Grinding yɛ ɔkwan a wɔtaa fa so wie valve ahorow no ani wɔ ne yɛ mu. Grinding betumi ama valve sealing surface no anya dimensional accuracy a ɛkorɔn, geometric shape roughness ne surface roughness, nanso entumi mma mutual position pɛpɛɛpɛ a ɛda surfaces a ɛwɔ sealing surface no ntam no ntu mpɔn. Nsusuwii pɛpɛɛpɛ a asase valve nsɔano soro taa yɛ 0.001 ~ 0.003mm; geometric nsusuwii pɛpɛɛpɛ (te sɛ nea ɛnsɛ) yɛ 0.001mm; na soro roughness yɛ 0.1 ~ 0.008.
Nnyinasosɛm titiriw a ɛfa sealing surface grinding ho no bi ne afã anum: grinding nhyehyɛe, grinding movement, grinding ahoɔhare, grinding pressure ne grinding allowance.
1. 1. Nnipa a wɔte saa. Grinding nhyehyɛe
Adwinnade a wɔde twitwiw nneɛma ne nkatabo a wɔde twitwiw nneɛma no ani a wɔaka abom yiye, na adwinnade a wɔde twitwiw nneɛma no yɛ nneɛma a ɛyɛ den a wɔde twitwiw nneɛma wɔ nkwaa no ani. Wɔde abrasives gu lapping adwinnade no ne sealing ring no ani ntam. Sɛ lapping adwinnade no ne sealing ring no ani tu sɛ wɔde toto wɔn ho wɔn ho ho a, abrasive grains a ɛwɔ abrasive no mu no fã bi bɛtwetwe anaasɛ ɛbɛbɔ wɔ lapping adwinnade no ne sealing ring no ani ntam. dade a wɔde ayɛ ade. Wodi kan twitwa mmepɔw a ɛwɔ nsɔano ring no ani no kɔ, na afei wɔde nkakrankakra nya geometry a wɔhwehwɛ no.
Ɛnyɛ mfiri a wɔde twitwiw dade so nko, na mmom ɛyɛ nnuru a wɔde twitwiw nneɛma nso. Srade a ɛwɔ abrasive no mu no betumi ayɛ oxide film wɔ ɔfasu a ɛsɛ sɛ wɔyɛ ho adwuma no so, na ɛnam so ma wɔyam no ntɛmntɛm.
2 . grinding movement
Sɛ adwinnade a wɔde twitwiw nneɛma ne nkatabo no ani tu sɛ wɔde toto wɔn ho wɔn ho ho a, ɛsɛ sɛ akwan a wɔfa so twetwe ade a ɛfa baabiara a ɛwɔ nsɔano ring no ani kɔ adwinnade a wɔde twitwiw ade no so no nyinaa yɛ pɛ. Afei nso, ɛsɛ sɛ ɔkwan a wɔfa so kankyee no sesa bere nyinaa. Nsakrae a ɛkɔ so bere nyinaa no mma aburow biara a ɛyɛ abrannaa no ntumi nsan nkɔ n’ankasa kwan so wɔ nsɔano nkaa no ani, sɛnea ɛbɛyɛ a ɛremma nsɔano agyiraehyɛde a ɛda adi pefee mma na ɛremma nsɔano nkaa no ani nkɔ soro. Afei nso, nsakrae a ɛkɔ so wɔ ɔkwan a ɛkɔ so no mu no ntumi mma abrasive no nkyekyɛ pɛpɛɛpɛ, ma enti wobetumi atwitwa dade a ɛwɔ nsɔano ring no ani no pɛpɛɛpɛ.
Ɛwom sɛ sɛnea wɔyam no yɛ den na ɔkwan a wɔfa so yɛ no sesa kɛse de, nanso bere nyinaa wɔyɛ nea wɔde twitwiw no wɔ adwinnade a wɔde twitwiw nneɛma no ani ne nkatabo a wɔde hyɛ mu no ani. Sɛ́ ɛyɛ nsaano a wɔde yam anaa mfiri a wɔde yam ade no, geometric nsusuwii a ɛyɛ pɛpɛɛpɛ a ɛwɔ sealing ring no ani no nya nkɛntɛnso titiriw ne geometric nsusuwii a ɛyɛ pɛpɛɛpɛ a ɛwɔ adwinnade a wɔde twitwiw ade no mu ne sɛnea wɔde twitwiw no no.
3. ahoɔhare a wɔde twitwiw nneɛma
Dodow a wɔyam no ntɛmntɛm no, dodow no ara na nea wɔyam no yɛ adwuma yiye. Ahoɔhare a wɔde yam ade no yɛ ntɛmntɛm, nneɛma nketenkete a ɛyɛ abrasive pii fa adwuma no ani wɔ bere biara mu, na wotwa dade pii.
Ahoɔhare a wɔde twitwiw no taa yɛ 10 ~ 240m/min. Wɔ adwumayɛ nneɛma a ɛhwehwɛ sɛ wɔyɛ pɛpɛɛpɛ a ɛkorɔn a wɔde twitwiw nneɛma ho no, mpɛn pii no, ahoɔhare a wɔde yam no ntra 30m/min. Ahoɔhare a wɔde twitwiw valve no nsɔano no ne nneɛma a wɔde nsɔano no wɔ abusuabɔ. Ahoɔhare a wɔde twitwiw kɔbere ne dade a wɔagu no nsɔano no ani yɛ 10 ~ 45m/min; nsɔano ani a ɛyɛ den dade ne den alloy yɛ 25 ~ 80m / simma; na nsɔano ani a austenitic dade a ɛnyɛ den 10 ~ 25m / simma.
4. nhyɛso a wɔde twitwiw nneɛma
Nneɛma a wɔde twitwiw no yiye no kɔ soro bere a nhyɛso a wɔde yam no kɔ soro no, na ɛnsɛ sɛ nhyɛso a wɔde yam no yɛ kɛse dodo, mpɛn pii no ɛyɛ 0.01-0.4MPa.
Sɛ woyam dade a wɔatow, kɔbere ne austenitic dade a ɛnyɛ den a wɔde nsɔano no ani a, nhyɛso a wɔde yam no yɛ 0.1 ~ 0.3MPa; nsɔano ani a ɛyɛ den dade ne den alloy yɛ 0.15 ~ 0.4MPa. Fa bo kɛse ma rough grinding ne bo ketewaa bi ma fine grinding.
5. Grinding allowance a wɔde ma
Esiane sɛ wɔyam yɛ ade a wɔde wie nti, nea wotwitwa no sua koraa. Grinding allowance no kɛse gyina machining pɛpɛɛpɛ ne surface roughness a ɛwɔ kan adeyɛ no so. Wɔ adwene a ɛne sɛ wɔbɛhwɛ sɛ wobeyi adeyɛ no ho nsɛnkyerɛnne a ɛwɔ adeyɛ a atwam no mu afi hɔ na wɔasiesie geometric mfomso a ɛwɔ nsɔano ring no mu no, dodow a grinding allowance no sua no, dodow no ara na eye.
Mpɛn pii no, ɛsɛ sɛ wɔyam ade a wɔde kata so no yiye ansa na wɔayam. Afei fine grinding, sealing soro betumi tẽẽ lapped, na minimum grinding allowance ne: diameter allowance yɛ 0.008 ~ 0.020mm; wimhyɛn a wɔde ma no yɛ 0.006 ~ 0.015mm. Fa bo ketewaa bi bere a nsaano a wɔde yam anaa nneɛma a ɛyɛ den no dɔɔso, na fa bo kɛse bere a mfiri a wɔde yam anaa nneɛma a ɛyɛ den no sua no.
Valve nipadua no ani a ɛkata so no nyɛ mmerɛw sɛ wɔbɛyam na wɔayɛ ho adwuma, enti wobetumi de dannan no yiye adi dwuma. Afei wie dannan, ɛsɛ sɛ sealing soro yɛ rough asase ansa na awie, na wimhyɛn allowance yɛ 0.012 ~ 0.050mm.
Tianjin tanggu nsu-nsɔano valve Co.,ltd na specilized wɔ adwinnan muntontom valve a ɔte ase a ɛtumi gyina ano, apon ano valve, Y-a wɔde hyɛ mu, valve a ɛkari pɛ, wafer check valve a wɔde hwɛ nneɛma so, ne ade.
Bere a wɔde bɛkyerɛw: Jun-25-2023
