Wɔ nnɛyi tumi a wɔyɛ mu no, wɔde dade a ɛko tia ɔhyew-ɛko tia ade titiriw sɛ ade titiriw wɔ nneɛma atitiriw te sɛ boilers, turbines ne high-temperature pipelines mu. Ne sorokɔ a ɛkorɔn-temperature ahoɔden, oxidation resistance ne creep resistance tẽẽ nya ahobammɔ ne sikasɛm a ɛwɔ tumi afifide. Sɛ wobehu ɔhyew a wɔde di dwuma yiye-aduru a ɛko tia no yiye a, ɛnyɛ sɛ ebetumi ama nnwinnade nkwa nna akɔ anim nko, na mmom ɛbɛma adwumayɛ mu mmɔdenbɔ atu mpɔn nso.
Nneɛma a wɔpaw ne nea ɛne no hyia ne nnyinaso .
Ɔhyew ahorow pii wɔ hɔ-senthost steel, na alloy compositions ahorow no fata ma ɔhyew ahorow ahorow. Sɛ nhwɛso no, ɛba fam-Alloy ɔhyew-dadeɛ a ɛko tia (te sɛ 12cr1mov) fata ma medium-temperature environments, bere a ɛkorɔn-alloy steel (te sɛ TP347H) na wɔde di dwuma wɔ high-temperature fã a ɛwɔ supercritical units no mu. Sɛ worepaw nneɛma a, ɛho hia sɛ wode ɔhyew a ɛyɛ adwuma, nhyɛso ne mfinimfini su ahorow no hyia pɛpɛɛpɛ na woakwati huammɔdi a ɛba ntɛm esiane nneɛma a ɛnyɛ adwuma yiye nti.
Welding nhyehyɛe no kyerɛ ahotoso .
Sɛ welding heat-ɛko tia dade a, ɛsɛ sɛ wɔde adwene titiriw si ɔhyew a ɛyɛ adwuma no sohwɛ so-afɛfɛde no so. Hydrogen welding abaa a ɛba fam-a wɔde di dwuma, interlayer temperature a wɔhwɛ so, ne post-weld ɔhyew ayaresa no betumi atew welding adwennwen ne crack asiane ahorow so yiye. Sɛnea ɛbɛyɛ a welding a ɛsono dade no, ɛsɛ sɛ wɔpaw transition layer welding nneɛma na ama wɔakwati embrittlement a ɛnam component diffusion so de ba.
Nsɛm titiriw a ɛfa adwumayɛ ne nsiesie ho .
Wɔ bere tenten-Terɛw High-Ɔhyew adwumayɛ mu no, ɔhyew-dadeɛ a ɛko tia no taa yɛ oxidation, sulfidation corrosion ne creep damage. Hwɛ sɛnea tube no fasu no mu yɛ duru daa, hwɛ sɛnea creep deformation no yɛ mmerɛw, na hwɛ asiane a ɛwɔ oxide scale peeling mu no yiye. Sɛ woretoto mu ma wɔasiesie a, fa nnuru a wɔde tew nneɛma a ɛwɔ alkaline ho no fi hɔ na ama woakwati chloride ions a aka a ɛma nsɛe no yɛ kɛse no.
Ayaresa a ɛwɔ soro a wɔde bɛtrɛw nkwa mu .
Mfiridwuma te sɛ shot peening, aluminizing anaa ceramic coatings a wɔde di dwuma no betumi ama-temperature oxidation resistance a ɛwɔ ɔhyew-ɛko tia dade a ɛkorɔn no atu mpɔn kɛse. Titiriw ma convection ɔhyew ani no, aduru a wɔde yɛ no no betumi atew mfutuma a ɛboaboa ano ne nea ɛbɛsɛe no so na ama mpɛn dodow a wɔhwɛ so no so atew.
Nsɛnnennen foforo a ɛwɔ nneɛma a atwa yɛn ho ahyia ho banbɔ mu .
Ultra-a ɛba fam no, ɛsɛ sɛ ɔhyew-dadeɛ a ɛko tia no yɛ adwuma ma ɛne sulfur pɛtro a ɛkɔ soro ne mframa a ɛwɔ afiri mu a ɛyɛ den no hyia. Nhwehwɛmu ne nkɔsoɔ a ɛba wɔ ɔhyew-wɔn a ɛko tia a ɛwɔ asase mu nneɛma a ɛntaa nsi mu no abɛyɛ asɛm a ɛyɛ hyew, na ne corrosion resistance no akɔ soro bɛboro 30%, abɛyɛ daakye upgrade akwankyerɛ.
Saa akwan yi a wobetumi ayɛ no yiye no ntumi mma mfiri a wɔde yɛ anyinam ahoɔden a wɔde di dwuma mfiase no ne nea wɔde si hɔ mfiase no yɛ papa nko, na mmom ɛbɛtew ɛka a wɔbɔ wɔ nneɛma a wɔde si ananmu ho no so kɛse denam nyansahu mu nsiesie so. Ɛnam nneɛma a wɔde yɛ mfiridwuma anya nkɔso so no, wɔbɛyi ɔhyew a ɛwɔ ɔhyew mu-aduru a ɛko tia no adi bio, na ɛbɛma wɔanya ahotoso a ɛyɛ den ama anyinam ahoɔden a wɔde yɛ adwuma yiye na ɛho tew.
