hot roll mill descaling system
The water descaling system uses high pressure descaling pumps magne
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The water descaling system uses high pressure descaling pumps magne
Descaling Systems. The scale on steel surface is being produced due to oxidation of base material during reheating of the billet / material. To prevent this layer from fusing into base material during rolling process, Descaling system is used. The scale gets loosened when High pressure water jet strikes the surface between scale and base material with high pressure through strategically placed nozzles at
Typically, the descaling system in the Hot Strip Mill is very effective at removing primary (from the furnace) and secondary (regrown during roughing rolling) scale. Cropping Because a square headend is critical to properly threading the finish mills and the downcoilers, and because an uneven tail can
Descaling system on/off valve (24 V DC) with inbuilt system of valve filling for an injection ring in order to avoid hydraulic shock during unloading mode, protective device ; Scale collecting box, with upper and lower nozzles manifold, sector control for slab width adjustment (1600 or 2570 mm), installed after the furnace, approx. length 3500 mm,
HOT ROLLING. Optimal steel quality depends on optimal spray technology. Spraying Systems Co. offers a wide range of superior nozzles and headers for descaling and cooling along with local steel experts to assist you with product selection, cooling calculations, specialized testing and more. For decades weve helped hot rolling mills around the world improve steel quality, reduce downtime and operating
rolling in the mill stand. This scale removal is undertaken in the Primary Descaling Unit which is located immediately downstream from the reheat furnace and before the rolling mill stand. PRIMARY DESCALING TECHNOLOGICAL PACKAGE FOR BETTER PLATE SURFACE YOUR CHALLENGE Modern Plate Mills are required to produce wider, thinner
We have created an entire descaling plant for a customer steel mill, an international leader in sheet metal manufacturing.. The descaling system has a fundamental function inside a hot rolling mill plant: it eliminates the slag or the surface calamine present on the metal by projecting metallic grit. In addition to superficially cleaning the sheet metal, the descaling system, equipped with 600
atmosphere and the exposure time. There are two kinds of scales relevant in rolling mills sticky and dry scales. Sticky scales can be removed most effectively by use of high pressure water jets upto 450 bar. Dry scales can be removed from the surface by application of descaling systems with low distances of the descaling nozzle to the material.
There can be a number of reasons for conducting a detailed descaling system audit. The most common are: Identify product quality defects and to eliminate them. Improve descaling performance by increasing the impact. Improve maintenance friendliness and reduce costs. Reduce water flow and hence temperature loss of rolled product.
The reversing roughing mill is composed of one vertical, socalled edging mill stand and one horizontal twohigh mill stand. The primary scale developed during heating and the secondary scale developed during roughing is removed from the slab surface by the descaling system that operates with industrial water at pressure of 140 bars.
heat for rolling. In part because further descaling is not particularly practical once finish rolling begins, the #2 Scale Breaker is the last opportunity to remove oxidation before the finished hotrolled strip is coiled. Typically, the descaling system in the Hot Strip Mill is very effective at removing primary (from the furnace) and secondary (regrown during roughing rolling) scale.
13/05/2016#0183;#32;Hauhinco has been contracted by a customer to engineer a descaling system for a new rolling mill for stainless steel panels. The new descaling system should reach the best power and energy efficiency combination for the current requirements but should also have enough reserves for future work piece sizes. Hauhinco mastered this challenge through an indirect drive solution consisting of a
S MIE AG Hot Flat Rolling Mills 2 SMS Siemag does not treat descaling as an isolated measure but as an integral part of the process chain from continuous casting through hot and cold rolling up to final strip processing. Strips with an excellent surface quality can be produced only if welltuned measures are taken in all process steps.
Owen, R. J., Porretta, S., Grosvenor, Roger Ivor and Prickett, Paul William 2009. Upgrading the Descaling System in a Hot Rolling Mill A Practical Method for Quantifying the Descaling Systems Reliability. Presented at: 5th European Rolling Conference, The Institute of Materials, Minerals and Mining, London, UK,
The descaling system has a fundamental function inside a hot rolling mill plant: it eliminates the slag or the surface calamine present on the metal by projecting metallic grit.
As with, the roughing mills descaling system, for some thinnergauge, wider, and/or stiffer products, the lowpressure header is disabled to conserve heat for rolling. In part, because further descaling is not particularly practical once finish rolling begins, the #2 Scale Breaker i s the last opportunity to remove oxidation before the finished hotrolled strip is coiled.
01/06/2016#0183;#32;Regarding hot rolling of steel, the quality of the rolled metal surfaces depends to a large extent on effective descaling. In order to avoid surface damage, iron oxide scale layers are therefore removed from the hot steel surface by highpressure water spraying prior to the actual hot rolling process. The selection of the best descaling nozzles and their optimum arrangement in the process is therefore
HOT ROLLING. Optimal steel quality depends on optimal spray technology. Spraying Systems Co. offers a wide range of superior nozzles and headers for descaling and cooling along with local steel experts to assist you with product selection, cooling calculations, specialized testing and more. For decades weve helped hot rolling mills around the world improve steel quality, reduce downtime and
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