The solution came abOut by arranging the elements in the order of their atomic weights, tempering the arrangement with the results deduced from the theory of valencies and experimental observations.
The Tempering and Annealing of Steel.-But this sudden cooling goes too far, preserving so much 0-iron as to make the steel too brittle for most purposes.
Homer's familiarity with the art of tempering could come only after centuries of the wide use of iron.
He could never make the rights over the drink traffic uniform and equal, nor restrict privileges in the matter of the taille; while he was soon much embarrassed, not only by the coalition of particular interests and local immunities, which made despotism acceptable by tempering it, but also by Louis XIV.s two masterpassions for conquest and for building.
Thermal Treatment.-The hardening, tempering and annealing of steel, the chilling and annealing of cast iron, and the annealing of malleable cast iron are explained readily by the facts just set forth.
Fashioned at last into an arrowy shape, and welded by Perth to the shank, the steel soon pointed the end of the iron; and as the blacksmith was about giving the barbs their final heat, prior to tempering them, he cried to Ahab to place the water-cask near.
The value of E depends upon the tempering of the wire and will vary accordingly: for the springs of trade balances E will usually be about 10,500,000.
But the invaluable and rather delicate art of tempering the hardened steel by a very careful and gentle reheating, which removes its extreme brittleness though leaving most of ifs precious hardness, needs such skilful handling that it can hardly have become known until very long after the art of hot-forging.