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  • Quenching sensor failure case and life improvement approach-4
    8.The effective nose tip is melted, and the magnetizer is cracked. The inductor will melt and thicken the copper tip after a period of use. The magnetizer at this place is cracked. Some of the effective rings have welds in the part, and the weld first leaks. The reason is that the copper temperature is too high, exceeding the melting point of copper at 1089 ° C.
  • Quenching sensor failure case and life improvement approach-3
    4.When a silicon steel sheet is used as a magnet for magnetism between the laminations, the end magnets are easily overheated and burnt at the end of the magnetizer because of the three-dimensional field. These silicon steel sheets will generate arcing between the crucible and the crucible. A short circuit bridge is formed, as shown in FIG. Solving the problem of overheating of the end magnet is to thicken the copper baffle next to the silicon steel sheet, so that the heat of the silicon steel s
  • Quenching sensor failure case and life improvement approach-2
    2.Effective circle melting The effective ring melting of the inductor is a common case. The reason is insufficient cooling or sudden interruption. There are many examples:
  • Quenching sensor failure case and life improvement approach-1
    The design and manufacture of quenching sensors have gradually evolved from testing, empirical design, manual bending and welding forming, to the current state of computer simulation, computer aided design (CAD) and computer aided manufacturing (CAM). The body of the inductor has also evolved from a simple-shaped copper tube ring to a complex structure that has been precision machined from a single piece of copper. It has both a heated active ring and a quenched spray section, and even an increa
  • Quenching hardness of steel used for induction quenching
    1. The "super-hard" problem of induction quenching 2. Hardness uniformity of induction quenching
  • The depth of the induction hardening layer-4
    4.Determination of the depth of the hardened layer According to national standard GB 5617-1985, Vickers hardness tester is used to test the depth of the hardened layer, which is called "hardness method". To determine ultimate hardness, ultimate hardness is the function of the lowest straight surface hardness, as shown in equation (4) :