Methods of wide layer surfacing of wear-resistant alloys
DOI:
https://doi.org/10.31498/2225-6733.33.2016.104760Keywords:
wide layer surfacing, wear-resistant alloy, powder strip, electrode material, share of the base metal, the deposited metalAbstract
A comparative analysis of known methods of wide layer surfacing of wear-resistant alloys with different surfacing materials has been made. The technological schemes of surfacing are described and discussed. The advantages and drawbacks of different surfacing methods have been analyzed. The only generally accepted method is a single-pass welding as a result of which one roller forms. It has been shown that wide-layer surfacing makes it possible to get the desired chemical composition and the desired geometric dimensions of the deposited layer. It has been shown that for wide-layer surfacing of wear-resistant alloys in different ways there must be minimum contents of the base metal in the weld. Welding regimes adjusting and selecting proper powder electrode design can provide proper joining of the base and deposited metal. Obtaining the required chemical composition of the deposited layer depends on the share of the base and deposited metal, it depending on the welding process. It is necessary to apply several layers surfacing to obtain the required geometric parameters of the deposited coating layer. The recommendations for practical applications of wide layer surfacing concerning wear resistant alloys and powder strips have been formulaReferences
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