What Are the Advantages of Induction Annealing Machine？

Induction Forging in a way is a type of annealing where you heat the metal to a particular temperature just before melting it for shaping it into a desired shape, like a screw head or a bolt.  If you don’t anneal the material to the required temperature, the material may crack as you try to form it. You may not see the crack visually, but it will be there on a micro-scalar level.

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Titanium Ti-6AL-4V type material for Forging: If you wish to heat a Titanium slug or a billet at high Temperatures into a desired shape, you may have to blow Argon on the slug during the heating process to minimize the unwanted alpha form – scaling – that can develop across the surface of the material during the heating process. For more details, see Vacuum Annealing below.

Another example of trying to form metal without heating is using a Forming Die to Forge metal. If you try that without heating it to the required temperature first, you will ruin your die.  

One of our customers in the aerospace industry does a lot of annealing/forging in order to build parts for aerospace and for bridges. In their case, the material is titanium and non-magnetic stainless steel, which they first anneal, i.e. soften, and then forge into fasteners in their proprietary shape.

Annealing is also used for softening a portion of a metal, for instance Brass, to soften it for an application such as Crimping.

The SA80 also features an Auto Learn function, which allows the system to remember and recall all of your internal recipes (power/time/temperature) for each part that you anneal.  Together with the Auto Tune feature, the SA80 allows you to easily create and reliably replicate your successful, repeatable and consistent results time after time.

The Auto Learn feature is particularly useful when you want to use the same induction heater to anneal parts of different materials.  We can often provide a one- or two-coil solution, which, combined with Auto Learn, enables our customers to use the same induction generator with different coils.  For fast turnaround on part changes, simply switch coils and recall the correct part settings from the easy-to-use interface.

Some materials don’t react to well to oxygen during the annealing process. The material oxidizes due to its specific properties. For instance, some nickel-based materials, such as 200 series super alloys, have to be heated to target temps of about to degrees F for annealing. When you heat them to this high a temperature, they develop ugly tarnishing and scaling. There are a few ways to handle this: 

1) Blow argon toward the material to purge oxygen before beginning the annealing process. For instance, place your wire material inside a quartz tube, blow argon into the area to purge oxygen, then heat the material to the target temperature;

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2) Anneal the material in a vacuum chamber.  

Materials that would benefit from vacuum annealing include materials such as Stainless Steel 3 or 4L, 316L, 17-4PH types. 

We can design and manufacture a complete manual, semi-automatic, or fully automatic vacuum annealing solution to fit your needs. The solution doesn’t need to be complicated – to keep things simple, in an open-air environment, place your workpiece in a quartz tube, wrap an induction coil around the tube, and you’re ready to start annealing.

The induction annealing machine is designed to anneal austenitic stainless steels and copper by induction, with manual or automatic feeding.

The machine is provided with a cooling chamber which can filled with inert gas for blanketing when bright annealing is requested.

The induction bright annealer allows either to work in two ways:

• Induction spot annealing: this is similar to an electrical spot annealer but the process is faster. The machine can be freely programmed to perform a number of spots
• Full annealing: in this case the induction annealing system anneals the whole length of the element, excluding the cold areas

The main advantages of the induction annealing for heating elements include cost saving as the machine is only turned on when it is used and possibility to anneal the whole element at high speed.

CSM solutions for induction spot annealing are defined by precision in high-temperature heat treatment ensuring high bending efficiency in low-scale production.