Isiphene sokonakala kumbhobho oqhubekayo oqengqelekayo ongenamthungo ukhona kumphezulu ongaphakathi wombhobho wentsimbi, ofana nomngxuma wobukhulu beenkozo zesoya. Uninzi lweziva zinombala ongwevu-mdaka okanye ongwevu-mnyama. Imiba ephembelelayo ye-scarring yangaphakathi ibandakanya: i-deoxidizer, inkqubo yokutofa, i-mandrel lubrication kunye nezinye izinto. Masilandele umenzi wetyhubhu yentsimbi yekhabhoni ukuze sibone indlela yokulawula iziphene zangaphakathi zeetyhubhu zentsimbi ezingenamthungo:

1. I-Deoxidizer

I-oksidi iyafuneka ukuba ibe kwimo etyhidiweyo xa i-mandrel ihlatywa ngaphambili. Amandla ayo kunye nezinye iimfuno ezingqongqo.

I-1) Ubungakanani be-particle ye-powder deoxidizer ifunwa ngokubanzi ukuba ibe malunga ne-16 mesh.
I-2) Umxholo we-sodium stearate kwi-agent ye-scavenging kufuneka ifinyelele ngaphezu kwe-12%, ukwenzela ukuba inokutshisa ngokupheleleyo kwi-lumen ye-capillary.
I-3) Qinisekisa inani le-injection ye-deoxidizer ngokubhekiselele kwindawo yangaphakathi ye-capillary, ngokubanzi i-1.5-2.0g / dm2, kunye nomlinganiselo we-deoxidizer efafazwe yi-capillary kunye nobude obuhlukeneyo kunye nobude obuhlukeneyo.

2. Iiparamitha zenkqubo yokutofa

I-1) Uxinzelelo lwe-injection kufuneka luhambelane nobubanzi kunye nobude be-capillary, engaqinisekisi kuphela ukuvuthela okunamandla kunye nokutshisa okwaneleyo, kodwa iphinde ithintele i-scavenger etshiswa ngokungaphelelanga ukuba ikhutshwe kwi-capillary yi-airflow.
I-2) Ixesha lokuhlanjululwa komenzi wepayipi yensimbi engenamthungo kufuneka lihlengahlengiswe ngokuhambelana ngokuthe ngqo kunye nobude be-capillary, kwaye umgangatho kukuba akukho oxide yensimbi emisiweyo kwi-capillary ngaphambi kokuba ikhutshwe.
I-3) Ukuphakama kwe-nozzle kufuneka kulungiswe ngokuhambelana nobubanzi be-capillary ukuqinisekisa ukugxila okulungileyo. Umbhobho kufuneka ucocwe kanye kwishifti nganye, kwaye umlomo kufuneka ususwe ukucoca emva kokuvala ixesha elide. Ukuqinisekisa ukuba i-agent ye-deoxidizing ivuthelwa ngokulinganayo kudonga lwangaphakathi lwe-capillary, isixhobo esikhethiweyo sisetyenziselwa kwisikhululo sokuvuthela i-agent ye-deoxidizing, kwaye ixhotyiswe ngoxinzelelo lomoya ojikelezayo.

3. Mandrel lubrication

Ukuba isiphumo sokuthambisa mandrel ayilunganga okanye lobushushu mandrel lubricant liphantsi kakhulu, scarring lwangaphakathi kuya kwenzeka. Ukuze kwandiswe ubushushu be mandrel, enye kuphela indlela yokupholisa amanzi okupholisa inokwamkelwa. Ngethuba lenkqubo yokuvelisa, kuyimfuneko ukulawula ngokungqongqo ubushushu be-mandrel ukuqinisekisa ukuba ubushushu bomhlaba we-mandrel ngu-80-120 ° C ngaphambi kokutshiza i-lubricant, kwaye ubushushu be-mandrel akufanele bube ngaphezu kwe-120 ° C. ixesha elide, ukuze kuqinisekiswe ukuba i-lubricant kumphezulu yomile kwaye ixinene phambi kokugqobhoza kwangaphambili , Umsebenzisi kufuneka ahlale ejonga imeko yokuthambisa i-mandrel.