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Induction Heating Since 2000

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A set of pictures to understand the metal surface treatment process

Surface hardening

  Surface quenching refers to the heat treatment method of strengthening the surface of parts by using rapid heating after austenitizing the surface without changing the chemical composition and core structure of steel.

  Surface heat treatment of the main methods are flame quenching and induction heating heat treatment, commonly used heat sources such as oxygen-acetylene or oxygen propane flame, induction current, laser, and electron beam.

Schematic diagram of surface quenching by induction heating The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process
Schematic diagram of surface quenching by flame heating The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process

Induction heating

  Using alternating current to induce huge eddy current on the workpiece surface, so that the workpiece surface rapidly heating method.

Induction heating is divided into:

1. High-frequency induction heating, frequency 250-300khz, depth of hardened layer 0.5-2mm;

2. Medium frequency induction heating, frequency 2500-8000Hz, hardened layer depth 2-10mm;

3. Power frequency induction heating, frequency 50Hz, hardened layer depth 10-15mm.

Schematic diagram of induction heating heat treatment The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process

Flame heating

  The method of heating workpiece surface directly with acetylene flame. Low cost, but the quality is not easy to control.

Schematic diagram of surface quenching by flame heating The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process

Laser heating

  The method of heating workpiece surface with high energy density laser. High efficiency and good quality.

Diagram of laser surface strengthening process The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process

  Laser surface strengthening is mainly used for local strengthening parts, such as punching die, crankshaft, cam, camshaft, spline shaft, precision instrument guide rail, HSS cutting tools, gears, and internal combustion engine cylinder liner, etc.

Schematic diagram of laser surface alloying process The Leading Induction Heating Machine Manufacturer A set of pictures to understand the metal surface treatment process

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