method of the invention, induction heat is applied to the countertop surface at a certain level. Appearance applied at intervals.
Bulus konusu yöntem ile indüksiyon isisinin tezgah yüzeyine seritler halinde uygulanmak üzere çok sayida indüksiyon bobininin yer aldigi görünüm. With the method of the invention, induction heat is applied to the countertop surface. a large number of induction coils to be applied in strips The view in which it is located.
Bulus konusu yöntem ile indüksiyon isisinin tezgah yüzeyine seritler halinde uygulandigi görünüm. With the method of the invention, induction heat is applied to the countertop surface. Appearance applied in strips.
Bulus konusu yöntem ile indüksiyon isisinin tezgah yüzeyine seritler halinde fakat belirli araliklarla uygulandigi görünüm. With the method of the invention, induction heat is applied to the countertop surface. Appearance in which it is applied in strips but at certain intervals.
Bu bulusun anlasilmaslna yardimci olacak sekiller ekli resimde belirtildigi gibi numaralandirllmls olup isimleri ile beraber asagida verilmistir.Figures that will help you understand this invention are as shown in the attached picture. They are numbered and given below along with their names.
Referanslarin Açiklanmasi: .Toz yatagi 11.Yatak hareket platformu 12.Toz serici biçak 13.Toz besleme haznesi 14.Indüksiyon bobini . Bobin hareket kolu 16.Isitilan yüzey A. Parça katmani Bulusun Açiklanmasi: Bu detayli açiklamada bulus konusu yöntem sadece konunun daha iyi anlasilmasina yönelik olarak, hiçbir sinirlayici etki olusturmayacak örneklerle açiklanmaktadir. Tarifnamede toz yatakli eklemeli imalat tezgahlarinda kaynaklanabilirligi düsük olan metal tozlarinin da kullanilabilmesi için toz yatagina (10) serilen toz yüzeyinin indüksiyon ile isitildigi bir yöntem ve bu yönteme uygun bir tezgah anlatilmaktadir. Disclosure of References: .powder bed 11.Bed movement platform 12.Dust spreading blade 13.Powder feeding chamber 14.Induction coil . Coil movement arm 16.Heated surface A. Track layer Description of the invention: In this detailed explanation, the method of the invention is only aimed at improving the subject. For understanding, with examples that will not create any limiting effect. is explained. In the specification, powder bed additive manufacturing machines In order to use metal powders with low weldability, powder A method in which the powder surface laid on the bed (10) is heated by induction and this A bench suitable for the method is described.
Sekil 1'de bilinen teknikteki bir eklemeli imalat tezgahina yönelik görünüm verilmektedir. Bulusun anlasilabilmesi için eklemeli imalat tezgahinin çalisma yönteminin dogru anlasilmasi gerekmektedir. Buna göre eklemeli imalat tezgahlarinda, toz besleme haznesinden (13) alinan metal tozlari, toz serici biçak (12) ile toz yatagina (10) serilmektedir. Devaminda serilen tozlar, parça katmaninin (A) olusturacak sekilde lazer ile isitilarak ergitilmektedir. Ayni anda yatak hareket platformu (11) ile toz yatagi mikron ölçülerde asagi hareket etmekte, toz yatagi (10) üzerine tekrardan toz serilerek isitma islemine devam edilmekte ve A parçasinin yüksekligi istenilen ölçüye gelene kadar proses tekrarlanmaktadir.Figure 1 is a view of an additive manufacturing machine in known technique. is given. In order to understand the invention, the working of the additive manufacturing machine The method must be understood correctly. Accordingly, additive manufacturing In the workbenches, the metal powders taken from the powder feeding chamber (13) are transferred to the powder spreader. It is laid on the powder bed (10) with the knife (12). The powders laid afterwards, the pieces It is melted by heating with a laser to form the layer (A). At the same time With the bed movement platform (11), the powder bed moves down in micron scales. The heating process continues by laying powder on the powder bed (10) again. and the process continues until the height of part A reaches the desired size. is repeated.
Eklemeli imalat yönteminde en büyük problem bütün metal tozlarinin yöntemde kullanilamamasidir. Bulusa konu yöntemde, toz yatakli eklemeli imalat tezgahlarinda kaynaklanabilirligi düsük olan metal tozlarinin da kullanilabilmesi için toz yatagina (10) serilen toz yüzeyinin indüksiyon ile isitilmasi amaçlanmaktadir. Indüksiyon ile isitma islemi lazer isleminden önce veya lazer isleminden sonra gerçeklestirilebilmektedir. The biggest problem in the additive manufacturing method is that all metal powders are processed in the method. is that it cannot be used. In the method of the invention, powder bed additive manufacturing Metal powders with low weldability can also be used in workbenches Induction heating of the powder surface laid on the powder bed (10) for is intended. Induction heating can be done before or after laser treatment. It can be performed after the process.
Bulusa konu yöntemde kullanilan indüksiyon ile isitma teknigi, toz yatagi (10) üzerine alternatif sekillerde uygulanabilmektedir. Ilk alternatifte indüksiyon ile isitma teknigi toz yataginin tüm yüzeyine uygulanmaktadir. Sekil 2 ve sekil 3'te isinin, toz yatagi (10) tüm yüzeyine uygulandigi görünüm verilmektedir. Buna göre toz yatagi (10) tüm yüzeyinin indüksiyon ile isitilmasi için, bir adet indüksiyon bobini (14) ve indüksiyon bobinini (14) hareket ettiren bobin hareket koluna (15) ihtiyaç duyulmaktadir. Indüksiyon bobininin (14) uzunlugu toz yatagi (10) üzerinde isitilmasi gereken alani uzunlugu kadardir. Bobin hareket kolu (15), proses için belirlenen hizlarda indüksiyon bobinini (14) hareket ettirerek sekil 3'te görülen, isitilan yüzeydeki (16) metal tozlarinin isitilmasini saglamaktadir. Induction heating technique used in the method subject to the invention, powder bed (10) It can be applied in alternative ways. In the first alternative, with induction The heating technique is applied to the entire surface of the powder bed. In Figure 2 and Figure 3 It appears that the heat is applied to the entire surface of the powder bed (10). This For heating the entire surface of the powder bed (10) by induction, one induction coil (14) and the coil that moves the induction coil (14) arm (15) is needed. The length of the induction coil (14) powder bed (10) is the length of the area that needs to be heated. Coil movement arm (15) by moving the induction coil (14) at the speeds determined for the process. Heating the metal powders on the heated surface (16) as seen in Figure 3. It provides.
Sekil 4”te toz yatagi (10) yüzeyinin belirli bölgelerinin aralikli olarak isitildigi bir alternatif isitma teknigi gösterilmistir. Bunun için bobin hareket kolu (15) hareket halinde iken, bir kontrolcü tarafindan indüksiyon bobini (14) açilip kapatilmakta, bu sayede toz yatagi (10) yüzeyi belirli araliklar ile isitilmaktadir. Sekil 4ite belirli araliklarla isitilan yüzeyler (16) görülmektedir. Figure 4 shows a system in which certain areas of the powder bed (10) surface are heated intermittently. An alternative heating technique is shown. For this, the bobbin movement lever (15) While in the state, the induction coil (14) is turned on and off by a controller, In this way, the powder bed (10) surface is heated at certain intervals. Figure 4ite specific The heated surfaces (16) can be seen at intervals.
Sekil 5'te toz yatagi (10) yüzeyinin seritler halinde isitilmasini saglayan alternatif teknige sahip imalat tezgahi gösterilmektedir. Buna göre tezgah, bobin hareket kolu (15) üzerine dizilmis çok sayida indüksiyon bobini (15) içermektedir. Bu sayede sekil 6'da görüldügü gibi toz yatagi (10) yüzey seritler halinde isitilabilmektedir. Ayni sekilde indüksiyon bobinleri (15) bir kontrolcü tarafindan açilip kapatilarak, sekil ?deki gibi belirli araliklar ile seritler halinde isitilabilmekte, toz yatagi (10) üzerinde yalnizca istenilen bölgeler isitilmaktadir. In Figure 5, the device that enables the surface of the powder bed (10) to be heated in strips is shown. A manufacturing bench with an alternative technique is shown. Accordingly, the loom, the bobbin A large number of induction coils (15) arranged on the movement arm (15) Contains. In this way, the powder bed (10) strips the surface as seen in Figure 6. It can be heated. Likewise, the induction coils (15) are connected to a controller. by opening and closing, in strips at certain intervals as shown in the figure. can be heated, only the desired areas on the powder bed (10) are heated.
Sekil 6 ve sekil 7'de isitilan yüzeyler (16) görülmektedir. The heated surfaces (16) can be seen in Figures 6 and 7.
Bulusta, isitma sicakligi, indüksiyon bobininin (14) gücüne, frekansina veya bobin hareket kolunun (15) hizina bagli olarak ayarlanabilir. Ayrica indüksiyonun frekans ve gücü ile isitmanin alt katmanlara hangi derinlikte etki edecegi de ayarlanabilmektedir. Isitma islemini gerçeklestiren indüksiyon bobini/bobinleri (14) kontrol edilerek istenilen bölgelerde isitma islemi gerçeklestirilebilmektedir. indüksiyon ile isitma miktari, toz yataginin tümünü gören veya indüksiyon bobinini takip eden termal veya infrared kamera ile ölçülerek kontrol edilebilmekte, isitma miktarini belirleyen indüksiyon gücü, ölçümden gelen geri bildirim ile otomatik olarak ayarlanabilmektedir. indüksiyon bobinlerine manyetik parçalar takarak indüksiyon akimlarinin belirli bir yöne dogru yönlendirilmesi ve konsantre edilmesi mümkün olabilmektedir.In the invention, the heating temperature depends on the power, frequency or frequency of the induction coil (14). It can be adjusted depending on the speed of the bobbin movement arm (15). Moreover The frequency and power of the induction and the depth at which the heating affects the lower layers are determined. It can also be adjusted. Induction that performs the heating process Heating process is carried out in the desired areas by checking the coil(s) (14). can be realized. The amount of induction heating covers the entire powder bed. with a thermal or infrared camera that sees or follows the induction coil Induction power, which determines the amount of heating, can be controlled by measuring It can be adjusted automatically with feedback from the measurement. By attaching magnetic parts to induction coils, induction currents can be controlled at certain levels. It is possible to direct and concentrate in one direction.
Bu parçalara "magnetic flux concentrator” denmekte olup, Türkçesi “indüksiyon manyetik aki yönlendiricisi” veya “indüksiyon manyetik aki yogunlastiricisi” olarak kullanilmaktadir. Bu parçalar ile indüksiyonun olusturdugu manyetik akimlar istenilen bölgede yogunlastirilmakta ve pratik olarak da parçanin daha kisa sürede ve daha fazla olarak isitilmasina yaramaktadir. Bulusta alternatif olarak indüksiyon bobini/bobinleri (14) üzerine takilmis, yüzey isitma veriminin artirilmasi için indüksiyon manyetik aki yogunlastiricisi (magnetic flux concentrator) yer alabilmektedir. These parts are called "magnetic flux concentrator", which means "induction" in Turkish. magnetic flux diverter” or “induction magnetic flux concentrator” It is used as. The magnetic field created by induction with these parts The currents are concentrated in the desired area and practically the part becomes more It allows for more heating in a shorter time. Alternative in invention It is installed on the induction coil(s) (14) and increases the surface heating efficiency. Induction magnetic flux concentrator (magnetic flux) to increase concentrator) may take place.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2021/021555A TR2021021555A2 (en) | 2021-12-29 | 2021-12-29 | METHOD OF HEATING THE POWDER LAYER IN POWDER BED FUSION ADDITIONAL FABRICATION MACHINES |
| PCT/TR2022/051639 WO2023129068A1 (en) | 2021-12-29 | 2022-12-28 | Method of heating the powder layer in powder bed fusion additive manufacturing workbenches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2021/021555A TR2021021555A2 (en) | 2021-12-29 | 2021-12-29 | METHOD OF HEATING THE POWDER LAYER IN POWDER BED FUSION ADDITIONAL FABRICATION MACHINES |
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| CN109663917B (en) * | 2019-01-24 | 2019-12-27 | 大连理工大学 | Device and method for manufacturing titanium-based composite material through electromagnetic induction heating assisted laser additive manufacturing |
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