Ɔdan atifi krataa a wɔde ayɛ corrugated .

Corrugated roof sheet yɛ krataa a wɔde kɔla ayɛ-a wɔde dade akata so a wɔabobɔw na ayɛ nwini-abɔ mu ayɛ no corrugated nsusuwii ahorow. Saa krataa yi ka ahoɔfɛ ne corrosion resistance a ɛwɔ kɔla-dadeɛ krataa a wɔde akata so no ne corrugated sheet ahoɔden no bom, na wɔde di dwuma kɛseɛ wɔ dan atifi, afasuo, dan mu ne abɔnten asiesie ne mfuo foforɔ mu.

1. Nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma (a nneɛma ahorow a wɔde yɛ adwuma ne nneɛma a ɛboa a wɔbɛtɔ ka ho):

(1) base material - awɔw-dadeɛ a wɔabɔ no apete;

(2) Coating - aluminium-zinc alloy anaa tin a wɔde anyinam ahoɔden ayɛ-kɔbere-Chromium dade krataa/dade a ɛnyɛ den a wɔde yɛ aduru a wɔde yɛ nsu a ɛwɔ soro + PVC film;

(3) Nkataso - epoxy resin primer + acrylic topcoat;

(4) aduru a wɔde yɛ aduru - epoxy a wɔde hyɛ mu / polyurethane adhesive ne solvent.

2. Preforming → Thermoforming → Mfoniniyɛ → Nhwehwɛmu → Nneɛma a wɔde kyekyere nneɛma → Nneɛma a wɔde sie.

Wɔde dadeɛ dan atifi di dwuma kɛseɛ wɔ mfiridwuma ne aguadiɛ adan mu ɛnam sɛ ɛyɛ den na ɛtumi tɔ nti, nanso ɛhia sɛ wɔsiesie no daa na ama wɔatumi ayɛ adwuma tenten-bere a wɔde yɛ adwuma. Nea edidi so yi yɛ nneɛma atitiriw a ɛsɛ sɛ wosusuw ho wɔ dade dan atifi a wosiesie ho:

Ahotew ne nhwehwɛmu a wɔyɛ daa .

Ahotew a wɔyɛ no daa:

Anyɛ yiye koraa no, hwɛ ɔdan no atifi pɛnkoro bere biara na ama wɔayi nhaban, mfutuma, ne nneɛma afoforo a asɛe afi hɔ.

Fa sodium hypochlorite aduru a ɛyɛ 5% hohoro ɔdan no atifi, ma ɛntra hɔ simma 20, afei fa hose hohoro mu.

Hohoro nsu a ɛkɔ nsu no mu no ho daa (anyɛ yiye koraa no mprɛnsa afe biara) na amma asiw kwan na nsu anboaboa ano.

Ahobammɔ ho nhwehwɛmu:

Hwɛ nsɛntitiriw abiɛsa a ɛne ne ho di nkitaho (anyɛ yiye koraa no nsa biako ne nan abien no nyinaa) so bere a wowɔ antweri so no.

Gyina hɔ bɛn metal studs na ama woatumi agyina pintinn bere a wonam no, na fa obi a onim adwuma yiye sɛ ɛho hia a.

Nneɛma a atwa yɛn ho ahyia ho nhyehyɛe a atwa ho ahyia:

Mowing the roof Remove branches near the roof to prevent leaf accumulation and algae growth. Keep trees and shrubs a sufficient distance from the roof (>3m for trees and >1.5m ma nnua).

ii. Anti-nsiesiei a wɔde siesie .

Rust ayaresa:

Fa rust spots di dwuma wɔ nnɔnhwerew 24 akyi bere a woahu no na amma rust battery no atumi ayɛ adwuma.

Nkate nketenkete ( .<30% area): High-pressure clean, then sand. Apply an anti-rust primer (such as epoxy zinc yellow) and two coats of fluorocarbon topcoat.

Rust a ɛyɛ mmerɛw (30%-50%): susuw ho sɛ wode besi ananmu fã bi. Wɔkamfo kyerɛ sɛ wɔmfa nsi ananmu ntɛm ara wɔ mmeae a wɔkora nneɛma a ɛsom bo ho.

Severe rust (>50% anaa deformation): Nea edi mũ a wɔde besi ananmu ho hia. Wɔkamfo kyerɛ sɛ wɔmfa biribi nsi so. Aluminium-zinc krataa (nkwa nna a wɔatrɛw mu mfe 8-10) .

Nneɛma a ɛbɔ ho ban wɔ corrosion ho: .

Mpoano nneɛma a atwa yɛn ho ahyia a ɛwɔ nsɛe kɛse: Hwɛ sɛnea sini no mu yɛ den mfe abiɛsa biara. Sɛ adehwere boro 30% a, yɛ local recoating.

Nneɛma a atwa yɛn ho ahyia wɔ asase mu: Wobetumi atrɛw nhwehwɛmu no mu akɔ mfe anum.

Overall renovation cycle: mfe 8-10 (a wɔayɛ no foforo a egyina tebea horow a ɛyɛ nsɛe ankasa so).

Nneɛma a wɔde bɔ corrosion ho ban a wɔpaw:

Fa composite coating system a ɛyɛ epoxy zinc-primer a ɛyɛ fɛ (zinc a ɛwɔ mu no dɔɔso sen anaasɛ ɛne 80%) + polyurethane topcoat yɛ pɛ di dwuma. Sandblast to SA 2.5, roughness 40-70μm, ne nyinaa a ɛyɛ dry film no mu duru boro anaasɛ ɛne 250μm yɛ pɛ.

iii. Structural stability nsiesie .

Weld Point Nhwehwɛmu:

Fa infrared thermal imaging technology di dwuma na ama woahu weld sintɔ ahorow no ntɛmntɛm, na ama nhwehwɛmu a wɔyɛ no yiye no akɔ soro 300%.

Ultrasonic sintɔ ahorow a wɔde hu nneɛma no tumi hyɛn dade mprɛte a ne kɛse yɛ 50mm mu ma wohu mpaapaemu a ɛwɔ mu a mfomso a ɛwɔ mu no yɛ .<0.5%.

Fa w’adwene si k-groove welds a wɔde ahyɛ adesoa a ɛsesa so na ama woatumi akɔ mu koraa.

Deformation Monitoring:

Fa total station di dwuma fa susuw displacement wɔ key nodes ansa na osutɔ bere adu afe biara.

Sɛ ɛyɛ kɛseɛ-span dadeɛ nhyehyɛeɛ a, hwɛ nsɛntitiriw baako so 20m biara a ɛyɛ pɛpɛɛpɛ ±3mm.

Mid-span deflection a ɛwɔ steel crane beams mu no yɛ L/600 (L=span). Deflection biara a ɛboro anohyeto yi so no hwehwɛ sɛ wɔhyɛ no den.

Connector nhwehwɛmu:

Torque susuw mfe abiɛsa biara. Fa wrench hwɛ bolt joints, hwɛ pre-tightening torque tolerance so wɔ ±10% mu.

Fa magnetic flaw detector di dwuma de hu microcracks, ne infrared thermal imager a ɛbɛma woahu bridge a ɛyɛ nwini a ɛretu.

iv. Nsuo a ɛtumi siw ano nhyehyɛeɛ a wɔhwɛ so .

Nkwaa a wɔde sa yare:

Hwɛ ridge, eaves, ne screw joints no mu hwɛ sɛ ɛwɔ gaps ne rust anaa.

Yi sealant biara a asɛe no na fa silicone a ɛnyɛ adwuma anaa polyurethane sealant a ɛwɔ afã biara no san hyɛ mu bio.

Gutter joint treatment: Sɛ wosiesie wie a, fa nano-rust remover gu so, afei fa nsuo a ɛtumi siw ano soronko bi gu so na fa polyester sheeting kata so.

Sealant a wɔde besi ananmu ho nhyehyɛe:

Hwɛ sɛnea kɔla no hyia-dade mprɛte a wɔakata so ne nsu a ɛkɔ nsu no anim, nsu a ɛkɔ nsu no mu, ne mmeae afoforo a ɛbɛma mpaapaemu aba.

Hohoro ho yiye. Yi mfitiase sealant no na fa semɛnte aduru anaa asphalt sealant a wɔayɛ no foforo no hyɛ mu.

Sɛ wode sealant foforo no gu so wie a, fa butyl tape a ɛtrɛw 250mm gu so na ama seal no ayɛ kɛse.

Nsuo a Ɛntumi Nkɔ Mu Nneɛma a Wɔpaw:

Neutral silicone adhesive: mfe 15-20 a wim tebea gyina ano, ahoɔden a ɛtwetwe kɛse sen 2.5MPa, a ɛfata ma ɔhyew a ɛwɔ 40-150℃ntam .

Polyurethane adhesive: elastic a ɛyɛ fɛ a ɛma wotumi nya ahoɔden, elongation wɔ break up to 400%, a ɛfata ma nkwaa a ɛyɛ nnam.

Butyl tape: adhesion a ɛba ntɛm ara, mfe 5-8 a wim tebea gyina ano, a ɛfata ma nnadewa tokuru a wɔde hyɛ mu.

V. Wim tebea a ɛyɛ hu a wɔde siw ano .

Ahum a ɛbɔ ho ban: .

Fa ɔdan atifi kwan a ntease wom na hyɛ ɔdan a ɛboa no mu den.

Install wind{0}}a ɛko tia clips anaasɛ buckles na ama asiane a ɛwɔ hɔ sɛ mframa bɛba{1}}induced lift-off no so atew.

Fa anchor points ka ho wɔ soro-asiane mmeae te sɛ ɔdan atifi panel ntwea ne eaves.

Hwɛ na hyɛ nneɛma a ɛkɔ mu te sɛ afiri a wɔde yi mframa fi mu ne wim ahwehwɛ mu den ansa na ahum kɛse bi aba.

Sukyerɛmma mu ahosiesie a wɔasiesie:

Ntɛm ara yiyi sukyerɛmma a ɛboaboa ano a ɛboro 30 cm (load warning threshold).

Hwɛ dadeɛ nhyehyɛeɛ mu hwɛ sɛ ɛyɛ nkannare na fa anti{0}}rust gyinaesie a ɛyɛ ne berɛ mu de di dwuma anaa.

Long-Span structures hwehwɛ sɛ wɔhwɛ mu yiye na woyi sukyerɛmma fi hɔ ntɛm.

After a snowstorm, inspect structural deformation, especially the verticality of steel columns (deviations >3‰ hwehwɛ sɛ wosiesie).

VI. Adwumayɛfo a wɔyɛ adwuma wɔ hɔ ho nyansahyɛ ahorow .

Wɔ-nhwehwɛmu a emu dɔ mu:

Yɛ adwumayɛfo nhwehwɛmu mfe 5 biara. Wɔ-depth maintenance no mu no, structure inspections, material performance testing, ne system functionality testing ka ho.

Siesie ɛka ho nsusuwii:

Ɛka a wɔbɔ wɔ nneɛma a wosiesie no mpɛn pii wɔ afe anum mu no nyinaa ho no, mpɛn pii no, ɛyɛ nea wɔde si ananmu tẽẽ no mmɔho 1.7. Sɛ wopɛ sɛ wode nkannare a ɛkɔ fam anaasɛ emu yɛ den a, wɔkamfo kyerɛ sɛ wɔmfa sikasɛm mu mfaso a ɛwɔ sɛ wɔde si ananmu no hwɛ sen sɛ wobesiesie.

Ɔdansi no mu nneɛma pa a wɔhwɛ so:

Hwɛ yiye wɔ "cheap repair" traps ho: Low-quality self-Kaping screws no bɛyɛ rust a wontumi nkwati na ɛto mu wɔ mfe abien ntam. Kwati "nsuo mu nkatasoɔ" nsisi: Polyurethane a wɔde kata so 90% bɛ chalk wɔ bosome 18 akyi.

Sɛ wodi atifi hɔ akwankyerɛ a ɛwɔ atifi hɔ no akyi a, wobetumi atrɛw dade dan atifi nkwa nna mu kɛse bere a ɛtew asiane a ɛne sɛ nneɛma bɛsɛe mpofirim no so no. Wɔkamfo kyerɛ sɛ wɔnyɛ nsiesie ho kyerɛwtohɔ a ɛkɔ akyiri, na kyerɛw nhwehwɛmu ne adeyɛ biara a wɔbɛyɛ de ama nsɛm a wɔde bɛyɛ nsiesie a edi hɔ no.