Bewise Inc. www.tool-tool.com Reference source from the internet.
Improving Aerospace Engines with Advanced Materials
Ceramics and Metal Alloys Survive High Temperatures
Advanced ceramics and high performance superalloys are playing an important role in improving aerospace engines as aerospace manufacturers look for high-temperature materials that increase performance, improve fuel efficiency and satisfy safety standards, while at the same time lowering manufacturing costs.
An example of superalloys available for high temperature braze repair applications are pre-sintered preforms, a customized blend of the superalloy base and a low melting braze alloy powder in either a plate form, specific shape, paste, or paint. PSPs are used extensively for reconditioning, crack repair and dimensional restoration of such aerospace engine components as turbine blades and vanes.
By Fred Kimock
Morgan Technical Ceramics
Advanced ceramics and high performance superalloys are playing an important role in improving aerospace engines as aerospace manufacturers look for high-temperature materials that increase performance, improve fuel efficiency and satisfy safety standards, while at the same time lowering manufacturing costs.
Brazing and investment casting -- two ancient arts that have been adapted for use in repairing and manufacturing aerospace engines -- make use of ceramic’s extreme heat resistance, in addition to its other unique wear and corrosion resistance, light weight, and electrical and heat insulation.
New high-performance metal brazing alloys are being used for high temperature braze repairs and for sealing ceramic-to-metal pressure sensor and temperature sensor components.
Hot and Hotter – Ability to Withstand Increasing Engine Heat is Key
To achieve greater engine fuel efficiencies, engines are running at higher temperatures and must be cooled with more intricate cooling schemes, requiring the casting of complex cooling passages. Stronger metal alloys are being used in the casting process, and a core material must be able to withstand the extremely high temperatures used to pour these alloys.
Gas turbine engine efficiency is largely determined by turbine temperature, since the less cooling air used results in more air available for propulsion. Increasing temperature capability of the turbine is therefore key to improving engines. And because engines run hotter as processing temperature is increased, there is a need for demanding materials to put together the engines.
The Ancient and Modern Art of Brazing
Brazing alloys are used for metal-to-metal bonding in engine maintenance repair and overhaul, assembly of aerospace components, and repair of micro-cracks. They are also used for ceramic-to-metal assemblies requiring joining by metalizing ceramic surface and brazing of components, including pressure and temperature sensors, thermocouple housings, and fire detection feedthrus.
In a general sense, brazing is a joining process that relies on the wetting flow and solidification of a brazing filler material to form a metallurgical bond, a strong structural bond, or both between materials. The process is unique in that this metallurgical bond is formed by melting the brazing filler only; the components being joined do not melt.
Research into the development of advanced brazing materials for aerospace engine component repair has given rise to both precious and non-precious alloys. Precious alloys (for example, gold, silver, platinum, and palladium) are used mainly in original equipment manufacturers’ assemblies for vanes, nozzles, sensors, and igniters. Non-precious alloys are used in MRO and are constantly evolving as better and more heat efficient alloys are developed.
A number of new brazing alloys are available for use in aerospace engine repair and reassembly. For example, Morgan Technical Ceramics’ Wesgo Metals business (MTC-Wesgo Metals) supplies Nioro, a low erosion alloy that allows the base material to retain its properties and is a good choice for repairing fuel systems and compressors.
Another example of the superalloys available for high temperature braze repair applications are pre-sintered preforms (PSPs), a customized blend of the superalloy base and a low melting braze alloy powder in either a plate form, specific shape, paste, or paint. PSPs are used extensively for reconditioning, crack repair and dimensional restoration of such aerospace engine components as turbine blades and vanes. Thin areas and crack healing is done with paste and paints, while preforms are used for dimensional restoration.
With turbine temperatures reaching up to 1300°C (2350°F) and the presence of hot corrosive gases, aerospace engine components experience considerable erosion and wear. The pre-sintered preforms are customized to fit the shape of the component and then tack-welded into place and brazed. PSPs are offered in various compositions and shapes, including curved, tapered, and cylindrical, as well as paste and paint. They save time and money and extend the life of engine components by up to 300 percent, making it a more reliable and cost effective method than traditional welding, which requires post-braze machining or grinding. Brazing allows whole components to be heated in a vacuum furnace, reducing distortions and increasing consistency, resulting in a high quality repair process.
Investment Casting – Another Ancient and Modern Art
Investment casting is a key process used in the production of aerospace engine blades, and high quality ceramic cores have emerged as the material of choice for use in the investment casting process. Investment casting of new super engine alloy materials enables the development of more intricate designs that perform better in engines. Operating temperatures have increased, from about 400°C to 1100°C, and along with that change has been an evolution in materials that meet the demand for surviving higher temperatures.
Fused silica ceramic cores are used in investment airfoil casting of blades and vanes for rotating and static parts of aerospace engines. The process is used primarily with chrome bearing steel alloys. Advanced ceramics with controlled material properties allow component designers to make special cooling channels that keep engines from overheating. Ceramic cores are capable of producing thin cross sections and holding tight tolerances, which help produce accurate internal passageways. The ceramic cores are strong enough to withstand the wax injection step in the investment casting process. While the casting is poured, the ceramic core remains stable, yet is readily leached using standard foundry practices once the casting has cooled.
For example, Morgan Technical Ceramics Certech business (MTC-Certech) has developed a ceramic core with its proprietary P52 material, which exhibits greater dimensional accuracy while maintaining tight tolerances without distortion. The cores remain stable at high temperatures and do not prematurely deform, which is important, given the extremely high temperatures required for engine component production. The cores can be chemically dissolved after the casting has cooled, leaving the clean air passage replica needed in today’s efficient turbine engines.
While dimensionally strong, the P52 core material also exhibits improved crushability during solidification. This means that it remains rigid and stable through the casting process but is crushable when it needs to be during the metal solidification process. This is particularly useful for alloys that are prone to hot-tearing (those that exhibit lower core temperature in equiax castings) and/or recrystallization (castings that are involved in directionally solidified or single crystal castings).
Bright Future for Ceramics in Aerospace Engines
Driven by the aerospace industry’s demand for higher performance and lower costs, material scientists and ceramics component manufacturers will continue to develop new materials and processes that take advantage of advanced ceramic materials’ properties, particularly those that let engines run hotter and more efficiently.
歡迎來到Bewise Inc.的世界，首先恭喜您來到這接受新的資訊讓產業更有競爭力，我們是提供專業刀具製造商，應對客戶高品質的刀具需求，我們可以協助客戶滿足您對產業的不同要求，我們有能力達到非常卓越的客戶需求品質，這是現有相關技術無法比擬的，我們成功的滿足了各行各業的要求，包括：精密HSS DIN切削刀具、協助客戶設計刀具流程、DIN or JIS 鎢鋼切削刀具設計、NAS986 NAS965 NAS897 NAS937orNAS907 航太切削刀具,NAS航太刀具設計、超高硬度的切削刀具、醫療配件刀具設計、複合式再研磨機、PCD地板專用企口鑽石組合刀具、粉末造粒成型機、主機版專用頂級電桿、PCD V-Cut刀、捨棄式圓鋸片組、粉末成型機、航空機械鉸刀、主機版專用頂級電感、’汽車業刀具設計、電子產業鑽石刀具、木工產業鑽石刀具、銑刀與切斷複合再研磨機、銑刀與鑽頭複合再研磨機、銑刀與螺絲攻複合再研磨機等等。我們的產品涵蓋了從民生刀具到工業級的刀具設計；從微細刀具到大型刀具；從小型生產到大型量產；全自動整合；我們的技術可提供您連續生產的效能，我們整體的服務及卓越的技術，恭迎您親自體驗！！
BW Bewise Inc. Willy Chen willy@tool-tool.com bw@tool-tool.com www.tool-tool.com skype:willy_chen_bw mobile:0937-618-190 Head &Administration Office No.13,Shiang Shang 2nd St., West Chiu Taichung,Taiwan 40356 http://www.tool-tool.com/ / FAX:+886 4 2471 4839 N.Branch 5F,No.460,Fu Shin North Rd.,Taipei,Taiwan S.Branch No.24,Sec.1,Chia Pu East Rd.,Taipao City,Chiayi Hsien,Taiwan
Welcome to BW tool world! We are an experienced tool maker specialized in cutting tools. We focus on what you need and endeavor to research the best cutter to satisfy users’ demand. Our customers involve wide range of industries, like mold & die, aerospace, electronic, machinery, etc. We are professional expert in cutting field. We would like to solve every problem from you. Please feel free to contact us, its our pleasure to serve for you. BW product including: cutting tool、aerospace tool .HSS DIN Cutting tool、Carbide end mills、Carbide cutting tool、NAS Cutting tool、NAS986 NAS965 NAS897 NAS937orNAS907 Cutting Tools,Carbide end mill、disc milling cutter,Aerospace cutting tool、hss drill’Фрезеры’Carbide drill、High speed steel、Compound Sharpener’Milling cutter、INDUCTORS FOR PCD’CVDD(Chemical Vapor Deposition Diamond )’PCBN (Polycrystalline Cubic Boron Nitride) ’Core drill、Tapered end mills、CVD Diamond Tools Inserts’PCD Edge-Beveling Cutter(Golden Finger’PCD V-Cutter’PCD Wood tools’PCD Cutting tools’PCD Circular Saw Blade’PVDD End Mills’diamond tool. INDUCTORS FOR PCD . POWDER FORMING MACHINE ‘Single Crystal Diamond ‘Metric end mills、Miniature end mills、Специальные режущие инструменты ‘Пустотелое сверло ‘Pilot reamer、Fraises’Fresas con mango’ PCD (Polycrystalline diamond) ‘Frese’POWDER FORMING MACHINE’Electronics cutter、Step drill、Metal cutting saw、Double margin drill、Gun barrel、Angle milling cutter、Carbide burrs、Carbide tipped cutter、Chamfering tool、IC card engraving cutter、Side cutter、Staple Cutter’PCD diamond cutter specialized in grooving floors’V-Cut PCD Circular Diamond Tipped Saw Blade with Indexable Insert’ PCD Diamond Tool’ Saw Blade with Indexable Insert’NAS tool、DIN or JIS tool、Special tool、Metal slitting saws、Shell end mills、Side and face milling cutters、Side chip clearance saws、Long end mills’end mill grinder’drill grinder’sharpener、Stub roughing end mills、Dovetail milling cutters、Carbide slot drills、Carbide torus cutters、Angel carbide end mills、Carbide torus cutters、Carbide ball-nosed slot drills、Mould cutter、Tool manufacturer.
Bewise Inc. www.tool-tool.com
ようこそＢｅｗｉｓｅ Ｉｎｃ.の世界へお越し下さいませ、先ず御目出度たいのは新たな
情報を受け取って頂き、もっと各産業に競争力プラス展開。
弊社は専門なエンド・ミルの製造メーカーで、客先に色んな分野のニーズ、
豊富なパリエーションを満足させ、特にハイテク品質要求にサポート致します。
弊社は各領域に供給できる内容は：
（１）精密ＨＳＳエンド・ミルのＲ＆Ｄ
（２）Carbide Cutting tools設計
（３）鎢鋼エンド・ミル設計
（４）航空エンド・ミル設計
（５）超高硬度エンド・ミル
（６）ダイヤモンド・エンド・ミル
（７）医療用品エンド・ミル設計
（８）自動車部品＆材料加工向けエンド・ミル設計
弊社の製品の供給調達機能は：
（１）生活産業～ハイテク工業までのエンド・ミル設計
（２）ミクロ・エンド・ミル～大型エンド・ミル供給
（３）小Ｌｏｔ生産～大量発注対応供給
（４）オートメーション整備調達
（５）スポット対応～流れ生産対応
弊社の全般供給体制及び技術自慢の総合専門製造メーカーに貴方のご体験を御待ちしております。
Bewise Inc. talaşlı imalat sanayinde en fazla kullanılan ve üç eksende (x,y,z) talaş kaldırabilen freze takımlarından olan Parmak Freze imalatçısıdır. Çok geniş ürün yelpazesine sahip olan firmanın başlıca ürünlerini Karbür Parmak Frezeler, Kalıpçı Frezeleri, Kaba Talaş Frezeleri, Konik Alın Frezeler, Köşe Radyüs Frezeler, İki Ağızlı Kısa ve Uzun Küresel Frezeler, İç Bükey Frezeler vb. şeklinde sıralayabiliriz.
BW специализируется в научных исследованиях и разработках, и снабжаем самым высокотехнологичным карбидовым материалом для поставки режущих / фрезеровочных инструментов для почвы, воздушного пространства и электронной индустрии. В нашу основную продукцию входит твердый карбид / быстрорежущая сталь, а также двигатели, микроэлектрические дрели, IC картонорезальные машины, фрезы для гравирования, режущие пилы, фрезеры-расширители, фрезеры-расширители с резцом, дрели, резаки форм для шлицевого вала / звездочки роликовой цепи, и специальные нано инструменты. Пожалуйста, посетите сайт www.tool-tool.com для получения большей информации.
BW is specialized in R&D and sourcing the most advanced carbide material with high-tech coating to supply cutting / milling tool for mould & die, aero space and electronic industry. Our main products include solid carbide / HSS end mills, micro electronic drill, IC card cutter, engraving cutter, shell end mills, cutting saw, reamer, thread reamer, leading drill, involute gear cutter for spur wheel, rack and worm milling cutter, thread milling cutter, form cutters for spline shaft/roller chain sprocket, and special tool, with nano grade. Please visit our web www.tool-tool.com for more info.
留言列表
