|
|||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||
| >> GLOSSARY OF TERMS |
| D |
| DEAD FLAT Perfectly flat. As pertaining to sheet, strip or plate. Refer to Stretcher Leveling. |
| DEAD SOFT ANNEALING Heating metal to above the critical range and appropriately cooling to develop the greatest possible commercial softness or ductility. |
| DEAD SOFT STEEL Steel, normally made in the basic open-hearth furnace or by the basic oxygen process with carbon less than 0.10% and manganese in the 0.20-0.50% range, completely annealed. |
| DEAD SOFT TEMPER (No.5 TEMPER) - Condition of maximum softness commercially attainable in wire, strip, or sheet metal in the annealed state. |
| DEBURRING A method whereby the raw slit edge of metal is removed by rolling or filing. |
| DECARBURIZATION Removal of carbon from the outer surface of iron or steel, usually by heating in an oxidizing or reducing atmosphere. Water vapor; oxygen and carbon dioxide are strong decarburizers. Reheating with adhering scale is also strongly decarburizing in action. |
| DEEP DRAWING The process of cold working or drawing sheet or strip metal blanks by means of dies on a press into shapes which are usually more or less cup-like in character involving considerable plastic deformation of the metal. Deep-drawing quality sheet or strip steel, ordered or sold on the basis of suitability for deep-drawing. |
| DEGASSING PROCESS (In steel making) - Removing gases from the molten metal by means of a vacuum process in combination with mechanical action. |
| DELTA IRON Allotropic modification of iron, stable above 2552??F. to melting point. It is of body-centered cubic crystal structure. |
| DEOXIDIZING Removal of oxygen. In steel sheet, strip, and wire technology, the term refers to heat treatment in a reducing atmosphere, to lessen the amount of scale. (See Controlled Atmosphere Furnaces.) |
| [1] 2 Next Last |