Melag ya asero ya tubo ed loob na dingding ya makinan panag-sandblasting

Melag ya asero ya tubo ed loob na dingding ya makinan panag-sandblasting
Saray manunan panag-alwar parad proseso na panag-sandblasting ed loob na dingding na saray melag a diametro na asero iran tubo (DN200 tan abeba ni, lalo la ed 30-200mm ya melag a diametro)
Parad melag iran tubo ya asero, say espasyo ed loob na dingding et mainget, mairap ya ipuesto so ulo na paltog ed sentro, tan wala ray problema a singa say pakabaraan na buer / ag-akasabi ed sanding / abrasive embedding. Say interon proseso manlapud pampili na inner wall sandblasting machine parad melag iran diametro, panangontrol ed parametro, estandarte ed operasyon, tan pangipaliis ed peligro et kaukolan ya istrikton kontrolen:
1. Say pampili tan pangiparaan na makina ed loob na dingding (say manunan nakaukolan, say pampili na lingon kagawaan et manresulta ed inkagba)
Pantutunosan na espisyal iran kagawaan
Kaukolan so manpili na dedikadon inner wall sandblasting gun parad melag iran diametro: pilien so mipetekan a modelo unong ed diametro na tubo, a singa say SY-50 parad 35-75mm a diametro, SY-100 parad 50-200mm a diametro.
Say nozzle et nepeg ya gawad tungsten steel (say resistensya to et 3-5 beses nen say boron carbide), tan say φ6-8mm ya melag a diametro na nozzle et usaren parad melag a diametro na tubo pian ag-onsabit so ulo na paltog ed tubo.
Konpigurasyon na lapuan na dagem: say volume na tambutso na air compressor et nepeg ya mas baleg odino mipara ed 6m3/min (sakey a paltog), tan say taloran-stage ya oil-water separator (filter accuracy Less o mipara ed 0.1μm) et nepeg ya walay - danum ed compressed air ed ulo na paltog ya pansengegan na pan-clog tan pan-clog na ulo na paltog akabara, ya saya so sankabaloan ya panlalapuan na inkagba na melag a diametro na sandblasting.
Workpiece tan abrasive pre-treatment
Steel pipe pre-cleaning: unona, mano-mano ya ekalen iray angkakabaleg a piraso na welding slag, oxide scale, tan saray debris ed tubo pian ag-onbara so ulo na paltog odino ag-onkupas so loob na dingding legan na sandblasting.
Kontrol ed abrasive: pilien so 0.3-0.8mm ya pino-grained abrasive (mas labay so steel balls / brown corundum, tan sebel so angkakabaleg iran partikulo > 1mm), say abrasive et nepeg ya pamaraan tan salaan pian naekal so dabok tan debris - say loob na espasyo na melag a diametro na tubo et limitado, tan 10% na angkakabaleg a partikulo so pansengegan na damp o damp ulo na paltog ya nabaraan.
2. Eksakton panangontrol ed saray parametro na proseso na sandblasting machine ed loob na dingding
Presyur ed trabaho: 0.5-0.6MPa (say aktual a presyon ed nozzle et 0.35-0.5MPa).
Kapeles na igagalaw na ulo na paltog: 0.5-1m/min (pareho ya ipawil), say masyadon maples et pansengegan na singa strip ya ag-onsabi ed sanding, say masyadon matantan et pansengegan na alablabas ya sanding tan pitting.
Anggulo na paltog: say anggulo ed baetan na sanding head tan say loob na dingding na tubo et 15-30 degree: say baleg ya anggulo et pansengegan na alablabas ya sanding ed sakey a diking, say masyadon melag ya anggulo et pansengegan na saray bulag ya lugar parad panaglinis.
Say kapeles na panag-ikot na steel pipe (rotary operation): 10-20r/min, ya inlaok ed axial movement na ulo na paltog, naseguro so 360℃ya unipormi ya sakbong, napaliisan so singa spiral ya ag-onkulang ya sanding bands.
3. Saray totontonen ed panag-operate na makinan pan-sandblasting ed loob na dingding
Say panguman na pantutumbokan (manunan paraan pian ag-onbara so buer)
Igapo -up: unona, pabiskegen so pressure na compressed air → insan lukasan so sand valve (pareho so ompaway ya abrasive);
Isara: unona, isara so balbula na buer → pansiansiaen so suplay na dagem ed loob na 30 segundo → insan patundaen so dagem: papawayen a maong so nakekeraan ya abrasive, dabok, tan debris ed ulo na paltog, nozzle, tan loob na tubo pian ag-onbara tan ag-onbara so nakekeraan a buer.
Saray kakaukolanen ed operasyon na ulo na paltog
Ag ka ontunda ed kapegleyan: say ulo na paltog ya mansiansia ed parehon posisyon ed loob na masulok ya 3 segundo et pansengegan na alablabas ya panag-sanding tan manipis a padir na tubo.
Kaukolan ya gawaen so panagtambal kayari na -
Kayari na sandblasting: 1 mangusar na 0.6MPa ya compressed air pian sigpot ya na-blow so pipe; mangusar na endoscope pian nengnengen iray suyok na tubo pian naseguro ya anggapoy nakekeraan ya buer antis ya iyalis ed proseso na panag-coating.
Apat. De-kalidad ya pangawat tan pakapaliis ed kaslakan a problema
Saray estandarte ed pangawat
Kalinisan: onsabi ed Sa2.5 ya lebel, anggapoy nanengneng ya oxide scale, kalawang, odino welding slag ed loob na dingding, parepareho so kolor na metal ya nanengneng, anggapoy strip-like missed sanding;
Say inka-magaspang na tapew: Ra25-50μm, anggapoy abrasive embedding, anggapoy pitting, anggapoy manipis ya dingding;
Kalinisan: anggapoy nakekeraan ya abrasive, dabok ed tubo, ag makaapekto ed ontumbok ya coating odino medium transportation.
Kaslakan ya pangipaliis ed problema: mabetbet ya nagagawa iran isyu
Abaraan so paltog: say manunan sengegan et say ambetel ya abrasive / angkakabaleg iran partikulo / aliwan suston inkauksoy na panag-shutdown, istrikton tumboken iray abrasive drying tan shutdown norms pian napaliisan so 99% na problema;
Ag-agawa so sanding: maples ya galaw na ulo na paltog legan na operasyon;
Abrasive Embedding: Alablabas ya pressure tan angkakabaleg iran abrasive particles. Parad manipis iran dingding na tubo, say presyon et onleksab ed 0.4-0.5 MPa, tan saray abrasive particles et nepeg ya ag onlampas ed 0.8mm.
Saray Gasgas ed Loob na Padir: Say nozzle et onpeket ed dingding na tubo, tan wala ray aliwan bengatla ed loob na tubo. Kaukolan so sigpot a pre-treatment pian nalinisan a maong so tubo tan naseguro ya akasentro so nozzle.
V. Kakaukolanen ed Kaligenan tan Kaliberliber
Proteksion ed Personal: Say dabok manlapud melag-diametro na sandblasting na tubo et posiblin mantipon ed loob na tubo. Saray operator et nepeg ya mansulong na positive pressure respirators tan malet ya sebel ya mangusar na ordinaryon mask; say italindeg ya diretso ed arap na tubo et sebel pian napaliisan so itatagey na buer tan nasugatan iray totoo.
Kontrol ed Kaliberliber: Kaukolan ya walay kagawaan na sistema na bentilasyon tan panag-ekal na dabok ed loob na tubo (ya say dagem et masulok odino mipara ed 5000 m3/h). Say hose ya pangekal na dabok et nepeg ya ikonekta ed sampot na sandblasting, tan say sananey a sampot et nepeg ya selyadoan pian ag-onorganisa so dabok ya ompaway; saray abrasive particles et nepeg ya kolektaen ed sentro tan ag nepeg ya ibantak ya ag-iilaloan.
Kaligtasan na Kagawaan: Say pressure gauge tan safety valve na air compressor et nepeg ya binulan ya i-calibrate, tan say sandblasting hose et nepeg ya regular ya inspeksionen no walay uusaren to pian napaliisan so high-pressure burst tan injury.