Ibhothambo lezinkulungwane zokusebenza ngokwezinkulungwane zokugcina izilwanyana ezinkulu, elibhaliwe ngokuzimisa

Kungani ibhothambo lezinkulungwane zokusebenza ngokwezinkulungwane zokugcina izilwanyana ezinkulu libhekene ngokuphelele kumasebe okugcina izilwanyana ezinkulu

Amathuba amaningi: ukukhathazeka kwemithi, isivinini sokugcina izilwanyana, nokubaluleka kwezinsuku eziningi

Izibhodi zezinkabi zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokusebenza zokubeka kwezinsuku zokuse......

Ukulinganisa Amasitandare Emphakathi: ASTM A653 (SS340, G90) vs. EN 10346 (S550GD+Z)

Isteel ya-ASTM A653 SS340 enenakho ukuthi yisilika se-zinc se-G90 isikhombisa ukuthi yisifundo esihle nokuthi inemiphumela emithile emhlophe kusukela ku-340 MPa. Lokhu kuyenza ukuthi iyisifundo esihle kakhulu kubizo labo abanquma amathuba okubendisa nokufaka, njengokwakha iziqu zezibalo zokuhambisa. Ngaphakathi kwesinye isikhathi, i-EN 10346's S550GD+Z yadluliswe ngokuphelele ukusebenza kubizo obuncane. Njengoba inemiphumela yokuqala yokubuka kusukela ku-550 MPa, leli qembu libhekana nempilo yezindawo eziphakeme kunezinye izinhlobo. Sibona ukuthi isebenziswa kakhulu kubizo obuncane njengamathuba okwakha iziqu zezibalo zokuhambisa ezimbalwa kanye neziqu zokubeka izicelo zokuhamba kwezinye izindawo. Izivivinyo ezisodwa ngokwesibonelo zasibonisa ukuthi i-S550GD+Z isinake ukuthi ibhekane nezinkambo ezingu-30 percent kusha ngaphambi kokubonwa kwezinkambo zokugcina ukuthi zingabona. Nakuba ukuthi kunezinhlobo zokubhala kuzo kuyenza ukuthi abazalisi bafanele ukuthi bafunde izindlela ezithile, abazalisi abasebenzisa lomkhosi olunye bafanele ukuthi baze bakhumbule ukuthi izilika zezinc zabo zizokhanya kakhulu kusukela ku-5,200 psi ngokwesivivinyo se-ASTM D3359. Lokhu kuyenza ukuthi lokho okubhekana nokuthi lezi zinhlobo ziyinikeza umkhondo wokubhekana nokuthi ziyinikeza ukuthi zikhubuke kakhulu kusukela kwezinkambo zokugcina.

Amazwi okwenziwa :

• Izistatistikhi zeminyaka yokuqala ezitholakala kubizikazi bezinkokhelo zokuphatha (2023)
• Ukulinganisa kwezinhlobo zokusebenza kusukela kumaphepha otholakala kwezikhundla zokuziphatha

Ukuvikela kwezinkokhelo kuyaphakamisa ukuthi isikhundla sivumelane: Ukulwandela nokuthi isikhundla sivumelane

Ukugwala ngokushisa (ASTM A653 G90): Ububanzi, Ukuthi kubambiswe kahle, Nobungakanani besikhundla esihlukene kubridji nezindawo zokusebenza

Ngokwesiqhelo se-ASTM A653 G90, kufanele kubekho izinkampani zezinkcukacha ezingu-0.90 oz ngasemzini wokugcina (noma ngaphezu kwezigranamu ezi-275 ngasemitha yokuqondisa) zezinkcukacha zezinc eziyafakwa. Lokhu kwenza ukuthi kukhona umthandazo omkhulu oqukethe ukuvikela phakathi kwezilwanyana nezichemikhali ukuthi zihlangele kuwo. Izifundo zokuzivikela ezisemaphakathini emaphakathini amahhovhayi kakhulu kubonisa ukuthi lezi zinkcukacha zinakuphila ngaphezu kwezinsuku ezi-75 emazweni apho imizimba iyisibonelo. Nangona kusenamadwaladwalu amaningi okuhamba kweminyaka yezinguquko zokuchaza nokuthinteka kokusha, akakhathaliseki ukuthi zihlangele. Amathuba okuthinteka ayabonakala kakhulu futhi, akhathalela ngaphezu kwezipondombe ezi-3,600 ngasemzini wokugcina, lokhu kusho ukuthi inkcukacha ichaza ngendlela efanele xa kuyathinteka ngokuthinteka okufanayo kumaphakathi amaningi njengezindawo zokuhlola nezindawo zokudonsa izitayela. Izifundo zika-NACE International zikhuluma nalo, zibonisa ukuthi izinto ezihlanganisiwe ngokuthinta ngokuthinta kuzoba nezidingo zezifundo ezingu-50% kuphela kunazo ozizwe zizihlanganisiwe ngokuthinta ngokuthinta. Ngaphakathi kwezinsuku ezi-30, lokhu kusho ukuthi kunezimali eziningi ezihlanganisiwe ngokuphelele kwesikhathi sokuphila kwezinto.

Ukuthintana kwezinkqubo zokukhetha i-Substrate: Iistile ze-Carbon-Manganese vs. Iistile zemicroalloyed (Nb/V/Ti) ukusuka kwezinkqubo zokugalvanize nokuphakama kwamandla

Ukubhalwa kwezinkqubo zokukhetha kuyisibonelo sokubhekisele kwezinkqubo zokugalvanize nokuphakama kwamandla:

Kodwa abaphatha amathuba asebenzisa amaqhina amancane ama-niobium noma ama-vanadium kwi-steel, bafumana into ethile ekhwenywa ngokubhalwa kwesikhathi sokubhalwa ngokuthula. Isiphumo kukuphakanyiswa kwe-grain structures okuncane kakhulu, okuthetha ukuthi lezi microalloyed steels zingakwazi ukufikwa kwe-yield strengths ezingaphezulu kuka-550 MPa. Ngaphezu kwalokho, ukudalwa kwe-zinc ne-iron alloys kuhlelwa futhi. Okukhomba lezi zinto kuyisivumelwano sezinto zokuchitha zabo. Lokhu kusinda izindlela ezingabonakala zokudala phakathi kwamadilika okungahleli, okungaba yizinkinga zokugcina kuma-coatings lapho kuzokwenzeka ukusebenzisa imisebenzi emikhulu ngeminyaka. Ngaphakathi kwalokho, izinkulungwane zesi-carbon-manganese zezinkulungwane eziningi zesi-silicon zihambisana kakhulu. Lokhu kwenza amalayiya amaningi angasoloko akhona izinkinga zokuvulwa kwe-cracking emva kwalokho. Lokhu yisibonelo sokuthi abengineya besebenzisa izindawo ezinamaphuzu amakhulu yamaphuzu, noma bakhuluma izindlu ezinamaphuzu amakhulu, babuyela esikhundleni sokuchaza i-microalloyed steel bases kwe-galvanized boards. Lezi zinto ziyasebenza kahle lapho kufanele.

Ukusebenza Kwemikhili Ngemizimba Yokugcina Nokuguqula Amathuba

Amaphuzu Okukhala Nokuphepha: SS340 vs. S550GD+Z Emaphakathini Okuzimisa Nokuthatha Isikhundla

Xa sibhala ngokuphelele kwezinkulungwane zokusebenza, kufanele sibhekele amanombolo okuphelele okuthi aqondakala. I-ASTM SS340 iyabika ingxenye yokuqondakala yezinkulungwane ezingama-340 MPa, okuyasebenza kahle kumsebenzi wokubeka izikhumba, kodwa i-EN S550GD+Z iyaphinda phambili kwalokho ngaphezu kwe-550 MPa. Lokhu kwenza umehluko wonke xa kusetyenziswa kumsebenzi omkhulu njengezikhumba zokuphatha izicathulo, apho umthelela uyakwenzela ama-50 kN ngasemizini yamashumi amabili nemithathu futhi ngamanye amaxesha ayakwenzela kangaka. Umehluko wokuphelele kuyenza ukuthi abafundi bakwazi ukukhupha ubude bezinto ezisetyenziswa ngama-25% ngaphansi kokuthi bakhangele isikhundla sokuphelele, kodwa bakhangele isikhundla sokuphelele. Sibonile lokhu kusebenza kwezinye izindawo. Kuzo zonke izindawo zokuhlanganisa amathuba, iziphakamiso zibonisa ukuthi i-S550GD+Z ibe yisikhundla esingama-18% ngaphansi kwe-SS340 xa kusetyenziswa kuma-load othile okufanayo. Lokhu kukuphakamisa kwesikhundla sokuphelele kuyinto eyenza ukuthi abaprofeshinali abaningi bakhetha lokhu kumsebenzi apho akukho indawo yokugcina.

Ukuphelele nokuphelele kwezimali zokuphatha izimali: Ubuchwepheshe bokusebenza kwezindawo zokuphatha izimali nezindawo zokuphatha izimali

Ukuqinisa kwametalu kabefore ukuphakama kahle, okuyizindlela zokuthi kubhekwa ngokuthi kusobala njani ukuthi kuzokwenzeka ukufika emva kokugcina, kubhekwa ngokuthi kuyisibonelo sokuthi kusobala njani ukuthi kuzokwenzeka ukufika emva kokugcina ngenxa yezinkamba zokuzilungisa. I-SS340 yomthwalo wokusebenza yasemthwalo wokusebenza ishwa yasezwe esikhulu, ishwa elithile lisobala ngokuvamile ngamaphuzu amashumi amabili kanye namashumi amabili nezintathu, okuyisibonelo sokuthi sisobala njani ukuthi kuzokwenzeka ukufika emva kokugcina kubuso lwesikhulu noma izindawo ezingaphansi. Kodwa xa sibhekwa kumithwalo yokusebenza kuzindawo ezinokuzilungisa ngokuphambuka kakhulu, i-S550GD+Z ibonisa okunye. Le shwa yomthwalo yisobala ngamaphuzu amashumi amalathu kanye namashumi amashumi amalathu, kodwa iyathola ukuthi kusobala njani ukuthi kuzokwenzeka ukufika emva kokugcina ngokuphelele. Ukubonwa kwezinto ezenzekayo kubonisa iziphumo ezihle kakhulu futhi. Emasimini ekuthengisa izimoto apho izinye zezindawo zokukhupha ziyagcina izinkamba zokuzilungisa ngokuphambuka kakhulu ngokuvamile ngamashumi amakhulu amashumi amashumi amashumi ngosuku ngosuku, izinsiza zokusebenza zokusebenza kwe-S550GD+Z zazikhalipha ngokuphelele ngamashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amashumi amash......

Imibuzo Evame Ukubuzwa

Yini okwenza amabhodi wezinkolo zokugqibela zibe nemiphumela yokugqibela?

Ukubeka kwesikhumba sokuzincapha ngokuchitha kwezinkolo zokugqibela kwenza umbandela omkhulu nesikhebile sokugqibela, ukunika ubuhle obukhulu ekuphuleni kokugqibela nakho emizimbeni eyisisekelo njengezindawo zezempilo noma ezindaweni zokufika kwezilwandle.

Izikhathi zokusebenza zamabhodi wezinkolo zokugqibela ziyiphi ezindaweni ezahlukene?

Amabhodi wezinkolo zokugqibela ayasebenza phakathi kwezinsuku ezigqibileyo nezinsuku ezi-75 ezindaweni zokuphatha izinto, futhi phakathi kwezinsuku ezi-20 nezinsuku ezi-50 ezingaphakathi kwezindawo zezempilo. Izikhathi zokusebenza zabo ziyakhula kakhulu kunezikhathi zokusebenza zamabhodi wezinkolo ezingenakho imifanekiso yokuqinisa.

Ubudlelwano phakathi kwe-ASTM A653 SS340 no-EN 10346 S550GD+Z buyi?

I-ASTM A653 SS340 ibhekisele kuukuthintela okuhle nokuvaleka komkhondo wokuvaleka we-340 MPa, okuyisisekelo sokwenza izinto. I-EN 10346 S550GD+Z ibhekisele kuze kubhekisele kuzo zonke izinto ezinhle, nokuvaleka komkhondo wokuvaleka we-550 MPa, okuyisisekelo sokuphatha izinto ezinhle.

Ukubambisana kwezinye izinkolo kusiza kanjani ukuthi amabhodi wezinkolo zokugqibela zibe nesikhundla esihle?

Ukudibanisa kwe-micro ngamathuba amaningi njenge-niobium ne-vanadium kwenza ukuthi izigaba zibe nzima, futhi kufikwa emisweni eyinkulu yokubuka kwemithombo, nokuthuthukisa ukuthi izigaba zokuzinca ne-zinc-iron zibe nzima, ukulawula ukuthi kusebenza kanjani, nokunqoba ukuthi izigaba ezingazange zibe nzima.