Iamgold wayimitsa ntchito ku Suriname pakati pa milandu ya Covid-19
Wogwira ntchito ku Canada Iamgold Lachiwiri adayimitsa ntchito pamgodi wa golide wa Rosebel ku Suriname pomwe bungwe la ogwira ntchito lidapereka lamulo loti asiye kugwira ntchito pambuyo poti antchito asanu ndi awiri adayezetsa kuti ali ndi vuto la coronavirus.
Kampaniyo idati ogwira ntchito omwe ali ndi kachilomboka adakhala kwaokha ndipo ikuchitapo kanthu kuti aphe anthu omwe amakhala ndi malo antchito, koma bungweli lidagwiritsa ntchito njira imodzi yodzitetezera ngati maziko oletsa ntchito.
"Chifukwa cha kukana kwa Union pakukhazikitsa njira zowongolera za Covid-19, tikuyimitsa ntchito mpaka njira zowongolera zitakhazikitsidwa kuti titeteze chitetezo cha ogwira ntchito onse," kampaniyo idatero.
Ogwira ntchito m'migodi padziko lonse lapansi adayimitsa ntchito kwakanthawi kumigodi yawo chifukwa cha mliri wa covid-19 komanso kutseka komwe boma lidalamula kuti achepetse kufalikira kwa kachilomboka.
Iamgold adati idakhazikitsa malamulo okhudzana ndi chikhalidwe cha anthu, njira zaukhondo ndikuchepetsa ogwira nawo ntchito pamgodiwo zitachitika.
Mneneri wa Union Otmar Biswane adauza wayilesi yakomweko Lachiwiri kuti chitetezo sichinali chokwanira.
"Sikuti palibe chilichonse, koma zomwe zidaperekedwa sizikutanthauza kuti mutha kukhala ndi anthu ambiri mumsasa umodzi ndikungofuna kupanga 100% podutsa mliriwu," adatero.
Mgodi wa golidi wa Rosebel ndi wa mgodi wa golide wa ku Canada, pamene boma la dziko la South America lili ndi 5%.
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