In bolt connection processes, the application of glue is not only an effective means to enhance connection performance but also a crucial measure to ensure long-term stable operation of equipment. By applying glue, the sealing performance of bolt connections is significantly improved, effectively preventing liquid or gas leakage. Additionally, it enhances anti-loosening capabilities and corrosion resistance, thereby extending the service life of the equipment. Therefore, the tightening quality of glued bolts requires careful control at multiple key stages to ensure process reliability and consistency.

First, the operational time window after glue application is a critical factor affecting tightening quality. After the thread adhesive is applied, the tightening operation must be completed within a specific timeframe, typically recommended within 3 to 5 minutes. During this period, the adhesive maintains optimal viscosity and fluidity, allowing it to fully fill the tiny gaps between threads and form a uniform and dense sealing layer. If tightening is performed too early, the adhesive may not have adequately penetrated; if too late, the adhesive may begin to cure, resulting in suboptimal sealing. Therefore, operators must strictly follow process requirements and complete the tightening operation within the specified time to ensure the adhesive fully exerts its sealing and anti-loosening functions.

Second, torque control is another key factor in ensuring the connection quality of glued bolts. Excessive torque may cause the adhesive to extrude, compromising the sealing effect, while insufficient torque may result in an insecure connection and reduced anti-loosening capability. To accurately control torque, it is recommended to use an intelligent electric screwdriver and implement a step-by-step tightening strategy. Specifically, the target torque can be divided into three stages: 60%, 80%, and 100%. In the first stage, apply 60% of the torque to allow the adhesive to initially fill the thread gaps; in the second stage, apply 80% to further compact the adhesive and ensure even distribution; in the third stage, apply 100% to achieve the required tightness. This gradual tightening approach not only prevents adhesive extrusion but also effectively avoids sealing degradation or connection loosening due to stress concentration.

Additionally, environmental temperature and humidity conditions during the operation also significantly impact the tightening quality of glued bolts. The curing speed and performance of thread adhesives are greatly influenced by ambient temperature and humidity. In environments with excessively high temperatures or humidity, the adhesive may cure too quickly, shortening the operational time window. Conversely, in low-temperature or low-humidity conditions, the adhesive may cure slowly, affecting connection strength. Therefore, during actual operations, it is necessary to select appropriate temperature and humidity conditions based on the adhesive product specifications and, if necessary, implement environmental control measures to ensure the adhesive cures as expected.

Before the operation, proper cleaning of the thread surface is equally important. Oil, dust, or other contaminants on the thread surface can compromise the bonding strength between the adhesive and the metal surface, reducing sealing effectiveness and anti-loosening capability. Therefore, before applying the adhesive, it is recommended to clean the thread surface using appropriate cleaners or tools to ensure cleanliness. Alternatively, a screw feeder with cleaning and feeding functions can be used. A clean thread surface allows the adhesive to form a stronger bond, thereby enhancing the overall performance of the connection.

In summary, ensuring the tightening quality of glued bolts requires comprehensive control across multiple aspects. By strictly managing the operational time after glue application, controlling tightening torque, appropriately adjusting environmental temperature and humidity, and cleaning the thread surface, the sealing performance, anti-loosening capability, and corrosion resistance of bolt connections can be effectively improved. These meticulous process controls and scientific operational methods not only ensure the connection quality of glued bolts but also provide reliable assurance for the long-term stable operation of equipment. In practical applications, operators must flexibly adjust operational parameters based on specific working conditions and process requirements to achieve optimal connection results.