Posts Tagged ‘Gas Welding’

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Welding – Power Generating Equipment

Thursday, February 4th, 2010

Welding machines plays vital role in various industries. A method of combining two or more materials is termed as welding. Most part of the machines is joined by this kind of process. The diesel generator is used for producing electricity. Let us see the diesel generators and welding instruments in detail.

Diesel Generator: A part of diesel engine, generator, and supporting devices such as control systems, starting systems, circuits, base, silent generator and canopy are grouped to form a diesel generator. The silent generator is the main part of diesel generator because it is portable in size, easy to use and set up, user friendly. It is used in homes, industries and offices. In today’s market two types of silent diesel generators are selling:

Types: 5.0KW – 6.5KW and 10KW – 50KW diesel generators

  • 5.0KW – 6.5KW: The three classification of 5.0KW – 6.5KW are economy, super and deluxe generators.Economy: It provides ATS Switch, Pre heater, Remote control and UL panel.

    Super: Super provides throughput for 8 hrs, 6500W, 9 HP diesel engines, and full power panel.

    Deluxe: It is a fuel save, low noise, actions are controlling by remote system.

  • 10KW – 50KWIt is classified into 15000W, 18000W, 22500W, 33500W and 40000W.

    Its characteristics are power saver, fuel saver, produce low noise, it can
    be used in construction and remote areas.

    The peculiar feature of 22500W is dynamic current battery, 1 year or usage of 1000 hours warranty.

Welding:

  • Various forms of process are involved in welding, namely arc, gas, resistance, energy beam welding, Metal inert gas, Tungsten inert gas, Shield metal arc welding.
  • MIG is also termed as feed welding.
  • Gas welding involves the process of oxyfuel welding. In arc, power supply is important. It may be either direct or alternating current.
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Posted in Arc Welding | 1 Comment »

Oxyacetylene Welding Overview

Wednesday, February 3rd, 2010

Oxyacetylene is also known as gas welding. The technique used is to mix two gas components namely oxygen and acetylene in an equal ratio and with the help of hand-held torch or a gas blow pipe a humid flame is produced with the temperature being around 3,200 degree Celsius. To adjust the excessive outflow of oxyacetylene flames change the volume of mixing ratio of two gases from oxygen to acetylene. The settings that are used for adjusting flame are neutral, oxidizing and carburizing.

As the ratio of mixing the gas is equal welding are generally done in neutral flame setting. In the second type of setting the outflow of oxidizing flame is obtained by increasing the flow rate of oxygen. And in the third setting carburizing flame is obtained by increasing the flow rate of acetylene.

As the amount of heat generated in Oxyacetylene welding process is high, it is best suited to weld the steel. The other gas components such as propane, hydrogen and coal gas are been used to join the lower melting points of non-ferrous metals and it can also be used for brazing and silver soldering. In this welding technique as the gas components are stored in steel cylinders at a specific pressure the equipments are friendly to handle and easy to use.

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Posted in Gas Welding | 1 Comment »

Things to Remember While You Use Oxy/Acetylene Torch

Tuesday, December 29th, 2009
  • To check all the connections before firing the torch.
  • Don’t stand in front or behind of regulator when opening the cylinder valve.
  • Keep away your welding cylinder while you weld.
  • Turn off cylinders immediately when the torch flashes back.
  • Use a striker when you lighting a welding torch.
  • Never leave welding torch valves open.
  • Do not carry welding cylinders without the caps in place.
  • Close welding valves on empty cylinders.
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Posted in Gas Welding | 1 Comment »

Precautions in Confined Spaces While Welding Or Cutting

Thursday, December 17th, 2009
  • While welding or cutting in confined space, the space should be cleaned, ventilated and tested during the welding operation.
  • The way of entering a confined space, should be quickly removing employee in case of an emergency.
  • When arc welding in a confined space is to be suspended for any substantial period of time all electrodes should be removed from the welders and the machine shut off.
  • When gas welding or cutting in a confined space is to be stopped for any substantial period of time the torch valves should be closed and the machine shut off. The welding torch and hose shall be removed from the confined space or disconnected from the gas supply during welding. Before re-entering in confined space atmospheric tests shall be made.
  • Check whether hoses and connections are free from leaks.
  • When gas welding or cutting in a confined space, such as pipe line, compartment, tank or container, check to be free from explosive vapors or any danger of explosion.
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Posted in Welders | 7 Comments »

Gas Welding Torch Types

Monday, December 14th, 2009

A gas welder fuses metals by mixing oxygen and fuel gas. There are controls provided in the welder over the proportions of the gases and amount that should be burnt up. The torches have two needle valves. One is used to control the amount of oxygen that has
to flow. Another valve helps us to control the flow of the fuel gas.

The torches are of two types;

  • Low pressure
  • Medium pressure

A low pressure torch is otherwise called as an injector torch. In this torch the fuel gas pressure is less than or equal to 1 pound per square inch. Oxygen pressure is anywhere between 10-40 pounds. This depends upon the size of the tip of the torch.

A medium pressure torch is otherwise called as a balanced pressure torch. Sometimes it is referred to as an equal pressure torch. This is primarily because the pressure of fuel gas and oxygen are equal.

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Posted in Gas Welding | 4 Comments »

Benefits of Gas Welding Machines

Wednesday, November 25th, 2009

With the use of a heat source if you are about to make two metals fuse then it is called as welding. From time immemorial welding has been in practice in someway or the other. Later to accomplish this electricity or gas has been used to produce heat. But gas is the first type of heat generator that has been used well before electricity. Even till this date gas welding is popularly used. It has the capability to heat, braze, solder, cut and weld. These activities can be performed with just a single source of heat. Here are some of its well known benefits;

  • They are cheap to invest and to maintain.
  • It is capable of more than its counterpart.
  • It is a great source for melting and bending too.
  • It is the most popular source of generating heat.
  • It is used by almost every professional shop. This is due to its inexpensive and wide range of applications.
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Posted in Gas Welding, Welders | 1 Comment »

Safety Tips While Performing Gas Welding

Thursday, November 12th, 2009

Science has grown at an immense rate. This has enabled us to lead a luxurious life with machines to do almost all the difficult tasks for us. The same machines that are of great help for us turn out to harm us when we do not use them properly and maintain them in the right manner. Welding as we all know is one of the hazardous jobs that man has ever created. Presence of mind is very vital to be out of harm while welding. Small errors can be very deadly in this profession.  Gas welding can be done in a safe manner if you follow the below listed suggestions;

  • Keep yourself away from the regulator when you open a cylinder.
  • Choose a proper tip for your gas cylinder.
  • Torch cannot be used as another thing than a torch.
  • Maintain spare hoses to replace when your cylinder’s hose is not working.
  • Gas cylinder valve’s opening and inlet nipple should be clean inside
    out.
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Posted in Gas Welding | 1 Comment »

Oxy-Fuel Welding: Safety Procedure

Monday, October 26th, 2009

Welding of any type is a high risk job. Gas welding in particular requires more safety precautions. Here are some safety procedures that need to be taken care of while performing gas welding.

  • Always sport a helmet that covers your face thoroughly. Your face and eyes are
    the most important part of your body. They are most sensitive.
  • Always store oxygen and acetylene separately.
  • Make sure the equipment is chained tightly.
  • Check if the place you are about to work has a fire extinguisher in place.
  • Cylinders should be moved around and stored with their caps tightly on.
  • If you are using a cylinder, be attentive and remember to close the cylinder
    after use.
  • Apron, leather gloves and other protective gears should be worn at all times when performing gas welding.
  • Workplace should be always from dense human activity.
  • The place should be well ventilated.
  • Be alert and look for odors of fuel gases.
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Posted in Gas Welding | 6 Comments »

Rules and Safety While Performing Gas Welding

Friday, October 9th, 2009

Welding is a risky occupation. It may lead to serious injuries or even loss of life if performed without proper care. Follow the below instruction to be safe while welding;

  • Never forget to wear welding helmet and eye gears.
  • Store gas cylinders separately according to their type.
  • Check for leaks or damages on the gas cylinders.
  • Store the cylinders in a well ventilated place.
  • Follow the procedures to turn the system on and off as given in the instruction manual.
  • Equipments should never be exposed to grease or oil as it bears the risk of fire accidents.
  • Always keep yourself protected by wearing leather gloves and jacket.
  • Store the cylinders in a secluded place away from people and clothing.
  • Ensure that you work in a area which is equipped with a fire extinguisher.
  • Make sure you move a cylinder only with the cap.
  • Work in areas that devoid of objects that might get burnt.
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Posted in Welders | 1 Comment »

Precautions To Be Taken While Gas Welding

Monday, August 17th, 2009

Main Hazards of gas welding:

  • Misuse of oxygen
  • Backfires and flashbacks
  • Gas leakage due to hoses, values and other equipment
  • Repairing tanks or drums which contain flammable materials
  • Handling lighted blowpipe carelessly can cause injury to the user or others.
  • If blowpipe is used close to combustible material it can result in burns.

Lighted blowpipes:

By following these methods you can prevent injury caused by lighted blowpipes:

  • Always wear protective clothing, safety helmets, gauntlets while working
  • Keep hoses away to prevent heat, sparks or hot spatter
  • Work in a safe area
  • Shut off the blowpipe when not in use

Following these precautions can prevent fire:

  • Always keep fire extinguishers close to your work place
  • Ventilate space

Following measures can prevent leaks:

  • Hot metal or spatter should not fall on hoses
  • Keep the equipments in good condition
  • Make sure that equipments are free from faults and leaks
  • Handle cylinders carefully
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Posted in Welders | 4 Comments »

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