PQF連軋管機(jī)的厚壁超短管軋制工藝技術(shù)開(kāi)發(fā)

Development of Technology of PQF Process for Rolling Heavy-wall,Extra-short Tube

摘要: 通過(guò)優(yōu)化PQF連軋管工藝，解決了厚壁超短管軋制時(shí)存在的問(wèn)題，重點(diǎn)介紹了制約生產(chǎn)的關(guān)鍵要素——芯棒限動(dòng)速度和脫管機(jī)軋制速度優(yōu)化匹配的問(wèn)題，提出了電氣控制增加限動(dòng)齒條返回延時(shí)的措施，實(shí)現(xiàn)了脫管機(jī)軋制過(guò)程扭矩平穩(wěn)，滿足連軋區(qū)域的自動(dòng)化生產(chǎn)。通過(guò)現(xiàn)場(chǎng)生產(chǎn)，鋼管幾何尺寸精度滿足標(biāo)準(zhǔn)要求，產(chǎn)品成材率達(dá)到機(jī)組設(shè)計(jì)水平。

Abstract: The problems staying with the PQF process in case of rolling the heavy-wall，extra-short tube are solved by means of optimizing the process itself.Described as the focus is the key element restraining the production，i.e.，optimally matching the retained mandrel speed with the extractor rolling speed.A measure as taken is to increase the retained rack return time delay via the electric control system so as to ensure consistent torque of the extractor during the rolling process，which is in line with automatic operation of the entire rolling area.The actual site operation result shows that the steel tube geometric dimension accuracies are up to applicable specification，and the metal yield is also up to the designed target of the mill line.