Pietenpol-List: For Sale Acer Tempo DX900 =?ISO-8859-1?Q?=94?=-$190 ,Apple
Posted: Fri Oct 30, 2009 1:09 pm
Original Posted By: "pigpy"
Guys,'Twas I who mentioned that an oxyacetylene torch SHOULD NEVER BE USED to weld orattempt to weld Titanium. Like a magnesium fire, a Titanium fire is extremelydifficult to put out, with the added problem, that, when doused with water,it will strip Oxygen from the water, resulting in a Hydrogen fire/explosion.>From Wikipedia (citations removed):In terms of fabrication, all welding of titanium must be done in an inert atmosphereof argon or helium in order to shield it from contamination with atmosphericgases such as oxygen, nitrogen, or hydrogen.And:As a powder or in the form of metal shavings, titanium metal poses a significantfire hazard and, when heated in air, an explosion hazard. Water and carbon dioxide-basedmethods to extinguish fires are ineffective on burning titanium;Class D dry powder fire fighting agents must be used instead.When used in the production or handling of chlorine, care must be taken to usetitanium only in locations where it will not be exposed to dry chlorine gas whichcan result in a titanium/chlorine fire. A fire hazard exists even when titaniumis used in wet chlorine due to possible unexpected drying brought aboutby extreme weather conditions.Titanium can catch fire when a fresh, non-oxidized surface comes in contact withliquid oxygen. Such surfaces can appear when the oxidized surface is struckwith a hard object, or when a mechanical strain causes the emergence of a crack.This poses the possible limitation for its use in liquid oxygen systems, suchas those found in the aerospace industry.Additional info may be found here:http://www.tms.org/pubs/journals/JOM/00 ... htmlBottom line: don't mess with Titanium at home, unless you're properly equipped.--------Tom KreinerRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: For Sale Acer Tempo DX900 =?ISO-8859-1?Q?=94?=-$190 ,AppleiPhone 3GS 32GB $2
Guys,'Twas I who mentioned that an oxyacetylene torch SHOULD NEVER BE USED to weld orattempt to weld Titanium. Like a magnesium fire, a Titanium fire is extremelydifficult to put out, with the added problem, that, when doused with water,it will strip Oxygen from the water, resulting in a Hydrogen fire/explosion.>From Wikipedia (citations removed):In terms of fabrication, all welding of titanium must be done in an inert atmosphereof argon or helium in order to shield it from contamination with atmosphericgases such as oxygen, nitrogen, or hydrogen.And:As a powder or in the form of metal shavings, titanium metal poses a significantfire hazard and, when heated in air, an explosion hazard. Water and carbon dioxide-basedmethods to extinguish fires are ineffective on burning titanium;Class D dry powder fire fighting agents must be used instead.When used in the production or handling of chlorine, care must be taken to usetitanium only in locations where it will not be exposed to dry chlorine gas whichcan result in a titanium/chlorine fire. A fire hazard exists even when titaniumis used in wet chlorine due to possible unexpected drying brought aboutby extreme weather conditions.Titanium can catch fire when a fresh, non-oxidized surface comes in contact withliquid oxygen. Such surfaces can appear when the oxidized surface is struckwith a hard object, or when a mechanical strain causes the emergence of a crack.This poses the possible limitation for its use in liquid oxygen systems, suchas those found in the aerospace industry.Additional info may be found here:http://www.tms.org/pubs/journals/JOM/00 ... htmlBottom line: don't mess with Titanium at home, unless you're properly equipped.--------Tom KreinerRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: For Sale Acer Tempo DX900 =?ISO-8859-1?Q?=94?=-$190 ,AppleiPhone 3GS 32GB $2