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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


二连浩特xiao-zi-7-3

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二连浩特xiao-zi-7-3

  • Classification:二连浩特Daewoo exchange series

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  • Date:2019/11/06
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Due to the low hardness, poor abrasion resistance and toughness of the front teeth and main cutter disc of the loader and excavator bucket, brittle fracture is easy to occur under the dual action of abrasive impact force and sliding friction.According to incomplete statistics, China consumes hundreds of tons of teeth and main leaves every year.

Surfacing welding is a layer of wear resistant alloy on the surface of carbon steel or low alloy steel parts.This can not only improve the wear resistance of the parts, meet the use requirements of the main cutter disc and bucket teeth, but also maintain the strength and toughness of the original parts, reduce the cost of the original substrate.When selecting the surfacing welding method, the following requirements should be met: low dilution rate, high deposition rate and high efficiency, workpiece size, shape complexity and batch size;Low overall cost.

Considering the concrete structure of bucket and the above factors, manual arc welding can be used.

The choice principle of surfacing metal: one is to meet the performance requirements of the parts.Second, it has good weldability, should be easy to be welded in the field conditions, and obtain a good combination with the substrate surfacing welding layer, and no defects;The solubility of the surfacing metal and the substrate should be paid attention to, and the influence of the substrate dilution on the performance of the surfacing layer should be fully estimated.When the carbon equivalent of the matrix is high, preheating, insulation and buffering technologies can be considered to prevent cracking.If this is not feasible, a transition layer solution may be considered.Thirdly, considering the economy of surfacing welding, the surfacing alloy should be one of many alloys with the same performance, and it should also be one of the simplest welding process and processing cost.

Due to the strong impact on the main cutter disc and bucket teeth, the overlaying alloy electrode should be selected.According to this requirement, 4102 and 1102 electrodes with high cost performance were finally selected through consulting materials and tests.

        

        

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