Question about magnetism and electrostatic energy

[Former Oceano]

When a metal exceeds its point of curie, it can magnetize, or demagnetize. When drilling, the metal heats up in contact with the drill bit and the filings may exceed the curie point. It will acquire the orientation of the Earth's magnetic field and once cooled will keep the magnetization.

By the way, it is the magnetization in the layers of matter emitted by the oceanic ridges which made it possible to validate the plate technology. The orientation of the iron oxides and other contents in lavas recorded the orientations and intensities of the paleo magnetic fields.

[Castor]

Thank you, the next time I break through, I will feel less stupid

It makes me think of the soldering iron breakdowns "Magnastat", but she, they re-magnetize afterwards.

I therefore suppose that if we slightly exceed the Curie point there is a return to the initial state, but not if we greatly exceed it. That's right?

[chris051]

Hello everyone, I am a young electrician and have a question: In some cases we use H61 aerial transformers on poles for the distribution of electrical energy: What does the "H61" mean Do you have an idea, an answer, an explanation? Thank you in advance.

[elephant]

Welcome.

apparently, the H61 designates these transformers intended to be perched on poles. Really not enough to prevent sleep. Tapes "H61 transformer" on google.

[Flytox]

Hello ex-oceano

When a metal exceeds its point of curie, it can magnetize, or demagnetize. When drilling, the metal heats up in contact with the drill bit and the filings may exceed the curie point. It will acquire the orientation of the Earth's magnetic field and once cooled will keep the magnetization.

Chai not how you pierce, but you must not take it easy, and your forests should not make old bones ... the Curie point of steel being around 769 ° it makes shavings of color between dark red and dark cherry red.

A lot of scrap has a "strong" residual magnetization. This residual magnetization may be due to the way in which the scrap is carried around to the producer or seller of scrap with very large electromagnets.

The magnetic field becomes more visible when you cut the scrap metal, this creates a North South at each end which sticks the shavings.

A+

[Flytox]

Hello Beaver

I therefore suppose that if we slightly exceed the Curie point there is a return to the initial state, but not if we greatly exceed it. That's right?

At 769 ° steel is no longer magnetic. If you heat more, it does nothing more. On the other hand, by cooling the steel gradually regains its capacity to magnetize (magnetic susceptibility). If you cool without a magnetic field, you don't have residual magnetism. If during the cooling you produce in one way or another a magnetic field near or in contact, you "create" a new magnet more or less powerful according to your magnetic field, your iron etc ....

A+