A wear fault is a fault that is expected from the design and is inevitable due to normal wear. A wear fault is a fault caused by unavoidable normal wear that has been anticipated at design time. A wear fault is a fault caused by normal wear. For such fault forms, life prediction is generally performed, parts or components are replaced, and clearance compensation due to wear is performed. For example, the CNC machine works normally, but the position deviation of the Z (X) axis is too large. The fault form may be caused by the excessive gap caused by the screw wear, which requires mechanical clearance adjustment or replacement of the lead screw, or it can work in the way. In the selection, select the parameter setting and input the backlash compensation of the Z (X) axis to determine whether it is a wear fault.
The principle and countermeasures of wear faults:
According to the nature of the equipment failure, the equipment failure is divided into congenital, abrasive and abusive. Among them, the wear fault is the most common and regular fault type, and the principle and countermeasures of the wear fault are the important content of the basic theory of modern equipment management.
The wear of mechanical equipment can be divided into two aspects: physical wear and invisible wear.
Tangible wear, including the change of physical form caused by friction, impact, vibration, fatigue, corrosion, deformation, etc. during the use of the device, causing its function to gradually (or suddenly) decrease and loss; also including corrosion during idle operation of the equipment Changes in physical form caused by deterioration, aging, etc., cause the function to be reduced and lost.
Invisible wear is manifested in the value of the equipment, which is not due to the influence of natural forces during use. There are two reasons for the devaluation:
The first is due to technological advancement and increased labor productivity. The cost of producing the same equipment is constantly decreasing, forcing the original equipment to depreciate, also known as the first type of invisible wear.
The second type is due to the emergence of new equipment superior to the original equipment in terms of structure, principle, function, cost, etc. The original equipment appears to be technically outdated and backward in function, and the resulting devaluation is also called the second invisible wear. .
The countermeasure against equipment wear is compensation. Compensation for equipment wear is a technical organizational measure for additional investment to restore or improve the functionality of the equipment system components. The way and extent of wear is different, and the corresponding compensation method is different.
There are three ways to compensate for equipment wear, namely repair, replacement and technical modifications. For some physical wear, it can be repaired by repair techniques. For some wear and tear, such as part breakage, material aging, etc., the original function can only be restored by means of component or equipment replacement. The elimination of invisible wear can only be achieved after taking measures to improve its technical performance and improve its technological advancement. Repair, replacement and technical transformation work may occur in the maintenance work of the generator set. These three different types of work have significant differences (see Figure 1). As a compensation method, it is a countermeasure for equipment management. Which kind of compensation method is used depends on the wear form and wear level of the equipment, but ultimately it depends on the implementation. Economic evaluation at the time of compensation. The role of compensation has restored and improved the reliability, maintainability and usability of the equipment.
Therefore, the purpose of equipment maintenance is to re-improve the equipment system and restore or improve the functions of the equipment. While the loss of the equipment compensates for the physical form, it also compensates for its economic value. Titanium Machinery is the main product of the company with machine tool spindle, rotary ejector pin, screw screw, shaft machining, CNC lathe machining, shank shank and collet post. The core problem of equipment maintenance is based on equipment wear or loss. In accordance with the business objectives of the company, select the correct maintenance method and maintenance level for the specific equipment, and rationally arrange the maintenance plan and put it into practice.
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