By using materials with good wear resistance to replace the previously used gear materials, the wear resistance of the gear surface can be directly improved, and then the service life of the gear can be improved. For example, the wear resistance of 20CrMnTi gear material, which is widely used...
a. The curves of bending P-S-N of 20crnimoh material with different survival rates of shot peened and non shot peened gears are obtained. The power function indexes of the two kinds of gears are similar, that is to say, the slope of oblique line of S-N curve of the...
A more detailed chemical composition analysis of the gear material sent for inspection is performed based on the spectral analysis method.The test results are shown in the table.The table also lists the standard compositions of 42CrMoA steel in the national standard GB/T 3077-2015 Alloy Structural Steel for comparison. The...
a. In gear manufacturing, two kinds of test gears adopt the same material, the same machining and heat treatment process, only the difference between shot peening and non shot peening. The shot peening gears are processed in the same batch to ensure the consistency of shot peening strengthening effect...
According to the calculation results, the curve of bending P-S-N of two different process gears of 20crnimoh material is shown in Fig. 1 and Fig. 2, and the curve of S-N of 50% survival rate of two different process gears is shown in Fig. 3. The power functions of...
1. Group test results Data of fatigue test results obtained by group method of shot peened gear and non shot peened gear. According to Chauvenet criterion, the suspicious data of each group were selected and processed. Among them, the test data of each group of shot peened gear are...
1. Test method The bending fatigue test fixture of gear material adopts the single tooth loading method shown in Figure 1. In this test method, friction is used to fix the test gear to the tightening torque of the fastening bolt. The test method shall be in accordance with...
Bending fatigue performance is an important index to evaluate the bearing capacity of gears. Shot peening is an effective way to improve the bending fatigue performance of gears. Many mechanisms at home and abroad have studied the factors affecting the bending fatigue performance of gears. The original FAW technology...
The manufacturing error of gear not only affects the stability of power transmission, resulting in vibration noise and dynamic load of transmission system, but also affects the contact performance of gear tooth surface, thus affecting the bearing capacity and service life of gear transmission. Fault diagnosis based on dynamic...
With the global shortage of resources and the aggravation of environmental pollution, people pay more and more attention to the efficient, energy-saving and low pollution gear green manufacturing method. In order to improve the manufacturing efficiency and performance and save resources, researchers have studied the metal flow direction, residual...