Pan American ayaa dib u bilaabay hawlihii Mexico
Pan American Silver (TSX: PAAS) ayaa ku dhawaaqday in ay dib uga bilowdeen howlgalladooda Dolores iyo La Colorada miinada ee Mexico, ka dib markii ay dib u bilowday howlaheeda Shahuindo, La Arena, San Vicente iyo Manantial Espejo, oo la bilaabay bishii May.
Miinadu waxay markii hore ku shaqaynaysay awoodo la dhimay si ay u dejiso borotokool cusub oo ka jawaabaya covid-19, Pan American ayaa yidhi.
Pan American waxa kale oo uu hadda sugayaa oggolaanshaha sharciyaynta si uu dib ugu bilaabo hawlihii Huaron iyo Morococha ee Peru.
Soo saare lacagta koowaad ee labaad ee ugu weyn adduunka ayaa hakisay howlihii caadiga ahaa ee macdanteeda Mexico, Peru, Argentina iyo Bolivia bishii Maarso si ay ugu hoggaansamaan tillaabooyinka karantiilnimada qaranka ee qasabka ah.
Macdanta Timmins West iyo Bell Creek ee Kanada waxay sii wadeen inay ku shaqeeyaan 90% awoodda.
"Waxaan ku soconaa si taxadar leh oo dib loogu bilaabo hawlgallada, anagoo ka shaqaynayna soo celinta heerarka wax soo saarka buuxa ee hawlgaladayada annagoo ilaalinayna caafimaadka iyo badbaadada dadkeena," ayuu yiri maamulaha guud Michael Steinmann.
Pan American waxay la laabatay hagitaankeedii hawlgelinta ee 2020-kii Maarso 12, 2020, iyadoo la eegayo hubanti la'aanta la xiriirta masiibada.
Maalintii Talaadada, saamiyada Pan American ayaa hoos u dhacay 6% marka loo eego TSX. Shirkaddu waxay leedahay C$ 8.1 bilyan oo suuq ah.
Kubadda Mill Liner Xulashada Qalabka
Waxyaabaha kala duwan ee la jajabiyey, xaaladaha shaqada ee kala duwan waxay u baahan yihiin qalabyo kala duwan oo ku habboon. Sidoo kale, qaybta wax lagu shiido ee aan qallafsanayn iyo qaybta wax lagu shiido waxay u baahan tahay qalabyo kala duwan.
H&G ayaa bixiya agabka soo socda si aad u tuurto makiinadaada kubbadda:
Birta Manganese
Maaddada manganese ee saxanka sare ee birta birta manganese ee saxanka dahaarka guud ahaan waa 11-14%, kaarboonku guud ahaan waa 0.90-1.50%, kuwaas oo intooda badan ka sarreeya 1.0%. Markay tahay culayska saamaynta hooseeya, engegnaanta waxay gaari kartaa HB300-400. Marka culeyska sareeyo, engegnaanta waxay gaari kartaa HB500-800. Iyadoo ku xiran culeyska saameynta, qoto dheer ee lakabka adag wuxuu gaari karaa 10-20mm. Lakabka qallafsan ee leh qallafsanaanta sare waxay iska caabin kartaa saameynta waxayna yareyn kartaa dharbaaxada. Birta manganese-ka sare waxay leedahay wax qabad heer sare ah oo ka-hortagga xirashada iyadoo la raacayo xaaladda saameyn xooggan oo daal ah, sidaas darteed waxaa badanaa loo isticmaalaa qaybaha xirashada u adkaysta ee macdanta, qalabka dhismaha, awoodda kulaylka, iyo qalabka kale ee farsamada. Marka la eego shuruudaha xaaladaha saameynta hooseeya, birta manganese sare ma sameyn karto sifooyinka walxaha sababtoo ah saameynta adkeynta shaqadu maaha mid cad.
Halabuurka Kiimikada
| Magaca | Halabuurka Kiimikada (%) | |||||||
| C | Si | Mn | Cr | Mo | Cu | 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 |
Guryaha makaanikada iyo qaab-dhismeedka biraha
| Magaca | Hardness Dusha sare (HB) | Qiimaha Saamaynta Ak (J/cm2) | Qaab-dhismeedka yar yar |
| Mn14 Mill Liner | ≤240 | ≥100 | A+C |
| Mn18 Mill Liner | ≤260 | ≥150 | A+C |
| C -Carbide | Carbide A-ustenite la hayo | Austenite | |||
Tilmaamaha alaabta
| Cabbirka | Hole Dia (mm) | Dhererka xadhkaha (mm) | ||
| ≤40 | ≥40 | ≤250 | ≥250 | |
| Dulqaad | +20 | +30 | +20 | +30 |
Birta Daawaha ee Chrome
Birta daawaha ee Chromium waxa loo qaybiyaa birta chromium aluminium sare ah (koox ka kooban 8-26% kaarboon ka kooban 2.0-3.6%), birta daawaha chromium dhexdhexaad ah ( content chromium 4-6%, content carbon 2.0-3.2%), hoose Saddex nooc oo ah birta dabaysha (ka kooban chromium 1-3%, kaarboonka 2.1-3.6%). Muuqaalkeeda cajiibka ah ayaa ah in microhardness ee M7C3 eutectic carbide uu yahay HV1300-1800, kaas oo loo qaybiyo qaab shabakad jaban oo go'doonsan martensite (qaabka ugu adag ee shaxanka birta) matrix, yaraynta saameynta dillaaca ee matrixka. Sidaa darteed, xargaha daawaynta sare ee chromium-ka ayaa leh awood sare, adkaanta kubbadda, iyo caabbinta sare ee dharka, iyo waxqabadkeedu wuxuu ka dhigan yahay heerka ugu sarreeya ee qalabka birta u adkaysta ee hadda jira.
Halabuurka Kiimikada
| Magaca | Halabuurka Kiimikada (%) | |||||||
| C | Si | Mn | Cr | Mo | Cu | P | S | |
| Khadka Sare ee Aloyiga Chrome | 2.0-3.6 | 0-1.0 | 0-2.0 | 8-26 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
| Dhexdhexaadiyaha Alloy Chrome | 2.0-3.3 | 0-1.2 | 0-2.0 | 4-8 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
| Xadhkaha Dabeecadda Aloyiga ee Chrome Low | 2.1-3.6 | 0-1.5 | 0-2.0 | 1-3 | 0-1.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Guryaha makaanikada iyo qaab-dhismeedka biraha
| Magaca | Dusha sare (HRC) Ak (J/cm2) | Qaab-dhismeedka yar yar | ||||
| Khadka Sare ee Aloyiga Chrome | ≥58 | ≥3.5 | M+C+A | |||
| Dhexdhexaadiyaha Alloy Chrome | ≥48 | ≥10 | M+C | |||
| Xadhkaha Dabeecadda Aloyiga ee Chrome Low | ≥45 | ≥15 | M+C+P | |||
| M- Martensite | C - Carbide | A-Austenite | P-Pearlite | |||
Tilmaamaha alaabta
| Cabbirka | Hole Dia. (mm) Dhererka xadhkaha (mm) | |||
| ≤40 | ≥40 | ≤250 | ≥250 | |
| Dulqaad | +20 | +30 | +20 | +30 |
Cr-Mo Alloy Steel
Mashiinnada H&G waxay adeegsadaan birta daawaynta ee Cr-Mo si ay u tuuraan makiinada wax-shiidka. Walaxdan oo ku salaysan heerka Australia, (AS2074 Standard L2B, iyo AS2074 Standard L2C) waxa ay bixisa saamayn heersare ah oo ay xidhato iska caabin dhammaan codsiyada wax-shiidka ee semi-autogenous.
Halabuurka Kiimikada
| Koodhka | Walxaha Kiimikada (%) | |||||||
| C | Si | Mn | Cr | Mo | Cu | 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 |
Hantida Jirka & Dhismayaasha yar yar
| Koodhka | Hardness (HB) | Ak (J/cm2) | Qaab-dhismeedka yar yar |
| L2B | 325-375 | ≥50 | P |
| L2C | 350-400 | ≥75 | M |
| M-Martensite, C-Carbide, A-Austenite, P-Pearlite | |||
Ni-hard Steel
Ni-Hard waa bir shub ah oo cad, oo lagu daray nikkel iyo chromium oo ku habboon saamaynta hoose, naaxinta simbiriirixan ee codsiyada qoyan iyo kuwa qalalan. Ni-Hard waa shay aad u adkaysi badan, oo lagu shubay foomamka iyo qaababka kuwaas oo ku habboon in loo isticmaalo meelaha xoqan iyo xidhashada jawiga iyo codsiyada.
Halabuurka Kiimikada
| Magaca | C | Si | Mn | Ni | Cr | S | P | Mo | Adag |
| 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 |
Birta Cad ee Birta
Halabuurka Kiimikada
| Magaca | Halabuurka Kiimikada (%) | |||||||
| C | Si | Mn | Cr | Mo | Cu | P | S | |
| Xadhkaha Birta Cad ee Birta | 2.0-3.3 | 0-0.8 | ≤2.0 | 12-26 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Hantida Jirka & Dhismayaasha yar yar
| Magaca | HRC | Ak (J/cm2) | Qaab-dhismeedka yar yar |
| Xadhkaha Birta Cad ee Birta | ≥58 | ≥3.5 | M+C+A |
| M-Martensite C- Carbide A-Austenite | |||
Haddii aad hayso su'aal gaar ah, fadlan la xidhiidh injineerkayaga si uu kuugu adeego!
Nick Sun [email protected]
Waqtiga boostada: Juun-19-2020