# US 10,766,100 B2 · Hybrid electroslag cladding

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- Number: US 10,766,100 B2
- Document ID: US10766100B2
- Status: Granted
- Kind: B2
- Application number: 15/737,689
- Filed: 2015-11-26
- Published: 2018-06-28
- Granted: 2020-09-08
- Earliest claimed: 2015-06-19
- Assignees: Lincoln Global, Inc.
- Applicants: Lincoln Global, Inc.
- Inventors: Amin Nateghi; Roland Pollmann; Frank Bolte; Christopher Thume; Mark Golding; Zhuyao Zhang; Pallav Chattopadhyay
- Web page: https://patentgrep.com/patent/US10766100B2

## CPC

- B23K 25/005: {Welding for purposes other than joining, e.g. build-up welding}
- B23K 35/0255: {for use in welding (B23K35/0205 takes precedence)}
- B23K 35/0261: {Rods, electrodes or wires}
- B23K 35/0266: {flux-cored}
- B23K 35/30: with the principal constituent melting at less than 1550°C
- B23K 35/3033: {Ni as the principal constituent}
- B23K 35/3066: {with Ni as next major constituent}
- B23K 35/308: {with Cr as next major constituent}
- B23K 35/3086: {containing Ni or Mn}
- C22C 19/03: based on nickel
- C22C 19/05: with chromium
- C22C 19/055: {with the maximum Cr content being at least 20% but less than 30%}
- C22C 19/058: {without Mo and W}
- C22C 38/002: {containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60}
- C22C 38/02: containing silicon
- C22C 38/04: containing manganese
- C22C 38/06: containing aluminium
- C22C 38/40: with nickel
- C22C 38/42: with copper
- C22C 38/44: with molybdenum or tungsten
- C22C 38/48: with niobium or tantalum
- C22C 38/50: with titanium or zirconium
- C22C 38/58: with more than 1.5% by weight of manganese
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- C22C: ALLOYS (treatment of alloys C21D, C22F)

## Abstract

A hybrid electroslag cladding method includes the steps of: providing a workpiece (6) to be cladded; guiding a strip electrode (4) onto the surface of the workpiece (6); cladding the strip electrode (4) onto the surface of the workpiece (6) using electroslag cladding; guiding a metal cored hybrid electroslag cladding wire (7) into the weld puddle (9) of the strip electrode (4) for controlling the chemical composition of the cladding.

## Claims

### Claim 1

A hybrid electroslag cladding method, the method comprising:
providing a workpiece to be cladded;
guiding a strip electrode onto a surface of the workpiece;
cladding the strip electrode onto the surface of the workpiece using electroslag cladding; and
guiding a metal cored hybrid electroslag cladding wire into a weld puddle of the strip electrode for controlling a chemical composition of the cladding, and
for a second workpiece requiring stainless steel cladding with a different cladding composition than the workpiece, selecting a second metal cored hybrid electroslag cladding wire for controlling a chemical composition of the cladding of the second workpiece,
wherein the chemical composition of the metal cored hybrid electroslag cladding wire differs from the chemical composition of the second metal cored hybrid electroslag cladding wire.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
using a flux of a given composition for the workpiece and the second workpiece.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
controlling at least one of a stickout length of the metal cored hybrid electroslag cladding wire, a feed speed of the strip electrode, and a feed speed of the metal cored hybrid electroslag cladding wire.

### Claim 4 (depends on 3)

The method of claim 3, wherein the feed speed of the metal cored hybrid electroslag cladding wire is changed if a change of the feed speed of the strip electrode is detected.

### Claim 5 (depends on 1)

The method of claim 1, wherein the metal cored hybrid electroslag cladding wire is heated.

### Claim 6 (depends on 1)

The method of claim 1, wherein the metal cored hybrid electroslag cladding wire includes a stainless steel base sheath and a metal powder flux within the stainless steel base sheath, and
wherein the wire has a composition that is defined by WIRE 308L, WIRE 347, WIRE 316L, or WIRE 317L.

### Claim 7 (depends on 6)

The method of claim 6, wherein for the metal cored hybrid electroslag cladding wire an upper limit of at least one element in the composition is one of 5%, 10% or 20% lower than that defined in the respective WIRE 308L, WIRE 347, WIRE 316L, or WIRE 317L.

### Claim 8 (depends on 6)

The method of claim 6, wherein for the metal cored hybrid electroslag cladding wire a lower limit of at least one element in the composition is one of 5%, 10% or 20% higher than that defined in the respective WIRE 308L, WIRE 347, WIRE 316L, or WIRE 317L.

### Claim 9

A hybrid electroslag cladding system, comprising:
a cladding head for guiding a strip electrode onto a surface of a workpiece to be cladded with the strip electrode;
a cladding power supply for providing power to the strip electrode for arcless deposition onto the surface of the workpiece; and
a flux feeder for at least one of depositing flux on the strip electrode and depositing flux adjacent the strip electrode,
wherein the cladding head is configured to guide a metal cored hybrid electroslag cladding wire into a weld puddle of the strip electrode,
wherein the metal cored hybrid electroslag cladding wire has a composition that is defined by one of WIRE 625, WIRE 600, WIRE 825, WIRE 400, WIRE 308L, WIRE 347, WIRE 316L, or WIRE 317L, and
wherein the hybrid electroslag cladding system further comprises a steering magnet disposed adjacent the strip electrode for steering the weld puddle magnetically.

### Claim 10 (depends on 9)

The system of claim 9, further comprising:
a hot wire power supply for heating the metal cored hybrid electroslag cladding wire; and
a controller for controlling at least one of a temperature of the metal cored hybrid electroslag cladding wire according to a desired deposition rate, a stickout length of at least one of the metal cored hybrid electroslag cladding wire the and the strip electrode, a feed speed of the strip electrode, and a feed speed of the metal cored hybrid electroslag cladding wire.

### Claim 11 (depends on 9)

The system of claim 9, wherein an angle between at least one of the strip electrode and the metal cored hybrid electroslag cladding wire and the surface of the workpiece is adjustable.

### Claim 12 (depends on 9)

The system of claim 9, wherein the cladding head guides at least two metal cored hybrid electroslag cladding wires disposed adjacent to each other into the weld puddle.
