Nuances In The Selection Of Clothing For Children Up To The Year

April 25th, 2012

All recommendations are similar, but there are some nuances. Crumbs under the age of 3 months should buy as much as possible, comfortable clothing – no buttons undershirts, they should fill the slider or the swaddling from the waist up, body with short and Long sleeves Do not buy undershirts with sleeves sewn more correct to use things with otvorotnym Sleeve-Scratchy or more attentive care for the baby nails, and mittens are too easily removed. It is important that he saw her hands and fingers, it helps to develop motor skills. Baby from 3 to 6 months of useful body, children's overalls – Covert, sliders on straps, shirts and blouses with buttons or keys. And from raspashonok can discarded, since child should not swaddle. Children aged from 6 to 9 months will spend a lot of time sitting and straps would interfere.

Pants will be comfortable on a wide elastic band, hemmed bottom, set with the socks. Excellent suit socks with plastic or rubber stickers on the soles – they are very comfortable to walk on the floor, but wear shoes with them is very difficult. Bodys recommend buying separate, in addition to wear under pants . Older baby – from nine to twelve months, as yaromu researcher of the world, will be useful trousers made of thick fabric (winter and fall from waterproof) and jeans with straps or suspenders, since baby is often falls and sits on his knees during walking and games. Already requires a complete footwear, better leather, with a stable sole in a small heels.

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Electrode Material

April 19th, 2012

Electrode coated with the main characteristic of krupnokapelny gerenos metal in a wide range of welding conditions because of the high surface tension of the metal at the boundary with the slag, since both the slag and metal raskisleny well. At a low voltage (short arc) metal transfer can be done by a short circuit as the free growth of droplets is difficult. At the time of a short circuit, the metal flows from the electrode tip in the bath. With the lengthening of the arc weight borne droplets increases as the conditions for the free growth of the drop at the end of the electrode. For welding electrodes with acid and Rutile is characterized melkokapelny transfer.

Small droplet size due to the relatively low interfacial tension at the metal with the slag, since both the slag and metal contain significant amounts of oxygen. The droplet size at the same time depends the current strength. At low current densities the metal carries a relatively large drops. With the increase of current density carried by the mass drops sharply reduced, as the time of interaction with the surrounding drops medium (slag, gas phase). This contributes to a higher temperature drops and the relatively low interfacial tension at the metal from the slag. Changing the arc voltage in the range is not practically significant reflected in the transfer of metal from the electrodes with rutile and a sour finish.

When the thickness of coating the electrodes with a sour and rutile observed to increase the oxygen content in the droplets and a decrease in their sizes. Decrease in droplet size also contribute to the aerodynamic forces. In Basic electrode oxygen content drops with increasing the coating thickness is reduced, thus increasing the size of drops. Thus, the thickness of the coating on the electrodes and their composition depends mainly oxygen content in the droplets, which also has a decisive influence on the surface tension forces holding the droplet on the end electrode.



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