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.

1、

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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2、

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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3、

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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4、

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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5、

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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6、

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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7、

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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8、

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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9、

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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10、

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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11、

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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12、

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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13、

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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14、

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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15、

This paper describes the trial production process of 410 mm centrifugally double poured nodular cast iron rolls used in high speed wire rolling mills.

介绍了高速线材轧机φ410mm离心铸造复合球墨铸铁轧辊的试制过程。

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16、

Nd: YAG Laser Welding of 12 mm Low-Carbon Steel Plate with CO_2 Shielding Gas

CO2气体保护的激光焊接12mm厚低碳钢板

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17、

Experimental research of the plasma shielding mechanism in the process of CO_2 laser welding

CO2激光焊接光致等离子体屏蔽机制的实验研究

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18、

Firstly, characteristics of conventional working process and autonomous working process of the worker in a 3D laser welding production cell were analyzed, and two task-network models were built based on timed stochastic colored Petri nets.

以3维激光焊接生产单元为研究实例，首先，对比了人在传统生产单元和自治生产单元中的两种工作流程特点，基于有色时间Petri网分别建立了两种工作流程的任务网络模型。

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19、

Results show that CO2 laser welding has advantages of high welding speed, distortion free and excellent weld profile with the mechanical property and deep drawing ( cupping) similar to that of the base metal.

结果表明，使用CO2激光焊接工艺焊速高，可以获得无变形，成形性良好的焊接接头，其力学性能和深冲加工（杯突试验）均与母材相当。

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20、

Investigation on Current Enhanced CO_2 Laser Welding of Aluminum

电流强化铝合金CO2激光焊接

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