【摘 要】
:
我厂自制一台大型换热器筒体与管束装配工装 ,上面配有一卷筒轴 (图 1) ,绳槽所绕钢丝绳牵引力为 30t,绳槽上固定压板螺栓孔为 4 0mm深 ,原设计要求 4 5钢锻件。讨论方案时 ,既
【机 构】
:
济南市压力容器厂,济南市压力容器厂 (250022),(250022)
论文部分内容阅读
我厂自制一台大型换热器筒体与管束装配工装 ,上面配有一卷筒轴 (图 1) ,绳槽所绕钢丝绳牵引力为 30t,绳槽上固定压板螺栓孔为 4 0mm深 ,原设计要求 4 5钢锻件。讨论方案时 ,既要满足使用要求 ,又要降低生产成本 ,提出改用焊接结构件 ,中间段主轴395mm×194 0mm部分用
I plant a large self-made heat exchanger tube and tube bundle tooling, equipped with a reel shaft (Figure 1), the rope around the winding rope traction 30t, fixed on the rope groove bolt hole 40mm deep, the original design Require 4 5 steel forgings. Discussion program, it is necessary to meet the requirements, but also reduce the cost of production, put forward to switch to welded structural parts, the middle section of the main shaft 395mm × 194 0mm part
其他文献
磁共振是前列腺癌的最佳影像学检查方法 ,但磁共振常规扫描对早期前列腺癌的诊断率及术前分期准确率尚较低 ,而磁共振快速序列动态增强扫描可使两者提高并能提供肿瘤的血供信
Set against the backdrop of a snowswept coal mining town in northern China’s Jilin Province,young director Han Jie’s(韩杰)second movie takes aim at people’s
Recent advances in analytical instrumentation have made it more feasible to measure isotope ratios of many elements. In particular, modern multicollector-induct
The Baikal biosphere reserve (Khamar-Daban Range, South Pribaikalye) demonstrates withering of fir forests, progressing from 1970’s. As to possible reasons of
All geochemical measurements require the taking of field samples, but the uncertainty that this process causes is often ignored when assessing the reliability o
In order to evaluate influence of natural radionuclide to the environment in the course of using coal,the database on the content of natural radionuclide at coa
采用现场记录、赛后交流、比赛记录表统计、调查访谈、录像观察统计研究方法 ,对女子跆拳道运动员在实战中采取的战术应用进行分析 ,得出战术在实战中的应用技巧
Through th
微型课堂主要是根据不同教学课程的特点,对课程教学进行全面设计,最终借助视频等其他教学辅助形式,对课堂内容进行呈现。具有学习时间段、学习目标较为明确等特点,是新形势下
结温/热阻是反映激光器器件散热能力的综合参数,与封装焊料层的烧结质量关系密切。本文分别通过正向电压法和波长漂移法,测试计算得到激光器的工作结温,利用扫描声学显微镜分
Soils are the largest carbon reservoir in the terrestrial system. Soils contain about three times more carbon than vegetation and twice as much as that present