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when b pressure welding is required?
B-Pressure welding is a specific certification which signifies the most elite welders in the industry. B-Pressure welding is required when more stringent techniques to welding are required. Many government agencies will only permit B-Pressure welders to perform certain tasks.
What is difference between seam welding and spot welding?
The only difference between the two is that projection welding requires preparation of the joint members in the way of adding a preformed dimple or projection. Spot welding is used without such preparation to the joint members. it's just heat and pressure.
What is the difference between fusion welding an resistance welding?
Fusion welding is just any welding process which inhibites the phase trasition from solid to liquid and then back to solid state, while electric resistance welding is based on purely ohmic heating of the different parts, this heat will create fusion of the metal. So; Electric resistance welding can be said to be a type of fusion welding, but not the other way around.
What is the welding cert roster code for welding?
roster welding
Explain seam welding and percussion welding?
Seam welding- resistance welding process involving the use of (normally) copper or copper alloy rollers to simultaneously pass high current (10^4 amps and usually in pulses) and apply pressure to bond a lap seam between two pieces of sheet metal. Percussion Welding- arc welding process involving the use of a capacitor bank to bond on the order of milliseconds. A high current electric arc is developed between the items to be joined, and the items are rapidly accelerated together.
What is the difference between pressure and fusion welding?
Pressure welding uses pressure to create the bond between two materials, while fusion welding relies on melting the materials to create the bond. In pressure welding, the materials are pressed together under high pressure, while in fusion welding, the materials are melted together through the application of heat.
when b pressure welding is required?
B-Pressure welding is a specific certification which signifies the most elite welders in the industry. B-Pressure welding is required when more stringent techniques to welding are required. Many government agencies will only permit B-Pressure welders to perform certain tasks.
What is high pressure gas welding?
h
What is Limitation of gas welding?
One limitation of gas welding is the limited range of materials for which it is suitable, as it may not work well with certain metals or thicknesses. Additionally, gas welding can result in slower welding speeds compared to other methods like arc welding. Maintaining the proper gas pressure and flow during gas welding can also be challenging.
In Gas tungsten arc welding what is the gas pressure in overhead position welding is it higher or lower then flat and vertical i.e. 15-25CFH?
lower
What are the best techniques for welding ABS plastic?
The best techniques for welding ABS plastic involve using a hot air gun or a plastic welding kit to heat the material and create a strong bond. It is important to carefully control the temperature and pressure during the welding process to ensure a successful weld.
What is different between fusion and non fusion welding?
Fusion welding joins materials by melting them together, while non-fusion welding joins materials without melting them. Fusion welding includes processes like MIG, TIG, and arc welding, where a filler material may be added. Non-fusion welding methods, such as friction welding or ultrasonic welding, rely on pressure or friction to create the bond between materials.
How does cold welding stainless steel differ from traditional welding methods?
Cold welding stainless steel differs from traditional welding methods in that it does not involve the use of heat to join the materials. Instead, cold welding relies on pressure to create a bond between the stainless steel surfaces. This process can result in a stronger and more precise weld, with minimal distortion and heat-affected zones compared to traditional welding methods.
What are the key considerations to keep in mind when performing plastic welding on ABS materials?
When performing plastic welding on ABS materials, it is important to consider factors such as the temperature of the welding tool, the pressure applied during welding, the welding speed, and the cleanliness of the materials being joined. Additionally, ensuring proper ventilation and using appropriate safety equipment are crucial to prevent exposure to harmful fumes.
Which welding is similar to projection welding?
Seam welding is similar to projection welding as both processes involve the use of electrodes to apply pressure and heat to weld metal parts together. In seam welding, a continuous seam is created by overlapping metal pieces, while projection welding focuses on specific raised areas or projections on the workpieces. Both methods utilize electric resistance and are effective for joining materials in various applications.
How the chamber is created in dry welding of underwater welding process?
In dry welding for underwater welding, a hyperbaric chamber is used to create a dry, pressurized environment for the welder to work in. The chamber is sealed to prevent water from entering and is pressurized to balance the external water pressure. The welder enters the chamber through an airlock system and performs welding tasks with the help of specialized equipment and gas supply systems.
What is the difference between arc welding and resistance welding?
Arc welding uses an electric arc to melt and join metal pieces together, while resistance welding uses heat generated by the resistance to electric current flow between two metal pieces to join them together. Arc welding is more versatile and can be used for various types of metals, while resistance welding is more suited for high-speed production and is commonly used in automotive and appliance manufacturing.
