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荷重変動下における炭素鋼の摩擦・摩耗特性に及ぼすすべり摩耗履歴の効果

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Title

荷重変動下における炭素鋼の摩擦.摩耗特性に及ぼすすべり摩

耗履歴の効果

Author(s)

後藤穂積

Citation

福岡工業大学研究論集 第38巻第2号  P161-P166

Issue Date

2006-2

URI

http://hdl.handle.net/11478/828

Right

Type

Departmental Bulletin Paper

Textversion publisher

福岡工業大学 機関リポジトリ 

FITREPO

(2)

福岡工業大管研究論集 Res. Bull. Fukuoka lnst. Tech .. Vol. 38 No. 2 (2006) 161-166 -161―

-荷重変動下における炭素鋼の摩擦.摩耗特性に及ぼす

すべり摩耗履歴の効果

天後

本藤

祥穂

(物質生産システム工学専攻)

(知能機械工学科)

Effects of sliding wear history on subsequent friction and wear characteristics of carbon steel under varying load Yoshifumi AMAMOTO (Material Science and Production Engineering) Hozumi GOTO (Intelligent Mechanical Engineering)

Abstract

Machines and components in operation are usuallyヽubjected to varying loads. Despite this, wear testing has usually been conducted under constant loads. In this study, in order to investigate the ef­ feels of changes in loading on the transition from mild to severe wear, pin-on-disk type wear tests of carbon steel in contact with itself were conducted in moist air under dry sliding. Dming wear testing, the contact load was changed in aヽtep-wise manner just one time. from low to high levels. A longer sliding distance under mild wear conditions at low load in the first stage produces a more flattened and oxidized sliding surface with good wear resistance. In other words, a "quasi-mild wear'' regime with low rate occurred, sinular to the 1ruld wear. even at high loads in the second stage. The critical sliding distance Ls_ .. ,. い,, in the first stage necessary for the transition to quasi-mild wear in the second stage is given by an empirical formula. The proposed formula indicates that L

·'"'"'decreases with an increase in the first-stage load and a decrease in the second-stage load. In conclusion the quasi-nuld wear can be attained under sh01tcr sliding distance at higher loads in the first stage.

Keywords: Carbon steel, mild wear, severe wecu; transition, load change.

1. 緒 新たな機械を開発するためには, 設計段階で摩擦· 磨耗の対策に取り組まなければならない。これは機械 要素の接触面間に生じる摩擦を制御し, 摩耗を抑える 必要があるためである。稼働状態にある機械では構成 平成171031日受付 要索に作用する仙重, すべり連度等のしゅう動条件が 不規則に変動するのが普通である。しかしながら, 摩 控・歴耗に関する従来のほとんどの研究においてしゅ う動条件を一定に保って試験か行われている。とくに, 荷重を試験途中で変化させる試みは見られない。摩耗 1こよる寿命を予測して実用機械の構成部品を設吋する 場合, これらのしゅう動条件が変化する状況における 摩掠・摩几挙動について研究することが重要である。 本研究の日的は, 核触.面間に作用する荷軍を試験途

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