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Welding Quality Assurance & Quality Control Processes

16 December, 19 3:28 pm · Leave a comment · Geoff Campbell
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Quality Assurance

Quality Assurance (QA) is a set of defined processes for systematic monitoring and evaluation to assure product quality.

Quality Control

Quality Control (QC) is the process of confirming that the product meets the specifications. It includes the checking and testing of manufacturing procedures as well as the final products. The results from these tests are compared with a set of defined acceptance criteria. By carrying out QC testing during manufacturing, defects can be identified in a timely manner, allowing for the product flaw to be rectified and if required, adjustments to be made in the manufacturing process to prevent further defective output.

In welding, QA/QC plays a vital role in ensuring sound and reliable welds are produced and in minimizing rework.
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Features of the Millermatic 252

17 June, 19 3:36 pm · Leave a comment · reddarc2
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The Millermatic 252 is an impressive machine that’s capable of 300A output amperage. This allows you to weld at higher output for a prolonged period of time ⁠- perfect for those longer jobs. The 252 is suitable for a wide range of industrial work and is able to go from 22 gauge to 1/2 inch steel in a single pass.

If you’re regularly welding large pieces of metal for sustained periods of time or you need a machine that’s up to the task of working in a busy shop, the Millermatic 252 should be your number one choice.

millermatic 252

Best Features of the Millermatic 252

The 252 has the highest output of all welders in the Millermatic range, making it a fantastic choice for those who weld for a living. It’s an incredibly versatile machine that can withstand even the busiest of environments and heaviest of workloads. Whether you’re using this machine to weld stainless steel or carbon steel, the Millermatic 252 is more than capable of the task.

For welders who need to pump a ton of wire into their welds, a resilient and reliable setup is a must. Being able to weld effectively without running the risk of delays is vital in this day and age. Financial losses as a result of machine breakdowns or jams can have a negative effect on a business. Remember, it’s important to select the right welding wire for the job.

Thankfully, the Millermatic 252 has a top of the range design that has been specially engineered to prevent incidents like this from occurring. It features an aluminum dual-gear drive system that allows the machine to feed wire without the need for any downtime. There are spaces on the machine for you to store drive rolls, so the disruption to your work is minimized.

  • The trademarked Auto Gun Detect technology allows users to simply pull the trigger on their MIG, spool, or push and pull gun and the Millermatic 252 detects the appropriate voltage and wire feed speed of the active gun. This saves a lot of time in the workplace and can reduce your job turnaround time dramatically, especially when you’ve taken the importance of welding surface preparation into consideration.
  • The cast aluminium drive system feature a number of controls that make the user experience as smooth as possible, including quick-change drive rolls, and an easy to set tension knob.
  • The EZ-Change™ cylinder rack allows users to change cylinders with minimal fuss by simply rolling them on and off. This is another time-saving feature that serves to make your welding experience as smooth as possible.
  • With an impressive gun range of 15ft, the Millermatic 252 enables users to work at longer distances than most of its competitor’s machines. The length means that it’s easy to work on larger pieces of metal without the need to be constantly readjusting the placement of your equipment.

The Drawbacks of the Millermatic 252

The Millermatic 252 is quite a big machine. Consequently, it’s not really suitable to be moved between locations due to the sheer size of it. As such, it’s best suited for a shop environment. Also, the larger MIG gun can make more intricate, thin work a challenge. Despite these minor drawbacks, the Millermatic 252 is an impressive machine that can hold its own among the best on the market.

Millermatic 252 Specifications

Unit Height: 30 in.
Unit Length: 40 in.
Unit Width: 19 in.
Rated Output: 300A maximum of 200 Amps at 28 VDC on a 60% duty cycle OR 250 Amps at 28 VDC on a 40% duty cycle
Input Voltage: 220/230/240 V
Weld Thickness: The 252 is able to weld anything from 22 gauge to 1/2 inch mild steel
Wire Feed Speed Range: 50 inches per minute to 700 inches per minute
Welding Amperage Range: 30 A – 300

Here at Red-D-Arc, we have a fantastic range of welding and welding-related products available to rent. With over 60,000 items available, we’re sure to have something you need.

Features of the Millermatic 252| Red-d-Arc

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6 Tips to Improve Welding Safety

11 June, 19 2:38 pm · Leave a comment · reddarc2
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Welding is a rewarding career, but work-related injuries can deter you; therefore, you must have the right knowledge about welding safety.

With the right welding safety precautions, welding as a career may offer an excellent income, job security, and even the opportunity to travel.

Some welders and the companies that employ them forget to follow the precautions, resulting in injuries that can be devastating. The Department of Labor estimates that in every a thousand welders, four of them will be fatally injured at some point of their careers. Because of this danger, there are numerous safety regulations you should always follow to help protect welders and those around them.

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6 Welding Safety Tips


1 – Wear proper gear.

It is very crucial to have the right gear when you are welding. If you own a workshop, then you should ensure that your employees are completely covered.  Every welder should wear flame-resistant clothing such as denim or wool. If cotton is worn, it should be treated to ensure that it is fire-resistant.

A welding jacket is an excellent way to help protect workers. Some may complain that welding jackets are too hot and too heavy to wear and will try to avoid wearing them. Many of the companies who make safety gear now make clothing that is lightweight yet still provides a great deal of protection. Newer styles allow welders more comfort and mobility.

Gloves are also essential for welding safety. In the past, the gloves were simply one-size fits all. Nowadays, gloves are designed with different sizes for different welding procedures. These new age gloves allow for welders to have increased maneuverability to work safely, yet efficiently. When it comes to shoes, boots, and high-top leather shoes offer the best for protection.

2 – Avoid the light.

Arc flash can damage the eyes. Always avoid exposure to the flash by wearing welding helmets fitted with a proper filtering shade to keep your eyes and face safe when welding. Select approved safety glasses with protective shields at the sides and ear protection to wear under the helmet. Also, go for a lens shade that is suitable for your welding application. You can use the OSHA guide to choose the best lens based on your welding procedures. Additionally, companies should install barriers or screens where appropriate to protect workers from arc flash.

welder working on welding safety

3 – Avoid repetitive stress injuries.

Doing the same thing over and over again or being in the same position under the same strain for an extended period can frequently cause repetitive stress injuries. These kind of injuries have become a great concern to a lot of workers since they are severe enough to force a welder to give up his career. Workers should often take breaks to stretch. Managers should reiterate and stress that safe lifting techniques be practiced.

You can also avoid neck fatigue by using auto-darkening helmets. An auto-darkening helmet is lighter than the traditional fixed-shade helmet, and the worker is not required to look down to drop the hood frequently. Seconds saved between welds will allow for more productivity.

4 – Familiarize yourself with the equipment.

One of the most essential welding safety rules is to make sure that only workers who are adequately trained and authorized, use welding equipment. Many accidents occur because people use machines without the right training.

This often happens in home welding shops, where friends or family of the welder will try to work on a project themselves. It also occurs in professional settings when welders let others do their work or in the case of employers who wish to cut costs. Without proper training, increased incidence of injuries and property damage can be expected.

Additionally, everyone who operates a particular machine has to read the welder’s operating manual. It contains essential safety information, as well as information procedures that maximize the machine’s potential.


Ensure you read the welder’s operating manual.


5 – Proper ventilation.

Welding in a well-ventilated area that is at least 10,000 cubic feet with a 16-foot high ceiling. Place the welding equipment where you can get natural drafts or fans that blowin the fumes away from your face, or at least across it, but never straight into it. If the machine requires you to use a respirator or exhaust hood, wear the correct one to maintain clean breathing air.

6 – Don’t allow clutter.

Clutter is a welding workshop enemy. It is a significant cause of accidents such as fires since sparks can find more places to land and smolder. The working area should only have the equipment and tools that the workers are using.

To keep a workshop organized and safe, managers should consider labeling the places where each welding machine, tool, and equipment should be placed. Companies should also ensure that all welding cables are well-maintained. Then enforce the rules of keeping welding equipment and materials in proper places. Removing the clutter will help keep paths are clear and improve welding safety.

Rent Welding Equipment from Red-d-Arc Today!

As a responsible welder, try to do everything that you can to minimize accidents. Even when not welding, and just in the workshop, you still need to be safe. Incorporate safety into daily work habits and make sure that you follow these tips!

And when you’re ready to rent the best in welding equipment, contact Red-d-Arc. We can help you find exactly what you need! Click below or call us at 1-866-733-3272.

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6 Tips to Improve Welding Safety | Red-d-Arc

Different Welding Certifications

11 June, 19 1:48 pm · Leave a comment · reddarc2
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A welding certification is a key component for a professional welder that comes with many rewards; not to mention higher salaries, better job stability, and higher job demand. The welding industry forms a critical part of the global industrial sector.

Some of the industrial applications of welding include shipbuilding; in the fabrication processes of different metals like aluminum and steel, as well as providing various components used in the manufacture of HVAC units.

To create quality welds, a person is required to hold a certification in different welding categories. Therefore,  they are required to pass a welding test to ensure that they possesses the right skills for the job.

In welding, a certification may be equated to a crown worn by a king. It shows proof of your efficiency, effectiveness, and ability to match the job description and other unique tasks within a specific level of expertise. A welding test is conducted by an authorized and certified welding inspector. A welding professional who is certified in working on a specific position is not necessarily able to work on other positions.

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Types of Welds

Industrially, welding technicians use two main common types of welds. They include:

  • Fillet weld: Fillet welding involves joining two metals at a perpendicular position (at a right angle) or in a slanted angle. Fillet welds are also known as T joint or lap joint. Additionally, the two metals may also be welded in an overlapping position, which creates a triangular shape; used mainly in joining two metal tubes.
  • Groove weld: A groove weld is used to join two metal plates. A cross-sectional perspective of a groove weld shows two metals joined at a right/ slanted angle, giving it an L or V groove.

Understanding the Types of Welding Procedures

To propel your welding career to higher heights, you need to understand the processes involved in welding. Welders also need to undergo extensive training programs to develop hands-on experience. These are some of the factors that make a professional and versatile expert.

In any training college you attend, you may choose to learn about any of the following four procedures:

Shielded Metal Arc Welding (SMAW)

SMAW is a type of welding procedure that requires you to adhere to a stick welding manual. The process relies on electricity to create an arch between the stick and the surfaces to be joined. The procedure is used in the construction and fabrication of steel and iron structures.

Flux-Cored Arc Welding (FCAW)

The FCAW procedure was formulated as an alternative to the SMAW process. It utilizes an automatic arc weld during the construction of different metal structures.

Gas Metal Gas Welding/Metal Inert Gas (GMGW/MIG)

GMGW/ MIG welding is the most common type of procedure in the welding industry. A shielding gas that runs along an electrode is used to heat the two metals to be joined. The method requires a constant flow of direct current and voltage.

Gas Tungsten Arch Welding/Tungsten Inert Gas Welding (GTAW/TIG)

GTAW/ TIG welding is used in joining two pieces of thick stainless steel and other non-ferrous metals. This method uses electricity and a tungsten electrode that produces the weld. It is a slow process and therefore requires a lot of skill and patience.

Types of Welding Certifications

Whichever procedure of welding you want to pursue, you must have the corresponding certification. A number/ letter system usually denotes that. For instance, in a 2G certification, the 2 shows the level position and the G stands for the gr0ove. Here are some types of certifications.

1G Welding Certification

As a 1G certified welder, you have to have the skills to create quality welds in the first position – flat position. Therefore, you weld the joint while looking down at it.

With a 1G certification, you can only handle welding procedures of joining metals at a flat position. The major challenge during a 1G test is that gravity makes the slag flow faster than the arc, which may cause poor quality welds due to cold lap and slag inclusion.

blue welding certification

2G Welding Certification

Welders applying for a 2G welding test should be able to weld a joint moving from the left to right or vice versa while looking across the joint. It is a more advanced certification than the 1G test. Passing it means you can handle any jobs related to flat-position welding.

During this certification, welders are required to join two beveled plates with a first slow pass. The second layer is created rather quickly without quenching the first weld. That gives it the required quality.

3G and 4G Combo Welding Certification

While you may decide to take individual tests for both 3G and 4G certification, these two are typically combined. Excelling in the test combo shows you have the skills to meet any 3G and 4G jobs, including the others in the lower groove classes.

In 3G, both the plates and the weld axis are aligned vertically. In this position, you can either weld the joints from the bottom to the top, or starting from the top coming down. On the other hand, 4G welding requires skill sets that enable you to work on an overhead weld. Therefore, welders need to look up while joining overhead plates from the left to the right or the reverse.

5G and 6G Welding Certification

The 5G and 6G certifications feature a combination of tests that involve three positions: horizontal, vertical, and overhead. It is a type of certification required for welding pipes and tubes of small diameters; usually to be used in power plants and oil refinery industries. It is a complicated procedure because the horizontal position of the tubes involves a fixed 2G position as well as a 45-degree fixed position.

5G and 6G certifications are also used in the welding of larger pipes with bigger diameters. It is a line of work that calls for the knowledge of both 2G and 3G, where the pipe is fixed in a horizontal position and welded vertically using a recommended filler material.

Order Welding Rentals from Red-d-Arc Today!

Welding is an exciting and reliable industrial sector. It provides the required metal welds used in different industrial lines. Because of that, it is crucial for welding professionals to have the required certification to ensure they have the right skills required at a particular welding certification.

For questions and concerns, call our world-class customer representatives at 1-866-733-3272. Or, visit our contact page and order top-of-the-line welding materials.

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Different Welding Certifications| Red-d-Arc

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