本文選題：空心抽油桿　切入點：鐓鍛成形　出處：《西安石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：空心抽油桿作為一種新型的抽油桿,由于其獨特的結(jié)構(gòu)形式和功能,已經(jīng)成為邊際、難動用等油田開發(fā)過程中的一種重要裝備。本文采用CAE模擬技術(shù),對比分析手段和材料性能測試等方法,系統(tǒng)的研究了鐓鍛式空心抽油桿的成形及其熱處理工藝。著重分析了CAE模擬鐓鍛式空心抽油桿的成形過程中溫度、鍛造力和成形尺寸之間的關(guān)系,并且重點分析了鐓鍛式空心抽油桿熱處理過程中,工藝參數(shù)、組織、性能之間的關(guān)系。研究結(jié)果表明:以20CrMo為原材料,采用整體鐓鍛式的結(jié)構(gòu)形式和加工方法,可以制造出具有較高性價比的空心抽油桿。采用一次聚料、二次成形等鍛造過程設(shè)計,鐓鍛式空心抽油桿桿頭在模具初始溫度為300℃、原材料鍛造溫度在950~1150℃之間、成形力不小于2.01×105N時,第一次聚料可以達(dá)到原材料1.5倍壁厚的要求,并且聚料效果良好;鍛造溫度在930~1050℃之間,成形力不小于1.6×105N,終鍛成形可以達(dá)到桿頭的設(shè)計要求。采用一次聚料、二次成形等鍛造過程設(shè)計,鐓鍛式空心抽油桿接箍在模具初始溫度為300℃、原材料鍛造溫度在914~1110℃之間、成形力不小于2.01×105N時,第一次聚料可以達(dá)到原材料1.5倍壁厚的要求,并且聚料效果良好;鍛造溫度在995~1130℃之間,成形力不小于2.54×105N,終鍛成形可以達(dá)到接箍的設(shè)計要求�，F(xiàn)場試驗表明,采用加熱溫度為880℃,保溫時間為68min,20℃水冷的淬火處理,配合550℃加熱,保溫120min,空冷的回火處理,可以得到細(xì)小、均勻分布的回火索氏體組織,各項力學(xué)性能指標(biāo)達(dá)到SY/5550-2012《空心抽油桿》的要求,能夠滿足油田用空心抽油桿的要求。
[Abstract]:As a new type of sucker rod, hollow sucker rod has become an important equipment in the process of oilfield development, such as marginal and difficult to use, because of its unique structure and function. This paper adopts CAE simulation technology. The forming and heat treatment process of upsetting hollow sucker rod are systematically studied by comparing the means of analysis and testing of material properties. The temperature of forming process of CAE simulation upsetting type hollow sucker rod is analyzed emphatically. The relationship between forging force and forming size is analyzed, and the relationship between process parameters, microstructure and properties of upsetting hollow sucker rod during heat treatment is analyzed. The results show that 20CrMo is used as raw material. The hollow sucker rod with high performance and price ratio can be manufactured by using the structural form and processing method of whole upsetting type. The upsetting type hollow sucker rod head can be designed in the initial temperature of 300 鈩，

本文編號：1568633