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[4] Simão J, Aspinwall D K, Wise M L H and El-Menshawy M F 1994 Mill roll texturing using EDT Journal of Materials Processing Technology 45 207-14. Crossref Google Scholar [5] Elkoca O 2008 A study on the characteristics of electrical discharge textured skin pass mill work roll Surface and Coatings Technology 202 2765-74. …
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DOI: 10.1016/J.SURFCOAT.2007.10.004 Corpus ID: 136822716; A study on the characteristics of electrical discharge textured skin pass mill work roll @article{Elkoca2008ASO, title={A study on the characteristics of electrical discharge textured skin pass mill work roll}, author={Oktay Elkoca}, journal={Surface & Coatings …
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The paper gives the results of a series of tests aimed at evaluating the effect of the electrical discharge texturing (EDT) process on the surface integrity of mill work rolls using two different … Expand. 1. Save. Difficulties In Characterising Roll Surfaces.
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The paper discusses the techniques now available for roll texturing, the developments that have occurred over the last decade and the main advantages provided by EDT over traditional SB methods. The results of an extensive series of tests aimed at evaluating operating variables when texturing steel work rolls using EDT are presented.
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Mill roll texturing is one of the oldest and well-established applications of EDT process. Mill rolls were imparted random and isotropic surface textures using EDT. …
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Aspinwall et al. (1992) in their work proposed use of EDT for texturing of mill rolls and characterized textured surfaces in terms of Ra and peak count (Pc). This was because surface roughness and peak distribution are of particular importance in case of random textures. The characterization of surface textures generated using EDT in terms …
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Now common methods of roller surface texturing include, a shot blast texturing (SBT), an electrical discharge texturing (EDT), a laser texturing (LT), and an electron beam texturing (EBT). ... Elkoca (2008) studied the properties of the recast white layer on the surface of the skin pass mill work roll by EDT. It was found that the …
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Benefits of EDT Full and complete texturing of the roll. Unrivalled control of the process variables – current, voltage, spark duration and electrode to roll gap ... Aluminium and low volume steel mills: Ra Range (on roll) 0.5 - 15microns: 0.5 -15microns: 0.5 -15microns: 0.5 -15microns: Roll Diameter Range: 200 -850mm: 200 - 800mm: 200 ...
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Hard chromium plating of cold mill work rolls is common practice in order to maintain topography and increase roll service life. The paper details the effect of hard chromium plating on electrical discharge textured (EDT) roll surface topography and surface integrity. Comparative data with corresponding non-chromium plated EDT roll …
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Using EDT instead of other traditional texturing methods gives us greater precision and control over the final product. Rockport Roll Shop's EDT process produces improved consistency from roll to roll, higher peak count, lower waviness, and better strip control. It also reduces the influence of roll hardness on the final roughness of the roll.
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2 S. JITHIN ET AL. In 1990s, electrical discharge texturing (EDT) was introduced for the purpose of tex-turing mill rolls [1]. ED textured mill rolls were found to exhibit twice the running life in
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Keep your roll in-mill two to three times longer with chrome plating. Chrome Deposit Corporation specializes in chrome plating with 40-plus years of experience. ... Chrome Deposit Corporation's EDT Texturing machines are capable of texturing a roll face up to 84″, diameter up to 32″ and roll weight up to 12.5 tons. Only Chrome Deposit ...
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The work rolls were textured in 30 mm wide bands using the generator parameters shown in Table 1, in order to determine the effect of sparking conditions on both surface roughness and surface integrity.Roll rotation direction (anticlockwise viewed from the tailstock end of the workpiece), roll surfaces speed (6. m/min) and electrode axial …
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The modification of the surface topography of rolling mill rolls commonly results in a random surface texture pattern using, for example, sandblasting or electro discharge texturing (EDT) [3,4]. ...
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Abstract Electrical discharge texturing (EDT) is used to generate rough surface textures. Though roughness of the work surface ... Save. Difficulties in characterising roll surfaces. I. Alcan. Materials Science, Engineering. 2003; Mill rolls finished by electrical discharge texturing (EDT) are widely used in the manufacture of …
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Non-directional and diffuse reflecting photometric proper ties may be imbued to a metal sheet Stock, particularly aluminum alloy sheet Stock, by directly creating a textured Surface on one or more Surfaces of the sheet Stock through mechanical texturing with at least one textured work roll in a cold roll reducing mill. A textured metal sheet Surface thus …
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This surface texture is imprinted from the rolling mill roll onto the rolled sheet by skin rolling [2]. The modification of the surface topography of rolling mill rolls commonly results in a random surface texture pattern using, for example, sandblasting or electro discharge texturing (EDT) [3,4].
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Electrical discharge texturing induces a recast white layer on the skin pass mill work roll surface, which forms the surface topography required for outer autobody …
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Traditionally, specific roll textures were produced using cross-grinding and shot blasting (SB), however, these have largely been supplanted over the last 20 years by electrical discharge texturing (EDT), laser beam texturing (LBT) and more recently, electron beam texturing (EBT) techniques [3], [4], [5]. Such processes allow rolls to be ...
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The term EDT (Electro Discharge Texturing) means generating texture by discharging electric charges on the roller's surface. It is a special procedure of preparing the working rollers with which the …
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Electrical discharge texturing (EDT) enables large area texturing in components such as mill rolls and bio-implants, where random overlay textures are suitable.
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Currently, shot blasting (SB), laser beam texturing (LBT) and electrical discharge texturing (EDT) are the three principal methods used to texture mill rolls, …
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Mill roll texturing using EDT ResearchGate. Mill roll texturing using ... (SB), laser beam texturing (LBT) and electrical discharge ... methods used to texture mill rolls, however, electron beam texturing ... INTEGRATED ROLL SERVICES cold rolling mills roll grinding ...
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EDT technique is a kind of texture method to melt the material on the barrel by spark-discharge between the electrode and the barrel in the insulation liquid. The texture pattern has a random distribution.
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Surface texture of a temper mill work roll plays an important role in steel sheet production. Electrical discharge texturing (EDT) is a common texturing method to meet the strict
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EDT experiments C Si Mn Cr Mo Ni Fe 0.86 0.56 0.50 3.42 0.31 0.18 Balance Experimental studies were conducted on the basis of a work roll, which had been used for skin passing of the galvanized O. Elkoca / Surface & Coatings Technology 202 (2008) 2765–2774 Table 3 EDM test parameters Sample Discharge time (μs) Off-time (μs) Average current ...
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Introducing the characteristics and application of shot-blast texturing (SBT), electrical discharge texturing (EDT), TOPOCROM texturing technologies, on hot-galvanizing skin pass mill, carrying ...
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The conclusions are as follows: The electro-discharge texturing (EDT) roll has a homogeneous roughness distribution and shape, and also a sinuous peak surface, and the life time is 2 times longer ...
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Superfinishing Unit the EDT-machine allows particularly the reduction of roll changes in the mill as well as constant roughness of the sheet during the rolling process. Key words: Texturing; Superfinishing; Surface; EDT. 1 Technical contribution to the 49th Rolling Seminar – Processes, Rolled and Coated Products, October,
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The EDT rig comprised a DC servo quill assembly fitted with a single graphite electrode connected to a dual voltage pulse generator. In addition results are presented from a "tandem mill" simulation which gives texture transfer parameters from the EDT roll to the sheet steel (CSI) for a 3% reduction.
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Textured functional surfaces are finding applications in the fields of bioengineering, surface energy, hydrodynamics, lubrication, and optics. Electrical discharge machining (EDM), which is normally used to generate smoother surface finish on various automotive components and toolings, can also generate surfaces of rough finish, a …
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• Roll grinding • Roll texturing (work rolls only) • Chrome plating (work rolls only) • Inspection • Chocking (reassembly of roll and chocks) • Return to mill Work Roll in Cold Mill Roll Shop Source: worldsteel: Interior view of high strength automotive steel facility (ID 32112), as per 16.10.2022
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