| 1. | Mains frequency coreless , induction furnace for melting copper
工频无心感应熔铜炉 |
| 2. | Applying advanced equipment , casting the product with melted copper
采用先进的设备,将铜溶解之后, |
| 3. | W - cu composites are usually fabricated by infiltration - sintering porous tungsten compacts with molten copper or by liquid - phase sintering w - cu powder compacts
W - cu复合材料通常采用粉末冶金熔渗烧结或液相烧结法制取。 |
| 4. | 3 samples are drawn from various vertical postions from molten copper and are tested by spectrometer to ensure the chemcial composition is withen the tolerance and homogeneous
每炉分上中下进行光谱分析保证化学成份在控制范围和合金成份均匀分布。 |
| 5. | Analyzing the reaction of cuio and al in thermodynamics and kinetics showed that al2o3 particles could be gotten by the reaction between cu2o and al in molten copper . 2
通过热力学和动力学分析可知，在铜液中cu _ 2o与al完全能够反应生成稳定的al _ 2o _ 3增强颗粒。 |
| 6. | The chemical reaction control of cuo - al system has been studied . the results show that the chemical reaction is more stable when cupric oxide and aluminium is put respectively into molten copper
在此基础上，实验研究了cuo ? al体系的化学反应控制，得出了采用cuo和al分别加入法比压块加入法会使反应进行的更加平稳。 |
| 7. | Moreover the effects of the temperature of molten copper and the content of al powder in the mixed - powder on microstructure and properties ( hardness , conductivity ) of the material were studied . the results indicated that : 1
本文采用反应铸造法制备了cu - al _ 2o _ 3复合材料，并分析讨论了熔液温度和混合粉末中al含量对制备cu - al _ 2o _ 3复合材料的性能(硬度、电导率)和组织的影响。 |
| 8. | Abstract : hydrogen and oxygen solubility in molten copper , condition of gas - absorption during smelting of pure coper , mechanism of gas hole formation , gas hole appearance on worked material and measure to gas absorption prevention have been briefly described
文摘:论述了氢和氧在铜液中的溶解能力、熔铸紫铜时的吸气条件、气孔形成的机理、气孔在加工型材上的表现、防止吸气的措施等。 |
| 9. | When the molten copper temperature at 1200 and the content of al in mixed - powder more than 16 . 5 % , the microstructure and properties of the cu - al2o3 composites were more satisfying . being affected more by microscopic motion state of cu2o and al in the molten copper , the reaction between cu2o and al reacted non - uniformly while the content of al in mixed - powder is less than 16 . 5 %
熔液温度为1200且混合粉末中al含量大于16 . 5时，材料组织性能较好； al含量小于16 . 5时， cu _ 2o与al在铜熔液中的反应受物质的微观运动状态影响较大，反应进行得不均匀。 |
