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

1、

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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2、

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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3、

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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4、

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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5、

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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6、

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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7、

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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8、

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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9、

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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10、

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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11、

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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12、

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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13、

A hollow cylindrical electrode was employed to detect the electrical signal of laser-induced plasma during YAG-pulse laser welding of Al and 45~# steel.

针对YAG脉冲激光焊接Al及45~钢时产生的光致等离子体，采用空心圆电极探测等离子体电信号；

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14、

CO 2 gas was used as the shielding gas to eliminate porosities in deep penetration laser welding of low carbon steel in this paper.

采用CO2作为保护气体消除大熔深激光焊接低碳钢时易发生的气孔问题，并对比研究了CO2和Ar气保护条件下12mm厚低碳钢板激光焊缝的组织和韧性。

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15、

Linage Processing on High-speed Photography of CO_2 Laser Welding Plasma

CO2激光焊接等离子体高速摄影照片图像处理

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16、

Influence of laser welding on crystallization behaviour of Zr_ ( 45) Cu_ ( 48) Al_7 bulk metallic glass

激光焊接对块体非晶合金Zr（45）Cu（48）Al7晶化行为的影响

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17、

Element mixing distribution and structure feature of fusion zone in laser welding between different alloys and pure titanium

异种合金与纯钛激光焊接熔焊区元素混熔分布及组织结构特征关于｛x／n｝的分布

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18、

The Mechanical Properties of Titanium Joined with Laser Welding by Pulsed Nd ∶ YAG Laser Apparatus

Nd∶YAG激光焊接钛的机械性能

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19、

Plasma control in high-power CO_2 laser welding

高功率CO2激光焊接等离子体的控制

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20、

Low Power Nd ∶ YAG Laser Welding of 18-8 Type Austenitic Stainless Steel

18-8型奥氏体不锈钢低功率Nd∶YAG激光焊接研究

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