high-density pressing 中文意思是什麼
high-density pressing
解釋
高密度坯塊-
Back covered porous brick has been developed in the late period of 1990 ' s, and is produced by semi - dry - pressing method. it has such many advantages as high production efficiency, energy saving, high density, beautiful appearance, high strength, easy bricklaying, and can save 1 / 3 masonry mortar compared with solid brick
盲孔多孔磚是20世紀90年代後期研製成功的、用半干壓法壓製成型的封底多孔磚，它生產效率高，節約能耗，產品緻密，外形好，強度高，易砌築，用於砌體工程時，可節約1 3砂漿。 -
Have been put into use and upgraded for many years, perfect quality and tehnology obtained day by day. introduced hot pressing high frequency adhesive equipment and high density sewing machines are used to make the body of airboat, the parts of the body is sewed together in high density before they are adhesived by hot high frequency, three strings used as safety belt are added to the body, the clothe for the body has been strictly examined to ensure no gas escaping
遙控航空廣告飛艇艇身採用先進的進口導軌輥壓高頻熱合機及高密腳工業縫紉機承製。艇體在艇瓣熱合之前先用結實的線將合線緊密縫合，然後用高頻熱合機熱合，並在艇體上加制了三道束身安全腰帶，艇體布料經過嚴格的光透檢漏法嚴查，確保不漏氣。 -
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。 -
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。 -
Thirdly, magnet can get high density under lower pressure easily, using heating - pressing process
與普通壓制工藝相比，溫壓工藝更有利於在低壓力下得到高密度的磁體。
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