20鋼液體滲碳工藝及性能研究分析畢業(yè)論文(已修改)
2025-07-01 07:23 本頁面
【正文】 摘 要液體滲碳就是鋼件在液體滲碳介質(zhì)中加熱保溫，使碳原子滲入鋼件表面，使其表面的碳濃度發(fā)生改變，從而獲得具有一定表面含碳量和一定濃度梯度的熱處理工藝。當(dāng)前液體滲碳正著無毒無污染的方向進(jìn)行，像NaCl無毒液體滲碳劑、603無毒液體滲碳劑及其改進(jìn)行、QPQ技術(shù)等。本文主要研究了20鋼在經(jīng)過液體滲碳后的組織與性能，并研究了液體滲碳的滲劑、工藝參數(shù)，并且與未經(jīng)過此滲碳的工藝進(jìn)行了分析對比。液體滲碳劑由基鹽、催滲劑、滲碳劑組成，工藝簡單，便于實施，是一種可獲得滲層性能好的化學(xué)熱處理方法。通過滲碳、淬火、回火處理，發(fā)現(xiàn)隨著加熱溫度的升高，工件表面硬度和滲層厚度不斷增加，隨著加熱時間的增加，工件表面硬度和滲層厚度也不斷增加。 關(guān)鍵詞：20鋼 液體滲碳 耐磨 硬度 滲碳劑 AbstractLiquid carburizing is carburizing steel parts in a liquid medium，heat insulation，of carbon atoms into the surface of steel,to change the carbon concentration of the surface,to obtain a certain surface concentration gradient of carbon content and heat treatment process must .Liquid carburizing is the current direction of the toxic pollution,NaCl as nontoxic liquid carburizing agents,603nontoxic liquid carburizing agents and their changes were,QPQ technology.This paper studies the liquid after the 20 steel and properties after carburizing，and to study the penetration of liquid carburizing，process parameters and the application process in 20 steel,And with a total penetration of this technology has not been analyzed and pared. Liquid carburizing agent from the base salt,posed of carburizing agent,process is simple,easy to implement，Nitrided layer is a good performance of available chemical treatment methods. By carburizing, quenching and tempering treatment, found that increasing the heating temperature increases, surface hardness and thickness of the increasing infiltration, with the increase of heating time, infiltration surface hardness and thickness are also increasing.朗讀顯示對應(yīng)的拉丁字符的拼音字典Key words: 20 steel liquid carburizing wear hardness carburizing agent目 錄摘要 ⅠAbstract Ⅱ第1章 緒論 1 項目的發(fā)展背景 1 項目發(fā)展趨勢和研究意義 1第2章 材料分析 2 材料分析 2 20鋼的成分特點 2 20鋼的用途 2第3章 20鋼液體滲碳的實驗儀器和內(nèi)容 4 實驗原理 4 實驗儀器 4 加熱設(shè)備和檢測設(shè)備 4 顯微硬度測試原理 6 觀察金相的步驟 6 滲碳層深度的測量 7 實驗藥品18
法律信息相關(guān)推薦
鄂ICP備17016276號-1