Floating seal material and method for manufacturing the same

Abstract

The present invention provides a floating seal material which contains at least Fe, C, Si, Mn, Cr and Mo, wherein: the content of C is from 2.3% by weight to 3.8% by weight; the content of Si is from 0.7% by weight to 2.5% by weight; the content of Mn is from 0.3% by weight to 1.3% by weight; the content of Cr is from 3% by weight to 13% by weight; the content of Mo is from 1.8% by weight to 15% by weight; and the balance is made up of Fe and unavoidable impurities.

Claims

1. It contains at least Fe, C, X, Mn, Cr, and Mo, The carbon content is 2.3% to 3.8% by weight, the silicon content is 0.7% to 2.5% by weight, the manganese content is 0.3% to 1.3% by weight, the chromium content is 3% to 13% by weight, the molybdenum content is 1.8% to 15% by weight, and the remainder is Fe and unavoidable impurities. Floating sealant.

2. M is composed of at least a portion of Fe, Si, Mn, Cr, or Mo and at least a portion of C. ３ C and M ７ C ３ The floating seal material according to claim 1, comprising at least one carbide represented by (M is Fe, Si, Mn, Cr, or Mo).

3. M is composed of at least a portion of Fe, Si, Cr, or Mo and at least a portion of C. ６ A floating seal material according to claim 1 or 2, comprising a carbide represented by C (where M is Fe, Si, Cr, or Mo).

4. Having a phase separation structure in which at least one dispersed phase is contained in the matrix phase, As the dispersed phase, ３ C, M ７ C ３ , and M ６ The floating seal material according to claim 2 or 3, comprising a granular phase consisting of at least one carbide represented by C, with an average particle size of 1 μm or less.

5. A floating seal device comprising a floating seal material according to any one of claims 1 to 4.

6. It contains at least Fe, C, X, Mn, Cr, and Mo, A molten metal preparation step is performed to prepare a molten metal in which the C content is 2.3% by weight or more and 3.8% by weight or less, the Si content is 0.7% by weight or more and 2.5% by weight or less, the Mn content is 0.3% by weight or more and 1.3% by weight or less, the Cr content is 3% by weight or more and 13% by weight or less, the Mo content is 1.8% by weight or more and 15% by weight or less, and the remainder is Fe and unavoidable impurities. The casting process involves pouring the molten metal into a mold. A method for manufacturing a floating seal material containing [a specific substance].

7. The method for manufacturing a floating seal material according to claim 6, wherein in the casting step, the molten metal is cast into the mold by a centrifugal casting method.

8. A method for manufacturing a floating seal material according to claim 6 or 7, further comprising the step of cooling the mold after the casting step to cool and solidify the molten metal.

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