Nnianimu
Nneɛma a wɔyɛ de yɛ galvanized steel sheets no yɛ tweatiboɔ wɔ dadeɛ adwumayɛ mu, ɛma nneɛma a ɛho hia ma dwumadie bebree a ɛfiri adansiɛ so kɔsi karyɛ so. Wɔ adwumayɛbea ahorow, wɔn a wɔkyekyɛ nneɛma, ne wɔn a wɔtɔn nneɛma akɛse fam no, ntease a ɛwɔ saa nhyehyɛe yi mu a ɛyɛ den no ho hia kɛse na ama wɔahwɛ ahu sɛ nneɛma a wɔyɛ no yɛ papa na wɔadi nnwuma ho dwuma. Saa nhwehwɛmu a ɛkɔ akyiri yi hwehwɛ akwan, nneɛma, ne mfiridwuma a ɛwɔ mu a ɛma wonya nneɛma a ɛkorɔn no mu . galvanized steel sheets , a ɛma hann ba nea ɛho hia wɔ nnɛyi mfiridwuma mu no so.
Nneɛma atitiriw a ɛwɔ galvanization mu .
Galvanization yɛ dadeɛ kwan a wɔfa so de zinc a wɔde kata dadeɛ anaa dadeɛ so na amma nsuo antɔ na ayɛ nwunu. Zinc layer no yɛ adwuma sɛ akwanside a ɛbɔ ho ban, na ɛbɔ dade a ɛwɔ ase no ho ban fi nneɛma a atwa yɛn ho ahyia te sɛ nsu ne oxygen ho. Saa adeyɛ yi ma dade a wɔde yɛ nneɛma no nkwa nna yɛ kɛse na ɛma ɛyɛ den sɛ ɛbɛkɔ so atra hɔ, na ɛma dade ntama a wɔde galvanized ayɛ no yɛ nneɛma a wɔpɛ wɔ nnwuma ahorow mu.
Abakɔsɛm mu nsɛm a wɔaka abom .
Galvanization ho adwene no fi afeha a ɛto so 19 mfiase bere a Luigi Galvani huu electrochemical adeyɛ a mprempren ne din wɔ so no. Nanso, ɛyɛ 1830 mfe no mu ansa na galvanization a wɔde di dwuma nea edi kan no bae. Adeyɛ no anya nkɔso kɛse fi saa bere no, na ɛde mfiridwuma ne akwan a ɛkɔ anim a wɔde bɛma adwumayɛ ne nneɛma a wɔyɛ no ayɛ yiye aka ho.
Nneɛma a wɔde yɛ adwuma ne akwan a wɔfa so yɛ ansa na wɔayɛ aduru .
Nneɛma a wɔde yɛ nneɛma a wɔde ayɛ galvanized a wɔyɛ no fi ase denam nneɛma a wɔde yɛ nneɛma a ɛyɛ papa a wɔpaw so. Nneɛma titiriw a ɛwom ne dade nkrataa ne zinc, a ahotew ne nea ɛwom no nyinaa di dwuma titiriw wɔ ade a etwa to no adwumayɛ mu.
Dade a Wɔpaw .
Steel grade a ɛfata a wobɛpaw no ho hia na ama woanya galvanization aba a eye sen biara. Ɛsɛ sɛ wosusuw nneɛma te sɛ carbon a ɛwɔ mu, ne soro su, ne mfiri su ho. Wɔtaa de dade a carbon sua di dwuma esiane sɛnea ɛyɛ adwuma yiye a ɛyɛ ne sɛnea ɛyɛ ne sɛnea ɛne zinc a wɔde kata so no hyia nti.
Surface ahosiesie .
Ansa na galvanization bɛba no, dade ntama no fa ahotew mu denneennen de yi efĩ te sɛ ngo, efĩ, ne owiyammo nsenia fi hɔ. Mpɛn pii no, adeyɛ a wɔyɛ ansa na wɔayɛ aduru no hwehwɛ sɛ woyi fi mu, pickling wɔ acid solutions mu, ne nsu a ɛtwetwe. Eyi hwɛ hu sɛ dade no ani ho tew wɔ nnuru mu, na ɛma ɛbata ho denneennen wɔ zinc a wɔde kata so ne dade a ɛwɔ ase no ntam.
galvanization akwan .
Akwan titiriw abien na ɛwɔ hɔ a wɔfa so yɛ dade a wɔde galvanizing ayɛ: hot-dip galvanizing ne electrogalvanizing. Ɔkwan biara ma wonya mfaso soronko na ɛfata ma dwumadie pɔtee bi.
Hot-dip galvanizing .
Hot-dip galvanizing no kyerɛ sɛ wɔde dade ntama a wɔasiesie no bɛhyɛ zinc a ayɛ hyew a wɔde ayɛ hyew akodu bɛyɛ 450°C(842°F) mu. Dade no ne zinc no yɛ adwuma, na ɛyɛ zinc-dade a wɔde afra a ɛtoatoa so a wɔde zinc a ɛho tew a ɛwɔ soro no ahyɛ so. Saa kwan yi yɛ nea etu mpɔn kɛse ma corrosion resistance a ɛyɛ den na wɔde di dwuma kɛse esiane sɛ ɛho ka sua ne nneɛma a ɛyɛ den a ɛde ba nti.
Sɛnea Amerika Galvanizers Association kyerɛ no, galvanizing a ɛyɛ hyew no betumi anya nneɛma a wɔde kata so a ne kɛse fi microns 45 kosi 85, a egyina nneɛma te sɛ bere a wɔde hyɛ nsu mu ne dade a wɔde yɛ adwuma so. Steel nkratafa a wɔde galvanized ayɛ no fata ma mmeae a ɛyɛ den a ɛho hia sɛ wɔbɔ ho ban kɛse.
Electrogalvanizing .
Electrogalvanizing, anaasɛ electroplating, de zinc a wɔde kata dade no so no di dwuma denam anyinam ahoɔden a ɛwɔ electrolytic solution mu. Saa kwan yi ma wotumi di ade a wɔde kata so no so pɛpɛɛpɛ, na mpɛn pii no ɛma nneɛma a ɛyɛ tratraa no fi microns 5 kosi 30. Electrogalvanized steel sheets da no adi sɛ ɛyɛ mmerɛw yiye wɔ soro na wɔtaa de di dwuma wɔ nneɛma a ɛho hia sɛ wɔde wie a ɛyɛ papa, te sɛ kar nipadua a wɔde ayɛ nneɛma no mu.
Ɛmfa ho sɛ wɔyɛ nneɛma a ɛyɛ tratraa a wɔde kata so no, ntama a wɔde anyinam ahoɔden ayɛ no ma ahobammɔ a ɛfata ma abɔnten so nneɛma pii a wɔde di dwuma wɔ dan mu ne nea ɛnyɛ den. Adeyɛ no tumi a wɔde di dwuma ne sɛnea ɛyɛ pɛ no ma ɛyɛ nea eye ma nneɛma a ɛyɛ fɛ a ɛyɛ fɛ ne abodwokyɛre a emu yɛ den.
Coating su ne adwumayɛ .
Nneɛma a zinc a wɔde kata so no su ahorow nya so nkɛntɛnso kɛse. Nneɛma te sɛ coating thickness, adhesion, ne uniformity na ɛkyerɛ ade no corrosion resistance ne mfiridwuma su.
Coating a ɛyɛ den .
Mpɛn pii no, zinc a ɛyɛ den a wɔde kata so no ma wotumi gyina nsɛe ano yiye denam afɔrebɔ nneɛma pii a wɔde ma de bɔ dade a ɛwɔ ase no ho ban so. Nanso, nneɛma a wɔde kata so a ɛyɛ den dodo no betumi de nsɛm te sɛ brittleness ne spangle sintɔ ahorow aba. Kari a wɔbɛkari pɛ wɔ coating thickness mu no ho hia kɛse na ama ahobammɔ ayɛ yiye bere a wɔma nneɛma no mudi mu kura.
Nnwumayɛbea gyinapɛn te sɛ ASTM A653 ne EN 10346 kyerɛ sɛnea wɔhwehwɛ nneɛma a wɔde kata so no, hwɛ hu sɛ nneɛma a wɔde galvanized ayɛ no hyia na wotumi de ho to so. Gyinapɛn ahorow yi a wobedi so no ho hia na ama wɔn a wɔyɛ nneɛma no adi nea adetɔfo hwɛ kwan ne mmara sodi ho dwuma.
Adhesion ne uniformity .
Adhesion a ɛfata a ɛda zinc coating ne steel substrate ntam no ho hia kɛse ma bere tenten adwumayɛ. Nsɛm te sɛ peeling anaasɛ flaking betumi asɛe ahobammɔ a ɛwɔ so no, na ama dade no ayɛ nea ɛyɛ nneɛma a ɛporɔw. Uniform coating distribution across the steel sheet hwɛ hu sɛ ahobammɔ ne sɛnea ɛte daa.
Nneɛma a wɔyɛ a ɛkɔ akyiri ne nhwehwɛmu a ɛkɔ so boa ma wonya adhesion ne uniformity a ɛkorɔn. Mfiridwuma te sɛ mframa nnade ne electromagnetic wiping control zinc coating thickness bere a wɔreyɛ galvanizing no, na ɛma nneɛma no yɛ papa.
Akwan a wɔfa so hwɛ nneɛma pa so ne nea wɔde sɔ hwɛ .
Nneɛma a ɛyɛ den a wɔde bedi dwuma wɔ ɔkwan a ɛyɛ papa so a wɔde bedi dwuma no ho hia na ama wɔatumi ayɛ dade nkrataa a wɔde galvanized ayɛ a ɛne nnwuma gyinapɛn ne adetɔfo ahwehwɛde hyia. Akwan ahodoɔ a wɔfa so sɔ hwɛ no hwɛ honam fam ne nnuru a ɛwɔ nneɛma a wɔde kata so no mu.
Coating thickness susudua .
Wɔtaa de akwan a ɛnyɛ nea ɛsɛe ade te sɛ magnetic induction ne eddy current akwan di dwuma de susuw zinc coating thickness. Saa akwan yi ma akenkan yɛ pɛpɛɛpɛ a ɛnsɛe nsɛm no, na ɛma kwan ma wɔhwɛ ma nneɛma yɛ papa bere a wɔreyɛ no.
Adhesion sɔhwɛ ahorow .
Adhesion sɔhwɛ ahorow, te sɛ bend sɔhwɛ ne pull-off sɔhwɛ ahorow, hwɛ bond ahoɔden a ɛda zinc layer ne dade substrate ntam. Saa sɔhwɛ ahorow yi yɛ mfiri mu nhyɛso ho mfonini sɛnea nneɛma no betumi ahyia bere a wɔreyɛ ne nea wɔde yɛ adwuma no, na ɛhwɛ hu sɛ ade a wɔde kata so no kɔ so yɛ pɛ wɔ tebea horow mu.
Nneɛma a ɛko tia corrosion no ho nhwehwɛmu .
Nkyene a wɔde petepete so sɔhwɛ ne cyclic corrosion tests ma galvanized steel sheets kɔ corrosive environments a ɛyɛ ntɛmntɛm mu de kyerɛ sɛnea ɛbɛyɛ adwuma bere tenten. Saa nhwehwɛmu ahorow yi boa wɔn a wɔyɛ no yiye ma ɛyɛ yiye wɔ nneɛma a wɔde kata so ne nneɛma a wɔde yɛ nneɛma no mu ma ɛyɛ den sɛ ɛbɛkɔ so atra hɔ akyɛ.
Nneɛma a atwa yɛn ho ahyia ne ahobammɔ ho nsusuwii .
Galvanization nhyehyɛe no fa nnuru ne nneɛma a ɛho hia sɛ wɔhwɛ so yiye na ama wɔatumi adi nneɛma a atwa yɛn ho ahyia so na adwumayɛfo anya ahobammɔ ho dwuma.
Nneɛma a wɔsɛe no ho nhyehyɛe .
Nsu a efi pickling bath ne flux solutions a wɔasɛe no mu no wɔ acid ne dade a ɛsɛ sɛ wɔyɛ ho adwuma ansa na wɔatow agu. Nneɛma a wɔde yɛ nwura a wɔde di dwuma ne nneyɛe a wɔde di dwuma bio a wɔde di dwuma no ma nneɛma a atwa yɛn ho ahyia no so tew na ɛne mmara te sɛ Resource Conservation and Recovery Act (RCRA) hyia.
Adwumayɛfo Ahobammɔ .
Nneɛma a ɛyɛ hu te sɛ acid ne zinc a wɔabɔ no a wɔde wɔn ho bɛhyɛ mu no hwehwɛ sɛ wɔyɛ ahobammɔ ho nhyehyɛe a emu yɛ den. Ankorankoro ahobammɔ nnwinnade (PPE), mframa pa a wɔde ma, ne ntetee ho hia na ama wɔabɔ adwumayɛfo ho ban afi asiane a ebetumi aba a ɛbata galvanization nhyehyɛe no ho no ho.
Nneɛma a wɔde yɛ dade a wɔde galvanized ayɛ no .
galvanized steel sheets yɛ integral wɔ nnwuma ahorow mu esiane wɔn corrosion resistance ne mfiri ahoɔden nti.
Adansi Nnwuma .
Wɔ adansi mu no, wɔde galvanized steel sheets di dwuma de yɛ ɔdan atifi, siding, structure frameworks, ne infrastructure projects. Sɛnea wotumi gyina wim tebea a emu yɛ den ano no ma ɛyɛ nea eye ma abɔnten so nneɛma a wɔde di dwuma.
Kar Ho Nneɛma a Wɔyɛ .
Kar adwuma no de dade a wɔde galvanized ayɛ di dwuma ma kar ahorow ne nneɛma a wɔde yɛ adwuma. Nneɛma a ɛma kar no nsɛe a ɛkɔ soro no ma kar no tenten ne ahobammɔ tu mpɔn, bere a ade no a wɔde yɛ no ma wotumi yɛ nneɛma a ɛyɛ den.
Afiri a wɔde yɛ adwuma .
Mfiri te sɛ frigye, mfiri a wɔde horo nneɛma, ne fononoo nya mfaso fi dade a wɔde galvanized ayɛ a ɛyɛ den na ɛyɛ fɛ no mu. Nneɛma no ne nneɛma ahorow a ɛwɔ soro a wɔde wie ne nea wɔde kata so no hyia no ma ɛyɛ nea wotumi yɛ wɔ mfiri a wɔyɛ mu.
Guadi mu nsɛm ne daakye nsusuwii .
Nneɛma a wɔhwehwɛ fi dade nkrataa a wɔde galvanized ayɛ mu no kɔ so yɛ kɛse, a nkuropɔn mu nkɔso, nnwuma a wɔyɛ, ne nkɔso a aba wɔ mfiridwuma mu mfiridwuma mu no na ɛma ɛba.
Mfiridwuma mu Nneɛma Foforo .
Mfiridwuma a ɛrepue te sɛ galvanizing lines (CGL) a ɛkɔ so ne alloy coatings a ɛkɔ anim no rema nneɛma a wɔyɛ no yiye ne nneɛma a wɔyɛ no ayɛ kɛse. Nneɛma foforo a wɔyɛ no botae ne sɛ ɛbɛtew ahoɔden a wɔde di dwuma so, atew nneɛma a atwa yɛn ho ahyia so, na ama nneɛma a wɔde kata so no atu mpɔn.
Nneɛma a wɔde yɛ adwuma a ɛbɛkɔ so atra hɔ daa .
Nneyɛe a ɛtra hɔ daa wɔ galvanization mu no reyɛ nea ɛho hia, a wɔde wɔn adwene si mframa a wɔtow gu ne nneɛma a wɔsɛe no so a wɔbɛtew so. Nnwuma no rehwehwɛ nneɛma a atwa yɛn ho ahyia a ɛnyɛ adwuma, nneɛma a wotumi de di dwuma bio, ne nneɛma a ɛma ahoɔden a wɔde di dwuma yiye no ne wiase nyinaa botae ahorow a ɛfa nneɛma a ɛbɛkɔ so atra hɔ daa ho no hyia.
Nneyɛe pa a wɔyɛ ma adwumayɛbea ahorow, wɔn a wɔkyekyɛ nneɛma, ne wɔn a wɔtɔn nneɛma akɛse .
Wɔ wɔn a wɔde wɔn ho hyɛ galvanized steel sheet supply chain mu no fam no, nneyɛe pa a wobegye atom no hwɛ hu sɛ akansi mu mfaso ne adetɔfo akomatɔyam.
Quality assurance ne adansedi krataa .
Adansedie te sɛ ISO 9001 a wɔbɛnya ne amanaman ntam gyinapɛn a wɔbɛdi so no kyerɛ sɛ wɔde wɔn ho ama sɛ wɔbɛma nneɛma ayɛ papa. Nhwehwɛmu a wɔyɛ no daa ne nkɔso ho nneyɛe a ɛkɔ so daa no ma nneɛma a wɔyɛ no mu ahotoso yɛ kɛse.
Nneɛma a wɔde ma ho nhyehyɛe a etu mpɔn .
Nneɛma a wɔde asie a etu mpɔn a wɔde di dwuma ne nneɛma a wɔde kɔ baabiara ano aduru a wɔde di dwuma no ma ɛka a wɔbɔ no so tew na ɛhwɛ ma wɔde nneɛma no kɔ bere ano. Nkɔmmɔbɔ a wɔne wɔn a wɔde nneɛma ma ne wɔn a wɔtɔ nneɛma bom yɛ no ma nsɛm a wɔka no pefee ne mmuae a wɔde ma wɔ gua so ahwehwɛde ahorow ho no yɛ kɛse.
Adetɔfo nkyerɛkyerɛ ne mmoa .
Mfiridwuma ho mmoa ne nkyerɛkyerɛ a ɛfa dade nkrataa a wɔde galvanized ayɛ a wɔde di dwuma ne ne siesie ho no ma mfaso ba adetɔfo so. Nimdeɛ a wɔde kyɛ no ma abusuabɔ a ɛtra hɔ kyɛ no yɛ adwuma na ɛma nnwuma yɛ nnwuma akannifo.
Awie
Nneɛma a wɔyɛ wɔ galvanized steel sheets mu no yɛ nneɛma a wɔde yɛ nneɛma ho nyansahu, mfiridwuma, ne mfiridwuma ho nimdeɛ a ɛyɛ den. Wɔ adwumayɛbea ahorow, wɔn a wɔkyekyɛ nneɛma, ne wɔn a wɔtɔn nneɛma akɛse fam no, ntease a emu dɔ wɔ saa adeyɛ yi ho no ho hia na wɔde nneɛma a ɛne nnɛyi nneɛma a wɔde di dwuma no ahwehwɛde ahorow a emu yɛ den hyia ma. Bere a nnwuma no renya nkɔso no, nneɛma foforo ne nneyɛe pa a wɔbɛkɔ so atra ase no bɛyɛ nea ɛho hia kɛse na ama asi wɔn yiye.
Ɛdenam nkɔso a ɛba wɔ galvanization akwan, su pa a wɔhwɛ so, ne nea ɛbɛkɔ so atra hɔ daa mu so no, wɔn a wɔde wɔn ho hyɛ mu no betumi akɔ so de dade nkrataa a ɛyɛ papa a ɛma wonya nkɔso a ɛma wonya nkɔso wɔ nnwuma ahorow mu ma. Ahofama a ɛbɛma wɔayɛ adwuma yiye na wɔayɛ nsakrae wɔ nneɛma a ɛrekɔ so a ɛreba no mu no bɛkyerɛkyerɛ dade a wɔayɛ no galvanized a wɔyɛ no daakye ne ne dwumadi titiriw wɔ wiase nyinaa nkɔso mu.
