Do not allow the electrode to come in contact with your skin or clothing to avoid burns. Do not wear wet gloves or gloves that are fraying or tearing. Do not operate a welder on wet insulation. Do not weld without sufficient hearing protection.
Health hazards from welding, cutting, and brazing operations include exposures to metal fumes and to ultraviolet (UV) radiation. Safety hazards from these operations include burns, eye damage, electrical shock, cuts, and crushed toes and fingers.
Be sure the welder is properly installed and grounded. Never weld without adequate ventilation. Take proper precautions to prevent fires. Protect your entire body with fire retardant clothing, shoes, and gloves.
Some examples of material combinations that cannot be fusion welded successfully are aluminum and steel (carbon or stainless steel), aluminum and copper, and titanium and steel. Nothing can be done to alter their metallurgical properties. That leaves changing your process.
A: You can receive a shock from the primary (input) voltage if you: touch a lead or other electrically "hot" component inside the welder while you have your body or hand on the welder case or other grounded metal with the power to the welder "on."
One of the most common issues in welding is slag inclusion – the small particles of flux that become trapped in the weld metal. Prevent it by using the correct current and voltage, and by making sure your flux-coated consumables are well-maintained and in good shape.
It should be remembered that welding over weld metal is actually a very common occurrence. Multi-pass welds after all are manufactured by welding over weld metal! There are also many accepted procedures in which welds overlap.
TIG welding is the hardest form of welding to learn for a variety of reasons. The process of TIG welding is slow and takes time to get used to as a beginner. A TIG welder requires a foot pedal to feed the electrode and control the variable amperage while maintaining a steady hand at the welding torch.
(1) fusion zone, (2) weld interface, (3) heat-affected zone, and (4) unaffected base metal zone. including welding process, metals being welded (e.g., identical metals vs.
A torch angle is typically 70 to 80 degrees (10 to 20 degrees from perpendicular to the base metal). The filler metal is typically held at 20 degrees from parallel to base metal.
Visual Inspection of the Project
Welders must inspect all materials that will be used in the project for damages. Even a small scratch may become a cause for a mistake that will put the project on hold.
Prolonged exposure to welding fume may cause lung damage and various types of cancer, including lung, larynx and urinary tract. . Health effects from certain fumes may include metal fume fever, stomach ulcers, kidney damage and nervous system damage.
The rule of thumb assumes you need to achieve full strength. This means that exceeding the size specified would increase weld strength, but not the connection strength. Meaning welding anything bigger would be total waste with no added benefits.
Also known as the downhand position, the flat position is the easiest of all the welding positions. A flat position is the common type of weld. It is the first weld that beginners learn. In this position, you are not welding against gravity.
Use an audible signal such as “cover” to indicate to others that you plan to strike an arc. 18. If an electrode sticks, try to twist it free. If twisting fails to free the electrode, release the electrode from the electrode holder.