Mmebi Porosity na ihe eji etinye ego na igwe anaghị agba nchara

Porosity ka bụ otu n'ime ntụpọ kachasị njọ ma dị oke ọnụ na ígwè anaghị agba nchara Ntinye egos, nke na-ebute nnukwu mkpofu ihe na enweghị ike imepụta ihe. Dịka onye injinia ígwè nwere ahụmịhe dị ukwuu n'ịrụpụta ihe, ahụla m na ihe mkpofu metụtara porosity nwere ike ibute mfu karịrị akarị$78,000 kwa otu, ọkachasị n'ihe gbasara ngwa ndị dị elu dịka ihe gbasara ụgbọelu na ọgwụ.

Ihe Mere Porosity Ji Dịgide n'Ọrụ Ntinye Ego

Mgbanwe Usoro– Ụlọ ọrụ mmepụta ihe na-ebutekarị ntụpọ ndị a na-ahụ anya ụzọ, na-elepụ anya na porosity dị n'okpuru ala.

Ntinye ego akụrụngwa– Ọtụtụ ngwọta chọrọ mmefu ego na sistemụ pụrụ iche (dịka ọmụmaatụ, iwepụ ikuku ọkụ).

Àgwà Alloy Pụrụ Iche– Usoro nhazi porosity dị iche iche nke ukwuu n'etiti ígwè austenitic nke usoro 300.

1. Ngụkọta Gas: Ngụkọta Mmiri Emere Ka Haịdrojiin Kpata

Mgbọrọgwụ:Gas e tinyere n'ime mmiri (karịsịa hydrogen) n'oge ọ na-esi ike, dịka mgbanwe gas na ihe ọṅụṅụ carbonated. Nyocha ụlọ nyocha na-akwado nke ahụ ọkwa hydrogen karịrị 6 ppmnwere ike ibute obere porosity (0.1-0.3 mm voids).

Ndụmọdụ Njikwa Usoro: 

Nọgide na-enwe iru mmiri nchekwa wax n'okpuru 60% RHiji gbochie mmiri ịbanye n'ime ebu shei.

Mezue ya ihe mkpuchi argonn'oge agbaze iji belata mbufe hydrogen.

2. Mbelata Porosity: Mmetụta nke Okpomọkụ Gradient

Ọmụmụ Ihe:E gosipụtara ụlọ mgbapụta ígwè anaghị agba nchara Ọnụego mkpofu 18%n'ihi mbelata oghere dị na njikọ flange. A hụrụ onyonyo okpomọkụ ihe dị iche na 150°Cn'oge siri ike—okwu metụtara oke nkesa oke okpomọkụ na-ezighi ezi.

Mmezi Ihe: 

Mee ka mma imewe ịrị elusite na iji ihe ngosi (dịka ọmụmaatụ, MAGMASOFT®).

Tinye akwụkwọ oyi na-ekpo ọkụiji mee ka oyi dị ngwa ngwa n'ime akụkụ ndị dị oke ibu.

Mbelata Vacuum: Ọmụmụ Ihe A Na-egosi na ROI

Ụlọ ọrụ mmepụta ihe nke Midwest kọrọ ihe ndị a mmezi enwere ike ịgụta ọnụmgbe njikọta sistemụ vacuum gasịrị:

Omume Kachasị Mma:Mejuo mwepụ nke vacuum na ikuku ebu a na-achịkwa (Argon na-enwu)maka nsonaazụ ka mma.

Nhazi Sistemụ Shell maka Mbelata Porosity

Nchọpụta sitere na data sitere na nnwale gbasara itinye osisi n'ime ahụike: 

Ihe ndị e ji agwakọta mmanyabelata porosity gas nke mmiri na-akpata site na Pasentị iri anọvs. sistemu ethyl silicate.

1 w.% ntụ ọka zirconn'ime mkpuchi ihu, ọ na-ebelata ntụpọ ndị metụtara ịbanye n'ime ígwè.

Mgbanwe ụkpụrụ akpaghị akana-eme ka ọkpụrụkpụ shei ahụ dị otu (±5% nkewa).

Arụmọrụ Porosity ntụnyere site na Sistemụ Shell

Nhọrọ nke Alloy: Ntụnyere nke Metallurgical 304 vs. 316L

Nnyocha nhazi na-akwado Nguzogide dị elu nke 316L na porosityn'ihi:
✔ Molybdenum (2–3%)imeziwanye mmiri gbazee
✔ Mmiri hydrogen dị ala(0.4–0.7% megide 304L nke 0.8–1.2%)
✔ Nkesa oghere shrinkage ọzọ dị n'otu 

Nchọpụta Microstructural (Mmụba 100X):

Usoro Nchọpụta Ngwa Ngwa Maka Ndị Otu Ụlọ Ọrụ Na-ahụ Maka Nrụpụta Ihe

Ụzọ Nchọpụta Nsogbu Dị Ọnụ Ala:
☑ Nnwale Anụ Kọfị- Caffeine na-eme ka mmiri dị n'ime mmiri dịkwuo mma (na-ebelata porosity elu site na 15%).
☑ Igwe Thermografi Infrared– Na-achọpụta ihe ndị na-abụghị uniform nke shei na-ekpo ọkụ (~ $500 kwa izu mgbazinye).
☑ Ule nkeji iri na ise- Na-akwado ọnụego oyi (njikọ 92% na data thermocouple).

Ngwọta Mmerụ Ahụ Mgbe A Kwụsịrị Ihe

Ngwọta Mmezi Na-anaghị Ebibi Ihe: 

Mmerụ Ahụ Ịchọ Mma:Ịgbado obere plasma (ihe efu ≥0.3 mm) + ịgbado ọkụ eletrik

Akụkụ Nhazi:HIP (2000 psi/2200°F) ma ọ bụ sodium silicate impregnation

ỊDỌ AKA NA NTỊ:Usoro HIP na-ezighi ezi nwere ike ibelata ike ọgwụgwụ site na 15%—nyochaa njirimara igwe mgbe ọgwụgwọ gasịrị.

Usoro Arụmọrụ Dị Mkpa Mgbe Mmechara Ya

Mgbe ha tinyechara atụmatụ ndị a, ndị na-ebubata ngwaahịa Tier 1 na-akọ akụkọ:
▼ Mbelata 68% na ihe mkpofu porosity
▲ Ntinye aka dị elu karịa 22%
▼ Nlaghachi ndị ahịa pere mpe nke 45% 

Dịka onye isi ọkachamara metallurgist GE Aviation si kwuo:

"Ọnọdụ ala abụghị naanị ntụpọ - ọ bụ ihe na-egosi mgbanwe usoro sistemụ chọrọ mmezi ziri ezi."

Ime usoro ndị a ga-eme ka ụlọ ọrụ gị bụrụ ebe kacha mma itinye ego na-enweghị ntụpọ.