An improved roll cooling, roll seam lubrication device, an improved roll cooling, roll seam lubrication device, belongs to the technical field of rolling mill. Used to solve the existing device exists in the lubricant film is not uniform, easy to mix into the residual cooling water and other defects. Composition is located in the roll seam entrance on the upper and lower cut water plate, arranged in the upper and lower cut water plate on the lower cooling set of tubes, arranged in the upper and lower cut water plate at the lubrication set of tubes, improve the lubrication set of tubes arranged in the upper cut water plate above and below the lower cut water plate. The utility model can make the lubrication set of tubes sprayed to the uneven lubricant on the roll surface through the upper and lower cut water plate scraping treatment, so as to form a uniform oil film; lubrication set of tubes can be kept away from high temperature rolls between rolls, eliminating high temperature baking triggered by the nozzle scaling and clogging phenomenon; lubrication effect can be improved to improve the roll seams and thus improve the rolling parts, especially the plate, with the rolling parts of the surface quality, and enhance the service life of rolls; lubrication set of tubes is suitable for the mill, especially in the rolling mill, especially the plate, with the surface quality of the rolling parts, and enhance the service life of the roller. Suitable for installation and use in rolling mills, especially plate, strip hot rolling in the finishing mill.

A metallurgical hot roll surface laser nano-ceramic alloying process, a metallurgical hot roll surface laser nano-ceramic alloying method, characterized in that it includes the following process: machining rolls to remove the surface fatigue layer, to get the required size and shape, and then the laser will be irradiated side of the grinding, de-oiled and properly cleaned; with a phenolic resin binder will be mixed with nano-carbide ceramic coatings Homogeneous, and then evenly coated in the pre-treated roll surface, pre-coating thickness of 0.01 ~ 0.05mm, and then air-dry; selection of high-power CO2

Improved roll with nickel-chromium-molybdenum infinite cold hard cast iron and composite rolls, is on the metal processing hot rolled, cold rolled sheet and strip roll material - nickel-chromium-molybdenum infinite cold hard cast iron improvement, especially involving a wear resistance and heat crack resistance performance, long service life of the roll with nickel-chromium-molybdenum infinite cold hard cast iron, characterized by nickel-chromium-molybdenum infinite cold hard cast iron added to the composition of the nickel-chromium-molybdenum infinite cold hard cast iron with a 0.5-0.05mm thickness. The cast iron is characterized by the addition of 0.03-0.1% boron and 0.2-1.5% niobium to the composition of the nickel-chromium-molybdenum infinite cold-hard cast iron. and composite rolls made from this material. As a result of the addition of boron and niobium, the wear resistance and resistance to thermal cracking of the material is significantly improved, overcoming the lack of raw materials. This material for the working layer made of composite rolls, service life than the original greatly improved, so that the rolling capacity of the strip increased by more than 20%; the improvement of the performance of the anti-thermal cracking, significantly reducing the number of downtime to change the rolls to repair, not only reduce the operating labor intensity, but also improve the operating rate of the mill to increase the shift rolling output.