Safety Precautions for Welding Jobs

Welding jobs are not that easy as you may think; it is a dangerous job because there are lots of risks implicated with it. The UV radiations can cause harm to the eyes, breathing problems because of the fumes, damage to the skin because of exposure to heat, burns etc are some of the hazards which are involved with the welding jobs. Therefore in order to weld safely and completely avoid the hazardous risks you should maintain adequate safety measures. You can check out the steps outlined below in order to have a brief idea about safety precautions during welding:

Examine the equipment: The first thing that you should do before you start the welding process is to check out the welding equipments for wear and tear. Check out the valves and hose of the ppr pipe cutter equipments for any sign of leakages. What you can do is spray the mixture of water and soap on the valves and hoses and ensure that no bubbles are creating out of leaks. In case of leaks, change the damaged part before you being with your work.
Prepare the workplace: See that the workplace where you will be performing the welding process doesn’t have any thrash, flammable liquids or materials which are combustible which can catch fire due to the welding sparks. Open the doors, windows and also turn on the exhaust fan to ensure that there is enough ventilation in the workplace.
Dress Properly: The sparks emerging out of the welding process can damage your skin; therefore it becomes very important to dress properly while you carry out the welding process. Gloves, long sleeve t-shirts, long pants etc form a part of protective wear. Ensure that the clothes which you are wearing are made up of 100% cotton or wool. Clothes made up of synthetic fibers can catch fire easily so avoid wearing them. The loose fitting wrist cuffs and ankle can get in touch with the sparks and can catch fire, so it’s advisable to wear wrist bands to cover the loose fittings.

Proper Weld Preheating is the Key to Preventing Costly Repairs

The need for weld repair in industrial structures can end up costing much additional time and money; time and money which could be saved through proper application of weld preheating during creation of the structure. To further demonstrate this point, it is important to understand the nature of problems which create a need for frequent repair. Some of the most common problems include: cracking, weld hardening, and warped or uneven weld surfaces. Take these and combine them with the workloads which complex industrial structures are exposed to and the potential wear and tear can lead to diminished performance capabilities and eventually failure.

And then what?

Well, it’s time for either another costly repair or replacement. Obviously if there is something which can be done to prevent this it would be well worth considering. That’s precisely what weld preheating technology is designed to do. The process of weld preheating is a proactive method for dealing with these types of problems before they occur. You see, it begins with conditions which originate both during the butt welding machine process as well as the cooling of the welded regions.

To begin with we have thermal stress. Thermal stress is caused when the weld metal starts to cool off and contract, meanwhile the cooler and more static parent metal holds its place causing tension between the two.

The result?

Uneven weld joints, cracking and all kinds of other things which make it more difficult for the weld to hold up under pressure. Over time and use, these imperfections in the weld joints compound regular wear and tear diminishing the strength and the joints integrity. But thankfully, weld preheating can greatly reduce thermal stress by slowing decreasing the heat temperature disparity between the parent and weld metals.

Wire Cutters – What Are They?

One of the handiest tools to have around the home or work place is the wire cutters. These tools are classified as hand-tools used to cut wires made from silver, copper or gold-filled. The type of cutter depends on the blade configuration so there are flush cutters, bevel cutters, end cutters and diagonal cutters. The wire cutter can also be categorized according to its use like the cable or bolt cutters.

Wire cutters are mostly used in jewelry making and those who are doing crafts using wires. There is no better tool than a wire cutter to do precision cutting without damaging what one is doing as well as reach small crevices. In jewelry making, this tool is used to cut specific lengths to make various designs or to trim excess wire. Flush wire butt welding machine are needed when trimming is made as close to whatever piece is worked on. This makes the wire as flat as possible rather than pinched or pointed at the end. Bezel cutters leave a larger pinch on the end of the wire and have its own purpose. End cutters cut off the end of a wire closely but they can only trim wire that is fairly short.

Below are some guidelines when selecting a wire cutter:

o The best type is the flush wire cutters. Though more expensive than the other types, it can be more useful for jewelry making and other hobbyists.
o A wire cutter with spring handle will help lessen hand fatigue.
o It would be good to have different types of wire cutters. Flush-cut pair for smaller diameters and a pair that can handle thicker wires.
o Quality is important for jewelry making thus it is important to have a wire cutter that is reliable and suited for the particular task.

6G Pipe Welder Rigs: What Kind Of Welder Do Pipeline Welders Use?

How could a welder made in 1939 be out on a pipeline today?

You may think that 6G welder is welding those pipe joints up with some fancy computer controlled welding machine, and you’d be wrong in most cases. Good old fashion stick welding like great grandpa did in World War ll is still the dominant process. Yes, the new pipe welding machines have electronic controls and other fancy stuff, and they have aluminum windings – and sure, they are out on the pipeline – mostly Lincoln brand, and the rest are Miller. However, on most pipelines these are stick welding machines.

It is possible that you’ll find a machine that pre-dates WW ll out on a pipeline in 2012. Why and why stick? Stick is easy to transport, set up, and it is tough. Stick welders can weld in a breeze. Other welding processes use a shielding gas, so they can’t weld in any wind. Stick welders don’t break down much – they are so simple. Stick is an extremely strong process.butt welding machine

What about the machines?

Although there are some pretty snazzy modern stick welders out on the pipeline, you’ll also find the Lincoln SA200 Pipeliner. You’ll see some made in the 60s and 50s, and once in a great while, as far back as 1939. Why? The Pipeliner SA200 welders are great machines. Heavy copper windings make for a smooth arc. They are built like a brick porta-potty, so they run and run.

Modern machines are made with aluminum windings. As the windings get warm the electrical resistance increases, so the machine must be adjusted. When the welder takes a break and comes back, they must be adjusted again. An old SA200 with copper windings doesn’t have this problem, so it welds on the same setting all day long, no matter what – they always weld like butter.

Tips For Choosing Welding Electrodes

Electrodes are used during the process of welding as they produce current required for arc welding. They are available in the shape of long rods and they are placed in contact with the tip of the rod. This rod is used for providing a powerful electrical current into the metal. As soon as the electrode touches the metal, the current flows into the metal and creates a dazzling arc. hydraulic test pump

Different welding electrodes are used in the welding process including solid core, flux core and metal core. Welding electrodes are available in a variety. All the variants differ from each other depending on their task and the welding process. As electrodes need to deal with different kinds and ranges of electrical current, they are available with different coatings and sizes depending on the requirements of the welder. It is important to choose the correct welding electrode as it ensures a strong welding process. Listed below are some tips which you can consider while choosing welding electrodes:

It is important to select the right welding electrode. This can be done by taking into consideration, the steel which is to be welded. Do consider the chemical composition, mechanical properties and microstructure of the steel. Also, go through its manufacturing process for reference.
For the best quality welding, make sure you use similar kind of metals. Weld with electrodes which are compatible with the base metal. You can use electrodes which offer same chemical compositions.
Make sure that you choose electrodes which have carbon ranging between.02% to.04% carbon than the metal to which they will be welded. You can use other alloys for compensating carbon reduction.
Use electrodes which provide the metal with sufficient tensile strength and impact resistance. Ensure that you do not overmatch the welds by using additional metal that gives the deposited metal more strength than the weld metal.
Do learn the sizes of arc welding electrodes which are used in welding shielded metal. For this, you can study the AWS (American Welding Society) size guide and numbering system.
Electrodes are commonly rated according to a system which is designed by the American Welding Society. The system uses a letter E and this follows a series of four or five numbers. Do keep in mind that there is a proportional relationship in the case of welding electrodes. The higher is the carbon equivalent; the lower is the weld-cracking potential.

Choosing Between Mechanical Fuel Pump and Electric Fuel Pump

The purpose of fuel pump in an automobile is to deliver fuel from the gas tank to the fuel injector or carburetor at the necessary pressure. Fuel is drawn from the fuel tank and is propelled into the internal combustion engine through a fuel pump where the combustion of fuel occurs with air. Regardless of the external conditions, a fuel pump has to facilitate the delivery of right amount of gasoline from the tank to the engine through a fuel line at a specific pressure. In automobile engines, some fuel pumps are mechanically operated with low pressure fuel distribution, whereas others are electric pumps that push the gasoline to the engines at higher pressure.

Mechanical fuel pumps
Mechanical fuel pumps are low pressure pumps commonly used in old vehicles that use carburetors in engines. They are commonly called as puller pumps because they use suction ability to pull the gasoline through fuel pipe and up to the engine. Typically, mechanical pumps handle engines rated under 450 hp  .pipe welder

Mechanism of operation
Typically, mechanical fuel pumps are driven by a crankshaft which contains a camshaft having a cam lobe that operates a lever on the pump.
The other end of the lever is connected to a diaphragm which goes down as needed to refill the pump chamber.
When the crankshaft spins, each rotation pushes the lever up which in turn pulls the diaphragm down with it. This builds suction in the pump to drag the fuel out of the tank into the fuel chamber.
A spring attached to the diaphragm will bring the diaphragm up back to its normal position thereby forcing the fuel from the pump chamber into the carburetor through outlet port.
When the carburetor is full, no fuel is allowed from the pump chamber into it until the fuel is consumed by the engine and carburetor is ready to accept more gasoline.
The pressure at which the fuel is expelled from the mechanical pump is typically limited between 4 to 10 psi.
Common issues
The common issues of a mechanical fuel pump include leakage of fuel into the crankcase due to ruptured or leaky diaphragm, vapor lock in the pump, fuel pressure drop, faulty diaphragm spring etc.
Electrical fuel pumps
Electric fuel pumps are designed for boosted engines such as fuel injection that require higher flow rates and pressure outputs. Electric fuel pumps deliver gasoline under high pressure from the gas tank to the injectors, typically ranging between 30 to 200 psi. Electric pumps are pusher pumps because they generate positive electrical pressure to push the fuel in fuel lines to the engine. The pumps are typically in-tank or externally mounted and come in variety of pumping mechanisms such as positive displacement pumps, roller vane pumps or turbine fuel systems.

Increase the Effectiveness of Your Strimmer by Fitting Robust Brush Cutter Blades

If your garden needs a brush cutter or strimmer, then naturally you will find the best one you can afford. You’ll look for a model that suits both you and your garden. If you’re going to be using it regularly and for considerable periods of time, it needs to be comfortable to hold and use. If you need to cover large areas of ground, then you need something that doesn’t need an electric cable or power supply. When using it you will need to use good quality, robust and hard wearing Brush cutter blades.

It needs an efficient blade to cut the grass, weeds, scrub, brush and bramble. There are a number of different designs of brush cutter blades available, from cheap nylon blades which are quick to snap, to tough cable reinforced blades which can cut through even the toughest scrub like a hot knife through butter. The main job of it is to help you to trim and maintain your garden, from simple tasks such as edging your lawn, to more heavy duty tasks such as clearing badly overgrown areas covered in brambles and tough weeds. ppr pipe cutter

Your heavy duty strimmer should come with some blades, although these may not be of good quality. Often gardeners prefer to buy additional blades because there is nothing worse than the blade snapping half way through a task and not having a replacement to hand, thankfully with the new and innovative product. The Decimator is a super robust, cable reinforced brush cutting blade which is suitable for use with petrol strimmer’s.

The Decimator is one of the most robust and powerful brush cutter blades available on the market today. It is easy to fit the blade to your existing brush cutter and you will be blown away by the results. It will cut through anything in its path with ease. If you’re unsure of how to replace the blade on your brush cutter, then it is always wise to refer to the operating manual for guidance. Additionally there may also be online tutorials on how to change the blade which you may find beneficial.