{"id":19655,"date":"2018-07-11T10:00:08","date_gmt":"2018-07-11T08:00:08","guid":{"rendered":"https:\/\/www.mecolpress.com\/credevo-fosse-diamante-e-invece-e-grafite\/"},"modified":"2018-09-10T10:07:48","modified_gmt":"2018-09-10T08:07:48","slug":"i-thought-it-was-diamond-but-isgraphite","status":"publish","type":"post","link":"https:\/\/www.mecolpress.com\/en\/i-thought-it-was-diamond-but-isgraphite\/","title":{"rendered":"I THOUGHT IT WAS DIAMOND BUT IS\u2026GRAPHITE!"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]The most curious thing to know regarding the graphite \u2013 one of the allotropy forms of carbon \u2013 is that it can be considered from the chemical point of view a diamond twin. But it is completely different for the physical features: first of all, it\u2019s black! And, in addition, it has its own, very precious, application in the protection covering of metallic areas exposed to corrosion. Keep reading if you want to discover more about graphite and about graphitizing!<\/p>\n

Graphite, a precious mineral for industry\u00a0 <\/strong><\/h2>\n

To the touch it is unctuous and slippery, graphite has a metallic shining and a density between 2,09 and 2,2. Extremely soft (with a variable hardness between 1 and 2) it\u2019s very easy to scratch. It solidifies in the hexagonal system, not in the shape of completely developed crystals, but in the shape of scales or irregular masses. It is the only not metal that is a good electricity conductor, on the contrary it conducts heat in a bad way.<\/p>\n

It exists in nature as a mineral that includes impurities, it is amply supplied all over the world; important deposits are located in England, Siberia, Madagascar, Mexico, Sri Lanka, Canada and in many American places.<\/p>\n

It is also artificially produced, warming up for 11-13 weeks at a temperature of 950 degrees Celsius a blend of petrol and carbon derivatives and then transferring the product of the cooking in electric furnace, where for 4-5 weeks it remains at the temperature of 2.800 degrees Celsius. Most of the process of graphitization (that is a warming at the temperature of 2500-3000 degrees Celsius) it happens not only for the temperature but also for a refinement caused by a reduction of metals and vaporization of metal oxides present in carbon.<\/p>\n

What is graphite for?\u00a0 <\/strong><\/h2>\n

Graphite is used for electrodes in the electrochemical industry, for electrical furnace or crucibles addressed to very high temperature, in industrial paints.<\/p>\n

Moreover, it is used as lubricant (sometimes mixed with grease, oils or water) in a semi-permanent treatment that is called graphitizing and it is used in order to protect the metallic surfaces.<\/p>\n

The graphitizing process \u00a0\u00a0<\/strong><\/h2>\n

Graphite is a lubricant element and it can be available as powder or as paste. It guarantees the homogeneity of the superficial color of the billet. In addition, it produces a positive effect on gas consumption for the heating of brass or aluminum billets because, by making them black, it facilitates the heat absorption.<\/p>\n

As it is lubricant, regarding the mold it contrasts efficiently:<\/p>\n