extrusion velocity 中文意思是什麼
extrusion velocity
解釋
擠出速度-
In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production
論文具體分析研究了不同成形工藝過程中金屬流動的特點，並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度（底部高度）與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析，獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線，同時對油泵定子成形過程的影響因素等進行了分析，優化並獲得了合理的溫擠成形工藝及模具參數。最後，利用模擬優化獲得的各項工藝參數進行生產實驗，得到實際生產出的合格油泵定子件，並將模擬結果與生產實驗結果進行比較。 -
The main parameters ( extrusion ratio, temperature, article size, deformation velocity, configuration of die, lubrication etc. ) effecting powder extrusion formability and forming process of powder cladding wire have been analyzed
對影響粉末擠壓成形性能的主要參數（擠壓比、溫度、顆粒度、變形速率、模具入口形狀以及潤滑等）以及粉末包覆線成形的工藝作了定性的分析。 -
Abstract : the numerical simulation of the rheological warm extrusion molding of the missile shell, a kind of aluminum alloy part, has been carried out, including the simulation of metal flow in the mold cave, velocity field, stress field, strain field, temperature field, and nodal force etc
文摘:對鋁合金零件彈托在溫擠條件下的流變成形過程進行了數值模擬，其中包括對金屬在模具型腔中的流動情況、速度場、應力場、應變場、溫度場、節點力等的數值模擬。 -
The relations, such as the tensile strength of extrusion products to extrusion ratio and contents of powder strengthen materials, the practical load of powder extrusion to contents of powder strengthen materials, extrusion ratio and extrusion velocity, were given by this dissertation
論文給出了實驗過程中擠壓製品的抗拉強度與擠壓比、顆粒增強材料含量之間的關系，粉末擠壓所需的實際擠壓力與顆粒增強材料含量、擠壓比、擠壓速度之間的關系等。 -
During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中，模擬結果表明，保壓時間是影響製件成形質量的關鍵因素之一，擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大，需進行參數之間的協調，只有當變形區內部始終維持準固態時，才能實現穩定的液-固擠壓成形過程；在變形場的模擬中，根據液態浸滲擠壓的成形特徵，選用了雙曲正弦剛-粘塑性有限元計算模型，研究了變形過程中應力應變場的變化規律，研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。 -
Liquid - solid extrusion of composite material is a new kind of metal forming process, which has been developed in recent years with a promising practical application prospect for its simple working procedure, low cost and good workpiece performance. through a lot of experiments, the optimization and chosing method of key process parameters ( pouring temperature, mold warm - up temperature, impregnating pressure, impregnating time ) has been mastered. under the precondition of appropriate chosing these parameters, the effective control of extrusion velocity is the key of mading good workpiece. but the control of extrusion velocity remains a handwork, and it is heavily affected by such uncertainties as a handler ' s knowledge and skill about the process. in order to solve the problem, the automatic control of the extrusion velocity is studied, and a computer control system is also designed under existing condition
通過大量實驗，已掌握了關鍵工藝參數（熔液澆注溫度、擠壓模預熱溫度、浸漬時間、浸漬力）的優化選取方法。在合理選取關鍵工藝參數的前提下，擠壓速度的控制是成形出質量良好製件的關鍵。但是，目前對于擠壓速度的控制仍停留在手動控制階段，利用該工藝制備管、棒材製件的成功與否受操作者對該工藝及其設備的經驗及熟練程度等不確定因素影響很大。 -
In this paper, the temperature fields during liquid infiltration extrusion of composites are simulated with the fem, the seepage fields of liquid metal are simulated with the fdm. both the temperature fields and the seepage fields are coupled, the temperature variation curves, infiltration front process curves and velocity variation curves with time are obtained
本文採用有限元法模擬了液態浸滲擠壓復合材料浸滲過程溫度場，採用有限差分法模擬了液態金屬滲流場，將兩者間接耦合分析計算，得到了浸滲區域的溫度變化曲線、浸滲前沿及浸滲速度隨時間變化等曲線。 -
So, in the paper, proceeding from the automatic control of extrusion velocity and based on the basic control strategy presented firstly, the relation among parameters of the process such as pressure, temperature and displacement is investigated, and the model of the process has been built using system identification method. then, a corresponding controller is designed together with its control algorithm, and the control system is proved viable and effective by the results of simulation on the control system. in the end, the problem of the realization of the control system is discussed by using modularization method. the hardware of the control system is designed and a sofeware with a perfect manmachine interface is developed, too
因此，本文從擠壓速度的控制出發，首先探討並確立了本系統的基本控制策略；然後根據此控制策略的必然要求，對該工藝擠壓過程所涉及到的擠壓力、溫度、擠壓軸位移等參數間的關系進行了深入研究，利用系統辨識方法建立了擠壓過程關鍵階段的數學模型；在此基礎上完成了相應的控制器設計，給出了控制演算法，並對所設計的控制系統進行了模擬。 -
( 4 ) the collision zones of eurasia are very complicated due to the extrusion of continent lithospheres and the subduction between the oceanand continent lithospheres, and we analyze the mutual effects of different lithospheres and the crustal deformation features of collision zones ( 5 ) firstly we give the present - day spreading velocity of the mid - atlantic ridge
（ 4 ）系統分析了歐亞碰撞帶大陸與大陸和大洋與大陸兩種截然不同的巖石圈擠壓與俯沖對歐亞板塊的影響及其邊界地殼形變特徵。 -
The extrusion is successfully divided into three ideal stages through the analysis on the pressing force and displacement curve in the process of extrusion. the mathematical model of three import and one export about extrusion velocity, temperature, extrusion force and displacement was constructed by the combination of first order classic least - square algorithm and least - square linear identifying, and the steady control to extrusion force was realized
採用一次經典最小二乘演算法和最小二乘在線遞推辨識相結合的方法，建立了以擠壓速度、溫度和位移為輸入，擠壓力為輸出的三輸入單輸出數學模型，同時對于在擠壓過程壓制階段中出現的不穩定現象，提出了合理的解決方案，能夠對擠壓過程壓制階段的壓制力進行較好的預測。 -
The control of extrusion velocity in the process is not only involved in the process equipment, but also related to the process itself
復合材料液-固擠壓工藝過程中擠壓速度的控制問題，不僅涉及到成形設備，而且與工藝本身的特點密切相關。 -
Thus, the problem of the control of extrusion velocity during the process has been basically solved, which establishes a base for the application of the process
上述工作的完成，初步解決了擠壓速度的自動控制問題，為復合材料液-固擠壓成形工藝的實際應用奠定了基礎。 -
Abstract : focused on the metal plastic forming of valve bodies for power plant boiler, a new process named “ shear extrusion ” is described in this paper. the numerical simulation analysis is carried out by using the 3 - d deform software to predict the distribution of velocity, stress, strain and temperature fields during the forming process and the flow law of metal. then the numerical simulation results are testified by simulative experiment. finally, large - size valve bodies have been successfully formed by the screw press
文摘:針對電站鍋爐用大型截止閥體的製造新工藝? 「剪切擠壓」 ，利用數值模擬的方法對剪擠工藝進行研究，得到了成形過程中速度、應力、應變及溫度場等的分佈及金屬流動規律，並通過物理模擬實驗進行了驗證，進而為獲得閥體剪擠製造的最佳成形工藝參數提供可靠依據。
分享友人