預焊 的英文怎麼說

中文拼音 [yùhàn]
預焊 英文
prewelding
  • 預 : Ⅰ副詞（預先; 事先） in advance; beforehand Ⅱ動詞（參與） take part in
  • 焊 : 動詞（用熔化的金屬修補金屬器物或使金屬工件連接起來） weld; solder
  1. The welding performance of homemade wear - resistant cast steel has been studied base on the weldability tests, the repair welding procedures of wean - resistant cast steel ( abrasion - plates ) have been made up, the results show that satisfying repair welding quality can be attained with such welding conditions as the low hydrogenous alkalescent welding rod, preheating and slow cooling, strictly maintaining the interbedded temperature of 250 ~ 300 and controlling welding technique

    通過對其焊接性能的試驗研究，制定了該類鑄鋼件（磨耗板）的補焊工藝：低氫型堿性焊條，預熱與緩冷相結合的工藝措施，嚴格控制層間溫度（ 250 ~ 300 ）及焊接工藝規范，可獲得滿意的修復質量。
  2. Before repairing, basing on the actual working condition, concerning the weldability, stress and deformation issues, the scheme of the cold welding technology whose essential being gtaw, low temperature preheating, postweld hammer the welded seam was established

    修理前，圍繞兼顧解決焊接性、應力和變形問題，結合實際施工條件制定了以手工鎢極氬弧焊、鎳基焊絲、焊前低溫預熱、焊后錘擊焊縫為要素的冷堆焊工藝。
  3. Selection of preheated temperature for tgp penstock welding

    三峽工程左岸電站引水壓力鋼管焊接預熱溫度的選擇
  4. With an introduction of the influences of the final quality of rail aluminothermic welding, such as : the quality of welding kits ( esp. the portion ), the result of pre - heating, the welding operation and the level of operators etc., this paper analyzes some problems when rail welding under special conditions

    摘要介紹了焊接材料質量、預熱效果、操作人員水平等因素對鋼軌鋁熱焊接接頭質量的影響，以及幾何誤差不同、軌頭寬度不等、寒冷氣候等特殊條件下進行鋁熱焊接應注意的問題。
  5. The examination must occur within the seven ( 7 ) months prior to the scheduled date of your welding inspection examination or re - certification anniversary date

    此檢查必須在您預定參加之焊接檢驗考試或再次認證日期前七個月內進行。
  6. Methods of test for ancillary components for masonry - part 3 : determination of shear load capacity of welds in prefabricated bed joint reinforcement

    圬工輔助成份試驗方法.第3部分:預制床連接處增強的焊接剪切負載能力測定
  7. In this paper, three unique models were designed to research atom diffusion at interface, contacting line and joining point under bpec heating and compare with it under radiation heating in order to find out if bpec speed atom diffusion. the first model was aimed to research atom diffusion at interface under bpec heating. experiment condition of bpec diffusion welding sheet cu and ni : direct diffusion welding, at a pressure of l0mpa, welded at 750 ~ 900, with heat rate of 200 ~ 400 / min for 10mm, on / off of 6 / l ~ 48 / 8, with die or not, vacuum of 6pa

    本文設計出三種樣品預構件，研究脈沖大電流加熱條件下片狀材料、線狀材料和球形顆粒之間的原子擴散過程，弄清脈沖大電流加熱條件下原子擴散與一般燒結和焊接過程中原子擴散的區別，以證實特殊的電場和磁場是否對原子的擴散有推動作用，揭示脈沖大電流加熱條件下原子的擴散過程，探索脈沖大電流熱加工技術快速高效的原因。
  8. Factory - made wrought steel buttwelding induction bends for transportation and distribution systems

    傳輸和分配系統用工廠預制鍛鋼對焊感應管彎頭
  9. Unique joint start function with 852d + desoldering station and 863e preheater has same step heating to protect pcb and bga

    獨設聯機開啟功能， 852d +拆焊機與863e預熱臺同步發熱，保護pcb及bga 。
  10. It is proved that the connection and steel frame with beam flange dog - bone reduced have superior behavior to the frame of conventional design and the brittle failure is avoided in the steel frame. and conditions of stress development in the dog - bone, and the reason of the brittle failure in the rigid connections is obtained

    了解了狗骨處應力發展狀況；探討了剛性連接發生脆性破壞的原因；並強調指出樑柱連接處焊縫的焊接質量，對能否發揮狗骨式削弱的作用，達到預期的設計目的是至關重要的，必須予以重視。
  11. Occupational damages on electric welder and prevention

    電焊工的職業危害及預防
  12. Aimed at the automatic welding of the air - separate equipments. a computer control system for double - side automatic tig erect welding has been developed in this paper, which can keep the welding parameters of two welding torches consistent, and adopt a high - power and centralized energy fountain, and can take warm - up casually. the control system can assure a higher welding quality and a better work condition and a higher productivity than before

    為實現空分設備的焊接自動化，本文研究開發一種雙面自動tig立焊計算機控制系統，採用大功率和能量集中的熱源，克服了由於預熱而使手工焊接工人勞動環境的惡化，同時使得兩把焊槍的焊接參數保持一致，從而可得高的焊接質量，改善焊工的勞動條件，大大提高勞動生產率。
  13. Abstract : there are four phases and dozens of parameters in preheating flash butt welding technology used for great section workpiece ' s welding

    文摘:用於焊接大截面工件的預熱閃光焊工藝包括四個階段。
  14. This paper analyzes the cause of small concaves around the welding seam in the long rail of guangzhou metro line 2, and presents preventive measures, such as increasing the under layer of the rail, limiting the weld seam, lowering the welding temperature etc

    摘要結合廣州地鐵2號線接觸焊焊接長鋼軌的實踐，分析了產生焊頭表面小凹痕的原因，提出改變墊高鋼軌的方式、縮小正火范圍、降低正火溫度、限制接頭錯牙量等預防措施。
  15. Simulation on tig welding of aluminum alloy plate and residual stress predicting

    鋁合金平板鎢極氬弧焊數值模擬與殘余應力預測
  16. Testing of solderability for soft soldering ; vertical dipping test for pre - tinned specimens ; testing ; assessment

    軟釬焊可軟釬性的檢驗.預鍍錫試樣的垂直浸漬試驗.檢
  17. Welding - test for shop primers in relation to welding and allied processes - part 3 : thermal cutting

    焊接.與焊接和相關工藝有關的預塗底漆的試驗.第3部分:熱切割
  18. Welding - test for shop primers in relation to welding and allied processes - part 1 : general requirements

    焊接.與焊接和相關工藝有關的預塗底漆的試驗.第1部分:一般要求
  19. Welding - test for shop primers in relation to welding and allied processes - part 4 : emission of fumes and gases

    焊接.與焊接和相關工藝有關的預塗底漆的試驗.第4部分:煙氣排放
  20. Welding - test for shop primers in relation to welding and allied processes - part 2 : welding properties of shop primers

    焊接.與焊接和相關工藝有關的預塗底漆的試驗.第2部分:預塗底漆的焊接性能
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