Plasma arc cutting is a metal cutting process that uses a high-speed jet of heated gas to cut metals. It works by forming an electric arc from a torch nozzle to the metal surface, turning the gas into a plasma that melts the metal. The plasma is hot enough to melt the metal and moves fast enough to blow the molten metal away. It can cut a variety of metals quickly at a lower cost than other methods but requires more expensive equipment and operator skill compared to oxy-fuel cutting.
High-frequency welding is included in a group of resistance welding process variations that use high-frequency welding current (1kHz to 800kHz) to concentrate the welding heat at the desired location.
The heat produces the coalescence of metals, and an upsetting force usually is applied to produce a forged weld.
High-frequency resistance welding is an automated process and is not adaptable to manual welding.
High-frequency resistance welding was developed during the late 1940s and early 1950s to fill the need for high-integrity butt joints and seam welds in pipe and tubing.
But today the process is also used in the manufacture of products such as spiral-fin boiler tubes, closed roll form shapes, and welded structural beams.
A wide range of commonly used metals can be welded, including low-carbon and alloy steels, ferritic and austenitic stainless steels, and many aluminum, copper, titanium, and nickel alloys.
HFW is based on two main electrical phenomena
Skin effect
Proximity effect
One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Ultrasonic Welding has higher strength compare to normal used welding, micro ultrasonic welding using composite film,effect of Ultrasonic vibration enhance Friction stir welding,Ultrasonic spot welding of airo space aluminum alloy
High-frequency welding is included in a group of resistance welding process variations that use high-frequency welding current (1kHz to 800kHz) to concentrate the welding heat at the desired location.
The heat produces the coalescence of metals, and an upsetting force usually is applied to produce a forged weld.
High-frequency resistance welding is an automated process and is not adaptable to manual welding.
High-frequency resistance welding was developed during the late 1940s and early 1950s to fill the need for high-integrity butt joints and seam welds in pipe and tubing.
But today the process is also used in the manufacture of products such as spiral-fin boiler tubes, closed roll form shapes, and welded structural beams.
A wide range of commonly used metals can be welded, including low-carbon and alloy steels, ferritic and austenitic stainless steels, and many aluminum, copper, titanium, and nickel alloys.
HFW is based on two main electrical phenomena
Skin effect
Proximity effect
One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Ultrasonic Welding has higher strength compare to normal used welding, micro ultrasonic welding using composite film,effect of Ultrasonic vibration enhance Friction stir welding,Ultrasonic spot welding of airo space aluminum alloy
This project are for understanding the working, advantages and disadvantages of plasma arc welding, the viewers can also use it for their needful purpose.
The cold welding process is one of the major welding processes that commonly used in engineering applications. There are several sub-categories of cold welding processes.
Thanks for the colleagues who give this slides to publish.
Explosive Forming is a manufacturing technique that uses explosions to force metal into dies and molds.
The explosives are typically either detonated underwater or in direct contact with the materials.
The technique is useful for short production runs of conventionally difficult-to-manufacture parts.
In Explosive Forming a punch or diaphragm in conventional forming is replaced by an explosive charge.
Chemical energy from the explosives is used to generate shockwaves through a medium (mostly water), which are directed to deform the workpiece at very high velocities.
Ultrasonic welding is an industrial technique whereby high-frequencyultrasonic acoustic vibrations are locally applied to work pieces being held together under pressure to create a solid-state weld
This project are for understanding the working, advantages and disadvantages of plasma arc welding, the viewers can also use it for their needful purpose.
The cold welding process is one of the major welding processes that commonly used in engineering applications. There are several sub-categories of cold welding processes.
Thanks for the colleagues who give this slides to publish.
Explosive Forming is a manufacturing technique that uses explosions to force metal into dies and molds.
The explosives are typically either detonated underwater or in direct contact with the materials.
The technique is useful for short production runs of conventionally difficult-to-manufacture parts.
In Explosive Forming a punch or diaphragm in conventional forming is replaced by an explosive charge.
Chemical energy from the explosives is used to generate shockwaves through a medium (mostly water), which are directed to deform the workpiece at very high velocities.
Ultrasonic welding is an industrial technique whereby high-frequencyultrasonic acoustic vibrations are locally applied to work pieces being held together under pressure to create a solid-state weld
Plasma Technology In Metallurgy & Metal Working IndustryRajesh Joshi
Presentation on Plasma Technology Uses In Metallurgy & Metal Working Industry By Mr. Arun Kumar (Managing Director - Technocrats Plasma Systems Private Limited).
One of the welding processes that used in Engineering field is the plasma arc welding. There are several types of welding processes similar to this, but plasma arc welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Ekeeda Provides Online Video Lectures for Mechanical Engineering Degree Subject Courses for All Engineering Universities. Visit us: https://ekeeda.com/streamdetails/stream/mechanical-engineering
1. Group No. 2 : Mohd Shafwan
Aqil Fikry
Nurul Jannah
Farzana Afiqah
2. Contents:
• Int roduc t i on
• P nc i pl e of
ri
Operat i on
• Advant ages
• D s advant ages
i
3. Introduction
• Plasma arc cutting is a process that is used to cut steel
and other metals of different thicknesses using plasma
torch.
• In this process, an inert gas (compressed air) is blown at
high speed out of a nozzle; at the same time an electrical
arc is formed through that gas from the nozzle to the
surface being cut, turning some of that gas to plasma.
• The plasma is sufficiently hot to melt the metal being cut
and moves sufficiently fast to blow molten metal away
from the cut.
4. Principle of Operation
• The plasma is tied up by a water-cooled nozzle because of the high
temperature, the plasma expands and flows with supersonic velocity
speed to the workpiece.
• Inside the plasma arc, temperature of 30000 ᵒC can arise, that realize in
connection with the high kinetic energy of the plasma beam and
depending on the material thickness very high cutting speeds on all
electrically conductive materials.
• In this process, the stability of arc is needed to keep the plasma in desired
form.
• For cutting process, first of all a pilot arc ignition by high voltage between
nozzle and cathode takes place.
• This low-energy pilot arc prepares by ionization in parts the way between
plasma arc are touches the workpiece (flying cutting, flying piercing),the
main arc will start by an automatic increase in power.
5. ADVANTAGES
• Low cost alternative to oxy-fuel and laser profiling.
• More versatile and accurate option.
• Rapid cutting speed.
• Wide range of material and thickness – can yield quality cuts
on both ferrous and non-ferrous metals.
• Easy to use – only require minimal operator training.
• Economical than oxy-fuel for thickness under 25mm and
comparable up to about 50mm.
6. DISADVANTAGES
• High equipment expense.
• Need more operator skills.
• Complex welding procedures.
• Producing heavy noise level.
• Producing higher ozone production.
7. DISADVANTAGES
• High equipment expense.
• Need more operator skills.
• Complex welding procedures.
• Producing heavy noise level.
• Producing higher ozone production.