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appli ions of steel strip rolling mill

Molten steel refined in the converter is solidified in this process to produce billets of a given shape. The molten steel discharged from the converter is continuously poured with a ladle into a mold below for cooling. After the steel is cooled and solidified, it is cut to a given length before it is conveyed to the rolling process for shaping...of blooms, billets, slabs, strip, bars, plates, sheets, rails, structural shapes, tubing, and pipes.ll Structural Steel Rolling mills convert hot steel ingots into various shapes for different uses. Rolling is the process by which structural steel is made . Before the ingots can be taken to the rolling mill they mus t be

Integrated Steel Producers . Integrated steel producers depend on scrap as their source of iron. They can make the same range of semi-finished (slabs, blooms and billets) and finished steel products as the larger iron and steel integrated producers (hot- and cold-roll strip, plate, rod, bars, shapes)...1.7 Rolling mill control: Production of continuous sheets and strips is one of the attractive features of modern rolling mills. However, control of sheet thickness and cross-section is a real challenge. In order to continuously monitor the thickness of sheets rolled, x-ray or gamma ray sensors are used.

elasto-plastic equations for the strip. The application of this work to the final tandem mill stands for tin plate mills showed roll indentation as the major departure from the classical models. Early studies of steel temper rolling by Carlton et al. 1978 ') highlighted the highly sensitive nature of rollgap models using this approach...In the process of Rolling the most significant aspect is the generation of heat through friction and deformation in the roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product.

to roll thin hot strip in a finishing mill of a CSP line and in a conventional hot-strip mill. The goal is to achieve improved strip thickness performance and operational stability. Primetals Technologies has developed a new control concept for rolling ultra-thin hot-rolled strip in the finishing mill of an ESP line...cold rolling was eased up gradually ; The fact that the production of cold rolling stainless steel strip (B>= 600mm) reached over 900,000 tons had greatly changed the situation that China mainly depended on the import of cold-rolled stainless steel strip . 1.2, The characteristics of development and change in Chinese stainless steel market

Steel Rolling Mill nearing completion. 1967 on March 20th, the 1 st bundles of un-ribbed, plain 260 grade re-bars rollout from the steel mill, spearheading a new chapter in the infrastructure development of the country. 1969 A masterpiece of Architecture by Jeffry Bawa, Sri Lanka's 1 st steel headquarters...The roll welding experiments were carried out using a laboratory rolling mill with a loading capacity of 15 tons. The roll diameter was 100 mm, and the rolling speed (ω) was 22 rpm corresponding to a peripheral speed of 115 mm s −1.The coefficient of friction (μ) between strips and roll was determined equal to 0.2.The loosely packed aluminum/aluminum combination …

ion. This model could successfully predict the rolling force, torque and pressure. Knight et al.6,7 simulated the hot strip rolling process using an elastic–plastic plane strain finite element (FE) model. They studied the effects of asymmetrical factors, rolling parameters and roll speed mismatch on the strip curvature. Philipp...Abs ract: The focus of this p per is on the hot rolling stage of a steel producing company. We analyze the synchro ization p oblem of non-identical reheat furnaces and the hot rolling mill. The task is to set the feed-in and rop-out times of slabs to different types of reheat furnac s to reduce the dispensable energy consump ion and increase ...

Two-High: Generally, a 2-HI mill is used for hot or cold breakdown and finishing of bar, sheet or strip. A wide range of sizes with separating force capacities from 10,000 lbs. (4.53 MT) to over 3,000,000 lbs. (1360 MT) are available. Three …...0.100 mm. Rolling speeds (meters per min) ~ 100. ~1000. ~2000. Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill to control thickness to high tolerances.. Some of the key AGC input parameters are speed and tension.

roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand. Figure 3. depicts the effects of eccentricity on the output strip thickness [6]. When the entry strip is passed through the roll stand with 4.1. the velocity . v. in...The plate mill is mainly equipped with the walking-beam continuous reheating furnaces, high-pressure descaling box, 4-high reversing rolling mill with hydraulic AGC system, γ-ray thickness gage, 24m-long on- line accelerated cooling system, 3600-tonleveler, rolling-disc type cooling bed, on-line automatic ultrasonic testing system, and normalizing furnace.1 million …

HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways. To remain competitive, new and existing mills must meet this challenge in the best …...practice. Accuracy of dimensions, particularly of hot rolled steel products, is influenced by many factors, such as mill design, heating practice, reduc-tion between passes, roll wear, roll pressure, composition of steel, and standard tolerances. Therefore, all weight tables should be used for estimating purposes only. Sec . S Page 1

The main types of plants involved in iron and steel industry are sintering plants, blast furnaces and steel works, direct reduction plants, ferroalloy production, rolling, scarfing, pickling, iron and steel foundry, and other technologies, such as argon - oxygen decarburization, ladle metallurgy vacuum degassing. Coking plants are considered here...In order to improve the flatness of hot rolled thin gauge steel strip, a new type of roll contour configuration was developed for a four-high temper rolling mill based on the finite element method analysis. The roll contour configuration consists of a variable contact back-up roll contour and a positive crown work roll contour.

Flat Rolling •Roll Force: F= LwY avg •Roll-strip contact length L •Average strip width w –despite the fact that spreading, or an increase in width, may actually occur if edger mills are not used •Average true stress of the strip in the roll gap Y avg •Assumes no friction and thus predicts lower roll force than the actual value...These castings are rolled to the required dimensions by the rolling mill to produce steel products. The smelting and refining process for iron and steel in the BF-BOF process involves the carbon reduction of iron ore (Fe 2 O 3 ) in the …

2. The Evolution of Microstructure in the Hot Rolling Process The layout of the hot strip mill of voestalpine Stahl is shown in Fig. 1. Slabs are heated to rolling temperature in the reheating furnace, subsequently descaled and rolled in the roughing stand to the transfer bar thickness and - after a second descaling step -...A commonly used metric to quantify the strip profile is the strip "crown", denoted C(x).The strip crown is defined as the difference between the thickness, H(0), at the strip center, and the thickness, H(x), at an arbitrary location x, as indicated in the following equation (1) C (x) = H (0) − H (x) Because of end-user requirements to evaluate the difference in strip thickness at …

Definition of Rolling process: Rolling is defined as a process to form metals where the metal strip is pressed by two or multiple rollers, thus the uniform thickness is formed. To do this, the temperature is essential. There are two types of processes. One …...hot strip and cold-rolling mills. Gauging equipment provides precise, real-time measurements during high-speed production of steel plate and sheet to help you meet the tightest tolerances while maximizing raw material use. There are coating weight gauges to ensure coating uniformity and product quality, thickness gauges to help increase

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