纯铝在耐热铝合金高温变形过程中的润滑作用

来源期刊：中南大学学报(自然科学版)2006年第3期

论文作者：谭敦强 黎文献 肖于德 王日初 张迎元

文章页码：450 - 454

关键词：高温变形;润滑;摩擦因数;耐热铝合金

Key words：high temperature deformation; lubrication; friction coefficient; heat-resistant aluminum alloy

摘    要：采用圆环压缩法检测Al-Fe-V-Si系合金在喷射沉积高温时变形的摩擦因数,研究未加润滑剂、加石墨+机油润滑、加纯铝润滑、加纯铝+石墨+机油润滑4种条件下的摩擦因数随变形温度变化的情况,并探讨其润滑机理。研究结果表明,纯铝润滑以及纯铝+石墨+机油润滑均能有效地改善摩擦状况,其摩擦因数只有未加润滑剂时的1/3~1/4。采用纯铝润滑制备出外径×内径×长度为417 mm×340 mm×300 mm的正挤压管材,采用纯铝+石墨+机油润滑反挤制备出外径×内径×长度为520 mm×460 mm×1 000 mm的管材。

Abstract: Friction coefficients and lubricative mechanics of Al-Fe-V-Si heat resistant aluminum under four conditions were researched by method of annulus compression, without lubricant, but in the presence of pure aluminum, graphite+oil, pure aluminum+graphite+oil. Results show that the condition of friction interface is improved when Al-Fe-V-Si alloy is lubricated by pure aluminum or by pure aluminum+graphite+oil, and the friction coefficients are 1/3～ 1/4 of those without lubriction. The extrusion pipes of with dimension of 417 mm×340 mm×300 mm and 520mm×460 mm×1 000 mm in outer diameter by inner diameter by length are successfully prepared lubriction of pure aluminum and pure aluminum+graphite+oil respectively.