Inspection, Surface Prep and Non-destructive Testing
Are you in the oil & gas industry? Are you involved in non-destructive testing, inspection, or surface preparation? How about maintenance of pipelines, heat exchangers, or pressure vessels? If you deal with these or similar operations, proper cleaning of surfaces might well be a process you regularly undertake.
Cleaning Delicate Equipment Safely
What is the best way to clean surfaces of such equipment? While there is no one best way for every circumstance, dry ice cleaning is a state-of-the-art method that can save time and money. It uses recycled CO2 in the form of solid dry ice particles as the cleaning media. Dry ice is soft and non-abrasive to most surfaces and can thus be used around delicate components, including electronics, that would be damaged by water or solvents. As the blasting equipment is portable it can be used in place, thus minimizing disassembly and other preparation time. Lastly, dry ice turns to a gas after contact with the surface being cleaned — cleanup time is rock bottom minimum, there is nothing to dispose of, contamination of moving parts is not an issue. (more…)
To begin, let’s establish what exactly we’re talking about when we say “biodiesel.” ASTM (American Society for Testing and Materials) has published a standard, D6751-07b, that defines what biodiesel is. We’re not talking about used cooking grease, or even commercially produced biodiesel, if it doesn’t meet this standard.
Also, the word “biodiesel” is often used to describe what is actually a blend of biodiesel and diesel fuel. (The diesel fuel sold for on-road use in the U.S. is Ultra Low Sulfur Diesel fuel, or ULSD.) The term “BX” designates the blend ratio, where “X” stands for the percentage of biodiesel in the blend. So B100 means 100%, or pure, biodiesel, while B20 means 20% biodiesel mixed with 80% ULSD.
Additionally, this article doesn’t address OEM recommendations or warranty limitations. We’re simply looking at the question from a mechanical standpoint.
So now, with all that out of the way, what’s the bottom line? (more…)
Welding small diameter tubing can be difficult. The tight radii often require expert welders to deliver precise torch manipulation with finesse. If the welder is not skilled enough, the out of position areas are at risk of poor quality due to gravity affecting the weld pool and ineffective torch angles. If out of position welds cannot be completed satisfactorily, the part must be rotated. However, some assemblies can’t be rotated because of size constraints or they might rotate off of center. If a mechanized welding solution is desired for small diameter components, look no further than our Axxair Orbital Fusion Closed Welding Head Systems. (more…)
We are pleased to announce the launch of a new product in our weld automation category. Red-D-Arc now offers adjustable pipe stands with a carrying capacity of up to 4 tons, in both low and high profile versions. Combined with our turning rolls and positioners, these stands offer an effective solution for supporting pipes during the welding process for both manual and automated applications.
“Pipe stands with a carrying capacity up to 4 tons… low and high profile versions available.”
Our pipe stands feature polyurethane rollers and have been fully UL and CE tested. All of Red-D-Arc’s weld automation equipment has had its weight capacity UL verified to ensure safety and quality. This is a first in the weld automation industry. (more…)
When selecting a wire electrode for welding, one will most likely run into an American Welding Society (AWS) filler metal classification. A purchaser who isn’t familiar with the AWS classification system might select the wrong type of wire. If the purchaser is only familiar with gas metal arc welding (GMAW) wire and is attempting to purchase self-shielded flux-cored wire (FCAW-S), confusion may arise about the differences between the two classifications. This too could result in selecting the wrong wire electrode. To help prevent this from happening, we’ve created this welding wire reference guide to remind welders exactly what the different AWS classifications designations mean. We’ve included references for solid wire electrodes, metal-cored wire electrodes, gas-shielded flux-cored electrodes, and self-shielded flux-cored electrodes.
When one of our customers was tasked with an electrical motor shaft rebuild that required them to weld new fins onto a 7” diameter shaft, they called on Red-D-Arc’s team of experts for assistance. The job required the shaft to be preheated to a temperature of 400°F and welded using a submerged-arc process (SAW). Using the Miller Proheat 35 and Lincoln’s LT7 sub arc package, a job that was originally bid at 40 hours took just 3 hours to complete. (more…)
Firefighting teams are stretched thin across multiple sites and are fighting fires around the clock
Oregon: Lightning strikes have started wildfires in multiple locations from Crater Lake to the Siskiyou Mountains. Governor Kate Brown has declared a statewide wildfire emergency. Fortunately, none of the fires have yet blown up into large scale thousand acre burns, but with temperatures expected to remain in the high 90s for the next week, the fires may grow and there are number of areas with evacuation warnings pending. (more…)
A Red-D-Arc customer recently won a large naval defense contract that would require a substantial amount of hard automation equipment. This shipbuilding company was able to leverage Red-D-Arc’s Welderlogistics Lease program to acquire new weld automation equipment for the duration of the defense contract. With the help of over 200 pieces of leased equipment now in their fleet, this customer has grown their business considerably, and without the need for large capital expenditure.
Leasing equipment has many advantages for organizations that want to expand their business by bidding on large contracts, without the risk of tying up capital in depreciating equipment. All leased equipment comes with a full factory warranty for the duration of the contract and will be repaired or replaced without charge in the event of breakdown. (more…)
The method you select for welding pipe will depend on the location where the welding is taking place, materials and pipe size.
For welding steel pipes in the open (e.g. pipe installation in trenches), manual arc welding (SMAW) is most common. This technique used is downhill using cellulosic electrodes (also basic electrodes are used for higher strength steel applications). A root pass and a hot pass are followed by the fill passes. The weld is finalized by the top pass. Welding units optimised for downhill welding are utilised.
Welding Smaller Pipes
For small diameter and short length pipes which are free to rotate, the pipe is rotated while the welding torch is held stationary. The processes used are MIG (GMAW) and TIG (GTAW). In the case of TIG welding a wire feeder is necessary. A process cell is best for this type of welding.
Welding Large Pipes
In applications involving larger pipe sizes, welding is generally carried out using the orbital process. MIG is usually employed, but TIG with automatic feed of the filler wire can also be used. Orbital process using closed head welding units is also utilized for applications where smaller pipes cannot be rotated.
There are a number of advanced methods of depositing pipe welds currently in use. These include precisely controlled short circuit transfer for root pass (Miller – Regulated Metal Deposition), optimized pulsed welding (Miller – Pro-Pulse) and high frequency waveform control (Lincoln – Surface Tension Transfer) in order to speed up and improve the quality of the pipe welds.
Red-D-Arc has a wide range of pipe welding equipment for rent including the following:
Red-D-Arc will be at the Fabtech 2018 Tradeshow in Toronto from June 12-14, 2018. Drop by our booth to view some of our latest rental offerings. You can find us at booth #1381
Our display will be part of the Air Liquide’s presentation which will include filler metals, welding gases, and safety products. A limited number of free samples of BLUESHIELD abrasives will be available as well. Drop by early to make sure you get one.
Win a Welder or Plasma Cutter
Visitors to the Air Liquide display will be able to complete a brief survey for a chance to win one of 2 machines:
Dry ice blasting is a state-of-the-art cleaning method that can save time and money — typically the cleanup can be accomplished in one third the time of traditional cleaning methods and, even more important, the cleaning job is more thorough, especially in hard to reach places.
Powerful, non-destructive blast cleaning with minimal cleanup
Dry ice cleaning uses recycled CO2 in the form of solid dry ice particles as the cleaning media. There are a range of intensity settings available, depending on the application, ranging from deep, powerful surface cleaning to extremely fine settings for jobs requiring light cleaning. Dry ice is non-abrasive to most surfaces and can be used around delicate components, including electronics, which would be damaged by water or solvents. Dry ice turns to a gas after contact with the surface being cleaned — clean-up time is kept to a minimum and there is no waste material to dispose of. (more…)
Our Atlanta location recently received ISO 9001 : 2015 certification.
ISO standards cover almost all aspects of business and manufacturing. They provide a unified set of world-class specifications for products, services and systems, that help ensure quality, safety and efficiency in business. The standards are developed by consensus between experts from around the globe and cover all types of businesses and industries. Consequently, they reflect a wealth of international experience and knowledge. ISO standards help businesses work together reliably and are a trusted marker for any organization that achieves certification.
Congratulations to everyone on our team in Austell who helped to realize this achievement.
Congratulations to Joe Rios, Carlos Hernandez and the rest of the Smokin’ Welders team who cleaned up big at a cookoff hosted by the Associated Builders and Contractors Texas Gulf Coast chapter.
We entered 3 teams in this year’s cookoff which collectively won the title of Grand Champion. The individual Red-D-Arc teams dominated the contest with the following results in the various categories:
Fajitas – 2nd, 3rd and 4th place
Chicken – 4th, 5th and 7th place
Brisket – 1st, 4th and 10th place
Ribs – 1st, 4th and 7th place
The annual cook-off was held to raise money for Veterans and The Back-Packs for kids program which sends food home with school kids that need food for the weekends. The contest also helps support the Dream Center which provides kids in need with shoes, clothes and school supplies.
We tried to get Carlos to share some of his recipes, but he was hesitant about giving up his winning secrets.
Great job guys. Thanks to everyone who helped the RDA Smokin’ Welders win big.
Industrial paint booths require periodic cleaning in order to maintain productivity and quality. On average, paint booth cleaning intervals range between 6 to 12 months. Typical cleaning methods involve hand scraping and wire brushing. Awkward angles and hard-to-clean areas like seams and bolt heads make this time consuming process very challenging.
To help our customers address this challenge Red-D-Arc has developed a Dry Ice Blasting Paint Booth Rental Package. This turnkey solution includes dry ice blasting machines, dry ice, high pressure air (if required), synthetic coatings (to limit future paint adhesion on booth interior) and on-site operating and safety training. (more…)
Metallic parts sometimes fail their intended use at a lower stress than they are designated for.
Various forms of wear such as abrasion, impact, metal to metal contact, heat, and corrosion can compromise the strength of metal pieces. This is where hardfacing comes in. Hardfacing is a technique which can be applied to minimize the damage from these types of wear, helping to prolong the life of metal pieces.
What is hardfacing?
Hardfacing —often called hardsurfacing— is the covering of the metallic part with a wear resistant metal by welding. Alloys which commonly need to be hardfaced include carbon alloy and low alloy steels whose carbon content is lower than 1 %. These include stainless steels, manganese steels, cast iron as well as nickel and copper-based alloys.
Metallic parts sometimes fail their intended use at a lower stress than they are designated for.
Techniques, Materials and Costs
The particular hardfacing technique for a job depends on the geometry of the part and relative cost of the hardfacing method. Costs can vary with the deposition rate of the material.
These cost variations can be summarized as follows:
Flux cored arc welding (FCAW) 8 to 25 lb/hr
Shielded Metal Arc Welding (SMAW) 3 to 5 lb/hr
Gas Metal Arc Welding (GMAW), including both gas-shielded and open arc welding 5 to 12 lb/hr
Oxyfuel Welding (OFW) 5 to 10 lb/hr
Applied materials commonly include cobalt based alloys such as STELITE, and nickel based materials like chromium carbide alloys. More advanced materials such as complex carbides containing columbium, molybdenum, tungsten, or vanadium can also be used and provide more overall abrasion resistance. They also have a very low friction factor, which can be used in situations involving severe abrasion.
Hardfacing can be applied to both newly manufactured pieces, in order to prevent deterioration, or to strengthen and extend the life of worn pieces currently in use.
Red-D-Arc provides welding machines suitable for hardfacing using techniques including SMAW, FCAW and GMAW.
Gas (oxy-acetylene) welders used to be the rock stars of welding. From shipbuilding to automotive manufacturing to steel forging, but that was then. Arc welding is a modern welding method that outmatches gas welding in almost every respect.
Arc welders use electric current generated by a transformer or a generator to produce a uniform, clean welds that almost never require finishing. This is not the case with gas welding. Gas welding operates using the heat generated by the ignition of a gas mixture (oxygen and acetylene) to melt the welding material or to simply fuse two parts together. This process often results in a bad surface finish. Gas welding can require additional work involving hours of grinding and polishing the welds. (more…)
Since 1996, the EPA’s regulations for non-road diesel engines emissions have been phased in through four progressively more stringent tiers. Different tiers went into effect at different dates for different engines, but since 2015, all new non-road diesel engines, including stationary engines, but comply with the EPA’s Tier IV (Final) standard.
Today’s Tier IV compliant diesel engines are far more complex, efficient, and expensive than their unregulated ancestors from the early 1990’s.
How does Tier 4 compare with the previous generation (Tier III)?
For Tier III, the standard focused on reducing NOx (nitrous oxides) and NMHC (all hydrocarbons except methane) emissions to levels on par with federal requirements for on-road diesel engines. Since these non-road emissions were unregulated prior to the Tier Emissions Standards, we have no basis for a hard comparison, but the EPA estimates that since 2010, Tier III has been reducing NOx emissions by about 1 million tons per year. This is the amount of NOx produced annually by about 35 million cars.
Conspicuously absent from Tier III was any limit on PM (particulate matter), although the Tier II limit still applied to Tier III motors. (more…)
It’s a beautiful day in Tulsa Oklahoma. – April 4, 2018
Drop by booth #507 and check out our Orbital Tig and Induction Heating systems. We’ve got a beautifully reconditioned 300 amp Red-D-Arc Diesel welder for sale with special show pricing!!
Don’t forget to scan your badge for PennWell Drone Draw!!
Having worked in shipyards for seven years, I’m familiar with how dirty this type of job site can be. Ship repair worksites and welding surfaces are often filthy with rust, dust and other contaminants. Even in shops and yards where fabrication is ongoing, cleanliness is often lacking. If fabricated or refurbished pieces are being installed onboard, the surface to which the piece will be welded could be rusty, coated with scale, or have other types of corrosion. (more…)
Importance of Preheating in Welding – Equipment Options
Preheating reduces the risk of cracking in weld metal and heat-affected zone (HAZ) by:
Lowering the cooling rate of the weld – prevents formation of brittle weld metal/HAZ, allows more time for hydrogen to escape the molten weld.
Removing moisture (hydrogen source) from the part.
Reducing shrinkage by lowering the temperature differential.
Preheat or not?
The requirement and level of preheating for steel is determined by the relevant welding code and is dependent on the weld heat input, chemical composition of steel (carbon equivalent), thicknesses, diffusible hydrogen etc. Non-ferrous materials generally require preheat because of their high thermal conductivity.
Red-D-Arc supplied three 125 kVA power generators and one 70 kVA power generator to the recent Stars and Thunder music festival. The generators were used for lighting and backstage power throughout the entire 8 day festival.
Stars and Thunder music festival took place in Timmins, Ontario June 24th-July 1st 2017 to celebrate Canada’s 150th birthday. The festival spotlighted Canadian groups such as Michel Pagliaro, David Wilcox, Sass Jordan, Tom Cochrane, April Wine, as well as some international acts like Keith Urban.
Red-D-Arc offers a full line of engine-driven, parallel ready generators including diesel generators, natural gas/LPG bi-fuel gaseous generators and diesel/natural gas dual fuel generators for rent, lease and sale. Learn more about Red-D-Arc power generators.
How important is it to remove welding smoke from the work area? Ask a welder, or ask someone who has to work in the vicinity of welders working in enclosed or semi-enclosed areas.
I recall some years ago working on a Navy general cargo ship. The ship was was undergoing extensive renovations and the hold of the had four or five levels. My employer, a small repair yard in San Francisco, unfortunately did not take air quality in the work area seriously. There were more than 20 of us working in the hold, and some number of us were welders. From a distance you could see where the work was being done — smoke and fumes drifting up out of the hold! In those days, safety requirements weren’t always top of mind. OSHA and other regulations aside, taking care of your workers by providing a safe work environment is simply the right thing to do. Without them your business can never be profitable. By failing to provide a safe workplace, you may lose workers due to health issues and employee turnover or face consequences for not complying with standards.
“respirators are hot and uncomfortable, and many welders simply refuse to use them”
There are a number of ways to deal with welding fume issues. One approach is the use of respirators. I often wore one, but they are hot and uncomfortable, and many welders simply refuse to use them. They can be remarkably expensive, over the long haul, given that filters must be replaced daily. If the mask is a disposable type, the entire mask must be replaced daily.
Portable smoke extractors – sometimes referred to as smoke eaters – are a far better solution. They extract a higher percentage of the fumes than respirator masks and protect everyone in the work area, not just the welders. They can be moved around the job site and from one job site to another, but can also be set up at permanent work stations. These machines can help make sure that your work space is a place where people can get their work done safely. Your employees will thank you.
Red-D-Arc was featured in the December/January issue of Tank Storage Magazine in an editorial titled “Rental welding equipment for storage tank fabricators”. Tank Storage Magazine is an industry leading publication, reporting exclusively on the bulk liquid storage tank and terminal sector.
The storage tank construction industry is highly competitive and fabricators gain a significant advantage by leveraging Red-D-Arc’s rental fleet of automatic tank welding equipment. Red-D-Arc supplies specialized automatic storage tank welding equipment to companies in the tank fabrication industry for projects all over the world.
Along with our specialized tank welding equipment comes a highly knowledgeable and experienced team of Red-D-Arc technicians. Sayer Hendricks – storage tank welding equipment specialist at Red-D-Arc is quoted in the article: “A fabrication company without prior knowledge of the equipment, is able to rent a turn-key tank welding automation system and increase their welding productivity by 40-50%. With on-site training, service and support, our customers are up and running quickly and making 100% x-ray quality welds without fail”
Some years back I was working in a shipyard in San Francisco. The yard had several small repair jobs going, plus a fairly large project building six ocean-going barges. The supervisor who was in charge of the barge-building project was looking for volunteers to operate semi-automatic wire feeders, using flux-cored wire, to weld stiffeners to the skin of the barges. I had never used a wire feeder before, so I volunteered out of curiosity.
After a very short training period, possibly all of 30 minutes but I think a bit less, I was off and running. I was impressed by the quality of the welds and the speed at which they were deposited. Without question I was outpacing anything that could be done by stick welding, and I felt it was easier to maintain a uniform weld size too. The machine itself was light enough and small enough to move without difficulty, and the spools of wire lasted long and were quick and easy to replace when the spool of welding wire was finished.
Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.