Sanitary (aduan grade) a ɛyɛ dade a ɛnyɛ den a wɔyɛ ne nea wɔde di dwuma .
1. Nhwehwɛmu a wɔyɛe wɔ dade a ɛnyɛ den paipu fittings ho .
Wobetumi de Auger electron spectroscopy (AES) ne X-ray spectroscopy (SPS) nyinaa adi dwuma de ahwehwɛ dade a ɛnyɛ den no ani de ahu sɛnea dade a ɛnyɛ den a wɔde fa nsu afiri a wɔde fa nsu mu no mu ne akyi no nsɛe. AES kwan no nhwehwɛmu ntwemu no sua koraa, a ebetumi ayɛ nea ennu 20nm, na ne dwumadi a edi kan ne sɛ ɛbɛma nsonsonoe aba nneɛma ntam. XPS kwan no mu nhwehwɛmu no bɛyɛ 10μm, a ɛfata sɛ ɛma organic chemistry a ɛwɔ surface elements a ɛbɛn ho no mu da hɔ.
Wɔde AES ne XPS detectors di dwuma de yɛ scanner no wɔ fam no ani na wɔde 316 dade a ɛnyɛ den mprɛte 316 a ɛda adi wɔ mframa mu no ayɛ no fɛfɛɛfɛ. Wɔde ba awiei sɛ nea ɛtaa yɛ nea ɛtaa ba wɔ ɔfasu no ani nhwehwɛmu a ɛfa dade a ɛnyɛ den paipu no ho no yɛ 15nm, na wɔakyerɛ passivation treatment layer a ɛfa ho no. Nneɛma a wɔahyehyɛ, ne kɛse ne ne tumi a ɛko tia corrosion, ne nea ɛkeka ho.
Sɛnea nkyerɛase no kyerɛ no, dade a ɛnyɛ den pii no wɔ chromium ne nickel a ɛdɔɔso, na ebi nso wɔ molybdenum (te sɛ 316L00CR17NI14MO2), titanium, ne nea ɛkeka ho, a mpɛn pii no ɛwɔ 10.5% chromium, a ɛwɔ corrosion a ɛyɛ papa. Corrosion resistance Sɛ ɛfiri chromium-rich passivation layer no siesie su mu nti, passivation layer no taa yɛ 3-5nm thick, anaasɛ ne kɛseɛ te sɛ molecule 15. Wɔyɛ passivation layer no wɔ mframa oxidation-reduction reaction no nyinaa mu, a chromium ne iron no oxidized denam mframa so. Sɛ passivation layer no sɛe a, wɔbɛyɛ passivation layer foforo ntɛmntɛm anaasɛ nnyinasosɛm a ɛne galvanic cell no bɛba ntɛm ara. Stainless steel mprɛte no benya crevice a emu dɔ a ɛyɛ corrosion ne stress corrosion. Nkyene a ɛko tia passivation layer no ne nsu a ɛwɔ nneɛma a ɛwɔ dade a ɛnyɛ den mprɛte no mu no wɔ abusuabɔ. Sɛ nhwɛso no, chromium, nickel, ne molybdenum a ɛdɔɔso no betumi ama nsonsonoe a ɛwɔ ahoɔden a ɛwɔ passivation layer no mu ne corrosion resistance a ɛwɔ passivation layer no mu no ayɛ kɛse. Ɛsan nso fa sɛnea wɔyɛ dade a ɛwɔ dade a ɛnyɛ den mu ne nneɛma a ɛma nsu yɛ adwuma a wɔde di dwuma ho.
2. Asase ani erosion tebea a ɛyɛ dade a ɛnyɛ den paipu fittings .
1. Passivation treatment layer a ɛwɔ stainless steel surface a ɛwɔ CI-containing material no mu no yɛ mmerɛw yiye sɛ wɔbɛsɛe no, esiane oxidation tumi a ɛkorɔn a CI-air wɔ nti. Passivation layer no a wɔatintim no yɛ nea dade no nsɛe no bere nyinaa nkutoo. Mpɛn pii no, passivation layer no sɛe wɔ passivation area no fã a ??dadeɛ a ɛnyɛ den no nkutoo. Nsunsuanso a etching no nya no gyina ntokuru pa anaasɛ ntini a ɛyɛ fɛ a wɔde ba no so. Wɔfrɛ etching ketewa a ɛte sɛ amena a ɛntrɛw wɔ ade a wɔde yɛ nneɛma no ani daa no crevice corrosion. Sɛnea mpaapaemu no nsɛe no kɔ soro bere a ɔhyew no kɔ soro no na ɛkɔ soro bere a nneɛma a ɛwɔ mu no kɔ soro no. Ano aduru ne sɛ wode ultra-low carbon anaa low-carbon stainless steel (te sɛ lita 316 304) bedi dwuma .
2. Bere a wɔreyɛ austenitic dade a ɛnyɛ den no na wɔreyɛ welding no, ɛnyɛ den sɛ ɛsɛe ade a ɛyɛ mmerɛw a ɛwɔ dade a ɛnyɛ den no ani no. Sɛ ɔhyew no hyew ne ɔhyew ahoɔhare bere a wɔreyɛ ne welding no wɔ stainless steel sensitization temperature range (bɛyɛ 425-815°C) mu a, carbon a ɛyɛ den sen biara a ɛwɔ ade no mu no di kan de nsu gu ahwehwɛ no hye so na ɛne chromium bom yɛ chromium CRC R2-3C 6 . Wɔ saa tebea yi mu no, carbon a ɛtrɛw wɔ austenite mu no dɔɔso sen chromium de no, na chromium ntumi ntua chromium a ɛyera esiane chromium carbide a ɛba wɔ ahwehwɛ no hye so nti no so ka. Nea ɛde ba ne sɛ, chromium a ɛwɔ crystal grain boundary no mu no kɔ soro bere a chromium carbide analysis no yɛ na ɛtew so bere a ɛne etch nneɛma te sɛ CI- wɔ ade no mu no di nkitaho no, ɛbɛma micro rechargeable battery no abubu. Nkyene yɛ ahwehwɛ no ani kɛkɛ, na ɛkɔ mu ntɛmntɛm ma ɛyɛ intergranular corrosion. Dade nhama a ɛnyɛ den yiye no da adi kɛse wɔ anyinam ahoɔden welding mu.
3. Adwennwene Porɔm Mpaapaemu: Ɛyɛ nkɛntɛnso a edi mũ a ɛwɔ static data ground stress ne erosion so na ɛma mpaapaemu ne dade nneɛma fifi. Abɔde mu nneɛma a atwa yɛn ho ahyia a ɛma adwennwen nsɛe na ɔsɛe no taa yɛ nea ɛyɛ den yiye. Ɛnyɛ asase so nhyɛso nko na ɛyɛ tensile, na mmom asase so nhyɛso ne emu adwennwen a efi nneɛma a wɔyɛ, anyinam ahoɔden welding anaasɛ dum a wɔde dum ne dade nneɛma a ɛyɛ hyew mu ba nso.
3. Nkitahodi a ɛda dade a ɛwɔ mu ne akyi a ɛyɛ adwuma ne corrosion resistance a ɛwɔ stainless steel pipe fittings ntam .
Nneɛma a ɛwɔ mu ne akyi a ɛyɛ dade paipu fittings (te sɛ nnuru a wɔde yɛ polish, grinding ne polishing) no wɔ passivation treatment layers a eye kyɛn so, a ɛwɔ corrosion resistance a emu yɛ den. Nneɛma a ɛwɔ mu ne akyi no yɛ mmerɛw kɛse, na nneɛma kakraa bi pɛ na ɛbata ho, a mfaso wɔ so ma corrosion resistance. Dodow a nsu a ɛwɔ soro a ɛyɛ mmerɛw kɛse no sua wɔ afiri no mu no, dodow no ara na eye ma ahotew, titiriw wɔ nnuruyɛ mu.
. Saa bere yi, tube no akyi ani no reyɛ akwan abien a ɛsono emu biara a ɛyɛ ne nyinaa, kyerɛ sɛ, dade a ɛnyɛ den passivation layer no nsakrae ne ne nwene (a mucosa a ɛyɛ den no ka ho). Eyi te saa efisɛ gyinapɛn a ɛwɔ hɔ ma sikasɛm mu nsusuwii a ɛkɔ soro ne nea ɛkɔ soro wɔ soro no mu no yɛ soronko, na anodic oxidation no nwene. Esiane tebea horow a ɛwɔ hɔ ma film formation ne passivation of the surface microscopic convex and concave parts, ne anode no a ɛpaapae nti, dade nkyene dodow a ɛwɔ anode beae no kɔ so yɛ kɛse, na ɛyɛ ntini a ɛyɛ den a ɛko tia ahoɔden kɛse wɔ soro. Nsonsonoe a ɛwɔ film no mu duru mu wɔ convex ne concave afã horow no ma current ahoɔden kɛse a ɛwɔ anodized surface layer, ntɛmntɛm electrostatic induction melting, na bere tiaa bi mu no ɛboro botae a ɛne sɛ wɔbɛma akyi sikasɛm no fã a ɛda nsow no ayɛ petee, na ebetumi aboro ra≤0.2-0.4μm a ɛkorɔn no so. Na wɔ saa nkɛntɛnso yi ase no, chromium nsu a ɛwɔ paipu no ani no kɔ soro, na tumi a ɛko tia corrosion a ɛwɔ stainless steel passivation passivation treatment layer no mu no tu mpɔn.
Sɛnea wobɛte ase yiye no ɛsɛ sɛ polishing no yɛ nea ɛfa kokoam kwan a wɔfa so yɛ lithium battery electrolyte, concentration value, temperature, plug-in time, current intensity, electrical level, ne tube metal surface treatment level ho. Sɛ wɔantumi anyɛ saa mfiridwuma yi yiye a, ɛbɛsɛe sɛnea paipu no ani yɛ mmerɛw no ankasa. Sɛ electrolysis kwan no yɛ level dodo a, convex ne concave surfaces pii bɛba, na mpo tube biara bɛgye sika pii. Ɛsɛ sɛ su ankasa no yɛ mfiridwuma na ɛka no yɛ kɛse.
2. Grinding ne polishing a ɛwɔ akyi wɔ tube no so: grinding ne polishing a ɛwɔ rotation ne parallel lines. Ɛha yi, sɛ yɛfa rotary mfiri a wɔde twitwiw nneɛma sɛ nhwɛso a, mfiri a wɔde twitwiw nneɛma yɛ nea ɛyɛ mmerɛw koraa, tumi ne afiri a wɔde twitwiw nneɛma ne mfiri a wɔde twitwiw nneɛma a ɛkɔ anim no yɛ nea ɛnyɛ den koraa, tumi ne afiri a wɔde twitwiw nneɛma, ne wax a wɔde twitwiw nneɛma a ɛkɔ anim. Wɔde ntama disc ne ntama disc a wɔde anhwea pa a wɔahyɛ no agyirae ayɛ no fɛfɛɛfɛ kɔ anim ne akyi wɔ paipu no mu ne akyi mpɛn pii, na nea wɔde wie no betumi adu RA ≤ 0.2-0.4μ m .
Sɛ wɔde toto electrolytic grinding ho a, wɔde mfiri a wɔde twitwiw nneɛma di dwuma kɛse esiane nnwinnade a ɛnyɛ den, mfiridwuma mu nneɛma a ɛba fam, nea ɛyɛ mmerɛw sɛ wobɛte ase, ɛho ka sua, na biribiara nsɛe wɔ tube no so nti. Nanso, corrosion resistance a ɛwɔ soro printing layer no mu no ye sen electropolishing koraa.
Nsunsuanso kɛse a ɛwɔ afiri a wɔde ayɛ nwini a wɔde ayɛ afiri no mu no yɛ tebea a ɛyɛ den, kyerɛ sɛ, aba a wɔde yɛ adwuma no sõ yiye, na ɛnyɛ nea ɛfata sɛ wɔde hyerɛn na ɛbɔ. Sɛ yɛbɛka no katee a, ɛndu ɔman no nnwuma gyinapɛn ho, enti ɛsɛ sɛ wɔyɛ thermosolidification (dum).
3. Furnace a ɛyɛ hyew a wɔde gas abɔ ho ban: Ɛwɔ afã abien: fononoo a ɛwɔ nipadua no mu a ɛyɛ hyew ne ammonia mfiri a ɛma ammonia a ɛyɛ pɛ.
Furnace a ɛyɛ hyew a ɛyɛ hyew: Nneɛma titiriw no yɛ cross-section muffle tank a ɛte sɛ ring, ne ɔkwan a wɔfa so yɛ ɔhyew a ɛwɔ ɔhyew nhama a ɛyɛ hyew kɛse a wɔahyehyɛ wɔ afã abien no nyinaa ne ase ano. Wɔde ammonia mframa a wɔapete no di dwuma sɛ nsu a wɔde yɛ adwuma a wɔde siesie nsu ne mframa a ɛma nsu yɛ nwini a ɛkyinkyini no. Ɛho nhia sɛ wɔde nsu paipu a wɔde hyɛ ɔhyew ayaresa kwan yi so no gu mu na ɛyɛ passivated, na ɛma ɛyɛ mmerɛw sɛ emu ne akyi no bɛyɛ mmerɛw na ɛmma nsu paipu no ani nyɛ pɛpɛɛpɛ kakra a ɛnam pickling so ba no. Esiane sɛ saa nneɛma nketenkete yi a ɛnkɔ so pɛpɛɛpɛ yi bɛma paipu no ayɛ mmerɛw wɔ nneɛma a atwa yɛn ho ahyia ho ahotew ho nhama a ɛyɛ mmerɛw no ho. Enti, paw mframa a ɛbɔ ho ban a ɛbɔ ho ban fi fononoo a ɛyɛ hyew ho. Hangao Tech's . Mframa a ɛbɔ ho ban a nyansa wom a ɛyɛ hyew solution fononoo . Ɛdi w’ahiadeɛ ho dwuma koraa, ɛnyɛ sɛ ɛwɔ adwumayɛ a ɛkorɔn a mframa ntumi nkɔ mu nko, na mmom ɛyɛ adwuma yie ne ahoɔden a wɔkora so a ɛkorɔn nso. Sɛ wɔde toto nnwinnade koro no ara ho a, ebetumi akora ahoɔden a wɔde di dwuma no bɛyɛ 20%-30% so.
