摘要:
A roll (1) for supporting and conveying hot material, including a roll element that has a roll jacket (2) made of a basic material and a wear coat which is applied to the basic material by means of a surface welding process (4) using a welding additive which surrounds the surface of the roll jacket. In order to increase the service life of the wear coat, improve the resistance to wear, and reduce the cost for producing the welded-on surface. The basic material of the roll jacket (2) is steel and contains up to 0.45 percent of C. The welded-on surface (4) is designed as a single-layer weld, and the wear coat contains 12.5 to 14.0 percent of Cr at least in an external zone that surrounds the surface of the roll jacket. Also disclosed are a method for producing the roll (1), a method for repairing a used roll (1), a welding additive and a welding rod for producing the welded-on surface.
摘要:
A roll (1) for supporting and conveying hot material, including a roll element that has a roll jacket (2) made of a basic material and a wear coat which is applied to the basic material by means of a surface welding process (4) using a welding additive which surrounds the surface of the roll jacket. In order to increase the service life of the wear coat, improve the resistance to wear, and reduce the cost for producing the welded-on surface. The basic material of the roll jacket (2) is steel and contains up to 0.45 percent of C. The welded-on surface (4) is designed as a single-layer weld, and the wear coat contains 12.5 to 14.0 percent of Cr at least in an external zone that surrounds the surface of the roll jacket. Also disclosed are a method for producing the roll (1), a method for repairing a used roll (1), a welding additive and a welding rod for producing the welded-on surface.
摘要:
In the case of a strand guiding roller with at least one roller shell and with at least two supporting shafts, two supporting shafts being respectively connected in a rotationally fixed manner to a roller shell and each supporting shaft being rotatably supported in a supporting bearing, to achieve a type of construction that is simple and can withstand the high thermal and mechanical loading that occurs, it is proposed that the roller shell is connected in a rotationally fixed manner to the supporting shafts carrying it on both sides by shrink-fit connections or by press-fit connections.
摘要:
An internally cooled strand-guiding roll for a continuous casting installation, having a central rotatable shaft and at least one roll shell supported fixed against rotation on the shaft. To make the strand-guiding roll better able to withstand the mechanical and thermal stresses, to ensure that it is suitable for large strand widths and to enable maintenance work to be carried out, the roll shell has coolant passages passing through it, and the coolant passages are arranged in the roll shell at a constant distance from the cylindrical roll shell outer surface of the roll shell and preferably at the area between the shaft and the roll shell. It is preferable for at least one water guide ring to be arranged between the roll shell and the central shaft.
摘要:
In the case of a strand guiding roller with at least one roller shell and with hat least two supporting shafts, two supporting shafts being respectively connected in a rotationally fixed manner to a roller shell and each supporting shaft being rotatably supported in a supporting bearing, to achieve a type of construction that is simple and can withstand the high thermal and mechanical loading that occurs, it is proposed that the roller shell is connected in a rotationally fixed manner to the supporting shafts carrying it on both sides by shrink-fit connections or by press-fit connections.
摘要:
An internally cooled strand-guiding roll for a continuous casting installation, having a central rotatable shaft and at least one roll shell supported fixed against rotation on the shaft. To make the strand-guiding roll better able to withstand the mechanical and thermal stresses, to ensure that it is suitable for large strand widths and to enable maintenance work to be carried out, the roll shell has coolant passages passing through it, and the coolant passages are arranged in the roll shell at a constant distance from the cylindrical roll shell outer surface of the roll shell and preferably at the area between the shaft and the roll shell. It is preferable for at least one water guide ring to be arranged between the roll shell and the central shaft.
摘要:
A device for interchangeable connection of a casting tube to a spout of a melt vessel with a sliding closure fastened on a melt vessel. The closure is formed by at least one stationary closure plate and a closure plate that can be displaced relative thereto, wherein the displaceable closure plate is coupled to a sliding drive system and carries the casting tube. To improve the changeover process of a casting tube and to make it safer, the displaceable closure plate carries a connecting ring for the centered accommodation of the casting tube and the displaceable closure plate carries a changing device for the casting tube. The changing device is synchronously displaceable with the displaceable plate. A tensioning device presses the casting tube onto the displaceable closure plate.
摘要:
A device for interchangeable connection of a casting tube to a spout of a melt vessel with a sliding closure fastened on a melt vessel. The closure is formed by at least one stationary closure plate and a closure plate that can be displaced relative thereto, wherein the displaceable closure plate is coupled to a sliding drive system and carries the casting tube. To improve the changeover process of a casting tube and to make it safer, the displaceable closure plate carries a connecting ring for the centered accommodation of the casting tube and the displaceable closure plate carries a changing device for the casting tube. The changing device is synchronously displaceable with the displaceable plate. A tensioning device presses the casting tube onto the displaceable closure plate.
摘要:
In a continuous-casting apparatus with a mold-supporting device (4) and a mold (1) mounted to oscillate relative to the supporting device, the mold (1) is supported via guide elements (7, 10) extending approximately transversely to the direction of oscillation arranged approximately parallel to one another and, relative to the direction of oscillation (III), at a distance (12) one above the other. At least one first guide element (7) extends from the mold-supporting device (4) towards the mold (1) in a first direction (I) and at least one second guide element (10) extends from the mold-supporting device (4) towards the mold (I) in a direction (II) opposite to the first direction (I).