Exercises
- Vocabulary: English to Czech
- Vocabulary: Czech to English
- Vocabulary: Combined
- Blanks: Arc Welding p.1
- Blanks: Acr Welding p.2
- Blanks: OFW, Resistance W. and PAW
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Vocabulary: English to Czech
- sheet metal/ʃiːt ˈmet̬.əl/
- protective gas/prəˈtek.tɪv ɡæs/
- aluminum/ˌæl·juˈmɪn·i·əm/
- electrode/iˈlek.troʊd/
- porosity/pɔːrˈɑː.sə.t̬i/
- tungsten/ˈtʌŋ.stən/
- electric arc/iˈlek.trɪk ɑːrk/
- inert gas/ˌɪnˈɝːt ɡæs/
- active gas/ˈæk.tɪv ɡæs/
- weld gun/weld ɡʌn/
- brittleness/ˈbrɪt̬.əl.nəs/
- acetylene/əˈset̬.ə.liːn/
- carbon/ˈkɑːr.bən/
- non-ferrous/ˌnɑːnˈfer.əs/
- electron beam/iˈlek.trɑːn biːm/
- filler rod/ˈfɪl.ɚ rɑːd/
- filler material/ˈfɪl.ɚ məˈtɪr.i.əl/
- flux/flʌks/
- resistance welding/rɪˈzɪs.təns ˈwel.dɪŋ/
- oxyacetylene/ˌɑːk.si.əˈset̬.əl.iːn/
- pressure welding/ˈpreʃ.ɚ ˈwel.dɪŋ/
- carbon dioxide/ˌkɑːr.bən daɪˈɑːk.saɪd/
- slag/slæɡ/
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Vocabulary: Czech to English
- /******** ***/elektrický oblouk
- /******/uhlík
- /*********/křehkost
- /********/neželezný
- /********* ******/odporové svařování
- /****** *********/oxid uhličitý
- /*******/wolfram
- /********* ***/ochranný plyn
- /**** ***/svařovací pistole
- /************/oxyacetylen
- /****/struska
- /****** ***/aktivní plyn
- /**** ***/svařovací drát
- /**** ***/inertní plyn
- /********/acetylén
- /*********/elektroda
- /**** ********/přídavný materiál
- /******** ***/svazek elektronů
- /********/pórovitost
- /***** ******/tlakové svařování
- /*****/tavidlo
- /*** *****/plech
- /**********/hliník
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Vocabulary: Combined
- /*******/wolfram
- electron beam/iˈlek.trɑːn biːm/
- /**** ********/přídavný materiál
- inert gas/ˌɪnˈɝːt ɡæs/
- /*********/křehkost
- acetylene/əˈset̬.ə.liːn/
- /********/pórovitost
- oxyacetylene/ˌɑːk.si.əˈset̬.əl.iːn/
- /***** ******/tlakové svařování
- aluminum/ˌæl·juˈmɪn·i·əm/
- /**** ***/svařovací pistole
- sheet metal/ʃiːt ˈmet̬.əl/
- /******/uhlík
- electrode/iˈlek.troʊd/
- /*****/tavidlo
- carbon dioxide/ˌkɑːr.bən daɪˈɑːk.saɪd/
- /**** ***/svařovací drát
- protective gas/prəˈtek.tɪv ɡæs/
- /********/neželezný
- active gas/ˈæk.tɪv ɡæs/
- /****/struska
- resistance welding/rɪˈzɪs.təns ˈwel.dɪŋ/
- /******** ***/elektrický oblouk
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Blanks: Arc Welding p.1
Arc welding (also called welding) employs an electric power supply which creates and maintains an electric arc between an electrode (an electrical conductor) and the base material, so the metals melt at the welding . The temperature of the electric arc is generally around °C. This method of welding uses protective gases, mainly the gases of (Ar), carbon (CO2), and their mixtures. These protective welding atmospheres are used to prevent and brittleness. They also restrict from accessing the weld while stabilizing the electric arc. For arc welding, we either use consumable electrodes or non-consumable electrodes. Consumable electrodes are made of and serve as a material. Non-consumable electrodes do not and are generally made of (W) or carbon (C), as these materials have an exceptionally high point. To fight oxidation and contaminants, we may use a powder called which produces a shielding when heated. are coated with this powder.
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Blanks: Arc Welding p.2
When welding is in progress, some of the coating solidifies and becomes residual after the weld area cools down. This residue is called . The should float to the top of the weld pool and so the metal which is being melted must have a higher than the one of the used materials. The beneficial property of the is that it serves as thermal insulation of the weld and helps to reduce its rate. It might end up being trapped inside the weld because of inadequate welding, which could cause some of the previously mentioned welding problems.
The most commonly used types of arc welding are: Metal--Gas, Metal-Active-Gas, -Inert-Gas (MIG, MAG, TIG). MIG and MAG belong to a group known as gas metal arc welding (GMAW). MIG employs only gases (mostly Ar and He). This method is mainly used for aluminum (Al) welding or welding of other non- metals. MAG utilizes active gas mixtures (Ar, CO2, O2). This method is mainly used for steel welding. Both methods use electrodes. TIG, which is also called gas arc welding (GTAW), uses an electrode made from which is a non-consumable electrode. A separate filler rod is used if we require one. gases are used in this process.
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Blanks: OFW, Resistance W. and PAW
Oxyacetylene welding (OFW), which is also called oxy-fuel welding or welding, usually uses the combustion of acetylene (C2H2) in which creates a welding flame temperature of about °C. The flame melts the rod and the welding materials while welding them together. Heat produced by the gun in this process is lower and considerably less concentrated than in arc welding. is not needed in this method since carbon is produced by burning oxyfuel and acts as a shielding gas.
Resistance welding involves two (or more) metal being pressed against each other with an electric passing through them. The resistance caused by the contact between them generates which allows them to gain a plastic state. Copper are used in this process. No material is required in this method.
Plasma arc welding (PAW) uses a electrode similarly to Tungsten-Inert-Gas welding. The plasma of the arc is temporarily in the state of gas which becomes and conducts after it is exposed to an electric current. Then the gas produces the heat of welding. Compared to GTAW, PAW has a much greater amount of gas.