TITANIUM ALLOY SLIDE BEARING

• Main Author: INOUE WAKANA
• Format: Patent
• Language: English; Japanese
• Published: 08.10.2020
• Subjects: ALLOYS; BEARINGS; BLASTING; CHEMISTRY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FERROUS OR NON-FERROUS ALLOYS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

To improve durability by improving wear resistance, by highly hardening a slide surface in a titanium alloy slide bearing.SOLUTION: In a slide surface 2 made of a recrystallized texture of a titanium alloy of a spherical slide bearing A made of a titanium alloy, primary α crystal grains and secondary α crystal grains are contained, in a dispersion state as a suppression phase of crystal grain growth, the primary α crystal grains are contained in the range of area rate of 1% or larger and smaller than 10%. By a "pinning effect" of the primary α crystal grains, secondary α crystal grains are miniaturized to heighten the hardness of a slide surface 2.SELECTED DRAWING: Figure 1 【課題】チタン合金製滑り軸受における摺動面を高硬度化することにより、耐摩耗性を向上させて耐久性を向上させることである。【解決手段】チタン合金製の球面滑り軸受Ａのチタン合金の再結晶組織からなる摺動面２に、プライマリα結晶粒とセカンダリα結晶粒が含まれており、結晶粒成長の抑制相として分散状態でプライマリα結晶粒を面積率１％以上で１０％未満の範囲で含有させる。プライマリα結晶粒の「ピン止め効果」によってセカンダリα結晶粒を微小化して摺動面２の硬度を高める。【選択図】図１