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- yttrium nodular iron 钇球墨铸铁
- How is timing controlled to prevent nodular iron fade? 如何控制球铁孕育时间?防止石墨退化?
- Basic graphite morphology types of nodular iron were introduced. 介绍球墨铸铁中石墨的基本形态类型。
- The quality control of cored-wire injection process used for production of as-cast ferrite nodular iron was described. 摘要介绍用喂线球化工艺生产优质铸态铁素体球墨铸铁的质量控制要点。
- The reason causing nodularization degeneration in surface layer of furan resin sand nodular iron castings was analyzed. 对呋喃树脂砂球墨铸铁件表层球化衰退原因进行了分析。
- The large quantity of nodular iron castings had back bridge housing are produced by using copula and handcraft molding. 通过合理熔炼、造型、制芯及铸造工艺参数,采用冲天炉熔炼,手工造型制芯,实现批量生产优质带包类桥壳球铁件。
- The foundry method design of a nodular iron reductor housing with ferrite matrix was de-scribed. 介绍了铁素体基体球铁减速器壳体的铸造工艺设计。
- The bracket of as-cast ferritic nodular iron breaks due to brittle fracture when it is assembled. 摘要铁素体球铁铸件支架在装配时发生脆性断裂失效。
- The RE(Y)-Mg-Si-Fe nodularizer had been used to cast heavy sectioned high ductile nodular iron cooling wall castings. 应用钇基重稀土镁复合球化剂，铸造厚大断面高韧性球铁冷却壁，成功地获得了铸件中心部位铸态高性能。
- A sort of chilled nodular iron camshaft was developed by adopting resin-coated sand shell mould casting process. 开发了一种采用树脂砂壳型铸造的激冷球铁凸轮轴。
- Manual molding had been used for the nodular iron front wheel boss and differential mechanism case, and chills were used to prevent shrinkage defects. 球铁前轮毂和差速器原采用手工造型,用外冷铁解决缩孔缺陷。
- In order to improve the micro-structure and the mechanical properties of the nodular iron grinding ball, some control aspects have been presented. 对凝固过程中结晶组织变异的原因进行了分析，提出了改善球铁磨球的显微组织及机械性能的控制措施。
- With respect to shrinkage problems of nodular iron, a discussion on several basic problemsof the "Proportional Solidification Technology" was held. 就球铁件缩松、缩孔问题对"均衡凝固技术"几个基本问题进行讨论。
- The fracture failure would occur in nodular iron crankshafts due to the over-shallow and non-uniform thickness of nitriding layer. 球铁曲轴常常由于渗氮层薄、质量不稳定而引起断裂失效,本课题研究了球铁曲轴加氧渗氮工艺。
- The abnormal structure usually appears at the surface layer of nodular iron castings produced by furan-sulfonic acid cured sand mold. 本实验研究查明,当用甲苯磺酸作催化剂的呋喃树脂自硬砂生产稀土镁球铁件时,通常在其铸件表层出现异常组织。
- In order to ensure high nodularity of nodular iron castings,it is necessary to reduce the sul phur content of the base iron. 为保证球铁件稳定获得高球化率,要求降低原铁液的含硫量。
- The non-equilibrium crystallizing processes and the characteristics of the metal mould nodular iron grinding ball have been discussed in this paper. 摘要用彩色金相法分析研究了金属型球铁磨球非平衡凝固过程和特性。
- The compound roll is centrifugally cast with high Cr cast iron as outer material, and nodular iron as thematerial of its core and neck. 采用电磁半连续复合铸造法制成芯轴为45钢的高钒高速钢和高铬铸铁两种复合轧辊,对复合界面的组织和性能进行了研究。
- One case indicated the influence of the casting quality of the knock-off type specimen on the quality judging veracity of nodular iron castings. 实例之一是说明敲落式球铁试块的铸造质量对判断球铁铸件质量准确度的影响;
- Adopting the craft of movable upright nodular iron is put forward to prevent welding deformation and improve work efficiency. 提出采用活动式立筋板的工艺不仅可以防止焊接变形;而且可明显提高工效.
