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一、前言现代航空,特别是航空发动机,大量采用高温合金、钛合金、耐热不锈钢和高强度结构钢等难变形合金。这些材料在锻压成形中,由于合金化程度越来越高,导致抗力大、成型难、裂纹、祖晶、晶粒不均以及表层金属污染或元素贫化等技术问题越来越多,有的用老工艺简直无法生产,GH698盘的锻造裂纹,曾一度成为航空部和冶金部的部领导部非常关心的技术关键。然而,当采用FR系列等防护润滑剂之
I. INTRODUCTION Modern aviation, especially aeroengine, adopts a large amount of hard alloy such as high temperature alloy, titanium alloy, heat-resistant stainless steel and high-strength structural steel. These materials in the forging forming, due to the increasing degree of alloying, resulting in large resistance, forming difficult, cracks, ancestral, uneven grain and metal surface contamination or element depletion and other technical problems more and more, and some With the old craft simply can not produce, GH698 plate forging cracks, once the Ministry of Aviation and Metallurgical Department of the Ministry of the Ministry of the leadership is very concerned about the technical key. However, when using FR series of protective lubricants