排序方式: 共有35条查询结果,搜索用时 31 毫秒
1.
Long metal fibers were manufactured in horizontal lathe with a multi-tooth tool. Based on the coarse antler surface structure of copper fibers, a new sintering technology was put forward to manufacture a kind of oriented linear copper fiber sintered felt. The sintering mechanism of oriented linear copper fiber sintered felt was studied. Compared with sintered copper-wire felt, the characteristics of sintered copper-fiber felts were analyzed in details. Owing to the coarse antler surface structure of copper fibers, oriented linear copper-fiber felt was sintered under the condition ofmicro/nano scale range, and copper fibers easily bonded together in the sintering process. Microchannels with micro-scale coarse antler surface structure were constructed. These characters give oriented linear copper fiber felt some new merits: high filtration accuracy, high flow capability, low resistance loss, good capability to resistance pressure, stable and uniform pore, high specific surface area. The properties of oriented linear copper fiber sintered felt were analyzed. 相似文献
2.
3.
园林建设是我们国家的基本建设项目之一,近年来园林景观工程的数量一直在持续攀升阶段,随着建筑行业的不断发展,园林工程的造价也在迅速的提高。想要园林建设健康的发展下去,我们必须注意对园林工程造价的控制和管理,制定一套行之有效的具体措施从根本上控制园林工程造价现今所存在的问题。 相似文献
4.
5.
6.
7.
8.
9.
10.
不同工况飞灰重金属和PAHs特性试验研究 总被引:5,自引:0,他引:5
针对220t/h燃煤循环流化床电站锅炉研究锅炉负荷和钙硫比对电除尘器 飞灰的粒径分布、常量化学成分、微量元素和多环芳烃的影响。结果表明:60%以上飞灰粒径小于100μm,负荷增大,粒径和当量粒径增大。Ca/S比对飞灰粒径分布影响较小,锅炉负荷和Ca/S比增大,飞灰化学成分SiO2、Al2O3减少,CaO和SO3增加,各微量元素含量分布规律为:Hg<Cd<Pb<Cu<Ni<Cr。随着锅炉负荷和钙硫比升高,多环芳烃各类和含量减少。 相似文献