Mphamvu zachitsulo zidadutsa $100 pomwe zovuta zopezeka zimakwaniritsa zofunikira
Iron-ore idapitilira $100/t pomwe vuto la kupezeka ku Brazil likugwirizana ndi kufunikira kosalekeza, kwamphamvu kwa opanga zitsulo ku China.
Mitengo ya Benchmark idakwera mpaka $ 101.05 Lachisanu pomwe Brazil, wotumiza kunja kwachiwiri padziko lonse lapansi, adawona kuchuluka kwa matenda a coronavirus, zomwe zikudzetsa nkhawa kuti mliriwo utha kuchepetsa kupezeka kwanuko. M'mwezi wa Epulo, Vale wochita mgodi adadula chiwongolero chake chapachaka chotengera nyengo yoyipa komanso momwe kachilomboka kakhudzidwira ntchito. Pakadali pano, milu yachitsulo yachitsulo ku China ikupitilira kuchepa.
Kukula kwa mafakitale kwakula mu 2020 ngakhale mliri wa coronavirus udasokoneza ntchito zamafakitale m'zachuma zambiri, ngakhale Bloomberg Intelligence yakhala m'gulu la owonera akuchenjeza kuti msika ukhoza kuchulukirachulukira mu theka lachiwiri. Kuphatikiza pa Vale, mitengo yokwera idzalimbikitsa kubwerera ku BHP Group, Rio Tinto Group ndi Fortescue Metals Group.
Kuyambikanso koyambirira kwa ntchito zamafakitale ku China kwalimbikitsa kuchira kwa ntchito zapansi panthaka ndipo mphero zachitsulo zikupitilizabe kutulutsa, akatswiri a China International Capital Corp. kuphatikiza Ma Kai adalemba m'makalata.
"Iron ore ikhalabe bwino chaka chino," adatero, ndikubwerera pang'onopang'ono kuchokera gawo lachitatu.
Mitengo ya Benchmark ndiyokwera kwambiri kuyambira Ogasiti. Tsogolo ku Singapore linali pa $97, kutsogola ku phindu lawo la mwezi uliwonse. Pa Dalian Commodity Exchange, tsogolo lakwera 23% mu Meyi.
Credit Suisse Group posachedwa idayerekeza kuti msika tsopano uli "pazovuta kwambiri," zomwe mwina zipitilira mpaka Julayi. Bloomberg Intelligence ikuyembekeza kuchulukira kwa matani 34 miliyoni mu theka lachiwiri pazambiri komanso kufunikira kopitilira muyeso, kutsika kuchokera pakusokonekera kwa matani 25 miliyoni mu theka loyamba. Izi zikuwunikira ngati kupindula kwamitengo ndikokhazikika.
"Pali zokayikitsa" za mphamvu ya msonkhanowu m'miyezi itatu ikubwerayi, adatero Hui Heng Tan, katswiri wa Marex Spectron Group. Kutengera komwe kumapezeka ku Australia ndi ku Brazil kukuyembekezeka kukwera, ngakhale kusokonezeka kwa dziko la South America kudzakhala chinthu chofunikira kuwona mu theka lachiwiri, adatero. Kuwonjezeka kumeneku kungagwirizane ndi pamene China idzasiya nthawi yake yomanga ndi zitsulo zokwera, adatero.
Kusankhidwa kwa Zinthu Zopangira Mpira Mill
Zosiyanasiyana zophwanyidwa, zogwirira ntchito zosiyanasiyana zimafunikira ma liner osiyanasiyana kuti agwirizane. Komanso, chipinda chogawirako ndi chopera bwino chimafunikira zingwe zosiyanasiyana.
H&G Machinery imapereka zinthu zotsatirazi kuti muponyere liner yanu ya mphero:
Chitsulo cha Manganese
The manganese zili mkulu manganese zitsulo mpira mphero akalowa mbale nthawi zambiri 11-14%, ndi mpweya zili zambiri 0.90-1.50%, ambiri amene ali pamwamba 1.0%. Pakatundu wocheperako, kuuma kumatha kufika HB300-400. Pakatundu wambiri, kuuma kumatha kufika HB500-800. Kutengera momwe zimakhudzira, kuya kwa wosanjikiza wowuma kumatha kufika 10-20mm. Wosanjikiza wowuma wokhala ndi kuuma kwakukulu kumatha kukana kukhudzidwa ndikuchepetsa kuvala kwa abrasive. Chitsulo chapamwamba cha manganese chimakhala ndi ntchito yabwino kwambiri yotsutsana ndi kuvala pansi pakuvala kwamphamvu kwa abrasive, motero nthawi zambiri amagwiritsidwa ntchito m'magawo osamva amigodi, zida zomangira, mphamvu zotentha, ndi zida zina zamakina. Pansi pazikhalidwe zotsika kwambiri, chitsulo chachikulu cha manganese sichingakhale ndi mawonekedwe azinthuzo chifukwa chowumitsa ntchito sichikuwonekera.
Mapangidwe a Chemical
| Dzina | Mapangidwe a Chemical (%) | |||||||
| C | Si | Mn | Cr | Mo | Ku | P | S | |
| Mn14 Mill Liner | 0.9-1.5 | 0.3-1.0 | 11-14 | 0-2.5 | 0-0.5 | ≤0.05 | ≤0.06 | ≤0.06 |
| Mn18 Mill Liner | 1.0-1.5 | 0.3-1.0 | 16-19 | 0-2.5 | 0-0.5 | ≤0.05 | ≤0.06 | ≤0.06 |
Zimango katundu ndi kapangidwe metallographic
| Dzina | Kuuma Pamwamba (HB) | Mtengo wa Ak (J/cm2) | Microstructure |
| Mn14 Mill Liner | ≤240 | ≥100 | A+C |
| Mn18 Mill Liner | ≤260 | ≥150 | A+C |
| C -Carbide | Carbide A-yosungidwa austenite | Austenite | |||
Mafotokozedwe azinthu
| Kukula | Hole Dia. (mm) | Kutalika kwa Liner (mm) | ||
| ≤40 | ≥40 | ≤250 | ≥250 | |
| Kulekerera | + 20 | + 30 | + | + 30 |
Chrome Alloy Steel
Chromium aloyi kuponyedwa chitsulo ogaŵikana mkulu chromium aloyi kuponyedwa chitsulo (chromium zili 8-26% mpweya zili 2.0-3.6%), sing'anga chromium aloyi kuponyedwa chitsulo (chromium zili 4-6%, mpweya zili 2.0-3.2%), otsika chromium Mitundu itatu ya aloyi kuponyedwa chitsulo (chromium zili 1-3%, carbon zili 2.1-3.6%). Chochititsa chidwi ndi chakuti microhardness ya M7C3 eutectic carbide ndi HV1300-1800, yomwe imagawidwa mu mawonekedwe a maukonde osweka ndi olekanitsidwa pa martensite (yovuta kwambiri muzitsulo zachitsulo) masanjidwewo, kuchepetsa zotsatira za cleavage pa masanjidwewo. Chifukwa chake, cholumikizira chapamwamba cha chromium chimakhala ndi mphamvu zambiri, kulimba kwa mphero ya mpira, komanso kukana kuvala kwapamwamba, ndipo magwiridwe ake amayimira kuchuluka kwazinthu zomwe zitsulo sizimva kuvala.
Mapangidwe a Chemical
| Dzina | Mapangidwe a Chemical (%) | |||||||
| C | Si | Mn | Cr | Mo | Ku | P | S | |
| High Chrome Alloy Liner | 2.0-3.6 | 0-1.0 | 0-2.0 | 8-26 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
| Middle Chrome Alloy Liner | 2.0-3.3 | 0-1.2 | 0-2.0 | 4-8 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
| Low Chrome Alloy Liner | 2.1-3.6 | 0-1.5 | 0-2.0 | 1-3 | 0-1.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Zimango katundu ndi kapangidwe metallographic
| Dzina | Pamwamba (HRC) Ak (J/cm2) | Microstructure | ||||
| High Chrome Alloy Liner | ≥58 | ≥3.5 | M+C+A | |||
| Middle Chrome Alloy Liner | ≥48 | ≥10 | M+C | |||
| Low Chrome Alloy Liner | ≥45 | ≥15 | M+C+P | |||
| M-Martensite | C-Carbide | A-Austenite | P-Pearlite | |||
Mafotokozedwe azinthu
| Kukula | Hole Dia. (mm) Kutalika kwa Liner (mm) | |||
| ≤40 | ≥40 | ≤250 | ≥250 | |
| Kulekerera | + 20 | + 30 | + | + 30 |
Cr-Mo Aloyi Chitsulo
H&G Machinery imagwiritsa ntchito chitsulo cha Cr-Mo alloy poponya mphero. Zinthuzi kutengera muyeso waku Australia, (AS2074 Standard L2B, ndi AS2074 Standard L2C) zimapatsa mphamvu komanso kukana kuvala pamapulogalamu onse opangira ma semi-autogenous mphero.
Mapangidwe a Chemical
| Kodi | Chemical Elements (%) | |||||||
| C | Si | Mn | Cr | Mo | Ku | P | S | |
| L2B | 0.6-0.9 | 0.4-0.7 | 0.6-1.0 | 1.8-2.1 | 0.2-0.4 | 0.3-0.5 | ≤0.04 | ≤0.06 |
| L2C | 0.3-0.45 | 0.4-0.7 | 1.3-1.6 | 2.5-3.2 | 0.6-0.8 | 0.3-0.5 | ≤0.04 | ≤0.06 |
Physical Property & Microstructure
| Kodi | Kuuma (HB) | Ak (J/cm2) | Microstructure |
| L2B | 325-375 | ≥50 | P |
| L2C | 350-400 | ≥75 | M |
| M-Martensite, C-Carbide, A-Austenite, P-Pearlite | |||
Ni-hard Steel
Ni-Hard ndi chitsulo choyera choyera, chosakanikirana ndi faifi tambala ndi chromium yoyenera kutsika pang'ono, ma abrasion otsetsereka pazonse zonyowa komanso zowuma. Ni-Hard ndi chinthu chosamva kuvala kwambiri, chopangidwa m'mawonekedwe ndi mawonekedwe omwe ndi abwino kuti agwiritsidwe ntchito pamapangidwe abrasive ndi kuvala ndi kugwiritsa ntchito.
Mapangidwe a Chemical
| Dzina | C | Si | Mn | Ndi | Cr | S | P | Mo | Kuuma |
| Ni-Hard AS2027 Gr Ni Cr 1-550 | 3.2-3.6 | 0.3-0.8 | 0.2-0.8 | 3.0-5.0 | 1.5-3.0 | ≤0.12 | ≤0.15 | ≤0.5 | 550-600HBN |
| Ni-Hard AS2027 Gr Ni Cr 2-550 | 2.8-3.2 | 0.3-0.8 | 0.2-0.8 | 3.0-5.0 | 1.5-3.0 | ≤0.12 | ≤0.15 | ≤0.5 | 500-550HBN |
| Ni-Hard AS2027 Gr Ni Cr 2-550 | 3.2-3.6 | 1.5-2.2 | 0.2-0.8 | 4.0-5.5 | 8.0-10.0 | ≤0.12 | ≤0.15 | ≤0.5 | 630-670HBN |
Chitsulo Choyera
Mapangidwe a Chemical
| Dzina | Mapangidwe a Chemical (%) | |||||||
| C | Si | Mn | Cr | Mo | Ku | P | S | |
| White Iron Steel Liner | 2.0-3.3 | 0-0.8 | ≤2.0 | 12-26 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Physical Property & Microstructure
| Dzina | Mtengo wa HRC | Ak(J/cm2) | Microstructure |
| White Iron Steel Liner | ≥58 | ≥3.5 | M+C+A |
| M-Martensite C-Carbide A-Austenite | |||
Ngati muli ndi mafunso apadera, chonde lemberani injiniya wathu kuti akuthandizeni!
Nick Sun [email protected]
Nthawi yotumiza: Jun-19-2020