1)heavy section ductile iron厚大断面球墨铸铁
1.Directing toward the heavy section ductile iron produced by Xuan hua mechanical factory of Beijing,which has the problems of spheroidization and inoculation declined and the low percent of pass,the injection is adopted instead of the tradtional method in this article.针对北京宣化机械厂生产的厚大断面球墨铸铁件中出现的球化孕育衰退、产品质量合格率低的问题,采用喂线技术取代传统的冲入法,在孕育线中加入了抗衰退的钡及重稀土元素,起到了更好的抗衰退作用,生产出的厚大断面球墨铸铁件的抗拉强度高于400MPa,延伸率大于18%,完全符合QT400-18的力学性能指标要求。
2.The defects that easy occurred in heavy section ductile iron castings as well as the prevention measures were reviewed.概述了厚大断面球墨铸铁件易产生的几种缺陷及防止措施。
英文短句/例句
1.Casting Technology of High Strength and Thick Section Ductile Iron Mainshaft高强度厚大断面球墨铸铁主轴的铸造
2.Prevention of Common Flaw in Heavy Section Ductile Iron Castings厚大断面球墨铸铁件常见缺陷的防止
3.Application of Graphite Chills to the Heavy-Section Ductile Iron Castings石墨冷铁在大断面球墨铸铁件上的应用
4.The validity of the apparatus to the research on the solidification behavior of ductile iron with heavy section was verified.验证了这一装置对于厚大断面球铁铸件研究的有效性。
5.Experiment and Production of Heavy Thick-walled Winding Barrel Casting for Crane with Spheroidal Graphite Cast Iron大型厚壁球墨铸铁起重机卷筒铸件的试验与生产
6.The Fracture Toughness of Shaped Ferritic Ductile Iron by Horizontal Continuous Cast水平连铸铁索体球墨铸铁型材的断裂韧性
7.Study of the fracture toughness of ductile cast iron (DCI) and malleable cast iron (MCI)球墨铸铁和可锻铸铁的断裂韧性的研究
8.Microstructure and Mechanical Properties in Heavy Section Ductile Iron厚大断面球铁的显微组织及力学性能
9.Study on the Nodularity and Thickness of Centrifugal Nodular Cast Iron Pipe Using Ultrasonic Testing Method;离心球墨铸铁管球化率和壁厚的超声检测研究
10.Ductile iron pipes--External zinc-spray coatingGB/T17456-1998球墨铸铁管外表面喷锌涂层
11.Laser Alloying of Ductile Iron Surface Coated with Sub-Micron Ceramics球墨铸铁表面激光亚微米陶瓷合金化
12.Pig iron used for spherical graphite cast ironGB/T1412-1985球墨铸铁用生铁
13.The Fracture Analysis of Ductile Iron Fracture Test under Complex Stress Condition复杂应力状态下球墨铸铁断裂试验的断口分析
14.Research on Cast Iron Fracture Mechanism under the Complex Stress by Test;复杂应力下球墨铸铁断裂机理的试验研究
15.Study on Relation between Fracture toughness and Temperature for Nodular cast iron;球墨铸铁断裂韧性随温度变化规律的研究
16.Ductile iron pipe fittingsGB/T13294-1991球墨铸铁管件
17.Study on the Manufacturing Procedure of Cast Ferritic Ductile Iron;铸态铁素体球墨铸铁的生产工艺研究
18.The Investigation on Spot Array Laser Alloying on Nodular Cast Iron Hot Roller;球墨铸铁热轧辊表面激光点状合金化技术研究
相关短句/例句
Heavy Compound Ductile Iron大断面复合球墨铸铁
3)heavy nodular iron castings厚大球墨铸铁件
4)as-cast heavy section ductile iron with high toughness铸态厚断面高韧性球墨铸铁
5)heavy-section ductile iron厚大断面球铁
1.Computer is used for the numerical simulation of temperature field of the solidification process of heavy-section ductile iron casting.应用计算机对厚大断面球铁铸件的凝固过程进行了温度场的数值模拟。
6)heave sectioned ductile iron厚大断面大型球铁
延伸阅读
球墨铸铁 析出的石墨呈球形的铸铁。球状石墨对金属基体的割裂作用比片状石墨小，使铸铁的强度达到基体组织强度的70～90％，抗拉强度可达120kgf/mm2，并且具有良好的韧性。球墨铸铁除铁外的化学成分通常为：含碳量3.6～3.8％，含硅量2.0～3.0％，含锰、磷、硫总量不超过1.5％和适量的稀土、镁等球化剂。 球墨铸铁生产工艺简单，铸造性能比铸钢好（但比灰口铸铁差），成本低，因此，被广泛用来制作受力复杂，对强度和韧性以及耐磨性要求较高的零件，如曲轴、齿轮、高压缸、汽车底盘零件等。20世纪70年代全世界的球墨铸铁管的年产量达数百万吨。中国古代铸铁中亦有球状石墨的组织（见冶金史）。
