摘要:
An apparatus is disclosed for adjusting the inclination of the small sides in a mold for continuous casting, selectively in response to any variations of the mold sides as such, and in response to any variation of the gap between the casting emerging from the mold and the lower end thereof. A feedback loop operating in response to mold side inclination should be responsive to command input which are dependent upon the casting speed.
摘要:
Additives in the form of a wire-like object are introduced through a tube into the interior of molten metal bath. The wire in the tube is surrounded by a pressurized gas which prevents metal from entering the tube. Since the tube extends close to the bottom of the bath, the additives melt near that bottom and are distributed in the bath through convective flow.
摘要:
A casting powder for steel having, for example, ground blast furnace slag, and/or sand and caustic lime CaF.sub.2 as basic substances with further additives which include up to 10% of additives decomposing completely at temperatures below 600.degree. C under development of gas whereby the mole-volume of developed gas per mole-weight gas-generating additive (m.sup.3 /Kg) is not smaller than 0.5. Ammonium nitrite or ammonium carbonate is preferred whereby the gaseous decomposition products will be nitrogen, water vapor and/or carbon dioxide.
摘要:
Multiple castings are cut into billets, combined in a transverse transport facility, separate into billets to be inspected or not, recombined and cooled. Transportation includes two transverse facilities and two longitudinal facilities, combined in various combinations. The transportation is carried out with only one, or no, pivoting action and cooling is provided for alongside one of the multiple transport paths with overall accommodation to subsequent transport of billets out of the system.
摘要:
An electromagnetic stirring apparatus for stirring the liquid center core of a continuous casting. The casting is supported by and transported over guide rolls while a changing electromagnetic field is induced within the liquid casting core by induction coils positioned beneath the casting. Fingers of a stack of ferromagnetic plates form the cores of the induction coils and are positioned between the guide rolls and are close enough to the casting to induce a strong field therein.
摘要:
The apparatus includes a parallelogram-like foldable frame, opposite corners of which carry centering rollers to position the frame between two opposite track rollers; feelers measure the distance to the latter. The frame can be hung between the tracks or can be self-propelled by a belt drive. Some of the centering rollers can be used for reeling tests of the track rollers.
摘要:
The curvature of dual roller tracks is measured by centering a frame on two oppositely disposed rollers of the two tracks, and by measuring various distances and spacing parameters of the track rollers to both sides. The measurements are carried out through spindle drives and protractible feelers, all operated directly or indirectly in relation to a common reference point.
摘要:
The rolls of a curved withdrawal path for an ingot emerging from a continuous casting mold are resiliently yieldingly supported on the outside curved track as between bending and straightening points, while rolls continuing the inside track beyond the first point of straightening the ingot and into the horizontal are also yieldingly mounted, while the respective opposite rolls are rigidly mounted.
摘要:
A curved withdrawal path for a casting is outlined by widely spaced rolls cooperating with individual segments holding more rolls and being radially retractible. The widely spaced rolls and the rolls on the segments compliment each other so that all rolls on the withdrawal path are equidistantly spaced.
摘要:
A roller body is made of relatively low alloyed steel and sinter-coated for protection at a temperature up to 1000.degree. C; the coating is mechanically surface finished and the assembly is normalized and tempered followed by air cooling to enhance toughness and tensile strength of the roller body.