Material for joining and product produced therewith

Patent metadata

Field	Value
Publication number	US-9919385-B2
Application number	US-201715472351-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Nov 10, 2000
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

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 1.5 wt % B; and
wherein the iron-based braze filler alloy is balanced with Fe.

2. The iron-based braze filler alloy according to claim 1 , wherein the Mo is within a range of from 0.5 wt % to 7 wt % Mo.

3. The iron-based braze filler alloy according to claim 1 , wherein the Mo is within a range of 1 wt % to 3.5 wt % Mo.

4. The iron-based braze filler alloy according to claim 1 , wherein the Mn is within a range of 1 wt % to 3 wt % Mn.

5. The iron-based braze filler alloy according to claim 1 , wherein the Si is from 10 wt % to 16 wt % Si.

6. The iron-based braze filler alloy according to claim 1 , wherein the Si is from 10 wt % to 12 wt % Si.

7. 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.

8. 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.

9. 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 1.5 wt % B; 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.

10. 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 1.5 wt % B; and
wherein the iron-based braze filler alloy is balanced with Fe.

11. The plate heat exchanger product according to claim 10 , wherein the Mo is within a range of from 0.5 wt % to 7 wt % Mo.

12. The plate heat exchanger product according to claim 10 , wherein the Mo is within a range of 1 wt % to 3.5 wt % Mo.

13. The plate heat exchanger product according to claim 10 , wherein the Mn is within a range of 1 wt % to 3 wt % Mn.

14. The iron-based braze filler alloy according to claim 10 , wherein the Si is from 10 wt % to 16 wt % Si.

15. The iron-based braze filler alloy according to claim 10 , wherein the Si is from 10 wt % to 12 wt % Si.

16. The iron-based braze filler alloy of claim 10 , wherein the iron-based braze filler alloy is produced by one of gas atomization, water atomizing and melt spinning.

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

18. 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 1.5 wt % B; 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.

Assignees

• Alfa Laval Corp Ab

Inventors

• Sjodin Per Erik

Classifications

• B23K2201/14

  Operations & Transport · mapped topic

• F28F21/082

  from steel or ferrous alloys · CPC title

• B23K35/3086

  containing Ni or Mn · CPC title

• C22C38/001

  containing N · CPC title

• C22C38/04

  containing manganese · CPC title