Valve sealing material yɛ ade titiriw wɔ valve sealing mu. Dɛn ne nneɛma a wɔde hyɛ valve no mu? Yenim sɛ wɔakyekyɛ valve sealing ring nneɛma mu abien: dade ne nea ɛnyɛ dade. Nea edidi so yi yɛ nnianim asɛm tiawa a ɛfa tebea horow a wɔde di dwuma wɔ nneɛma ahorow a wɔde hyɛ mu, ne valve ahorow a wɔtaa de di dwuma ho.
1. Rɔba a wɔde ayɛ nneɛma
Nneɛma a ɛkɔ akyiri a ɛwɔ rɔba a wɔayɛ mu te sɛ ngo a ɛko tia, ɔhyew a ɛko tia ne nea ɛko tia nsɛe no ye sen abɔde mu rɔba. Mpɛn pii no, ɔhyew a wɔde di dwuma wɔ rɔba a wɔayɛ no mu yɛ t≤150°C, na ɔhyew a ɛwɔ abɔde mu rɔba mu yɛ t≤60°C.Wɔde rɔba di dwuma de siw globe valve ahorow ano,rɔba a wɔde te apon ano valve, diaphragm valve ahorow, .ruber a ɔte ntontom valve, ruber te ase swing check valve (check valve ahorow a wɔde hwɛ nneɛma so), pinch valves ne valve afoforo a ɛwɔ din nhyɛso PN≤1MPa.
2. Nylon a wɔde yɛ adwuma
Nylon wɔ su ahorow a ɛyɛ friction coefficient ketewaa ne corrosion resistance pa. Wɔde nylon di dwuma kɛse ma bɔɔl valve ne globe valve a ɛwɔ ɔhyew t≤90°C ne nominal pressure PN≤32MPa.
3. PTFE a ɛwɔ hɔ
PTFE yɛ nea wɔde di dwuma kɛse ma globe valves, .apon ano valve ahorow, bɔɔl valve, ne nea ɛkeka ho a ɔhyew t≤232°C ne nhyɛso a wɔfrɛ no PN≤6.4MPa.
4. Dade a wɔde gu mu
Wɔde dade a wɔde agugu di dwuma maapon ano valve, globe valve, plug valve, ne nea ɛkeka ho ma ɔhyew t≤100°C, din nhyɛso PN≤1.6MPa, gas ne ngo.
5. Babbitt aduru a wɔde yɛ nneɛma
Babbitt aduru a wɔde yɛ ammonia globe valve a ɔhyew t-70 ~ 150 ° C ne din nhyɛso PN ≤ 2.5MPa.
6. Kɔbere a wɔde afrafra
Nneɛma a wɔtaa de yɛ kɔbere a wɔde afra ne kɔbere 6-6-3 tin ne 58-2-2 manganese kɔbere. Kɔbere a wɔde afrafra no wɔ wear resistance pa na ɛfata ma nsu ne steam a ɔhyew t≤200°C ne nominal pressure PN≤1.6MPa. Wɔtaa de di dwuma wɔapon ano valve ahorow, globe valve ahorow, .check valve ahorow a wɔde hwɛ nneɛma so, plug valves, ne nea ɛkeka ho.
7. Chrome dade a ɛnyɛ den
Chromium dade a ɛnyɛ den a wɔtaa de di dwuma ne 2Cr13 ne 3Cr13, a wɔadum na wɔayɛ no hyew, na ɛwɔ ahoɔden a ɛko tia nsɛe yiye. Wɔtaa de di dwuma wɔ valves ma media te sɛ nsu, steam ne petroleum a ɔhyew t≤450°C ne nominal pressure PN≤32MPa.
8. Chromium-nickel-titanium dade a ɛnyɛ den
Chromium-nickel-titanium stainless steel a wɔtaa de di dwuma ne 1Cr18Ni9ti, a ɛwɔ ahoɔden pa a ɛko tia nsɛe, ɛko tia nsuo a ɛtɔ ne ɔhyew a ɛko tia. Ɛfata ma steam, nitric acid ne nsɛm afoforo a ɛwɔ ɔhyew t≤600°C ne nominal pressure PN≤6.4MPa, a wɔde di dwuma ma globe valve, ball valve, ne nea ɛkeka ho.
9. Dade a wɔde nitride ayɛ
Nitrided dadeɛ a wɔtaa de di dwuma ne 38CrMoAlA, a ɛwɔ ahoɔden pa a ɛko tia nsɛeɛ ne scratch resistance wɔ carburizing ayaresa akyi. Wɔtaa de di dwuma wɔ tumi adwumayɛbea pon valve a ɔhyew t≤540°C ne din nhyɛso PN≤10MPa.
10. Boronizing a wɔde yɛ adwuma
Boronizing tẽẽ di nsɔano no ani fi nneɛma a ɛwɔ valve nipadua anaa disc nipadua no mu, na afei ɛyɛ boronizing soro ayaresa, nsɔano no wɔ ɔporɔw a ɛko tia yiye. Wɔde di dwuma wɔ anyinam ahoɔden adwumayɛbea blowdown valve.
Bere a wɔde bɛkyerɛw: Jun-10-2022
