Originally built in the 1930s, the Grand Coulee Dam in Washington State has been undergoing a series of maintenance projects to ensure that it will continue to produce safe and reliable power into the future. One stage of the project required the heating of a 40-ft wide, 7-ft tall outer head cover of the turbine shaft to a specific core temperature. In order to achieve this temperature, the engineers applied induction heating to one side of the workpiece. Only when the opposite side of the workpiece reached target temperature could the maintenance engineers be certain that the required core temperature had been achieved. The team from Red-D-Arc provided induction heating systems and assistance with training and set up during this essential part of the maintenance process.
More than equipment
Red-D-Arc brings more than equipment to each project; it partners with customers to provide helpful insights into the unique challenges that each project presents. Red-D-Arc associates have many years of experience supporting customers involved in energy related projects including hydroelectric, wind energy and nuclear power. Red-D-Arc’s induction heating experts are highly respected for their innovative approach to induction heating technology applications.
19 Hours Faster Than the Competition
One of our customers was trying to heat 42” diameter pipe using pear burners so that welders could weld out the joints. Our team saw an opportunity to create a solution that would help our customer get the job done much more quickly. To make this in-the-field heating job go faster, we put together a package including a Miller ProHeat 35 induction heating system, a 60kVA generator and a DP25 power distribution panel.
With this setup we were able to get the pipe up to 250 degrees in about 5 minutes. Our customer was able to beat the competition’s target time by over 19 hours and has been asked to quote on other pipeline work for their client. Needless to say they were pleased with the solution and the opportunity for extra work it created.
This portable induction turnkey package is a great way to heat pipes in remote locations. There is less risk to the welders from the hot pipe and the process is much, much faster.
“We were able to get the pipe up to 250 degrees in about 5 minutes”
Custom turnkey packages like the one described here are Red-D-Arc’s specialty. Our team of experts has created turnkey solutions to solve challenges in diverse industries including, mining, oilfield, offshore, nuclear and manufacturing. We enjoy helping our clients find new ways to grow their businesses, by combining the latest technology, depth of experience and flexible leasing options that fit their needs.
Remote worksites pose no obstacle. We’ll bring portable generators with enough power for your portable welders, induction heaters, lighting and anything else that needs power.
Pre-weld and post-weld heat treating is critical for many welding operations. Without proper thermal manipulation, welds and heat affected zones can have mechanical properties that are undesirable. Worse yet, inadequate heat treatment can result in cracks and devastating weld failures. While temperature and time are the primary concerns when heat treating a weld, the heating method should also be considered diligently when selecting a process. Induction heating is one of the most popular types of heat treating methods, and rightfully so. The benefits of induction heating are many, and Red-D-Arc has the equipment you need to successfully implement an induction heat treating operation for your projects.
What is Induction Heating?
Induction heating is a heat treating process that, when used properly, can alter the mechanical properties of a weld and its adjacent base metal in a way that meets the demands of the application in which the weld is being used. Induction heating relies on the science of electromagnetism to heat the part. Induction coils are placed around the material being heat treated, and alternating current is fed through them. This alternating current going through the induction coils creates a rapidly alternating magnetic field.
The eddy currents that occur as a result of this heat the material surrounded by the coils. Magnetic materials are even more easily heated by the alternating magnetic fields.
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.
This innovative solution saved our customer a substantial amount of time and money. Our customer was able to keep a project —which would normally be outsourced— in house. As an added benefit, they now have a new service they can promote to their customers.
“ A job that was originally bid at 40 hours
took just 3 hours to complete ”
Why outsource when you can get the job done internally?
Consult one of our experts before starting your next project to see how you can build your business.
Red-D-Arc’s welding experts enjoy helping customers find better ways of getting the job done.
Red-D-Arc is recognized around the world as the welder rental specialist. We have been renting welding equipment for more than 60 years and our welding-equipment fleet is now more than six-times larger than our closest competitor. But did you know that Red-D-Arc is a leader in Weld Automation, Diesel Generator Rental, Induction Heating Systems, Pipe Welding Equipment, Blast Cleaning Equipment, Specialty Equipment, and Cutting Tables? Over the past 20 years we have been listening to our customers and continuously adding new products and services to meet their needs.
We produced a short video showcasing some of our many products and services. Enjoy!