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Ningbo lingfeng wear parts Co.LTD 

Add: yunlong town, yinzhou district, ningbo city, zhejiang province

Tel:0574-88474588   88344728

Fax:0574-88345728

E-mail:Master@nblfcast.com  

             John@nblfcast.com 

Website:en.getlf.com


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Your current location: Home >> Product >> Hitachi exchange series

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  • Classification:Hitachi exchange series

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  • Date:2019/10/09
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优化资料:

    小松挖掘机斗齿基体材料大多数为奥氏体组织高锰钢(钢号ZGMn13),因此在焊接修复时选用型号为EDMn-B-16(牌号D266)高锰钢堆焊焊条。这种焊条的填充金属为奥氏体组织高锰钢,并且填充金属中还添加了钼,从而提高了焊缝金属的抗裂性和耐磨性,因此使用该焊条的堆焊后的斗齿表面具有加工硬化、韧性高和耐磨性好的特点,堆焊金属表面硬度可以达到HB170

    由于ZGMn13属于高碳钢其焊接性比较差:一方面是在焊接热影响区中容易析出碳化物从而引起材料脆化;另一方面是焊缝热裂纹倾向较为严重 ,特别是在近焊缝区容易产生液化裂纹。所以施焊前,须制定合理的焊接工艺,以保证堆焊金属层的质量减少焊接缺陷的产生。

    

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