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Special hot spraying wire for biomass boiler

A biomass boiler and thermal spraying technology, which is applied in the direction of coating, molten spraying, metal material coating process, etc., can solve the problems of air pollution, waste of resources, etc., and achieve improved operating cycle, high joint strength, and good wear resistance sexual effect

Active Publication Date: 2015-06-17
JIANGXI HENGDA HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Every year, more than 200 million tons of remaining crop straws that cannot be processed are directly burned in the field, which not only wastes resources, but also causes serious air pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take Ni52.0%, Cr24%, Mo10.0%, Fe5.0%, Ti2.5%, Al1.5%, Nb2.0%, Ta1.5%, Co1.0%, C0.5%, will The prepared materials are melted in a vacuum induction furnace, cast into alloy ingots after melting, and made into arc sprayed wires with a diameter of 3.0mm through forging, rolling, wire drawing, heat treatment and other processes, which can be extended under the conditions of biomass boilers. Four tubes" life 2-3 times.

Embodiment 2

[0021] Take Ni50.0%, Cr23%, Mo9.0%, Fe6.0%, Ti2.5%, Al2.5%, Nb2.0%, Ta2.5%, Co2.5%, put the prepared materials Melted in a vacuum induction furnace, cast into an alloy ingot after melting, and made into a 2.4mm diameter arc sprayed wire through forging, rolling, wire drawing, heat treatment and other processes, which can prolong the life of the "four tubes" under the working conditions of a biomass boiler3 -4 times.

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PUM

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Abstract

The invention relates to a hot spraying material, in particular to a high-chromium molybdenum nickel-based alloy and a spraying wire produced thereby, belonging to the technical field of corrosion resistant materials. The wire comprises the following components in percentage by weight: 45.0-55.0% of Ni, 22.0-27.0% of Cr, 7.0-11.0% of Mo, 4.0-7.0% of Fe and 2.0-3.5% of Ti. The corrosion resistant wear-resisting coating has the characteristics of high bonding strength, fine corrosion resistance to NaCl, KCl, NH, NOx, H2S and SO2, excellent wear resistance and the like. Besides, the coating is not subject to hole sealing, and can obviously prolong the operating cycle of the biomass boiler.

Description

technical field [0001] The invention relates to a thermal spraying material, in particular to a high-chromium-molybdenum-nickel-based alloy and a spraying wire made thereof, and belongs to the technical field of corrosion-resistant materials. Background technique [0002] and environmental issues have become the focus of global attention. Economic development and development have caused energy shortages. Developed countries have adopted strict control measures for environmental pollution and are actively looking for new alternative energy sources. As a large agricultural country, my country is expected to produce 726 million tons of crop straw annually by 2010. Every year, more than 200 million tons of remaining crop residues that cannot be processed are directly burned in the field, which not only wastes resources, but also causes serious air pollution. The incineration of biomass waste can not only meet the requirements of environmental protection, but also make full us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/08
Inventor 不公告发明人
Owner JIANGXI HENGDA HI TECH CO LTD