Njirimara izugbe
Alloy 2205 duplex igwe anaghị agba nchara bụ 22% Chromium, 3% Molybdenum, 5-6% Nickel nitrogen alloyed duplex igwe anaghị agba nchara efere na elu general, mpaghara na nrụgide corrosion iguzogide Njirimara na mgbakwunye na elu ike na magburu onwe mmetụta siri ike.
2205 igwe anaghị agba nchara tubing
Alloy 2205 duplex igwe anaghị agba nchara na-enye pitting na crevice corrosion eguzogide karịa 316L ma ọ bụ 317L austenitic igwe anaghị agba nchara na ihe fọrọ nke nta niile corrosive media.Ọ nwekwara nnukwu corrosion na mbuze ike ike ọgwụgwụ yana mgbasawanye thermal na ịdị elu nke okpomọkụ karịa austenitic.
Ike mkpụrụ dị ihe dị ka okpukpu abụọ nke igwe anaghị agba nchara austenitic.Nke a na-enye onye mmepụta ohere ịchekwa ibu ma mee ka alloy dịkwuo ọnụ ahịa ma e jiri ya tụnyere 316L ma ọ bụ 317L.
2205 igwe anaghị agba nchara tubing
Alloy 2205 duplex igwe anaghị agba nchara dabara adaba maka ngwa na-ekpuchi -50°F/+600°F okpomọkụ nso.Enwere ike ịtụle ọnọdụ okpomọkụ na-abụghị nke a mana ọ chọrọ ihe mgbochi ụfọdụ, ọkachasị maka ụlọ agbadoro.
2205 igwe anaghị agba nchara tubing
Nguzogide corrosion
General corrosion
N'ihi nnukwu chromium (22%), molybdenum (3%), na nitrogen (0.18%) ọdịnaya, ihe nguzogide corrosion nke 2205 duplex igwe anaghị agba nchara dị elu karịa nke 316L ma ọ bụ 317L n'ọtụtụ gburugburu.
Nguzogide nrụrụ dị na mpaghara
Chromium, molybdenum, na nitrogen na 2205 duplex igwe anaghị agba nchara na-enyekwa ezigbo nguzogide pitting na crevice corrosion ọbụna na ngwọta oxidizing na acidic.
Isocorrosion Curves 4 mpy (0.1 mm / yr), na ngwọta sulfuric acid nwere 2000 ppm
Nguzogide mmebi nke nrụgide
Amara microstructure duplex ka ọ na-eme ka nrụgide corrosion mgbawa nke igwe anaghị agba nchara pụta.
Chloride nchekasị corrosion mgbawa nke austenitic igwe anaghị agba nchara nwere ike ime mgbe ọnọdụ dị mkpa nke okpomọkụ, tensile nrụgide, oxygen, na chlorides dị.Ebe ọ bụ na anaghị achịkwa ọnọdụ ndị a ngwa ngwa, nrụgide corrosion cracking na-abụkarị ihe mgbochi iji 304L, 316L, ma ọ bụ 317L.
2205 igwe anaghị agba nchara tubing
Mgbochi ike ọgwụgwụ nke corrosion
Alloy 2205 duplex igwe anaghị agba nchara na-ejikọta ike dị elu na nguzogide corrosion dị elu iji mepụta ike ike ọgwụgwụ corrosion dị elu.Ngwa nke akụrụngwa nhazi dị n'okpuru ma gburugburu ebe obibi na-emebi emebi na ịkwanye okirikiri nwere ike irite uru na njirimara nke efere igwe anaghị agba nchara 2205 duplex.
Okpomọkụ dị egwu dị na 1M NaCl A tụrụ ya site na iji Outokumpu Stainless, Inc Pitting Cell
Okpomọkụ Corrosion Critical Crevice Corrosion (CCT) na 10% FeCl3•6H2O
Nrụrụ izugbe na usoro mmiri mmiri phosphoric acid
| Ọnụego corrosion, ipy | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ọkwa | Ngwọta A, 1401/4F | Ngwọta B, 1201/4F | ||||||
| 2205 | 3.1 | 3.9 | ||||||
| 316L | >200 | >200 | ||||||
| 904L | 47 | 6.3 | ||||||
| Ihe mejupụtara, wt% | ||||||||
| P2O5 | HCl | HF | H2SO4 | Fe2O3 | Al203 | SiO2 | CaO | MgO |
| Sol A 54.0 | 0.06 | 1.1 | 4.1 | 0.27 | 0.17 | 0.10 | 0.20 | 0.70 |
| Sol B 27.5 | 0.34 | 1.3 | 1.72 | 0.4 | 0.001 | 0.3 | 0.02 | - |
Nchegbu nrụrụ mgbawa mgbawa
| Na-esi esi | Wick | Na-esi esi | |
|---|---|---|---|
| Ọkwa | 42% mgCl2 | Nwalee | 25% NaCl |
| 2205 | F | P | P |
| 254 SMO® | F | P | P |
| Ụdị 316L | F | F | F |
| Ụdị 317L | F | F | F |
| Alloy 904L | F | P ma ọ bụ F | P ma ọ bụ F |
| Alloy 20 | F | P | P |
(P = ngafe, F = ọdịda)
Nyocha kemịkalụ
Ọnụ ahịa ahụkarị (ibu %)
| Carbon | Chromium | Nickel | Molybdenum | Nitrogen | Ndị ọzọ |
|---|---|---|---|---|---|
| 0.020 | 22.1 | 5.6 | 3.1 | 0.18 | S=0.001 |
| PREN = [Cr%] = 3.3 [Mo%] = 16 [N%] ≥ 34 | |||||
Ihe eji arụ ọrụ
Ngwongwo arụrụ arụ na okpomọkụ ụlọ
| ASTM A240 | Ụdị | |
|---|---|---|
| Mpụta Ike 0.2%, ksi | 65 min. | 74 |
| Ike tensile, ksi | 90 min. | 105 |
| Mgbatị, % | 25 min. | 30 |
| Isi ike RC | 32 max. | 19 |
Ngwongwo tensile na okpomọkụ dị elu
| Okpomọkụ °F | 122 | 212 | 392 | 572 |
|---|---|---|---|---|
| Mpụta Ike 0.2%, ksi | 60 | 52 | 45 | 41 |
| Ike tensile, ksi | 96 | 90 | 83 | 81 |
Njirimara anụ ahụ
| Okpomọkụ °F | 68 | 212 | 392 | 572 | |
|---|---|---|---|---|---|
| Njupụta | lb/n'ime 3 | 0,278 | - | - | - |
| Modul nke Elasticity | psi x 106 | 27.6 | 26.1 | 25.4 | 24.9 |
| Mgbasawanye ahịrị (68°FT) | 10-6/°F | - | 7.5 | 7.8 | 8.1 |
| Nrụpụta okpomọkụ | Btu/h ft°F | 8.7 | 9.2 | 9.8 | 10.4 |
| Ike ikpo ọkụ | Btu/lb ft°F | 0.112 | 0.119 | 0.127 | 0.134 |
| Eletriki Resistivity | Ωn x 10-6 | 33.5 | 35.4 | 37.4 | 39.4 |
Oge nzipu: Jul-18-2023