Duty Cycle Counting welder, and Thermal Stress

A duty cycle rating Welders (Specification) is a person who is assigned to the continuity of the benefits of output current.
It is expressed as a percentage of welding time for a period of 10 minutes (which Weld 100% of the time equals 10 minutes) at a specified output current. For example, let us consider the specification: 300A @ 40% duty cycle. A 40% duty cycle is 4 minutes of a period of 10 minutes Welder can operate. For another 6 minutes, the welder must be cooled. If not, Welder will close and more LED light temperature, or Thermal Error code display. If this happens to Weldor (people who weld metal) had to stop production and wait for long to clean up the temperature conditions. The welders are more basic (Transformer / welder SCR based) usually combines two types of bi-metallic strip thermostat (one input Heatsink Rectifier Assembly, and the other at the output Diode Heatsink Assembly). They are wired in series with the current one that is able to open under heat stress. The more advanced welder (welder microprocessor controlled inverter based) usually combines the two thermistors (type Resistor with Negative Temperature Coefficient) to achieve the same result, but a more complex electronic circuits are now engaged to measure the thermal characteristics while being operated Welder.

When the welding specifications are exceeded other than turning off and displays error conditions, internal Fan welder must operate to bring the temperature of the heatsink components to a safe operating temperature. This usually occurs at about 158 ​​degrees F (70 degrees C). This is the maximum tolerable temperature rating for most commercial-grade electronic components. Mounted on a good heatsink (or combination) Rectifier Diodes, the SCR, the IGBT and MOSFET. If the fan stops working or temperature sense circuit failure, these components can be degraded or permanently damaged due to thermal stress.

Must wait to complete the work due to low or specification errors During the temperature is non-productive and frustrating for all parties. This is particularly so when the project deadline, because time is money! When the electronic component failure due to thermal stress anxiety Weldor only increased by a factor of ten. Now Welder totally inoperative until some trouble shooting to do. Once again ... time is money!

When the welding current is determined on a cycle of 100% Weld Output current can be maintained indefinitely, without the need for cold Welder requirements.

Manufacturers publish specifications for their welding Operator Manuals, Service Manual, and Technical Sales Brochures. Unfortunately, Weld output current does not always appear in the ranking of DC 100%. A conversion formula is very useful in situations like this.

To calculate the output current based on the specifications of the cycle using the following formula:

I out = √ [((I x I rated rate) × (DC Spec rate)) ÷ (DC Spec required)]

From the previous example of 300 A DC @ 40%, we can now easily calculate the output current to DC Weld 100%, as follows:

I out = √ [((300 x 300) x (40)) ÷ (100)]

I out = 189.74 Amps.

As you can see, the output current at 100% Duty Cycle is quite a bit smaller than the 300 Amp Welder claimed this. Duty cycle makes a difference!

Consider While Selecting a Welding Accessories

Even if the welder novice or an expert in the field of welding, there are some important instruments for them when they are in employment. This equipment is called welding accessories and they are a key element of the melting process. When it comes to taking the best tools of the thousands of options available in the market, are expected to come out a difficult task and time consuming. If you know any popular stores nearby your area then go to visit the store and have a view on the required product.

If you do not want to go out and visit the store and then search through the internet because you can get a large collection of welding equipment or tools on a different website. Because there are many sites available that provide similar products, you need to know and look out accessories from popular sites just because some of them may be a fake site as well. There are fewer chances to get cheated if the stores are very popular.

Most of the famous stores like never last generator provides a wide range of welding equipment. Type of store also offers accessories for the beginner and the professional welder. There are quite a lot of factors come into play that you need to consider when choosing the appropriate tool. Costs, product functionality, quality power, and consumables are several important aspects to be considered.

Your budget should be first and foremost thing to consider when choosing any product. The item you will buy will be determined by the amount or resources you have to consider paying the welding accessories and supplies. It is understandable that people want to get the best quality goods at reasonable prices.

Equipment you need will also depend on the purpose of the fuse that you do. Items can be purchased in accordance with the specific operation. Therefore, it is necessary to consider the basic needs and requirements of a particular type of weld that you usually run before buying anything. Availability and power requirements are also an important factor to be considered. You can easily determine the power requirements of the welding instrument to determine the size and variety of metals are most often you will fuse.

Even so critical in some cases where you need to integrate thick aluminum sheet metal and thin. Thus power is the main thing that will affect the types of products and instruments that you will buy. The cost of all welding consumables is important to consider because the cost of different gases are used in a constantly changing instruments. So keep watching the different trends of welding accessories in the market for operating expenses in flux.

Techniques Welding In the grooves and bevels

Welding technique used is the form of a cup run. I call it the sliding cup because I've heard others describe it except the term sliding cups. Sliding cups made ​​by placing a TIG torch cups in the groove and then literally slide the cup from side to side and forward!

How to choose a cup size of TIG is to find a cup that will allow proper tungsten stick out without touching the metal tungsten. When using this technique you will most likely use more than one cup size to a single joint. Only need to switch out the cup size while increasing the length of the tungsten rod.

Before actually welding there are a few tips that will make welds more easily! The first is the bevel sand with sanding disk to remove the sign or outline the rough from the cutting slope. This is a great trick to get the cup to slide smoothly. Another common technique used is the square edge of the milling cup so that when sitting on the clumps have a bevel or a flat profile at the contact point. The main thing to remember when sliding the cup is that the cup was always sliding in the groove and should have a smooth surface. If the surface is not smooth you'll find yourself stuck in your movement and the struggle to weld!

Once you start practicing shifting the cup you will find the weld you get better real quick. I still remember when I learned how to slide the cup and began to be so perfect welds. The only thing you can say "I really do". This is one of the welding technique that in just a short amount of practice you will amaze yourself at how well you can weld!

Beginner's Guide to Striking Arc Welding With a Rod

The theory behind the arc to keep happening is, the electric current was forced between the tip of your steel welding rod and welding. If you want to be a successful welder you should be able to strike the arc and keep it going even without thinking about it.

The two most common ways to start your bow by pressing and scratching for steel welding rod. Scratching seems to be the most natural way used by beginners.

Scratching is when you swipe across the steel rod as if you were trying to light a match. After making contact with a steel rod, the arc starts. The real reason just to scratch it to start is so it will not stick to steel because it is moving. The trick then is to find where you want to weld and try to keep the arc going. It takes practice to get the hang of it.

Tapping basically stabbed with steel welding rod you. It's better to start the welding rod you in the right location, but it is more difficult to keep the rod from sticking and keeps the bow. Is a natural reaction after a bow, you'll want to pull it to prevent sticking. The only problem is, beginners tend to pull it too far and lose the arc. This can go on and on and actually quite funny to see someone doing this. But we all need to remember we had at one point as well.

Stick of your welding rod caused by the melting of the steel rod before pulling back a little to maintain the arc. I will not discuss how far it should be of steel as it depends on the type of rod you use and your amperage welding with.

These are the basics and should give an idea of ​​how to strike the arc. Just remember that it takes practice and patience to get good. One day you'll take a stinger and it's all going to click in your head. Will begin to feel almost natural, then you'll know it all comes together.

An Essential Safety Welding Accessories

Whether you are just starting welding, or you have to do it for a while now, it's always smart to review the public safety and the safety items that should be used when welding. There are many items that will be used to keep the body safe and should not be missing from your welding safety equipment.

Aprons are an important item for any welder safety. You need to be protected from dangerous sparks and pieces that could fly out during welding. Make sure that you are getting the right apron for yourself by following some basic guidelines.

First, it is important to know what you like and stick with things that you like and know to work well for you. Some welders apron enjoy shorter than the others. Remember that if you think about safety first, the longer it may be better for you, depending on your project.

You have several options for how to tie your apron or store. Some prefer to buy additional coverage bib apron that wraps around the neck. Others prefer the simple wrap and tie, or a clip around the waist.

The length of the apron and tie usually depends on the comfort of your own or need a welder. If you find that some of the work you will need a little coverage and others need a little more, it may be better to go with the apron again. Because the welding aprons are offered at a great price with the best welder choice has a different apron for different jobs.

Strong leather apron is usually a preference for most welders. Remember that the apron should be strong and sturdy, yet comfortable. This skin is needed to provide the necessary security so that when you weld sparks trigger wont catch them to your apron.

If you're looking for perfect welding apron you might not think about focusing on the relationship than the buckle. Some choose a tie and some prefer the buckle. Depending on how much you'll use it, probably a good idea to look for such things as easy on and off the buckle.

Laser Processing Encompassing Laser Welding

Laser treatment include laser welding, laser cutting, laser drilling and laser systems integration is the most advanced manufacturing technology that is quickly gaining popularity. Whether it's in every industry, military, medical, aerospace engineering, automotive, space propulsion or hi-tech manufacturing, processing with a laser beam having a huge benefit and is the best solution for the needs of the organization and precision laser cutting equipment manufacturers led the accuracy and completeness.

Laser welding is used in a delicate operation as well as in industrial materials processing. Thus the diverse nature of the benefits of laser welding. It is the intense beam of concentrated heat source is directed to melt, and heat or even vaporize the selected area of ​​each type of material. Laser welding is the most modern welding techniques and material causes no distortion. Laser welding is an excellent tool for welding all types of materials.

Laser welding has always preferred to conventional welding because it has a small HAZ (heat affected zone), the penetration depth with excellent precision, consistent joints with minimal distortion due to heating, there is no secondary processing, faster welding rates and high repetition. The selection of lasers for welding depends mainly on the material thickness, type and penetration requirements. There are two main types of beam delivery options are used in cases such as laser welding via fiber optic cable and conventional beam delivery.

Again, precision laser cut is more popular and effective than traditional cutting process. The reason is obvious. This is the accuracy that holds the key to the success of precision laser cutting. In manufacturing industry the quality and accuracy are very important aspects; precision laser cutting is an excellent tool. Benefits of laser cutting too much. It is not only flexible and fast but is also cost-effective mechanism. Again in precision laser cutting of material not in contact with the cutting tool while the traditional method of cutting material having physical contact with the cutting tool.

This physical contact can lead to contamination or distortion of material and equipment; might even get a distorted or damaged while cutting. Precision laser cutting does not cause the problem. Besides the traditional cuts can not be used in all types of materials, but the precision of laser cutting is used for the type of material thickness.

In addition to these services include laser alternative to conventional drilling system is provided with a laser drilling accurate holes with maximum precision and very fast too. If you do not compromise on quality, the laser processing tailored to fit the needs of the industry is the manufacturing industry solutions in the long run.

Metals - Metallurgy of Welding - Style Down and Dirty

Metallurgy is the study of metal. Welding Metallurgy is the study of how welding affects the microstructure of the metal.

Did you know that there are metallurgists who dedicate their lives to just study the carbon steel? So what about all the other metals such as stainless steel, nickel alloys, aluminum, magnesium, titanium, cobalt, and copper alloy?

Metallurgy is a subject of deep and mysterious that it takes a lifetime to really understand the carbon steel is much less all the rest.

So if it is a deep subject, what is the chance that welders have sufficient understanding of metallurgy to become a better welder.

There is good news. And is not that I save a lot of money on my car insurance by switching to GEICO.

The good news is that you do not have to know anything about metallurgy. You just need to understand some basic principles.

It is absolutely essential to understand is that the heat of the weld metal influence. It sounds very simple but profound. Why? Because heat affects different metals in different ways.

When you heat a piece of metal becomes red hot, and then satisfy by dipping in a bucket of cold water, what do you think happened? If you answered "harden" your only partially right. Only a few metal hardened by heating and rapid cooling. Most other metals react totally different.

Carbon and low alloy steel such as 4130, tool steel, cast iron, and some 400 series stainless steels hardened by rapid cooling of the red hot temperatures.

But most other stainless steels, nickel alloys, aluminum, magnesium, titanium, cobalt, and copper alloys will actually soften and lose their heat by heating and rapid cooling of the red.

So what does this mean to your welder?

If you do the welding on the 4130 chromoly, you need to know not to speed up or cool the weld will harden.

If you are welding 6061 t6 aluminum, you need to know that the weld area will soften if it gets too hot for too long, and the power will be lost and never come back unless the full heat treatment can be done.

Welding 301 full hard stainless steel is easy to do, but the heat from the weld microstructure recrystallizes hard work and strength and hardness goes right out the window.

304 welding of carbon steel and chromium can lead to bind and form a chromium carbide weld area if it is too hot for too long.

So you get the picture. The heat affects different metals in different ways.