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What is the major reason for the weld penetration in CO2 MIG welding?
The heat distribution throughout the arc is different in case of the CO2 gas than Argon cause by the high heat conductivity of the CO2. In addition, the CO2 dissociates at high temperatures (in the arc) and then recombines when the temperature drops at the workpiece level. The recombination is an exoterm reaction which yields the heat taken at the dissociation In this way there is an additional heat gained at the level of the work piece which gives higher penetration. This happens only with bi-atomic gases (CO2).
How Much Does Welding School Cost?
As one of the increasingly stable locations for dislocated and unemployed workers to go into, the industry of welding has seen a definite rise in applications for students in vocational schools that have welding programs. The top priority for most of the people who are looking to attend welding school is the cost of welding school, and this is definitely a major concern with many people having to deal with the implications of a volatile economy and an unstable job market. There are two major distinctions of welding schools when it comes to costs. There are welding schools that are administered by vocational schools, and there are also welding schools that are administered by the more traditional university and college system. The cost of welding school is definitely lower if it is administered by vocational school and if it is administered by a university or college system. The reason for this is that the University and College administration of the welding school is most likely only a small part of the amount of programs affiliated with the university or college. A part of the tuition that a person would pay for attending the welding school would go towards all of the programs that aren't ministered by that university or college. However, with a vocational school that only deals specifically with a welding program, the entire tuition goes towards the cost of welding school and no other program. This is highly attractive for many workers who have been identified as unemployable or dislocated, or those who have recently returned from service in the armed forces and are looking for a way to incorporate themselves back into civilian life. These people are usually very motivated when it comes to paying the cost of welding school, but many banks will not give them loans for university programs, which continue to go up in cost year after year. Faced with this decision, many people choose to go to welding schools at vocational programs. This is advantageous for many reasons, including the increased flexibility of a vocational program, as well as the lower cost of the vocational program as compared to a university.
Why do welders wear safety glasses?
Obvious one is ofcourse that the safety glasses shield the eyes from sparks and splashed hot material. Another very important reason is that during the welding process ultraviolet rays are emitted and can and do cause harm to the retina and other parts of the eye. In fact, one should not look directly at the welding process even from some distance without protecting the eyes.
What is the main use of physics why do we learn physics?
Physics is the study of energy and motion along with many other fundamental laws of nature. It is considered the foundational science upon which nearly all other sciences are based on. This branch of science is actually extremely important and practical for the average person if they want to become engineers. Think of Physics as the "fundamental science of engineering". The use of Physics in Engineering is probably the most common and practical reason we need to learn it in school.
What is the reason for applying a gauge tolerance?
Reason to apply a gauge tolerance
What is the purpose for welding with direct current?
spot welding is one reason
What effect the wind velocity has on the weld?
All types of welding rely on some form of protection to keep the weld puddle from oxidizing. Molten metal has an afinity to oxygen. Some processes use an inert gas ( ie:GTAW GMAW) the G, being Gas, is usually argon,helium, or CO2. SMAW (stick welding) S being Shielded, uses both slag and smoke to protect the molten puddle. Therefore it stands to reason if the wind is strong enough to blow away the smoke or inert gas then oxygen contained in the air can attack and destroy the weld.
What is fundamental reason means?
"Fundamental reason" typically refers to the primary or underlying cause of something. It represents the basic, essential explanation for a particular phenomenon or event. Understanding fundamental reasons helps to get to the core of a problem or issue.
Was the fundamental reason the colonists revolted was because of government?
Correct, they had no representation in government.
The possibility of distortion in the case of submerged arc welding comment by giving reasons?
The heat input in the case of Submerged Arc Welding (SAW) is higher than that in manual welding process. Reason is that the welding proceeds continuously while the work is rotated. In manual welding, it is controlled by the welder besides the time gap for changeover of electrode, relaxation by operator etc.
What pays more underwater welding or power lineman?
Underwater welding jobs have extremely tough technical requirements. For that reason, this job pays more than a job as a power lineman.
Why did the us get directly involved in vietnam?
The fundamental reason was to stop the expansion of Bolshevism.
The fundamental reason why most supply curves are upward sloping is that?
the fundamental reason is that most firms produce quantity inversly proportionate to the current supply/demand ratio is that they are driven by a strong desire of ethics and moral goods along with money. cool.
What are reason for poor spot welding?
Rusty/unclean surface grease on metal and thickness and heat setting all poss answers
Will gravity ever go?
If you mean whether it will disappear: There is no particular reason to believe it will.
What is the fundamental reason people must choose which goods to buy and consume?
They are limited by a budget constraint.
Would an object fall apart at near absolute zero?
There's no fundamental reason that it should.
