EN 10295:2002 yɛ mfiridwuma gyinapɛn a ɛfa ɔhyew ho-ɛko tia dade a wɔde yɛ adwuma a Europa ahyehyɛde no hyehyɛ ma gyinapɛn (CEN), a ɛkyerɛ nneɛma a wɔhwehwɛ, nnuru a wɔde yɛ adwuma, mfiridwuma mu nneɛma, akwan a wɔfa so sɔ hwɛ ne nneɛma a wɔde di dwuma a wɔde di dwuma wɔ ɔhyew mu{3}}ɛko tia dade a wɔde yɛ nneɛma. Gyinapɛn no mu nsɛm titiriw no nkyerɛase ni:
1. Ɔkwan a wɔfa so de gyinapɛn no di dwuma .
EN 10295:2002 fata ma ɔhyew a ɛko tia dade castings a wɔde di dwuma wɔ ɔhyew kɛse tebea mu, saa castings taa di dwuma wɔ mfiridwuma fononoo, ɔhyew mfiri, gas turbine, aero engine ne afoforo mfuw, hwehwɛ yiye a ɛkorɔn ɔhyew oxidation resistance ne ɔhyew a ɛkorɔn ahoɔden.
2. Nneɛma a wɔhwehwɛ .
-Nnwom a ɛwɔ mu: Gyinapɛn no kyerɛ nnuru a ɛwɔ ɔhyew mu-aduru a ɛko tia dade, a nneɛma atitiriw te sɛ carbon (C), silicon (SI), manganese (MN), phosphorus (P), sulfur (S), ne nneɛma a ɛwɔ mu a ɛwɔ nneɛma a wɔde afra te sɛ chromium (CR) ne nickel (NI) ka ho. Saa nneɛma yi fã no nya-temperature oxidation resistance ne mfiri su a ɛwɔ casting no so no so nkɛntɛnso tẽẽ.
-Role of alloy element: Chromium ne ade titiriw a wɔde afra, a wɔde di dwuma ma dade a ɛyɛ hyew a ɛkɔ soro a ɛko tia dade no tu mpɔn; Silicon ne aluminium sɛ nneɛma a ɛboa, betumi ama oxide no agyina pintinn, nanso ɛboro so bɛma mfiridwuma mu nneɛma no so atew.
3. Mfiridwuma mu nneɛma .
-Ahoɔden a ɛkorɔn ahoɔden: Ɔhyew-ɛsɛ sɛ dade a wɔko tia no kɔ so yɛ ahoɔden a ɛkɔ soro na ɛma ahoɔden wɔ ɔhyew a ɛkorɔn mu na ama wɔatumi asoa wɔn tumi wɔ ɔhyew tebea a ɛkorɔn mu.
-Engation ne impact toughness: Gyinapɛn no nso kyerɛ elongation ne impact toughness indicators a ɛbɛma wɔahwɛ sɛ wɔn plasticity ne impact resistance wɔ ɔhyew a ɛkorɔn mu.
4. Ɔkwan a wɔfa so hu ade .
-Ultrasonic detection: Esiane sɛ aburow a ɛyɛ mmerɛw ne nnyigyei a ɛnyɛ papa a ɛwɔ casting no mu nti, ultrasonic detection ne ɔkwan titiriw a wɔfa so hu sintɔ ahorow a ɛwɔ mu. Ɛdenam reflection of the high-frequency sound beam a ɛwɔ casting no mu no, wobetumi ahu sintɔ ahorow a ɛtaa ba te sɛ mframa tokuru, shrinkage hole ne anhwea aniwa.
-Ade a ɛtaa ba ne nea ɛde ba: Gyinapɛn no nso kyerɛ sintɔ ahorow a ɛtaa ba wɔ castings (te sɛ stoma, anhwea tokuru, shrinkage hole, ne nea ɛkeka ho) ne nea ɛde ba, a ɛma wonya nkyerɛkyerɛmu ma quality control.
5. Application field .
EN 10295:2002 Standard Heat-wɔde dade a wɔko tia no di dwuma kɛse wɔ nnwuma a edidi so yi mu:
-Mfiridwuma mu fononoo: te sɛ fononoo fam, ɔhyew afã horow, ne nea ɛkeka ho, a ɛhwehwɛ sɛ ɔhyew a ɛkɔ soro a ɛko tia ne oxidation a ɛko tia.
-Ahoɔden mfiri: te sɛ gas turbine, aero-engine, ne nea ɛkeka ho, a ɛhwehwɛ sɛ ɔhyew a ɛkorɔn ne nsɛe a ɛko tia.
-Afoforo a ɛwɔ ɔhyew a ɛkorɔn mu: te sɛ anyinam ahoɔden adwumayɛbea, nnuru nnwinnade, ne nea ɛkeka ho.
6. Fekubɔ a ɛne gyinapɛn afoforo no wɔ .
EN 10295:2002 yɛ gyinapɛn a ɛho hia wɔ ɔhyew mu-wɔn a wɔko tia dade, a ɛne Europa gyinapɛn afoforo (te sɛ EN 10025 dade gyinapɛn ahorow) bom yɛ Europa dade gyinapɛn nhyehyɛe.
