I ring thei a ni
galvanized steel sheet hmanga siam a ni a, corrosion dona atan. Zinc coating chak tak a nei a. Hot-dipped galvanization process hian venhimna layer a belhchhah a ni. He layer hi 0.025 mm leh 0.1 mm inkar a thuk a ni. A hnuaia table-ah hian a thickness chu i hmu thei ang:
Coating Thickness Range a ni |
Measurement Unit a ni |
0.025 mm a ni |
mm |
0.1 mm a ni |
mm |
Industry tam takah chuan galvanized steel hi a rei avangin an hmang thin. ASTM A123/A123M leh ASTM A653 ang chi standard an zawm a ni.
Key Takeaways te pawh a awm
Galvanized steel sheet hian zinc layer thuk tak a nei a. He layer hian tui leh boruakin steel a khawih loh nan a titawp a ni. Hei hian steel chu a rust loh nan a veng a ni.
Zinc hian steel chhanchhuah nan a inpe ta a ni. A rust hmasa avangin steel chu a chhiat loh nan a him.
Zinc layer a hrual chuan a insiamtha thei. A hnuaia steel awm chu a humhim zel a ni.
Steel hian eng chen nge a daih tih hi zinc coating thickness hi a pawimawh hle. Zinc thick zawk tih awmzia chu steel tan venhimna tha zawk tihna a ni.
Galvanized steel tihfai leh enfiah hian a nghet reng thei a ni. Fimkhur takin kum 50 chuang a daih thei.
Zinc Coating hmanga venhimna a ni
Barrier Effect a awm bawk
Galvanized steel sheet hian shield khauh tak a nei a. Zinc coating hian steel leh boruak inkar bang ang maiin hna a thawk a. He bang hian tui leh boruak chu thir atanga hla takah a dah a ni. Tui leh boruak hian thir a khawih theih loh chuan rust a awm lovang.
Zinc hi tui, boruak leh thir inkarah a ding a, chu chuan a venghim a ni.
Zinc hian steel tan shield a siam a, boruak, tui leh thil dangte a thlen loh nan a titawp a ni.
Shandong Sino Steel Co.,Ltd hian hot-dipped galvanization hmangin zinc layer thuk tak an siam a. He layer hian steel zawng zawng a khuh vek a ni. Steel chu rust do turin a pui a, hmun harsaah pawh rei zawk a daih bawk.
Scientist-te chuan zinc coatings hian steel a veng tha em tih an enfiah a. A hnuaia table-ah hian coating hrang hrang hnathawh dan tarlan a ni:
Coating chi hrang hrang |
Impedance hlutna (Ω·cm²) a ni. |
Enfiahna hrang hrang |
85ZRE a ni |
15,000 a ni |
Cathodic protection tha tak leh hun kal zelah impedance nghet tak a nei bawk. |
75ZRE a ni |
1,123,000 (2d) atanga 192,100 (60d) thleng a ni. |
Impedance a tlahniam nasa hle a, barrier chak lo tak a lantir. |
65ZRE a ni |
Impedance a tlahniam zel |
Blistering leh barrier chak lo laka invenna a tam lo. |
Impedance value lian zawk chuan venhimna chak zawk tihna a ni. Zinc layer tha tak hian steel hi rei tak chhung a him tih i hmu thei.
Inthawina Action
Zinc hian tui leh boruak a tikhawlo mai ni lovin thil dang a ti thei a ni. Steel pawh a inpek hmasak avangin a venghim bawk. Metal pahnih, zinc leh steel ang chi an khawih chuan pakhat chu a dang hmain a rust ang. Zinc hi steel aiin a noble lo zawk a, chuvangin a rust hmasa ber. Hei hi galvanic corrosion an ti a.
Galvanic corrosion hi metal hrang hrang pahnih inkara electric current a kal hian a thleng thin. Anodic zawk metal chu a rust rang zawk ang a, metal dang erawh chu a him reng thung. Zinc hi steel aiin anodic zawk a nih avangin tuifinriat tui ang chi thil a khawih hian a rust hmasa ber a, steel chu rust lakah a him lo.
Hei hi an standard reduction potential-ah hian i hmu thei ang:
Thir |
Standard tihtlem theihna (V) 1.1. |
Zinc a ni |
-0.76 |
Thir |
-0.44 |
Zinc hian iron aiin reduction potential a nei tlem zawk.
Hei hian iron a rust hmain zinc a rust tihna a ni.
Zinc a rust hian iron a rust loh nan a veng thin.
Galvanized steel sheet-a zinc layer hian steel hi a him theih nan a inpe a ni. Hei vang hian miten pawnah leh thil siam nan galvanized steel an hmang thin.
Mahni intidam
A châng chuan, zinc layer chu a hrual emaw, a chip emaw ṭhin. Rust hi a intan nghal mai ang tih i ring mai thei. Mahse galvanized steel hian a tidam thei. Zinc layer a chhiat chuan zinc hian a hnuaia steel chu a la humhim reng a ni.
Evidence sawifiahna |
Thil Hmuhchhuah Pawimawh |
Cathodic hmanga zinc humhalhna |
Zinc hian anode angin hna a thawk a, coating a chhiat hunah steel humhim turin a inpe thin. |
Protection distance sang ber |
Zinc hian steel chu 1/4' (7 mm) aia tlem a hlaah a veng thei a, mahse hei hi a scratch a lian deuh deuh chuan a tlahniam thin. |
Surface activity influence a ni |
Zinc hi a active zawk chuan a veng hla zawk. Zinc hi passive a nih chuan a veng tam lo. |
Hot-dip galvanized steel-ah chuan zinc leh steel te hi an inzawm tha hle.
Zinc layer a chhiat a, tui a awm chuan galvanic cell a lo piang ta a ni. Zinc chu anode a lo ni a, steel a humhim bawk.
A tirah chuan steel-ah hian rust tlem a lang thei a, mahse rei lo teah zinc chuan steel humhimtu layer thar a siam ta a ni. Hei hi ‘self-healing’ an ti a.
He self-healing hian galvanized steel sheet chu a tichak a, a hrual pawh nise, rust lakah a him bawk. Galvanized steel hi a invenna tur leh hmun tam takah rei tak a daih theih nan i ring thei a ni.
Corrosion Resistance nghawng thei thil
Chenna khawvel
Galvanized steel i hmanna tur hmun ngaihtuah a pawimawh. I hmun thlan hian zinc coating chu a daih rei thei a, a chhe rang thei bawk. Hmun thenkhatah chuan tui, chi, a nih loh leh boruak bawlhhlawh a tam zawk. Heng thilte hian zinc layer chu a ti chhe thuai thei a ni.
Hetah hian boruak chhunga thil hrang hrangin galvanized steel a nghawng dan tarlanna table kan rawn tarlang e:
Environment lam thil a ni |
Hrilhfiahna |
Salt Exposure a awm |
Steel chungah tui nen chi (salt on steel) hian mix a siam a, chu chuan zinc coating chu a ti chhe rang zawk a ni. |
Industrial leh Atmospheric Pollutants te hi a ni |
Thli bawlhhlawh gas leh tui awmna chuan acid a siam a, chu chuan zinc layer a ti na a ni. |
Humidity leh Moisture te a awm |
Thli hnim hian steel-ah tui a vawng reng a, hei hian thil rust siamtute a pui a, zinc layer chu a chhe nghal vat bawk. |
Salt spray awmna hmun |
Tuipui bula building emaw, chi awmna kawngpui emaw chu a rust rang thei hle. |
Industrial atanga chhuak gas te |
Factory bula steel chu gas tha lo takin a nuai a, chu chuan rust a ti chak hle. |
Acid ruah sur avanga awm |
Acid ruah tam tak chuan steel-a zinc layer chu a silfai thei a ni. |
Tuipui hnaihah galvanized steel sheet i hman chuan chi leh thli hian coating chu a chhe rang thei hle. Entirnan, hot-dip galvanized steel hian tuifinriat bulah hna a thawk tha hle a, mahse eng chen nge a daih tih erawh a hmunah a innghat. Tuipui atanga mel khat aia hla lovah building i dah chuan tuifinriat spray-in a tlak chuan kum 5 atanga kum 7 chhungin a rust tan mai thei. Cover awmna hmunah i dah chuan kum 15 atanga kum 25 chhung a daih thei. Thli, khaw lum leh tuifinriat i hnaih dan te hi rust a do that danah a pawimawh vek a ni.
Coating Thickness a ni
Zinc coating hi engtiang chiahin nge a thick tih hian i galvanized steel hi eng chen nge a daih tih ah danglamna nasa tak a siam a ni. Coating thick zawk hian venhimna a pe tam zawk a, rei zawk a awm theih nan a pui bawk. Coating hi engtiang chiahin nge a thick tih chu ASTM A653 emaw EN 10346 ang chi standard enin i en thei ang.
Hetah hian coating thickness-in steel a daih rei dan a thlak danglam dan table a awm a:
Coating Thickness a ni |
Rawngbawlna Hun Beisei (Kum) 1.1. |
Environment dinhmun |
Thinner Coatings te pawh a awm |
50-75 thleng a ni |
Hmun hrang hrangah |
Coatings thick zawk a awm |
75 chuang an ni |
Hmun harsa zawkah |
International rules chuan steel dik tak i thlan theih nan coating hi engtiang chiahin nge a thick tur tih a sawi a:
Nihphung pangngai |
Coating chi hrang hrang |
Coating Thickness tlem ber (g/m²) a ni. |
ASTM A653 a ni |
G90 a ni |
275 |
EN 10346 ah a awm |
Z |
100-600 inkar a ni |
Coating chi hrang hrang chu Z, ZF, ZA, AZ, leh AS te an ni.
Coating weight hniam ber chu 100 atanga 600 g/m².
Steel gauge leh grade pawh i enfiah tur a ni. SPCC leh SGCC ang grade-te hian dan khauh tak an zawm a ni. Steel thick zawk leh coating rit zawk hian steel hian rust a do tha zawk a, a bik takin hmun khauh takah a pui thin.
Enkawlna
I galvanized steel hi i enkawl chuan rei zawk daih turin i pui thei ang. I steel tihfai leh enfiah hian zinc coating chu a tichak reng a ni. Bawlhhlawh leh chi i silfai chuan zinc a tihnat loh nan i titawp thin. I steel check hian scratch emaw damage emaw i hmu hmasa thei a, chuvangin rust a tan hmain i siam tha thei a ni.
Tip: I galvanized steel i tihfai leh i check fo chuan kum 50 chuang a daih thei.
I tih theih tur step awlsam thenkhat chu hetiang hi a ni:
Tifai fo: Bawlhhlawh, chi leh thil dang thir-a innghat chu silfai thin ang che.
Visual Inspections: Coating awm lohna hmunah chuan white rust, scratches, emaw spots emaw zawng rawh.
A hun taka siamthat: Rust a darh loh nan chhiatna eng pawh siamthat vat rawh.
I galvanized steel i enkawl loh chuan heng ang harsatna hi i hmu mai thei:
Tui a tlakbuak chuan steel hnuaiah rust rawh.
Tuipui bula tui hnim atanga rust.
Cut edge-ah rust la, i seal loh chuan.
Metal hrang hrangin an khawih chuan rust a intan hma thin.
Grade dik tak i thlan a, dan zawm a, fimkhur taka i zawm chuan heng harsatnate hi i titawp thei a ni. Chutiang chuan i galvanized steel chu a nghet a, a him a, kum tam tak chhung chu rust a do reng bawk.
Galvanized Steel Sheet a chhe thei lo
Nun chhung zawng
Galvanized steel sheet hian rei tak a daih thei. Eng chen nge a daih tih chu i hmanna hmunah a innghat. Thingtlang lamah chuan kum 100 thleng a daih thei. Khawpuiah chuan boruak bawlhhlawh a tam zawk avangin chutiang chuan a daih lo. Tuipui bulah i hman chuan boruak chi (salty air) hian a ti chhe rang zawk thin. Mahse kum tam tak chhung chu steel a la humhim reng a ni.
Environment chi hrang hrang |
Dam chhung (Kum) 1.1. |
Thingtlang |
100 thleng a ni |
Khawpui |
Tlem Tlem a tihhniam |
Tropical Marine-a awm a ni |
75 atanga 78 thleng a ni |
Marine a ni a, a lum hle |
78 atanga 90 thleng a ni |
I steel-ah harsatna a awm leh awm loh i enfiah tur a ni. White rust hi steel-a powder dum ang mai a ni. Hei hi steel chu a hnim rei lutuk chuan a thleng thin. Thil dahkhawmna ha lo emaw, tui a tlakbuak emaw pawh hian harsatna a thlen thei bawk. I steel check hian heng harsatnate hi a hmain i hmuchhuak fo thin.
Dilna hrang hrang
Galvanized steel hi thil tam takah hman a ni. In saktute chuan inchung, gutter leh bang atan an hmang thin. Frame leh ductwork atan pawh hman a ni. Car siamtute chuan car body leh shield atan an hmang thin. Loneitute chuan bin, silo, leh fence siam nan an hmang thin. HVAC system te hian air duct leh cover atan an hmang thin. Fridge, washing machine, office furniture-ah pawh i hmu thei bawk.
A sak dan: inchung, cladding, structural framing, ductwork te siam a ni
Automotive: taksa panel, shield, reinforcement parts te a awm bawk
Agriculture: thil dahkhawmna hmun, silo, fencing
HVAC: boruak kalna kawng, in sakna
Thil hmanrua: refrigerator, washing machine, office bungrua te
Mite chuan galvanized steel hi an duh ber a, a chhan chu a chak a, hman a awlsam bawk. I weld thei a, mahse i fimkhur a ngai. Thli thianghlim awmna hmunah hna thawk fo la, himna dan zawm rawh. Zinc coating hian i weld dan a thlak danglam thei a, chuvangin tih dan bik i mamawh mai thei.
Longevity tihpun (Maximizing Longevity) a ni
I galvanized steel chu a rei zawk theih nan thil awlsam tak tak i tih hmangin i pui thei ang:
Hmun harsa tak takah chuan hot-dip galvanized steel, coating thuk tak nei thlang rawh.
Sheet te hi hman hmain lei atanga hmun vawt leh fai takah dah la.
Rust tihtawp nan galvanized emaw stainless steel fastener hmang la.
Scratch emaw coating chhiatna emaw chu zinc tamna paint hmangin siamthat nghal rawh.
Galvanized steel chu copper leh plain carbon steel atanga hla takah dah tur a ni.
Bawlhhlawh leh chi chu sahbawn nem tak leh tui hmangin silfai thin ang che.
Kum tin i steel kha check la, chhiatna i hmuh apiang siamthat rawh.
Tip: I galvanized steel i tihfai leh i siam that fo chuan kum tam tak chhung chu a nghet reng ang.
Rust tihtawp nan galvanized steel sheet i ring thei. Zinc coating chu steel-ah a innghat nghet hle. Tui, chi leh boruak bawlhhlawh a chhuah loh nan.
A pawimawh ber |
Hrilhfiahna |
Corrosion Resistance tihchak a ni |
Zinc finish hian steel chu a daih rei zawk a, rust a titawp bawk. |
Adhesion chak tak a ni |
Zinc hi a stick tha hle a, chuvang chuan a peel off lo. |
Environment laka invenna |
Zinc layer hian tui, chi leh boruak bawlhhlawh a tikhawlo a ni. |
Galvanized steel i hman hian hengte hi hre reng ang che:
I hnathawh tur atana standard leh thickness dik tak thlang rawh.
Zinc coating thick zawk hian a veng tha zawk.
I steel kha kum 50 aia rei a daih theih nan enfiah fo la, tifai fo bawk ang che.
FAQ
Galvanized steel hian rust a do theih chhan ber chu eng nge ni?
Zinc coating hian steel chu rust lakah a venghim a ni. Tui leh boruak hlat thei tur barrier chak tak i hmu a. Zinc hian a hnuaia steel awm chu chhanchhuah tumin a inhlan bawk.
Engtin nge eng gauge emaw grade emaw i thlan tur tih i hriat theih ang?
I project mamawh zat i enfiah tur a ni. Gauge thicker zawk hi hna rit tak tak tan chuan a thawk tha ber. SPCC leh SGCC ang grade te hian standard khauh tak an zawm a ni. I supplier hnenah thurawn i dil thei bawk.
Galvanized steel sheet te hi awlsam takin i weld thei em?
Galvanized steel sheet te chu i weld thei bawk. Zinc coating hian meikhu a siam thei. Thli tleh theihna hmunah hna thawk fo ang che. I inven nan safety gear hmang rawh.
Galvanized steel hi eng chen nge pawnah a awm?
Galvanized steel hi hmun vawt takah kum 50 chuang a daih thei. Tuipui kam emaw, bawlhhlawh awmna hmunah emaw chuan a chhe tawh tih hriatna i hmu thuai mai thei. Tifai fo hian a dam chhung a ti rei thei a ni.
Galvanized steel hian eng maintenance nge a mamawh?
Bawlhhlawh leh chi chu sahbawn leh tui nem tak hmangin i silfai tur a ni. Kum tin scratch emaw chhiatna emaw enfiah thin ang che. Repairs rang tak chuan i steel chu a nghet a, a rust lo bawk.
