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| 題 名 | 鉬添加以及後熱處理對鐵基合金硬面銲補耐磨耗性能之研究 |
|---|---|
| 作 者 | 蘇演良; 周漢標; | 書刊名 | 材料科學 |
| 卷 期 | 27:4 1995.12[民84.12] |
| 頁 次 | 頁268-279 |
| 分類號 | 472.14 |
| 關鍵詞 | 硬面銲補; 後熱處理; 磨損量; 次表層; Hardfacing; PWHT; Weight loss; Subsurface; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 鐵基硬面銲補被廣泛的使用於碎石機、推土機之履帶及泥鏟等各種耐磨 耗機件的修復。為了提高銲補金屬之耐磨耗性通常添加各種合金元素,而為避免 銲接後的變形及龜裂通常施以後熱處理。本文即在探討銲補金屬中的鉬合金含量 及銲接後熱處理(PWHT)對硬面銲補磨耗性質、微觀組織等的影響。 銲態硬面銲補試件的硬度值隨鉬含量的增加而增加,但在3.06時達臨界飽和。經 PWHT銲補試件的硬度,隨鉬含量之增加先增後減,最高硬度值在鉬含量為2.02 時。銲態試件及PWHT試件對粘著磨耗的耐磨耗性能,與配對材料有關。配對材 料為SS400時,磨損量隨鉬含量的增加而減少。但鉬含量在2.02後,磨損量即保持 穩定,不再明顯減少。配對材料硬度較高時(SKD11),磨損量隨著鉬含量的增加, 先減少後增加。鉬含量在2.02時,磨損量最低。經PWHT銲補件之粘著磨耗性能 較銲態試件差。 銲態試件三體落砂磨料磨耗的耐磨性能,隨著鉬含量的增加而增加。但鉬含量在 3.06時達到穩定飽和。而PWHT銲補試件的耐磨料磨耗性能則於2.02片MO時最 佳。經PWHT的銲補試件,耐磨耗性較銲態試件差。硬面銲補金屬中添加鉬含量, 對二體銷盤磨料磨耗的性能並無幫助。此主要為析出的碳化物硬度較磨料(SiC) 硬度低。銲態試件的磨損量較PWHT試件高。 應力消除熱處理之試件,經粘著磨耗後,磨損面次表層有明顯的微裂紋及塑性流 的形成,但銲態試件磨損面的次表層,塑性變形及裂紋的形成明顯的減少。 |
| 英文摘要 | The Ferro-base hard facing deposited have been applied in repairing various wear parts ,i.e. shove teeth; paving screw; crusher parts; mill hammer, and so on. To increase the wear resistance of the deposited metals, many kinds of alloy elements are applied. A post weld heat treatment (PWHT) for deposited metal is performed to avoid deformation and crack after welding. For the purpose the effects of molybdenum content and PWHT on the microstructure and wear properties of hard facing deposited have been discussed in this paper. The hardness of as-weld (A.W) deposited metal increases with Mo until 3.06. The hardness of PWFIT specimen increases with Mo first and then decreases. The highest hardness of PWHT specimen is at 2.02 Mo. The adhesives wear resistance of A.W and PWHT specimen is relative with the paired materials. For the softer paired material(SS400), wear amount decreases with Mo until 2.02 Mo. For the harder paired material(SKD11), the wear amount decreases with Mo first and then increases, the lowest wear amount is at 2.02 Mo. The abrasives wear resistance of A.W specimen for 3-body rubber/sand abrasive wear increases with Mo increase until 3.06, and then reaches critical point. The optimum Mocontent of PWHT specimen for 3-body abrasive resistance is at 2.02. There is no effect of Molybdenum on 2-body pin-on-disk abrasive wear test up to 3.86 Mo. |
本系統中英文摘要資訊取自各篇刊載內容。