Inerte Gas Gases

Table – Source: Table of the effect of the more common elements of league Applied Technology I,2005. 3. Process of welding MIG/MAG 3,1 Beddings According to Norm ASME. Sec. IX the acronym of process and GMAW. Gas Metal Arc Welding.

You mark, Modenesi and Bracarense understands that welding GMAW where the union of you sin metallic and established between a naked, consumable metallic electrode, and it sins of work. For the protection of the used puddle of fusing and a gas or one mixture of gases that can be active or inert. In Brazil the process and popularly and commercially known as MIG (Metal Inerte Gas) when the gas for used and inert protection or MAG (Metal Ativo Gas) when the gas for used and active protection. 3,2 Application process GMAW and used in diverse applications a time that can be used in all the positions, that is: plain, horizontal, vertical and sobrecabeca. They are indicated for the welding of metallic structures, tanks, reconstruction of you sin consumed. amantegamento, beams and others.

They can be used for welding of ferrous and not ferrous materials, as aluminum, magnesium, have covered steel stainless carbon and. As and not used flow, the possibility of slag inclusion and minim, but electrode can occur in function of the silicon of the wire. Kg/h has a tax of deposition of approximately of 15. 3,3 Parameters of Welding the welding parameters influence directly in the quality of the weld lace. They are: chain intensity (amperage), tension (voltage), speed of welding, length of the arc (stick-out), gases of protection, diameter of the wire electrode, position of welding, polarity, way of transference. Chain intensity. Tension and length of the arc the tension depends directly on the length of the arc and the diameter of the electrode, the gas of protection and the way of transference. With the constancy of these 0 variable the increase of the tension provokes a width bigger and lesser height of the weld lace. Better molhagem and reduction of the penetration. High tensions provoke porosity, respingos and mordeduras in the lace. Speed of Welding the welding speed this on amount of set free energy in the welding. , How much thus bigger and the speed of lesser welding and the amount of heat unfastened in the weld lace. Extreme speeds provoke minor penetration and low speeds provoke structural alterations. Gases of Protection the protection gases influence directly in the welding in diverse ways: in the protection of the weld lace of the atmospheric contamination, in the type of transference, depth and format of the weld lace. The used gases more in the process of welding GMAW are the Argon, Co2, Helium and mixtures of these. They are divided in two types: Inert gases (Argon, Helium and its mixtures) and Active Gases (Co2, Oxygen and Nitrogen). Each type of gas and mixtures has different objectives and must be taken in consideration for the project. Table of comparison of the characteristics of welding with the gases helium and pure argon. Characteristic Argon Thermal Condutividade Helium Low Raised Tension of the Lesser Arc Bigger Heat generated in the Bigger Lesser arc Applications fine Plates and Metals of low condutividad


Bariatric Surgery

When a person who has been obese for a long time is subjected to a Bariatric Surgery and begins to lose weight it is likely to cost you find the point where he feels comfortable with your appearance. After the operation, the obese will continue losing weight for a year or a year and a half, and even if physical changes are noticeable, the mind takes to accept the new image much more time. For this reason, guide us through the mirror to find our fair weight is a very risky task. There are alternative approaches that tell us what is the weight more appropriate for each of us. Some physicians prefer to speak of weight possible, somewhat higher than the ideal goal for those patients who have been obese for many years, while others argue that any person is able to return to his weight and maintained if it is with treatment and changes in appropriate habits.

BMI and abdominal perimeter are, in general, the two main elements to determine the weight to that will arrive. Both equations show between which weights We would be within the normal range. Taking into account the weight was reached that and eating habits that you have, your doctor may establish a weight in which the patient is comfortable and can easily maintain. It is convenient to set goals in the short and medium term. Once you are within the normal weight, it is not necessary to reach the minimum possible. You can see at what weight will feel better physically and emotionally.

If the weight to which aspires to reach is too low for you can that you won’t work keep it, regain some pounds and live this experience as a failure, why is better to be cautious and go carefully. Weight loss is not simply reaching the lowest weight possible. You must understand that once reached its goal, must remain in it for the rest of your life, so if they have unrealistic goals, will be very difficult to continue. Credit: Dr. Caldwell B. Esselstyn, Jr.-2011. If arriving at the weight scheduled with the specialist you see is too thin and does not feel as with your image, you should talk with your doctor to determine the steps to follow. Does it really looks very thin or is that? still will not fit your image? Sometimes the problem is solved with climbing three or four kilos, while in other cases the patient returns to its initial weight because it is not customary to its slim appearance. The control of the physician is essential in these cases to prevent complications.