Why is Steel dark Gray after hydroblasting? What does the profile under corrosion look like?
A short monograph. dark grey steel
Tag: hydroblasting
WJTA-IMCA Conference Exhibition 2017-Oct New Orleans
WaterJetting Technology Association –
Industrial Municipal Cleaning Association
WJTA-IMCA Conference & Expo
ERNEST N. MORIAL CONVENTION CENTER
October 25-27, 2017 New Orleans
Eight Reasons Leading Companies are Attending the WJTA-IMCA Conference & Expo
Every year, the most forward-looking and progressive contractors, facility/asset owners, and suppliers of all sizes have high level participants at the WJTA-IMCA. Learn more about the top reasons for attending:
| 1. | Value – Your opportunity to compare the latest offerings from the industry’s leading vendors and service providers in one place |
| 2. | Focus on Safety – Learn about WJTA-IMCA’s safety initiatives first-hand and see safe operating procedures at the live demos. Find out how safety can improve your efficiency and bottom-line! |
| 3. | Networking – Make new contacts and renew old friendships in the exhibit hall and industry appreciation reception |
| 4. | Quality – WJTA-IMCA is known for its first rate education in the areas of waterjet and industrial vacuuming and hydroexcavation. Also included in 2017 are the technical conference sessions featuring the work of top researchers and engineers. |
| 5. | Live Demos – See innovative new equipment demonstrated live outdoors and evaluate controls hands-on in the exhibit hall |
| 6. | New Technology – Explore the newest product releases from the industry’s leading vendors and service providers |
| 7. | Dedicated – WJTA-IMCA’s emphasis on waterjet, cleaning/vacuuming, and related service lines saves you time and money. The right kind of education, safety, and equipment all at one event |
| 8. | Entertainment – New Orleans is a world-class tourist and event destination with legendary dining, shopping and nightlife |
Registration is open now and the group hotel is accepting reservations! Learn more
https://www.wjtaimcaexpo.com/expo/Registration.asp
WJTA-IMCA Conference/Expo Updates
Conference/Expo Schedule of Events » Schedule
Preliminary Exhibitor List (Check back for updates as additional vendors confirm!) » Exhibitor List
Pre-Conference Short Course Topics » Basics & Beyond
Group Hotel Accepting Reservations » Hotel & Travel
Caution! WJTA-IMCA members and potential attendees have been targeted by illegitimate hotel brokers offering rooms. This is a common tradeshow scam that can leave you without a hotel room and/or with payment information compromised. If you are contacted by anyone claiming to offer rooms or services on WJTA-IMCA’s behalf, please alert the WJTA-IMCA office!
BHR Group 2016 23rd International Conference on Waterjetting
The WJTA-IMCA exhibition in New Orleans is over for 2016.
I missed a good exhibition and round-table of practical talks and a chance to mingle with colleagues.
However, I was preparing for the BHR Group Waterjetting 2016 conference in Seattle on Nov 15-18. This BHR group conference is typically held in Europe so it is my first chance to attend.
The BHR conference focuses on CUTTING, not cleaning. The topics are on fundamental research and the latest in cutting techniques. The delegates are from all over the world.
Axel Henning of OMAX, Randy Rapple of Barton, Mohamed Hashish of Flow, John Olsen of OMAX, Mark Fairhurst, BHR Group UK, Franz Trieb, BFT Gmbh, Austria, Peter Miles of OMAX, Ramulu Mamidala of Univ of Washington, David Summers- Professor Emeritus, Missouri Univ of Science and Technology, Peter Liu of OMAX, and Vanessa Cutler- Consultant UK-Glass sculpturing with WJ.
The topics cover abrasives, water jet cutting fundamental research, and the ECONOMICS.
There are a few paper on applications other than cutting.
I, Lydia Frenzel will present What Effect deos waterjet cleaning have on the surface and surface preparation from a 30 years perspective.
David Summer will talk about Water Jetting- Where the Past is Prologue based on his 50 year history with waterjet applications in engineering projects.
There is a forum session on Water Jetting in Hazardous Environments- Removing Humans from Risk.
Think of wet abrasive blasting on steroids as they talk about hydro-milling, and the details of surface finishing.
WJTA-IMCA Nov 2-3, 2016 Exhibition and Demostrations, New Orleans, LA
The 2016 WJTA-IMCA is a two day filled meeting with practical talks and demos. The registration is $30 (one day) to $45 (2 day). The WJTA_IMCA features a panel discussion on the Future of the Industry which includes contractors, owners, and equipment manufacturers :
Jim Ashmead, E.I. DuPont
Rawlin Brown, StoneAge, Inc.
Bradley Coble, PSC
Andrew DeBusk, DeBusk Service Group
Terry Gomes, Terydon, Inc.
John Hodges, Evergreen Industrial Services
Liam Kearney, J. Hvidtved Larsen US, Inc.
Gary Noto, HydroChem LLC
Click on this link to get further information.
Microscopic Analysis of Steel after Waterjet Cleaning
In the late 1990’s, I received a report from Materials Evaluation Laboratory. The report is copyrighted. The pump company had cleaned UHP WJ on panels supplied by a major oil company. Materials Evaluation Laboratory analyzed the substrate with microscopy and metallurgy compared to abrasive blasting. This was at the time that UHP WJ was scarce and people were wondering what was happening at the surface. Would the surface be stressed?
Their conclusions:
1. Pressurized water effectively removed rust and other corrosion products from metal surfaces. This was done
with minimal disturbance of microstructural features.
2. Methods using abrasive particles were necessary for the removal of adherent mill scale. Those techniques cause
severe distortion of the metal surface.
3. The pressurized water method was considered the best preparatory cleaning for non-destructive inspection.
It offered a more “authentic” representation of the surface than the other methods evaluated.
This material is copyrighted. Please acknowledge the source. The Advisory Council can use it for educational purposes. It is not considered an endorsement nor recommendation.
Materials Evaluation Lab effect on surface 1991
Materials Evaluation Lab effect on surface 1991 Page 1 sanatized
Quality of Water for Use in High Pressure Pumps
For 30 years, I have received questions about the quality of water that should be used for removal of coatings. How much dissolved material or minerals gets left on the surface? Just recently after an hour long webinar to 200 people, the questions was “What shoul the quality of the water be?”
Among the first comments which I received on the WJ standards documents came from Singapore: The complaint was that we didn’t advocate cleaning with brackish or filtered seawater.” Just recently in 2015, a Sherwin Williams representative talked about the methodology in Brazil where WJ was being used for primary surface preparation, and not just potable water. However, I also received call in the mid 190’s where contractors said that they could tell the difference of quality of water between municipality sources. The better the quality of water, the better the removal, and the less flash rust.
As a task group leader for NACE and SSPC, the task groups finally defined surface preparation water. Surface Preparation water is water of sufficient purity and quality that it does not prevent the surface being cleaned from achieving the WJ-1 degree of surface cleanliness or nonvisible contaminant criteria when contained in the procurement documents. SP water should not contain sediments or other impurities that are destructive to the proper functioning of the cleaning equipment.
The following is a monograph on
The Quality of Water to be used in Surface Preparation and to Protect the Pumps.