分塊壓延鋼片に於ける機械的表面疵の成因とその防止法に就て

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Investigation was made on the characteristics and cause of mechanical surface defects which occurred in low carbon steel bloom and on their prevention. The results of this investigation were summarized as follows : 1. The mechanical surface defects were classified into 14 kinds under the following 6 categories : (A). those caused by rugging……4 kinds (B). those caused by roughness of roll surface……2 kinds (C). those caused by abnormal compression……2 kinds (D). those caused by inclusions compressed into blooms……2 kinds (E). those caused by accessory equipments of rolls……2 kinds (F). those which occur at the time of materials being under working……2 kinds 2. Defects which came under the categories of A and B had mainly their causes in rough rolling. 3. The mechanism of causing each kind of defects and its prevention were stated. 4. It was recommended that rugging should be practised so as to be parallel to the roll shaft and be linear. 5. Comparatively high temperature of materials rolled was favorable for preventing the occurence of defects. 6. If reasonable rugging is applied to rolls, rolling of materials at the first stage in using the rolls was favorable for preventing the occurence of defects. 7. Slower rolling was better than speedy rolling for preventing the occurence of defects. 8. A consideration was experimentally given on the irregularity of surface defects of rolled products.
社団法人日本鉄鋼協会の論文
1952-09-25

分塊壓延鋼片に於ける機械的表面疵の成因とその防止法に就て

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