滲層深度 的英文怎麼說
中文拼音 [shèncéngshēndù]
滲層深度
英文
depth of penetration-
Thickness measurement of borided layer and nistrided layer
滲硼層與滲氮層深度的測定The metal carburized layer depth is one of the major technical parameter to evaluate the quality of carburized components
滲碳層深度是衡量滲碳件質量的主要技術指標之一。However, many factors may affect eddy current testing and it is hard to classify them, and how to extract information which indicating carburized layer depth in signals is very important
但影響渦流檢測的因素很多,檢測結果不盡如人意,如何提取信號中的反映滲碳層深度的信息非常重要。Abstract : the effect of different carburizing programs on the microstructure and thick of carburized layer of screw bevel gears has been studied, meanwhile the fatigue life of these gears has also tested
文摘:本文研究了不同滲碳淬火工藝對螺傘齒輪組織及滲層深度等影響,並對螺傘齒輪進行了臺架疲勞測試。With the software of simulating low - pressure vacuum carburizing process and computer control system, carburizing process parameters are controlled accurately. the minimum error of carburizing layer depth, the optimal distribution of carbon concentration in carburizing layer and the minimum distortion are insured
均勻布置鼠籠狀加熱元件和多組滲碳氣氛噴嘴,並對滲碳參數進行精確控制,可保證零件最小的滲層深度誤差最佳的滲層碳濃度分佈。It is shown from results that increasing carburizing time further in the normal technology can not obviously deep the carburizing layer, but can cause nonmartensite microstructure at the bottom of the gear and coarse grain across the gear, these will heavily decrease the fatigue life of the gear
結果表明:在正常滲碳淬火工藝基礎上再延長滲碳淬火1小時,齒輪滲碳層深度變化不大,但其齒根局部表面處有非馬組織,且晶粒尺寸易產生異常長大現象,從而致使臺架疲勞壽命明顯下降。This paper is introduced bp neutral network character, algorithm, designing principal on its construction and the designed product. input features extracted by the way described above into a bp neutral network, and using it to classify seven type of different carburized layer depth specimen. the result is indicated, using wavelet packet method to extract features and bp neutral network to classifying, is effective and precise to classify different metal carburized layer depth. it is useful and economical
本文介紹了bp神經網路的特點、演算法和其結構的具體設計方法和設計結果,並將小波包提取的特徵值輸入到bp網路,對7種不同滲碳層深度的試件進行分類,實驗結果表明,小波特徵值提取和bp神經網路分類器相結合,可以實現對不同滲碳層深度的分類,效果良好,精度較高,有一定的實用價值。Results showed : ( 1 ) if the proportion of water in the soil is lower than wilting coefficient, and if irrigating water is very little, ( irrigating water is spreading horizontally and vertically ) the relationship between the horizontal width ( x ) and the ? rtical depth ( y ) is remarkable. the equation is y - 0. 02 12x2 + l. 8546x - 17. 88. the related coefficient is r = 0. 9350
結果表明: ( 1 )在土壤含水量低於萎蔫系數的乾燥條件下,進行微量穴滴灌,滴灌點土壤濕潤面直徑x與最大垂直面滲透深度y呈顯著相關,數學模型為: y = - 0 . 0212x ~ 2 + 1 . 8546x - 17 . 88 ,相關系數r = 0 . 9350 ( 2 )在微量補水灌溉情況下,只有灌水量大於4000ml /穴,才能使滴灌水滲透到20cm以下土層,達到作物根系集中層,否則水分很難被作物吸收,造成滴灌水的浪費。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象,考慮滲流與傳熱的相互作用,採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明,高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域,增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降,熱滲透深度擴大,熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域,孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用The depth and microhardness distribution of alumetizing layer obtained on different technical conditions were measured
測定了不同工藝條件下獲得的浸滲層深度和浸滲層顯微硬度的分佈。Abstract : a new simulating method is established for the calcul ation of the hardness profile of high - carbon - concentration deep - carburization, on the basis of analyzing this process and taking into account the influence o f carbide solution and dissolution, carbon - concentration and temperature on the diffusion behavior, and the influence of the environment factor on carbon trans fer through the gas - solid interface
文摘:在對高濃度深層滲碳的特點進行分析的基礎上,考慮到碳化物的析出與溶解、溫度及碳濃度對擴散行為的影響,氣氛環境對相界面碳傳遞過程的影響,淬火烈度對滲碳層冷卻效果的影響,提出了一種新的模擬高濃度深層滲碳滲層硬度分佈的方法。In this project, the maximum height of the dam is 81m, but the deep overburden in the riverbed has the depth of 147. 95m which is about two times of the maximum height of the dam body, so the seepage and liquefaction prevention of the dam foundation becomes the key and important problem in the design of the dam project. the static stress and deformation under three different projects - horizontal blanket project, clay core project and asphalt core project - for the dam is analyzed comprehensively. the damage that may be induced by variable factors on the dam body in time of engineering completion and water impounding operation period is seriously studied
其次,將這一模型用於分析下坂地水利樞紐工程,由於該工程河床覆蓋層深度最深達147 . 95m ,是壩體高度的近兩倍左右,壩基的滲流和液化成為壩體安全主要問題,本文對該壩的三種設計方案即水平鋪層防滲方案、粘土心墻防滲方案及瀝青心墻防滲方案的靜態應力位移及壩體在竣工期、蓄水期等各個階段可能產生的破壞進行了認真研究。In port engineering, cracks in wharf surface will not only influence the visual quality of project, but also weaken the durability of structures when sea water penetrates into deep cracks and corrodes the internal reinforcement
摘要在港口工程中,碼頭面層產生裂縫,影響工程的觀感質量,海水滲入深度大的裂縫腐蝕內部鋼筋,影響結構的耐久性。Eddy current testing is a method suitable for testing changes occurred in the surface or subsurface of specimen. when using this method to test carburized components, the variable of eddy current signal is depend on the change of constituents " physical property in carburized layer. so it can be used to test carburized components nondestructively
渦流檢測是一種適用於試件表面和近表面變化的檢測方法,利用渦流方法檢測滲碳件時,渦流檢測信號的變化主要取決于滲碳層組織的物理特性的變化,所以渦流檢測方法可以對金屬表面滲碳層深度進行檢測而不構成任何破壞。Steel - iron parts - determination of nitrided case depth and metallographic examination of nitriding structure
滲氮層深度測定和金相組織檢驗Determination of nitrided case depth and metallographic microstructure examination for steel iron parts
鋼鐵零件滲氮層深度測定和金相組織檢驗Steels - determination and verification of the depth of carburized and hardened cases
鋼件滲碳淬火硬化層深度的測定和校核Method of measuring nitrided case depth for iron and steel
鋼和鐵滲氮層深度的測量方法Finite element calculation for test of case - depth using eddy current in carburizing
渦流檢測滲碳層深度中磁感應強度的計算Finite element preprocessor, eddy current electromagnetic field calculation, the postprocessor and the visualization processor were integrated together in the software system, and good graphic user interface was also offered
該系統將有限元前處理、渦流電磁場計算、滲碳層深度逆問題求解及計算結果的可視化處理結合起來,提供了良好的用戶界面。分享友人