Zvishandiso zveTwin-screw extruders ndizvo michina inoshanda zvakanyanya mukugadzira zvinhu zvakasiyana-siyana, uye kushanda kwavo kwepamusoro uye kugona kwavo kugadzirisa zvinhu ndizvo zvakanakira nzvimbo yavo. Zvinogona kusanganisa zvinhu zvakasiyana-siyana zvinowedzerwa uye zvinozadza kuti zviwane maumbirwo akasiyana epellet uye hunhu hwakasiyana nekushanda kwakasiyana.
Kunyange zvazvo zvinhu zvakasiyana-siyana zvinowedzerwa uye zvinozadza zvichigona kugadziriswa kuti zvibudiswe, dzimwe nzira dzekuwana zvigadzirwa izvi dzinogonawo kukonzera matambudziko ekusvibiswa uye kuyerera kushoma kana kumanikidzwa kwakaderera munzvimbo dzakawanda mubhari.
Mukuita kwakadai sekuburitsa zvinhu muvhu, kusvibiswa kunogona kuva nemigumisiro yakaipa. Kubvisa zvinhu muvhu kunowanzova kwakaoma kupfuura mamwe maitiro, uye zvinhu zvinoburitsa zvinhu muvhu zvine screw mbiri zvinosangana nematambudziko makuru nekuti sisitimu yacho yakaoma kupfuura chinhu chinoburitsa zvinhu muvhu chine screw imwe chete.
Kutanga, ngatitarisei nzira dzekuchenesa dzinoshandiswa nemidziyo yekubvisa screw mbiri.
Nzira yekuchenesa resin:
Kushandisa polyester resin kana epoxy resin pakuchenesa kunowanzo shandiswa pakuchenesa michina mitsva kana mushure mekunge extruder yashandiswa kwenguva yakati, nekuti zvimwe zvinhu zvinoramba zviri pa screw kana barrel ne gel, kumhanya kwe extrusion yezvinhu kunoderera, uye musiyano wemavara emhando yekuchinja kwemavara wakakura. Nzira iyi inogona kushandiswa. Nhasi, nehupfumi hwezvinhu zvakagadziridzwa zvakanyanya, hapana kushomeka kwe screw cleaners dzakasiyana-siyana (screw cleaning materials) dziri pamusika, dzakawanda dzacho dzinodhura uye dzine mhedzisiro yakasiyana.
Kuti michina yekuchenesa yekutengeserana inofanira kushandiswa here zvichienderana nevagadziri vakasiyana uye mamiriro ekugadzira; makambani ekugadzira mapurasitiki anogonawo kushandisa maresini akasiyana sezvinhu zvekuchenesa screw zvichienderana nemamiriro avo ekugadzira, izvo zvinogona kuchengetedza mari yakawanda yeyuniti.
Danho rekutanga pakuchenesa sikuruu kudzima chivharo chekudyisa, ndiko kuti, kuvhara nzvimbo yekudyisa iri pasi pehopper; wobva waderedza kumhanya kwesikuruu kusvika pa15-25r/min woramba uchimhanya kusvika mvura yanyunguduka kumberi kwediye yamira kuyerera. Tembiricha yenzvimbo dzese dzekudziisa dzebhare inofanira kuiswa pa200°C. Kana bhare rasvika patembiricha iyi, tanga kuchenesa nekukasika.
Zvichienderana nemaitiro ekubvisa (zvingave zvakakosha kubvisa die kuderedza njodzi yekumanikidzwa kwakanyanya kumberi kwe extruder), kuchenesa kunofanirwa kuitwa nemunhu mumwe chete: mushandi anoongorora kumhanya kwesikuruu uye torque kubva pane control panel, uye anoongorora kumanikidzwa kwe extrusion kuti ave nechokwadi chekuti kumanikidzwa kwesystem hakuna kukwira zvakanyanya. Munguva yese yekuita, kumhanya kwesikuruu kunofanirwa kuchengetwa mukati me 20r/min. Pakushandisa misoro ye die ine low pressure, usabvisa die head kuti uchenese kutanga. Mira wobvisa die head ipapo ipapo kana extrudate yashandurwa zvachose kubva pa processing resin kuenda ku cleaning resin, wobva watangazve sikuruu (speed mukati me 10r/min) kuti resin yekuchenesa yasara ibude.
Gwaro rekubvisa:
1. Wedzera zvinhu zvekuwachisa nemaoko kubva paburi rekuburitsa mvura kusvika ruvara rwechinhu chakaburitswa rwafanana nerwemapellets ezvinhu zvekuwachisa, rega kudyisa, bvisa zvinhu zvese, uye misa kutenderera kwescrew extruder ine screw mbiri;
2. Vhura musoro wedhiraivha ye screw extruder wotanga kuchenesa;
3. Tendeudza sikuruu yekubvisa sikuruu ine screw mbiri wobvisa ndiro ye orifice kuti ubudise zvinhu zvakasara zvekuwachisa mubharero wochenesa ndiro ye orifice;
4. Mira woburitsa sikuruu kuti uone kana yacheneswa, wobvisa nemaoko zvinhu zvasara pasikuruu. Isazve sikuruu; wedzera zvinhu zvitsva kuti usuke zvinhu zvasara mubhare uye umise kutenderera kwesikuruu;
- Isa plate ye orifice nemusoro we die we twin-screw extruder kuti upedzise basa rekuchenesa twin-screw extruder.
Nzira yekuchenesa yakapiswa nemoto:
Kushandisa moto kana kugocha kubvisa purasitiki yakasungirirwa pa screw ndiyo nzira inonyanya kushandiswa uye inoshanda pakugadzira mapurasitiki. Shandisa blowtorch kuchenesa screw nekukurumidza mushure mekushandisa, nekuti panguva ino screw inotakura kupisa kubva pakugadzirisa, saka screw. Kupararira kwekupisa kuchiri kwakafanana. Asi usamboshandisa acetylene flame kuchenesa screw. Tembiricha ye acetylene flame inogona kusvika 3000°C. Kushandisa acetylene flame kuchenesa screw hakungoparadzi hunhu hwesimbi hwe screw chete, asiwo kunokanganisa zvakanyanya kushivirira kwe screw.
Kana murazvo weacetylene ukashanduka kuita ruvara rwebhuruu runogara kwenguva refu kana uchibika chimwe chikamu chesikuruu, zvinoreva kuti chimiro chesimbi chechikamu ichi chesikuruu chachinja, izvo zvichaita kuti chikamu ichi chisanyanya kusimba, uye kunyange kukuvadzwa pakati pechikamu chinodzivirira kupwanyika uye matrix. Kukwesha simbi. Pamusoro pezvo, kupisa kwemuno nemurazvo weacetylene kuchaitawo kuti pave nekupisa kwakanyanya kune rumwe rutivi rwesikuruu, zvichiita kuti sikuruu ikotama. Mazhinji masikuruu akagadzirwa nesimbi ye4140.HT uye ane simba rakasimba, kazhinji mukati me0.03mm.
Kutwasuka kwescrew kunonyanya kuva mukati me 0.01mm. Kana screw yabikwa uye yatonhodzwa ne acetylene flame, zvinowanzova zvakaoma kudzokera pakutwasuka kwepakutanga. Nzira yakarurama uye inoshanda: Shandisa blowtorch kuchenesa screw nekukurumidza mushure mekushandisa. Nekuti screw inotakura kupisa kubva mukugadzirisa panguva ino, kugoverwa kwekupisa kwescrew kuchiri kwakafanana.
Nzira yekugeza nemvura:
Kusuka sikuruu: Muchina wekusuka sikuruu unoshanda otomatiki unoshandisa simba rekutenderera kwemvura uye simba rekuita rekutenderera sikuruu kuti uwane 360-degree stripping isina maengeli akapfava. Unoshanda zvakanaka uye haukuvadzi chimiro chesikuruu. Unoita tekinoroji itsva yekuchenesa sikuruu nenzira isingakuvadzi nharaunda, inoshanda uye inochengetedza simba. Wakakodzera kubvisa nekumanikidza uye kubvisa zvinhu zvakasiyana-siyana zvepolymer, saka inyanzvi yekugadzira green ine mhedzisiro yakanaka yekuchenesa.
Nguva yekutumira: Chikumi-07-2024