In the above, the above explanation explains that the high and low temperature alternating humid heat box should correctly analyze and judge the fault location during maintenance. Then, besides this, what should we pay attention to?
2. Master a reasonable welding process
In addition to the reasonable maintenance plan and the correct operation method, the welding process is also very important for the high and low temperature alternating humid heat box in which the refrigeration system fails. The main reason for the high repair rate is that the welding torch flame is improperly adjusted during welding, so that the solder joint temperature is not enough to form a virtual soldering, and the leak detection does not carefully bury the micro-leak hidden danger, or generates vibration during operation to cause the solder joint to be de-soldered or cracked to cause leakage. .
In another case, the solder joint temperature is too high, and the soldering of the inner wall of the pipe joint (especially the capillary and filter joint) is severely oxidized and de- delaminated at a place for a long time and multiple times, or part of the solder flows into the joint nozzle, resulting in The cooling pipe is dirty and welded, so that the high and low temperature alternating wet heat box can not work normally.
The correct welding method should adjust the torch flame to a neutral flame (the ratio of oxygen to acetylene is equivalent). Use sandpaper or trowel to remove dirt from the joint before welding. The torch flame should move back and forth around the joint. When the joint is heated to dark red, weld it with the electrode. If the joint is a copper tube and a steel tube, due to their different expansion coefficients, silver or brass electrodes should be selected for welding, and flux should be used.
Later, Xiaobian will explain more about the high and low temperature alternating humid heat box. You can also log in to our official website to leave a message, and Yashilin Instruments will exchange ideas with you.
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