模芯棒 的英文怎麼說
中文拼音 [móxīnbàng]
模芯棒
英文
die pin-
In order to verify the effectiveness of steep - front impulse voltage test in finding the internal faults of composite insulator, some insulators with faults, including conductive channel, semi - conductive channels, airy channel, partial little air bubble that occur separately at different place, are modeled. steep - front wave impulse voltage test is made for these faulty insulator and normal insulator
為了檢驗陡波試驗對于發現合成絕緣子內部故障的有效性，分別模擬了絕緣子內部不同部位有導電性、半導電性通道，小氣泡，金屬雜質，長氣泡以及芯棒與護套間不粘連故障的絕緣子，並從三維靜電場計算和用不同陡度的陡波試驗兩個方面進行了驗證。Hard alloy die is made y taking high - quality hard alloy as its nips and fastening with steel die case. it is characterized by high hardness, good thermal conductivity, brasive coefficient and strong resistant to corrosion. it is suitable for drawn metal wire, bar and pipes. the types of dies includes rectangle, hecagon, octagon, diamond, trapezoid, basin and knob, u - shaped and half round types
硬質合金模具採用優質合金作模芯，並用鋼質模套緊固，具有硬度高，導熱性能好，磨擦系數小，抗腐蝕性等特點，適用於拉制金屬線材，棒材，管材等，另外，模具的類型有矩型、六角型、八角型、菱型、梯型、凹型凸型、馬蹄型、半圓型等各種異形模。Specially design co - extruding die, merely need to replace core mandril, it may produce solid - wall pipe, solid wall inner helix pipe foamed pipe and foam inner helix pipe
特殊設計的共擠模頭，只需要換芯棒即可同時生產實壁管、實壁內螺旋管、發泡管、發泡內螺旋管。A way to avoiding crack or reducing crack width of concrete or reducing distortion of member is using prestressed concrete. the writer tried to make full use of the merit of the prestressed concrete and designed prestressed concrete mandril to control crack of structure. the prestressed concrete mandril, which was firstly applied high pressure on a small concrete bar, and then was made in concrete, so it would act as reinforced bar and resist load. in this thesis the writer designed 24 mmnbers and had experimental study of them, reached the conclusion that the effect of resisting crack of the prestressed concrete mandril was good when the load was not large, it can enhance the capacity of resisting crack and reduce the crack distance and crack width, but when the loads was large, the effect of resisting crack was not good, when we used the prestressed concrete mandril and reinforced bar together in member, the effect of resisting crack was very good. the writer analysed the adherence mechanism and wreck mechanism of the prestressed concrete mandril in anxial tension members, and according to the character of the prestressed concrete mandril, the writer constructed the bond model of it. then the writer introduced the analysis theory of crack including the bond - slip theory, the non - slip theory, the synthesis theory and mathematics stat method. the different theory had different theory base, they considered that the primary affection of crack width was different. in this test, the crack distance and crack width of members which placed reinforced bar were match to the compute value of the code gb 50010 - 2002 very well. to the members which
本文共進行了24根試件的試驗研究，得出了預應力混凝土芯棒能較大地提高構件抗裂承載力，在荷載小於預應力混凝土芯棒的開裂荷載時有較好的抗裂效果，能較大地減小裂縫間距和裂縫寬度，但是當荷載較大預應力混凝土芯棒開裂時預應力混凝土芯棒的抗裂效果不是很好，若將普通鋼筋和預應力混凝土芯棒一起使用時則有很好的抗裂效果。本文分析了預應力混凝土芯棒在軸拉試件中的粘結機理和破壞機理，根據預應力混凝土芯棒本身的特點，提出了預應力混凝土芯棒與后澆混凝土之間的粘結模型。然後本文詳細介紹了經典的裂縫分析理論粘結滑移理論、無滑移理論、綜合理論和數理統計方法，各理論有著各自不同的理論基礎，認為影響裂縫寬度的主要影響因素也各不相同。Recommended practice for voltage endurance testing of form wound bars and coils
成型模繞棒和線芯的耐壓試驗的推薦實施規程Its reliability has been tested though examining. the influence laws of mould structure, including wiper die and the style, size and installed position of mandrel, have been studied. combined with the theoretical analysis of perfect pure bending, the tendency of relative bending radius r / d and relative wall thickness t / d to one of the major quality target - the maximum wall thickness reduction ratio is also studied
通過數值模擬研究獲得了包括防皺塊和芯棒形式、尺寸和安裝位置在內的模具結構對製件成形質量的影響規律；結合對理想純彎曲的理論分析，研究獲得了相對彎曲半徑r / d 、相對壁厚t / d對製件主要質量指標之一的最大壁厚減薄率的影響趨勢和大小。The result presents, it is relatively useful for filling in the tooth cavity of big modulus 、 high thickness spur increase to increase suitability height mount piece, and the load of forging spur gears can be decreased by adding a mandrel, but unit area forging force does not cut down, and it has a little influence on filling in the tooth cavity
結果顯示，增加適當高度的鑲件對大模數、高厚圓柱直齒輪齒腔填充比較有利，增加芯棒可以降低齒輪成形載荷，但單位面積的成形力並未減少，且對齒輪的填充性影響不大。The calculation results show that the stress distributing of the plug drawing tube is different because of different dies, the drawing force and pulling force are lager in arc die and the diameter and wall thickness are closer to the designing value in cone die
計算結果表明，不同的模具，芯拔管的應力分佈不同，弧形模成型的拔制力與芯棒后拉力較大，錐形模成型后鋼管的直徑與壁厚更接近設計值。In order to obtain the stress distributing rules of the forming process of short plug drawing tube and the differences of drawing force, pulling force and dimension precision under different dies, fe method was used and fe model of the plug drawing tube under different dies was built
摘要為了獲得不同的模具下短芯棒拔管成型過程中的應力分佈規律以及不同模具對短芯棒拔管拔制力、芯棒后拉力和尺寸精度的影響規律，利用有限元的方法，建立了不同模具下短芯棒拔管成型的有限元模型。The course of developing composite insulators and its large scale application in china are reviewed, and the statistics of domestic operating experience of composite insulators is given. the main failures which appear during the application of composite insulators, such as brittle fracture of rods, mechanical property, interface breakdown, creepage flashover, ageing performance and so on, are summarized and analyzed. the prospects of applying composite insulators in uhv transmission lines are forecasted
回顧了我國復合絕緣子的研製以及大規模應用的歷史，對于國內復合絕緣子在使用中出現的一些主要問題，如芯棒脆斷、機械性能、界面擊穿、沿面閃絡及老化性能等方面進行了統計、分析和總結，最後展望了復合絕緣子在特高壓輸電線路中的應用前景。分享友人