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Publicado el 12/16/2016
Categorías: Insider tips

Vacuum furnace hot zone: graphite vs all-metal design [2/2]

Keeping furnace downtime to an absolute minimum also means to be able to make the right choice of hot zone. In fact, the hot zone contributes to the performance of the whole system. It has an impact on the process quality, the temperature uniformity, the heating and cooling rates and the furnace's energy consumption. Therefore, which is the hot zone most economical and best performing based on losses and overall power costs? Graphite-based or all-metal design?

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Publicado el 2/9/2021
Categorías: Aerospace
Etiquetas: Nadcap, Test

AMS 2750F pyrometric requirements: what changes for the equipment of heat treatment furnaces

Revision F of the AMS (Aerospace Material Specifications) 2750 introduces three important changes concerning the equipment of the instrumentation of the heat treatment furnaces.

Which are the changes to the uniformity requirements required by the technical specifications of the process and by the technical specifications of the material?
How are the types of instrumentation of heat treatment plants classified?
And finally, what is the new D+ instrumentation type?

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Publicado el 2/13/2017
Categorías: Insider tips

Roughing pump in high-vacuum furnaces for beginners [2/2]

This is the second part of the article on roughing pump operation in high-vacuum furnaces. It gives an overall picture of the situations due to malfunction of the pumping system. Nonetheless, it provides practical tips on how to deal with the presence of water in the pump, the formation of oil sludge, and the improper use of lubricated roughing pumps.

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Vacuum sintering of stainless steels: how to choose the right sintering atmosphere

Stainless-steel components represent a large part of the market for sintered parts; they can be produced using many technologies and have a wide variety of applications such as automotive, biomedical industries, mechanical and fashion.

In this article we are going to discuss how sintering parameters, and especially the sintering atmosphere, may affect the quality achievable from sintered stainless-steel parts.
We’ll analyse the three gas options, and we’ll see that in some circumstances there are interesting alternatives that can fit your needs. Read on!

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Publicado el 4/12/2021
Categorías: Aerospace
Etiquetas: Nadcap, Calibration, Test

AMS 2750F pyrometric requirements for heat treatments: calibrating process instrumentation

There are many innovations introduced by AMS (Aerospace Material Specifications) 2750 revision F concerning the process instrumentation.

We will analyze the 4 new requirements requested by the legislation and the necessary precautions regarding the instrumentation calibration.

We will conclude by listing in detail all the information to be reported on the instrument calibration certificates.

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