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Efuefu fa'avevela fa'avevela - DG.Ni20Cr (pa'u pa'u fa'avae)
Ulua'i mo Mea Sima

Efuefu fa'avevela fa'avevela - DG.Ni20Cr (pa'u pa'u fa'avae)

Fa'aigoaina Vailaau: Ni 80%, Cr 20%
Gaosiga Fa'agasologa: Fa'atosinaga kasa
Fa'aogaina Fa'agasologa Fa'avela: Fa'asalaina o le Ultrasonic, fa'aulu plasma
Malosi o Nonoa: >70MPa
Porosity: Fua Faatatau: 55-60%
Fua Fa'atatau: 4.5g/cm³
Lapo'a: 150-300 mesh, 300-400 mesh, 300-500 mesh
Fua o le tafe: 150-300 mesh, tafe 17s / 50g
Le maualuga o le vevela o le faʻapipiʻiina: 800 ℃

    Fa'amatalaga o oloa

    O le DG.Ni20Cr (paʻu muamua) o se paʻu vevela vevela maualuga e saunia e faʻaogaina ai le faʻaogaina o le ea. O lona vailaʻau faʻapitoa e aofia ai le 80% nickel (Ni) ma le 20% chromium (Cr). O lenei paʻu e fetaui lelei mo faiga faʻapipiʻi supersonic ma plasma, faʻatupuina se maualuga-malosi, mafiafia lapisi muamua i luga ole substrate surfaces.
    O loʻo faʻaalia e le faʻapipiʻi le faʻatinoga mataʻina, faʻatasi ai ma le malosi faʻapipiʻi e sili atu i le 70 MPa, o le porosity i lalo ifo o le 0.8%, ma le faʻaogaina lelei o le 55%-60%. O le pauta o loʻo i ai le tele o le mamafa e tusa ma le 4.5 g/cm³, faʻaalia lelei le tafe ma le mautu o felauaiga. Ole fua ole tafe mo le 150-300 mesh tele e tusa ma le 17 sekone/50g. Fa'alagolago i mea e mana'omia e fa'asalaina, o lo'o maua fo'i lenei mea i lapopo'a eseese, e aofia ai le 300-400 mesh ma le 300-500 mesh.
    O lenei ufiufi e mafai ona faʻaauau pea i totonu o siosiomaga vevela maualuga i lalo ifo o le 800 ℃, faʻaalia ai le teteʻe lelei i le faʻamaʻiina o le vevela. I talosaga, DG.Ni20Cr e masani ona faʻaaogaina e avea o se peleue faʻavae mo le tungsten carbide poʻo le oxide ceramic coatings. E faʻaleleia lelei le pipii i le va o le ufiufi ma le substrate, faʻaitiitia le faʻalavelave faʻatupuina i totonu o le sima i le taimi o le uila vevela poʻo lalo o le atuatuvale, ma maua ai se paʻu lelei ma suiga suiga. E le gata i lea, o lenei mea e talafeagai foi mo le suaina o sini nickel-chromium, ma e lautele lona aoga aoga i luga ole inisinia ma toe gaosia.

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