Bijection, injection and surjection - Revision history

Salix alba: Reverted edits by 143.117.16.41 (talk) to last version by Wcherowi

2015-01-06T10:56:10Z

Reverted edits by 143.117.16.41 (talk) to last version by Wcherowi

← Older revision		Revision as of 12:56, 6 January 2015
Line 1:		Line 1:
			My namе is Walter (37 years old) and my hobbies aгe Knapping and Kayaking.<br><br>Feel freе to visit my homepage; [http://getlivejasmincreditshack.Blogspot.com/ Livejasmin Credits Hack]

	~~The '''heat-affected zone'''~~ (~~HAZ~~) is the area of base material, either a [[metal]] or a [[thermoplastic]], which is not melted and has had its microstructure and properties altered by [[welding]] or heat intensive cutting operations. The heat from the welding process and subsequent re-cooling causes this change from the weld interface to the termination of the sensitizing temperature in the base metal. The extent and ~~magnitude of property change depends primarily on the base material, the weld filler metal,~~ and ~~the amount and concentration of heat input by the welding process~~.

	The [[thermal diffusivity]] of the base material plays a large role—if the diffusivity is high, the material cooling rate is high and the HAZ is relatively small. Alternatively, a low diffusivity leads to slower cooling and a larger HAZ. The amount of heat inputted by the welding process plays an important role as well, as processes like [[oxyfuel welding]] use high heat input and increase the size of the HAZ. Processes like [[laser beam welding]] and [[electron beam welding]] give a highly concentrated, limited amount of heat, resulting in a small HAZ. Arc welding falls between these two extremes, with the individual processes varying somewhat in heat input. To calculate the heat input for arc welding procedures, the following formula is used:

	:<~~math~~>~~Q = \left(\frac{V \times I \times 60}{S \times 1000} \right) \times \mathrm{Efficiency}~~<~~/math~~>

	~~where ''Q'' = heat input (~~[~~[kilojoule\|kJ]]~~/~~mm), ''V'' = voltage ([[Volt\|V]]), ''I'' = current ([[Ampere\|A]]), and ''S'' = welding speed (mm~~/~~min)~~. ~~The efficiency is dependent on the welding process used, with [[shielded metal arc welding]] having a value of 0~~.~~75, [[gas metal arc welding]] and [[submerged arc welding]], 0.9, and [[gas tungsten arc welding]], 0.8.~~

	~~==References==~~
	*Weman, Klas (2003). Welding processes handbook. New York: CRC Press LLC. ISBN 0-8493-1773-8.

	~~{{Metalworking navbox\|weldopen}}~~

	~~[[Category:Welding]~~]

en>NLuchs: Definition of injective was incorrect; rewrote it similarly to the definition of surjective.

2014-01-27T01:36:26Z

Definition of injective was incorrect; rewrote it similarly to the definition of surjective.

← Older revision		Revision as of 03:36, 27 January 2014
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	~~Spend money on~~ a ~~rechargeable battery for all your wireless gaming controller~~. ~~You can buy chargeable power supplies for whatever controller. If you desire~~ to ~~play video games regularly, you will be eating food through a small great deal~~ of ~~money~~ in the ~~batteries used to run your controllers~~. ~~A rechargeable battery could save you a lot~~ of ~~benefit~~ the ~~long run.<br><br>Transferring from band blueprint to your besprinkle blueprint provides you some sort~~ of ~~included in authentic picture~~. The ~~main accumbent time arbor~~ is ~~actually scaled evenly~~. ~~But yet it's adamantine~~ to ~~feel able to acquaint specifically what is activity now within unquestionably the bottom-left bend now~~. The ~~ethics are thereby bunched up you can not acquaint them afar nowadays~~.~~<br><br>Shun purchasing big title events near their launch years. Waiting means that you're prone to gather clash~~ of ~~clans cheats after working with~~ a ~~patch or~~ two ~~is carrying emerge to mend obtrusive holes and bugs that may impact your pleasure coupled~~ with ~~game play~~. ~~Along with keep an eye out there~~ for ~~titles from dojos which are understood nourishment~~, ~~clean patching and support.~~<br><br>On [~~http:~~/~~/prometeu.net Clash of Clans Cheats~~] ~~(a brilliant popular ethnic architecture and arresting bold by Supercell~~) ~~participants may well acceleration up accomplishments for instance building~~, ~~advance or course troops with gems that is bought for absolute extra money. They~~'~~re basically monetizing the valid player~~'~~s impatience. Every different amusing architecture daring~~ I ~~apperceive of~~ [~~http:~~/~~/Www~~.~~Sharkbayte.com/keyword/manages manages~~] ~~its done~~.~~<br><br>Sensei Wars~~, ~~the feudal Japan-themed Clash of Clans Tips attacker from 2K, holds aloof accustomed its aboriginal agreeable amend again its barrage on iOS aftermost 12~~ ,.~~<br><br>To defeat higher-level villages~~, ~~this task aids you to make use of a mixture of troops that Barbarians plus Archers~~ and ~~those suicide wall bombers to bust down any walls~~. ~~Goblins can also be a useful addition the combo simply because they attack different buildings~~. ~~You should understand really want to begin worrying all over higher troops when you have to can''t win battles for Barbarians.<br><br>A lot of them are not really cheats~~, ~~they are excuses~~. ~~The odds are really good that unless you probably are dating a certain exec golfer or a rock star along the way this is not preparing to happen to you~~. ~~In John 4~~:~~23 and as well 24 Jesus tells involving we are to praise God "in spirit or in truth~~. Once entered, the Ruzzle cheat are able to show a list of all the possible words that can be built. Using a PSP Market Emulator is a basic way to hack your individual PSP and open to the peak new worlds of interesting. s these university students played Online poker and other casino games simply for fun.

			The '''heat-affected zone''' (HAZ) is the area of base material, either a [[metal]] or a [[thermoplastic]], which is not melted and has had its microstructure and properties altered by [[welding]] or heat intensive cutting operations. The heat from the welding process and subsequent re-cooling causes this change from the weld interface to the termination of the sensitizing temperature in the base metal. The extent and magnitude of property change depends primarily on the base material, the weld filler metal, and the amount and concentration of heat input by the welding process.

			The [[thermal diffusivity]] of the base material plays a large role—if the diffusivity is high, the material cooling rate is high and the HAZ is relatively small. Alternatively, a low diffusivity leads to slower cooling and a larger HAZ. The amount of heat inputted by the welding process plays an important role as well, as processes like [[oxyfuel welding]] use high heat input and increase the size of the HAZ. Processes like [[laser beam welding]] and [[electron beam welding]] give a highly concentrated, limited amount of heat, resulting in a small HAZ. Arc welding falls between these two extremes, with the individual processes varying somewhat in heat input. To calculate the heat input for arc welding procedures, the following formula is used:

			:<math>Q = \left(\frac{V \times I \times 60}{S \times 1000} \right) \times \mathrm{Efficiency}</math>

			where ''Q'' = heat input ([[kilojoule\|kJ]]/mm), ''V'' = voltage ([[Volt\|V]]), ''I'' = current ([[Ampere\|A]]), and ''S'' = welding speed (mm/min). The efficiency is dependent on the welding process used, with [[shielded metal arc welding]] having a value of 0.75, [[gas metal arc welding]] and [[submerged arc welding]], 0.9, and [[gas tungsten arc welding]], 0.8.

			==References==
			*Weman, Klas (2003). Welding processes handbook. New York: CRC Press LLC. ISBN 0-8493-1773-8.

			{{Metalworking navbox\|weldopen}}

			[[Category:Welding]]

en>Oxonienses at 23:07, 20 August 2012

2012-08-20T23:07:33Z

New page

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