Applications of Induction Heat Treatment
2024-03-21
The most widely used High frequency induction heating machine heat treatment process is quenching, followed by tempering and annealing.
Thermal deposition of new materials and induction surfacing on the surface of the workpiece.
The way of induction hardening process
.one heating method
One-time heating method or simultaneous heating method is the most commonly used method of induction hardening. When this method uses two rectangular tubes to surround the surface of the workpiece for rotation
When heating, it is customarily called the one-shot method. The advantage is that the entire surface area of the workpiece that needs to be heated is completed at one time, so its operation is simple and its productivity is high.
high. It is suitable for workpieces with a small heating area. For workpieces with a particularly large heating area, one-time heating method requires a considerable power supply.
Power, higher investment costs. The most common examples are small and medium modulus gears, CVJ bell housing stems, inner raceways, drag pulleys, track rollers, steel
Leaf spring pins, dials, valve ends, arcs of valve rocker arms, etc.
Scanning Quenching
Scanning quenching of rods, corrugated rolls, rolls, oil pipelines, sucker rods, steel rails, machine tool guide rails, etc.
1）.Segmented one-time heating and quenching method
A typical example is a plurality of cams of a camshaft, one or more cams are heated at a time; after quenching, another part of the cams is heated.
2）.Segmented scanning quenching
A typical example is a valve rocker shaft or a transmission fork shaft. Multiple parts on one shaft are subjected to scanning quenching, and the quenching width can be different.
3）.Heating and quenching in liquid
Heating and quenching in the liquid, that is, the heating surface of the inductor and the workpiece are immersed in the quenching liquid for heating. Power due to heated surface
The density is greater than the cooling rate of the surrounding quenching liquid, so the surface heats up quickly; when the sensor is powered off, due to the heat absorbed by the core of the workpiece and the
After cooling, the surface of the workpiece is quenched. This method is generally suitable for workpieces made of steel that require a smaller critical cooling rate. The workpiece is self-cold extraction
Fire means that the workpiece is placed in the air. After the sensor is powered off, the heat on the surface is absorbed by the core of the workpiece. When the cooling rate of the heated surface is greater than the critical cooling
When the speed is high, hardening is obtained, which is similar to the case of quenching in liquid.