ULTRA-HIGH STRENGTH STEEL SHEET HAVING EXCELLENT SHEAR WORKABILITY AND METHOD FOR MANUFACTURING SAME

• Main Authors: KIM, Sung-Il, BANG, Chan-Woo
• Format: Patent
• Language: English; French; Korean
• Published: 12.11.2020
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The present invention relates to a steel sheet which is suitable to be used as the material of a part such as a friction plate for a vehicle automatic transmission. More specifically, the present invention relates an ultra-high strength steel sheet having excellent shear workability and a method for manufacturing same. La présente invention concerne une feuille d'acier apte à être utilisée comme le matériau d'une pièce, telle qu'une plaque de friction d'une transmission automatique de véhicule. La présente invention concerne, en particulier, une feuille d'acier très haute résistance offrant une excellente ouvrabilité de cisaillement et son procédé de fabrication. 본 발명은 자동차 자동변속기의 마찰판 용도 등의 소재로 적합한 강판에 관한 것으로서, 보다 상세하게는 전단가공성이 우수한 초고강도 강판 및 그 제조방법에 관한 것이다.