The production process for making poly silicon mainly includes directional solidification and casting methods.
多晶硅锭的制备工艺主要包括定向凝固法及浇铸法。
The relationship between the laser processing parameters and laser directional solidification morphology was analyzed by the model.
根据计算分析了激光工艺参数与激光定向凝固组织的关系。
Some rules of computer numerical simulation for the directional solidification with steep temperature gradient have been found out.
本文探讨大温度梯度下铸件定向凝固过程数值模拟的一些规律性。
It is very important to investigate and optimize the directional solidification process to obtain a high purity and integrated ingot.
为了获得高纯度的完整硅锭，探究和优化定向凝固过程非常重要。
The temperature gradient in front of S/L interface was measured on Zone Melting Liquid Metal Cooling(ZMLMC) directional solidification apparatus.
对定向凝固区域熔化液态金属冷却法的固液界面前沿温度梯度进行了测定。
The influences of hysteresis and relaxation of melt superheat on the morphological stability of interface in directional solidification were described.
熔体过热处理的弛豫过程和引起的不可逆过程使熔体状态变化出现滞后效应，从而影响定向凝固界面形态稳定性。
Have multiple non-vacuum and vacuum-melting equipment, mainly to the vacuum melting, directional solidification technology and the overall fine-grained technology.
拥有多台非真空和真空熔炼设备，以真空熔炼为主，有定向凝固技术和整体细晶技术。
With directional solidification liquid quenching and definite quantity analysis of metallographic, this paper studied the micro solidification characteristic of ZA28.4 alloy.
通过定向凝固液淬试验和金相定量分析，研究了二元ZA2 8.4合金的微观凝固特性。
The invention discloses a technology for the directional solidification growth of polycrystalline silicon ingot, belonging to the preparation of semiconductor material silicon crystal.
一种定向凝固生长多晶硅锭工艺，本发明属于半导体材料硅晶体的制备。
The equipment adopts the technology of directional solidification, producing polycrystalline silicon ingots through melting and directional crystal growth in a period of approximate 60 hours.
该设备应用定向固化技术，经融化、定向晶体生长，通过60小时左右铸成多晶硅铸锭。
Directional solidification process is an important part that of the physical metallurgy of solar energy polysilicon.
定向凝固工艺是物理冶金法制备太阳能级多晶硅的一个重要环节。
Directional solidification technology is a technical course that use certain equipment to make directional structure material with excellent performance at determinate conditions.
定向凝固技术是指利用一定的设备，在一定的工艺条件下使材料的组织具有特殊取向从而获得优异性能的工艺过程。
Directional solidification could improve hot rolling formability of magnesium ingot effectively. The total deformation could reach 94% without cracking when hot rolling was held at 673k.
定向凝固工艺可有效提高镁合金铸锭的热轧成形能力，在轧制温度为673k的条件下进行热轧，总变形量可达94%以上而不出现裂纹。
Directional solidification could improve hot rolling formability of magnesium ingot effectively. The total deformation could reach 94% without cracking when hot rolling was held at 673k.
定向凝固工艺可有效提高镁合金铸锭的热轧成形能力，在轧制温度为673k的条件下进行热轧，总变形量可达94%以上而不出现裂纹。
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