Talk about the structure of the inductor used for quenching with medium frequency induction heating machine

The characteristics of the medium frequency induction heating machine sensor are that the conductive part of the effective circle is thicker and the structure is relatively heavy. It is generally made of multiple machined parts that are welded together. Some sensors are also equipped with workpiece positioning devices. At this time, it is not necessary to rely on the rotating tip of the quenching machine is loaded with the workpiece.

Let’s take a look at the semi-ring crankshaft sensor first

The semi-annular crankshaft inductor of the medium frequency induction heating machine is composed of an effective ring, a spacer block, a side plate, an injector, an interval positioning block and other parts. Its core is the effective ring, which consists of circumferential branches and axial branches. composed of. The effective ring determines the wrap angle and cross-sectional structure of the circumferential conduit according to the heating requirements of the journal. The function of the spacer positioning block is to ensure a certain gap between the coil and the journal. Clearance, the liquid sprayer can meet the journal can be uniformly quenched. For the semi-automatic crankshaft quenching machine, the sensor is quickly mixed due to the requirement. The sensor is equipped with a handle. Quick changeover is possible when one journal size is hardened on all four crankshafts.

Let’s take a look at the longitudinally heated shaft-type semi-ring sensor

Medium frequency induction heating machine longitudinally attached shaft semi-ring sensor (also known as a shot method sensor: Single Shot Hardenin). It is an inductor used for one-time heating and quenching of straight shafts, stepped shafts, half shafts, etc. that has been widely used since the late 1960s. It has the following characteristics:

1. The effective ring made of rectangular tube is straddling the axis in parallel, and the workpiece must be rotated during heating to obtain uniform heating of the entire surface.

2. The fundamental difference from the focused induction coil is that the eddy current it induces flows along the axial direction on the workpiece.

3. The distribution of magnetic lines of force generated by the effective coil is controlled by the magnetic conductor straddling it. By adjusting the distribution of the magnetic conductor segments, the temperature of the heated section can be adjusted.

4. The semi-ring sensor is an open structure, and the workpiece can leave the sensor and enter the liquid sprayer or water after heating.

5. The open structure facilitates the transportation of workpieces in a row during heating and cooling operations, thus simplifying the automation process of loading and unloading.

6. When heating along the axial direction, the current frequency can be slightly higher than that of general heating, because relatively speaking, its heating time is longer than that of the focusing inductor.

If you have any questions about the medium frequency induction heating machine or the sensor, please contact us freely.