Hollow stabiliser and steel tube for hollow stabilisers and method of production of hollow stabilisers

摘要

Patent invention summary: "hollow stabiliser, and steel tube for hollow stabilisers and method of production of hollow stabilizers". The invention refers to a n och stabiliser which has a component composition containing 0,26% to 0,30%of C,0,05% to 0,35% of you, 0,5% to 1,0% of Mn, 0,05% to 1,0%to CR 0,0005% to 0,05% of you, 005% to 0005% to 005% to 000b, 005% to 005% to 000% to 0005% and% to% to 000% to% to% of you, P%000%000%005%c%al%al% of you, in theory, P, in theory, in theory, in theory, A 0,08% or less, 0,05% or less, less than 00030%,0006% or less, and 0004% or less respectively, the remainder of the component composition is composed of unavoidable faith and impurities, a value of a product of the Mn content and the content of S is 00025 or less, and the significant cooling speed (vc90) represented by a given formula is 40 (c) or less; and where the metal structure is composed of a seasoned martensite, the length of stretched lines occurring in a central part of the hollow stabiliser is 150 or less, an HRC value is 40 to 50,The reason for the thickness /(outer diameter) is 0,14 or more and the depth of a decarbonised layer on the internal surface is 20 -metre or less from the internal surface; the said hollow stabilizer has greater strength compared to conventional stabilizers and also you Are excellent fatigue properties and a steel tube for hollow stabilizers which is used as a material for the hollow stabilizer.