The fracture profile of ductile iron has been extracted by means of an S 600 digital image processing system and its fractal characteristics are studied with a classical Mandelbrot fractal model and an Underwood modified fractal model.

1、

Microstructure and Properties of Cr-Alloyed As-Cast Nodular Iron& Application of Cr in As-Cast Nodular Iron(ⅰ)

Cr合金铸态球墨铸铁的组织和性能&Cr在铸态球墨铸铁中的应用（1）

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2、

The three body corrosion wear behaviors of martensitic ductile iron and low chromium white cast iron under the test conditions of different pH value slurries have been studied.

对马氏体球墨铸铁在不同pH值石英砂浆中的静载三体腐蚀磨损特性进行了试验研究，并与低铬白口铸铁进行了对比。

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3、

The results show that passivation layer, permeated layer and buffer layer which contain carbide and nitride were formed on nodular cast surface after gas multicomponent permeation. The surface hardness reaches to 807 HV and depth of permeated layer is 40 um.

结果表明，经多元共渗处理后，在球墨铸铁表面形成含有碳化物和氮化物的钝化层、共渗层和过渡层，其表面硬度可达807HV，渗层厚度40um。

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4、

The simulation of ductile iron hub during solidification was conducted by means of Huazhu CAE software.

采用华铸CAE软件对球墨铸铁轮毂的凝固过程进行了模拟。

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5、

Influence of Ni on the Heat Treatment of Ductile Cast Iron

Ni对球墨铸铁热处理的影响

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6、

An automatic evaluating system of graphite sphere grade of nodular cast iron has been established. The hardware of the system consists of microscope, CCD, imaging acquisition card and personal computer and digital images of metallographic structure of the samples can be collected satisfactorily.

采用普通金相显微镜、CCD、图像卡和计算机构成了球墨铸铁球化级别评定的硬件系统，可以实现被测试样金相组织的数字化图像获取，其图像质量能够满足数据处理要求。

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7、

Production of Piston Ring of Nodular Cast Iron Using Steel-making Iron

采用炼钢生铁生产球墨铸铁活塞环

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8、

Optimization on composition and properties of BAINITE-NODULAR iron composite rollers

Ni-Mo贝氏体球墨铸铁复合轧辊成分与性能的优化

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9、

Development of DN1600 × 90 ° T-Type Double Socket Ductile Iron Elbow Pipe

DN1600×90°T型双承口球墨铸铁弯管研制

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10、

The nitride layer was formed on the surface of ductile cast iron by gas multi-element penetration, and the phase structure and section appearance of nitride layer were analyzed by the XRD and SEM.

球墨铸铁经过气体多元共渗后可在其表面形成氮化层，通过X射线衍射和扫描电镜对渗层的相结构与形貌进行分析。

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11、

Development of Foundry Method CAD Software for Nodular Iron Castings

球墨铸铁铸造工艺CAD软件开发

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12、

Application of 3D Studio Technique in Nodular Cast Iron Testing Instrument

3D动画技术在球墨铸铁检测仪上的应用

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13、

Spheroidizing Treatment Investigation of B-Al Spheroidal Graphite Cast Iron

B-Al球墨铸铁球化工艺研究

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14、

And when W of two thermal analysis curves is small enough, the graphite morphologies of the samples that solidify in 6 hours are similar.

当W足够小时，两条热分析曲线的差别也足够小，其对应的两种球墨铸铁铁液6h凝固组织中石墨形态的差别也足够小；

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15、

According to the maximum pressure to bear, pump body and cover can be made of grey cast iron ( 1.6Mpa), spheroidal graphite cast iron ( 2.0Mpa) or cast steel ( 2.5Mpa, including stainless steel).

根据泵承受的最大压力，泵体和泵盖材质采用灰口铸铁（1.6Mpa）、球墨铸铁（2.0Mpa）、铸钢（2.5Mpa，包括不锈钢）。

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16、

Estimation of threshold value Δ Kth in fatigue crack growth of different REMg ductile irons under lower stress revealed that the existence of Δ Kth in the irons is affirmed.

测定了各类球墨铸铁在低应力下疲劳裂纹扩展界限应力强度因子△K（th）值，肯定了球铁是存在ΔK（th）值的。

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17、

Direct photometric determination of ce-group rare earth elements with the new reagent asa-tb

新显色剂AsA-TB直接光度法测定球墨铸铁中铈组稀土

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18、

The behavior and function of Ni in ductile iron

Ni在球墨铸铁中的行为及作用

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19、

The process to produce composition QT450-10 cast using a great deal waste steel was defined.

确定了利用大量废钢生产合成铸态Q T450-10球墨铸铁的工艺。

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20、

The fatigue life of GS 52 nodular graphite cast iron was studied with the ultrasonic fatigue technique at 20 kHz.

用超声疲劳试验技术研究了球墨铸铁GS52在20kHz时的疲劳寿命。

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