Intuitive method means finding and analyzing faults based on the external performance of the induction melting furnace failure without any instrumentation. Direct observation includes no power check and power on observation. In the overhaul, first check the non-energization, use the human sensory organs (eyes, ears, hands, nose) to check for loose plugs, poor contact, solder joints, open circuit, short circuit, component rust, zoom, discoloration and fuses. Melt blowing and other phenomena. The intuitive method is the most basic and simple method. The maintenance personnel can reduce the fault to a certain module by observing and checking various abnormal phenomena such as light, sound and taste generated when the fault occurs. The board even goes to a component. However, it requires maintenance personnel to have a wealth of practical experience.

    Before performing the visual inspection, the user and the fault presence personnel should be inquired about the situation, including the external performance of the fault, the approximate location, the environmental conditions at the time of the fault, whether there is abnormal gas, open flame, whether the heat source is close to the induction melting furnace, and whether it is corrosive. Gas intrusion, whether there is water leakage, whether someone has repaired and repaired the contents.

    In the implementation process of the intuitive method, we should adhere to the principle of simplicity, complexity, and externality. In actual operation, the first is to obtain the random technical data of the induction melting furnace, and the second is to shape, name, represent letters, circuit symbols and functions of various electronic components in the inductive melting furnace. A pair of numbers can accurately identify electronic components. When using the intuitive method of maintenance, it is mainly divided into the following three steps.

    (1) External inspection. Before inspecting the induction melting furnace, first observe whether the buttons, sockets, and external connections on the induction melting furnace are damaged.

    (2) Internal inspection. Observe whether the melt of the fuse is blown, whether the components touch, disconnect, change color, whether the circuit board is plugged reliably, whether there are loose parts and discoloration on the circuit board, whether the copper foil and solder joints are good, whether there is any maintenance Over. When inspecting the inside of the induction melting furnace, you can use hand to move some components, components, and circuit boards to fully check.

    (3) Inspection after power-on. After the induction melting furnace is energized, the eyes should look at the inside of the induction melting furnace for ignition or smoke; the ear should be sensitive to the presence of abnormal sound inside the melting furnace; the nose should smell the inside of the melting furnace with or without burning smell; Whether transistors, integrated circuits, etc. are hot (should be safe, avoid causing personal and equipment accidents), if there is abnormal heating, shut down immediately.

    The intuitive method is very simple, does not require other instruments and meters, and is effective for overhauling general faults and damaged faults of induction melting furnaces. Intuitive method detection is more comprehensive, and it is closely related to the maintenance personnel's experience, theoretical knowledge and professional skills. Intuitive methods need to accumulate experience in a large number of overhaul practices in order to be skilled. Intuitive method testing often runs through the entire process of repair, and works better with other test methods.