论文部分内容阅读
履带式工程机械受其工况的影响,驱动轮轮齿磨损较快。对于上述情况,购置新的驱动轮不仅费用高而且供货周期长,甚至影响任务的按期完成;如若采用镶齿法、镶齿圈法或堆焊法,效果又都不太理想。现将在修复驱动轮中尝试的一种新方法介绍给大家。 我们选用合适的材料,冷锻成一定形状,然后将其焊接到驱动轮上。具体作法如下: 一、选材 履带式工程机械驱动轮材料一般为45、35SiMn、40Cr等材料,机加工和热处理后其齿部硬度一般达到HRC40～50。我们选用废料堆中许多汽车换下的旧钢板弹簧,其材料为55Si2Mn、60Si2Mn、63Si2MnA或50CrMnA热轧弹簧扁钢。热处理后,其硬度为HRC61～68,金相组织为均匀的回火托氏体和索氏体,硬度、韧性
Crawler construction machinery affected by the conditions, driving wheel gear wear faster. For the above situation, the purchase of a new drive wheel is not only costly and the delivery cycle is long, and even affect the completion of the mission on schedule; if the use of inserts, ring gear method or surfacing method, the effect is not ideal. Now a new method to try to fix the drive wheel is introduced to everyone. We choose the right material, cold forged into a shape, and then welded to the drive wheel. The specific practices are as follows: First, the material tracked construction machinery drive wheel materials are generally 45,35SiMn, 40Cr and other materials, machining and heat treatment of the tooth hardness generally reach HRC40 ~ 50. We use old leaf springs replaced by many cars in the scrap pile, made of 55Si2Mn, 60Si2Mn, 63Si2MnA or 50CrMnA hot-rolled spring flat steel. After heat treatment, the hardness of HRC61 ~ 68, the microstructure of uniform tempering and sorbite, hardness, toughness