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Wholesale sprocket B type single tells about the causes of sprocket cracks
Time:
2021-12-01
Grinding cracks refer to the surface cracks of the gear teeth that are usually exposed in a somewhat regular pattern during or after the gear grinding. The cracks are short, not very deep, roughly parallel to each other, usually perpendicular to the track of the grinding wheel, or show a crack pattern. Grinding cracks will also be accompanied by grinding burns, which are easy to find after being etched with a nitrate solution.
Due to one or more reasons, such as improper grinding, improper heat treatment, excessive stress, or material defects, cracks and cracks may appear on the sprocket. Follow the editor of Wholesale sprocket B type single to learn more about it!
1. Quenching cracks
Quenching crack refers to the crack caused by excessive internal stress during the heat treatment of the gear. This kind of crack often appears during the quenching process, but it can also be caused by other reasons. Partially hardened gear tooth surfaces hardened by flame or induction hardening are more prone to this form of damage than full-profile hardened gear tooth surfaces or hardened and tempered gear tooth surfaces. Sometimes the cracks produced in the quenching process only gradually show up after a period of time or during tooth grinding.
2. Grinding cracks
Grinding cracks refer to the surface cracks of the gear teeth that are usually exposed in a somewhat regular pattern during or after the gear grinding. The cracks are short, not very deep, roughly parallel to each other, usually perpendicular to the track of the grinding wheel, or show a crack pattern. Grinding cracks will also be accompanied by grinding burns, which are easy to find after being etched with a nitrate solution.
3. Fatigue cracks
Fatigue crack refers to the zero pattern that expands under repeated alternating stress or cyclic stress, which is significantly lower than the tensile strength of the material. Sometimes the initial crack due to overload will grow slowly like a fatigue crack.
The above is the editor of Wholesale sprocket B type single: a brief introduction to the crack knowledge of sprocket.
Keywords:
sprocket,B,type,single
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