When using optimal modes, energy consumption is (170-190) W / cm2. It matches most of the properties of electrolytes for anodic heating. It was found that the following structures are formed in boron coating: oxide zone (Fe3O4, Fe2O3, FeO) and nitride-martensite layer (Fe3N, martensite and retained austenite). The method of backscattering protons from the nucleus made the concentration of boron in the layer 13% and nitrogen - 11%. After anodizing the needles, their microhardness increases from HB=54-60 to HB=135-150, that is, the microhardness of their work surface increases 2.5-3 times. The increase in the microhardness of the needles leads to a decrease in the cost of replacing them with a new one, as a result of which they are slightly (2-3 times) less bent and broken during the sewing process. After anodic boron-nitriding of the needles, their working surfaces increase the service life of the needles by at least 3 times.
| Mualliflar | Abdullayev, Lazizbek |
|---|---|
| Jurnal | Наманган муҳандисликтехнология институти илмийтехника журнали |
| Nashr sanasi | 2024-09-30 |
| Jild | 9 |
| Son | 3 |
| Betlar | 189-194 |
| Til | Ingliz |
| DOI | 10.61151/stjniet.v9i3.458 |
DOI: 10.61151/stjniet.v9i3.458 · Maqolaning asl sahifasi
vacuum, plasma-cathode, electron sources, electron beams, boron coating, mass charge, plasma nitriding
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