查询词典 alloy steel

High power CO2 laser powder welding of aluminum alloy .

侧向送粉激光熔覆粉末温升模型及实验研究。

The following iron-base sprayed welding alloy powder should be dried by the customer under 120℃ for two hours before useing.

下面介绍我公司铁基焊粉，建议用户在使用前应在120℃保温两小时低温烘烤后使用。

The influences of the filler metal powder on the intensity threshold, weld formation and process stability have been studied during high power CO2 laser welding of aluminum alloy through the comparison between welding with and without metal powder.

通过采用和不采用填充合金粉末的比较试验，研究了填充合金粉末对铝合金高功率CO2激光焊接功率阈值、焊缝成形和焊接过程稳定性的影响。

Theoretically the pump blade failure mechanism was worn on, the impact of wear failure leaves the various factors was analyzed, combined with practice pumping station operation and maintenance experience, the focus at a reasonable selection, surface heat treatment, non-metallic protective coating alloy powder spray repair welding and welding six aspects, premature wear of the pump blade technical measures and repair methods was prevented in order to enhance its effective life.

理论上阐述了水泵叶片磨损失效的机制，具体分析了影响叶片磨损失效的各种因素，并结合泵站运行实践和维修经验，重点在合理选材、表面热处理、非金属涂层防护、合金粉末喷焊和补焊等6个方面，提出了防止水泵叶片过早磨损的技术措施和修补方法，以提高其有效的使用寿命。

Alloy powder welding technology progress Spray protection technology, with the successful development of low melting point powder spraying and welding in the developed based on a metal surface protection technology.

由于喷层经历重熔过程，计量泵涂层致密无孔，表面光滑平整，具有节约材料、质量好、效率高的优点，喷焊层表面硬度可高达HRC60-70，可以几倍甚至十几倍的延长水泵过流部件的使用寿命。

In the last part of this study, the solidification peculiarities and nucleation mechanisms of Al-Li alloy weld metal were investigated.

在本文的最后一部分，研究了铝锂合金焊缝金属凝固组织特征和形核机制。

The reason that caused the common air leakage defect of the aluminum alloy wheel hub with web spokes in production was analyzed using CAE technology, and the improvement scheme of the mold for wheel hub gravity casting was proposed.

针对筋条呈网状的铝合金轮毂生产中常见的漏气缺陷，运用CAE技术分析了这种漏气缺陷产生的原因，提出了轮毂重力铸造模具的改进方案，并用CAE仿真验证了该方案的正确性，实际生产统计数据表明采用该方案有效地降低了网状铝合金轮毂产品的漏气率。

Cylinder are made of choiced boron alloy cast iron with excellent wear resistance and good metallograhic structure.

缸孔内网纹清晰，具有良好的贮油性能，延长发动机的使用寿命。

In recent years, due to the casting level, more and more like, bottom-mode, frame type, such as using higher strength and wear resistance of ductile iron or high-strength alloy cast iron production, and heat fatigue The better performance of graphite cast iron have been used for the production of hot-box material.

近几年来，由于铸造水平的提高，已有越来越多的模样、模底板、型板框等采用强度和耐磨性更高的球铁或高强度合金灰铸铁制作，而耐热疲劳性能更好的蠕墨铸铁也被用于制作热芯盒材料。

Gift table; hand-decorated table; opal bracelet; Epoxy shell bracelet; wholesale quartz watch; bracelet table; alloy watchcase

本商行是一家具有多年从业经验，自设啤胚机和表壳五金厂，致力于手表的开发，生产与销售的厂家。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48