Detailed division of faults in intermediate frequency quenching and tempering production lines

Detailed division of faults in intermediate frequency quenching and tempering production lines

1) Classification by nature of fault
 
(1) Systematic failure. Systematic failure refers to a deterministic failure that must occur as long as certain conditions are met. A deterministic failure refers to a hardware failure in an intermediate frequency quenching and tempering production line or a failure that will occur in an intermediate frequency quenching and tempering production line as long as certain conditions are met. This kind of fault phenomenon is more common in the operation of medium frequency quenching and tempering production line, but it has certain rules and brings convenience to maintenance.
 
Deterministic faults are irreversible. Once the fault occurs, the intermediate frequency quenching and tempering production line will not automatically return to normal if it is not repaired. However, as long as the root cause of the fault is found, the intermediate frequency quenching and tempering production line can be restored immediately after the repair is completed. normal. Proper use and careful maintenance are important measures to prevent or avoid system failures.
 
(2) Random failure. Random failure refers to the accident that occurs in the intermediate frequency quenching and tempering production line during the working process. The cause of such failures is relatively hidden, and it is difficult to find out its regularity, so it is often called "soft fault". The cause analysis and fault diagnosis of random faults are difficult. Generally speaking, faults are often related to many factors such as the installation quality of components, the setting of parameters, the quality of components, imperfect software design, and the influence of working environment. Random faults are recoverable. After a fault occurs, it can usually be restored to normal by means of restarting, but the same fault may occur during operation. Strengthening the maintenance inspection of the intermediate frequency quenching and tempering production line to ensure reliable installation, connection, proper grounding and shielding of electrical equipment is an important measure to reduce or avoid such failures.
 
2) According to the fault when there is no indication
 
According to the presence or absence of the fault, there are indications that there are diagnostic indication faults and no diagnostic indication faults. Today's IF quenching and tempering production lines are designed with a complete self-diagnosis program to monitor the software and hardware performance of the entire system in real time. Once a fault is found, it will immediately alarm, and some brief texts will be displayed on the LCD screen, combined with the system. The diagnostic manual not only finds the cause and location of the fault, but also the troubleshooting tips.
 
Manufacturers of intermediate frequency quenching and tempering production lines will also design relevant fault indications and diagnostic instructions for specific intermediate frequency quenching and tempering production lines. Combined with the displayed fault information and various types of indicators on the intermediate frequency quenching production line, it is easier to eliminate most faults.
 
Some of the faults without diagnostic indications are caused by the incompleteness of the fault diagnosis program of the intermediate frequency quenching and tempering production line. Such faults are based on the working process, fault phenomena and consequences before the fault occurs, and rely on the maintenance personnel to be familiar with the intermediate frequency quenching and tempering production line. The degree and technical level are analyzed and excluded.
 
The fault display of the IF quenching and tempering production line can be divided into two types: indicator display and display display.
 
 (1) The indicator light shows an alarm. The indicator light indicates that the alarm indicator is displayed by the status indicator of the intermediate frequency quenching production line (generally composed of LED light tube or small indicator light). According to the operation status indicator and fault status indicator of the intermediate frequency quenching and tempering production line, the location and nature of the fault can be roughly analyzed and judged. Therefore, the status of these status indicators should be carefully checked during maintenance and troubleshooting.
 
 (2) The display shows an alarm. The display shows that the alarm can display the fault alarm information through the display. Because the medium frequency quenching and tempering production line has strong self-diagnosis function, if the diagnostic software and display circuit of the intermediate frequency quenching and tempering production line work normally, then once the system fails, it can be The fault information is displayed on the display in the form of an alarm symbol and text. The IF quenching and tempering production line can display dozens of kinds of alarm information, and there are thousands of kinds of alarm information. It is important information for fault diagnosis.
 
    3) Classification according to the cause of the failure
 
    The intermediate frequency quenching and tempering production line is divided into its own fault and external fault according to the cause of the fault, which is also classified according to the position where the fault occurs.
 
    (l) The IF quenching and tempering production line itself is faulty. The fault of the IF quenching and tempering production line is caused by its own fault. The occurrence of such fault is caused by the IF quenching and tempering production line itself, and has nothing to do with the external environmental conditions. Most of the faults that occur in the IF quenching and tempering production line are such faults.
 
    (2) External failure of the intermediate frequency quenching and tempering production line. The external fault of the intermediate frequency quenching and tempering production line refers to the fault caused by the change of external device performance and the change of environmental conditions related to the intermediate frequency quenching and tempering production line, such as the failure of the related components such as water pressure relay, temperature sensor, mechanical device, etc.; The voltage of the phase power supply is unstable, the three-phase current is unbalanced, the external electromagnetic interference, the ambient temperature is too high, and the malfunction of the intermediate frequency quenching and tempering production line caused by harmful gases, moisture, dust intrusion, and external vibration.
 
    4) Classification according to the location of the fault
 
    According to the fault occurrence of the intermediate frequency quenching and tempering production line, it is divided into hardware fault and software fault. Hardware failure refers to the physical damage of the medium frequency quenching and tempering production line hardware: one is caused by human and environmental reasons, such as poor environment, poor power supply, static electricity damage or violation of operating procedures; second, the reasons for the components of the intermediate frequency quenching and tempering production line, such as components, Contact plug-in, printed circuit, wire and cable damage, etc., which is a fault that needs to be repaired or even replaced.
 
A software failure is a failure caused by a software system error. Common software failures include program errors, operational errors, and setup errors and blind operations. Software failures are failures that require input or modification of certain data or even modification of the program.

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