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The only way to prevent parts from being magnetized during resistance welding is by using the process of magnetic shielding. With the shielding process, objects are surrounded with material to generate a flow that avoids the opposite poles from becoming magnetized.
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Why does a steel ship become magnetized as it is constructed?
A steel ship can become magnetized during construction due to the magnetic fields generated by electric currents used in welding and other processes. As the steel cools down in the presence of these magnetic fields, it can retain some magnetization.
What size welding leads are required to carry 300 A a distance of 9o ft. (27.4 m)?
To carry 300 A over a distance of 90 ft (27.4 m) without significant voltage drop, you would need at least #2 AWG welding leads. It's important to have the proper size leads to minimize resistance and prevent overheating during welding operations.
What is the advantages of postheating during welding?
Basically to prevent the weld and metal from cooling down too quickly which can damage or destroy it.
Why is argon used as a gas in welding?
Argon is used in welding because it is an inert gas, which means it does not react with the molten metal during the welding process. This helps prevent oxidation and other impurities from forming in the weld, resulting in a stronger and more durable bond. Argon also provides a stable arc during welding, making it easier to control the welding process.
How hot is metal after its welded?
The temperature of metal after welding can vary depending on the type of metal and welding process used. In general, the metal can reach temperatures over 1000 degrees Fahrenheit during welding. It is important to allow the metal to cool down slowly after welding to prevent it from warping or cracking.
How and why is argon used in welding?
Argon is used in welding as a shielding gas to prevent oxidation and improve the quality of the weld. It is inert, which means it does not react with the weld material or electrode, providing a stable environment for the welding process. Argon also helps to stabilize the arc and minimize spatter during welding.
What are welding sparks called?
The sparks generated during welding are called welding sparks. They are tiny fragments of molten metal that separate from the welding material or workpiece due to the intense heat generated during the welding process.
Can you weld 17-4ph stainless steel?
Yes, 17-4 PH stainless steel can be welded using standard welding techniques such as TIG, MIG, and stick welding. However, it is important to use the appropriate filler metal and take precautions to prevent cracking during the welding process.
What can be done prevent heat build up during welding?
Some preventive measures include : back step welding : pausing between each weld bead : applying a heat sink close to the weld : using smaller electrodes.
What can be done to prevent heat build up during welding?
Some preventive measures include : back step welding : pausing between each weld bead : applying a heat sink close to the weld : using smaller electrodes.
Why silicon dioxide is a suitable for welding blankets?
Silicon dioxide in the form of silica fabric is suitable for welding blankets because it has a high melting point, good thermal insulation properties, and resistance to sparks and splatter generated during welding. It helps protect surrounding areas from heat, sparks, and molten metal while providing a safe barrier for workers and equipment during welding operations.
Why need to use argon gas for stainless steel welding process?
Argon gas is used in stainless steel welding to provide a shielding atmosphere that protects the weld from contamination by oxygen and nitrogen in the air. This helps prevent the formation of oxides and nitrides in the weld, which could compromise its strength and corrosion resistance. Argon gas also helps promote stable arc characteristics and efficient heat transfer during the welding process.
