Chiyambi chaKuphulika kwa mchenga

Mawu akuti sandblasting amatanthauza kuphulika kwa zinthu zowononga pamwamba pogwiritsa ntchito mpweya woponderezedwa. Ngakhale kuti sandblasting nthawi zambiri imagwiritsidwa ntchito ngati ambulera panjira zonse zophulitsa zowononga, imasiyana ndi kuwomberedwa komwe kumayendetsedwa ndi gudumu lozungulira.

Kuphulika kwa mchenga kumagwiritsidwa ntchito kuchotsa utoto, dzimbiri, zinyalala, zokanda ndi zoponyera pamwamba koma kungathenso kuchita zosiyana ndi zokometsera malo kuti awonjezere maonekedwe kapena mapangidwe.

Mchenga sugwiritsidwa ntchito kawirikawiri popanga mchenga masiku ano chifukwa cha kuopsa kwa thanzi komanso mavuto okhudzana ndi chinyezi. Njira zina monga grit yachitsulo, mikanda yagalasi ndi aluminiyamu okusayidi tsopano zimakondedwa pakati pa mitundu ina yambiri yazowombera.

Kuphulika kwa mchenga kumagwiritsa ntchito mpweya woponderezedwa poyendetsa zinthu zowononga, mosiyana ndi kuphulika kwa mfuti, komwe kumagwiritsa ntchito makina ophulika ndi ma centrifugal mphamvu.

Kodi Sandblasting N'chiyani?

Kuphulika kwa mchenga, komwe nthawi zambiri kumadziwikanso kuti abrasive blasting, ndi njira yomwe imagwiritsidwa ntchito pochotsa kuipitsidwa pamwamba, kosalala malo okhwima, komanso malo osalala bwino. Iyi ndi njira yotsika mtengo chifukwa cha zida zake zotsika mtengo, ndipo ndiyosavuta popereka zotsatira zapamwamba.

Kuphulika kwa mchenga kumaonedwa kuti ndi njira yabwino kwambiri yophulitsira mchenga poyerekeza ndi kuphulika kwa mfuti. Komabe, kulimba kumatha kusiyanasiyana malinga ndi mtundu wa zida zopukutira mchenga, kuthamanga kwa mpweya woponderezedwa, ndi mtundu wa abrasive media omwe amagwiritsidwa ntchito.

Sandblasting imapereka mitundu yambiri ya abrasive zipangizo zomwe zimagwira ntchito zosiyanasiyana, monga kuchotsa utoto ndi kuipitsidwa kwa pamwamba komwe kumakhala kopepuka kwambiri. Njirayi ndi yabwinonso kuyeretsa zida zamagetsi zamagetsi ndi zolumikizira zowonongeka mosamalitsa. Ntchito zina zophulitsa mchenga zomwe zimafuna mphamvu yophulitsa yokulirapo zitha kugwiritsa ntchito makonda amphamvu kwambiri komanso zowulutsa zowopsa.

Kodi Njira Yopangira Mchenga Imagwira Ntchito Motani?

Njira yopangira mchenga imagwira ntchito poyendetsa makina opangira mchenga pamwamba pogwiritsira ntchito sandblaster. Sandblaster ili ndi zigawo ziwiri zazikulu: poto yophulika ndi mpweya wolowa. Mphika wophulika umakhala ndi zophulika zomwe zimaphulika ndikumangirira tinthu kudzera mu valve. Kutengera kwa mpweya kumayendetsedwa ndi air compressor yomwe imagwiritsa ntchito kukakamiza kwa media mkati mwa chipindacho. Imatuluka pamphuno pa liwiro lalikulu, kukhudza pamwamba ndi mphamvu.

Sandblast imatha kuchotsa zinyalala, kuyeretsa malo, kuchotsa utoto, ndikuwongolera kutha kwa zinthuzo. Zotsatira zake zimadalira kwambiri mtundu wa abrasive ndi katundu wake.

Zida zamakono za sandblast zili ndi dongosolo lobwezeretsa lomwe limasonkhanitsa zofalitsa zomwe zimagwiritsidwa ntchito ndikudzazanso mphika wophulika.

Zida Zopangira Mchenga

Compressor - The Compressor (90-100 PSI) imapereka mpweya woponderezedwa womwe umapangitsa kuti ma abrasive apite pamwamba pa zinthuzo. Kupanikizika, kuchuluka, ndi mphamvu zamahatchi nthawi zambiri ndizofunikira kuziganizira posankha kompresa yoyenera ya sandblasting.

Sandblaster - Sandblasters (18-35 CFM - ma kiyubiki mapazi pamphindi) amatulutsa zowulutsa pa zinthuzo pogwiritsa ntchito mpweya woponderezedwa. Industrial sandblasters amafuna apamwamba volumetric otaya mlingo (50-100 CFM) monga ali ndi dera lalikulu ntchito. Pali mitundu itatu ya ma sandblasters: odyetsedwa ndi mphamvu yokoka, zophulika (zothamanga zabwino), ndi ma siphon sandblasters (negative pressure).

Blast cabinet - Kabati yophulika ndi malo ophulika omwe ndi ochepa komanso ozungulira. Nthawi zambiri imakhala ndi zigawo zinayi: nduna, makina ophulika abrasive, kubwezeretsanso, ndi kusonkhanitsa fumbi. Makabati ophulika amagwiritsidwa ntchito pogwiritsa ntchito mabowo a glove m'manja mwa wogwiritsa ntchito komanso chopondapo chowongolera kuphulika.

KuphulikaChipinda - Chipinda chophulika ndi malo omwe amatha kukhala ndi zida zosiyanasiyana zomwe zimagwiritsidwa ntchito pazamalonda. Zigawo za ndege, zida zomangira, ndi zida zamagalimoto zitha kuphulika bwino m'chipinda chophulika.

Dongosolo lachiwombankhanga - Zida zamakono zopukutira mchenga zili ndi makina obwezeretsanso omwe amabwezeretsanso ma media a sandblasting. Imachotsanso zonyansa zomwe zitha kuwononga media.

Cryogenic deflashing system - Kutentha kochepa kuchokera kumakina a cryogenic deflashing amalola kuti zinthu ziwonongeke, monga diecast, magnesium, pulasitiki, mphira, ndi zinki.

Zida zophulitsira zonyowa - Kuphulika konyowa kumaphatikiza madzi muzotulutsa zophulika kuti zichepetse kutenthedwa chifukwa cha kukangana. Komanso ndi njira yochepetsera ma abrasion poyerekeza ndi kuphulika kowuma chifukwa imangokolopa malo omwe mukufuna.

Sandblasting Media

Monga momwe dzinalo likusonyezera, mitundu yoyambirira ya sandblasting idagwiritsidwa ntchito makamaka mchenga chifukwa cha kupezeka kwake, koma inali ndi zovuta zake mu mawonekedwe a chinyezi komanso zowononga. Chodetsa nkhawa kwambiri ndi mchenga ngati chotupa ndi kuwopsa kwake paumoyo. Kukoka fumbi la silika kuchokera ku mchenga kungayambitse matenda aakulu a kupuma, kuphatikizapo silicosis ndi khansa ya m'mapapo. Choncho, masiku ano mchenga sugwiritsidwa ntchito kawirikawiri ndipo mitundu yambiri yamakono ya abrasive yalowa m'malo mwake.

Kuphulika kwa media kumasiyana malinga ndi kumalizidwa komwe kumafunidwa kapena kugwiritsa ntchito. Zina zodziwika bwino zowulutsa media ndi:

Aluminium oxide grit (8-9 MH - sikelo ya kuuma kwa Mohs) - Chiphuphu ichi ndi chakuthwa kwambiri chomwe ndi choyenera kukonzekera ndikuchiza pamwamba. Ndiwotsika mtengo chifukwa ukhoza kugwiritsidwanso ntchito nthawi zambiri.

Aluminiyamu silicate (malasha slag) (6-7 MH) - Izi zopangidwa ndi magetsi opangira malasha ndizotsika mtengo komanso zogwiritsidwa ntchito. Makampani amafuta ndi oyendetsa zombo amawagwiritsa ntchito pophulika poyera, koma ndi poizoni ngati akhudzidwa ndi chilengedwe.

Magetsi ophwanyidwa (5-6 MH) - Kuphulika kwa grit yagalasi kumagwiritsa ntchito mikanda yagalasi yobwezerezedwanso yomwe ilibe poizoni komanso yotetezeka. Chowulutsira mchengachi chimagwiritsidwa ntchito kuchotsa zokutira ndi kuipitsidwa pamalo. Magalasi ophwanyidwa angagwiritsidwenso ntchito bwino ndi madzi.

Soda (2.5 MH) - Kuphulika kwa soda ndi kothandiza pochotsa dzimbiri lachitsulo ndikuyeretsa pamalo osawononga chitsulo pansi. Sodium bicarbonate (soda wophika) imayendetsedwa ndi mphamvu yotsika ya 20 psi poyerekeza ndi kuphulika kwa mchenga nthawi zonse pa 70 mpaka 120 psi.

Grit grit & chitsulo chowombera (40-65 HRC) - Ma abrasives achitsulo amagwiritsidwa ntchito pokonzekera pamwamba, monga kuyeretsa ndi kutsekemera, chifukwa cha kuvula kwawo mofulumira.

Staurolite (7 MH) - Kuphulika kwa media kumeneku ndi silicate yachitsulo ndi mchenga wa silika yomwe ili yabwino kuchotsa malo owonda ndi dzimbiri kapena zokutira. Nthawi zambiri amagwiritsidwa ntchito popanga zitsulo, kupanga nsanja, komanso zotengera zocheperako zosungira.

Kuphatikiza pa media zomwe tatchulazi, pali zina zambiri zomwe zikupezeka. Ndizotheka kugwiritsa ntchito silicon carbide, yomwe ndi njira yovuta kwambiri yolumikizirana yomwe ilipo, komanso kuwombera kwachilengedwe, monga zipolopolo za mtedza ndi zitsononkho za chimanga. M’mayiko ena, mchenga ukugwiritsidwabe ntchito mpaka pano, koma mchitidwewu ndi wokayikitsa chifukwa kuopsa kwake kwa thanzi sikoyenera.

Shot Media Properties

Mtundu uliwonse wa media wowombera uli ndi zinthu 4 zazikuluzikulu zomwe ogwiritsa ntchito angaganizire posankha zomwe angagwiritse ntchito:

Mawonekedwe - Angular media ali ndi mbali zakuthwa, zosakhazikika, zomwe zimapangitsa kuti zitheke kuchotsa utoto, mwachitsanzo. Round media ndiyowopsa kuposa media media ndipo imasiya mawonekedwe opukutidwa.

Kukula - Kukula kwa ma mesh wamba kwa sandblasting ndi 20/40, 40/70, ndi 60/100. Ma profiles akulu akulu amagwiritsidwa ntchito mwaukali pomwe ma mesh ang'onoang'ono amatsuka kapena kupukuta kuti apange chinthu chomaliza.

Kachulukidwe - Media yokhala ndi kachulukidwe wapamwamba imakhala ndi mphamvu zambiri pamwamba pazitsulo pomwe imayendetsedwa ndi payipi yophulika pa liwiro lokhazikika.

Kuuma - Kulimba abrasives amapanga chikoka chokulirapo pamtunda poyerekeza ndi ma abrasives ofewa. Kulimba kwa media pazolinga zophulitsa mchenga nthawi zambiri kumayesedwa kudzera mu sikelo ya Mohs hardness (1-10). Mohs amayesa kuuma kwa mchere ndi zinthu zopangira, zomwe zikuwonetsa kukana kwa mchere wosiyanasiyana kudzera pakutha kwa zida zolimba kukanda zinthu zofewa.