Material for joining and product produced therewith

Patent metadata

Field	Value
Publication number	US-9702641-B2
Application number	US-201615147940-A
Country	US
Kind code	B2
Filing date	May 6, 2016
Priority date	Nov 10, 2000
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

An iron-based braze filler alloy consists of from 9 wt % to 30 wt % Cr; from 5 wt % to 25 wt % Ni; from 0.5 wt % to 9 wt % Mo; from 1 wt % to 5 wt % Mn; from 0 wt % to 1 wt % N; from 6 wt % to 20 wt % Si; from 0.1 wt % to 15 wt % P; and is balanced with Fe.

First claim

What is claimed is:

1. An iron-based braze filler alloy consisting of:
from 9 wt % to 30 wt % Cr;
from 5 wt % to 25 wt % Ni;
from 0.5 wt % to 9 wt % Mo;
from 1 wt % to 5 wt % Mn;
from 0 wt % to 1 wt % N;
from 6 wt % to 20 wt % Si;
from 0.1 wt % to 15 wt % P; and
wherein the iron-based braze filler alloy is balanced with Fe.

2. The iron-based braze filler alloy of claim 1 , wherein the P is within a range of 0.5 to 15 wt % P.

3. An iron-based braze filler alloy consisting of:
from 9 wt % to 30 wt % Cr;
from 5 wt % to 25 wt % Ni;
from 0.5 wt % to 9 wt % Mo;
from 1 wt % to 5 wt % Mn;
from 0 wt % to 1 wt % N;
from 6 wt % to 20 wt % Si;
from 0.1 wt % to 15 wt % P; and
at least one micro-alloying element, wherein the at least one micro-alloying element is at least one of V, Ti, W, Nb, and Ta, and the micro-alloying element is present in the iron-based braze filler alloy at a wt % of less than 1.5;
wherein the iron-based braze filler alloy is balanced with Fe.

4. The iron-based braze filler alloy of claim 1 , wherein the iron-based braze filler alloy is produced by one of gas atomization, water atomizing and melt spinning.

5. The iron-based braze filler alloy of claim 1 , wherein the iron-based braze filler alloy is produced by at least one of crushing an ingot and milling an ingot.

6. A plate heat exchanger product comprising components made of an iron based plate material and brazed together with an iron-based braze filler alloy, wherein the components are heat exchanger plates, the product being a plate heat exchanger configured for at least two heat exchanging media and comprising at least one plate package including at least two of the heat exchanger plates, wherein the heat exchanger plates are made of the iron based plate material which is 316 stainless steel comprising maximum 2.0 wt % Mn, 16.5-18 wt % Cr, 10.0-13.0 wt. % Ni, 2.0-2.5 wt % Mo and balance Fe, brazed together with the iron-based braze filler alloy at the brazed joints, the iron-based braze filler alloy consisting of:
from 9 wt % to 30 wt % Cr;
from 5 wt % to 25 wt % Ni;
from 0.5 wt % to 9 wt % Mo;
from 1 wt % to 5 wt % Mn;
from 0 wt % to 1 wt % N;
from 6 wt % to 20 wt % Si;
from 0.1 wt % to 15 wt % P; and
wherein the iron-based braze filler alloy is balanced with Fe.

7. The iron-based braze filler alloy of claim 6 , wherein the P is within a range of 0.5 to 15 wt % P.

8. A plate heat exchanger product comprising components made of an iron based plate material and brazed together with an iron-based braze filler alloy, wherein the components are heat exchanger plates, the product being a plate heat exchanger configured for at least two heat exchanging media and comprising at least one plate package including at least two of the heat exchanger plates, wherein the heat exchanger plates are made of the iron based plate material which is 316 stainless steel comprising maximum 2.0 wt % Mn, 16.5-18 wt % Cr, 10.0-13.0 wt. % Ni, 2.0-2.5 wt % Mo and balance Fe, brazed together with the iron-based braze filler alloy at the brazed joints, the iron-based braze filler alloy consisting of:
from 9 wt % to 30 wt % Cr;
from 5 wt % to 25 wt % Ni;
from 0.5 wt % to 9 wt % Mo;
from 1 wt % to 5 wt % Mn;
from 0 wt % to 1 wt % N;
from 6 wt % to 20 wt % Si;
from 0.1 wt % to 15 wt % P; and
at least one micro-alloying element, wherein the at least one micro-alloying element is at least one of V, Ti, W, Nb, and Ta, and the micro-alloying element is present in the iron-based braze filler alloy at a wt % of less than 1.5;
wherein the iron-based braze filler alloy is balanced with Fe.

9. The iron-based braze filler alloy of claim 6 , wherein the iron-based braze filler alloy is produced by one of gas atomization, water atomizing and melt spinning.

10. The iron-based braze filler alloy of claim 6 , wherein the iron-based braze filler alloy is produced by at least one of crushing an ingot and milling an ingot.

Assignees

• Alfa Laval Corp Ab

Inventors

• Sjodin Per Erik

Classifications

• B23K35/30 Primary

  with the principal constituent melting at less than 1550°C · CPC title

• B23K35/3066

  with Ni as next major constituent · CPC title

• C22C1/02

  by melting {(C22C1/1036 takes precedence)} · CPC title

• C22C38/54

  with boron · CPC title

• B23K2201/14

  Operations & Transport · mapped topic