| 1. | Milling , planing , turning of low - alloy steel qualities with low properties of strength , ti - alloys , etc 对强度不高的低合金钢、钛合金等进行铣削、刨平、车削等加工的牌号。 |
| 2. | The slag detection system is one of the most advanced technologies adopted in the modern continuous casting product line for steel quality 下渣检测系统是当代最先进的连铸生产线的配套环节技术,由1400高温传感器与检测仪器所组成。 |
| 3. | In addition to the exterior surface of steel quality standards should be consistent with the existing provisions of the state , there should be in line with norms 钢材表面的外观质量除应符合国家现行有关标准的规定外,尚应符合规范的规定 |
| 4. | Machining operations on this type of steel quality are the bread and butter of the average mould maker , in particular when high - performance moulds are manufactured 对这种钢材进行切削加工,尤其是制造高性能的模具,是一般制模厂的主要业务。 |
| 5. | Machining operations on this type of steel quality are the bread and butter of the average mould maker , in particular when high - performance moulds are manufactured 试译:对这种钢材进行机械加工,一般是模具制造厂家,尤其是制造高性能模具的厂家的支柱产业。 |
| 6. | Machining operations on this type of steel quality are the bread and butter of the average mould maker , in particular when high - performance moulds are manufactured 试译:对这种钢材进行切削等机械加工,是一般的模具制造厂的支柱产业,在制造高性能模具时,这种机械作业尤为重要。 |
| 7. | Produce steel is it is it make steel band and is it keep steel band two major types to roll to wa - sh to have , steel wire is it is it is it is it is it is it lead to weave according to materia l of steel wire for medium carbon steel steel wire with the steel wire of low carbon steel to bring to weave to divide to bring to weave , among them with hit carbon steel quality steel wire weave door processed into to take seal sealing strip have high strength of grasping very 主要为浙江赛阳密封件有限公司上海红阳密封件有限公司青岛美德仙居通用等公司配套。所生产钢带有冲制钢带和滚压钢带两大类型,钢丝编织带按钢丝的材质分为中碳钢钢丝编织带和低碳钢钢丝编织带,其中用中碳钢材质钢丝编织带加工成的门封密封条具有很高的夹持力。 |
| 8. | Steel frame with welding joint easily occur brittle collapse because of having a low ductility at joints then , a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads and the using steel qualities of bracing system and joints are small so adopting a semi - rigid jointed steel frame is economical and stable but for semi - rigid connections are complex and variable , in conventional analysis and design of steel structures , it is usually assumed that the connections between columns and beams are either rigid or pinned the analysis of steel frames adopting the assumption can simplify the procedure of analysis and design , but cannot precisely reflect structural practical circumstance and the errors of calculating results are large , even , get incorrect conclusions semi - rigid connection was referred to in chinese code for design of steel structures ( 2001 , 10 ) , however , it isn ’ t specified how to apply semi - rigid joints in design in fact it cannot be carry out the purpose of the paper give a calculating method that accords practical engineering and easily put into effect worthwhile it is going to promote the development of semi - rigid jointed steel frame in design and heighten structural stability in the paper , at first some commonly employed methods for the modeling of connection behavior are introduced richard abbott function modeling of connection is adopted for extended end plate bolted connection by the 34 test data comparing to regression analysis indicate richard - abbott function modeling of connection represents an excellent fit to test data then after a semi - rigid joint behavior can be modeled as a finite stiffness rotation spring , base on rotation and displacement equation derive the element stiffness matrixes with semi - rigid connections where the effects ofj ointed flexibility geometric non - linearity and shear forces in the connection deformations have been considered in and fixed - end forces are modified finally , a program for calculating semi - rigid with incremental - iterative method has been 本文的目的就是为半刚性连接钢框架的设计提供一种既符合工程实际又简便易行的计算方法,供规范使用过程的补充、延伸或参考;同时,也将促进半刚性连接钢框架设计技术的发展,为提高结构安全性能、节省工程成本发挥应有的作用。本文首先介绍了常见的几种应用较为广泛的梁柱连接弯矩转角关系模型,在分析比较的基础上,选用richard ? abbott函数模型作为外伸端板连接弯矩转角关系模型,通过对34个外伸端板连接的实验数据与回归分析得到的参数比较可知,经回归分析得到的此模型参数与实验数据符合较好。然后用弹簧表征连接点的转动刚度,根据梁的转角位移方程推导出半刚性连接的刚度矩阵,在单元刚度矩阵中考虑了节点柔性、几何非线性和剪切变形的影响,并对固端力进行了修正,最后用增量迭代法编制有限元程序进行计算和分析。 |
| 9. | Steel frame with welding joint easily occur brittle collapse because of having a low ductility at joints . then , a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads and the using steel qualities of bracing system and joints are small . so adopting a semi - rigid jointed steel frame is economical and stable 采用焊接刚性节点的钢框架因节点延性较差容易发生脆性破坏,而半刚接钢框架因节点具有较强的耗能能力可以抵抗一定的地震荷载,同时还可以减少斜撑的数量及节点用钢量,这使得半刚接钢框架成为一种经济、可靠的选择。 |