Features of Obtaining Ni-Cr-Fe Alloy Powders by Plasma Atomization
Features of Obtaining Ni-Cr-Fe Alloy Powders by Plasma Atomization
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DOI：
10.4028/www.scientific.net/msf.1040.1
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发表时间：
2021-07
期刊：
影响因子：
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通讯作者：
S. Ermakov;S. Vologzhanina;B. Ermakov
中科院分区：
文献类型：
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作者：
S. Ermakov;S. Vologzhanina;B. Ermakov
对现代工业提出了新的要求，以减少有害物质的排放，提高金属的利用率，减少设备的生产时间，从难以加工的材料中生产零部件，旨在引入新的工艺流程。一种有前途的技术是增材生长，它允许人们最大限度地减少独特产品的生产时间，在其制造中使用难以加工的合金，例如基于Ni-Fe-Cr系统。本研究采用数学规划实验的方法，并在超级计算机上对实验结果进行后续处理。的影响的结果施加到等离子体炬的电流和等离子体形成气体的流速;送丝率在喷涂过程中在发电厂每一个馏分和颗粒尺寸比的体积产量的合适的。产品的最低允许产率设定为30%，生产的馏分范围为40至140微米。对Inconel 718合金获得的结果证实了获得Ni-Cr-Fe合金粉末的可能性。在工作中提出的模式允许获得在喷雾原料的质量的30-35%的水平的商品分数。由所得粉末制成的样品的机械性能和耐腐蚀性的附加测试显示出令人满意的结果，类似于由热处理合金锻件制成的样品的测试结果。
New requirements put forward to the modern industry to reduce harmful emissions increase the utilization rate of metal, reduce the production time of equipment, the production of components and parts from hard-to-process materials aim to introduce new technological processes. A promising technology is additive growing, which allows one to minimize the production time of unique products, to use hard-to-process alloys, for example, based on the Ni-Fe-Cr system, in their manufacture. The study was carried out by the method of mathematical planning of the experiment with subsequent processing of the results on a supercomputer. The results of the influence of the current applied to the plasma torch and the flow rate of the plasma-forming gas are presented; wire feed rates during spraying in power plants per fraction and particle size ratio in the volume of the yield of suitable. The minimum allowable yield of the product is set at 30 % with the production of fractions in the range from 40 to 140 microns. The results obtained for the Inconel 718 alloy confirmed the possibility of obtaining Ni-Cr-Fe alloy powders. The mode proposed in the work allows obtaining commodity fractions at the level of 30-35% of the mass of the sprayed feedstock. Additional tests of the mechanical properties and corrosion resistance of samples made from the resulting powder showed satisfactory results, similar to the results of tests of samples made from heat-treated alloy forgings.