What is riveting by pressure? How to carry out the quality control of riveting by pressure
What is riveting?
Riveting is a process method that fixes rivets or other connecting parts onto workpieces through pressure. It applies pressure to the connection part to cause the material to undergo plastic deformation, thus achieving a reliable connection between parts. Riveting is often used for the connection of metal sheets, plastics or other materials and is an efficient and reliable connection method.
How to carry out quality control in riveting?
Quality control in riveting is a key link to ensure product reliability and performance. The following are the quality control points in the riveting process:
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Material Inspection
Inspect the material, specifications and models of the riveted parts (such as nuts, screws, studs, etc.) and workpieces to ensure they meet the requirements of the drawings.
Check the cleanliness, flatness and freedom from oil stains of the workpiece surface to ensure the connection quality.
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Equipment Calibration
Regularly calibrate and maintain the riveting equipment (such as riveting machines) to ensure that the equipment parameters such as pressure, speed and temperature are stable and controllable.
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Process Control
Operate strictly in accordance with the riveting process requirements, including steps such as pre-pressing, positioning, riveting and cooling.
Ensure the accurate installation position of the riveted parts to avoid riveting at an angle or off-center.
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Quality Inspection
Appearance Inspection: Check the appearance of the riveted parts to ensure there is no obvious deformation, indentation or die mark.
Dimensional Inspection: Check the concentricity, flatness and thread quality of the riveted parts to ensure they meet the standards.
Firmness Inspection: Use methods such as tensile test and torque test to ensure that the riveted parts do not loosen or fall off.
Random Sampling Inspection: Randomly sample and inspect the material, specifications and threads of the riveted parts to confirm that they meet the requirements of the drawings.
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Recording and Traceability
Establish a complete riveting recording system to record the data and test results of each production, so as to trace the source of quality problems.
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Defective Product Handling
Handle the discovered defective products in a timely manner, including repair, rework or scrapping, to ensure that defective products do not enter the next process.
The Process of Riveting
The typical process of riveting includes the following steps:
Preparation: Determine the workpieces and connecting parts to be connected and carry out cleaning and surface treatment.
Installation of Connecting Parts: Place the connecting parts at the connection parts of the workpieces to ensure accurate positioning.
Apply Pressure: Use riveting equipment to apply sufficient pressure to cause the material between the connecting parts and the workpieces to undergo plastic deformation.
Check Connection Quality: After riveting, check the connection to ensure its firmness and stability.
Through the above quality control methods, the processing quality of the riveting process can be effectively improved to ensure that the products meet the design requirements and meet the expectations of customers.
