Steels crucible cast

Tiegelgussstahl, m. crucible cast steel, crucible steel, -giessen, n. casting of crucible steel. 

Numerous compounds are observed in the Li-Ag phase diagram. The alloys are heated under Ar and cast in mild steel crucibles for metallographic examination, with homogeneity achieved by remelting under vacuum. Similar procedures were employed in an earlier study, except that H2 was used in place of Ar. An Ar cover gas was also employed to prepare the brasslike yj phase in the Li-Ag system for structural study. The silver and lithium were melted together in an iron crucible for 15-30 s before cooling without quenching to minimize the loss of lithium-. ... 

Figure 4.17 A Steel crucible with Al20 liner used for drop casting of niobium.

The beneficial effect of titanium treatment is most evident in Bessemer steel it is less marked in open-hearth steel and it is even applied to crucible and electric steels and cast iron. The addition of titanium is best accomplished as an iron alloy. If the element is added alone, its high melting point and low specific gravity make it difficult to obtain a good mix. In... 

Heat a crucible to full red heat by placing it on a stand and mounting a propane torch underneath. A number of items may be used as crucibles, such as a short length of steel pipe with cap, an old oil filter housing, or a small cast iron skillet. The latter is my personal choice. 

In 1796 Smithson Tennant Droved that equal weights of carbon and diamond, when burned with saltpeter, yielded equal amounts of carbon dioxide (258, 265). Three years later Guyton de Morveau and Louis Clouet produced cast steel by heating a 907-milligram diamond in a small crucible of wrought iron (24, 258, 266). As early as 1704 Sir Isaac Newton stated in his Optics that the diamond must be combustible, and in 1772 Lavoisier found this to be true (23). The English chemist Smithson Tennant proved in 1796 that it consists solely of carbon (24). ... 

Huntsman Also called the Crucible process. A method for purifying blister steel, made by cementation, by melting it in a closed clay or graphite crucible and pouring the melt into a cast iron mold. Developed by B. Huntsman, a clockmaker, around 1740, initially in Doncaster and later in Sheffield, UK. The process was not patented but was operated in secrecy for some years. It was subsequently widely operated in the UK, Europe (where the combination of this with the cemen-... 

Crucible and structural material in metallurgical applications, for example, as a break ring in the casting nozzles. Cross-sections of 50-250 mm diameters are now in use. The break ring determines the zone in which the liquid steel forms a solid. 

Cast steel is also called tool steel or high-carbon steel. It is an alloy of iron and carbon which is melted in airtight crucibles and then poured into moulds to form ingots. These ingots are then rolled or pressed Into various shapes from which the finished products are made. Cast steel can be hardened and tempered and is therefore ideal for manufacturing tools. Hammer heads, pliers, wire cutters, chisels, files and many machine parts are also made from cast steel. 

She] Chemical analysis of quenched probes. Electrolytic Cu and cast-iron, produced by graphite saturation of steel were melted in graphite crucibles in cryptole furnace. The contents of steel 0.12% C, 0.55% Mn, 0.15% Si, 0.04% P and S (mass%) SolubiUty of Cu in cast-iron at 1300, 1350 and 1400°C... 

Gray metallic crystals, excellent thermal shock resistance, greatest oxidation inertness of aU refractory hardmetals. Hot-pressed crucible for handling molten metals such as Zn, Mg, Fe, Cu, Zn, Cd, Sn, Pb, Rb, Bi, Cr, brass, carbon steel, cast irons, and molten cryolithe, yttria, zirconia, and alumina. Readily corroded by liquid metals such as Si, Cr, Mn, Co, Ni, Nb, Mo, Ta and attacked by molten salts such as Na,0, alkali carbonates, and NaOH. Severe oxidation in air occurs above 1100-1400°C. Stable above 2000°C in inert or reducing atmosphere. 

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