bridge welding 中文意思是什麼
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The structure of bridge housing with different thickness after optimization changed the traditional domestic designing scheme, thus provided a new designing train of thought for later design of punching - welding bridge housing
優化后的不等厚橋殼結構改變了國內傳統的設計方案，為以後的沖焊橋殼設計提供了新的設計思路。 -
By means of carrying out parameterization on finite element model of certain punching - welding bridge housing and through optimization analysis, this paper realized the light weighted optimization design of punching - welding bridge housing under the conditions of letting the bridge housing to satisfy the demands of perpendicular bending rigidity, the perpendicular bending strength and the perpendicular bending fatigue life
摘要通過對某沖焊橋殼的有限元模型進行參數化，經過優化分析，使得橋殼在滿足垂直彎曲剛度、垂直彎曲強度和垂直彎曲疲勞壽命的條件下，實現了沖焊橋殼的輕量化設計。 -
Tianjin golden bridge welding materials group co., ltd. is a welding material manufacturer located in the development area of dongli district, tianjin china
我公司是目前國際國內大型焊材企業，生產經營「金橋焊材」 。 -
The paper describes structural features, assembling and welding procedure of the anchor box of wuhu - changjiang great bridge
介紹了蕪湖長江大橋錨箱的結構特點及組焊工藝，提出了控制焊接變形的幾項有效措施，以及採用該工藝收到的良好效果。 -
Application of electroslag welding in high bridge pier
鋼筋電渣壓力焊在高橋墩上的應用 -
The riveting and welding plant of the company has a very strong technical force, the technical personnel makes up more than 1 3 of the total staff, the company can also undertake the manufacture of various metallurgical structural equipment, formwork, gang board, oil tank, water tank, pipeline and dust - collecting and environmental protection equipment of various sizes, the company also undertakes the construction of bridge, concrete building as well as underwater and high - altitude operations from omniberaing etc. no matter what sizes and shapes of the forging and casting spare parts including special - shaped parts, we will never refuse you and promise to satisfy you with best quality and finish the task on schedule
公司鉚焊廠，技術力量十分雄厚，工程技術人員，佔全體員工的三分之一以上，可以承攬加工各種金屬結構設備模板跳板油罐水罐管道工程各種型號除塵環保設備，再如橋梁鋼筋混凝土建築，水下高空全方位作業等，除些之外，關于鑄造鍛造等工作不論大，中，小型部件，也能做到來而不拒，保證，保質，保量按期完成任務。 -
Technology of submerged - arc welding in fabrication of steel bridge
埋弧焊在鋼橋製作中的工藝 -
The variable polarity power supply circuit uses two stages full - bridge inverter, the former inverter is regarded as a constant - current source with fast dynamic response, and supplys energy for the second one, and the latter one is to produce variable polarity current excellently, and low - frequency pulse current by variable polarity power supply is used to reduce input energy and control the shape of weld bead while welding. a series of high - frequency pulse current is superposed on direct - current - electrode - negative ( dcen ) current through the high - frequency pulse power supply, which is used to compress the arc and improve process of crystallization
其中變極性電源採用二次全橋逆變結構，一次逆變提供快速的響應速率並給二次逆變提供能量，二次逆變提供良好的變極性性能，使輸出能量最優化，並用其低頻電流特性減小電弧線能量，控制焊縫成形;高頻脈沖電源提供的高頻電流疊加在反極性電流dcen上，利用電流的高頻特性壓縮電弧，改善焊縫金屬結晶過程。 -
Dpca has established stamping, welding, painting and assembling process workshops, as well as engine, transmission and car bridge machining shops
在武漢和襄樊兩地分別建有沖壓、焊裝、塗裝、總裝四大工藝裝配廠及發動機、變速箱、車橋機加工廠。 -
Remarkable electricity consumption saving, especially suitable for welding of large - scale steel structure ( bridge, pipeline etc )
節電優勢特別明顯，特別適用於大型鋼構工程（如橋梁，管道）等厚大鋼結構高性能焊接工藝 -
The maximal power outputs of 37. 0 mw / cm2 and 30. 0 mw / cm2 for the p - and n - type laminated materials respectively at the temperature difference 490 have been experimentally obtained, which are about 2. 5 and 3. 0 times those of - fesi2. chemical analyses show that the interface failure between the bridge alloy and the semiconductor bi2te3 results mainly from the eutectic mixtures with low melting point and brittle compounds formed during welding and long time annealing at 190. it is found that the electrical properties of a laminated structure are mainly controlled by the wettability of the bridge alloy on the semiconductor surface
發現： 1 ）疊層材料具有明顯優于均質材料的熱電性能，在490溫差下， p -型和n -型疊層材料的最大輸出功率分別達到37 . 0和30 . 0 （ mw / cm ~ 2 ） ，是同類型均質- fesi _ 2的2 . 5和3倍； 2 ）在焊接過程和190長時間退火處理過程中，焊接過渡層合金和基體半導體（特別是bi _ 2te _ 3 ）之間存在明顯的元素相互擴散，從而在過渡層中形成一些低熔點共晶體和脆性化合物，這是導致疊層材料破壞的主要原因； 3 ）焊接過渡層合金與半導體基體之間的潤濕性是影響界面層電性能的主要因素。 -
The riveting and welding plant of the company has a very strong technical force and a lot of the technical personne, we have kinds of equipments in the milling, shaving, grinding and so on, all kinds of machine parts are made in our company including the biggest parts and the smallest screw - thread steel and lead - screw drive, for example, structural projec, rivet welding parts, bridge building, plant building, tunnel ect, we can also undertaking,
我公司下屬機械加工鉚焊分廠，實力雄厚科技人員眾多。在銑刨磨各種設備都有。大至工作母機，小至絲桿絲帽，能生產各種難度較高的機床設備，又如結構工程鉚焊機件橋梁建築廠房隧道等等，也能精工承攬。 -
Type nhss wire rope pulling hoist is widely suitable for use in bridge - construction, laying of large - size pipes, installation and adjusting of machinery an electric apparatus, and large reaction tower of petrochemical industry ; the installation and alignment of storage tanks ; erecting, fitting, welding and alignment of masts, steel concrete timber structures ; laying and translocating of rails and sleepers ; loading and unloading bulky heavy goods during transportation. cable tensioning ; demolishing of gallery supporting logs ; stacking forrestry wood ; and othersimilar cases. the hoist of this series is especially suitable for use in narrow working sites of limited space, where the job is high above the ground or in open air places, in tunnel of deep well, where no power for traction or lifting is available
Nhss型鋼絲繩手扳葫蘆可廣泛用於建築施工、大型管道鋪設、機電設備和石油化工大型反應塔、儲罐的安裝、校準、鐵塔及其它鋼木結構的豎立、拼裝焊接、校準、鐵軌、枕木的鋪設、移位、交通運輸中笨重貨物的裝卸、電線張緊、坑道支撐木的拆除、林區木材的集放等等，對于局部空間受到限制的狹窄工作場所、高空作業、野外作業、坑道、深井作業和無機電供能場所的各種牽引、提升作業、選用本系列產品尤為適宜。 -
Welding workmanship for big type movable model for main beam manufacture of bridge girder erection machine
75節段拼裝式架橋機液壓系統設計實踐 -
This paper researches the digital characteristics of the welding power supply and the main circuit of the full bridge high power soft - switching. nowadays, welding machines usually apply the hard - switching as the topology, which causes the problem of higher loss and lower efficiency
目前焊接逆變電源所應用的大功率電路多採用硬開關電路，這樣在功率器件導通和關斷過程中會產生很大的損耗，並且隨著逆變頻率的提高，損耗會增大，這樣就降低了焊機的效率。 -
Export : thyrister, power module, ssr, rectifier bridge, industrial ceramic and furnace, welding machine and switch
出口：晶閘管、功率模塊、固態繼電器、整流橋及工業陶瓷、工業電爐、焊機和開關設備。 -
The problem is much more critical when the inverter frequency is high. in a welding machine, the main circuit with the technology of the soft - switching is much idealer than the hard - switching. firstly of all, by the theory of the soft - switching, this paper relatively analysis the advantages of the soft - switching and, with the help of the simulation software pspice, analyzes the main circuit of the full bridge shift - phased zero voltage zero current ( zvzcs ) soft - switching
結合軟開關實現原理，本文首先對比分析了軟開關在提高效率、降低emi干擾等方面的技術優勢，通過pspice軟體模擬，分析研究了全橋移相零電壓零電流（ zerovoltagezerocurrent - - - - zvzcs ）軟開關電路，詳細介紹了該電路的軟開關實現過程，並給出了電路模型和關鍵元件的設計參數。 -
Bridge welding code
橋梁焊接規程 -
This paper presents the welding quality control measures and welding methods prepared in accordance with the working time, site conditions and elements of the steel tube arches of lhasa river bridge, and also describes in details the procedure control, methods and criteria for inspection and acceptance of the welding operation
摘要介紹拉薩河特大橋鋼管拱焊接質量控制措施，因時因地因件制定焊接方法，強調焊接的過程式控制制、檢驗和驗收的方法、標準。 -
Abstract : the multifunctional inverter power sourcethe handy inverter welding, plating & charging manchine, developed with advanced inverter and micro - electronics control techniques, adopts “ half - bridge power expansion supply midpoint voltage autocontrol setting ”, and technically and effectively having solved inverter subvision of inverter power expansion circuit for leaning magnetism, reliability of high - power inverter setting, achives combination of constantcurrent and constantvoltage export, and realizes low - voltage dc and high - voltage ac double power supply
文摘:運用先進的高頻逆變技術和微電子控制技術設計研製的逆變式多功能電源便攜式逆變焊鍍充電多用機，採用「半橋式功放級供電中點電壓自動控制調節裝置」 ，在技術上解決了逆變功放電路因偏磁而造成的逆變顛覆，有效地解決了大功率逆變器的可靠性問題；進行多種外特性的綜合設定，實現了恆流與恆壓輸出的合一；與傳統焊機相比，實現了開環和閉環狀態下都互不影響的低壓直流電瓶和高壓交流雙供電
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