本文選題：冷軋管機 + 孔型設計　； 參考：《燕山大學》2015年碩士論文

【摘要】：冷軋管機是利用變斷面環(huán)孔型以往復運動的方式對荒管進行冷態(tài)軋制的工藝設備,現代金屬管材生產,尤其是合金鋼、有色合金及各種高變形抗力合金管材的生產廣泛采用周期式冷軋管機。根據國內用戶需求以及未來核電工業(yè)對不銹鋼管道的特殊要求,需要開發(fā)大型周期式兩輥冷軋管機。LG730是世界上最大的兩輥伺服型冷軋管機,該機具有較好的開坯性能,用于軋制大規(guī)格的黑色及有色金屬無縫管。在冷軋管工業(yè)生產中,孔型設計是冷軋管機設計的核心技術。通過孔型設計,給金屬變形提供最合理的變形機制。孔型設計的合理性對冷軋無縫鋼管成品尺寸精度、表面光潔度和變形均勻性有著重要影響。同時,孔型的好壞還影響著軸向力、軋機生產效率和生產成本。目前,俄羅斯擁有世界最大兩輥冷軋管機組,其最大成品管外徑為Φ450mm。為了解決核電所需要的更大口徑冷軋鋼管(極限尺寸Φ730mm),在孔型設計理論和生產實踐上都存在較高的難度。國內孔型設計一般采用經驗加理論的設計思想,傳統(tǒng)孔型設計理論不完全適用大口徑鋼管。特別是對于管徑極限尺寸達到或超過Φ730mm的大口徑鋼管,國際上尚未開發(fā)。所以,LG730冷軋管機孔型設計在理論和實際生產中都沒有先例。破解大口徑孔型設計方法,建立孔型設計的數學模型也是本課題需要解決的主要問題。本課題密切結合企業(yè)需求,利用舍瓦金孔型設計方法和Meer孔型設計方法對LG730進行孔型設計,并利用有限元軟件MARC建立彈塑性有限元模型,對世界最大的兩輥伺服型冷軋管機LG730典型品種進行建模和過程仿真,主要研究機組環(huán)狀孔型設計和產品工藝制度。根據企業(yè)生產需求,開發(fā)了孔型設計軟件,建立了孔型設計參數化模型,解決了往復軋制與回轉送進機構系統(tǒng)建模問題,為LG730冷軋管機的孔型設計過程提供了重要的模擬實驗數據依據,最終驗證利用Meer孔型設計方法在設計大口徑孔型的合理性。本課題研究對指導冷軋大口徑無縫鋼管工業(yè)生產將發(fā)揮一定作用,對推動我國冷軋無縫鋼管工業(yè)發(fā)展及其技術進步將產生較大影響,具有一定的理論意義和實用價值。
[Abstract]:The cold rolling mill is a kind of process equipment which uses variable section ring pass to roll the cold rolling of the waste pipe in the way of reciprocating. The production of modern metal pipe, especially alloy steel, is very important. The production of non-ferrous alloy and all kinds of high-deformation resistant alloy pipes is widely used in cold-rolling mill. According to the needs of domestic customers and the special requirements of nuclear power industry for stainless steel pipes in the future, it is necessary to develop a large periodic two-roll cold pipe rolling mill .LG730, which is the largest two-roll servo cold pipe rolling machine in the world, and has good billet opening performance. For rolling large-specification black and non-ferrous seamless pipes. Pass design is the key technology of cold-rolled pipe mill design. Through the pass design, the most reasonable deformation mechanism is provided for metal deformation. The rationality of pass design plays an important role in dimension accuracy, surface finish and deformation uniformity of cold rolled seamless steel tube. At the same time, the pass also affects the axial force, mill production efficiency and production costs. At present, Russia has the world's largest two-high cold-rolled tube mill, the largest finished tube diameter 桅 450 mm. In order to solve the problem of large diameter cold rolled steel tube (limit size 桅 730mm) required by nuclear power, it is difficult to design pass theory and production practice. In domestic pass design, the design idea of experience addition theory is generally adopted, but the traditional pass design theory is not completely applicable to large diameter steel pipe. Especially for large diameter steel pipe with diameter limit size reaching or exceeding 桅 730mm, it has not been developed in the world. Therefore, there is no precedent in theoretical and practical production for pass design of LG730 cold rolling pipe mill. It is also the main problem to solve the problem of solving the method of large aperture pass design and establishing the mathematical model of pass design. According to the needs of the enterprise, the author designs the LG730 pass by using the Sheva gold pass design method and the Meer pass design method, and establishes the elastic-plastic finite element model by using the finite element software Marc. The modeling and process simulation of the world's largest two-roll servo cold pipe mill LG730 is carried out. The annular pass design and product process are studied. According to the production demand of the enterprise, the pass design software is developed, the parametric model of pass design is established, and the modeling problem of reciprocating rolling and rotary feed mechanism system is solved. It provides important experimental data for the pass design process of LG730 cold-rolled pipe mill, and finally verifies the rationality of using Meer pass design method to design large-caliber pass. This research will play a certain role in guiding the industrial production of cold rolled large seamless steel tube, and will have a great influence on the development and technical progress of cold rolled seamless steel pipe industry in China, which has certain theoretical significance and practical value.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG335.12

【參考文獻】

相關期刊論文 前2條

1 劉松泉;;周期軋管機的孔型設計[J];鋼管技術;1988年01期

2 鄧小民;5A05、5A06合金薄壁管冷軋開裂原因分析[J];輕合金加工技術;2002年01期

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本文編號：2001457