铸

The variation of oxidation resistant property of Cr-Zr-Cu alloy for continuous crystallizer of metal casting was investigated.

研究了连铸结晶器用Cr-Zr-Cu合金高温抗氧化性能的变化规律，通过氧化动力学曲线的测定，确定了该合金抗氧化级别的温度区间。

The performance requirement and status of material for crystallizer of continuous cast steel machine were surveyed.

分析了连续铸钢机结晶器材质的性能要求和现状，并探讨了其发展趋势，指出将CuW/CrCu复合材料作为结晶器材质是较理想和可行的。

Since there were many factors which influenced the results of the continuous casting of electromagnetic crystallizer, using the method of the real object test could cost a lot of experimental expense and lengthen the experimental period.

但有很多因素影响铝钪中间合金的电磁结晶器连铸操作，若采用实物试验的方法，会造成大量试验经费的浪费和实验周期的延长。

So the study of the technology of the using the continuous casting of electromagnetic crystallizer preparing the Al-Sc master alloy seems very important.

通过调研发现，采用电磁结晶器连铸有解决铝钪中间合金的偏析和钪的实收率过低等问题的可能。

It has right of self-import and export ,strong technical power,advanced production equipment,complete testing equipment.It annually produces nonferrous metal 6000 ton including cast steel,cast iron,stainless steel and cupper,aluminium ect.

公司拥有自营进出口权，技术力量雄厚，生产设备先进，检测设备齐全，年产各类铸钢、铸铁、不锈钢及铜、铝等有色金属铸件6000多吨。

The study of heated-mould continuous casting of BFe30-l-l cupronickel tube can develop a manufacturing mode including near net ...

研究热型连铸BFe30-1-1白铜管坯，发展铸造管坯—冷拔成型—成品的工艺模式，为材料加工研究开辟了一条新思路。

The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

结果表明：在连铸过程中施加旋转电磁场能够提高金属液的流动性和充型能力，消除表面裂纹缺陷，从而制备出表面光滑的薄壁白铜管坯；在电磁力的作用下管坯凝固组织显著细化，富镍相由针状转化为团块状，同时铸造应力由未施加电磁场时的7.2 MPa下降至0.32 MPa；随着凝固组织的改善，施加磁场的管坯抗拉强度和伸长率与未施加磁场管坯的相比分别提高5%和36%。

In the simulation, the flow rule of melt metal in mold of horizontal continuous casting with electromagnetic stirring is measured using ultrasonic Doppler velometer, and the result is inter confirmed with the solidification characteristics is tics of zinc cupronickel thin slab in industrial product, some advantageous results are obtained that, when the current is 400 A the inner micro-pores disappear, when the current is 500 A the center equiaxed crystal layers occur and when the current is to 800 A the inner-segregation decreases to zero.

在模拟实验中，用超声波多普勒测速仪测量该电磁搅拌下水平连铸结晶器内金属液的流动规律，并与生产实验中锌白铜板带的凝固特征相互印证，发现搅拌电流达到400 A时，板带内部气孔消失，电流达到500 A时板带出现等轴晶带，电流达到800 A时板带坯偏析率趋于零。

Hammett gave murder back to the kind of people that commit it for reasons, not just to provide a corpse; and with the means at hand, not with hand-wrought duelling pistols, curare, and tropical fish.

哈梅特把谋杀案还给了有杀人理由的人，不仅仅是提供一具尸体而已；还给了手头有凶器的人，这种凶器不是手工打铸的决斗手枪，毒箭，热带鱼。

This article introduces the selection of drawing line datum ,the way of improving drawing quality and efficiency and how to make up some shortcomings of casting and forging by the method of borrowing material.

介绍了划线基准的选择及提高划线质量和效率的途径，叙述了如何利用借料方法来弥补铸、锻件毛坯的某些缺

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。