摘要:
A mold additive for use in continuous casting, which includes a base material having a chemical composition of CaO--BaO--SiO.sub.2 --F system, and contains 2-15% by weight in total of at least one carbonate of alkali and alkaline earth metals, 2-30% by weight in total of at least one fluoride of alkali and alkaline earth metals and 0.2-10% by weight of carbon, and, if necessary, 2-10% by weight in total of at least one oxide of Fe, Mn and Ni, and has a solidification temperature of not more than 900.degree. C. and a viscosity at 1,300.degree. C. of not more than 3 poises. The base material has a weight ratio of (CaO+BaO)/SiO.sub.2 of 0.6-2.5 and contains not less than 2% by weight of BaO and 2-15% by weight of F.
摘要:
A mold additive for use in the continuous casting is disclosed, which comprises a base material for slag having a chemical composition of CaO--SiO.sub.2 --Al.sub.2 O.sub.3 system, a flux and a carbonaceous aggregate. The mold additive contains 0.5-2.0% by weight of carbon black and 1-4% by weight of activated carbon with an average particle size of not more than 10 .mu.m as the carbonaceous aggregate, and has a bulk density of not more than 0.9 g/cm.sup.3.
摘要翻译:公开了一种用于连续铸造的模具添加剂,其包括具有化学组成为CaO-SiO 2 -Al 2 O 3体系的渣的基料,助熔剂和碳质聚集体。 模具添加剂含有0.5-2.0重量%的炭黑和1-4重量%的作为碳质骨料的平均粒度不超过10微米的活性炭,并且堆积密度不大于0.9 g / cm3。
摘要:
The width of a slab can be easily increased during a continuous casting operation by a simple method, wherein casting of a molten steel is temporarily stopped during the continuous casting operation, the narrow side of a casting mold is moved to a predetermined width, corresponding to the increased width to be of the slab, to form a space between the narrow side of the mold and the solidified shell of a slab, a closing member having a width 1-5 mm smaller than the increased width of the slab, and a cooling and sealing material are inserted into the space to form a clearance of 1-5 mm between the closing member and the narrow side of the mold, and the casting of the molten steel is again started.
摘要:
A continuous casting apparatus for the production of cast sheets having a casting space defined by a pair of opposed endless belts and a pair of side plates arranged near the side edge portions of the belts while being brought into intimate contact therewith and designed to be converged toward a drawing direction. In this apparatus, a filmy water flow-forming pad arranged behind each of the belts, and each of the side plates are so profiled that the casting space inclusive of the tapered portion depicts a smooth curve at at least a transition area from the taper end portion to a constant thickness portion.
摘要:
A method for the production of a magnetic head, where first a lower magnetic pole is formed on a wafer. Next, a nonmagnetic write gap layer is formed on the lower magnetic pole. A coil is then formed to be sandwiched between nonmagnetic insulating layers on the nonmagnetic write gap layer. Finally, an upper magnetic pole, provided with a pole tip, is formed to contact the write gap layer on the nonmagnetic write gap layer. After formation, a focused ion beam is irradiated in the direction from a thickness of the pole tip to the lateral parts of the pole tip, the nonmagnetic write gap layer lying directly thereunder. The lower magnetic pole thereby trims the lateral parts of the pole tip while consequently decreasing the width of the pole tip. At the same time, depressed parts are formed in the lower magnetic pole in the areas extending outward from directly below the lateral parts of the pole tip. The width of the pole tip is then equalized and a width of the lower magnetic pole is sandwiched by the depressed parts. Lastly, a protective layer is formed, which is made of a nonmagnetic insulating material, fills in the depressed parts, and, at the same time, covers the upper magnetic pole and the lower magnetic pole.
摘要:
A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacted the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flatted.
摘要:
A storage device includes a substrate, a magnetic storage medium provided on the substrate, information being magnetically stored in the magnetic storage medium, a head unit, and a reciprocating mechanism provided on the substrate, the reciprocating mechanism causing the head unit to reciprocate in a plane parallel to a surface of the magnetic storage medium, wherein, while the head unit is being moved by the reciprocating mechanism, information is recorded in or reproduced from the magnetic storage medium via the head unit.
摘要:
A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacting the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flattend.
摘要:
A plan or vertical type thin film magnetic head is produced by a process comprising the steps of: forming a gap separator layer of a non-magnetic material on the surface of a substrate, while the forming process is not limited to plating; forming a mask layer on the gap layer; patterning the mask layer to form a shield; etching the gap layer, while the shield functions as a mask, thereby forming a gap wall having a width narrower than that of the shield independent of the resolution degree of the resist; forming a magnetic pole layer of a soft magnetic material on the surface of the substrate by exposing the resist at a time, thereby the formed magnetic pole layer being separated by the gap wall; and, utilizing the gap wall as a magnetic pole gap of the magnetic pole layer.
摘要:
To suppress the thermal asperity in the magneto-resistive effect type head for carrying out the reproduction of signals from the recording medium by the element 2 while moving, in a flying or contact state with the recording medium, in a predetermined direction relative to the recording medium. A step 20 or a protrusion 21 which is closer to the recording medium than the element is provided on the air bearing surface of the head in an area on the leading side of the element with respect to the moving direction of the head.