最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
電觸點(diǎn)感應(yīng)釬焊及控制
DOI:
作者:
作者單位:

浙江大學(xué) 浙江加州國際納米技術(shù)研究院,浙江大學(xué) 浙江加州國際納米技術(shù)研究院,溫州宏豐電工合金股份有限公司,浙江大學(xué) 浙江加州國際納米技術(shù)研究院,浙江大學(xué) 浙江加州國際納米技術(shù)研究院,溫州宏豐電工合金股份有限公司

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

(浙江省科技計(jì)劃項(xiàng)目,項(xiàng)目號2017C01051；浙江省自然科學(xué)基金,LQ17E010002)


Analysis and Control on Induction Brazing of Electrical Contacts
Author:
Affiliation:

Zhejiang-California International NanoSystems Institute,,,,Zhejiang-California International NanoSystems Institute,

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    本文求解了適用于電觸點(diǎn)感應(yīng)釬焊的電磁場及熱場耦合方程,獲得了二維電觸點(diǎn)感應(yīng)釬焊的理論解,并建立了電觸點(diǎn)感應(yīng)釬焊的有限元模型,二者對比分析,驗(yàn)證了有限元方法分析電觸點(diǎn)感應(yīng)釬焊的可行性。數(shù)值結(jié)果表明：焊接區(qū)域的溫度在靠近電觸點(diǎn)邊界的位置最高,越靠近電觸點(diǎn)中心位置的溫度越低。線圈增加鐵氧體后,電觸點(diǎn)中心位置與電觸點(diǎn)邊界位置的焊膏熔化情況更為接近,一定程度上改善了焊接面溫度的不均勻分布。另外,線圈改進(jìn)前后,焊接時(shí)間均隨著焊接電流的增大而減少。相同焊接電流參數(shù)下,使用了纏繞有鐵氧體的感應(yīng)線圈只需花費(fèi)更少的時(shí)間就可達(dá)到所需溫升,這大大提高了電觸點(diǎn)組件的焊接效率。因此,我們可通過在感應(yīng)線圈中間增加鐵氧體來改善感應(yīng)釬焊溫度不均勻分布,以及縮短焊接時(shí)間,從而提高電觸頭感應(yīng)釬焊的焊接質(zhì)量和焊接效率,這對電觸點(diǎn)材料的焊接有一定的指導(dǎo)意義。

    Abstract:

    Analytical solution is proposed for induction brazing of electrical contacts by solving coupled equations of electromagnetic field and thermal field. And a finite element model is presented in the paper to simulate induction brazing of electrical contact. The numerical results agree well with the analytical results. Therefore the feasibility of simulation analysis of induction brazing using finite element method is fully validated. Numerical results show that, the temperature near the boundary of electrical contacts is the highest in the brazing region. The closer to the center of brazing region, the lower the temperature. In addition, when induction coil wound with ferrite, the state of melting the solder near the center of electrical contact becomes more similar to the state near the boundary of electrical contact, accordingly nonuniform distribution of the temperature at brazing interface is improved to a certain extent. Further more, whether the induction coil optimized or not, the brazing time all decreases with the increase of brazing current. And under the same brazing current, it costs less time to obtain the required temperature rise when using the coil wound with ferrite. This indicates that the use of ferrite to optimize induction coil will improve nonuniform temperature distribution of induction brazing, which will also saving brazing time, thus improving brazing efficiency and brazing quality.This has certain instructive significance to the brazing of electrical contact material

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王蕾,楊輝,祁更新,樊先平,張玲潔,吳新合.電觸點(diǎn)感應(yīng)釬焊及控制[J].稀有金屬材料與工程,2018,47(S2):35~39.[Wang Lei, Yang Hui, Qi Gengxin, Fan Xianping, Zhang Lingjie, Wu Xinhe. Analysis and Control on Induction Brazing of Electrical Contacts[J]. Rare Metal Materials and Engineering,2018,47(S2):35~39.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2017-12-12
  • 最后修改日期:2017-12-12
  • 錄用日期:2018-02-01
  • 在線發(fā)布日期: 2018-11-01
  • 出版日期: