Wɔde graphite a wɔde kyekyere nneɛma ho, sɛ ade a ɛho hia a wɔde siw ano wɔ mfiridwuma mu no di dwuma kɛse wɔ nnwuma te sɛ nnuru, petroleum, ne anyinam ahoɔden a wɔde yɛ adwuma mu. Ne dwumadie nya nkɛntɛnsoɔ tẽẽ wɔ adwumayɛ ahobanbɔ ne dwumadie nkwa nna so. Sɛnea ɛbɛyɛ a graphite packing quality bedi gyinapɛn ahwehwɛde ahorow so no, ɛsɛ sɛ wɔsɔ hwɛ yiye denam nhyehyɛe a wɔde sɔ hwɛ nhyehyɛe so. Saa asɛm yi bɛkyerɛkyerɛ graphite packing testing process no mu kɔ akyiri, a ɛbɛkata anammɔn atitiriw te sɛ sampling, physical property testing, chemical composition analysis, ne sealing performance verification so.
1. Nhwɛsode ne nhwɛsode ahosiesie .
Anamɔn a edi kan wɔ sɔhwɛ nhyehyɛe no mu ne standardized sampling de hwɛ hu sɛ ananmusifo nhwɛso ahorow. Nea edi kan no, egyina graphite packing no a wɔde kyekyere nneɛma (sɛ nhwɛso no, rolls, blocks, anaa granules) so no, wɔkyerɛ ɔkwan a wɔfa so yɛ nhwɛsode no sɛnea gyinapɛn ahorow a ɛfa ho no kyerɛ (sɛ nhwɛso no, GB/T 18341 anaa ASTM D297). Wɔtaa paw nhwɛsode ahorow no kwa fi akuw ahorow anaa mmeae ahorow mu de siw mpɔtam hɔ su ahorow ano sɛ ɛbɛka nea efi mu ba nyinaa. Sɛ wɔfa nhwɛsodeɛ wie a, ɛsɛ sɛ wɔde nhwɛsoɔ sie wɔ baabi a ɛhɔ yɛ kusuu na amma nsuo a ɛwɔ mu no atumi akɔ mu na ayɛ fĩ.
Wɔyɛ nhwɛsode ahosiesie a edi hɔ, a nea ɛka ho ne nea wotwitwa, nea wɔde twitwiw, anaa nea wɔde mia so, ma ɛne sɔhwɛ pɔtee no ahwehwɛde ahorow hyia. Sɛ nhwɛso no, honam fam nneɛma a wɔsɔ hwɛ no betumi ahwehwɛ sɛ wɔde nhwɛsode ahorow a ɛwɔ nsusuwii pɔtee bi mu, bere a nnuru mu nhwehwɛmu hwehwɛ sɛ wɔde powder nhwɛsode a ɛyɛ pɛ di dwuma. Wɔ ahosiesie nhyehyɛe no mu no, ɛsɛ sɛ wɔhwɛ nneɛma a atwa yɛn ho ahyia tebea horow te sɛ ɔhyew ne ɔhyew a ɛwɔ so no so denneennen na amma nsakrae amma nneɛma mu.
2. honam fam agyapade ho sɔhwɛ .
Nneɛma a ɛwɔ graphite fillers mu no yɛ wɔn application adwumayɛ fapem, titiriw no, density, hardness, compression rebound, ne thermal conductivity ka ho.
1.Density testing: Wɔbu density denam susudua a wɔsusu nhwɛsoɔ bi dodoɔ ne ne kɛseɛ so, mpɛn pii no wɔde displacement kwan anaa geometric susudua kwan no di dwuma. Density nya packing no sealing effectiveness so nkɛntɛnso tẽẽ; Nneɛma a ɛyɛ den dodo anaasɛ ɛba fam no betumi ama asiane a ɛwɔ hɔ sɛ ɛbɛtwetwe no aba.
2.Hardness Testing: Wɔde shore hardness tester anaa microhardness tester di dwuma de susuw packing no compressive ahoɔden ho de hwɛ hu sɛ ɛko tia deformation wɔ nhyɛso kɛse ase.
3.Compression rebound: Simulating ankasa adwumayɛ tebea, pressure a wɔde di dwuma wɔ nhwɛsode no ne ne compression ratio ne rebound su ahorow no yɛ susuw de kyerɛ ne tenten-term stability.
4.Thermal conductivity testing: Wɔde laser flash kwan anaasɛ steady-State Heat Flow Method no na ɛsusu ɔhyew a ɛkɔ so wɔ graphite fillers no mu. Eyi ho hia titiriw ma aplikeshɔn a ɛyɛ adwuma wɔ-temperature tebea horow a ɛkorɔn ase.
3. Nnuru a wɔde yɛ nhwehwɛmu .
Nnuru a ɛwɔ graphite packing mu no yɛ ade titiriw a ɛma wotumi gyina nsɛe ano, enti ɛho hia sɛ wɔyɛ nnuru a wɔde yɛ nneɛma ho nhwehwɛmu pɛpɛɛpɛ. Nneɛma titiriw a wɔde sɔ hwɛ no bi ne carbon a ɛwɔ mu, nsõ a ɛwɔ mu, sulfur a ɛwɔ mu, ne dade a ɛyɛ dade.
1.Carbon Content Determination: Wɔde ɔhyew{1}}Infrared absorption kwan anaa titration kwan di dwuma de hwɛ sɛ graphite packing no du ahotew gyinapɛn no ho (mpɛn pii no, carbon a ɛwɔ mu a ɛboro 90% na ɛho hia).
2.Ash Content Test: Wɔhyew nhwɛsode bi wɔ ɔhyew a ɛkorɔn mu de susuw nneɛma a aka a ɛnyɛ nkwaboaa no fã. Nsõ a ɛboro so no betumi aka packing no wear resistance.
3.Sulfur Content Analysis: A high-frequency infrared carbon-Sulfur Analyzer anaa Chemical Titration kwan na wɔde di dwuma de hwɛ sulfur a ɛwɔ mu no so na ama asiane a ɛwɔ hɔ sɛ ɛbɛsɛe wɔ nnwinnade mu no so atew.
.
4. Nsɔano adwumayɛ ho adansedi .
Ɛsɛ sɛ wɔfa sɔhwɛ ahorow a wɔde hyɛ mu so hwɛ sɛ graphite packing no yɛ adwuma a etwa to. Akwan a wɔtaa fa so yɛ no bi ne compression stress relaxation tests ne leak rate sɔhwɛ ahorow.
1.compression stress relaxation test: Saa sɔhwɛ yi simulates tenten-bere mu nhyɛso tebea a packing wɔ seal cavity na susuw adwennwen porɔw bere kɔ so de susuw ne tenten-bere nsɔano ahotoso.
.
5. Sɔhwɛ amanneɛbɔ ne ne su sohwɛ .
Sɛ yɛwie sɔhwɛ mu nneɛma nyinaa a, ɛsɛ sɛ wɔbɔ nsɛm no mua na wɔyɛ sɔhwɛ amanneɛbɔ a ɛkɔ akyiri, a nhwɛsoɔ ho nsɛm, sɔhwɛ akwan, nea ɛfiri mu ba nhwehwɛmu, ne nsɛm a wɔde wie ka ho. Wɔ nneɛma a enni gyinapɛn ahorow ho no, ɛsɛ sɛ wɔhwehwɛ nea enti a ɛte saa no mu na wɔkamfo nkɔso ho nyansahyɛ ahorow ma. Bio nso, nnwumakuw betumi de daa spot checks ne third-afã sɔhwɛ ahorow abom de ahwɛ ahu sɛ graphite packing no yɛ papa na ɛyɛ den.
Awie
Sɔhwɛ kwan a wɔfa so yɛ graphite packing no yɛ anammɔn a ɛho hia a ɛbɛma wɔahwɛ ahu sɛ ɛyɛ adwuma na ahobammɔ wom. Ɛdenam nhwɛsode a wɔahyɛ da ayɛ, nipadua ne nnuru mu nhwehwɛmu a wɔayɛ no nhyehyɛe so, ne nsɔano adwumayɛ ho adanse a ɛyɛ den so no, wobetumi apaw nneɛma a ɛkorɔn-nneɛma a ɛyɛ papa, a ɛde mmoa a ɛho hia ma wɔ mfiridwuma mu nnwinnade a wɔde di dwuma a wotumi de ho to so no ho. Daakye, ɛnam nkɔsoɔ a aba wɔ nneɛma ho nyansahu mu nti, wɔbɛkɔ so ayɛ mfiridwuma ho sɔhwɛ a ɛyɛ papa sɛdeɛ ɛbɛyɛ a ɛbɛdi nnwuma a ɛkorɔn-nnwuma a ɛwɔ soro no ahiadeɛ ho dwuma.
