Stainless steel contains a minimum of 10.5% chromium which imparts it corrosion resistance by forming an oxide layer on the surface. The most common stainless steel is the austenitic type (300 series) which contains chromium and nickel as alloying elements. Other types include ferritic, martensitic and duplex stainless steels. Most stainless steels are considered to have good weldability characteristics. Most common processes used for welding stainless steel are TIG (GTAW) and MIG (GMAW). But, stick welding (SMAW) is also utilized.
Differences in Properties:
The properties of stainless steel differ from mild steel, and these differences need consideration when welding as below:
- Higher coefficient of expansion, 50% more for austenitic – this results in more distortion
- Lower coefficient of heat transfer – welding requires lower heat input as it is conducted away slowly
- Lower electrical conductivity – using the correct and consistent stick-out distance is more critical when using MIG/TIG, higher wire speed for the same current is required when MIG welding
Red-D-Arc recently supplied a variety of equipment to a UAE based company that is fabricating pile piping and jackets for the largest offshore wind farm project in the world. The company had to meet a strict time line of only 6 months, and would require a massive amount of welding and weld automation equipment immediately. Through consultation with Red-D-Arc, the customer determined that renting the majority of the equipment would be the most economical option. Red-D-Arc was able to fulfil the customers equipment needs immediately thanks to our vast and diverse fleet of equipment.
This massive order involved equipment and support from Red-D-Arc North America, Red-D-Arc UK and Red-D-Arc Middle East. The order consisted of a variety of welding and weld automation equipment including:
• 23 column and booms with single and tandem submerged arc welders
• 20 submerged arc tractors
• 200 rotators
• 167 jack-up rotators
• 400 CC/CV inverter welders
• 200 FCAW wirefeeders
• 10 Induction Heating Systems
By renting the majority of the equipment the fabrication company avoided the need to invest heavily in specialized equipment and ensured they would meet their deadline. Red-D-Arc works with customers to address their unique challenges and develops specialized solutions. Learn more about customized turnkey packages here.
The Millermatic 252 —sometimes referred to as the Miller 252— is an extremely popular and easy to use welder. You only need to see the reviews quoted on Miller’s product site to see how much those who use this welder like it. It can be used for metal fabrication, maintenance and repair, farm and home use as well as light industrial applications.
Capable of MIG (GMAW), Wirefeed, and Flux-Cored Welding (FCAW),this machine employs Active Arc Stabilizer technology which creates consistent power output resulting in better quality welds. The push/pull gun connects directly to the unit with no extra module required in between.
The unit detects the gun automatically and recalls the voltage, wire feed speed and timer of the active gun. There’s a panel on the front of the unit with a quick-reference parameter chart so you can quickly apply the correct settings for the consumables you are using. This welder has the highest output in its class (250 A at 28 VDC) allowing longer welding times on high-end applications. This is a very popular unit, praised for its ease of use by people who are learning to weld, hobbyists and others for whom welding is only one of many tasks they perform in a day. One user says that he taught his entire family to weld using this machine, including his 57 year old mother. Feature rich, well thought out, and easy to use, you would be hard pressed to find a better welder than the Millermatic 252.
Interested in renting one? Request a Quote.
See the Millermatic 252 in Action
We’re currently running a special offer on used welding equipment. Our Quality Checked pre-owned welders are thoroughly checked over and maintained to ensure that you’ll get a reliable machine that is in excellent condition. Select Rated machines run and weld to the manufacturer’s specifications are operationally safe and load bank tested. These machines come with warranties which vary depending on status of the machine. 90 day warranty on Select Rated machines 12 months for Quality Checked. See the flyer for details in your area.
Offers Valid Until March 31, 2016
The DC600 and the Milller Dimension 452 are just a few of the used welders we have available.