Welding Arc

Arc column, located between the anode and cathode regions, has the greatest length in the arc gap. The main process here is ionization, or the formation of charged gas particles. This process occurs in result of collision of electrons and neutral gas particles. When sufficient energy collision gas particles lose electrons and form positive ions. Such ionization is called ionization collision. Collision may occur without ionization, whereas the collision energy is released as heat and is a rise in temperature arc column. Formed in the arc column charged particles move to the electrodes: electrons – to the anode, the ions – to cathode. Part of the positive ions reach the cathode spot, the other part of them reaches the cathode, and by attaching itself to the negatively charged electrons, forming neutral atoms.

This process of neutralization of particles called recombination. In the arc column at all combustion conditions there is a sustainable balance between ionization and recombination processes. In general, the arc column is neutral, since in each of its cross section are simultaneously equal number of oppositely charged particles. The temperature of the arc column reaches 6000 8000 C or more – depending on the density of the welding current. Voltage drop in the column varies between 10 50 V / cm, depending on the gas medium and decreases with the introduction of the components. These include alkaline and alkaline-earth metals (Ca, Na, K, etc.).

The total voltage drop in the arc Ua – uk + Uz + U &. Voltage drop in the arc column can be represented as Ue = E1, where E – the tension along the length, / cm – the length of the arc column. Values of uk, Ua, E practically depend only on the electrode material and the composition of the medium arc gap, and with the unchanged sion remain constant under different conditions welding. Due to the small length of the cathode and anode regions can be considered as practically / o = / d, where d is the length of the arc. Then the expression Un = a + – b where a = uk + Ua; b = E. It follows that the arc voltage directly depends on its length. Welding arc classified into: the applied electrodes – with mig and tig, the degree of compression of the arc – and a free compression scheme for supplying a welding current – direct and indirect, by the nature of the current – dc and ac (single phase or three-phase current); to the polarity of dc – direct and reverse polarity. Arc is called short if its length is 2 4 mm. The length of the normal arch is 4 6 mm. Arc length more than 6 mm long call.

The evolution of Internet

The evolution of Internet access in our country is advancing by leaps and sabah bounds. Latest figures show that 37 of the population connected, 13 below the European average. The increase in our country is the fastest on the EU-15. Despite these encouraging data there are johor bahru many Spanish companies investment that have not fully marketing exploit langkawi the enormous sambilan potential of the network. 87 of European companies using the network as a fundamental part of your business. Internet maylasia is part of the daily routine of business life. Internet is an incredible source of knowledge and spreading democratic of all kinds of activities, reviews and extent of any person. The modern company search engines are replacing other berhad conventional means in the information search. Never was so easy and convenient for financial today’s consumers seek information sarawak about products, companies management before making a purchase decision. Internet is therefore jalan an important channel for prescription and sale of products celcom and services. The way this information is treated in the network must play an important role in marketing strategy and communication of all business. In the same buat duit way that the techniques of mystery directory shopping or mystery shopper are applied in real life, the mystery shopping can be applied in tourism the network to gain valuable information about our customers strategy and our competitors. This competitive intelligence can be a useful vital to understanding what our target audience demand and therefore economy anticipate unmet needs, but also to detect favorable or unfavorable opinions about products services from both our company and our competition more direct. It is kereta curious selangor how some companies offering their products using the international Internet channel johor only take into account the opinion of the users. The lack of knowledge or application of these techniques to detect conditions in which the corporate end user receives the service takes on many occasions to the failure of some of the substantial investments in product launches used. Much of this customer feedback comes via firms usahawan reclamation or never comes. Many users who use shopping services through the network, abandoning their attempts to bad information, correct form, shopping slow connections and a lot of reasons sales justified without the enterprises pendapatan become aware of these kuching reasons. The technology products and services such as connections, hosting, buy domains etc. .. fare hotel no better when we look at the views of melaka customers. This lack of knowledge and customer service have serious consequences when complaints are made at the network that acts of great amplifier and, as noted earlier, an important and unique source of limitation and information to many users. But not only the technology companies can leverage jutawan the Internet as a source of information. The network has any information and opinions. In conventional uptrend firms today perniagaan have much of development and information online. Other links: Mystery Box http://www.wexterbox.com/calidad.htm duit internet http://www.wexterbox.com/cliente.htmWexter Shoppinghttp: / / Ernesto Garcia wext kuala www.wexter.es perak Box SL. . . Magazine Distribution and Consumer E-Mail: info wexter.com

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