石墨球 的英文怎麼說
中文拼音 [dànmòqiú]
石墨球
英文
graphite nodule-
How is timing controlled to prevent nodular iron fade
如何控制球鐵孕育時間?防止石墨退化5k shipbuilding - spheroidal graphite iron ductile iron 5k angle valves
造船.球型石墨鐵These graphite spheroids are know as “ crack arresters ” in the ductile iron industry because of their ability to stop cracks in their tracks
在球墨鑄鐵行業內,這些石墨球稱為「裂縫終結者」 ,因為它們具有阻止斷裂的能力。The metamorphous graphite in the section center of heavy section s. g. iron castings is superspheroidal graphite, and not the product of degeneration along the direction from shperoidal graphite to vermicular or flake graphite
大斷面鑄件中心的變態石墨是過球化石墨,而不是球狀石墨向蠕蟲狀石墨或片狀石墨方向衰退的產物。When the two reactants were simply mixed by crush, they reacted violently and produced carbon spheres with a diameter of 50 - l00nm and sodium chloride ( nacl ) was encapsulated within the outer amorphous carbon shells, which could be confirmed by sem and tem. by annealing at 1400 ? to drive the encapsulated nacl away, hollow carbon spheres were left with a novel mesoporous structure, as presented in hrtem
實驗中將兩種反應物通過直接擠壓混合后加熱反應,得到的無定型球狀碳材料經tem照片證實直徑為50 - 100納米,而且中間包裹氯化鈉( nacl )顆粒; xrd等結果顯示,高溫退火併徹底清除nacl后形成的中空碳球已經部分石墨化。“ dianond " brand ductile iron pipes are peoduced in accordance with the international standard iso2531 or the british standard bs4772, we provide service od zing coating, internal lining of cement and flame plation of bitumen, if required
「鉆石」牌球墨鑄鐵管按照國際標準iso2531 /英國標準bs4772生產,根據用戶需要進行噴鋅、內壁襯水泥、瀝青塗料等服務。It has been discovered that ( 1 ) in the region between 100 - 350 the friction coefficient is lowering along with the swing of temperature ; ( 2 ) the friction coefficient is the highest at the temperature of 500, and adhesive wear occurred ; ( 3 ) the global graphite grain layer appeared at the surface of wear scar at 450n and 300, and played an extremely good effect of lubrication, thus makes a fairly lower wear at the temperature of 300
發現: ( 1 )在100 ~ 350區間,隨溫度的升高,摩擦因數在降低; ( 2 )在500時,摩擦因數最高,且發生了粘著磨損; ( 3 )在450n , 300時,磨痕表面出現了球狀的石墨顆拉層,這起到了極好的潤滑作用,使得300時,磨損較低。The strength of extension of low carbon ductile cast iron can reach 750mpa in casting state, the impact ductility can reach 20j / cm2. the diameter of graphite nodule is 5 - 20 ( am, the base body is consisted of pearlite -
低碳球鐵在鑄態下的抗拉強度可達750mpa ,沖擊韌性可達20j cm ~ 2 ,其中石墨球直徑在5 20 m ,基體以珠光體為主,有少量的鐵素體與滲碳體。Curiously, in addition to graphite and diamiond, the existence of a new kind of elemental carbon in the form of football shaped molecules was predicted as early as the 1960s, but was not confirmed until 1985
在1960年代已有人預言,碳除了以石墨和金剛石即鉆石的形式存在外,並能以足球的形式存在,其後在1985年獲得證實,並引起一連串籠形碳分子即富勒烯的科學研究。A little ferrite and cementite, through the analysis of the strengther and ductiler, we draw the conclusion that this is very important in reality, observing the graphite nodule in sem and tem, there are many spheroiding element and anti - spheroiding elements in the core and edge of graphite nodule, they form the oxides sulphide and nitride. we draw the conclusion that they may be the core of graphite nodule
在掃描電鏡( sem )與透射電鏡( tem )上觀察石墨球,與傳統石墨球相比低碳球鐵的石墨球呈細小點狀分佈,球墨中心聚集有較多的球化元素而在邊緣處分佈有反球化元素。石墨球中心存在有氧化摘要一物、硫化物以及氮化物等組成的復雜的化合物,經分析認為它們是球狀石墨形核的有效核心。The present problems and further research directions in the preparation high density and strength carbon / graphite materials from mesocarbon microbeads were put forth
並對中間相炭微球制備高密高強炭石墨材料中存在的問題和研究方向提出了自己的見解。In order to make investigators know about the current research state of preparation of the carbon / graphite materials with high density and strength from mesocarbon microbeads, and direct the research, development and production, in this review, the influence of preparaed mesocarbon microbeads from various raw materials and methods of preparation, ball diameter of carbosphere, preoxidation temperature and time, moulding pressure and time, heat treatment temperature and heating rate, holding time on the mechanical properties and microscopic structure of carbon / graphite product were discussed by us
摘要為了對中間相炭微球制備高密高強炭石墨材料的研究現狀有所了解,並且對實驗和實際生產起到指導作用,本文通過參閱大量中外文獻,討論了不同原料及制備方法制得的中間相炭微球、炭微球的球徑、預氧化溫度及時間、成型壓力及時間、熱處理溫度及升溫速率、保溫時間對炭石墨製品的力學性能及微觀結構的影響。Vermicular iron has graphite shape between flake graphite of gray iron and nodular graphite of nodular iron, tensile strength higher than that of gray iron by 70 %, and some lower than that of nodular iron, so is a sort of excellent material for structural parts
摘要蠕墨鑄鐵的石墨形狀介於灰鐵的片狀石墨與球鐵的球狀石墨之間,抗拉強度高於灰鑄鐵70 % ,略低於球墨鑄鐵,是結構件的優良材料。It was showed that the basic varying law of graphite morphologies is as follows : with increasing of growing rate of graphite crystal along direction of [ 0001 ], the morphologies of graphite change from flack shape vermicular shape spheroidal shape explosive shape superspheroidal shape
研究得出,鑄鐵中石墨變態的基本規律是:隨著石墨晶體沿[ 0001 ]方向生長速度的增加,石墨由片狀石墨蠕蟲狀石墨球狀石墨開花狀石墨過球化石墨。Foundry products - spheroidal graphite cast iron castings - characterisation of the shape of the graphite by image analysis
鑄件.球墨鑄鐵件.用圖像分析法表徵石墨形狀The low - enriched uranium fuel consists of half - millimetre - sized particles of uranium dioxide encased in graphite and silicon carbide, which in turn is encased in a graphite ball
低濃縮的鈾燃料為包裹在石墨和碳化硅中半毫米大小的二氧化鈾微粒,石墨和碳化硅則被包裹在石墨球中。In order to avoid eutectic carbide, improve nodularity, increase nodule count and increase mechanical properties, three times of inoculations were adopted in the centrifugally cast nodular iron pipes production : a ) inoculation in ladle ; 2 ) pouring stream inoculation ; 3 ) in - mold inoculation
摘要在離心鑄造球墨鑄鐵管生產中,為防止共晶滲碳體析出,改善球化,增加石墨球數,提高力學性能,採用了三次孕育: ( 1 )包內孕育; ( 2 )澆注時隨流孕育; ( 3 )型內孕育。Unfired pressure vessels - requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
非燃燒壓力容器.球形石墨鑄鐵制壓力容器和壓力零部件的設計和生產要求Abstract : it was verified through experiment and measurement that there was growth phenomenon taking place with nodular iron castings after graphitizing annealing at low temperature. the emergence mechanism and reason of the “ annealing growth nature ” was dicussed, and its prevention measures was proposed
文摘:通過試驗和測試,證實了球鐵件經低溫石墨化退火后存在的生長現象,並對這種「退火生長性」產生的機理及原因進行探討,提出了防止措施。The sparkle gap is comprised of a pair of spheroidal graphite electrode with the feature of adjusting easily
火花間隙由一對石墨球面電極組成,石墨電極調節靈活。分享友人