The valve plate is quenched using a high-frequency induction quenching machine. Analysis of the causes of heat treatment defects and their preventive countermeasures

Compressors are mechanical equipment widely used in chemical machinery. The valve disc is an important wearing part. During the working process, the valve disc needs to move up and down quickly, so the valve disc needs to have a certain hardness and wear resistance, high strength and a certain The impact toughness of the valve plate requires necessary heat treatment and surface chemical heat treatment. The most commonly used equipment for valve plate heat treatment is high-frequency induction quenching machine. Regarding the heat treatment of the valve plate, I will not describe it here. You can take a look at the heat treatment process and implementation points of the valve plate. However, during the heat treatment process, affected by many factors, the valve plate may produce some quenching defects. How to prevent the occurrence of such quality problems is always something that heat treatment operators need to think about during the heat treatment process. Now, let’s take a look at the analysis of the causes of heat treatment defects and their preventive measures when the valve plate is quenched using a high-frequency induction quenching machine.

1. The band-like tissue level exceeds the standard. The causes and preventive measures are as follows:

(1) The heating temperature is low or the holding time is insufficient. We should strictly implement the temperature and time required by the process.

(2) The cooling speed of the furnace is slow or there is accumulation. We should quickly discharge and spread the valve plates to ensure that the band structure is eliminated.

2. The valve plate is deformed. The causes and preventive measures are as follows:

(1) If there is a collision with other objects during quenching, we should ensure that the valve plate quenching operation is standardized.

(2) The tempered tire mold is deformed or not compressed. We should strictly check the tire mold and compression condition to make it meet the requirements.

3. The hardness of the substrate is unqualified. The causes and preventive measures are as follows:

(1) If the quenching temperature is low or the holding time is not enough, we should check and determine the actual heat treatment process parameters.

(2) The medium temperature does not meet the process requirements, and the temperature must be adjusted as required.

The heat treatment of the valve plate is very important for the valve plate. Today, we briefly analyzed the causes of defects caused by the quenching heat treatment of the valve plate and the preventive measures. We hope it will be helpful to your work. We hope you can apply the knowledge you learned today into practice and produce high-quality valve discs.