positive rolling 中文意思是什麼
positive rolling
解釋
正向滾轉-
Rolling massage, can massage any position of your body ; 2 ) positive and opposite massage adjustable, rolling speed adjustable with 3 levels : fast, medium and slow ; 3 ) 3 levels ( strong, medium and weak ) infrared ray heating function ; 4 ) high - class siver - grey case wrapped with two layers cloth covers ; 5 ) this machine has one nip slot with some massage grains in the middle, the both of side has some rolling grains
滾動按摩，可根據自身需要按摩人體不同位置； 2 ）滾輪可調整正反方向， 「慢、中、快」三檔調節； 3 ）強、中、弱三檔紅外線熱療； 4 ）高檔銀灰色外殼配2層布套； 5 ）此機中間一個帶顆粒夾槽，兩邊為滾輪小顆粒。 -
With prestressed rolling mill of the middle steelworks of taiyuan iron and steel limited group company as the researched object, this article analyze the existent questions and research the initial stress of prestressed rolling mill and computer control system, analyze the design thought of prestressed rolling mill and clarify the relationship between the dimensional precision of rolled material and the rigidity of base of rolling mill and the main method to increase the rigidity of base of rolling mill, analyze how to confirm the rigidity, sectional area of handle and post, and pretightening force, put forward the viewpoint that the key to assure great rigidity is to assure that the remnant initial stress is always positive during rolling, and develop intelligent control system with plc as the core on the basis of the former research to assure that the remnant initial stress is always positive during rolling
本文以太鋼集團公司中型型鋼廠預應力軋機為對象，分析了該廠預應力軋機所存在的問題，對預應力軋機的預應力以及微機控制進行了系統研究；分析了預應力軋機的設計思路，闡明了軋材尺寸精度與軋機機座剛度的關系及提高軋機機座剛度的主要途徑；分析了預應力軋機設計過程中預應力軋機的剛度、預緊拉桿和機架立柱斷面積及預緊力的確定；提出了預應力軋機保證高剛度的關鍵就是「確保軋制過程中，殘余預應力始終大於零」的觀點；在前述研究的基礎上開發了以可編程邏輯控制器為核心的智能監控系統，以確保「軋制過程中，殘余預應力始終大於零」這個要求。
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