齿形链链板废品分析

Silent Chain Chain Plate Waste Analysis

本文通过对齿形链链板的断口分析、金相组织检验以及链板齿根部位的检验发现,造成齿形链链板废品的主要原因是因为板料冲压所用模具刃口已经变钝或凸凹模间隙大,导致表面撕裂严重、粗糙度大、沟槽明显且有效承载面积明显减小而形成裂纹源。热处理工艺不当而导致组织不合格引起的。

Based on the silent chain chain plate fracture analysis, metallographic examination of tooth roots, and chain plate test showedthat plate waste caused by silent chain the main reason is because the sheet metal stamping dies used to have blunt or concave edge die gap, leading to surface serious tear, roughness large, clear and effective bearing area of trench significantly reduced the formation of the crack source. It is caused by improper heat treatment leading to tissue failure.