- A method for brazing WC-Co and tool steel

摘要

The present invention relates to a bonding method of the cemented carbide and tool steel, between the polished to a desired roughness tool steel with hard-metal foil (foil) phase by inserting the Ni-based metal joining (brazing) while appropriately the size of the solidification range and the reaction layer to provide a bonding method of bonding strength and an excellent hard-metal tool steel by adjusting it for that purpose.; Therefore, the present invention includes the steps of washing with a method for joining (brazing) of WC-Co-based cemented carbide and tool steel, after grinding the one side surface of the cemented carbide and tool steel ultrasound; The step of fixing with a jig the said cleaning tool steel and cemented carbide so as to face that the polished surface, and by inserting the Ni-based metal on the foil (foil) therebetween to form a laminated member; Step of the laminated material at the heating temperature of the Ni-based 20 ~ 100 ℃ than the melting point of the inserted metal nopneun temperature bonding in a vacuum; And a furnace cooling step of said bonded laminated material to room temperature; and in that a base that relates to the bonding method of the chogyeonghapgeumwa tool steel characterized by the.