Mill roll texturing using EDT

A study on the characteristics of electrical discharge textured skin pass mill work roll

“…Successive discharges at high frequencies produce many randomly placed overlapping craters. The shape and the depth of the craters, which determine the surface roughness of the rolls, depend mainly on the operational parameters such as discharge current, discharge duration, and polarity used [4][5][6]. Compared with traditional shot blasting texturing, EDT allows higher number of peaks at constrained average surface roughness, which can be obtained in a higher repeatability.…”

Microstructure and wear behavior of laser-textured and micro-alloyed Co-based WC and TiC composite sintered-carbide coating

“…Shot blasting (Ikeda et al, 1996) was used years ago, the surface topography is uncontrollable and property is reinforced mainly through physical operation, which limit the application of shot blasting in the roll texturing. Meanwhile, some new developments such as miniaturiza- (Simão et al, 1994;Elkoca, 2008), as another main roll texturing method, roughens the roll surface with random distributed craters and convexes, while the chrome-plating technology has been used, local coating would be pulled off during the rolling process and repeatability and wear property of the roll surface topography are lower than that of the laser texturing (Pawelski et al, 1994;Andersson et al, 2007). Meanwhile, the laser texturing is the re-melting processing of the roll surface material essentially and limited strength of the craters is improved.…”

Effect of EDT surface texturing on tribological behavior of aluminum sheet

“…El-Menshawy and Snaith (1991) advanced the EDT technique and made it more popular than the traditional surface texturing methods such as cross-grinding and shot blasting. Simão et al (1994) studied the topographical characteristics of EDT metal sheets and examined the influence of process parameters upon surface texture quality. From Fig.…”