Sɛ́ nneɛma a ɛho hia wɔ mfiridwuma mu nkitahodi ne nsɔano nhyehyɛe mu no, ɔkwan a wɔfa so yɛ gaskets no nya wɔn nsusuwii mu pɛpɛɛpɛyɛ, mfiri su, ne wɔn dwumadi nkwa so nkɛntɛnso tẽẽ. Bere a mfiridwuma mu ahwehwɛde ahorow a ɛfa nneɛma a wɔde di dwuma ho no kɔ soro no, mfiridwuma a wɔde yɛ gasket no kɔ so dannan kɔ pɛpɛɛpɛyɛ a ɛkorɔn ne adwumayɛ a ɛkɔ soro so. Saa asɛm yi kyerɛkyerɛ mfiridwuma mu nsɛm atitiriw ne osuahu a mfaso wɔ so wɔ gasket a wɔyɛ mu fi nneɛma a wɔpaw, nneɛma atitiriw a wɔyɛ, nneɛma atitiriw a wɔyɛ, ne nea wɔhwɛ so yiye no ho nhyehyɛe mu wɔ nhyehyɛe kwan so.
1. Nneɛma a wɔpaw ne aduru a wɔde di kan yɛ .
Gasket a ɛyɛ adwuma no gyina nneɛma no su so titiriw. Nneɛma a wɔtaa de yɛ nneɛma no bi ne carbon steel (te sɛ Q235 ne 10# dade), dade a ɛnyɛ den (te sɛ 304 ne 316), kɔbere a wɔde afra (te sɛ H62 kɔbere), ne nneɛma a ɛnyɛ{6}}dade a ɛyɛ dade (te sɛ rɔba ne polytetrafluoroethylene). Ɛsɛ sɛ wɔde ahoɔden, corrosion resistance, anaasɛ conductivity na ɛpaw dadeɛ a wɔde yɛ adwuma, a wɔayɛ no sɛdeɛ ɛfata wɔ adwumayɛ tebea mu. Wɔ nea ɛnyɛ{9}}metallic gaskets ho no, wosi elasticity, ɔhyew a ɛko tia, ne nnuru a ɛyɛ den so dua.
Nneɛma a wɔde di kan yɛ ade no yɛ ade titiriw a wɔde yɛ. Dade ntama anaa waya hwehwɛ sɛ wɔde hohoro nneɛma no ani (te sɛ pickling ne descaling) ne annealing na ama wɔayi nhyɛso a ɛwɔ mu no afi hɔ na ama plasticity atu mpɔn. Non{2}}Metallic nneɛma hwehwɛ sɛ wɔhwɛ ɔhyew a wɔde sie ne nsu a ɛyɛ hyew so na amma onyin a ɛka wɔn nsu no ankɔ so. Sɛ nhwɛso no, wɔtaa de dade a ɛnyɛ den gasket raw material ma ɛyɛ den sen HV180 a ɛnyɛ den anaasɛ ɛne no yɛ pɛ na ama wɔahwɛ ahu sɛ ɛyɛ papa bere a wɔde stamping anaasɛ awɔw aba akyiri yi no.
ii. Mainstream Forming Process nkyekyɛmu ne ne su .
Wobetumi akyekyɛ gasket forming processes no mu ayɛ no ahorow anan titiriw: stamping, forging/cold heading, injection molding (ma non{0}}dadeɛ nneɛma), ne powder metallurgy, a emu biara wɔ n’ankasa dwumadie tebea ne mfiridwuma mu mfasoɔ.
1. Stamping: Ahyɛnsodeɛ a ɛkyerɛ sɛ ɛyɛ adwuma yie na ɛyɛ pɛpɛɛpɛ .
Stamping yɛ ɔkwan a wɔtaa fa so yɛ dade gaskets. Wɔde die di dwuma wɔ nhyɛso ase ma plastic kwan so deform dade a wɔde ayɛ krataa no. Adeyɛ titiriw no bi ne: blanking (punching a round blank) → stamping passes biako anaa nea ɛboro saa (yɛ ring structure no a ɛyɛ) → deburring (trimming anaa vibratory finishing). Saa adeyɛ yi fata ma mass production of thin{}}walled gaskets (a ne kɛse sua sen 3mm anaasɛ ɛne no yɛ pɛ), a ɛma nsusuwii a ɛyɛ pɛpɛɛpɛ a ɛyɛ pɛpɛɛpɛ (tolerances a ɛkɔ ±0.05mm) ne production efficiency a ɛkorɔn (asinasin ɔha wɔ simma biara mu). Sɛ nhwɛso no, wɔtaa de Multi-Station Progressive Dies no hyɛ dade a ɛyɛ mmerɛw a wɔde hyɛ kar engine mu ma kar engine ahorow no so. Die set baako betumi awie anammɔn mmiɛnsa a ɛne punching, blanking, ne forming, a ɛde ba a material utilization rate a ɛboro 85%.
2. Forging/Cold asɛmti: Ano aduru ma High-Ahwehwɛde a ahoɔden wom .
Sɛ ɛyɛ den-walled gaskets a wɔde ahyɛ adesoa a ɛkɔ soro anaasɛ ɔhyew a ɛkɔ soro (te sɛ dade ring gaskets a wɔde yɛ flange nkitahodi) a, wɔtaa de forging anaa cold heading di dwuma. Hot forging ma blank (mpɛn pii no 800-1100℃) no yɛ hyew ma ɛyɛ mmerɛw ansa na ayɛ no denam die so, na ɛde aburow a ɛyɛ fɛ na ɛma mfiridwuma mu nneɛma tu mpɔn. Nanso, asɛmti a ɛyɛ nwini no fata ma nneɛma a ɛyɛ den a ɛba fam (te sɛ dade a ɛyɛ mmerɛw). Wɔnam mpɛn pii a ɛyɛ den a ɛkɔ so wɔ dan mu hyew so na ɛyɛ nhyehyɛe a ɛte sɛ ring no, na ɛma wonya nsusuwii a ɛkorɔn a ɛyɛ pɛpɛɛpɛ bere a wɔde toto ɔhyew a ɛyɛ hyew ho (a ɛyɛ ±0.1mm a wotumi gyina ano). Sɛ nhwɛso no, stainless steel octagonal washers a wɔde di dwuma wɔ petrochemical pipelines mu no taa yɛ denam cold heading preforming ne akyiri yi dannan a wɔaka abom so de hwɛ hu sɛ sealing surface flatness a ennu anaasɛ ɛne 0.02mm yɛ pɛ.
3. Injection molding ne compression molding nhyehyɛe ma non{1}}metallic gaskets .
Wɔtaa de injection molding anaasɛ compression molding na ɛyɛ non{0}}metallic gaskets te sɛ rɔba ne polytetrafluoroethylene (PTFE). Nea ɛka injection molding ho ne sɛ wɔde nneɛma a ayow bɛhyɛ nkuku no mu ma wɔ nhyɛso kɛse ase na ɛfata ma nneɛma a ɛyɛ den (te sɛ gaskets a wɔabom ayɛ a wɔde nnompe ayɛ). Compression molding hwehwɛ sɛ wɔde blank a wɔayɛ no foforo no gu nkuku a ɛyɛ hyew mu na wɔsa no yare wɔ nhyɛso ase, na ɛma ɛfata kɛse ma nneɛma a ɛyɛ den-afã (te sɛ asbestos rɔba gaskets). Nneɛma a ɛho hia a wɔde di dwuma no bi ne ɔhyew (sɛ nhwɛso no, ɛsɛ sɛ wodi PTFE injection molding temperature so wɔ 360℃ne 380℃ntam ), nhyɛso (a mpɛn pii no ɛyɛ kɛse sen 80 MPa anaasɛ ɛne no yɛ pɛ), ne onwini dodow na amma shrinkage deformation ne mframa a ɛwɔ mu no ayɛ sintɔ.
iii. Key process parameters ne akwankyerɛ a ɛfa nneɛma pa ho .
Gasket molding no su gyina ɔkwan a wɔfa so di dwuma no so tẽẽ tẽẽ. Sɛ yɛfa stamping nhyehyɛe no sɛ nhwɛso a, die clearance (mpɛn pii no 5%-12% a ɛyɛ ade no mu duru), stamping ahoɔhare ( a ennu anaasɛ ɛne 150 strokes/simma a ɛyɛ pɛ ma stamping a ɛkɔ soro de siw nneɛma a ɛtetew ano), ne srade tebea horow (te sɛ nea wɔde engine oil anaa graphite coating a wɔde yɛ friction coefffifient no so tew. Sɛ awɔw asɛmti no, blank no nsusuwii a wɔadi kan ayɛ (te sɛ cylindrical anaa pancake) ne tumi a ɛrewosow no kyekyɛ nya tẽẽ nsusuwii no so nkɛntɛnso, a ɛhwehwɛ sɛ finite element simulation na ama deformation kwan no ayɛ yiye.
Wɔ nnansa yi mfe mu no, nhyehyɛe a wɔyɛ no yiye no atwe adwene asi tumidi a nyansa wom ne nneɛma a wɔyɛ no ahabammono so. Sɛ nhwɛso no, wɔde nhyɛso sensor ahorow ba sɛnea ɛbɛyɛ a ɛbɛhwɛ adesoa nsakrae so wɔ bere ankasa mu, a wɔde mfiri adesua nhyehyɛe ahorow aka ho de akyerɛ sɛ die wear trends; ne nsuo-wɔde sradeɛ a ɛtumi nwura mu di dwuma sene atetesɛm mu ngo-based lubrication de tew nneɛma a atwa yɛn ho ahyia ho efĩ so wɔ ahotew akwan a ɛdi akyire no so.
iv. Mfiridwuma a ɛhwɛ nneɛma pa so ne nea wɔde hwɛ nneɛma mu .
Wɔyɛ gasket no yieyɛ nhwehwɛmu wɔ adeyɛ no nyinaa mu, a ɛtwe adwene si dimensional accuracy (te sɛ emu ntwemu, akyi ntwemu, ne ne kɛseɛ), ne soro su (mpaapaemu ne nsensaneeɛ a ɛnni hɔ), mfiridwuma mu su (ahoɔden a ɛyɛ den ne den), ne dwumadie nsɛnkyerɛnneɛ (te sɛ nhyɛsoɔ a ɛsan ba a ɛwɔ afiri a wɔde kyekyere mframa no mu). Akwan a wɔfa so sɔ hwɛ a wɔtaa yɛ no bi ne mfiri a wɔde susuw nneɛma a wɔde susuw nneɛma ho (ma geometric dimensions), microhardness sɔhwɛ (a wɔde hwɛ sɛnea ade no mu dɔ a ɛyɛ den no mu dɔ), ne airtight testing (ma gaskets a wɔde sealing rates no pue). Sɛnea ɛbɛyɛ a wobetumi ayɛ adwuma a ɛkorɔn-awiei (te sɛ ahunmu), a ɛnyɛ{3}}sɔhwɛ a ɛsɛe ade (te sɛ ultrasonic sɔhwɛ) nso ho hia na ama wɔahu sintɔ ahorow a ɛwɔ mu.
Awie
Ɛwom sɛ gasket yɛ nneɛma nketenkete de, nanso wɔn nwene no ka nneɛma a ɛho hia ho nyansahu, mfiridwuma ho nhyehyɛe, ne mfiridwuma ho nimdeɛ a ɛwɔ mu no bom. Bere a mfiridwuma mu nnwinnade redan akɔ parameterization a ɛkorɔn ne nkwa tenten so no, gasket molding mfiridwuma bɛkɔ so akɔ so akɔ pɛpɛɛpɛ, customization, ne nyansa. Mastering core process parameters ne key quality control points no ho hia kɛse ma gasket adwumayɛ a wotumi de ho to so ne mfiridwuma mu nkɔnsɔnkɔnsɔn a wɔbɛma ayɛ yiye a wɔbɛhyɛ ho nkuran.
