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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge> Bearing professor analyzes the reasons and methods of failure linear bearings Bearing Professor Analyzes the Causes and Methods of Failure Linear Bearings
1. Wear and failure Wear and tear refers to the failure of the relative sliding between the external appearances to cause the wear and tear of the metal on the surface of the operation. The continued wear will lead to the gradual damage of the linear bearing parts; and the end of the linear bearing dimensional accuracy loss and other related problems Wear can affect the shape change; the cooperation gap increases and the work appearance changes; can affect the smoothing agent or make the pollution reach a certain extent and constitute a smooth loss of smooth function; thus the linear bearing loses the rotation accuracy and can not work normally. Wear Failure is one of the common failure modes of various types of bearings; according to the wear method, it can be generally divided into the most common abrasive wear and adhesive wear. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Abrasive wear refers to the abrasion caused by the extrusion of foreign solid particles or hard foreign objects or metal appearance between the outer surface of the linear bearing operation, and the wear caused by the relative movement of the external surface; often the furry-like scratch on the outer surface of the bearing operation. Hard The particles or foreign matter can come from the inside of the host or other adjacent parts from the host system are fed into the linear bearing by the smooth medium. The common sense of the linear bearing accuracy error. Adhesive wear refers to the conflict surface due to the microscopic bump or foreign matter of the conflicting appearance. Uneven force; when the smooth condition is severely deteriorated; due to partial conflict heat generation; easy to form part of the conflict surface deformation and conflict micro-welding; when the surface is severe, the surface metal can be partially melted; the touch surface effect will be part of the conflict welding point Tearing from the substrate to increase plastic deformation. This adhesive tearing adhesion process constitutes adhesive wear; in general; fine adhesive wear is called scratch; severe adhesive wear is called bite.
2, touch fatigue failure touch fatigue failure refers to the effect of linear bearing operation on the appearance of alternating stress and failure. Touch fatigue occurs in the appearance of linear bearing operations; often accompanied by fatigue cracks; first from the touch of the surface below the maximum alternating The shear stress occurs; then it expands to the outer surface to form a different shape of the shedding; if the point is pitting or pitting, the shallow part of the strip is peeled off. Because of the gradual enlargement of the shedding surface, it tends to expand deeper. Forming deep detachment. Deep detachment is the source of exhaustion that touches fatigue failure.
3, cracking failure Linear bearing crack failure The primary cause is the shortcomings and overload two major elements. When the applied load exceeds the data strength limit and the component cracking is called overload cracking. The overload is caused by the host sudden fault or the device is not proper. Bearing parts Micro-cracks, shrinkage cavities, air bubbles, large foreign objects, overheating arrangements and partial burns, etc., also cause cracking at the disadvantages during impact overload or severe oscillation; called short-term cracking. It should be pointed out; linear bearings are in the process of production. For the re-inspection of the original data, the quality control of the casting and heat treatment, and the processing of the processing process, the above-mentioned shortcomings can be correctly analyzed through the instrument; the control must be strengthened later. Generally speaking, the linear bearing cracking failure generally appears. Most are overloaded.
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Bearing Professor Analyzes the Causes and Methods of Failure Linear Bearings
Source: China Bearing Network Time: 2014-04-01