Bonding method of dual phase stainless steel
DCFirst Claim
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1. A method of bonding ferritic and austenitic dual stainless steels, comprising the steps of:
- putting an insert material comprising a Ni base alloy having a melting point below 1290°
C. between the bonding cross section faces of two dual phase ferritic-austenitic stainless steelsapplying pressure force in the range of 3 MPa to 5 MPa to a bonding area; and
heating the bonding area at a temperature in the range of 1290°
C. to a melting point of the dual phase ferritic and austenitic stainless steel in which the temperature is kept in said range for a time of 30 seconds to 180 seconds.
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Abstract
In a method of bonding ferric and austenitic dual stainless steels, an insert material made of a Ni base alloy having a melting point below 1290° C. is put between the bonding cross section faces of mother material steels comprising a dual phase stainless steel. A pressure force in the range of 3 MPa to 5 MPa is applied to a bonding area. The bonding area is heated at a temperature in the range of 1290° C. to a melting point of the mother material steel. The temperature is kept for in the range of 30 second to 180 second.
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12 Claims
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1. A method of bonding ferritic and austenitic dual stainless steels, comprising the steps of:
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putting an insert material comprising a Ni base alloy having a melting point below 1290°
C. between the bonding cross section faces of two dual phase ferritic-austenitic stainless steelsapplying pressure force in the range of 3 MPa to 5 MPa to a bonding area; and heating the bonding area at a temperature in the range of 1290°
C. to a melting point of the dual phase ferritic and austenitic stainless steel in which the temperature is kept in said range for a time of 30 seconds to 180 seconds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification