Lub pwm yog lub hauv paus tseem ceeb hauv lub tshuab pellet. Thiab nws yog qhov tseem ceeb rauua cov khoom noj pelletsRaws li cov ntaub ntawv tsis tiav, tus nqi ntawm lub tshuab pellet tuag poob ntau dua 25% ntawm tus nqi txij nkawm ntawm tag nrho cov chaw ua haujlwm tsim khoom. Rau txhua feem pua ntawm cov nqi nce, koj qhov kev sib tw ua lag luam poob qis 0.25%. Yog li cov lus qhia ntawm lub tshuab pellet tseem ceeb heev.
Shanghai Zhengyi (CPSHZY) yog ib tus kws tshaj lijtshuab pub pellettus neeg muag khoom hauv Suav teb. Peb muab lub nplhaib tuag pellet zeb, tiaj tus tuag pellet zeb thiabpellet zeb qhov chaw, xws li lub tuag tiaj tus, lub nplhaib tuag, lub tshuab pellet zeb, thiab lwm yam khoom rau lub tshuab pellet.
1.Cov khoom siv tuag pellet zeb
Feem ntau, lub pwm pellet yog ua los ntawm cov hlau carbon, cov hlau alloy lossis cov hlau tsis xeb los ntawm kev forging, machining, drilling qhov, thiab kev kho cua sov. Tus neeg siv tuaj yeem xaiv raws li qhov xeb ntawm cov khoom siv raw. Cov khoom siv ntawm lub pwm pellet yuav tsum ua los ntawm cov hlau alloy lossis cov hlau stainless hlau.
Cov hlau ua los ntawm cov pa roj carbon, xws li 45 hlau, nws qhov kev kho cua sov hardness feem ntau yog 45-50 HRC, nws yog cov khoom siv tuag nplhaib qib qis, nws qhov kev hnav tsis kam thiab kev tiv thaiv corrosion tsis zoo, tam sim no yeej tshem tawm.
Cov hlau sib xyaw ua ke, xws li 40Cr, 35CrMo, thiab lwm yam, nrog rau qhov nyuaj kho cua sov siab dua 50HRC thiab cov khoom siv kho tshuab zoo. Cov pwm ua los ntawm cov khoom no muaj lub zog siab thiab hnav tsis kam, tab sis qhov tsis zoo yog tias kev tiv thaiv corrosion tsis zoo, tshwj xeeb tshaj yog rau kev pub ntses.
Tus nqi ntawm cov pwm nplhaib, uas yog ua los ntawm cov khoom siv, marigold pellets, ntoo chips, straw pellets, thiab lwm yam, yog siab dua li cov hlau tsis xeb. Ob leeg 20CrMnTi thiab 20MnCr5 yog cov hlau alloy uas tsis tshua muaj carburizing, ob qho tib si yog tib yam, tsuas yog tias tus thawj yog hlau Suav teb thiab tus tom kawg yog hlau German. Vim tias Ti, ib qho tshuaj lom neeg, tsis tshua muaj nyob txawv teb chaws, 20CrMnTi lossis 20CrMn los ntawm Tuam Tshoj yog siv es tsis yog 20MnCr5 los ntawm lub teb chaws Yelemees, yog li nws tsis poob rau hauv qhov ntau ntawm cov hlau alloy. Txawm li cas los xij, cov txheej txheem tawv ntawm cov hlau no raug txwv los ntawm cov txheej txheem carburizing mus rau qhov tob tshaj plaws ntawm 1.2 hli, uas kuj yog qhov zoo ntawm tus nqi qis ntawm cov hlau no.
Cov khoom siv hlau tsis xeb suav nrog German stainless hlau X46Cr13, Tuam Tshoj stainless hlau 4Cr13, thiab lwm yam. Cov ntaub ntawv no muaj qhov ruaj khov thiab tawv dua, qhov nyuaj kho cua sov dua li cov hlau carburized, cov txheej tawv dua li cov hlau carburized, thiab kev hnav thiab kev tiv thaiv corrosion zoo, ua rau lub neej ntev dua thiab tus nqi siab dua li cov hlau carburized. Vim yog lub neej ntev ntawm cov hlau stainless hlau tuag, qhov zaus hloov pauv tsawg thiab yog li tus nqi ib tuj qis.
Feem ntau, cov khoom siv tuag rau lub nplhaib tuag pellet zeb yog cov hlau sib xyaw ua ke thiab cov khoom siv hlau tsis xeb.
2.Compression ratio ntawm pellet zeb tuag
kuv = d/L
T=L+M
M yog qhov tob ntawm qhov txo qis
Qhov piv ntawm kev sib zog (i) yog qhov sib piv ntawm txoj kab uas hla ntawm lub qhov tuag (d) thiab qhov ntev ntawm lub pwm (L).
Raws li qhov xwm txheej ntawm cov khoom siv raw, qhov sib piv yog 8-15, Tus neeg siv xaiv qhov sib piv ntawm cov pwm, thiab kho qhov sib piv ntawm cov pwm tshwj xeeb, xws li xaiv qhov sib piv qis dua me ntsis, uas yog qhov zoo rau kev nce cov zis, txo kev siv zog, txo qhov hnav ntawm lub nplhaib pwm, tab sis kuj txo qhov zoo ntawm cov khoom me me, xws li cov pellets tsis muaj zog txaus, qhov tsos yog xoob thiab qhov ntev yog txawv, thiab tus nqi hmoov yog siab.
3.Qhov qhib ntawm lub nplhaib tuag
Qhov qhib ntawm lub pwm pellet yog qhov sib piv ntawm tag nrho thaj chaw ntawm lub qhov pwm rau thaj chaw tag nrho ntawm lub pwm. Feem ntau, qhov qhib ntawm lub pwm siab dua, qhov tso zis ntawm cov khoom me me siab dua. Raws li lub hauv paus ntawm kev ua kom lub zog ntawm lub pwm, qhov qhib ntawm lub pwm nplhaib tuaj yeem txhim kho kom deb li deb tau.
Rau qee cov ntaub ntawv raw, nyob rau hauv qhov xwm txheej ntawm qhov sib piv tsim nyog, lub phab ntsa tuag pellet yog nyias dhau, yog li lub zog tuag tsis txaus, thiab qhov tshwm sim ntawm kev tawg tuag yuav tshwm sim hauv kev tsim khoom. Lub sijhawm no, qhov tuab ntawm lub nplhaib tuag yuav tsum tau nce raws li qhov kev ntseeg siab ntawm kev ua kom ntev ntawm lub qhov tuag.
4.Kev sib phim ntawm pellet zeb tuag thiab cov menyuam
Nws yog cov thev naus laus zis tseem ceeb tshaj plaws los txhim kho qhov ua tau zoo ntawm kev ua granulation thiab ua kom lub neej ntawm lub pwm ntev dua. Nws yuav tsum muaj 4 yam:
- Lub nplhaib tuag tshiab nrog lub log siab tshiab, tsis txhob siv lub log siab ntau dhau.
- Raws li qhov xwm txheej ntawm cov ntaub ntawv, hom tshuab yam ntxwv ntawm kev xaiv ntawm ntau hom ntawm lub siab roller, txhawm rau ua tiav qhov zoo tshaj plaws extrusion efficiency ntawm lub pwm thiab yob.
- Tus yuam sij rau qhov sib txawv yog qhov ruaj khov thiab lub hauv paus ntsiab lus yog: sim so kom txaus yam tsis cuam tshuam rau lub peev xwm.
- Tswj qhov ceev ntawm kev pub mis, kho qhov ntev thiab luv ntawm qhov pub mis scraper kom tswj tau qhov chaw pub mis, kev faib cov txheej khoom.
5.Kev ua cov txheej txheem pellet zeb tuag
Cov qhov tuag ntawm lub nplhaib yog qhov nyuaj heev rau kev ua thiab cov khoom siv ua, thiab rau cov hlau tsis xeb, yuav tsum muaj cov cuab yeej tshwj xeeb thiab cov khoom siv kho cua sov los tsim cov tuag zoo. Cov txheej txheem quenching hauv qhov kub siab zoo heev tuaj yeem txhim kho qhov ruaj khov, qhov nyuaj, kev tiv thaiv kev sib txhuam, lub zog qaug zog thiab kev tawv ntawm cov hlau. Txawm li cas los xij, lub peev xwm los lav qhov sib npaug ntawm cov txheej txheem nyuaj rau txhua lub qhov tuag yuav tsum muaj kev txawj ua haujlwm siab thiab kev paub dhau los ntev.
6.Qhov roughness ntawm qhov tuag ntawm phab ntsa sab hauv ntawm lub qhov tuag
Qhov roughness ntawm qhov chaw kuj yog ib qho cim qhia tseem ceeb ntawm qhov zoo ntawm lub nplhaib pwm. Feem ntau, qhov me me ntawm qhov roughness ntawm phab ntsa sab hauv yuav ua rau qhov zoo ntawm qhov haum, txo qhov hnav thiab ntev lub neej ntawm lub nplhaib pwm, tab sis tus nqi ntawm kev ua lub nplhaib pwm yuav nce ntxiv.
Qhov roughness ntawm lub nplhaib qhov kuj cuam tshuam rau qhov sib piv ntawm kev sib tsoo thiab kev tsim cov khoom me me, nrog rau kev ua haujlwm zoo ntawm cov khoom. Ntawm tib qhov sib piv ntawm lub nplhaib tuag, qhov roughness qis dua, qhov tsis kam ntawm cov ntoo chips lossis pub mis qis dua, qhov kev tawm mus du dua, qhov zoo ntawm cov pellets tsim tau zoo dua thiab qhov ua haujlwm zoo dua. Kev ua tiav qhov zoo ntawm lub nplhaib tuag tuaj yeem txog li 0.8-1.6 microns, qhov roughness ntawm lub nplhaib tuag yog li 0.8 microns, lub tshuab raug rau cov khoom siv pov tseg, tsis muaj kev sib tsoo.
