新型分段复合镐形截齿试验研究

镐形截齿的各种失效形式中磨损失效占比最大为80%~90%,而其他形式失效仅占10%~20%,由于硬质合金刀头与支承硬质合金刀头的齿体在硬度和耐磨性上差异过大,使得实际使用中硬质合金刀头只产生较少磨损而支撑硬质合金刀头的齿体部分却产生了大量磨损,支承强度急剧下降,最终导致硬质合金刀头脱落,是镐形截齿磨损失效的主要原因。为解决磨损失效问题提出了新的分段复合镐形截齿的解决方案并给出了制造工艺方法,初步实验结果表明,分段复合镐形截齿较传统截齿使用寿命提高约1.6倍。

Experiment on Late-model Sectional Composite Round Shaft Chisel

One of most worldwide-spread using cutting tools is round shaft chisel which takes 80%~90% of wear failures and 10%~20% of other failures,among various failure modes.The primary reason for wear failure of round shaft chisel is that heavy wear and tear of chisel body breaks itself off when hard alloy chisel tip is less wore.We bring forth a solution and give manufactural technics of sectional composite round shaft chisel,which is 1.6 times longevity longer than traditional chisel as shown in experimental results.