N'oge ntinye na ntinye nke ikpo okwu nhazi nke galvanized steel grating, a na-ezutekarị na pipeline ma ọ bụ akụrụngwa kwesịrị ịgafe site naígwè gratingikpo okwu kwụ ọtọ. Iji mee ka ngwá ọrụ pipeline nwee ike ịgafe n'elu ikpo okwu nke ọma, ọ na-adịkarị mkpa iji chọpụta ebe na nha nke oghere n'oge usoro nhazi, na onye na-emepụta ígwè na-emepụta ihe ga-emepụta mmepụta ahaziri iche. Usoro nke mmepụta ahaziri ahazi na mbụ chọrọ ọtụtụ nkwurịta okwu na mgbanwe ozi n'etiti ngalaba nhazi ihe nchara na ngalaba nhazi nhazi ígwè, ndị na-enye ngwá ọrụ na ngalaba nyocha na nkewa. N'ihi ọtụtụ ihe ndị metụtara ya, enwere ụfọdụ ejighị n'aka na nha na ọnọdụ nke akụrụngwa dị ugbu a. N'oge echichi, ọ na-abụkarị na oghere ndị ahaziri ahazi enweghị ike izute mkpa saịtị ahụ. N'ihi ọnọdụ a, iji hụ na mkpụrụ ego nke ígwè gratings na melite imewe na mmepụta arụmọrụ nke ígwè gratings, na nke ugbu a imewe na mmepụta usoro, n'ozuzu na-ekwu okwu, ụfọdụ oghere na nta diameters ndị siri ike ikpebi na-adịghị ahaziri na hazie, ma na-edochi na nke abụọ nhazi usoro dị ka on-site oghere, ịcha, ịgbado ọkụ, na-egweri dị ka na nke ugbu a ọnọdụ nke nchara n'oge nrụnye nchara.
Dị ka ihe ọhụrụ, galvanized ígwè grating na-esiwanye n'ọtụtụ ebe. Galvanizing aghọwo ụzọ dị mkpa na-egbochi corrosion maka grating ígwè, ọ bụghị nanị n'ihi na zinc nwere ike ịmepụta oyi akwa mkpuchi n'elu ígwè, kamakwa n'ihi na zinc nwere mmetụta nchebe cathodic. Mgbe a na-ebufe grating ígwè galvanized na saịtị ahụ, a na-achọ nhazi nke abụọ na ịgbado ọkụ mgbe ụfọdụ maka ntinye. Ọnụnọ nke oyi akwa zinc na-eweta ụfọdụ ihe isi ike na ịgbado ọkụ nke galvanized ígwè grating.
Nyocha nke weldability nke galvanized ígwè gratings
A na-eji akwa zinc metal kpuchie ihe nkedo nke galvanized n'elu nchara nchara iji gbochie mmebi n'elu nchara nchara na ịgbatị ndụ ọrụ ya. Elu nke galvanized ígwè grating ga-adị ka ifuru. Dị ka usoro mmepụta na nhazi si dị, enwere ike kewaa ya n'ime ụdị ndị a: ① mpempe akwụkwọ galvanized na-ekpo ọkụ; ② electrogalvanized ígwè mpempe akwụkwọ. The agbaze ebe nke zinc bụ 419 ℃ na esi ebe bụ 907 ℃, nke dị nnọọ ala karịa agbaze ebe nke ígwè, 1500 ℃. Ya mere, n'oge usoro ịgbado ọkụ, galvanized oyi akwa na-ebu ụzọ agbaze ihe nne na nna. Mgbe nyocha nke dị n'elu, ihe eji arụ ọrụ na nke anụ ahụ nke akwụkwọ galvanized bụ otu ihe ahụ nke akwụkwọ mpempe akwụkwọ carbon nkịtị. Naanị ihe dị iche bụ na enwere mkpuchi zinc n'elu grating ígwè galvanized. Usoro ịgbado ọkụ nke galvanized ígwè grating
(1) Ngwa ịgbado ọkụ n'aka
Iji belata welding anwụrụ ọkụ ma gbochie ọgbọ nke ịgbado ọkụ cracks na pores, zinc oyi akwa nso uzo kwesịrị ewepụ tupu ịgbado ọkụ. Usoro mwepụ nwere ike ịbụ ịsa ọkụ ma ọ bụ ịgba aja. Ụkpụrụ nke ịhọrọ welding mkpara bụ na n'ibu Njirimara nke weld metal kwesịrị ịdị nso dị ka o kwere omume nne na nna ihe, na silicon ọdịnaya na kwa ụbọchị ịgbado ọkụ mkpanaka mgbado ọkụ metal a wụrụ n'okpuru 0,2%. N'ihi na obere-carbon ígwè mirror zinc ígwè grating, J421/422 ma ọ bụ J423 ịgbado ọkụ mkpara kwesịrị mbụ. Mgbe ị na-agbado ọkụ, gbalịa iji arc dị mkpụmkpụ ma ghara ịgbanye arc iji gbochie mgbasawanye nke ebe a wụrụ awụ nke akwa galvanized, hụ na nguzogide corrosion nke workpiece ma belata ọnụ ọgụgụ anwụrụ ọkụ.
(2) Mgbado ọkụ igwe
Jiri ịgbado ọkụ CO2 gas kpuchie ma ọ bụ ịgbado ọkụ agwakọta gas dị ka Ar+CO2, Ar+02 maka ịgbado ọkụ. Ihe mkpuchi gas nwere mmetụta dị ukwuu na ọdịnaya Zn na weld. Mgbe ejiri CO2 ma ọ bụ CO2 + 02 dị ọcha, ọdịnaya Zn dị na weld dị elu, ebe mgbe Ar + CO2 ma ọ bụ Ar + 02 na-eji, ọdịnaya Zn dị na weld dị ala. Ihe dị ugbu a nwere mmetụta dị nta na ọdịnaya Zn na weld. Ka ịgbado ọkụ ugbu a na-abawanye, ọdịnaya Zn na weld na-ebelata ntakịrị. Mgbe ị na-eji gas na-agbado ọkụ iji weld galvanized steel grating, uzuzu ịgbado ọkụ dị nnọọ ukwuu karịa nke ịgbado ọkụ nke akwụkwọ ntuziaka, ya mere, ekwesịrị itinye nlebara anya pụrụ iche na ikpochapu. Ihe ndị na-emetụta ọnụọgụ na nhazi nke uzuzu bụ tumadi ugbu a na gas na-echebe. Ka nnukwu ihe dị ugbu a, ma ọ bụ ka ọdịnaya CO2 ma ọ bụ O2 dị na gas na-echebe, ka uzuzu ịgbado ọkụ ka ukwuu, na ọdịnaya ZnO dị na uzuzu na-abawanye. Ọdịnaya ZnO kachasị elu nwere ike iru ihe dịka 70%. N'okpuru otu nkọwa ịgbado ọkụ ahụ, omimi ntinye nke galvanized steel grating dị ukwuu karịa nke nchara nchara na-abụghị nke galvanized.
Oge nzipu: Ọgọst-16-2024