melting of metal 中文意思是什麼
melting of metal
解釋
金屬熔化-
Some other defects in castings are well - defined cracks and hot tears that develop during solidification, under combination of stress concentration from uneven contraction and the metal ' s low strength at near - melting temperatures
鑄件內部的其它一些缺點是，凝固過程中，在不均勻收縮造成的應力集中和接近熔點溫度下金屬的低強度的綜合作用下，出現的清晰裂縫和熱撕裂。 -
There are the production lines established of intermediate - frequency melting, silicasol shuck, precision casting and metal ceramic, and 250 universal devices suck asvacuum melting electric furnaces, high - temperature and intermediate - temperature heat treatment electric furnaces, digitai - control lathes, milling and drilling machines, coreless millers, spherical surface millers, standing milling machines and so on, lt has established the central measuring roomm physicallab, chemical lab, metallic phase lab, crack detection test lab, seat ring lab, rocker lab and ducgt trestle lab, our esported gas engine valve seat to america was rewarded the second prize in terms of sichuan high - quality product
建有中頻熔煉真空熔煉硅膠溶模精密鑄造粉末冶金生產線。有中頻電爐真空熔練電爐高中溫熱處理電爐數控車床鉆銑床無芯磨外園磨立磨等通用設備250臺套。有中心計量室物理化學金相探傷檢測及座圈搖臂導管臺架實驗室。 -
Is a hard, brittle, corrosion - resistant, gray to white metallic element extracted from wolframite, scheelite, and other minerals, having the highest melting point and lowest vapor pressure of any metal
顏色呈灰色或棕黑色，硬度高，延性強，熔點極高，常溫下不受空氣侵蝕主要用途是製造燈絲和高速切削合金鋼，各種鎢電極，也用於光學儀器，化學儀器方面。 -
The wax setting and casting process is complicate process with a series of procedures, including model creating, spruing and construction, rubber mold vulcanization and cutting, wax models injection, stone setting in wax model, wax tree creating, investing, investment mold burning - out, metal melting and pouring, casting cooling and divesting, etc
蠟鑲鑄造是一個多工序的復雜工藝過程，包括母版製作、開設水線、製作橡膠模、製作蠟模、寶石鑲嵌到蠟模、種蠟樹、製作石膏型、石膏型脫蠟焙燒、金屬熔煉澆注、飾件冷卻清理等。 -
Study on the relationship between the melting point the hardness of the alkaline earth metal oxide and the electron structure
堿土金屬氧化物熔點和硬度變化規律與電子結構的關系 -
The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。 -
If coreless melting furnace mainly for steel ， alloy steel ， cast iron ， and other ferrous metal materials and stainless steel ， copper ， aluminum ， zinc and other non - ferrous metal materials melting ， melting with high efficiency ， energy - saving ， metal components uniform ， burning less temperature or block ， simple operation ， easy to supporting the advantages of production lines
中頻無芯熔煉爐主要用於鋼、合金鋼、鑄鐵等黑色金屬材料以及不銹鋼、銅、鋁、鋅等有色金屬材料的熔煉，具有融化效率高、節電、金屬成分均勻、燒損少、溫升塊、操作簡單、易於配套生產線等優點。 -
Gum metal alloys ? composed of titanium, tantalum, niobium, zirconium and sometimes vanadium, together with a minimal leavening of oxygen ? are consolidated into ingots under high heat and pressure but with no melting
膠性金屬合金是由鈦、鉭、鈮、鋯（有時候還加上釩） ，全部一起與微量的氧氣作用，在高溫高壓下（但不使之熔化）固化成鑄錠。 -
But some problems are occurred, such as low bath temperature, difficulty in lime melting, slag overflow at vessel mouth, increase of metal consumption, difficulty in dephosphorization and low hitting rate at the final
在生產中出現熔池溫度低、廢鋼和石灰不易熔化、爐口溢渣、金屬消耗增加、脫磷困難、終點命中率低等問題。 -
The dust collecting equipment is one of the well - developed air pollution prevention and control equipment. it has been widely applied in the various power generating, steel, metal melting and cement industries
集塵設備乃是目前已成熟可用的空氣污染防制設備中之主要項目，而被廣泛地應用在各種工業上，包括發電設施、煉鋼、金屬熔制與水泥業等。 -
The stove liner of blast furnace is damaged seriously for the influence of iron water melting metal, chemical corrosion of stove residual and furnace lump in the middle and later term
摘要由於鐵水熔融金屬以及爐渣的化學侵蝕和爐瘤的影響，高爐中後期爐襯受損嚴重。 -
As well - known, there is an induced current on the surface when metal material is in the high frequency electromagnetic field, since tending to skin heating effect to make the temperature of metal material surface go up promptly, surface beginning melt when temperature reaches the melting point of metal, metal material is heated up continuously by surface to core till the metal droplet of melting
自懸浮定向流技術制備金屬納米微粒與一般的蒸發冷凝法有所不同，其原理是：金屬材料在高頻電磁場中產生表面感生電流，由於趨膚加熱效應使得金屬材料表面的溫度迅速升高，當溫度達到金屬的熔點時表面開始熔化，通過熱傳導作用金屬材料由表面到芯部不斷加熱直至熔化成金屬液滴。 -
The method combined the electroplating at low temperature wiht metallurgy using metal powders which have low melting first, a lot of compunf slices by electroplating. and then we link a number of slices together by metallutgy
該復合片作為金剛石圓鋸片刀頭的骨架與磨料，再通過低熔點金屬粉末粘結製成金剛石圓鋸片刀頭。 -
Much attention has been paid on pure or doped zirconia thin films because of their high melting point, low heat conductivity, high ionic conductivity and chemical durability. in the case of metal - oxide - semiconductor ( mos ) devices and high - temperature superconductor ( hts ) wires, zirconia epitaxial thin films are promising buffer layers and have been intensely studied in the past two decades
純的或摻雜的氧化鋯薄膜因其高熔點、低熱導率、高離子導電能力和高溫化學穩定性而受到相當的重視，而且氧化鋯外延薄膜在金屬氧化物半導體（ mos ） 、高溫超導帶材等領域的應用受到越來越多的關注。 -
A metallurgical coating process in which iron or steel is immersed in a powder of another metal, such as zinc, chromium, or aluminum, and heated to a temperature below the melting point of either
滲碳處理一種冶金鍍膜工序，在此工序中把鋼或鐵浸入另一種金屬如鋅、鉻或鋁的粉劑里，並加熱至這一金屬的熔點溫度以下 -
Mining industry : metal melting ( transportation and circulation of electrolyte ) ; washing of liquid waste
礦業：金屬熔煉（輸送及循環電解液） ；廢液的洗滌處理。 -
Molecular dynamics simulations of the heating and melting processes of metal cu
金屬銅升溫熔化過程的分子動力學模擬 -
Standard of inspection and measurement of ray photographing for metal melting meld seam of building installation engineering
建築安裝工程金屬熔化焊焊縫射線照相檢測標準 -
The emphasis and novelty of this research is to develop a scientific, quantified criterion based on the web hot - working die material selection and application expert system accordance to the invalidation resistance index system to break through the traditional material selection according to experience. the research is based on the results of the national machine industry technique and combing the die applications and intense experience of expert, network techniques, system engineering etc. knowledge. hammer forge dies, pressing forge dies, casting dies or extrusion dies of high melting point metal al, mg, cu and their alloys are largely used
本研製工作的主要工作重點和新穎之處，是在國家機械工業技術發展基金委員會研究成果的基礎上，結合國內外模具行業專家經驗與專著以及作者在模具應用強化等方面的經驗和在專家系統、網路技術、系統工程等方面的知識，力圖打破行業長期按經驗選材的傳統做法嘗試研製出一個以「失效抗力指標體系」思路為依據的科學化、判據量值化的「基於網路的熱作模具材料選擇和應用專家系統」 。 -
In this model, the velocity was controlled below50 m / s so that it is easy that the temperature of outlet propellant exceeds 1000k. by the measure of advancing the melting point of metal panel to 3000k, the temperature of outlet propellant even could be close to the very high temperature of the metal panel. it is very active to improve the capability of the whole propulsion system
在本文模型中，將管道內工質的流速控制在50m / s ，熱交換器的出口工質溫度就能夠提升至1000k以上;提高換熱器高溫加熱段的金屬平板熔點到3000k以上，完全可以將工質出口溫度提升至接近金屬平板的溫度，這樣可以大幅度提高推進系統的性能。
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