摘要:
A method for surface treating work rolls to produce isotropic textured aluminum sheet features indenting the surface of the working rolls that produce the sheet with spherical media such as steel ball bearings having the requisite properties to avoid fracture and resulting in a smooth surface lacking facets. The spherical media can be introduced into a nip between two rolls and indent by compression, but ultrasonic peening or knurling. The aluminum sheet produced by the roll has properties that facilitate mechanical forming, such as when the sheet is processed by forming tools.
摘要:
A roll cleaning apparatus having a cleaning member mounted to a support member that extends lengthwise relative to a first roller of the machine. The cleaning member has a brush having a substantial area to place against the surface of the roll. The cleaning member may be movable between an engaged position against the roll during operation, and a disengaged position spaced away from the roil in a non-operating condition, such as when replacement of the cleaning member is desired. The roll cleaning apparatus may include a drive connected to cause linear reciprocation of the cleaning member. The roll cleaning apparatus may have a drive or actuator mounted to move the cleaning member between the engaged and disengaged positions, and may be operable to bias the cleaning member against the roll in use. The roll cleaning member may have a contact head that includes an array of abrasive bristles.
摘要:
Method (100) for the classification of defects and running of the grinding of lamination cylinders comprising the following phases which consist in: a) identifying defect areas in a map illustrating a plurality of surface measurements of a cylinder; b) calculating, for each defect area identified, a plurality of typical parameters; c) identifying a type of defect associated with said defect areas identified, on the basis of said parameters calculated; d) determining (120) an acceptability threshold of the specific defect for each type of defect identified; e) defining (130) a corrective action for each defect area on the basis of the comparison between said acceptability threshold associated with the type of defect of said defect area, and a measurement of said plurality of surface measurements of the cylinder associate with said defect area; f) determining (140) grinding parameters on the basis of said surface measurements of said cylinder, if the corrective action defined in phase c) is a grinding operation to remove the defects.
摘要:
A method and apparatus for simultaneously inspecting and grinding roll mills which utilizes a transducer assembly which produces a creeping wave propagation in conjunction with a couplant fluid provider and data acquisition circuit which allows the operator to see the crack and imperfections in on the surface of the mill rolls as they are rotated and to grind them off.
摘要:
In a plural-roll rolling mill having a pass line arranged by the respective sets of rolls, each having a caliber formed on the outside peripheral surface thereof, the outside peripheral surfaces being disposed close to each other, the calibers of the rolls being cut with a cutting tool of a three-dimensionally (forward and rearward, rightward and leftward and upward and downward) movable cutting machine. The rolling mill, which has a reference column disposed on the outside surface thereof at a position spaced apart from the pass line by a predetermined distance, is removed from a rolling line and fixed, and the positional alignment of the cutting tool is carried out by causing a contact sensor disposed on the cutting machine at a position spaced apart from the cutting tool by a predetermined distance to come into contact with the reference column. With this arrangement, there are provided a method and apparatus capable of cutting the rolls of the plural-roll rolling mill while mounted on the rolling mill.
摘要:
When rolls in a rolling mill are repaired, a roll stand is first dismounted from the rolling mill. Then the dismounted roll stand is secured and the rolls are brought near to a housing of the roll stand in the axial direction of the roll. In this situation the rolls are cut. After the rolls have been cut, the roll stand is released from being secured. Then the roll stand is mounted on the rolling mill.A cutting apparatus used for cutting rolls comprises a base frame and a stand mounted on the base frame for placing the roll stand thereon. The housing of the roll stand placed on the stand is secured against the base frame. Furthermore, the rolls of the roll stand are brought near to the housing in the axial direction of the roll and are located. In the situation located against the housing, the rolls are rotated by a roll rotating apparatus and cut with a cutting tool.
摘要:
Disclosed is a grinding machine for use with a rolling mill capable of carrying out the continuous grinding operation of the cylindrical or rolling surface of a work roll without removing the work roll from the rolling mill while the continuous rolling operation is being carried out, whereby labor saving can be attained and the downtime of the rolling mill can be remarkably reduced.