Kukanda Polyurethane Rubber
Casting polyurethane rubber inzira yakakurumbira inoshandiswa nevagadziri kugadzira zvigadzirwa zvinogara uye zvinochinjika. Maitiro acho anosanganisira kusanganisa maviri emvura zvikamu, iyo polyol uye isocyanate, pamwe chete muzvikamu zvakaringana. Musanganiswa uyu unozodirwa muforoma kana mhango umo unoomesa nekurapa nekufamba kwenguva.
Kuti tive nechokwadi chekukanda kunobudirira, zvakakosha kutevedzera kuchengetedzwa kwakakodzera sekupfeka magirovhosi ekudzivirira uye zvipfeko zvemaziso, kushanda munzvimbo ine mhepo inofefetera, uye kutevera mirairo yevagadziri pakubata makemikari. Iyo mold inofanirawo kugadzirirwa nekushandisa mumiririri wekusunungura kudzivirira kuti rabha yakarapirwa isanamatira pamusoro.
Kana yangodururwa muforoma, musanganiswa unotanga kuwedzera zvishoma sezvo uchirapa. Mushure memaawa akati wandei kana mazuva zvichienderana nezvinodiwa zvechigadzirwa, rabha yakakandwa inogona kubviswa kubva mukuumbwa uye kupedzwa nematanho ekuwedzera akadai sekucheka zvinhu zvakawandisa kana kuwedzera magadzirirwo. Pakazere, kukanda polyurethane rabha kunopa vagadziri nzira inoshanda yekugadzira zvigadzirwa zvemhando yepamusoro zvine mazinga akasiyana ekuomarara uye kuchinjika kweakasiyana maindasitiri anosanganisira zvikamu zvemotokari, zvinhu zvevatengi, uye michina yekurapa.
Kana iwe uri kuwana iyo kukanda polyurethane sevhisi kambani, ndapota taura nesu sununguka.
Zvishandiso uye Zvekushandisa
Kana zvasvika pakukanda rabha yepolyurethane, zvinhu uye zvekushandisa zvaunoshandisa zvakakosha kuti uwane mhedzisiro inobudirira. Chokutanga uye chakakosha, iwe uchada mold yakagadzirwa nesilicone kana zvimwe zvinhu zvakakodzera kubata iyo polyurethane yemvura. Pamusoro pezvo, iwe unozoda maajenti ekuburitsa akadai se petroleum jelly kana spray-pamhinduro inodzivirira rabha rakarapirwa kunamatira kuforoma.
Iyo inotevera yakakosha yekupihwa ndeye polyurethane pachayo, iyo inowanzouya muzvikamu zviviri: resin uye yakaoma. Zvakakosha kuyera zvikamu izvi nenzira kwayo kuitira nguva yakakwana yekurapa uye kusimba kwechigadzirwa chekupedzisira. Zvichienderana nekuoma kwaunoda kana kuchinjika nhanho, unogona kusarudza kubva kumhando dzakasiyana dze polyurethane ine mareshiyo akasiyana eresin-kune-hardener.
Zvimwe zvakakosha zvinosanganisira makapu ekusanganisa, tsvimbo, magirovhosi, uye magirazi ekuchengetedza sezvo kubata mvura polyurethane kunoda kutarisisa kudzivirira kushatirwa kweganda kana kukuvara kweziso. Kana zvese izvi zviwanikwa zvave kuwanikwa uye kumisikidzwa nemazvo zvinoenderana nemirairo yemugadziri, inguva yekutanga kukanda!
Kugadzirira Mould
Usati wakanda rabha re polyurethane, kugadzirira mold inhanho yakakosha isingasvikike. Kutanga, mold inofanira kuva yakachena uye isina chero tsvina kana tsvina. Izvi zvinogona kuwanikwa nekukwesha pamusoro pe mold nebrashi rakapfava-bristled kubvisa chero zvidimbu zvakasununguka.
Zvadaro, zvakakosha kuisa mumiririri wekusunungura kune mold surface. Iyo yekuburitsa inodzivirira iyo polyurethane rabha kubva kunamira kune mold uye ive nechokwadi kuburitswa kwakatsetseka kana kwapora. Kune marudzi akasiyana-siyana ekuburitsa maajenti anowanikwa pamusika, senge maspray kana zvinwiwa, uye kusarudza imwe kunoenderana nezvinhu zvakasiyana senge resin rudzi uye nguva yekurapa.
Chekupedzisira, zvinokurudzirwa kuwedzera nzira dzekupinda munzvimbo dzinogona kuumbwa homwe dzemhepo panguva yekurapa. Aya machani anobvumira mweya wakavharirwa kutiza panguva yekukanda uye kudzivirira kukanganisa muchigadzirwa chekupedzisira. Nzira dzekupinza mhepo dzinogona kugadzirwa nekuboora maburi madiki munzvimbo dzinogona kubatwa nemhepo, senge makona kana nzvimbo dzakasimba.
Pakazere, kunyatsogadzirira mold yako usati wakanda polyurethane rabha kwakakosha kuti uwane mhedzisiro yemhando yepamusoro uye nekuona kuti molds dzako dzinogara kwenguva refu pasina kukuvara.
Kusanganisa Rubber Compound
Kukandira polyurethane rubber, munhu anoda kusanganisa maviri-chikamu liquid compound. Chikamu chekutanga i polyol kana resin, iyo inopa musana wepolymer. Chikamu chechipiri ndeye isocyanate kana hardener inopindirana ne polyol kuita polima yakasimba. Kusanganisa zvikamu zviviri izvi pamwechete kunotanga kemikari inoshandura musanganiswa wemvura kuita elastic uye yakasimba.
Iyo yekusanganisa nzira inofanirwa kuve yakanyatsojeka sezvo inosarudza zvimiro zvechigadzirwa chekupedzisira. Kusakwana kusanganisa kunogona kusiya homwe dzisina kusanganiswa mukukanda kwako kwekupedzisira, zvichikonzera kusawirirana mukuoma, ruvara, uye magadzirirwo. Izvo zvinogona zvakare kukonzera kupera nguva isati yakwana uye kubvaruka pamidziyo nekuda kwekusaenzana kugovera kwekushushikana mukati mekukanda kwako.
Kuti uwane mibairo yakakwana panguva yekusanganisa, zvakakosha kuti ushandise zviyero zvakaringana zvezvikamu zviviri zvekomboni yako, tevera mirairo yemugadziri zvakanyanya uye shandisa zvakaringana zvekuchengetedza zvakaita semagirovhosi, magirovhosi uye zvinofema kana uchibata makemikari aya. Kana uchinge wanyatso sanganisa makomisheni ako, aidururire muforoma yaakasarudza nekukasira asati atanga kurapa kana kuomesa - izvi zvinoita kuti pave nekufanana kwese kukanda kwako.
Kudira & Kurapa
Kudira uye kurapa matanho akakosha mukukandira polyurethane rabha. Usati watanga nzira, zvakakosha kugadzirira mold nekuchenesa uye kushandisa mumiririri wekusunungura. Kana mold yagadzirira, inguva yekusanganisa rabha yepolyurethane maererano nemirairo yemugadziri. Huyero hwezvikamu A uye B hunofanirwa kuve hwakajeka kuti uve nechokwadi chekurapa kwakakodzera.
Zvadaro, zvishoma nezvishoma dururira musanganiswa wepolyurethane rubber muforoma. Zvakakosha kudzivisa kuunza mabhubhu emhepo panguva iyi nekudurura zvishoma nezvishoma uye kushandisa rwizi rwakatetepa rwemusanganiswa. Mushure mekudira, bata zvinyoro nyoro kana kuzunguza mold kubatsira chero mabhuru emhepo asara kusimuka kumusoro.
Maitiro ekurapa anogona kutora chero kubva maawa akati wandei kusvika kumazuva mashoma zvichienderana nezvinhu zvakaita setembiricha, humidity, uye ukobvu hwekukandwa. Zvakakosha kuti usakanganise kana kubvisa kukanda kusvika kwanyatsopora sezvo kubviswa nguva isati yakwana kunogona kukonzera deformation kana kubvaruka kwechinhu. Kana wanyatsopora, nyatsobvisa chinhu chako chitsva chepolyurethane rubber kubva muforoma kuti uwedzere kushandiswa kana kupedza kubata.
Kupedza Touches
Mushure mekudururira musanganiswa wepolyurethane muforoma, inguva yekuisa pfungwa pane zvekupedzisa zvinozoita kuti chigadzirwa chako chekupedzisira chipenye. Imwe yematanho akanyanya kukosha ndeyekunyatsobvisa chero mabhuru emhepo angave akaumbwa panguva yekukanda. Izvi zvinogona kuitwa nekudzvanya zvinyoro nyoro kana kuzunguza mold kukurudzira chero mabhuru emhepo akabatwa kuti akwire kumusoro uye pop.
Kana uchinge waona kuti mabhuru ese emhepo abviswa, inguva yekurega yako polyurethane rubber kurapwa. Kurapa kunowanzotora maawa akati wandei uye hakufanirwe kumhanyiswa. Zvakakosha kuti iwe usiye cast yako igare isina kukanganiswa kusvika yanyatsopora usati waedza kuibvisa kubva muforoma.
Pakupedzisira, kana kuumbwa kwako kwanyatsopora, unogona kutanga kuibvisa kubva mukuumbwa. Izvi zvinofanirwa kuitwa nekuchenjerera kuti zvisakuvadza kana kukanganisa chigadzirwa chako chekupedzisira munzira ipi neipi. Nekushivirira uye kutarisisa kune zvakadzama panguva ino yekupedzisa, iwe unozopedzisira uine chidimbu chakagadzirwa zvakanaka kubva kupolyurethane rabha!
mhedziso
Mukupedzisa, kukanda polyurethane rabha kunoda kunyatsogadzirira uye kutarisisa kune zvakadzama. Usati watanga nzira yekukanda, zvakakosha kuyera zvakakodzera uye kusanganisa zvikamu zve polyurethane resin maererano nemirairo yemugadziri. Izvi zvinozoita kuti chigadzirwa chekupedzisira chine zvimiro uye maitiro anodiwa.
Kamwe resin yakavhenganiswa, inofanira kudururwa muhutu hwakagadzirirwa zvakanaka nemumiririri wekusunungura. Iyo mold inofanira kubva yasiiwa isina kukanganiswa kwemaawa akati wandei kubvumira resin kupora zvachose. Mushure mekurapa, chero chinhu chakawandisa chinogona kuderedzwa uye chigadzirwa chakapedzwa chinogona kubviswa kubva mukuumbwa.
Pakazere, kukanda polyurethane rubha kunogona kuve kwakaoma asi kunopa mubayiro maitiro kune avo vanoda kuisa munguva uye kushanda nesimba kunodiwa. Nehunyanzvi hwakakodzera uye kutarisisa kune zvakadzama, zvinokwanisika kugadzira emhando yepamusoro castings inosangana nezvido zvako uye zvaunoda.
