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The Reason For The Failure Of The Bucket Teeth
Excavator Bucket Teeth is an important part of the excavator, similar to the human teeth, but also wearing parts, is composed of tooth and tooth tip combination of bucket teeth, both by pin connection. As the bucket tooth wear failure part of the tooth tip, as long as the replacement of the tip can be. As a result of the financial crisis, our country actively stimulated domestic demand, making the domestic bucket teeth market had a positive effect, making a lot of domestic bucket teeth manufacturers market prospects are excellent!
An open-end excavator bucket teeth in the course of the use of serious wear and tear due to early failure, for the bucket teeth, analysis of the bucket teeth surface failure form and failure reasons, and put forward improvement measures. The failure of the bucket teeth in different working conditions under the service by varying degrees of wear and shock occurred in varying degrees, different forms of failure. The bucket teeth in the normal working conditions only 3 days (about 36h or so) will be invalid, both from the economic point of view or from the use of angle, are not required. From the macro photos of the batch of failure pieces can be seen, the bucket teeth before the working surface has a more obvious furrow scratches, the tip of a small amount of plastic deformation, no cracks, the former face (face contact with the ground) the thinnest 4mm, after the working surface is about 8mm.
Force analysis of the bucket face and the excavated material in contact, in a complete excavation process of different stages of its different force situation. When the tip part first touches the surface of the material, the bucket tip is subjected to a stronger impact due to the faster speed. If the yield strength of the bucket teeth is low, plastic deformation will occur at the tip. With the increase in the depth of excavation, bucket teeth force situation will change.
When the bucket teeth cutting material, the bucket teeth and the relative movement of the material in the surface to produce a large positive squeeze pressure, so in the bucket teeth face and the material between the greater friction. If the material is harder rock blocks, concrete, etc., the friction will be great. The result of this process is repeated in the bucket teeth face to produce varying degrees of surface wear, and thus produce a deeper depth of the furrow.