Kutheni imigca emnyama ibonakala ngokuphindaphindiweyo kwi-extruder? Eli nqaku likufundisa ukuba ukhawuleze uqonde ukuba ingaba ibangelwa yingxaki yombhobho okanye isikrufu.

Imigca emnyama rhoqo kwi-extruders ibangelwa ikakhulu kungcoliseko lwempahla ekrwada, iidiphozithi zekhabhoni kwisixhobo, kunye nezinto ezinxitywayo. Le miba ifuna ukuphandwa kunye nokufunyanwa ngokwala manyathelo angezantsi.

1. Imiba ekrwada kunye nezinto ezincedisayo

Lo ngoyena nobangela uqhelekileyo kwaye kufuneka ubekwe phambili.

Ukungcola kwempahla ekrwada: Izinto ezimnyama zangaphandle, ezinjengothuli, inkunkuma yesinyithi, okanye ezinye ii-masterbatches, zinokungeniswa kwimathiriyeli ekrwada ngexesha lemveliso, ukugcinwa, okanye ukuthuthwa.

Ukufuma kwezinto ezikrwada okanye ukuthotywa: Ukufuma okugqithisileyo kwizixhobo ezikrwada kunokukhokelela kwicarbonization ngexesha lobushushu obuphezulu, okukhokelela kumanqaku amnyama. Ukuthotywa kokugcinwa kwexesha elide kunokubangela ukubunjwa kwezinto ezitshatyalaliswayo ezimnyama.

I-Masterbatch okanye imiba eyongezelelweyo: Ukusasazwa kakubi kwe-masterbatch kunokubangela amasuntswana amnyama aglomerated. Ukongezwa okugqithisileyo kwezongezo (ezifana ne-antioxidants) kunokukhokelela kwi-carbonization kwiqondo lokushisa eliphezulu.

2. Iidiphozithi zeCarbon ngaphakathi kwesixhobo: Emva kokusetyenziswa kwexesha elide, izinto eziseleyo zinokuhlala lula kwi-barrel, screw, okanye isikhunta, ekhokelela kwi-carbonization kunye nokwakhiwa kwemigca emnyama.

Ukucocwa okungaphelelanga ngexesha lokuphumla: Izinto eziseleyo kwi-barrel kunye ne-screw azicocwa ngokupheleleyo emva kokubaleka kwangaphambili. Xa umatshini uqaliswa kwakhona, le nto eseleyo i-carbonizes kumaqondo okushisa aphezulu kwaye ixube kunye nezinto ezintsha. Izicwangciso zeparameter yemveliso engafanelekanga: Ukushisa kwe-Extrusion kuphezulu kakhulu, kudlula iqondo lokushisa lokuzinza kwe-thermal yezinto eziluhlaza, ezibangela ukushisa kunye ne-carbonization kwi-barrel.

Isantya se-Screw esingafaniyo nesantya sokutya: Isantya sokutya sicotha kakhulu, ngelixa isantya se-screw sikhawuleza kakhulu, sibangela ukuba izinto zihlale emgqomeni ixesha elide, okukhokelela ekuthotyweni kwe-thermal kunye ne-carbonization.

3. Amacandelo eZixhobo aNxitywayo okanye aFaile

Ubutyobo besinyithi obuvela kwiindawo ezigugileyo okanye ubumdaka obuvezwa ngamatywina awonakeleyo bunokubangela imigca emnyama.

I-Screw kunye ne-Barrel Wear: Emva kokusetyenziswa kwexesha elide, umsantsa phakathi kweScrew kunye nomgqomoukwanda, okwenza kube lula ukuba izinto zibanjwe kunye nekhabhoni kwi-gap. I-Metal powder eyenziwa ngokunxiba inokuxuba kwizinto eziphathekayo, zenze imigca emnyama.

Iingxaki ze-Mold: Iidiphozithi zekhabhoni okanye imikrwelo kwijelo lokuhamba kwe-mold kunokubangela ukuba izinto zibanjwe kunye ne-carbonized ngexesha lokuhamba. Izitywina zokubumba ezonakalisiweyo zinokuvumela ukungcola kwangaphandle ukuba kungene kumjelo wokuhamba.

I-Clog ye-Filter okanye Umonakalo: Izihlungi ezinyibilikayo ezingakhange zitshintshwe ixesha elide ziyakwazi ukuvaleka, ezikhokelela ekuhambeni okungahambi kakuhle kwezinto kunye nokushisa kwendawo kunye ne-carbonization. Izihluzi ezonakeleyo zinokuvumela ukungcola ukuba kungene kubumba ngokuthe ngqo. Kucetyiswa ukuba kujongwe ngokulandelelana kwe "izinto eziphathekayo → ukucoca izixhobo → ukuhlolwa kwezixhobo". Okokuqala buyisela ibhetshi yezixhobo ezintsha zovavanyo. Emva kokuphelisa ingxaki yempahla ekrwada, qhafaza kwaye ucoce umgqomo, jija kunye nokungunda, kwaye ekugqibeleni ujonge ubume bezesekeli ezifana ne-screw kunye nesihluzo.

Njengoko iplastiki inyibilika idlula yonke inkqubo yokuhambisa, ukucinezela, kunye nokunyibilika ngaphakathiisikrufu, kwanezona ntsilelo zincinane zinokuba yindawo yokuzalela imigca emnyama. Uburhabaxa bomphezulu obuqhelekileyo kwizikrufu eziqhelekileyo zenza kube lula ukuba izinto zivalelwe kwizithuba zemisonto ngexesha lokujikeleza ngesantya esiphezulu. Oku, kunye nokufudumeza okuphindaphindiweyo, kwenza iimveliso ezivuthayo, ekugqibeleni zibangele imivimbo emnyama kwimveliso egqityiweyo.

Ukukhethwa kwezinto eziphathekayo nako kubalulekile. Izikrufu zethu zenziwe ngentsimbi ekumgangatho ophezulu eyi-38CrMoALA nitrided alloy. Oku kungena kunyango lweentsuku ezisixhenxe zokucinywa kunye ne-nitriding, okukhokelela kwi-0.50-0.70mm engqingqwa ye-nitrided layer kunye nokuqina komphezulu we-HV950-1050. Ezi mpawu ezibonakalayo ziqinisekisa ukuxhathisa okugqwesileyo kokunxiba nakumaqondo obushushu ajikeleze i-200 ° C, ukwandisa ubomi benkonzo yesikrufu ubuncinane ngesinye kwisihlanu xa kuthelekiswa neemveliso eziqhelekileyo. Oku kuthintela ukwakheka kwemathiriyeli kwiikona ezifileyo ngenxa yokuguga komphezulu wokusetyenziswa okwandisiweyo.

Ngomatshini ochanekileyo, isikrufu sifezekisa umphezulu womgangatho wesipili weRa0.4 microns, amaxesha amaninzi aphezulu kunomgangatho weshishini. Oku kuguqulela kumahluko wobude obungekho ngaphezulu kwe-0.4 ye-microns nge-millimeter yobude bomphezulu we-screw, nje i-1/200 yedayamitha yeenwele zomntu. Lo mgangatho we-ultra-smooth unciphisa kakhulu umngcipheko wokugcinwa kwezinto kwaye uphelise umendo we-black streaks kwindawo yokuqala.