壓制密度 的英文怎麼說
中文拼音 [yāzhìmìdù]
壓制密度
英文
pressed density-
The powder was pressed through molding and cold isostatic pressure, which increased the density and decreased the uneven distribution of stress inside the briquet to make the ceramic briquet equally compact
粉料採取模壓和冷等靜壓相結合的方法壓制,增大了坯體內部的密度並減少了應力的分佈不均,得到均勻緻密的陶瓷坯體。To meet the processing requirements before sintering, the pressed briquet was pre - calcined at 1150 to make it possess adequate processing strength at first and then was shaped through precise turning on the numerical control lathe according to the design diagram of the femoral head prostheses of partial hip joint
為滿足燒結前坯體加工的要求,壓制后的坯體在1150預燒,使其具備一定的加工強度,然後按照半髖關節股骨頭假體的形狀尺寸設計圖在數控車床上進行精密車削成型。Carbonaceous materials used in the production of aluminium - cold and tepid ramming pastes - preparation of unbaked test specimens and determination of apparent density after compaction
鋁生產用含碳材料.冷和微熱搗實糊料.非烤試驗樣品的制備和壓實后表觀密度的測定In this paper, research and manufacture work on high efficiency high power density high - voltage high - power dc power is undertaken on the basis of basic theories and past production. by inquisition the basic theory and project of sreies - parallel resonant converter witch is a soft - switch converter was selected to outspread research and design work
本文是在吸收前人研究成果的基礎上,理論聯系實際,針對高效、高功率密度、高壓大功率直流電源展開的研製工作。在經過大量的實際調研工作的基礎上,選擇了一種軟開關變換器(移相控制的串-並聯諧振變換器)的技術方案,並圍繞該方案展開理論研究和實際的設計工作。The distance of the single - row curtain grout hole is between 1. 4 to 1. 8 meter, and 2. 0 meter is suitable for the double - row curtain ; the grouting pressure generally is 1. 0 to 1. 5 mpa at the first three grout compartment, then grouting pressure of under the fourth control in 4 to 5 mpa ; for mast grout compartments, a water - cement ratio of 2 or 1 may used in the first grouting
鉆孔密度也由原來的0 . slm / mz降至o . 64n擴mz ,節約工程投資447 . 35萬元。 6 、單排帷幕的孔距在1 . 4一1 . 8m之間,雙排帷幕的孔距以zm為宜;灌漿壓力在地表以下前三段一般為1一1 . smpa ,第四段以下按4一smpa控制;對大部分孔段而言,開灌水灰比可定為2或1 。In this paper, nanosized al2o3 ceramic particles were chose as reinforcing phase. enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating, the copper - matrix composite was developed by hot - press sintering process of the composite powder. the composition, microstructure, hardness, density and dry sliding wear property of the new material have been studied
研究路線為:選用納米級al _ 2o _ 3陶瓷顆粒作為增強相,在超聲波的環境中用化學鍍的方法完成對納米al _ 2o _ 3陶瓷顆粒表面的金屬銅包覆,採用熱壓燒結成型技術以復合粉末為原料制備成納米al _ 2o _ 3陶瓷顆粒增強銅基復合材料,研究分析復合材料的成分、組織結構、硬度以及緻密度,對試樣進行了干滑動摩擦磨損實驗。The research on the properties of the copper nanoparticles / paraffin thermosensitive composite materials reveals : the thermal sensitivity and the thermal expansion are " aried by the cempress moulding in heat condition with the change in density ; the thermal sensitivity is varied by the mechanical milling with the change in particle shape and particle dimension ; the mass ration of copper and paraffin in the composite materials also affects the thermal sensitivity, the thermal expansion and the thermal stability with the change in copper nanoparticles and paraffin interface
對復合顆粒進行壓力成型后制備的復合材料進行性能測試分析表明:熱壓成型工藝通過改變復合材料的緻密度來影響材料的熱敏性和熱膨脹性。高能球磨工藝主要通過改變球磨時間使銅粒形狀和粒徑發生變化來影響復合材料的熱敏性,以及改變銅粉和石蠟的質量比使納米銅粒和石蠟的復合界面發生變化來影響材料的熱敏性、熱膨脹性和熱穩定性。Design of hot - press fuzzy controller for medium - density fiberboard
中密度纖維板熱壓機模糊控制器的設計The experimental data has been used to validate pdm and low temperature sintering mechanics. the advantage and disadvantage of pdm have been discussed also. for the first time, the pdm is used to study the low temperature sintering mechanics of uo _ 2, and the research results indicate : 1
3 、基於燒結頸長大速率與緻密化動力學方程得出,影響二氧化鈾低溫燒結的因素有原始粉末粒徑、粉末堆積方式、坯塊原始密度、燒結溫度、燒結時間、燒結氣氛等;粉末壓坯一定時,燒結溫度、燒結時間和燒結氣氛就成為控制低溫燒結的關鍵因素。The surface loading of the mountains and the associated root of thickened crust produce horizontal deviatoric tension in the strong upper crust. in contrast, the deep, dense lithospheric root and its associated downflexing of the surface produce horizontal compressive deviatoric stress in the strong near - surface layer. the actual state of stress in the strong layer of the upper crust is the combined effect of these two opposite stress systems together with bending and other local and regional stresses such as due to ridge push
模擬結果表明:由於均衡機制,造山帶下部的低密度山根促使地殼隆升、造山,山根是地殼剛性層中張性構造應力的主要力源;與此相反,冷的高密度巖石圈向軟流圈插入、拆離、下沉,從而形成巖石圈根,它引起擠壓造山和巖石圈地幔物質的重新調整,也是地殼剛性層中擠壓性構造應力的主要力源。Making use of many layers composite technique and heat press technique to make artificial skull, through a series of performance testes ( including elongate performance, compress performance, curve performance, concussion performance, lay cut performance, concussion cut performance ), making use of drainage method to calculate its average density, which is 1. 25kg / m3, and combustion method to calculate its content of macromolecule, which is 57. 7 %
利用多層復合技術和模壓技術制備來的人工顱骨復合材料,通過對其一系列性能測試(包括拉伸性能、壓縮性能、彎曲性能、沖擊韌性、層間剪切強度和沖擊剪切強度等) ,證明了該復合材料具有良好的物理機械性能。採用排水法計算復合材料的平均密度為1 . 25kg m ~ 3 ,採用灼燒法計算復合材料的含膠量為57 . 7 ,證明該復合材料比強度較高。In this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on the experimental fo rm ulas are drawn respectively between viscosity 、 density 、 specific heat and temper ature the function of viscosity to temperature and pressure is deduced the com parative analysis among the new oil 、 used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent these conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar
該文對某軍用履帶裝甲車輛綜合傳動系統使用的液壓油進行了試驗分析,得出了這種液壓油的粘度、密度、比熱與溫度的經驗關系式,推導出了粘度在溫度、壓力綜合作用下的函數關系,並對新油、舊油、普通抗磨液壓油的粘度進行了對比分析,這對于使用這種液壓油的傳動系的分析計算和制定相關軍用履帶裝甲車輛的使用規范提供了重要的理論依據Abstract : in this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on the experimental fo rm ulas are drawn respectively between viscosity 、 density 、 specific heat and temper ature the function of viscosity to temperature and pressure is deduced the com parative analysis among the new oil 、 used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent these conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar
文摘:該文對某軍用履帶裝甲車輛綜合傳動系統使用的液壓油進行了試驗分析,得出了這種液壓油的粘度、密度、比熱與溫度的經驗關系式,推導出了粘度在溫度、壓力綜合作用下的函數關系,並對新油、舊油、普通抗磨液壓油的粘度進行了對比分析,這對于使用這種液壓油的傳動系的分析計算和制定相關軍用履帶裝甲車輛的使用規范提供了重要的理論依據Firstly, the comparation study between the wedge pressing and the contour forging has shown that the transverse deforming initiated from the surface of the preforms. when the superficies reached the moulding wall, the deforming moved downwards as the high - direction deforming increased, till the moulding chamber was full of stock ; the transverse deforming of the moulding pressing stock initiated from the center of the stock then surned into a drum - type. the distribution of the density and hardness of the high - direction indicated that the wedge pressing acquired a better ability of pressing penetration
首先對比研究了楔形壓制工藝與模壓緻密化工藝,發現楔壓坯料的橫向變形從上表層開始,當上表面與模壁接觸后,隨著高向變形量的增加逐步向下移動,直至坯料充滿模腔;模壓坯料的橫向變形從坯料中間開始,形成鼓形。高向的密度、硬度分佈表明楔壓比模壓具有更好的壓透能力。Unbound and hydraulically bound mixtures - test methods for laboratory reference density and water content - vibrocompression with controlled parameters
鬆散的和液壓粘合的混合料.實驗室參考密度和水含量的測試方法.有控制參數的振動壓縮While adding 1 % binder the preferable target was produced, and the density was 4. 89g. cm - 3, which was 88 % of the theoretic density of the licoo _ 2 with ar as the sputtering gas, the technics of rf sputtering to produce the licoo _ 2 film were studied systematically
在冷壓燒結方法制備licoo _ 2靶材的過程中,燒結前添加了不同量粘結劑,就綜合純度和粘結性能兩方面考慮,加入1 %的粘結劑較為理想。所制備的licoo _ 2靶材密度為4 . 89g / cm3 ,達到licoo _ 2理論密度的88 % 。Secondly, the effect of transverse deforming on the property of the wedge pressing was studied. the results showed that : the wedge pressing stock with the transverse deforming amount of 10 % acquired the best performance. the highest density got the biggest rate of slope while with the amount of 30 % the curve was more some special structure and performance as following : the large porosities was crushed into small or linear ones with the high - direction deformation amount of 20 % ; as the increasing of the high - direction deforming, the particles got a further deforming, the porosities got a further crushing, the small porosities were mergered by the large ones and the former then disappeared ; when the amound reached 60 %, the quantity of the porosities would obviously decrease which made the materials compact, the microstructure more uniform and the density and hardness curves more horizontal, the relative desity could reach 99. 7 %, the tensile strength b of the as - compacted samples reached 408mpa with the yield strength s teached 289mpa and the elongation percentage reached 13. 6 %. in addition, the microstructure of the wedge pressing stock under the pressing temperectureof 450 was uniform, the porosities and the boundries of the grains basically disappeared and the conjunction between particles was great
採用雙向楔形壓制,大尺寸噴射沉積5a06鋁合金楔壓坯的組織和性能變化具有如下特點:當高向變形量為20 %時,大的孔洞變形破碎為小的孔洞,或呈線狀孔;隨著高向變形量的增加,顆粒進一步變形,孔洞進一步破碎,大孔「吞併」小孔,小孔塌陷並逐步消失;當高向變形量達到60 %時,孔洞量大為減少,材料基本緻密,組織趨于均勻,楔壓坯料的密度、硬度變化曲線接近水平線,坯料的相對密度達99 . 7 % ,抗拉強度_ b = 408mpa ,屈服強度_ ( 0 . 2 ) = 289mpa ,延伸率= 13 . 6 % ;對比其它的壓制溫度,在450楔形壓制的坯料組織均勻,孔洞及顆粒邊界基本消失,顆粒之間冶金結合良好。The relative density of the powder flan was well controlled by design of the press process. the property of the flan was good
本文通過壓制工藝的設計,有效的控制了mo - cu粉末生坯的壓制密度,得到了質量良好、相對密度符合預先設計要求的mo - cu粉末壓制生坯。Abstract : based on the analysis of the pressing properties of loading materials for initiating explosive device, a system of automatic explosive pressing device was developed with the theory of intelligent control, so the automation of the pressing process was achieved, and the density identity of loading materials was enhanced significantly
文摘:在分析火工品藥劑壓藥特性的基礎上,結合智能控制理論,研製了一臺自動壓藥機系統,實現了壓藥工藝過程的自動化,大大提高了壓藥密度的一致性。The technique can avoid produce ti / al chemical compound in high temperature. the chemical compound would increase the difficulty of pressing. the research on vacuum degassing and temperature of pressing can acquire the ideal composite powders of highly
對ti / al復合粉進行真空脫氣及低溫熱壓制可以降低坯料中空氣含量並提高粉末顆粒的界面結合強度,同時避免高溫下生成tial基化合物增加緻密難度,對真空脫氣及壓制溫度進行研究,獲得理想的緻密度極高的復合粉末。分享友人