埋弧焊机的单片机控制系统设计

设计了以MCS-51单片机为控制核心的埋弧焊机控制系统．实现焊接过程的实时控制，保证了焊接电流和电弧电压的自动调节。通过实际生产应用表明：该控制系统工作稳定可靠，焊接质量较好，能够满足生产要求。     

Thixoforging of continuous fiber-reinforced AlSi/AlMg-alloys

High strength in combination with low density is the key features for lightweight constructions in automotive and aerospace applications. Tailor-made fiber reinforcements in light-metal matrices could help to achieve this goal. However, the integration of fibers with conventional casting-route manufacturing techniques like squeeze casting or diffusion bonding restricts the component geometry and results in elevated process cost due to long cycle times and the need of additional fiber coatings. In the center of competence for casting and thixoforging Stuttgart (CCT), new processes for manufacturing metal matrix composites are developed. Long-fiber reinforced Al–Si alloys and components are produced by thixoforging of laminates made of alternating metal matrix layers and carbon fiber fabrics. This paper illustrates the manufacturing technology and first experimental results with special focus on fiber penetration and infiltration behavior and also on the formation of fiber-matrix interface to analyze fiber damage by mechanical or chemical attack.     

Ni－Cr－B－Si合金粉末等离子喷涂层的高温性能及其在滚锻模上的应用

研究了Ｎｉ－Ｃｒ－Ｂ－Ｓｉ合金粉末等离子喷涂层的高温抗氧化性能、耐磨性、热稳定性，并介绍了其在连杆毛坯滚锻模上的应用．结果表明，这种涂层的某些高温性能大大优于５ＣｒＮｉＭｏ钢，在冲击载荷不大的场合，可以作为热锻模的强化方法．     

High temperature corrosion behavior of arc-sprayed aluminum coatings on steel

Aluminum coatings were sprayed on the substrate of steel Q235 by arc spraying. The test samples of Q235, Al coatings and Al coatings with seal coat were placed in box type electric resistance furnace at 400, 500,600, 650 ℃ when their oxidation behaviors were studied. And their oxidation kinetics curves were protracted. Microstructure, microhardness, bond strength and distribution of section elements were investigated by optical microscope(OM), Vickers microhardness instrument, electric tensile test machine and EPMA. Al coatings and Al coatings with seal coat can enhance the oxidation-resistance of substrate under 500 ℃. The latter has the best corrosion resistance. The coatings can't protect the substrate against oxidation above 600 ℃. After a long time corrosion there is enriched oxygen element at interface.     

气体保护焊在变压器波纹油箱制造中的应用

简述了变压器波纹油箱的结构和焊接方法，通过纯CO2和混合气体2种焊接工艺方法的实践，肯定了混合气体保护焊应用于变压器波纹油箱焊接工艺是切实可行的，具有推广使用价值。     

Na2SiO3—KOH—（NaPO3）6溶液中Ti6Al4V微弧氧化陶瓷膜研究

用非平衡交流微弧氧化法于Na2SiO3-KOH-(NaPO3)6溶液中在Ti6Al4V表面形成氧化物陶瓷膜。分别用扫描电镜、电子探针及X射线衍射研究了陶瓷膜的组织形貌、元素分布和相组成。相对致密均匀的膜层主要由TiO2(钙钛矿相及金红石相)及非晶相组成。厚约20μm的膜可分为3层：过渡层、致密层与疏松层。电解液所含元素Si，P进入到膜层中，表明电解液组元急烈参与微弧氧化反应，这为通过选择电解液来设计膜层的相组成进而对膜层进一步改性提供途径。     

晶闸管弧焊整流器的全集成化控制

在保留双反星形可控整流主电路优点的同时，根据手工焊和氩弧焊的工艺特点，对控制电路作了全集成化设计。介绍了稳弧电路、同步移相电路、触发电路及外特性控制电路的设计特点，对各单元电路进行了具体的分析。     

晶闸管逆变式弧焊电源的主回路分析和设计

本文分析了晶闸管逆变式下降特性弧焊电源主回路的工作原理，指出了现有文献分析的不足之处，提出了逆变变压器的设计方法和换向电容、输出滤波电感电容的参数计算公式，并给出了设计实例。     

并联式波形控制对熔滴过渡的影响

为改善弧焊过程的动特性,减少飞溅,对一种并联式IGBT波形控制器的波控特性进行了实验研究,研究了该波形控制器对焊接过程焊机动特性的影响,并分析了波控参数对焊接熔滴过渡过程的影响.结果表明:并联式波控是一种低成本的、降低飞溅的有效方法,可以优化焊接电流的波形,抑制短路末期的峰值电流,确保短路末期液桥的柔顺破断,削弱燃弧初期电弧对熔池的冲击.