https://articleseen.com/rss/rssauthor.aspx?auth=thomas mark1ArticleSeen.com - Submit your quality article for maximum exposureCopyright 2009 ArticleSeenhttps://articleseen.com/Article_hot-extrusion-of-metals_140413.aspxExtrusion is a hot working process, in which, forging, rolling etc., uses the good deformability of heated metallic materials for shaping them. The most important aspect of the process is that it enables considerable changes of shape to be achieved in a single operation and provides a means of dealing with metals and alloys whose physical structure renders them unsuitable for shaping by other methods.Sat, 28 Jan 2012 05:46:42 GMThttps://articleseen.com/Article_precautions-against-mine-gas_140299.aspxThreaded Thermowells are used to provide an isolation between a temperature sensor and the environment, either liquid or gas. The cloud of dust thrown up by the explosion is rendered nonflammable by the presence of the stone dust. Stone dust is also used as a means of arresting the propagation of explosions.Sat, 28 Jan 2012 02:36:13 GMThttps://articleseen.com/Article_ultrasonics_137471.aspxIf radiation is required in one direction only, one face must be provided with a foam rubber cushion, which acts as a screen impervious to sound.Thermowell is a hollow, tube-like receptacle used in conjunction with other industrial temperature measurement devices. Sun, 22 Jan 2012 23:57:32 GMT