wedge press meaning in Chinese
楔调压力机
楔式热模锻压力机
Examples
- Finally , the fracture behavior of the wedge pressing stock under different temperatures was studied . as a result , the wedge pressing under 450 could avoid the step on the surface of the stock and
室温拉伸微观断口为韧窝和撕裂棱混合型韧性断口,材料属延性断裂。 - 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
采用双向楔形压制,大尺寸喷射沉积5a06铝合金楔压坯的组织和性能变化具有如下特点:当高向变形量为20 %时,大的孔洞变形破碎为小的孔洞,或呈线状孔;随着高向变形量的增加,颗粒进一步变形,孔洞进一步破碎,大孔“吞并”小孔,小孔塌陷并逐步消失;当高向变形量达到60 %时,孔洞量大为减少,材料基本致密,组织趋于均匀,楔压坯料的密度、硬度变化曲线接近水平线,坯料的相对密度达99 . 7 % ,抗拉强度_ b = 408mpa ,屈服强度_ ( 0 . 2 ) = 289mpa ,延伸率= 13 . 6 % ;对比其它的压制温度,在450楔形压制的坯料组织均匀,孔洞及颗粒边界基本消失,颗粒之间冶金结合良好。 - In this dissertation , al - si / sicp composites brake rotor with diameter of 1200mm was firstly fabricated by a novel spray deposition technology , and simultaneously coupled brake pad was prepared by a novel dry - powder processing route , termed as two - step pressing process . a wedge pressing technology was developed to densify the as - produce al - si / sicp composite brake rotor
本文首次采用喷射沉积技术制备了直径达1200mm的al - si / sicp制动盘,同时采用二次压制工艺制备出了配套的合成闸片,研究了制动盘的楔压致密化技术、机理,复合材料摩擦磨损性能及机理。 - As an advanced materials preparation technology , spray - deposition has shown remarkable superiority in producing large - sized alloys and metal matrix composites . however , the spray deposeted preforms usually contain a certain quantity of porosity . besides , the oxide films on the surface of the particles lead to week metallurgic conjunction between the particles . in order to obtain an ideal structure and performance , the porous preforms need further densifying and plastical forming . in this paper , a new technology named wedge pressing was used to densify spray - deposeted 5a06 aluminium alloy , in which the large deformation can be obtained through the sum - up of local deformation and multi - step small deformation . this method can also solved the problems in traditional processing and greatly decreased the producing cost . what ’ s more , the reserch on the wedge pressing desification rules about the large - sized spray deposeted preforms was significant it was vital not only to the further densification of the prefoums but also to the further research on plastical deforming the research was also benefit to the industrialization an the application of the spray deposeted porous materials
坩埚移动式喷射沉积技术作为一种先进的材料制备新技术,在制备大尺寸合金及金属基复合材料方面具有显著的优越性。然而喷射沉积坯件特别是大型坯件通常存在一定量的孔隙,颗粒表面存在一定量的氧化膜,颗粒之间未能完全达到良好的冶金结合状态,因此需要进行后续致密化和塑性变形才能获得理想的组织和性能。本文采用一种新型的楔形压制工艺,即通过局部变形、多道次小变形累积实现大变形的致密化加工方法,对喷射沉积多孔坯料进行后续致密化和塑性变形,很好地解决了传统加工工艺的难题,大大降低了生产成本。 - 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
首先对比研究了楔形压制工艺与模压致密化工艺,发现楔压坯料的横向变形从上表层开始,当上表面与模壁接触后,随着高向变形量的增加逐步向下移动,直至坯料充满模腔;模压坯料的横向变形从坯料中间开始,形成鼓形。高向的密度、硬度分布表明楔压比模压具有更好的压透能力。