高温共晶点灌注方法研究

在高温共晶点研制过程中，目前常用的灌注方法包括直接共晶法和预共晶法两种，但直接共晶法存在效率低下的不足，预共晶法存在粘附问题。本文对高温共晶点灌注方法进行研究，设计了两种填充配件，一种为采用长石墨衬套的直接共晶坩埚；另一种为具有特殊结构的预共晶坩埚。经试验验证，前者可明显提高直接共晶法的灌注效率，后者有效避免了预共晶法的共晶体粘结问题，二者均达到了设计目的，为高温共晶点研制技术的完善发展起到了促进作用。

Research on the Filling Method of High Temperature Eutectic Point

In the process of high temperature eutectic point development, the common pouring methods include direct eutectic method and pre eutectic method. In this paper, two kinds of filling accessories are designed, one is direct eutectic crucible with long graphite liner, and the other is pre eutectic crucible with special structure. The experimental results show that the former can significantly improve the perfusion efficiency of direct eutectic method, and the latter can effectively avoid the eutectic bonding problem of pre eutectic method. Both of them have achieved the design purpose, and have played a promoting role in the development of high temperature eutectic point technology.