This thesis introduces the working principle, craftwork requirement, modeling process, control strategies and the realization of lf refining furnance bottom blowing argon control system. through the study and analysis of bottom blowing argon process control system, the thesis discusses the mean neural network model of controlled object and the mathematical models of the exectors, pwm adjustable pressure controller and pcm adjustable flux controller according to the relevant liquid knowledge and relevant data, including design data, test data and running data. to begin with the craftwork reguirement of bottom blowing argon and the actual instance of the control system, it presents the strategies of fuzzy parameters self - adaptive pid control used in pressure difference inner loop and fuzzy plus pi compound control used in flux outer loop which are based on the above modeling in order to carry out the accurate control of argon flux
本文介紹了lf精煉爐底
吹氬過程式控制制系統的工作原理、工藝要求、建模過程、控制策略以及控制系統的實現。通過對精煉爐底
吹氬過程式控制制系統進行研究與分析，並根據流體力學的有關知識以及有關數據（其中包括設計數據、試驗數據和運行數據） ，建立起了被控對象的平均神經網路模型和執行機構（即pwm調壓器和pcm調流器）的數學模型。在此模型的基礎上，從底
吹氬工藝要求和控制系統的實際情況出發，提出了壓差內環模糊參數自適應pid控制策略和流量外環模糊pi復合控制策略，以實現
氬氣流量的精確控制。
The molten steel have the same making environment at the spot, but it is subject to many factors such as temperature and killing oxygen instrument penetration ' s depth into the molten steel during the time, and killing oxygen by adding aluminum process is just one part of the whole system. consequently, in order not to interfere with next later continuing casting and other process, and to ensure the production rhythm, when the molten steel arrives at the aluminum feeding station, it cannot meet the production requirement only to sample, assay and determine the ingredient content
在實際生產中，模型是通過鋼包中的含氧量和鋼包中所需含鋁量來確定加鋁量這一函數關系的，雖然鋼水具有相同的冶煉環境，但當每一鋼包從出爐到達加鋁站進行定氧加鋁期間，會受到溫度、定氧儀探頭伸入鋼水的深度和
吹氬等不同因素的影響，而且對整個煉鋼工藝來說，定氧加鋁系統只是整個生產工藝中的一部分。
Argon - blown pocket block is a supportive new and hi - tech product developed simultaneously with bottom - blow argon vent brick
二、
吹氬座磚是與底
吹氬透氣磚同步開發的配套高新技術產品。
Argon - blown pocket block and pocket block should be selected rationally in light of the metallurgical technology and service life of steel ladle
吹氬座磚和水口座磚應根據冶煉工藝情況及鋼包使用壽命的不同進行合理選擇。
Mathematical model of molten steel circulation in ladle with ar blast
鋼包
吹氬時鋼液循環流動過程數學模型研究
Mathematical simulation on blowing argon at bottom of ladle on external refining
爐外精煉中鋼包底
吹氬流場的數學模擬
Numerical simulation of fluid behavior in continuous slab - casting mold with argon injection
連鑄板坯結晶器內鋼液
吹氬行為的數值模擬
Water model study on characteristics of fluid flow in continuous casting tundish with argon bubbling
吹氬連鑄中間包內鋼液流動特性的水模型實驗研究
All full - penetration joints shall be back purged with argon or helium
所有全熔透焊接接頭用氬或氦進行反吹。
