Tebulu ọdịnaya
2. Mmetụta nke elu okpomọkụ na n'ibu Njirimara nke 304 igwe anaghị agba nchara handwheel
(1.) Ndabere okpomọkụ nke ike nkwụsị na ike na-enye ike
(2.) Mmetụta mma agha ihu okpukpu abụọ{1} nke ductility na ike
(3.) ike ọgwụgwụ ike attenuation na ọdịda ihe ize ndụ
3. Mgbanwe na nkwụsi ike nke kemịkalụ: ihe ịma aka superposition nke corrosion na oxidation
4. Nyocha ikpe a na-ahụkarị: Ịrụ ọrụ na ọnọdụ mmepụta ihe
(1.) Akwa okpomọkụ mkpughe nke chemical reactor na-arụ ọrụ handwheel
(2).
6. Atụmatụ nzaghachi ụlọ ọrụ na ntinye nhọrọ
7. Ọdịnihu na-eme n'ọdịnihu: Ohere nke nkwalite ihe na usoro ihe ọhụrụ
1. Nyocha nke mmekọrịta n'etiti 304 igwe anaghị agba nchara ihe onwunwe na elu okpomọkụ gburugburu ebe obibi
Dị ka onye nnọchianya nke austenitic igwe anaghị agba nchara (18% chromium, 8% nickel),304 igwe anaghị agba ncharanwere nguzogide corrosion, ductility na nhazi nhazi n'ime ụlọ okpomọkụ, na-eme ka ọ bụrụ ihe kachasị amasị maka ịmepụta aka aka. Otú ọ dị, arụrụ ọrụ okpomọkụ ya dị elu{1} na-amachibidoro site na njirimara nke nhazi kristal:
Oke nnabata okpomọkụ:
Okpomọkụ dị n'okpuru ọnọdụ ọrụ nkịtị bụ -196 ogo 600, mana arụmọrụ ihe na-amalite ịdaba nke ukwuu mgbe ọ gafere ogo 400 (dị ka data ule ụlọ ọrụ siri dị na 2024).
Nhazi kristal na-agbanwe:
Ihu - Ọdịdị cubic gbadoro ụkwụ na-adịkarị mfe na oke oke ọka na-amịgharị na oke okpomọkụ, na-eme ka ihe ahụ dị nro; mgbe okpomọkụ gafere ogo 500, a na-eme ka mmiri ozuzo carbide dịkwuo elu, na-eme ka mmụba na-enwe mmetụta corrosion intergranular.
2. Mmetụta nke elu okpomọkụ na n'ibu Njirimara nke 304 igwe anaghị agba nchara handwheel
(1.) Ndabere okpomọkụ nke ike nkwụsị na ike na-enye ike
Ike ire ere: Ike ike bụ 515MPa na okpomọkụ ụlọ, na-adaba na 400MPa na ogo 300, na naanị 300MPa na ogo 500 (isi iyi data: 2024 Metal Hose Research).
Mbelata ike mkpụrụ na mberede: ike mkpụrụ na ụlọ okpomọkụ bụ 205MPa, na-adaba ngwa ngwa ruo 120MPa na ogo 500, nke pụtara na wheel wheel na-adịkarị mfe na nrụrụ rọba na okpomọkụ dị elu, nke nwere ike ime ka ọkụ na-arụ ọrụ kwụsị ịchịkwa.
(2.) Mmetụta mma agha ihu okpukpu abụọ{1} nke ductility na ike siri ike
N'oge mmalite nke okpomọkụ dị elu (300 degrees - 450 degrees ), mmelite nke ductility ihe na-eme ka ọ ghara ịdị na-ebelata nchekasị; mana mgbe ihe karịrị ogo 600 gachara, ebelata oke oke ọka na-eduga na mkpọda dị ka okwute siri ike, na wheel wheel nwere ike gbajie n'okpuru ibu mberede.
(3.) ike ọgwụgwụ ike attenuation na ọdịda ihe ize ndụ
Mbelata nrụgide nrụgide cyclic: Na ogo 500, ike ike ọgwụgwụ bụ naanị 40% -50% nke uru na ụlọ okpomọkụ. Imeghe na mmechi nke wheel wheel ugboro ugboro na-ebute ihe ize ndụ nke mgbasawanye microcrack.
Thermomechanical ike ọgwụgwụ (TMF): Ọdịiche mgbasawanye nke okpomọkụ kpatara site na mgbanwe mgbanwe okpomọkụ (linear expansion coefficient 17.3 × 10⁻⁶ / ogo) ga-eme ka nrụgide corrosion na-agbawa ngwa ngwa na njikọ ahụ.
3. Mgbanwe na nkwụsi ike nke kemịkalụ: ihe ịma aka superposition nke corrosion na oxidation
Nhazi ọnụ ọgụgụ oxide:
N'elu 600 degrees, elu Cr₂O₃ ihe nkiri nchebe na-agbajikwa akụkụ, FeO/Fe₃O₄ ngwakọta oxide oyi akwa na-eto eto, na handwheel akụkụ ziri ezi na-emebi.
Sulfide corrosion:
na sọlfọ{{0}nwere mgbasa ozi okpomọkụ dị elu{1}} (dị ka gburugburu ebe a na-anụcha ihe), nickel na-eji sọlfọ emeghachi omume iji mepụta obere oge eutectic{2} na-agbaze{3}, nke na-eme ka corrosion intergranular dịkwuo elu.
Mpaghara mmetụta chloride ion:
mgbe okpomọkụ gafere ogo 60, chloride ion corrosion threshold na-adaba nke ọma, na wheel wheel na mpaghara osimiri ma ọ bụ osisi kemịkal chọrọ nchebe ọzọ.
4. Nyocha ikpe a na-ahụkarị: Ịrụ ọrụ na ọnọdụ mmepụta ihe
(1.) Mkpughe okpomọkụ dị elu nke wheel handwheel na-arụ ọrụ nke ihe nrụpụta kemịkalụ
The handwheel nke kemịkalụ osisi reactor (na-arụ ọrụ okpomọkụ 480 degrees) nwere nsogbu ndị a mgbe ọ na-aga n'ihu na-arụ ọrụ ruo ọnwa 6:
Ọdịda nnyefe nke Torque: Mbelata nke ike mkpụrụ kpatara nrụrụ na-akpụ akpụ na njikọ dị n'etiti wiilịlụ aka na valvụ ahụ, yana mkpagharị arụ ọrụ kwesịrị ịbawanye site na 30% iji nweta nsonaazụ mbụ.
Mgbawa dị n'elu: A na-ewepụ oyi akwa oxide n'okpuru ọrụ nke ịgba ígwè na-ekpo ọkụ, na ihe mgbakwasị ụkwụ na-ekpughere ngwa ngwa corrosion, na oge nhazi na-ebelata site na ọkara afọ ruo ọnwa abụọ.
Ngwọta: Jiri S34700 (nwere Nb stabilizing element) igwe anaghị agba nchara ma tọọ oke okpomọkụ nke arụ ọrụ na ogo 450.
(2). Ogologo oge - ibu ọkụ nke valvụ njikwa aka nke ụlọ ọrụ ọkụ
Mgbe ejiri aka wheel valvụ uzuoku nke otu ihe dị oke egwu na gburugburu ogo 520 maka ọnwa 18:
Mbelata microstructure: Nnyocha SEM gosiri na nha ọka na-abawanye site na 50%, na mmiri ozuzo nke oge σ kpatara mbelata nke ike.
Ihe mberede mgbawa ike ọgwụgwụ: Mgbe 5,000 mmeghe na oge mmechi gasịrị, ike ọgwụgwụ gbasaa na mpaghara a na-ekwu okwu, na-akpata ihe mberede nkwụsị.
Usoro nkwalite: Webata teknụzụ na-eme ka ihe na-eme ka ọ bụrụ ihe na-eme ka Cr{{0}Nb na-agba ume na nrụgide ahụ{1}, na-agbatị ndụ ọrụ ruo afọ 3.
5. Ọmụmụ ihe atụnyere: Esemokwu dị n'etiti igwe anaghị agba nchara 304 na elu{2} okpomọkụ na-eguzogide alloys
| Ngosipụta arụmọrụ | 304 igwe anaghị agba nchara (500 degrees) | 316L igwe anaghị agba nchara (500 degrees) | Inconel 625 (ogo 800) |
| Ike tensile (MPa) | 300 | 350 | 750 |
| Ike mpụta (MPa) | 120 | 150 | 550 |
| Uru Oxidation (mg/cm²) | 15 (1000 awa) | 12 (1000 awa) | 3 (1000 awa) |
6. Atụmatụ nzaghachi ụlọ ọrụ na ntinye nhọrọ
● Njikwa nhazi ọkwa okpomọkụ:
Ọkwa I (ihe na-erughị ma ọ bụ haha na ogo 400):Aka igwe anaghị agba nchara Maka Globe Valveenwere ike ịga n'ihu na-eji ya, mana a chọrọ ọgwụgwọ passivation elu.
Ọkwa II (400 degrees -550 degrees): A na-atụ aro ka ịkwalite 316L ma ọ bụ Nb-stabilized steel (dị ka 347 igwe anaghị agba nchara).
Ọkwa III (：550 degrees): Nickel{1}} alloys dabere ma ọ bụ ihe mejupụtara seramiiki ga-ejirịrị.
● Ntuziaka kachasị mma:
Na-abawanye ihe nchekwa: Ihe nchekwa nchekwa n'okpuru ọnọdụ okpomọkụ dị elu kwesịrị ịbawanye site na 2.5 emebere na okpomọkụ nkịtị ruo 3.0-3.5.
Ọdịdị dịpụrụ adịpụ okpomọkụ: Tinye akwa mkpuchi eriri seramiiki iji belata okpomọkụ nke ahụ wheel wheel.
●Mmelite usoro mmezi:
Webata nlebanya ihe onyonyo ọkụ infrared iji nyochaa nkesa okpomọkụ nke wheel wheel ozugbo ozugbo.
Mepụta usoro amụma ndụ dabere na nrụgide{0}}ụkpụrụ njiko okpomọkụ.
7. Ọdịnihu na-eme n'ọdịnihu: Ohere nke nkwalite ihe na usoro ihe ọhụrụ
Nkwalite ngwa gradient: A na-eji teknụzụ mbipụta 3D iji nweta nchikota gradient na-arụ ọrụ nke isi handwheel (elu{1}}nchara ike) na elu (mgbochi-oxidation alloy).
Njikọ nghọta ọgụgụ isi: Ihe mmetụta fiber optic agbakwunyere na-enyocha eriri aka aka na ọnọdụ ọnọdụ okpomọkụ na-agbanwe ozugbo.
Ọganihu teknụzụ mgbanwe ihu: ọgwụgwọ Plasma chromizing nwere ike ịbawanye ike elu ruo HV1200 wee bulie elu{1}} okpomoku na-eguzogide ọgwụ ugboro atọ.
Mmechi
Ka ụlọ ọrụ mmepụta ihe na-etolite n'ebe okpomọkụ dị elu na nrụgide dị elu, oke arụmọrụ nke304 igwe anaghị agba ncharaụkwụ aka na-eche ule siri ike ihu. Ụlọ ọrụ ahụ kwesịrị iwulite ihe ngwọta nke agbụ zuru ezu{{1} site na nhọpụta ihe, njikarịcha imewe ruo ịrụ ọrụ nwere ọgụgụ isi na mmezi iji chọta nguzozi n'etiti arụmọrụ na nchekwa. Na 2025, teknụzụ ọhụrụ nke ejima dijitalụ nọchiri anya yana nrụpụta dị elu nwere ike imepe ohere ọhụrụ maka itinye ihe a kpochapụrụ.
