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Why Non-magnetic Tungsten Carbide Balls Are Non-magnetic?
Why non-magnetic tungsten carbide balls are non-magnetic? Get to know the reason.
Aug 12th,2021
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Why Non-magnetic Tungsten Carbide Balls Are Non-magnetic?
Do you know why non-magnetic tungsten carbide balls are non-magnetic?
Well the reason why the WC-Ni system is non-magnetic at room temperature is that in the low-carbon WC-Ni alloy, the Curie point (354℃) of the binder phase Ni-W alloy is higher than that of the WC-Fe alloy ( 1120℃), the Curie point (770℃) of WC-Co alloy is low, and the solubility of tungsten in the nickel binder phase increases with the decrease of carbon content. When the content of tungsten in nickel is greater than 17%, WC -The Curie point of Ni alloy drops below room temperature. When nickel alloy elements contain chromium more than 7.5%, molybdenum more than 8%, nickel more than 12%, and tantalum more than 22%, the binary nickel alloys composed of them are The Curie point has also fallen below room temperature. To prepare a non-magnetic high-strength WC-Ni alloy, the carbon content needs to be reduced to no free carbon, and the strength of the alloy reaches its maximum value.
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