(1. 中国科学院 金属研究所，沈阳 110016；
2. 宝钛集团有限公司，宝鸡 721014；
3. 北京天力创玻璃科技开发有限公司，北京 100000)
摘 要: 采用平模挤压工艺并利用玻璃润滑制备钛合金型材。挤压制品的组织均匀、表面状态以及尺寸精度均受模具设计、润滑情况以及挤压工艺参数等诸多因素的影响，玻璃润滑是其关键工艺之一。通过有限元模拟结合试验对钛合金型材挤压过程的玻璃润滑工艺的诸多参数进行分析，研究其对体系温度分布和变形的影响。针对不同流动特性和结构设计的玻璃防护涂层、滚涂玻璃粉和玻璃垫对钛合金型材挤压制品润滑状态进行模拟，预测不同工况下的玻璃润滑膜的温度分布和黏度变化规律，并根据玻璃软化规律预测玻璃润滑膜的厚度，并提出玻璃润滑工艺的改进方案。
关键字: 钛合金；型材挤压；玻璃润滑；有限元模拟
（1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
2. Baoji Titanium Industry Co., Ltd., Baoji 721014, China;
3. Beijing Tianlichuang Glass Technology Development Co. Ltd, Beijing 100000, China）
Abstract:Glass lubrication in metal extrusion was studied by combining finite element analysis and experiments to investigate the temperature and viscosity distribution in oxidation-resistant glass lubricant, rolled glass powder layer and glass pad for high temperature metal extrusion. These simulations provide some fundamental information to the selection and design of glass lubricants and extrusion process. The preliminary conclusions are shown as follows. It is necessary to use Ugine-Sejournet process for the extrusion of titanium alloys. The glass lubrication is categorized into two aspects: container lubrication and die lubrication. The container lubrication is controlled by the sprayed coating and the glass powder coating. The die lubrication is mainly controlled by glass pad. FEM simulation is helpful to select the glass and control temperature distribution of oxidation resistant coating, glass powder coating and glass pad, which give good suggestion to the design and control of glass lubrication.
Key words: titanium alloy; section extrusion; glass lubrication; finite element simulation
