In Services


Since day one, TAG’s core business has always been heat treatments.

A process that has rather undefined contours for most people, but in actual fact it is present in our everyday life more than we could ever imagine.

So what is a heat treatment? And if it TAG’s such a simple process … why just a few enterprises are able to do it well? What are the unique aspects of TAG’s heat treatments in particular?


In as few words as possible, the processing phases of heat treatment consist of heating a workpiece to a certain temperature, followed by a soaking phase and a more or less rapid cooling phase.

One cannot see any differences between before and after with the naked eye… as the real transformation of the material occurs internally, at a crystalline structure level, which changes according to the characteristics of the process cycle to bestow the workpiece with the required mechanical properties.

To simplify the explanation of this process, the TAG team has filmed an instructional video that demonstrates in immediate terms how the heat treatment process works, with some everyday examples: Heat Treatment Made Easy.

Is it so simple? Actually, there are a multitude of variables that are called into play on a process that is only apparently so linear: the skill and experience of the treatment manager can be seen in how he manages to harmonise all these aspects to accomplish the ideal result.


TAG has always been a front runner in this sector, adopting cutting-edge bespoke solutions to meet the individual needs of its customers.

Its success in this sector obviously depends on the extensive experience gained throughout so many years of hard, enthusiastic and valid work, but also on a constantly updated and reliable fleet of equipment and machinery.

We can also count on many long-term collaborations with the constructors of our plant systems, which allow us to accomplish maximum possible performance: this is a further added value that we are proud to be able to convey.

The plant systems installed at the two operating facilities in Dolzago and Cremella are consistently increasing (we currently have well over 30 units), while the management software is constantly updated accordingly.

In addition to the “standard” tempering and hardening heat treatments, we can offer a much wider range of “special processes” (solubilisation, aging, diffusion coating, etc.); the assortment also includes four ionic nitriding plant systems and three plant systems dedicated to aluminisation.

Next year will also mark the introduction of an additional processing phase of hot isostatic pressing (commonly referred to as HIP), which involves the use of an inert gas, generally argon, which is heated to very high temperatures and pressures to eliminate the microporosity inside the material hence enhancing its resilience and workability.

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