Chrome-Moly Steels Conference
| print this page | |
Welding the Chrome-Moly Steels |
|
|
As an added benefit, AWS Conference
attendees are awarded 1
PDH (Professional Development Hour) for each hour of conference
attendance. These PDH’s can be applied toward AWS recertifications and
renewals.
|
|
November
17, 2009 — Chicago, Illinois
Facility: McCormick Place, Fabtech Int'l and AWS Welding Show
Chairs: Robert R. Irving and Russel Fuchs
The
welding of chrome-moly steel goes way back to the days when tubing was
oxyacetylene welded to make up the fuselages of the early pre-aluminum
airplanes. It all required outstanding precision on the part of the
welder. Believe it or not, even though the methods have changed, the
welding of 4130 steel still requires utmost precision on the part of
the welder. The welding of chrome-moly steels requires great skills
from all parties involved. Not just the welding, either.
Heat treatment and nondestructive testing are part and parcel of a
successful weld. The 2 1/4Cr-1Mo steels are very popular materials for
boilers and pressure vessels where the ASME Code is used to call the
shots. More recently, the modified 9Cr-1Mo steel, which was originally
developed as the base metal for the Fast Breeder Reactor, is now widely
specified through the electric utilities and is moving into the oil and
gas industry. To weld any of these steels for the first time, the
engineer and the welder actually have to go back to school and start
all over again.
The conventional welding processes such as manual arc, several of the
semiautomatic, and submerged-arc welding processes are all used
effectively on 4130, 2 1/4Cr-1Mo and modified 9Cr-1Mo steels. Some of
the newer processes like hybrid welding have also become popular.
Proper administration of the preheat and/or postweld heat treat
operations is most critical.
Conference Registration Fees
AWS/FMA/SME/PMA/NAM Member – $345Nonmember – $480
Register online or via mail/fax form here.
- Each nonmember
attendee will receive
a two-year complimentary membership in AWS.
- The registration fee does not include hotel accommodations. Hotel accommodations are subject to hotel regulations and are the responsibility of the attendee.
- You will receive a CD containing copies of all presentations.
- Each participant will also earn 5 Professional Development Hours (PDHs) for attending the conference. These PDH’s can be applied toward AWS recertifications and renewals.
Program Schedule
TUESDAY, NOVEMBER 17, 2009
9:00 - 9:30
Welding of the 1 1/4Cr-1/2Mo Steels
Ben Pletcher, Welding Engineer/Metallurgist, Chicago Bridge & Iron Co. This paper is co-authored by James Brennan, Senior Welding Engineer.
Many of the high-temperature pressure vessels used in refining operations today depend on the use of chrome-moly steels. The requirements for the material and welding have evolved to included temper embrittlement, low temperature impacts, and low hardness values. The joining of these alloys requires planning, control and execution in all phases of the welding operation. Quality and productivity can be obtained only though the combined efforts of the engineer, procurement organization and the shop or field construction forces.
9:35 -10:05
Induction Heating as a Tool for Minimizing the Risk of Weld Cracking
Steve Latvis, Regional Manager, North & South America, Global Pipe Systems, Miller Electric Manufacturing Co.
Relatively new induction heating equipment is finding use in various industries for preheat and stress relief. The technology appears to be more cost-effective than either resistance heating or flame heating. Air-cooled equipment is available for temperatures up to 400 deg F and liquid-cooled equipment for work up to 1,450 deg F.
10:10 -10:40
Pipe Welding for the Offshore Petroleum Industry
Embry Murphy, Welding Engineer, FGA Consulting Engineers Ltd.
Chrome-moly steel represented a considerable amount of pipe to be welded and inspected in the expanding oil production industry off the coast of Newfoundland, in the Jeanne d’Arc Basin. Most of the work was done using Gas Tungsten Arc Welding (GTAW) and Shielded Metal Arc Welding (SMAW) processes. The welding was performed in local area fabrication shops and on the drilling platforms.
10:45 - 11:15
Welding 4130 Cr-Mo Steel in the Motorsports World
Wyatt Swaim, Chief Executive Officer, WJS Consulting Inc.
This talk will discuss the fabrication and welding pitfalls of 4130 Cr-Mo when used for motorsports applications. Top fuel dragsters are now exceeding 7,500 horsepower, and special welding techniques and filler materials will be discussed to help avoid premature weld failures. This interactive talk will highlight the 10 most-asked questions for 4130 Cr-Mo and will assist anyone involved with racing structures and/or lightweight aircraft, including experimentals.
11:20 - 11:50
The Welding of 2 1/4 Cr–1 Mo–V: A Challenge
Russel Fuchs, Senior Technical Manager, Bohler Welding Group USA, Inc. Co-authors: Volker Gross and Martin Schmitz-Niederau.
The use of 2 1/4 Cr-1 Mo-V steels (Grade 22V) has become more popular for the fabrication of heavy-wall pressure vessels due to its higher strength and creep resistance as compared to the conventional 2 1/4 Cr–1 Mo steel. However, it has not been without its share of challenges when it comes to welding. High toughness of the weld deposit is desirable both in the as-welded condition and after PWHT; as-welded in order to handle the component during fabrication without fear of cracking and after PWHT to insure in-service requirements are satisfied with respect to startup and shutdown. Furthermore, issues with reheat cracking have been experienced, especially in the highly restrained weldments using the SAW process. Filler metals have been developed to meet these challenges and are being successfully applied. A novel test method has also been developed as a quality control tool to insure weld deposits free of reheat cracking.
High-Temperature Mechanical Performance of 2 1/4Cr-1Mo Steel Weldments
Robert W. Warke - Associate Professor of Welding and Materials Joining, LeTourneau University
Industry experience has demonstrated the relative vulnerability of welded joints to localized creep damage in high-temperature service. An extensive database of weldment test data was assembled and evaluated for a variety of welding processes, joint geometries, heat treatment conditions and test configurations. Performance trends were assessed in light of base metal data and current design rules for pressure vessels and piping.
1:35 - 2:05
Welding and PWHT of P91 Steel
William F. Newell, President, Euroweld Ltd.
Use of P(T)91 components is experiencing worldwide usage. There are various sources for base materials, welding consumables and fabrication or components. The art is such that few welding problems are encountered. However, premature failures are being encountered due to design, inadequate attention to following procedures or improper post-weld heat treatment. Heat treatment of both component manufacture and completed welds appears to be the number-one cause of premature failure. The factors that influence these failures and ways to avoid them will be presented.
2:10 - 2:40
Time of Flight Diffraction Testing
Ronald W. Kruzic, Corporate QA/NDE Consultant, Chicago Bridge & Iron Company
ASME Code Case 2235 is for the use of an ultrasonic examination in lieu of a radiographic examination for pressure vessels and boilers. This talk is concerning the use of this Code Case utilizing the Time of Flight Diffraction (TOFD) technique for the examination of coke drums fabricated from Cr-Mo alloys which have been clad with Type 410s stainless steel.
2:45 - 3:15
A New Advancement in Chrome-Moly Flux Cored Wires
Keith Packard, Welding Engineer, Hobart Brothers Co. Co-author is Joe Bundy, Tubular Wire R&D Engineering Manager.
It has been a difficult challenge to meet low-temperature impact toughness properties with gas-shielded flux cored filler metals in chrome-moly applications. This challenge has led to a new patented technology in flux cored electrode design. This technology can provide impact toughness of 50-100 ft/lbs at -40 deg F. These new filler metals can now provide toughness that far exceeds even shielded metal arc welding or submerged arc welding.
Welding of the 1 1/4Cr-1/2Mo Steels
Ben Pletcher, Welding Engineer/Metallurgist, Chicago Bridge & Iron Co. This paper is co-authored by James Brennan, Senior Welding Engineer.
Many of the high-temperature pressure vessels used in refining operations today depend on the use of chrome-moly steels. The requirements for the material and welding have evolved to included temper embrittlement, low temperature impacts, and low hardness values. The joining of these alloys requires planning, control and execution in all phases of the welding operation. Quality and productivity can be obtained only though the combined efforts of the engineer, procurement organization and the shop or field construction forces.
9:35 -10:05
Induction Heating as a Tool for Minimizing the Risk of Weld Cracking
Steve Latvis, Regional Manager, North & South America, Global Pipe Systems, Miller Electric Manufacturing Co.
Relatively new induction heating equipment is finding use in various industries for preheat and stress relief. The technology appears to be more cost-effective than either resistance heating or flame heating. Air-cooled equipment is available for temperatures up to 400 deg F and liquid-cooled equipment for work up to 1,450 deg F.
10:10 -10:40
Pipe Welding for the Offshore Petroleum Industry
Embry Murphy, Welding Engineer, FGA Consulting Engineers Ltd.
Chrome-moly steel represented a considerable amount of pipe to be welded and inspected in the expanding oil production industry off the coast of Newfoundland, in the Jeanne d’Arc Basin. Most of the work was done using Gas Tungsten Arc Welding (GTAW) and Shielded Metal Arc Welding (SMAW) processes. The welding was performed in local area fabrication shops and on the drilling platforms.
10:45 - 11:15
Welding 4130 Cr-Mo Steel in the Motorsports World
Wyatt Swaim, Chief Executive Officer, WJS Consulting Inc.
This talk will discuss the fabrication and welding pitfalls of 4130 Cr-Mo when used for motorsports applications. Top fuel dragsters are now exceeding 7,500 horsepower, and special welding techniques and filler materials will be discussed to help avoid premature weld failures. This interactive talk will highlight the 10 most-asked questions for 4130 Cr-Mo and will assist anyone involved with racing structures and/or lightweight aircraft, including experimentals.
11:20 - 11:50
The Welding of 2 1/4 Cr–1 Mo–V: A Challenge
Russel Fuchs, Senior Technical Manager, Bohler Welding Group USA, Inc. Co-authors: Volker Gross and Martin Schmitz-Niederau.
The use of 2 1/4 Cr-1 Mo-V steels (Grade 22V) has become more popular for the fabrication of heavy-wall pressure vessels due to its higher strength and creep resistance as compared to the conventional 2 1/4 Cr–1 Mo steel. However, it has not been without its share of challenges when it comes to welding. High toughness of the weld deposit is desirable both in the as-welded condition and after PWHT; as-welded in order to handle the component during fabrication without fear of cracking and after PWHT to insure in-service requirements are satisfied with respect to startup and shutdown. Furthermore, issues with reheat cracking have been experienced, especially in the highly restrained weldments using the SAW process. Filler metals have been developed to meet these challenges and are being successfully applied. A novel test method has also been developed as a quality control tool to insure weld deposits free of reheat cracking.
11:55-1:00
PM Break for lunch
High-Temperature Mechanical Performance of 2 1/4Cr-1Mo Steel Weldments
Robert W. Warke - Associate Professor of Welding and Materials Joining, LeTourneau University
Industry experience has demonstrated the relative vulnerability of welded joints to localized creep damage in high-temperature service. An extensive database of weldment test data was assembled and evaluated for a variety of welding processes, joint geometries, heat treatment conditions and test configurations. Performance trends were assessed in light of base metal data and current design rules for pressure vessels and piping.
1:35 - 2:05
Welding and PWHT of P91 Steel
William F. Newell, President, Euroweld Ltd.
Use of P(T)91 components is experiencing worldwide usage. There are various sources for base materials, welding consumables and fabrication or components. The art is such that few welding problems are encountered. However, premature failures are being encountered due to design, inadequate attention to following procedures or improper post-weld heat treatment. Heat treatment of both component manufacture and completed welds appears to be the number-one cause of premature failure. The factors that influence these failures and ways to avoid them will be presented.
2:10 - 2:40
Time of Flight Diffraction Testing
Ronald W. Kruzic, Corporate QA/NDE Consultant, Chicago Bridge & Iron Company
ASME Code Case 2235 is for the use of an ultrasonic examination in lieu of a radiographic examination for pressure vessels and boilers. This talk is concerning the use of this Code Case utilizing the Time of Flight Diffraction (TOFD) technique for the examination of coke drums fabricated from Cr-Mo alloys which have been clad with Type 410s stainless steel.
2:45 - 3:15
A New Advancement in Chrome-Moly Flux Cored Wires
Keith Packard, Welding Engineer, Hobart Brothers Co. Co-author is Joe Bundy, Tubular Wire R&D Engineering Manager.
It has been a difficult challenge to meet low-temperature impact toughness properties with gas-shielded flux cored filler metals in chrome-moly applications. This challenge has led to a new patented technology in flux cored electrode design. This technology can provide impact toughness of 50-100 ft/lbs at -40 deg F. These new filler metals can now provide toughness that far exceeds even shielded metal arc welding or submerged arc welding.
ADJOURNMENT
Questions, to register or need additional conference information? Call
(800) 443-9353 x 455 (U.S.) or
(305) 443-9353 x 455 (Outside the U.S.)
Register online or via mail/fax form here.
(800) 443-9353 x 455 (U.S.) or
(305) 443-9353 x 455 (Outside the U.S.)
Register online or via mail/fax form here.