Bentonite powder inobatanidza zvinhu zvakawanda, inoita kuti kusimba kwemuumbi kugone kuputsika uye kugadzikana kwekugadzirwa kwayo mu ferrous
Tsananguro pfupi:
Upfu hweBentonite ivhu remusikirwo rinoumbwa kuburikidza nekushanduka kwenguva refu kwenzvimbo yemadota egomo nematombo e silicate, rine chimiro chakasiyana chekristaro chinotsigira mashandiro aro akanaka mumaindasitiri, kunyanya muchikamu chekugadzira matombo. Upfu uhwu hwakanaka, hwakapfava hune hunhu hwahwo hwakadai sekunyudzwa kwemvura kwakasimba, kugona kuzvimba kunoshamisa, kugona kusunga matombo zvakanyanya, kugadzikana kwakanyanya kwekupisa, uye kupararira kwakafanana, zvese izvi zvinoita kuti ive chinhu chisina kutsiviwa mumabasa ekugadzira matombo emazuva ano. Upfu hweBentonite hunoshanda sechinhu chikuru chinosunga matombo mumasystem ekugadzira matombo e foundry, huchishanda semusana unobatanidza zvidimbu zvejecha pamwe chete kuti zvigadzire maforoma akasimba, akarurama pachiyero uye macores ekugadzira simbi. Basa rayo muindasitiri yekugadzira matombo rinopfuura kubatana kuri nyore, richipesvedzera nhanho yega yega yekugadzira matombo, kubva pakusanganisa jecha nekugadzira matombo kusvika pakudurura simbi yakanyungudutswa, kusimba, uye kuzununguka, zvichikanganisa zvakananga mhando yemakasitoma akapedzwa, kushanda zvakanaka kwekugadzira, uye mari yese yekushanda kwemakambani ekugadzira matombo pasi rese.
Muindasitiri yekugadzira zvinhu, bentonite powder inonyanya kushandiswa mukugadzira jecha regirini, nzira inonyanya kushandiswa mukugadzira pasi rose, inoshandiswa kugadzira simbi dzakasiyana-siyana dzinoshandiswa mukugadzira simbi dzine ferrous nedzisina ferrous. Jecha regirini, rinoumbwa nejecha resilica, bentonite powder, mvura, nezvimwe zvinhu zvidiki zvinobatsira, zvinoenderana nebentonite powder kuti pave nekubatana pakati pejecha rega rega. Kana bentonite powder ikasanganiswa nemvura, chimiro chayo chinokura zvakanyanya, zvichiita firimu rakatetepa, rinonamira rinofukidza chidimbu chejecha rega rega uye rinozvibatanidza kuita chinhu chakabatana. Iyi nzira yekubatanidza inochinjika uye inochinjika, ichibvumira musanganiswa wejecha regirini kuumbwa zviri nyore kuita maumbirwo akaomarara, kuomeswa zvakaenzana, uye kuchengetedza chimiro chayo panguva yekubata, kutakurwa, uye chikamu chakakosha chekudurura simbi yakanyungudutswa. Pasina bentonite powder, green jecha molding hazvigoneke, sezvo jecha rakareruka risina hunhu hwakasimba hwekutsungirira kupisa kwakanyanya nekumanikidzwa kwesimbi yakanyungudutswa, zvichikonzera kudonha kwechivhuvhu, kukanganisa kwekukanda, uye kutadza kugadzirwa.
Kubatana kwebentonite powder kunoratidza simba regirini refoundry molds, chinhu chakakosha chinotsanangura kugona kwefound kuchengetedza chimiro chayo uye kuramba kuchinja panguva yekubata nemaoko nemagetsi. Bentonite powder yemhando yepamusoro inoumba chisungo chakasimba asi chinochinjika pakati pezvikamu zvejecha, zvichiita kuti mafounds asatsemuke, asaputsike, kana kurasikirwa nekururama paanenge achitamiswa kubva kunzvimbo dzekuumba kuenda kumitsara yekudira, kana kana akaiswa mukati memaflasks ekukanda. Simba iri regirini rakasimba rinokosha kune mafoundry madiki netambo dzekugadzira dzinogadzirwa nemaoko, uko kusimba kwefound kwakakodzera kwakakosha kuderedza kukanganisa kwekugadzirwa uye mwero wekuramba. Bentonite powder ine hunhu hwakanaka hwekuzvimba uye kusunga inoita kuti kunyange mafound akaomarara ane zvikamu zvitete, maburi akadzika, uye ma contours akapfava agare chimiro chawo zvakakwana, zvichigonesa kugadzirwa kwemafounds akaomarara anoshandiswa muzvikamu zvemotokari, michina, kuvaka, uye michina yeindasitiri.
Kupfuura simba regirini, bentonite powder inobatsira zvikuru musimba rinopisa refoundry molds, hunhu hwakakosha hunobvumira mafounds kuti agone kutsungirira kupisa kunotsva kwesimbi yakanyungudutswa pasina kuputsika kana kushata. Kana simbi yakanyungudutswa, simbi, kana simbi dzisina ferrous dzakadai sealuminium nemhangura zvikadururwa mumafounds, kupisa kwakanyanya kunobvisa hunyoro hwasara mujecha regirini uye kunokonzera shanduko dzekupisa mubentonite powder binder. Bentonite powder yepamusoro inochengetedza kugadzikana kwayo mumamiriro ezvinhu aya ekupisa kwakanyanya, ichidzivirira madziro efound kuti asaputsike, apwanyike, kana kutsemuka sezvo simbi yakanyungudutswa ichizadza gomba refound uye ichioma. Simba iri rinopisa rinoita kuti found irambe iine chimiro chaicho uye saizi yefound, ichibvisa zvikanganiso zvakaita sekupinda kwesimbi, kusanganiswa kwejecha, uye kukanganiswa kwedimensional izvo zvinoita kuti mafounds asashande. Foundries dzinoshandisa bentonite powder kuti dzipe simba rinopisa rinogara richienderana nematanho ese ekufound, zvichiita kuti chidimbu chega chega chisvike padanho rakasimba uye remhando.
Chimwe chinhu chakakosha cheupfu hwebentonite mukushandiswa kwefoundry ndechekuti hunogona kuputsika zvakanaka, izvo zvinoita kuti maitiro ekubvisa simbi mushure mekukanda awedzere uye zvinoderedza kupera kwebasa nemidziyo. Mushure mekunge simbi yakanyungudutswa yaoma uye yatonhorera kusvika pakupisa kunogoneka, furu yejecha yakabatana inofanira kuputswa kuti ibudise furu yakapedzwa, uye jecha rinodzokororwa kushandiswazve. Chimiro chekubatanidza cheBentonite powder chinopera simba sezvinotarisirwa sezvo furu ichitonhorera, zvichiita kuti jecha riputsike zviri nyore kana paine kuzununguka kwemuchina kana kukanganiswa panguva yekudzudzurwa, pasina kusiya zvasara zvejecha zvakaoma, zvakaomeswa zvakanamatira pamusoro pekuumbwa. Kuputsika uku kwakanyanya hakungokurumidzi chete kuyerera kwekugadzirwa nekuderedza nguva inoshandiswa pakuburitsa furu asi kunoderedzawo kukuvara kwefuru panguva yekubviswa, senge kukwenya, maburi, kana mipendero yakapwanyika. Pamusoro pezvo, furu yebentonite inobatsira kugadzirisa jecha zvakanaka, sezvo jecha rakaputsika rinogona kucheneswa, kucheneswa, uye kusanganiswazve nefuru yebentonite itsva nemvura, zvichideredza marara ezvinhu zvisina kugadzirwa uye kudzikisa mitengo yekugadzira inoenderera mberi yefendesheni dzehukuru hwese.
Upfu hweBentonite hunoitawo basa guru mukuvandudza kupedzwa kwezvikamu zvesimbi zvakaumbwa, chiyero chakakosha chinoratidza kukodzera kwezvishandiso zvekushandisa kwekupedzisira pasina michina yakawanda yekuwedzera. Hukuru hwezvidimbu zvidiki uye kupararira kwakafanana kweupfu hwebentonite kunoita kuti musanganiswa wejecha regirini ugadzire nzvimbo yakatsetseka, yakakora isina maburi akawanda uye isina kurongeka. Kana simbi yakanyungudutswa ikayerera mugomba iri rakatsetseka, inotevedzera magadzirirwo epamusoro pechiumbwa nemazvo, zvichikonzera kupedzwa kwenzvimbo dzakachena, dzakafanana dzisina makomba ejecha, makomba akaomarara, nezvimwe zvikanganiso pamusoro. Kupedzwa uku kwakawedzerwa kunoderedza kudiwa kwemabasa ekugadzira, kukuya, uye kupukuta anodhura uye anotora nguva, zvichiita kuti maitiro ekugadzira ave nyore uye kunatsiridza kugadzirwa kwese. Kune ma castings akanyatsonaka anoshandiswa mumainjini emotokari, masisitimu e hydraulic, uye michina yakanyatsonaka, kupedzwa kwepamusoro kwakatsetseka kunogoneswa neupfu hwebentonite kwakakosha pakuona kukodzera kwakakodzera, kushanda, uye kushanda kwechikamu chekupedzisira.
Mukugadzira macores e foundry, ayo anoshandiswa kugadzira makomba emukati, maburi, uye ma geometries akaomarara emukati mu castings, bentonite powder inoshanda sechinhu chakavimbika chekubatanidza misanganiswa yejecha remukati. Macores anotarisana nemamiriro ezvinhu akaoma kupfuura ekunze, sezvo akakomberedzwa zvizere nesimbi yakanyungudutswa uye achisangana nekupisa kwakanyanya kwenguva refu panguva yekukanda. Bentonite powder inopa simba rinodiwa uye kugadzikana kwekupisa kwemacores, zvichidzivirira kuti asachinjike, aputsike, kana kuparara panguva yekudururwa kwesimbi nekusimba. Izvi zvinoita kuti zvinhu zvemukati zve castings zvigadzirwe nemazvo, zvine saizi dzakafanana uye nzvimbo dzakatsetseka dzemukati. Bentonite powder-based core sand mixes iri nyore kugadzirira, kuumba, uye kubika, ichipa imwe nzira inodhura pane resin-bonded cores kune akawanda mashandisirwo e castings akajairwa, zvichiita kuti ive chinhu chakakosha muma foundries madiki uye ma foundries makuru ekugadzira.
Kugona kuchinjika kwebentonite powder kunoita kuti ive yakakodzera mhando dzese dzekugadzira simbi mukati meindasitiri yekugadzira, ichifukidza simbi dzesimbi dzakadai segrey iron, ductile iron, uye carbon steel, pamwe nesimbi dzisina ferrous dzinosanganisira aluminum alloys, bronze, uye bronze. Rudzi rwesimbi yega yega inoda hunhu hwakasiyana hwemold, uye bentonite powder inogona kugadzirwa kuti isangane nezvinodiwa izvi zvakasiyana nekugadzirisa chiyero chekusanganisa nejecha nemvura, kana nekushandisa magiredhi ebentonite powder akagadziriswa zvakanyanya. Kune iron casting, iyo inosanganisira tembiricha yakanyanya kunyunguduka yesimbi, bentonite powder inopa simba rinopisa uye kugadzikana kwekupisa kudzivirira kutadza kwemold. Kune aluminum nedzimwe non-ferrous metal casting, bentonite powder inopa nzvimbo dzakatsetseka dzemold uye kugona kuputsika kwakanaka, ichivimbisa kuti castings dzemhando yepamusoro, dzisina kuremara dzine ruzivo rwakanaka rwepamusoro. Kuchinja uku kunobvisa kudiwa kwezvishandiso zvakawanda zvekubatanidza, zvichiita kuti foundry ishande zviri nyore uye kuderedza kuoma kwekushanda.
Magiredhi akasiyana eupfu hwebentonite anogadziriswa kuti asvike pazvinodiwa zvakasiyana-siyana zveindasitiri yepasi rose yekugadzira zvinhu, uye giredhi rega rega rakagadzirwa kuti ripe hunhu hwakasiyana hwekushandisa pakukanda zvinhu. Upfu hwesodium bentonite, giredhi rinonyanya kushandiswa mumafoundry, hune kugona kuzvimba kwepamusoro, simba rekusunga, uye kugadzikana kwekupisa, zvichiita kuti ive yakakodzera mashandiro ekukanda simbi yesimbi ine ferrous yakawanda uye inopisa zvakanyanya. Hunhu hwayo hwekunwa mvura nesimba uye hwekusunga hunoita kuti huve nesimba uye kushanda zvakanaka kwemould, kunyangwe mumitsetse mikuru yefoundry. Upfu hwecalcium bentonite, kunyangwe hune kugona kuzvimba kwakaderera zvishoma, hunoita kuti hushande zvakanaka uye hune mari yakawanda, zvichiita kuti hukwanise kushandiswa mumafoundry madiki, kukanda simbi isina ferrous, uye kushandiswa uko kusingadiwi kudzivirira kupisa kwakanyanya. Upfu hwebentonite hwakagadziriswa, hunogadziriswa kuti huwedzere hunhu hwayo hwekusunga uye kuzvimba, hune kugona kwepamusoro kwekukanda nemazvo, kukanda simbi kwakapetwa, uye kugadzirwa kwezvikamu zvakaoma, uko mhando yemould uye kurongeka kwekukanda zvinhu zvinonyanya kukosha.
Kugadziriswa uye kudzora mhando yeupfu hwebentonite pakushandiswa kwefoundry kwakaoma, zvichiita kuti isvike padanho rekushanda rakasimba rinodiwa kuti pave nemhedzisiro yekuumbwa kwakasimba. Ore yebentonite isina kugadzirwa inotorwa kubva muzvicherwa zvakasarudzwa zvakanaka, yobva yapwanywa, yoitwa upfu hwakatsetseka, yocheneswa kubvisa tsvina yakaita sejecha, zvinhu zvakasikwa, nezvimwe zvicherwa zvinogona kukanganisa mashandiro ayo ekubatanidza. Hukuru hweupfu hwebentonite hunodzorwa zvakasimba, sezvo zvidimbu zvakatetepa zvichiita kuti kupararira kuri nani mumisanganiswa yejecha, kufukidza kwakafanana kwejecha, uye simba rakasimba remould. Upfu hwebentonite hwakacheneswa hunozoedzwa kuti huonekwe kuti hune hunhu hwakakosha hunosanganisira kuzvimba, kugona kusunga, hunyoro, uye kugadzikana kwekupisa, nemabheti chete anosangana nezvinodiwa zvemhando yepamusoro zvinotenderwa kushandiswa kwefoundry. Kudzora uku kwakasimba kwemhando kunoita kuti bhenji rega rega reupfu hwebentonite riite mashandiro akafanana, zvichibvumira foundry kuchengetedza maitiro ekugadzira akagadzikana uye kuderedza zvikanganiso zvekugadzira.
Kubata nekuchengetera bentonite powder nemazvo kwakakosha kuchengetedza mashandiro ayo mukushandiswa kwefoundry, sezvo kusvibiswa kwehunyoro uye kuora kwemuviri kunogona kukanganisa kuzvimba kwayo uye kubatana kwayo. Bentonite powder inofanira kuchengetwa munzvimbo dzekuchengetera zvinhu dzakaoma, dzine mhepo inofefetera zvakanaka, yakavharwa mumapakeji asingapindi hunyoro kudzivirira kusvibiswa nehunyoro, mvura, uye kudonha kwemvura. Kunyudzwa kwehunyoro kwakanyanya kunoita kuti bentonite powder iungane, zvichideredza kupararira kwayo mujecha uye simba remafungu risingachashandiswi zvakanaka. Munguva yekufambisa, bentonite powder inofanira kudzivirirwa kubva mukukuvadzwa kwemuviri kuphakeji, ichiva nechokwadi chekuti hupfu hunoramba hwakachena uye huri nyore kusanganisa. Foundries dzinowanzo chengeta bentonite powder mumamiriro ezvinhu akarongwa pedyo nenzvimbo dzekuumba, zvichiita kuti isvike nekukurumidza uye irambe yakanaka kusvika yashandiswa. Kutevedzera nzira dzakakodzera dzekuchengetedza kunoita kuti bentonite powder irambe iine hunhu hwayo hwese, ichipa mashandiro ekubatanidza akavimbika pese painosanganiswa mujecha rekuumba.
Kusanganisa bentonite powder ne silica jecha, mvura, nezvimwe zvinowedzera inhanho yakakosha mukushanda kwe foundry, zvichikanganisa zvakananga kunaka kwe green jecha musanganiswa uye mhedzisiro inotevera yekukanda. Bentonite powder inofanira kutanga yasanganiswa zvakafanana nejecha rakaoma kuti ive nechokwadi chekupararira kwakaenzana, ichiteverwa nekuwedzera mvura zvishoma nezvishoma kuti hupfu huzvimbe uye hunobatanidza hunhu hwahwo. Kusanganisa zvakanyanya kana kusasanganisa zvakakwana kunogona kutungamira kusimba kwemould kusingawirirane, ne bentonite powder isina kusanganiswa zvakanaka ichikundikana kusunga zvidimbu zvejecha zvinobudirira, uye kusanganisa zvakanyanya zvichikonzera kusimba kwakanyanya uye kudzikira kwemould permeability. Ma foundry emazuva ano anoshandisa automated sand mixing systems kuti ave nechokwadi chekuti kudzora nguva yekusanganisa, kumhanya, uye huwandu hwezvinhu zvinoshandiswa, zvichiita kuti bentonite powder ishande zvakanaka uye kugadzira mabheti ejecha regirini anowirirana.
Muchidimbu, bentonite powder inomira sedombo rinokosha muindasitiri yepasi rose yekugadzira zvinhu, ichibatsira kugadzira zvinhu zvinogadzirwa nejecha regirini uye ichigonesa kugadzirwa kwezvinhu zvinogadzirwa nesimbi zvine hungwaru uye zvinobudirira. Musanganiswa wayo wakasiyana wesimba rakasimba rekubatanidza zvinhu, hunhu hwakanaka hwekuzvimba, kugadzikana kwekupisa, kupindira kwakaringana, uye kugona kupetwa zvakanaka kunoita kuti ive yakakodzera kusangana nezvinodiwa zvakanyanya zvesimbi dzinogadzirwa nesimbi dzine ferrous nedzisina ferrous. Kubva kumafekitori madiki kusvika kumafekitori makuru ekugadzira zvinhu otomatiki, bentonite powder inoita basa rakakosha mukugadzira nhanho yega yega yemaitiro ekugadzira zvinhu, ichikanganisa zvakananga kunaka kwekugadzira zvinhu, kushanda zvakanaka kwekugadzira, uye kugara kwenguva refu kwekushanda.
Ivhu rakagadziriswa ivhu rinonyungudutsa rakagadzirwa nevhu (kunyanya bentonite) sezvinhu zvisina kugadzirwa, iro rinogadziriswa ne inorganic acidification, rozosukurudzwa roomeswa nemvura. Rinotaridzika seupfu hwemukaka muchena, harinhuwi, harina kunaka, harina chepfu, rine simba rekunyungudutsa, uye rinogona kunyungudutsa zvinhu zvine mavara uye zve organic. Zviri nyore kunyungudutsa hunyoro mumhepo. Kana rikaiswa kwenguva yakareba, simba raro rekunyungudutsa richadzikira. Zvisinei, kana rapiswa pamusoro pe300 ℃, mvura yekristaro inorasika, izvo zvinochinja chimiro uye zvinokanganisa kupera. Ivhu rinoshanda harinyungudike mumvura, organic solvents uye mafuta akasiyana-siyana, rinonyungudika zvachose mu caustic soda uye hydrochloric acid, rine huwandu hwe2.3-2.5, uye bentonite shoma mumvura nemafuta.
Chinhu chevhu chakagadziriswa
1. Ine zvakanakira zvekunyungudutsa kwakasimba, kucheneswa kwemavara zvakanyanya, kutakurika kwemafuta kwakaderera, kukurumidza kusefa uye kuwedzera kushoma;
2. Inogona kubvisa zvinobudirira huwandu hwese hwe phospholipid, sipo uye ma ioni esimbi uye inogona kushandiswa semushonga wekudzivirira muviri wechisikigo;
3. Inogona kubvisa aflatoxin, zvasara zvezvipembenene nezvimwe zvinhu zvine chepfu uye hwema hunoshamisa mumafuta;
4. Mushure mekusachinja ruvara, acid yemafuta haikwire, haidzokeri kuruvara, yakajeka uye inoonekera, uye ine mhando yakagadzikana uye inogara kwenguva refu.
5. Inonyanya kukodzera kunatswa nekugadzirwa kwemafuta emineral, mafuta emuriwo nemafuta emhuka.
Hunhu hwevhu rakagadziriswa
1. Ivhu rinoita kuti mvura itsvuke rinogadzirwa nevhu remhando yepamusoro risingashandisi simbi, rinobva muzvicherwa zvemhando yepamusoro, richiwedzera kushandiswa kwesainzi uye rakanatswa nehunyanzvi hwekugadzira. Rinoonekwa seupfu hwegrey chena kana yero yakapfava, inova imwe nzira yakanaka yekubvisa kabhoni yakakangwa.
2. Ivhu rinobvisa ruvara rine simba rakasiyana-siyana rekubvisa ruvara, kugona kukuru kubvisa ruvara, kugona kwakasimba kwekunyungudutsa nekuchenesa, uye kugona kwakasimba kwekunyungudutsa ruvara netsvina.
3. Ivhu rinobvisa tsvina rine kugadzikana kwakasimba pakushandiswa, uye zviri nyore kushandisa uye zvakachengeteka, pasina kuchinja maitiro ekutanga ekugadzira.
4. Keke rekusefa rakasefetwa nevhu rinobvisa tsvina rinogona kushandiswazve pasina kusvibiswa kwezvakatipoteredza.
5. Ivhu rinobvisa ruvara rine mwero wepamusoro wekubvisa ruvara, mwero wekutakura mafuta wakaderera, kumhanya kwekusefa nekukurumidza uye mwero weasidhi wakaderera.
Pasuru
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