The pressure sealing process is a technology commonly used in the field of metal processing and fabrication to effectively control and block the internal pressure of a part during machining. This paper will introduce the principle, application field, process steps and precautions of the sealing process with pressure in detail.

First, principle:

The pressure sealing process is a processing method that uses the sealing tool to apply pressure to the inside of the part to prevent the flow, deformation or leakage of the internal material. By applying external pressure during the machining process, the deformation and flow of the metal material can be effectively controlled and limited, thus achieving precise control of the internal geometry and size of the part.

2. Application field:

Pressure sealing process is widely used in various metal processing and manufacturing fields, especially in hydraulic parts, pneumatic parts, automotive parts, aerospace devices and other high-precision requirements. In addition, in some parts that need to process the internal cavity, such as pipes, tanks, containers, etc., the pressure plugging process can also be used.

Third, process steps:

1. Select the right plugging tool: Select the right plugging tool according to the shape and size of the part. Commonly used plugging tools include plugging, plugging glue, plugging film and so on.

2. Determine the sealing position: Determine the sealing position according to the design requirements and processing needs of the parts. In general, the sealing position should be as close as possible to the internal cavity that needs to be controlled.

3. Apply external pressure: Use appropriate equipment and tools to apply external pressure to the sealing position. Hydraulic, pneumatic or mechanical equipment can be used to achieve the purpose of applying pressure.

4. Processing operation: under the conditions of applying external pressure, the parts are processed. According to the specific needs, cutting, drilling, milling, grinding and other processing operations can be carried out.

5. Control the processing quality: In the entire processing process, the processing quality needs to be strictly controlled. By monitoring and controlling the size and stability of the external pressure, as well as the temperature, speed and other parameters during the processing, the processing quality and dimensional accuracy of the parts are ensured.

Iv. Precautions:

1. Select the appropriate plugging tools and materials to ensure that they have sufficient strength and pressure resistance.

2. Before applying external pressure, the sealing position should be carefully cleaned and treated to ensure the sealing effect.

3, in the processing operation, to control the processing parameters to avoid excessive processing or excessive deformation, resulting in parts failure or unqualified.

4. According to the actual situation, you can choose the appropriate processing lubricant or cutting fluid to improve processing efficiency and surface quality.

5. After the processing is completed, the plugging tool should be cleaned and maintained in time to ensure its long-term effective use.

Summary: The sealing process with pressure is an effective method to control and seal the internal pressure of parts, which is widely used in the field of metal processing and manufacturing. Through the reasonable selection of sealing tools and the application of external pressure, the precise control of the internal shape and size of the part can be achieved, and the processing quality and efficiency can be improved. In practical applications, it is necessary to select appropriate plugging tools and materials, strictly control processing parameters, and timely cleaning and maintenance of plugging tools.