(1. 華中科技大學(xué) 材料成形與模具技術(shù)國家重點(diǎn)實(shí)驗(yàn)室，武漢 430074；
2. 華中科技大學(xué) 電氣與電子工程學(xué)院，武漢 430074)
摘 要: 采用有限體積法計算電弧作用下AgMeO觸頭材料溫度場，深入分析第二相MeO顆粒的密度、比熱容、熱導(dǎo)率、分解溫度和分解焓等物性參數(shù)對熔池接觸面積的影響，詳細(xì)說明MeO含量(體積分?jǐn)?shù))對熔池接觸面積和熔焊力的影響，著重討論電弧輸入觸頭的能量、燃弧時間和燃弧半徑對熔池接觸面積的影響。結(jié)果表明：與第二相MeO的密度、熱導(dǎo)率及體積分?jǐn)?shù)等物性參數(shù)對熔池接觸面積的影響相比，電弧輸入能量的影響才是最主要的。
關(guān)鍵字: 銀−氧化物觸頭；溫度場；電弧參數(shù)；氧化物性質(zhì)；熔池接觸面積
（1. State Key Laboratory of Materials Forming and Die and Mould Technology,
Huazhong University of Science and Technology, Wuhan 430074, China
2. College of Electrical and Electronic Engineering,
Huazhong University of Science and Technology, Wuhan 430074, China）
Abstract:Based on the calculation results of the temperature field in AgMeO contact materials after arc by finite volume method(FVM), the effects of density, heat capacity, thermal conductivity, decomposition temperature and decomposition enthalpy of MeO phase on the contact area of the molten pool (CAMP) were analyzed. The effect of the density of MeO (volume fraction, %) on the contact area of the molten pool and fusion force was discussed in details. Finally, the input energy of the arc, the arc duration and the arc radius were considered to affect the contact area of molten pool as well. Comparing with the effects of MeO phase density, thermal conductivity and volume fraction etc on the contact area of the molten pool, the input energy of the arc in contact materials is the most important factor. Therefore, reducing the input energy in materials as much as possible is crucial to the research of AgMeO contact materials.
Key words: AgMeO contact material; temperature field; arc properties; properties of MeO; contact area of molten pool
