联合收割机切割器主要由双联护刃器、动刀片、定刀片、刀杆等构成。双联护刃器是切割器的关键零件之一,其形式也随联合收割机的发展经过不断改进、换型,使其更先进、更合理。本文就我国双联护刃器的使用情况及整体锻造双联护刃器的推广应用作一简要介绍。 80年代初,我国只能生产一些小型联合收割机,其双联护刃器采用可锻铸铁(即通常所说的玛钢)铸造。此 Combine harvester cutter mainly by the double guard blade, moving blade, fixed blades, arbor and other components. Double guard blade is one of the key parts of the cutter, its form with the development of the combine harvester through continuous improvement, change, make it more advanced and more reasonable. In this paper, the use of double guard blade in our country and the promotion of dual forged guard blade overall for a brief introduction. In the early 1980s, only a few small combine harvesters could be produced in our country. The twin guard blades were made of malleable cast iron (commonly known as Masteel). this