ASTM A179 Cov khoom lag luamtxias kos seamless carbon steel yeeb nkabFeem ntau yog siv nyob rau hauv ntau qhov chaw ntawm cov khoom siv hlau, feem ntau tom qab xeb ntawm steel daim rau hauv 440 ~ 460℃melting zinc tov, kom cov hlau nto txuas nrog zinc txheej, uas ua si lub hom phiaj preservative.Qhov no yog ib txoj kev zoo ntawm cov hlau corrosion, kev siv cov yam ntxwv tseem ceeb yog cov hauv qab no:

(1) ASTM A179 txias drawn seamless yeeb nkab manufacturers nrog tuab tuab tuab zinc txheej npog nyob rau hauv lub txias drawn seamless raj nto, nws muaj peev xwm zam txias drawn seamless raj matrix thiab kev sib cuag nrog cov tshuaj tiv thaiv corrosion los tiv thaiv cov hlau matrix los ntawm corrosion.Nyob rau hauv cov huab cua dav dav, qhov saum npoo ntawm zinc txheej los tsim ib txheej ntawm nyias thiab ntom zinc oxide nto, nws nyuaj rau yaj hauv dej, yog li cov hlau matrix plays lub luag haujlwm tiv thaiv.Yog hais tias zinc oxide thiab lwm yam khoom ntawm cov huab cua tsim insoluble zinc ntsev, cov nyhuv anti-corrosion yog xav tau ntau dua.

(2) Nrog hlau - zinc alloy txheej, ua ke nrog ntom ntom, thiab nrog cov cim tiv thaiv corrosion nyob rau hauv marine cua thiab atmospheric cua.

(3) ASTM A179 txias drawn seamless yeeb nkab nrog lub zog hnav tsis kam vim kev sib xyaw ntawm cov khoom, zinc - hlau miscible.

(4) Txij li zinc muaj qhov zoo ductility, nws cov txheej txheej alloy thiab steel puag txuas nrog cov khoom, yog li cov khoom kub dov tuaj yeem txias, dov, kos duab, khoov thiab lwm yam molding yam tsis muaj kev puas tsuaj rau txheej.

(5) Kub-dip galvanized structural steel yeeb nkab, qhov sib npaug ntawm kev kho annealing, tuaj yeem txhim kho cov cuab yeej ntawm cov hlau matrix kom tshem tawm cov hlau tsim vuam kev nyuaj siab, yog qhov zoo rau cov qauv hlau tig.

(6) Qhov saum npoo ntawm cov yeeb nkab txias seamless tom qab kub galvanized yog ci thiab zoo nkauj.

(7) Ntshiab zinc txheej yog txheej kub galvanized txheej ntawm galvanized txheej, nws qhov xwm txheej yog nyob ze rau cov zinc ntshiab, nrog ductility, yog li nws yog tag nrho ntawm yooj.