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ลักษระโค้งเสยว ในส่วนของวงกลม 90 ดีกรี เช่น ลักษณะโค้งของท่อน้ำที่ทำมุมฉาก 90 องศา
(english) The very subtle ridge on the edge of strip steel left by cutting operations such as slitting, trimming, shearing, or blanking. For example, as a steel processor trims the sides of the sheet steel parallel or cuts a sheet of steel into strips, its edges will bend with the direction of the cut.
(english) A flat cold rolled usually .70/.80 medium high carbon steel strip, blue-black in color, which has been quenched in oil and drawn to desired hardness. While it looks and acts much like blue tempered spring steel and carries a Rockwell hardness of C44/47, it has not been polished and is lower in carbon content. Used for less exacting requirements than clock spring steel, such as snaps, lock springs, hold down springs, trap springs, etc. It will take a more severe bend before fracture than will clock spring, but it does not have the same degree of spring-back.
(english) A preliminary forging operation to give the piece approximately the correct shape for subsequent forming.
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(english) Bending deformation, i.e., deformation by increasing curvature.
(Concrete Engineering) A property of a solid that indicates its ability to withstand bending.
(english) A system of internal forces whose resultant is a moment. This term is most commonly used to refer to internal forces in beams.
(english) Upper limit of normal stress of a beam at which fracture or excessive plastic deformation occurs.