Research on the side quantity of bolts for a magnetic noise process
Determination of the MBN value of the G-type connecting rod bolt The G-type connecting rod bolt produced by our factory is made of 18Cr2Ni4WA. In order to ensure the performance of the bolts, we check the bolts after quenching and tempering for hardness test, and we need to control the hardness value within a certain range to ensure that the bolt can reach the required mechanical performance index. Due to the high output of the connecting rod bolts per year in the factory, it is necessary to perform a hardness test on a large number of connecting rod bolts in the field, which is time consuming and laborious. With CTY601 multi-function magnetoelastic, all connecting rod bolts can be tested quickly, accurately and without damage. Select the connecting rod bolts with abnormal values ​​and perform grinding and hardness tests. This can not only achieve full inspection, but also reduce manpower and material resources. It is a preferred project with development prospects. We continuously measured about 150 connecting rod bolts in 4 months. Comparing the MBN value of the G-type connecting rod bolt with the HRC value, we compare the MBN value of the connecting rod bolt with the sample number and compare it with the measured hardness value (HRC) of the workshop to find out the MBN value and the HRC value. Correspondence relationship. Because the test part of the same bolt is different between the workshop and the testing center, the difference between the measured values ​​is different. (The part measured in the workshop is slightly decarburized near the surface of the workpiece, and the HRC value measured by the testing center is the hardness value of the core, so the workshop The measured values ​​are lower than the detection center. When the MBN value of the same heat is large, the HRC value is small. When the MBN value is small, the HRC value is large. When the MBN value is abnormal, the hardness HRC is also abnormal. Interactive Lamp,Interactive Pillar Lighting,Sensor Luminous Pillar Light,Colorful Interactive Touch Light Sichuan Kangruntengpu Photoelectric Technology Co., Ltd. , https://www.tengpulighting.com