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scale pit in steel rolling mill

Water (scale) pit in steel rolling mill? Yahoo Answers

03/01/2010  Happy New Year to you all, however, I need to know more about water (Scale) pit in steel rolling mill like requirement fundamentals calculation, Est. Please if anyone has any idea or reference that can be useful please advice. Thank you in advance for your cooperation. Answer Save. 1 Answer. Relevance. Bazzman_nz. Lv 4. 1 decade ago. Favorite Answer. HSM only, 2 pits, first pit, the scale pit ...

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Mill scale - Wikipedia

Mill scale, often shortened to just scale, is the flaky surface of hot rolled steel, consisting of the mixed iron oxides iron(II) oxide (FeO), iron(III) oxide (Fe 2 O 3), and iron(II,III) oxide (Fe 3 O 4, magnetite).. Mill scale is formed on the outer surfaces of plates, sheets or profiles when they are being produced by rolling red hot iron or steel billets in rolling mills.

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Scale Pit In Steel Rolling Mill

Scale Pit In Steel Rolling Mill. Technical Report Deformation Behavior Of Oxide Scale In. 1 200C, and an oxide film called scale forms on the steel surfaces during heating and rolling. If steel is rolled with the scale on the surface, it leads to. Prices / Quote. The Hot Rolling Process California Steel Industries. The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat ...

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Prevention Red Scale Formation during Hot Rolling Steels

lrrespective of Si content in steel. thehot rolled strip surface becamered when scale thickness before rolling was above20,tm and the rolling temperature was below 900'C. It was found that surface ...

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_010703.DOC.

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What exactly is Mill Scale and what is done about it

In a rolling mill where the steel will be stretched and squished the mill scale will first be removed mostly by water jets, or by sand blasting in some shops or by vibrating rolls in others and the mill scale will fall into a pit below the equipment where it will also be joined by rolling mill lubricants and bearing oils and water. From there it will be pumped to a holding pond, where ...

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Rolling Mill Scale Pit - mayukhportfolio.co

scale pit in steel rolling mill. M/s. Saini Indusries Limited, Vill - Siltara, Dist. - Raipur (C.G.),annum by additional Rolling Mill of capacity 10b000 tonnes per annum (Total capacity after ...

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_010703.DOC.

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Production of cleaner mill scale by dynamic separation

01/03/2018  The descaling water and the cooling water wash the mill scale away from the steel surfaces, flow with the mill scale into the flumes underneath the rolling lines, run at a high speed in the flumes and eventually are discharged into the deep and wide mill scale pits. The wastewater in the mill scale pits becomes fairly calm. By gravity, the mill scale settles down to the bottom of the pits. The ...

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Macro Defects in Steel - Rolling Defects

Medium scale (scale pits) - Hot strip mill - Rolling defects Methods for preventing defect propagation - Rolling defects Multiple cracks - Hot rolled products - Rolling defects Multiple cracks - Hot rolled products - Rolling defects Non-metallic inclusions - Heavy plate defects - Rolling defects Oil mark - Rolling defects One-side edge waves - Heavy plate defects - Rolling defects Orange peel ...

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Development of a water treatment plant for a rolling

rolling-mill train is 90 Tonnes/hour, and we estimate a formation of scale equal to 0.2% of the production total, the maximum amount of scale that the contact water will remove is 18 Kg/hour, with ...

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Rolling of steel in Hot Strip Mill – IspatGuru

03/12/2015  In a continuous HSM, the roughing mill is usually made up of six independent rolling mill stands, the last four to five of which incorporate small vertical rolling mills called edgers. Heated slabs are rolled through one stand at a time to produce so-called transfer bars suitable for finish rolling. High-pressure water-jet nozzles clean the oxidized iron, or scale, from the surface along the ...

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Rolling (metalworking) - Wikipedia

Most steel mills have rolling mill divisions that convert the semi-finished casting products into finished products. ... This is done in a gas- or oil-fired soaking pit for larger workpieces; for smaller workpieces, induction heating is used. As the material is worked, the temperature must be monitored to make sure it remains above the recrystallization temperature. To maintain a safety factor ...

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water scale pit in steel rolling mill - ME Mining Machinery

scale pit working in rolling mill greenplanetfax. water scale pit in steel rolling mill. Steel MiniMill Industry Plant Gains Efficiency by Replacing Vacuum Loed in Portage Ind. Beta Steel is a steel mini mill that periodically vacuum the oil out of the water as it sat scale pit that was added during a rolling mill.

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scale pit steel rolling mill - psychologwroclaw

scale pit in steel rolling mill. M/s. Saini Indusries Limited VillSiltara Dist.Raipur (C.G.) annum by additional Rolling Mill of capacity 10b000 tonnes per annum (Total capacity after . Chat Online; Mill scaleWikipedia. Mill scale is formed on the outer surfaces of plates sheets or profiles when they are being produced by rolling red hot iron or steel billets in rolling mills. Mill scale is ...

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Technical Report Deformation Behavior of Oxide Scale in ...

The existence of scale during hot rolling between steel and rolling rolls has significant effects on the tribology,1–4) heat transfer,5) ... scale thicknesses before rolling on the No. 2 Mill by changing the transfer time between the mills. Figure 3 shows example photographs of scale surfaces. Here, test pieces (a) and (b) were heated to 1 020 and 1 080°C, respective- ly, rolled on the No ...

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_010703.DOC.

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23. GENERAL VIEW LOOKING SE, SCALE PIT IN

Photo, Print, Drawing 23. GENERAL VIEW LOOKING SE, SCALE PIT IN FOREGROUND LEFT. - John A. Roebling's Sons Company, Kinkora Works, Steel Rolling Mills, Roebling, Burlington County, NJ Photos from Survey HAER NJ-122-A

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Rolling of steel in Hot Strip Mill – IspatGuru

03/12/2015  In a continuous HSM, the roughing mill is usually made up of six independent rolling mill stands, the last four to five of which incorporate small vertical rolling mills called edgers. Heated slabs are rolled through one stand at a time to produce so-called transfer bars suitable for finish rolling. High-pressure water-jet nozzles clean the oxidized iron, or scale, from the surface along the ...

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Recycling of steel plant mill scale via iron ore sintering ...

Mill scale is formed during steel continuous casting and the rolling mill steps, when steel is submitted to thermal gradients in oxidant atmospheres, promoting the growth of a layer of iron oxide ...

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Water descaling unit for rolling mill

High-pressure piping will be made of pipe steel, in order to connect pipe flow to the valves for descaling and complete with heavy-duty PP clamps, fittings, hoses, etc. Descaling speed on the liner = 1.5–4 m/sec. Water descaling unit operates according to the required rolling speed/ mill capacity

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Rolling (metalworking) - Wikipedia

Most steel mills have rolling mill divisions that convert the semi-finished casting products into finished products. ... This is done in a gas- or oil-fired soaking pit for larger workpieces; for smaller workpieces, induction heating is used. As the material is worked, the temperature must be monitored to make sure it remains above the recrystallization temperature. To maintain a safety factor ...

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Steel Mill Jobs – A Hardworking History and a Lasting ...

03/10/2017  Charger operators were responsible for moving the steel ingots into soaking pits, where they were reheated for rolling. The steel stayed heated at temperatures of up to 2450° F for up to 14 hours. At this point the ingots were ready for rolling or shaping into billets, blooms, and slabs. Bottom makers did the job of relining the bottom of the soaking pits with coke oxide dust to prevent the ...

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Water Requirements of the Iron and Steel Industry

In operations such as rolling steel in which the water comes into contact with the steel being processed, better quality water is used, although water containing as much as 3,410 ppm dissolved solids has been used for this purpose. Treatment of water for use in the iron and steel industry was not widely practiced. Disinfection and treatment for scale and corrosion control were the most ...

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Hydrogen fuel can help steel industry reduce emissions ...

And earlier this year, Hofors was the scene of yet another important step in the steel industry: the first-ever full-scale test of heating steel using hydrogen as a fuel and oxygen as an oxidant before rolling. Carried out as part of a cooperation between Ovako and Linde, the test took place in one of Ovako’s pit furnaces at the Hofors rolling mill and had important implications for the ...

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