锻压技术

新型金属热挤压用玻璃润滑剂的研制

英文标题：Development of new type glass lubricant for hot extrusion of metals

作者：邹丰冯驰刘琪段素杰

分类号：TG31

出版年,卷(期):页码：2025,50(3):144-149

摘要：

为了提升热挤压镍基高温合金无缝管材的加工质量与效率、防止高温氧化与合金元素贫化、保护模具并延长寿命，调整了玻璃组分中SiO2和Al2O3的含量，研制出了一种满足镍基高温合金热挤压工艺(1000~1150 ℃)要求的新型玻璃润滑剂。该玻璃润滑剂的软化点为740 ℃，半球点为822 ℃，流动点为897 ℃，其在热挤压温度范围内的高温粘度为1.8~2.4 Pa·s，高温物性与高温粘度均与热挤压工艺要求相匹配。通过圆环镦粗实验得到喷涂玻璃润滑剂的样品的平均摩擦因数为0071，而无涂层样品的摩擦因数为0.460，摩擦因数降低了84.6%，有效地降低了热挤压工艺中的阻力。结果表明,该玻璃润滑剂具有较好的润滑效果。

To enhance the processing quality and efficiency of hot extrusion for nickel-based superalloy seamless tube, prevent the high temperature oxidation and alloy element depletion, and protect the die while extending its lifespan, a new type glass lubricant tailored for the hot extrusion process (1000-1150 ℃) of nickel-based superalloy was developed by adjusting the SiO2 and Al2O3 contents in the glass composition. The softening point of the glass lubricant was 740 ℃, the hemispherical point was 822 ℃, the flow point was 897 ℃, and the high temperature viscosity was 1.8-2.4 Pa·s in the hot extrusion temperature range. The high temperature physical properties and high temperature viscosity were well matched with the requirements of the hot extrusion process. Through the ring upsetting experiment, the average friction coefficient of the sample sprayed with the glass lubricant was 0071, while the friction coefficient of the uncoated sample was 0.460, and the friction coefficient was reduced by 84.6%, which effectively reduced the resistance in the hot extrusion process. The results show that the glass lubricant has a good lubrication effect.

基金项目：

作者简介：邹丰（1984-），男，学士，工程师 E-mail：zoufeng@tlcglass.com.cn

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