Several types of descaling processes are used for removal of scale from the surface of the hot rolled steels. These descaling processes are usually classified into four categories. These are (i) flame cleaning process, (ii) mechanical descaling processes, (iii) hydraulic descaling process, and (iv) chemical descaling processes.
Descaling In Hot rolling Mills Scale is formed during hot rolling of ferrous metals resulting in a high wear rate of the rolls and subsequently deterioration of the quality of final rolled product. In the case of drop forged products, removal of scale ensures longer life of dies as well as good surface finish.
Water descaling unit for rolling mill In its program, Production and Engineering Company ENCE (ЭНЦЕ ГмбХ) highlights the most significant metallurgical equipment; this equipment complies with the highest international quality standards and may be offered to customers at competitive prices. Description
Descaling device and method. A descaling device for slabs or strips in hot rolling mills includes nozzles fed by a pressurized water piston pump for directing water jets against the slab or strip for removing scale adhering to the surface of the slab or strip. At least one additional pressurized water piston pump is provided, wherein the piston ...
In the hot strip mill, the slab is brought to temperature in the reheating furnace and discharged for rolling. To break the primary scale, the slab is passed through a slab descaler before the reversing roughing mill. A secondary oxide scale is inevitably formed between successive rolling passes dur-ing hot rolling, which is further removed by ...
UTPSL provide High Pressure Descaling System for removal of scale from hot metal before rolling in steel plants.Descaling Systems can be designed for Billet,Slab,Plate,Bloom Forging, Seamless Pipe,Profiles etc for Primary descaling
Descaling of heated slab is a must in the hot strip mill for attaining good surface quality of the hot rolled strip. Descaler operation need to be optimize in order to ensure maximum scale removal and hence enhanced cleaning at minimum cooling of the heated slab.
Hot Rolling Mill Other Applications DNX Descaling Nozzles Features Shapes & dimensions Higher impact force and deeper erosion for more efficient scale removal. Lower water consumption with the same impact of existing descaling nozzles. Sharper spray edge definition for optimized descaling perfor-mance. Maximum working pressure 25 MPa n n n 150 ...
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 high-pressure water spraying prior to the actual hot rolling process.
DESCALE-MASTER. High-pressure water descaler. BENEFITS. Total descaling solutions for the entire rolling mill. Optimized and right-sized pumping stations. Designed to achieve maximum impact with optimal water and power. Maintenance and operator-friendly design. Reduced cost of operation. Totally scale-free products with reduced conversion costs.
Descaling with the Aid of High-Pressure Water Descaling Steel hydromechanically With KAMAT high-pressure pump systems, slabs and billets in rolling mills can be efficiently descaled hydromechanically. With the annealing of steel, oxygen reacts with iron on the hot metal surface. Iron oxides, so-called scale, arise.
Performance Modules related to hot rolling mills are e.g. camber free rolling, modular laminar strip cooling system, new edge masking and intelligent components. The Performance Modules treated in the paper are presented according to material flow as follows: (1) Newly designed slab and strip descaling systems equipped with frequency
2. The descaling in hot rolling of steel material according to claim 1, wherein the header (1a, 1b) is divided into two in the width direction of the steel material, and the header (1a, 1b) is arranged so as to be shifted forward and backward with respect to the traveling direction of the steel material (4). apparatus.
Within the hot rolling mill, descaling equipment is placed before the mill or after the mill stand and it takes the low pressure water from the plant water supply, creates high pressure water, which is sprayed onto the surface of the hot steel to remove the scale.
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 …
Billet descaling. Sep 11,, The sound of a billet being descaled Shot blasting machines are used for descaling billets in readiness for the next operation, which is rolling, the process of removing iron oxide scale layers from the hot steel surface by the, in a so-called descaling box (or 'mill descaler') through which the billets travel.
descaling system for hot rolling mill akustyczne.pl. descaling system for hot rolling mill . Descaling Lechler. 01/06/2016 In hydro-mechanical descaling processes the jets are formed by special descaling nozzles which are arranged on spray headers in a so called descaling box (or mill descalers) through which the
High Pressure Descaling before the Finishing Mill. For wear reduction and better water drain inside the descaler box we received the order to modernize the descaling unit on the entry side of the finishing mill. We reused the existing rotating descaling system. The box was designed to allow experiments with descaling headers with Scalemaster ...
The control system for descaling hot-rolled sheet mill Scientific adviser: Ph.D., Associate Professor Alexey Shushura . Abstract. The control system for descaling hot-rolled sheet mill. Contents. Introduction. 1. Overview and analysis the current approach to …
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 well-tuned measures are taken in all process steps.
HOT ROLLING MILLS DESCALING SECTION TABLE OF CONTENTS PLACING YOUR ORDER Call your local steel specialist for application assistance or to place an order. DESCALING NOZZLE QUICK REFERENCE GUIDE Model Flow Rate Range at 2000 psi (138 bar) gpm (lpm) Max. Operating Pressure psi (bar) Spray Angle Orifice Material DescaleJet®Pro
Descaling is a key process of hot rolling, especially when a good surface quality of the hot rolled products is demanded. Many studies have been made on the descaling technique of the hot strip mill (HSM) process (1-3). The key descaling parameters include the facility, the descaling performance and the descaling conditions (Figure 1).
In hot rolling, efficient descaling is of major ... casting and rolling mills require higher water pressures in the hydromechanical descaling section than conventional hot strip rolling mills.
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