METHOD FOR FORMING NON-MAGNETIC REGION OF STEEL MATERIAL, AND STEEL MATERIAL HAVING NON-MAGNETIC REGION FORMED THEREON

摘要

PROBLEM TO BE SOLVED: To form a non-magnetic phase having more uniform thickness in a prescribed region of a steel material in a method for forming a non-magnetic region of a steel material. SOLUTION: The method for forming a non-magnetic region of a steel material 10, wherein the non-magnetic region is formed in the prescribed region of the steel material 10, comprises the following steps: an alloy material placing step (S10) where an alloy material 12, containing an austenite phase forming element and capable of being melted and alloyed with Fe at a temperature lower than the melting point of Fe, is placed in the prescribed region of the steel material 10; a pressing plate placing step (S12) where a pressing plate 20 is placed on the alloy material 12; and a melting and alloying step (S14) where the steel material 10 on which the alloy material 12 is placed is heated at a temperature equal to or higher than the melting point of the alloy material 12 and lower than the melting point of Fe and enough to form an austenite phase to melt and alloy the alloy material 12 and Fe. In the melting and alloying step (S14), the resulting molten metal 22 is pressed by the pressing plate 20. COPYRIGHT: (C)2009,JPO&INPIT