MOLDING COMPONENT FOR BREAKING SEPARATION TYPE CONNECTING ROD AND CONNECTING ROD

PROBLEM TO BE SOLVED: To provide a molding component for breaking separation type connecting rod capable of suppressing generation of losses during breaking separation and achieving both of strength enhancement and fitting property enhancement.SOLUTION: The molding article for breaking separation ty...

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Hauptverfasser: SUZUKI KIO, ANAMI GORO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a molding component for breaking separation type connecting rod capable of suppressing generation of losses during breaking separation and achieving both of strength enhancement and fitting property enhancement.SOLUTION: The molding article for breaking separation type connecting rod contains a predetermined chemical component composition, a metallic structure of steel has ferrite and pearlite and further may have bainite, total area percentage of ferrite and pearlite to all structure is 90 area% or more and area percentage of bainite to the all structure is 10 area% and the following Formula (1) and Formula (2) are satisfied. 42≤[1.16×(C/10)×(0.7×Si+1)×(5.1×(Mn-1.2)+5)×(0.35×Cu+1)×(0.36×Ni+1)×(2.16×Cr+1)×(3×Mo+1)×(1.75×V+1)×25.4]≤95 (1) 0.80≤[C+1.69 V]≤1.0 (2).SELECTED DRAWING: Figure 4 【課題】破断分離時の欠損発生を抑制すると共に強度向上と嵌合性向上とを両立できる破断分離型コンロッド用成型部品を提供すること。【解決手段】本発明の破断分離型コンロッド用成型部品は、所定の化学成分組成を含有し、鋼の金属組織が、フェライト、及びパーライトを有し、更にベイナイトを有していてもよく、全組織に対するフェライト、及びパーライトの合計面積率は90面積%以上であって、且つ全組織に対するベイナイトの面積率は10面積%以下であると共に、下記式(1)、及び式(2)を満足する。42≦[1.16×(C/10)1/2×(0.7×Si+1)×(5.1×(Mn−1.2)+5)×(0.35×Cu+1)×(0.36×Ni+1)×(2.16×Cr+1)×(3×Mo+1)×(1.75×V+1)×25.4]≦95・・・(1)0.80≦[C+1.69V]≦1.0・・・(2)【選択図】図4