Discussione sulle cause dei guasti di Melt Conversing Gear Pu

　　A complete melt transmission gear pump is mainly composed of four parts: motor, reducer, universal coupling and pump head. Haike is a professional melt pump manufacturer in China. Melt pumps include plastic sheet melt pumps, high temperature extruder melt pumps, high viscosity melt pumps, etc.

　　For spur gears, there are two main reasons for tooth breakage: the first is that when the gear is suddenly overloaded, it will break. No foreign body is found to enter the gear after disintegration, and from the point of view of the broken part at the root of the gear, the possibility of breaking the gear under sudden overload can be ruled out. The second reason is that the gear teeth are like a cantilever beam, the bending stress at the root of the tooth is larger after loading, the size of the transition part at the root of the tooth has changed greatly, and the machining tool marks along the width direction of the tooth have caused a certain degree of stress concentration. Therefore, when the gear is repeatedly loaded, the bending stress at the root of the tooth is larger. Fatigue cracks will occur at the root of the teeth and gradually expand, resulting in the breakage of the teeth, which is the direct reason for the breakage of the driven gear of the W-wheel pump pumped by melt.