Posts Tagged ‘weldings’

Setting up a welding shop: The basics

Wednesday, October 5th, 2011

Now that the economy has hit a low, and unemployment has risen, a lot of people or looking at alternative means of income. Granted, a lot of people will find new jobs somewhere, but others will be forced to create their own job by becoming a small business owner, and finding their “niche”. One of the “niche” areas that many people are finding wide open is the need for small welding shops in their area. Of course, many areas are served by large machine shops with $100.00 an hour rates plus materials. However, the average person may not find that a reasonable charge to repair a small household item or to have a small project fabricated, since a small project could easily run into the thousands of dollars. There is a clear need for small repair shops that can handle small jobs, without incurring the same kind of expense that a customer would find at a large machine shop. Some machine shops will actually turn down work if it doesn’t meet a minimum dollar amount. If you perceive a need in your area for a small shop that can customize small repairs, and engineer small projects for a customer, then you may be thinking about what you will need to get started.

Outside of the obvious need for a welder, you will need to see how many welding processes you can afford to have, and you must evaluate the space you have to have them. TIG welding is probably the most expensive process to have in your shop, but it is also the most lucrative, especially when it comes to welding aluminum. MIG of course seems to be the staple found in almost every welding shop. Stick, is the preferred choice for mobile repairs. A plasma cutter is popular for cutting metal, but is not a requirement for many small shops, as long as there is an Oxy/Acetylene setup available. Each process carries with it a demand for space, money, and skill. Be sure to evaluate which processes best fit your operation best in the early planning stages so that you can go after customers that have needs that you can fill with the processes you can provide.

Shop location is another consideration. In a rural setting a small welding shop may be a small pole barn or even a home garage. In more urban areas, it may be a small store front with a side roll up. Or even, the welding operation may be completely mobile with an Engine drive welder providing both welding power and electrical service to the job site. Whatever the location, or arrangement, a well equipped, convenient to access shop and operation is critical to having credibility. Keep in mind legal requirements for insurance, business license and applicable permits and general code requirements when in the planning stages as this will require a significant amount of capital that is often left out of the business budgets when it comes to writing a business plan and assigning an overhead cost to a shop location.

Well-equipped shops often bring customers back for more business. Even if you don’t have the money for the most expensive tools, used, or lower end welding and machining tools can suffice. If a customer goes into a shop and sees maybe one name brand welder, and an oxy acetylene torch, it may not convey a lot of confidence in the customer’s mind. Rather, most customers like to see a fully equipped shop with the expected pieces, like a band saw, chop saw, stationary grinder, hand held grinders, full length floor drill, jacks stands, welding table, small lathe, vises, clamps etc. Especially don’t forget the all important wrench sets, pry bars and hammer sets. As long as these work, name brand won’t be important to the customer. While it may not be possible to sink a chunk of change into all these at once, prioritize your purchases and leverage your buying power at estate sales, and discount tool places so that you can get the most shop “bling” for your money.

Overhead costs are the most manageable when they are in the planning stages. When you are planning for them, then, you are most likely to bid correctly. You may not win every bid, but having a realistic dollar figure for what it takes to operate the shop by the week or by the hour will save you a lot of heart ache and worry. Shorting yourself on bids by forgetting that monthly insurance premiums are due, and the need to upgrade equipment to finish a job won’t help you stay in business, though it may bring you a job you can’t afford to finish. This is never good and should be avoided if at all possible.

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How do I choose the right welder for me?

Monday, August 15th, 2011

If you’ve been thinking about buying a welder lately, then you’ve been giving some consideration to which is the best to suit your needs. If you are like most people, you may be confused by the wide array of welders on the market, and even likely by the terminology. You may be wondering what all those foreign sounding acronyms mean: SMAW,GTAW and GMAW. And you may hear terms like MIG, TIG or Stick thrown around…Without a point of reference these terms may just simply float by making your choice even more difficult and confusing. There are also many confusing numbers floating around out that with reference to welding. For example: ER6010, ER 70S-6, or even RG-60. Even the organizations surrounding and governing welding have a confusing array of Acronyms that they use. Ever hear of the AWS or the ASME? What does it mean to hold a certification, how do you get one and is it really important? Yes, there’s a lot to take in at the beginning, but after some of the confusing terms are sorted out, you’ll eventually be able to think your way through what type of welder you want for your next purchase. I’ll try to simplify and boil these down to the most basic and accurate definitions possible in the next few blogs for the most common welding terms. Hopefully you will be a more knowledgeable, informed and more comfortable purchaser. Even, though you may already know what type of welder you want and have many years of experience, there may be a thing or two you can still learn about welding and welders.

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Concentration as a key factor in welding:

Monday, June 27th, 2011

Have you ever imagined how the welding process actually works? Have you ever actually been involved in performing one? Do you aspire to become a professional welder? Firstly welding is a process or an art where two or more metal work pieces are joined together with the help of a molten solution which solidifies and forms a bond between them once it cools down. The process as such involves high electricity and intense heat transfer in order to generate the molten solution which is the basic essentially of joining.

Welding is a very easy process to learn and adapt to. It all comes down to mastering the art and making perfect joints which comes over a period of regular practice. The electrodes involved when touches the metal creates an arc which allows the molten solution to precisely hit the right areas to form a necessary bond. It is very important for us to control the arc in order to do so whatever is mentioned above. Thus concentration is indeed the key factor in performing perfect welding job. The more you concentrate the more control you can get in doing the job. Practice in deed makes a man perfect and efficient.

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Electro slag welding:

Thursday, February 24th, 2011

Electro slag welding in short is known as ESW. It is a process in which an arch is utilized to heat the slag. This slag is the repressed by a conductive slag. It is mainly used for combining steel pieces in a vertical position unlike horizontal position that is followed in traditional welding processes. This doesn’t mean electro slag is an arc welding process. It is just that an arc is lighted during the initial stages of the welding procedure. Thus there is no arc being ignited before the welding process. The width perimeter of the welding procedure is set around 30”.

The excessive heat generated facilitates the process and thus grants this kind of unimaginable access. Various distinct electrodes are put to use in this electro slag welding procedure and utilized in an efficient manner that expedites the procedure as a whole.

It became the most famous procedure for welding in 1970’s. It was intended to fuse metals of high thickness. The technique was used to manufacture parts for buildings, bridges, ships and other heavier vessels etc. The process can combine the thickest of metals to make sturdy and strong components. Thus quality of products manufactured using such welding techniques increased in sky rocketing rates. The electrodes used can be utilized to finish bonds in a single instant. The high temperature generated is detained at the joints for several hours while gas froths are set aside to flee from the pool sooner the bond cools and solidifies.

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Why Not Go For Cheap Welders?

Thursday, February 10th, 2011

Most industrial engineering processes have a wide range of application in various industries. Welding is one of the industrial processes which too have a wide range of application as it may be used in the villages by farmers and also in manufacturing companies. So we can see how widely the welding technique is used.

Now seen the popularity and importance of welding it is also necessary to know what kind of welder one must buy. The manufacturing and the high level industries will always go for branded welders as cost won’t be an issue for them and they will be focusing upon the quality more than it. The problem mainly occurs with the farmers, individuals and small welding shops where due to their economic status they have to think about the cost of the welders they purchase. While getting a welder one has to consider a variety of factors like what will be his purpose, where he will be using it, does it need to be portable and of course cost etc.

Most people will actually get lured by the number of cheap welders which are available in the market and when they use it for the first time they will feel they have bought something worthy at a cheap rate. Only if one uses welding occasionally can these cheap welders be worthy, as if someone is going to be frequently using it, you will find quality deteriorates and also they do not last long. The worst thing is you cannot even get it replaced as the product is not of any reputable brand and because of the cost you are not even in a position to argue with the vendor. So if you are thinking of welding on the long run going for reputable brands will be of much use than these cheap vendors’ products.

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What’s the use of welding?

Friday, December 31st, 2010

Modern welding procedure is engaged in the construction of several products. Ships, buildings, bridges, and entertaining rides are engineered through the process of welding.

Welding is often used for fabricating the machines that are further used for manufacturing/developing newer products. Such technique of joining metals/alloy materials has made it possible for airplane manufactures to meet the design demands strength to weight ratios for both commercial and military aircrafts.

The exploration of space would have not been possible without the aid of modern welding techniques. From the commencement of early rockets to today’s aerospace industry welding has played its major role(s).

On an average each day a new method of weld is thought out and new styles are also thought out so as to make the process of weld easier and user-friendly. Many of such improvements have improved our lives and have made our lives easier too.

The idea of weld is extensively used in the fabrication of automobiles, farm gauges, home appliance, computer components, mining equipment and earth moving machineries. It is also used for fabricating railway equipments, furnaces, air conditioners and thousands of other products that we use in our day to day lives are joined together by some type of welding techniques and methods.

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Know about welding power supply:

Tuesday, November 30th, 2010

Power supply, it is essential for all machines, and in welding it is definitely needed because it provides electric current to perform welding. Welding is a process that requires high current around 80 amps. Constant current and constant voltage machines are the two classifications in welding machines and a constant current machine vary its voltage and the constant voltage machine vary its current of their outputs in order to maintain a steady current and voltage respectively. The modern welding machines use internal combustion engines to convert mechanical energy into electrical energy and you can build a switching power supply with the advent of inverters known as inverter welding units.

The infineon IGBT welding machines are more efficient and have better control than other types of non-inverter welding machines. And with these machines, the users can produce the desired voltage or current. This machine has power control features and overload protection features so that you need not worry about high voltage or current problems.

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Types of tools required for welding:

Friday, November 26th, 2010

If you have a welding area in your workshop you can think of creative ways of doing a project. Working with metal can bring in durability and stability in your creations. It is very easy to learn the art of welding if there is proper equipment. Knowing about tools helps in starting right away.

Safety Gear:
Welding can lead to injury, burns and blindness. To avoid this, it is important that welders purchase all the necessary safety equipment before you obtain any tools for your home workshop.

Here is a list of the safety gear that welders should wear before welding:
• Always wear 100% cotton or denim pants
• Leather apron
• Lightweight welding jacket
• Heavy duty welding gloves
• High top leather shoes
Safety glasses
Welding helmet

Welding Rig:
Two major types of welders available are torch welders and arc welders. Torch welders cannot be used by beginners as it involves open flame which can cause hazardous combustion if improperly used. Arc welders are available in different types.

Metal Cutter:
It is important to have tools that can cut metals. Different types of carbide saws, plasma cutters and torch cutters are available.

Metalwork Accessories:
If a person wants to finish metal, a variety of accessories are necessary. Some common tools a welder will require are: a ball peen hammer, a grinder, a buffer, a set of metal files, a chisel and a chipping hammer.

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Factors to consider while choosing welding attire:

Thursday, November 25th, 2010

If you want to maintain safety during welding, wear the correct attire to indulge yourself in a protected welding process. It is important that you choose correct welding attire before welding. Following tips will help you in selecting right attire.

• Protect your eyes from sparks or fumes. Always wear safety glasses while welding.

• Buy flame resistant clothing. You can find this type of clothing at hardware stores or where you bought your welder.

• Wear high-top leather boots.

• Buy a pair of leather gloves that have a long cuff extending to the elbow.

• Buy a welding helmet or hood that is comfortable and not too heavy to wear. Your shield shouldn’t be too dark for you to see out or too light to keep the rays from the welder from damaging your eyes.

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A note on inverter welder:

Tuesday, November 16th, 2010

An inverter welder provides high frequency current for welding. An inverter welder weighs less and consumes less electricity than a traditional welding power supply.

Advantages of inverter welder:

Inverter welder requires a very small transformer. It can convert incoming current to suitable welding current.

Inverter welder can run on 115 VAC household current due to lower input voltage.

Inverter welders are available in reduced size and weight where as traditional welding power supply would be too bulky or consume too much power. They are commonly used in machinery maintenance facilities and automobile repair shops. Farmers are also moving to portable, lightweight units to make on-site repairs.

• Due to higher frequency of the output current, an inverter welder produces a smooth arc when welding. Computer software constantly monitors and adjusts current and voltage during the welding process. Welding supplies like electrodes, welding wire and shielding gas can last longer than traditional welding power supply.

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