QN1803 (304D) ipu u'amea uamea
1. Fa'amatalaga:
O le oloa fou vasega QN1803 o le lalolagi muamua maualuga nitrogen, maualuga corrosion tete'e, nickel-sefe austenitic oloa uamea.
I luga o le faʻavae o le faʻamautinoaina o le faʻafefeteina e tutusa ma le 304 uʻamea uʻamea, faʻaleleia le malosi o meafaitino, ma meafaitino.
ua fa'aitiitia le tau, ua sili atu le taugofie ma sili atu le tauvaga i le maketi nai lo 304 uamea stainless.
Fa'ailoga fou o le tu'ufa'atasiga o oloa: maualuga le nitrogen (≥2000ppm), chromium maualuga (≥18%), nickel medium (~ 3.0%) ma le kopa maualuga (≥1.5%).
E ala i le fa'afuainumera R&D platform Thermo-Calc thermodynamic phase diagram polokalama fa'atatauina ma fa'ata'ita'iga su'esu'ega fa'amaumauga, fetu'una'i le
elemene faʻafefiloi o vaega taʻitasi vaega e le gata e faʻaleleia ai le faʻaleagaina o le oloa, ae faʻamalosia ai foi le malosi o le QN1803
sili atu i le 1.3 taimi nai lo le 304.
QN1803 ei ai uiga nei:
1) o le pitting corrosion tutusa PREN=Cr+3.3Mo+30N-Mn o loʻo i luga aʻe o le 19.0, o loʻo i ai le itiiti ifo i le tutusa o le paʻu o le 304.
apa siliva.
2) o le faʻafefete tutusa i le faʻafefeteina o le hydrochloric acid, faʻafefete sulfuric acid, acetic acid + masima ma isi siosiomaga e sili atu nai lo
304 uamea uamea.
3) e sili atu le tetee o le corrosion nai lo le 304 i le tulaga faʻaoga moni pe a uma ona punou, faʻailoga, tulaga faigata ma isi mea malulu.
4) o le malosi e maua mai e sili atu i le 1.3 taimi o le 304 stainless steel, ma o loʻo i ai le faʻalauteleina o le le itiiti ifo i le 45%. La'ei tetee ma
galuega vaivai e sili atu nai lo 304 uamea stainless.
5) lelei le faʻaogaina, o le malosi pe a uma le uʻamea e maualuga atu nai lo le 304 uʻamea uʻamea, ma o le faʻafefeteina e
fa'atusa i le sila 304 uamea.
2. Fa'atusatusaga ma 304 meafaitino:
| Vasega | Su'ega vaila'au (Max%) | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N | PREN | |
| 304 | 0.04 | 0.4 | 1.02 | ≤0.035 | 0 | 18.1 | 8.02 | 0.02 | 0.1 | 0.05 | 18.96 |
| QN1803 | 0.07 | 0.41 | 6.32 | ≤0.035 | 0 | 18.2 | 3.03 | 0.12 | 1.62 | 0.24 | 22.43 |
| 1.4376 | ≤0.10 | ≤1.00 | 5.0-8.0 | ≤0.045 | ≤0.015 | 17-20.5 | 2.0-4.5 | / | / | ≤0.30 | / |
3. Fa'atusatusaga o mea totino:
4. Coil ma pate fa'aalia:
5. Tilivaina ile loli:
6. utaina o pusa:
7.Talosaga:
➢ Alamanuia faufale: fau fale, puipui, purlins, vaega faufale e amoina uta, ma isi.
➢Mata'avale faitoto'a ma fa'amalama: e pei o alavai o le fola, fa'amau, fa'amau, fa'ase'e ala, ma isi;
➢O paipa uelo teuteu: e pei o pa, pa puipui, faasitepu escalators, faamalama puipui, ma isi;
➢Pipa uelo fa'apisinisi: e pei o paipa kesi, paipa otaota;
➢Koneteina o tane fa'apisinisi: e pei o koneteina a'au, 'olo e fa'asaoina le kesi;
➢ Mea faigaluega fa'afailele: e pei o le fafaga pua'a, fa'afefeteina o le ie lua;
➢ Nofoaga fa'apitonu'u: e pei o fale pasi, fale tumama.
