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Analysis on Hot Rolling and Cold Rolling Texture of Fe-3% Si Steel Strip

Author: YangHua
Tutor: LiChangSheng
School: Northeastern University
Course: Materials Processing Engineering
Keywords: Thin slab continuous casting and rolling grain oriented silicon steel texture
CLC: TG335.1
Type: Master's thesis
Year: 2008
Downloads: 176
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Abstract


This paper reviews the situation of internal and external research results and development about the exploitation of grain oriented silicon steel with the process based on the status of the technology of continuous casting and rolling. The texture of hot rolling, normalizing and cold rolling on Fe-3%Si grain oriented silicon steel are tested and analysised throughout simulating thin slab continuous rolling process to produce oriented silicon steel in the lab.The following general conclusions based on the results of this work can be drawn.(1) The EBSD results of hot rolled sample 2# and 3# showed that texture gradient exists from surface to center.{110}<001> orientation exists in transition Layer and{001}<110>, {112}<110> orientation exists in center. When the reduction is 97.1%,{110}<001>、{110}<112> and sharp{001}<110> orientation exist in the sample.(2) Analysis on texture density of hot rolled sample 4# and 5# showed that the intermediate reduction had less effect onγand e (GOSS orientation is similar) fiber thanαfiber.(3) There were similar texture gradient for hot rolled sample 3# and 6# with different chemical compositions. The samples had similar texture distribution to HiB steel.f Hi-B steel. The density of{111}<112> orientation was higher than{111}<011> on y fiber.(4) The cold rolled texture was composed by a (<110>//RD) andγ(<111>//ND) fiber.When the total reduction was 59.2% and 70.5%, texture on y fiber inceased gradually.. When the total redution was 79.7% and 84.3%, texture on y fiber decreased gradually because of the excessive processes.(5) The samples 13# and 3# showed that the cold rolled texture inherit the distribution of hot rolled texture, but the texture ofα,εandγchanged:αfiber changed from {001}<110> orientation to{223}<110> and{111}<110> orientation. Theεfiber transformed to{111}<112> orientation. On Y fiber, all the texture density increased andαfiber effected greatly on texture density of{111}<011> orientation.(6) The cold rolled sample 13# and 3# showed that after cold rolling, {001}<110> orientation transforms to{111}<110> orientation.on a fiber.. Onεfiber, the density of{111}<112> orientation of H/4 layer in sample 14# was the highest in the layers, Onγfiber, the density of{111}<110> orientation of H/2 layer in sample 14# was the highest in the layers.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling process > Rolling method
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