Design and properties of Bi-Sn-In ternary fusible alloys;
Bi-Sn-In控温易熔合金的设计与性能
Temperature-dependent fuse is one of the important parts in (smoke) fire dampers, and the fusible alloy is the key element of the fuse.
本试验研制的高温、低温两种易熔合金 ,焊接性能良好 ,在 2 kg弹簧压力下 ,分别于 70°C和 2 80°C熔断 ,完全符合 (排烟 )防火阀的标准要
Fusible alloys are the alloys with the melting point below 232°C (meltingpoint of Tin), and normally composed by bismuth, lead, tin, and indium elementsin different proportions depending on the desired properties.
易熔合金,是指熔点低于232℃(Sn的熔点)的低熔点合金;通常由Bi、Sn、Pb、In等低熔点金属元素组成。
In precise investment casting field,generally,a metal mold must be first produced to cast wax models.
针对精密熔模铸造中采用石蜡为易熔材料,生产过程须制作金属易熔模模具,加工周期长、生产成本高等问题,提出了以菲尔德合金为易熔材料,运用RP技术制作易熔模模具,快速制造精密熔模铸件的生产方法,并提供了较详细的制作步骤。
Aimed at some problems of YOT51 and R17K hydraulic couplers occurred frequently in operation, for example, blocking of scoop tubes, fusion of fusible plugs, burning of bearings, lost of the working oil pressure, and vibration of hydraulic couplers, the paper analyzes causes of these faults, and puts forward some improvement methods.
对17K1-E和YOT51型液力偶合器在实际运行过程中经常出现的勺管卡涩、易熔塞熔化、轴承烧损、工作油压消失以及偶合器振动等故障进行了原因分析,并提出改进措施。
In addition,the effect of MgO,CaO and Al_2O_3 on T,of the low temperature glass was tested and analyzed.
用废玻璃粉、B_2O_3、ZnO 和 P_2O_5等氧化物为主要原料,研制低粘接温度的无铅环保型易熔玻璃。