Cov hniav nyiaj hniav kub yog cov khoom siv ua los ntawm vuam tungsten carbide pob cov hniav nrog cov hlau hlau alloy. Nws yog tsuas yog siv rau cov thee txiav thiab hard pob zeb mining ua hauj lwm hauv thee mining machines thiab tunneling machines.
Lub cev tseem ceeb yog tsim los ntawm vuam 35CrMo alloy steel nrog YG11C tungsten carbide. Qee cov khoom muaj lawv cov kev ua tau zoo los ntawm cov txheej txheem xws li lub tshuab nqus tsev kho cua sov thiab hnav-cov txheej tiv thaiv txheej txheej fusion. Thaum lub sijhawm ua haujlwm mining, cov hniav txiav yuav tsum tau tiv taus siab - kev ntxhov siab, hloov kev cuam tshuam, thiab kev sib txhuam kub. Lawv feem ntau ua tsis tiav vim thaiv pob txha, tawg tawg, lossis micro-tube tsis xws luag, thiab muaj cov coal seam gangue thiab kev sib cuag tsis zoo ua rau hnyav hnyav. Cov lus qhia kev ua kom zoo suav nrog kev kho cov ntsiab lus cobalt (8%-13%), ua kom zoo dua WC particle loj piv kom sib npaug thermal qaug zog tiv thaiv thiab tawg toughness, thiab ntxiv dag zog rau cobalt theem polymorphic transformation los ntawm kev kho cua sov. patented thev naus laus zis suav nrog kev npaj ntawm biaxial siv lead ua qauv, kev tsim kho tus kheej ntsuas phoo, thiab hloov txheej txheej casting thiab vuam txheej txheem. Qee cov qauv muaj cov pob txha tawg ntawm 18.9-20.2 MPam¹/², thiab lub neej kev pabcuam yog 2.3 npaug ntawm cov hniav txiav.
Structure thiab Composition
Lub tungsten carbide txiav cov hniav feem ntau yog tsim los ntawm cov hniav txiav, txiav hniav taub hau, thiab cov hniav hlau taub hau. Cov hniav txiav thiab lub taub hau txiav hniav feem ntau yog hu ua lub cev txiav hniav. Lub hardness ntawm cov hniav txiav lub cev yog 40-45 HRC, thiab qhov cuam tshuam toughness tsis tsawg dua 49 J / cm². Cov qauv dav dav ntawm cov mining txiav cov hniav yog txhawm rau txhawm rau tungsten carbide txiav cov hniav ntawm lub taub hau ntawm quenched thiab tempered low-alloy structural steel hniav lub cev. Cov hnav- tiv thaiv overlay txheej ntawm cov hniav txiav yog ib lub nplhaib- zoo li qhov sib cais thaj tsam tsim raws li cov kev taw qhia ntawm lub taub hau txiav, nrog qhov dav ntawm 20-30 hli thiab tuab ntawm 2-3 hli. Nws txoj haujlwm yog los tiv thaiv lub hauv paus khoom ntawm tus hniav lub taub hau los ntawm hnav. Lwm cov npe rau cov hniav txiav muaj xws li cov hniav txiav ncaj thiab cov hniav txiav hniav. Cov hniav txiav tiaj tus muaj lub taub hau tiaj tus hniav, thaum tus hniav txiav hniav muaj lub taub hau conical txiav, tseem hu ua conical txiav hniav. Cov hniav lub cev hais txog cov khoom ntawm cov hniav txiav tsis suav nrog lub taub hau tungsten carbide; lub taub hau txiav hniav hais txog qhov chaw uas lub taub hau tungsten carbide welded los yog embedded rau saum cov hniav txiav; cov hniav txiav yog hais txog qhov uas tuaj yeem muab tso rau hauv lub rooj zaum hniav, nrog cov duab ntawm cov duab plaub thiab lub tog raj kheej; qhov ntev ntawm cov hniav txiav yog hais txog qhov ntev ntawm lub taub hau txiav mus rau qhov kawg ntawm cov hniav txiav; qhov ntev ntawm lub taub hau txiav yog hais txog qhov ntev ntawm cov hniav txiav lub taub hau uas txuas mus rau sab saum toj ntawm cov hniav.
Txoj Cai
Cov hniav txiav ua ntej thiab txiav hauv cov coal seam los ntawm kev cuam tshuam kev sib hloov. Lawv yuav tsum tau tiv thaiv ob qho tib si kev nyuaj siab thiab shear- dabtsi yog khoov kev nyuaj siab ib txhij. Thaum lub sij hawm txiav cov thee thiab pob zeb, cov hniav txiav tsis tsuas yog dais lub sij hawm compressive kev nyuaj siab, tensile kev nyuaj siab thiab cuam tshuam loads, tab sis kuj tiv thaiv cov teebmeem ntawm ntev - lub sij hawm abrasive txhuam, kub nce los ntawm kev cuam tshuam, thiab corrosion los ntawm corrosive media. Qhov no yog kev sib xyaw ua ke ntawm ntu ntu thiab hloov pauv cuam tshuam. Thaum lub sij hawm excavation txheej txheem, cov hniav txiav kuj yuav muaj kev sib txhuam hnyav nrog cov coal seam, ua kom muaj kev sib txhuam kub. Thoob plaws hauv cov txheej txheem hnav, kuj tseem tuaj yeem muaj ntau yam kev coj tus cwj pwm xws li hauv zos yielding, hu rau qaug zog, corrosion thiab puas.
Cov txheej txheem ntau lawm thiab Technology
Cov txheej txheem tsim khoom ntawm ob chav siv lead ua tungsten carbide aims kom cov hniav txiav muaj ob qho tib si zoo toughness thiab hardness, thiab xyuas kom meej tias cov hardness thiab hnav tsis kam yuav tsum tau khaws cia tom qab vuam ua. Cov txheej txheem no feem ntau suav nrog kev npaj cov khoom, sib tov thiab pob zeb, sib tov thiab sib tsoo, nias thiab sintering, thiab lwm yam. Cov khoom siv tseem ceeb ntawm cov khoom siv feem pua, yog tungsten carbide hmoov 88-90 qhov chaw, tantalum carbide 2-3 qhov chaw, cobalt hmoov 5{{8}-carbiden carbons, 6 qhov chaw tetravalent solid tov 1-2 qhov chaw, tungsten carbide-chromium khoom tov 0.5 qhov chaw, titanium nitride 4-7 qhov chaw, boron carbide 2-4 qhov chaw, thiab paraffin 1 feem. Cov tungsten carbide hmoov txais yuav ob chav siv lead ua grain loj piv, nrog rau thawj tungsten carbide hmoov nrog ib tug me me ntawm 5-8 μm thiab lub thib ob tungsten carbide hmoov nrog ib tug particle loj ntawm 3-7 μm, nrog rau cov proportions yog 67-81% thiab 19-33% feem. Raws li cov txheej txheem no, qhov kev ua tau zoo ntawm cov khoom muaj xws li qhov ceev ntawm 16.85-17.02 g / cm³, Rockwell hardness ntawm 88.6-91.5 HRA, thiab khoov lub zog ntawm 4600-4650 MPa.
Vuam kev kho cua sov yog ib qho ntawm cov thev naus laus zis tseem ceeb hauv kev tsim cov hniav txiav. Cov txheej txheem niaj hnub no muaj kev sib xyaw vuam thiab kev kho cua sov, ua kom tiav cov cua sov, vuam thiab ncaj qha quenching hauv lub tshuab nqus tsev. Cov txheej txheem no ua rau cov tungsten carbide khov kho thiab sib raug zoo rau cov hniav ntawm lub cev hlau, txhim kho qhov cuam tshuam ntawm cov hniav txiav.
Performance Indicators
Cov kev ua haujlwm tseem ceeb ntawm tungsten carbide cov hniav muaj xws li qhov ntom ntom, hardness, dabtsi yog khoov lub zog, thiab lwm yam. Piv txwv li, qhov kev ua haujlwm tsis zoo ntawm ob -grain tungsten carbide cov hniav yog qhov ntom 16.85 - 17.02 g/cm³, Rockwell hardness 88.6 - 91.5 HRA, - zog quab yuam {A4}, porosity A02, B00, thiab nruab nrab grain loj Ntau tshaj los yog sib npaug rau 6.0.
Cov nplej loj ntawm tungsten carbide cuam tshuam rau lub zog quab yuam, hardness, khoov lub zog, thiab tawg toughness ntawm tungsten carbides. Rau ultra-coarse-grained tungsten carbides nrog cov ntsiab lus cobalt ntawm 10%, raws li cov nplej loj ntawm tungsten carbide nce, lub zog quab yuam, hardness, thiab dabtsi yog khoov lub zog ntawm cov alloy maj mam txo, thaum lub pob txha toughness tus nqi maj mam nce.
Txhawm rau daws qhov teeb meem ntawm qhov sib txawv loj hauv cov qoob loo loj ntawm tungsten carbide hauv ultra- ntxhib-grained tungsten carbides, kev tshawb fawb kev lag luam tau tawm tswv yim qhov kev xav ntawm kev siv tus nqi quab yuam rau indirectly characterize lub grain loj ntawm tungsten carbide.
Ua tsis tiav
Cov kev ua tsis tiav ntawm cov tsoos zoo tib yam txiav cov hniav feem ntau suav nrog ob hom:Ua ntej, raws li tungsten carbide hniav lub taub hau hnav, cov hniav lub taub hau ua blunt thiab tsis muaj peev xwm txiav cov pob zeb zoo, ua rau txo qis hauv kev txiav; Thib ob, lub hauv paus steel hnav ua ntej lub taub hau tungsten carbide, thaum hnav hnyav, nws poob nws qhov kev txhawb nqa thiab kev tiv thaiv ntawm tungsten carbide hniav taub hau, ua rau tungsten carbide poob tag nrho cov hniav thiab tag nrho cov hniav txiav tsis ua tiav. Thaum lub sij hawm cov txheej txheem ntawm cov thee seam excavation, vim yog qhov cuam tshuam ntawm loads, nto yog nyob rau hauv ib tug siab - lub xeev kev nyuaj siab, thiab tungsten carbide txiav cov hniav tawg. Vim qhov tsis paub tseeb ntawm thee seam geology, tus hniav lub taub hau tsis tuaj yeem tuav lub xeev kev sib cuag zoo nrog lub coal seam thaum khawb, thiab cov coal seam muaj qee qhov coal gangue, uas inevitably ua rau muaj kev nce rau hauv cheeb tsam nrog kev sib cuag tsis zoo lossis tsis muaj kev sib cuag. Cov kev ntxhov siab zoo li no ua rau muaj kev cuam tshuam kev qaug zog thiab thermal qaug zog tawg nyob rau hauv qhov kev txiav txim ntawm alternating loads. Tsis tas li ntawd, micro-tube muaj qhov tsis xws luag ntawm cov hniav taub hau lossis sab hauv tuaj yeem ua rau muaj kev ntxhov siab thiab ua rau kev puas tsuaj ntawm tungsten carbide txiav cov hniav.
Kev tshuaj xyuas qhov systematic ntawm qhov ua tsis tiav tshwj xeeb suav nrog:cov khoom tsis xws luag, xws li lub taub hau tungsten carbide hniav uas muaj graphite impurities, tsis sib npaug ntawm cov nplej, tawg los yog pores; cov khoom tsim, xws li cov ntsiab lus tsis txaus cobalt (Co) uas ua rau tsis muaj zog txaus, thiab ua rau tawg tawg hauv qhov cuam tshuam; txheej txheem kev ntxhov siab, xws li loj residual kev nyuaj siab los ntawm brazing, vim qhov sib txawv expansion coefficients ntawm tungsten carbide, brazing muab tub lim hlau thiab cov khoom siv hauv paus, qhov sib txawv ntawm kev sib cog lus thaum lub sij hawm txias ua rau txo qis hauv vuam zog; siab -kev ua haujlwm kub, xws li qhov tawv tawv tsis tshua muaj zog (muaj peev xwm tswj tau qhov hardness ntawm qhov kub siab), thaum txiav cov hniav txiav cov thee thiab pob zeb, qhov kub ntawm cov hniav ntawm lub taub hau tuaj yeem ncav cuag 600-800 degree, hardness poob qis, nrawm hnav; txias tawg ua rau, xws li cov ntsiab lus carbon siab nyob rau hauv cov hniav txiav, cov txheej txheem vuam tsis zoo ua rau cov kab nrib pleb tshwm sim, tsis txaus weld thickness / rigidity, thiab tsis sib xws cua sov thiab txias.
Kev ua kom zoo
Hais txog cov ntaub ntawv tsis ua hauj lwm thiab ua rau cov tungsten carbide txiav cov hniav, lawv cov kev ua tau zoo tuaj yeem txhim kho los ntawm kev kho qhov loj me, muaj pes tsawg leeg thiab qhov sib piv ntawm cov hlau. Ua ntej, cov ntsiab lus ntawm Co yuav tsum tsis txhob qis dhau, vim tias nws tuaj yeem txhim kho kev tiv thaiv kev tiv thaiv - thermal qaug zog muaj peev xwm, ntxiv dag zog rau cov yas ntawm cov hlau, thiab txo kev ntxhov siab, thiab lwm yam. Txawm li cas los xij, kev nce hauv cov ntsiab lus ntawm Co yuav ua rau qee qhov cuam tshuam rau kev hnav tsis kam. Raws li lub hardness ntawm cov thee seam, nws yog feem ntau tswj ntawm 8% thiab 13%. Thaum qhov kev ntxhib los mos yog qhov nyuaj, cov ntsiab lus ntawm Co tuaj yeem tsim nyog ntxiv. Qhov thib ob, kev xaiv thiab qhov sib piv ntawm WC hais. Fine-WC cov hmoov nplej muaj qhov txo qis tag nrho cheeb tsam, thaj chaw tshwj xeeb ntxiv, thiab nce qhov nruab nrab ntawm txoj kev pub dawb ntawm Co, uas yog sib npaug rau indirect nce cov ntsiab lus ntawm Co, thiab qhov no yog qhov tsim nyog rau kev txhim kho cov pob txha toughness ntawm cov hlau. Txhawm rau ntxiv dag zog rau Co theem, cov txheej txheem kho cua sov tsim nyog kuj yog ib txoj hauv kev zoo. Los ntawm kev ua kom zoo dua ntawm kev hloov pauv polymorphic ntawm Co los tsim lwm theem los txhim kho lub ntsej muag -centered cubic cobalt, lub hom phiaj ntawm kev ntxiv dag zog rau kev hnav- tiv thaiv cov hniav ntawm tungsten carbide tau tiav. Niaj hnub nimno optimization cov txheej txheem tseem suav nrog cov txheej txheem kev sib xyaw ua ke ntawm brazing thiab kev kho cua sov, uas yog, ua kom tiav cov brazing thiab kev kho cua sov hauv lub tshuab nqus tsev ib zaug, ua rau cov tungsten carbide thiab cov hniav lub cev steel daim ntawv cog lus ruaj khov, thiab txhim kho qhov cuam tshuam ntawm cov hniav txiav.
Cov khoom kub
Cov ntaub ntawv tuam txhab
Kunshan Zhiyi Dingli Cemented Carbide cuab yeej Co., Ltd. Peb cov thee mining hniav sib xyaw ua ke 35CrMo alloy steel lub cev welded nrog YG11C tungsten carbide pob cov hniav, xa cov hardness zoo, cuam tshuam tsis kam, thiab abrasion tsis kam rau thee txiav thiab hard pob zeb ua haujlwm. Engineered rau siab tshaj plaws kev pab cuam lub neej thiab txiav efficiency, peb cov hniav pab mining lag luam txo cov cuab yeej hloov cov nqi thiab downtime.
Peb lub Hoobkas tsim cov thee mining hniav nyob rau hauv ntau tshaj 120 hom qauv txuam nrog txhua qhov loj thee mining tshuab thiab roadheader hom. Ua ke induction vuam ntawm YG11C carbide inserts nrog precision -machined 35CrMo steel lub cev, peb ua kom muaj kev sib raug zoo thiab kev pab lub neej ntev. Lub hli muaj peev xwm ntau tshaj 40,000 daim, ua haujlwm rau kev lag luam mining hauv Suav teb, Russia, Indonesia, thiab lwm lub lag luam loj mining.
Tshuab kuaj
Ntau lawm Flow Chart
Packing & Delivery
Ntim
1>Muab cov khoom ntim nrog lub hnab yas lossis cov ntaub ntawv yas rau hauv lub thawv ntoo / thawv / lub thawv hlau, thiab lwm yam.
2>Lwm cov ntim yuav raug lees txais raws li koj xav tau.
FAQ
Q1: Cov ntaub ntawv dab tsi yog koj cov hniav mining ua los ntawm?
A1: Peb cov hniav sib txuas 35CrMo alloy steel lub cev nrog YG11C tungsten carbide inserts welded rau siab tshaj plaws.
Q2: Lub neej ua haujlwm li cas yog dab tsi?
A2: Peb cov hniav feem ntau kav ntev li 2-3 × ntev dua li cov khoom siv hauv tib lub mining.
Q3: Koj puas tuaj yeem tsim cov hniav kev cai?
A3: Yog lawm, kev cai profile tuaj yeem tsim los ntawm cov duab kos lossis cov qauv hauv 15-20 hnub ua haujlwm.
Hais txog Xim Aberration
Cov duab khoom yog tag nrho cov duab ntawm lub cev, vim yog yees duab- siv thev naus laus zis, teeb pom kev zoo, tsis pom kev, thiab lwm yam, tej zaum yuav muaj qhov sib txawv ntawm cov khoom tau txais lub cev thiab cov duab, thov xa mus rau lub cev.
Cargo Receipt
Tag nrho peb cov khoom dhau los ntawm kev soj ntsuam nruj thiab suav ua ntej xa zaub mov. Thov xyuas cov khoom ntawm tus kheej thaum lawv tau txais.
Thov tsis kam kos npe thiab tiv tauj peb yog tias koj pom tias tus lej CTN thiab tus qauv tsis raug lossis cov khoom puas lawm hauv kev thauj mus los.
Cim npe nrov: Tuam Tshoj coal mining hniav manufacturers, lwm tus neeg, Hoobkas
