Dry cargo analysis of stud bolts

Bolt manufacturers must determine the equipment and machine tools in the production and manufacture of stud bolts. Of course, the production and processing procedures are relatively simple. The machine will straighten the distorted material, and after passing this process, the next process can be completed. The next process is to use the automatic cutting machine to cut the straightened longer material into the length required by the customer according to the user's requirements, which is After completing the second process, the third process is to put the cut short material on the thread rolling machine and roll it out of the thread mouth; after the ordinary stud bolts are processed here, of course, if other requirements are required, then Another process is required. The commonly known anchor bolts refer to screws with a larger diameter. According to this point of view, the diameter of the screw is much smaller than that of the anchor bolts. Studs do not have heads, and some are called studs. There are threads on both sides of the stud, no threads in the middle, and a bare rod in the middle. Stud bolts are used on large equipment such as reducer frames. In the actual use, the external load will vibrate and the sliding friction will be reduced due to the influence of temperature. In the long run, the flange connection will be loose and invalid. Therefore, it is necessary to do a good job in the maintenance of stud bolts in the normal process. Stud bolts or anchor screws may cause problems under the action of long-term mechanical friction. In the process of occurrence, the engine oil pan must be disassembled, and the use of the engine piston pin must be carefully checked. , Check whether the gap between the piston pin is too large, if the gap is too large, it needs to be replaced immediately. In the case of replacing the stud bolts, the crankshaft anchor bolts also need to be replaced. Some large-scale equipment such as nail making machines need to stop and check in time if they find that the engine is not running smoothly or makes abnormal noise during daily operation, so as to avoid serious problems. In every overhaul, it is necessary to inspect the newly replaced stud bolts and other newly replaced accessories. During the inspection process, the head and guiding part of the stud bolts are mainly placed, and the external thread must be strictly inspected Whether there are cracks or pits in each part, you also need to check the tooth shape of the stud bolts to see if there is any change. Whether there is any abnormality in the tooth distance, if it is found to be abnormal, it must not be used again. The special tool torque wrench should be used when installing the crankshaft cover. It should be tightened according to the specifications, the torque should not be too large or too small, and attention should be paid to the selection of stud bolts and studs from supporting equipment manufacturers.