1. Basa, kuumbwa kwekutanga uye kushanda kweiyo yakarasika foam coating

(1) Basa guru repende

• 1. Iyo yekuputira layer inogona kuvandudza kusimba uye kusimba kwefoam pateni, uye kudzivirira iyo pateni kubva pakukuvadzwa kana kuremara panguva yekubata, kupfeka, jecha kuzadza, uye vibration.
• 2. Paunenge uchidira, iyo yekuputira layer ndiyo yekuzviparadzanisa pakati pemvura yesimbi nejecha rakaoma. Iyo yekunamira inopatsanura simbi yakanyungudutswa kubva pajecha rakazara kudzivirira simbi yakanyunguduka kuti isapinda mujecha, zvichiva nechokwadi chekukandwa kwepasi kwakatsetseka uye kwakachena pasina kunamira jecha. Panguva imwecheteyo, inodzivirira jecha rakaoma kuti rirege kuyerera mumukana uri pakati pesimbi yakanyungudutswa nefuro, zvichiita kuti mold iwire pasi.
• 3. Iyo yekuputira layer inobvumira foam-type pyrolysis zvigadzirwa (yakawanda gasi kana mvura, nezvimwewo) kuti zvipukunyuke mujecha rakazara uye kusvetwa kunze pakarepo, kudzivirira castings kubva kuburitsa hurema hwakadai semapores, wrinkles, kabhoni kuwedzera, uye zvakasara. (Nekuti tembiricha yekudurura yakasiyana kana uchidira maaloyi akasiyana, zvigadzirwa zvekuora zvemhando yefuro zvakasiyana kwazvo. Kana uchidira simbi yakakandwa, simbi yakakandwa uye mamwe masimbi ane ferrous, nekuti tembiricha yakakwira kupfuura 1350-1600 ℃, zvigadzirwa zve pyrolysis. Kunyanya kuine gasi.Kupfeka kunodiwa kuti mhepo ipinde zvakanaka.Kana aruminiyamu alloy ikandwa, zvigadzirwa zve pyrolysis zvinonyanya kuita mvura nekuda kwekudzikira kwekushisa kunosvika 760-780°C. kukoira uye kupinda mucoating zvakanaka. Iyo layer inotorwa necoating yobuda mugomba.)
• 4. Iyo yekuputira ine thermal insulation properties, iyo inogona kudzivisa uye kuderedza kupisa kwekupisa kwesimbi yakanyungudutswa panguva yekuzadza, uye kunatsiridza kuzadza kutendeseka kwezvikamu zvitete-masvingo.

(2) Basic kuumbwa kwepende

Yakarasika furo machira anowanzo kuumbwa nezvinhu zvinoramba, zvinosunga, zvinotakura (mvura, ethanol), ma surfactants, ekumisa maajenti, thixotropic agents uye zvimwe zvinowedzera. Izvo zvakasiyana-siyana zvinosanganiswa zvakasanganiswa pamwe chete uye zvinotamba basa rakazara mukuputira nekudurura maitiro.

• 1. Refractory zvinhu (aggregate). Sezvinoratidzwa nezita racho, iyo yemusana zvinhu mumucheka, iyo inosarudza refractoriness, kugadzikana kwemakemikari, adsorption uye thermal insulation properties yejasi. Iyo yakakora uye yakanaka particle size yekumisikidza uye chimiro chechidimbu chine simba rakakura pamhepo permeability yejasi. Iyo particle size haifanire kunge yakanyanya kunyanyisa, uye chimiro chinonyatso kutenderera uye kutenderera, kuchiteverwa nemaflakes.
• 2. Binder. Icho chinhu chakakosha chekuwedzera kuve nechokwadi chekuti yakarasika foam coating ine ese epamusoro simba uye yepamusoro pemhepo permeability. Kune kunyanya maviri marudzi e organic uye inorganic. Pakati pavo, organic binders (syrup, starch, dextrin, carboxymethyl cellulose CMC) inogona kuwedzera simba rekuputira pakupisa kwekamuri, uye icharasika panguva yekukanda, inobudirira kuvandudza mhepo yemhepo yekuvhara. Inorganic binders (nanobentonite, girazi remvura, silica sol) inogona kuve nechokwadi chekusimba kwekuputira pakupisa kwekamuri uye kupisa kwakanyanya. Zvinowanzodikanwa kushandisa zvakasiyana-siyana zvekusungirirana nenzira kwayo kuti uone uye uvandudze kushanda kwekuputira.
• 3. Mutakuri. Mvura-based uye doro-based (doro).
• 4. Surfactant (wetting agent). Inonyanya kushandiswa kuvandudza coatability yemvura-yakarasika furo coatings. Mamorekuru ndiwo amphiphilic mamorekuru anogona kuve ese ari hydrophilic uye lipophilic. Kana yawedzerwa kune pendi, iyo hydrophilic yekupedzisira inosanganiswa nemvura mupendi-yakavakirwa pamvura, uye iyo lipophilic kuguma inokwezvwa nefoam mold, ichiita kuti itarise uye yakarongedzwa pamusoro pefoam mold, sebhiriji rinobatanidza plastiki mold uye pendi.
• 5. Kumisa mumiririri. Chinhu chinowedzerwa kudzivirira kunaya kwezvinhu zvakasimba zvinoramba zviri mujira. Panguva imwecheteyo, inobata basa rinokosha pakugadzirisa rheology yekuputira uye kuvandudza kushanda kwemaitiro ekuputira. Sarudzo inowirirana inonyanya kuenderana nerudzi rwezvinhu zvinoramba uye rudzi rwemutakuri. (Iyo inowanzoshandiswa suspending agents for water-based coatings ndeiyi: bentonite, attapulgite, sodium carboxymethyl cellulose, etc .. Inowanzoshandiswa suspending agents for organic solvent coatings ndeiyi: organic bentonite, lithium bentonite, attapulgite, polyvinyl butyral PVB, nezvimwewo). .
• 6. Thixotropic agent. Attapulgite ivhu. Thixotropy, pasi pechiito cheshear yakagadziriswa, viscosity yekuputira inoderera zvishoma nezvishoma nekuwedzera kwekuveura nguva (kuonda), uye viscosity inodzoka zvishoma nezvishoma (thickening) pamwe nekuwedzera kwenguva mushure mokunge kuveura kwamira.
• 7. Zvimwe zvinhu. Defoamer, chinowedzera chinogona kubvisa mabhubhu mumucheka (inowanzo shandiswa defoamers ndeiyi: n-butanol, n-pentanol, n-octanol), mari yekuwedzera ndeye 0.02%. Preservative is a additive kudzivirira kuvirisa, huori uye kuparara kwemvura-based coatings (sodium benzoate inochengetedza inoshandiswa muindasitiri yezvekudya uye ine kuchengetedzwa kwakanaka). Mari yekuwedzera ndeye 0.02% -0.04%.

Masurfactants, defoamers, uye mapreservatives anofanirwa kuwedzerwa panguva imwe chete maererano nemaitiro ekugadzirira kwekuputira.

(3) Kuita kwekuputira

Yakarasika foam coatings inofanira kuva nezvinhu zvinotevera: simba, mhepo permeability, refractoriness, thermal insulation, kukurumidza kutonhora uye kupisa kupisa, kunwa kwehunyoro, adsorption, nyore kuchenesa, kupfekedza, kudonha (leveling), kumiswa Mirira. Inogona kukamurwa zvakafara kuita mapoka maviri: kuita basa uye maitiro ekuita.

• 1. Kuita basa. Kusanganisira: simba, kupenya kwemhepo, refractoriness, kupisa kwekushisa, kukurumidza kutonhora uye kupisa kudzivirira, kunyura kwehunyoro, adsorption, uye nyore kuchenesa. Pakati pavo, iyo inonyanya kukosha midziyo isimba, mhepo inopenya, uye refractoriness.
• 2. Maitiro ekuita. Kusanganisira: kupfeka, kudonhedza (leveling), kuturika. Pakati pavo, iyo inonyanya kukosha kuita ndeyekupfeka uye kudonha (leveling). Nekuti foam modhi pachayo ine isina-wetting zvimiro, machira anodiwa kuti ave neakanaka ekuputira zvinhu. Kudonhedza kwakadzika (leveling) ndiyo nzira huru yekuona yunifomu ukobvu hwekuputira uye kuderedza marara uye kusvibiswa kwezvakatipoteredza.Kupfeka kunofanirwa kuve nekuita kwe "yakakora asi isinganamate" uye "inotsvedza asi isingadonhe".
• 3. Nzira dzekuvandudza kubata kwekuita.

2.Sarudzo yekurasika foam coatings

(1) Chemical zvinhu (pH)

• 1. Acidic cast iron uye cast steel (carbon steel, low-alloy steel) inofanira kusarudzwa inoenderana neacidic uye neutral refractory zvinhu zvakadai sekyanite, flake graphite, silica sand, nezvimwewo.
• 2. Neutral High-alloy simbi inofanirwa kuenderana neasina simba acidic uye neutral refractory zvinhu zvakadai se zirconium kyanite, corundum, zircon sand, uye flake graphite.
• 3. Alkaline yakakwirira manganese simbi inofanira kusarudzwa inowirirana nealkaline refractory zvinhu zvakadai se magnesia uye forsterite.
• 4. Aluminium alloy inofanira kusarudzwa zvinoenderana uye zvimwe zvinhu zvinoramba

(2) Physical properties (kudurura tembiricha)

Zvinodiwa zvakasiyana zvinoiswa kumberi zvakanyanya zvinoenderana nezvinhu zvakaita segating system kuseta, process parameter kumisikidza, yakavigwa bhokisi boka remhando, maitiro ekushanda uye hunyanzvi, uye pa-saiti nharaunda.

3. Kugadzirira uye kuchengetedza pendi

Midziyo yekugadzirira kupfekedza inonyanya zvinosanganisira rubber chigayo, bhora chigayo, low-speed mixer, high-speed mixer, etc. Pakati pavo, mukana werubha chigayo uye bhora chigayo ndechokuti zvikamu zvakadai seaggregate uye binder zvinogona kunyorova zvakakwana. , uye kune mabubble mashoma anobatanidzwa. Izvo zvisingabatsiri ndezvisingaiti kushanda, nguva yakareba yekugadzirira yekuputira uye ruzha rukuru. High-speed mixers zvishoma nezvishoma yave iyo huru yemidziyo yekugadzira pendi. Kana iwe usina high-speed mixer, unogona kushandisa yakaderera-kumhanya musanganisi kuti uwedzere nguva yekusanganisa kuti uwane yakanakira kusanganisa maitiro.

(1) Coating kugadzirira nzira

• 1. Chinangwa uye basa rekusanganiswa kwepamusoro-soro. Sakanidza hupfu nemvura zvakakwana kuti uite yunifomu slurry. Kuburikidza nekukurumidzira kukuru, mafiibhi uye zvinhu zvehupfu zviri mubhainda zvinoiswa pasi pekugera uye kugadziridzwa kwakasarudzika, izvo zviri nyore kusanganisa zvizere. High speed kusanganisa nguva haisi pasi pe2 maawa
• 2. Chinangwa uye basa rekusanganiswa kwepasi-speed. Bvisa gasi rakadhonzwa mupende nekuda kwekumhanya-mhanya. Kuve nechokwadi chekusimba kwekuputira kunobatsira kuvandudza pamusoro pemhando yekukanda. Kurudzira nekumhanya kwakaderera kwemaawa maviri kana kuenderera.

(2) Kudzora kwehutano hwepende

• 1. Density. Inotaridza hutete hwekupfeka, uye zvakare inoratidza ukobvu hwekuputira panguva yekupfeka. Iyo yakakosha yemhando indekisi yejasi, uye density inowanzo shandiswa kudzora nzvimbo yekugadzira. Chiyero chekushandisa: hydrometer (Pomemeter)
• 2. PH kukosha (acidity, alkalinity) yekuputira. Izvo zvinodiwa kuti uwedzere zvakasiyana-siyana zvehupenyu zvisungo uye mvura kumucheka. Kuti uve nechokwadi chekugadzikana kwezvinhu izvi zvehupenyu nemvura, pamwe nekugadziriswa kwemakemikari ehuputi kune simbi yakanyungudutswa, inofanira kudzorwa. Inogona kuyerwa nePH bvunzo bepa uye PH mita.
• 3. Kuvhara uremu. Ukobvu hwekuputira hunogona kuenzaniswa nekuyera huremu hwemuenzaniso mushure mekuputira maviri uye kuyera huremu hwekuputira.

(3) Kuchengetwa kwepende

Iyo pende inonyanya kugadzirirwa chero nguva uye inoshandiswa munguva. Pendi yakasara iri nyore kuchengeta munzvimbo inotonhorera uye haifaniri kuchengetwa kwenguva yakareba. Zvichienderana nemamiriro ekunze uye mamiriro enzvimbo yekuchengetedza, nguva yakawanda yekuchengetedza muzhizha mazuva 2-5, uye nguva yekuchengetedza munguva yechando: mazuva 5-10. Panguva imwecheteyo, kuvirisa kana kutonhora kunofanira kudziviswa.

4. Kuvhara uye kudzivirira

(1) Coating nzira (kukwesha, kunyudza, kugezesa, kupfapfaidza) uye chiyero chekushandisa

Brush: yakakodzera kune imwechete-chidimbu diki batch kugadzirwa kwepakati uye makuru maumbirwo. Kunyura uye kunyura: inokodzera zvimiro zviduku zvine mabheti makuru uye maumbirwo akaoma. Kupfapfaidza: Kazhinji yakakodzera kune yakatetepa-madziro kana kuremara nyore uye nyore kukuvadzwa zvimiro.

(2) Sarudzo inonzwisisika yekupfeka ukobvu

Ukobvu hwekufukidzira hunofanirwa kuiswa zvakazara zvichienderana nezvinodiwa zvezvinhu zvakaita semhando yesimbi yakanyungudutswa, chimiro chekukanda, kuoma kwechimiro, huremu, ukobvu hwemadziro, uye kuseta uye kusarudzwa kwegeti system. Kune iyo mold sampuli, ukobvu hwejasi hunofanira kuderedzwa zvakanyanya sezvinobvira pane iyo nhanho yekusimbisa kusimba uye kunyura kwekudzivirira kweiyo coating kuti ibatsire kuvandudza mhepo kupera. Inogona kusarudza pakati pe 0.3-3.5mm. Kune gating system, simba rekuvhara rinofanira kuwedzerwa zvakanyanya sezvinobvira, uye hupamhi hwehuputi hunofanira kuwedzerwa zvakakodzera, iyo inogona kusarudzwa pakati pe3.5-6mm.

(3) Nyaya dzinoda kutariswa

• 1. Shandisa zvizere thixotropy yemvura-based coatings (iyo viscosity yekuputira inoderera panguva yekukurudzira, uye viscosity inokwira mushure mekusimudzira kumira). Pasi pemamiriro ekuenderera mberi kwekukurudzira uye kutonga kwekushisa, kuvhara kunoitwa kuitira kuti uwane yunifomu yekuputira uye kuderedza deformation yemuenzaniso.
• 2. Sarudza kumhanya kwakakodzera. Inogona kudzorwa pa10-20 revolutions / min. Kana kukurumidza kutenderera kwakanyanyisa, pendi inogona kuwedzera; kana kukurumidza kutenderera kwakanyanyisa, pendi ichaputirwa mugasi uye inobudisa mabhubhu.
• 3. Kuchenjerera kunofanira kubhadharwa kudzora zvinonzwisisika nzvimbo, kona, kutungamira, kukurumidza, simba, nezvimwewo zvepateni yakanyudzwa mupende kudzivirira kukanganisa uye matambudziko akadai sedeformation, kukanganisa, uye mabhubhu.
• 4. Pakuputira, iva nechokwadi chokuti jira rakafanana uye rinovhara zvachose zvikamu zvose zvemuenzaniso.
• 5. Anti-deformation uye anti-breakage inofanira kumhanya nenzira yose yekuputira nekurembera. Paunenge uchiisa iyo yakavharwa modhi, mhedzisiro yekuomeswa uye kudzivirira kwe deformation uye kukanganisa kunofanirwa kutariswa zvizere.

(4) Tsika dzakaipa pakuita mabasa ekupenda

• 1. Kuzunungusa. Iyo yakavharwa modhi inofanirwa kuiswa pasherufu yakamira, uye pende inodonha yega kuti iwane yunifomu uye yakatsetseka coating. Kunyangwe kuzununguka kwechigadzirwa kunogona kuwedzera kumhanya kwekuvhara, panguva imwe chete, kuchaparadzawo kufanana uye kuenzana kwejasi, zvichiita kuti jira rive rakatetepa kana kuunganidza munharaunda. (Isa vhidhiyo)
• 2. Dova. Inonzi zvakare "Lu Bai" sekureva kunoita chirevo. Chikamu chekuputira kana nzvimbo yakakura haina kuvharwa nepende, uye hapana matanho anotorwa kuti agadzirise, uye inobvumirwa kuendeswa kune imwe nzira. Izvi zvichaita kuti kupfekedzwa kuve kutete uye kuderedza simba uye zvimwe zvivakwa, izvo zvinokanganisa kunaka kwekukanda. (Isa mufananidzo)

5. Kuomesa pendi

(1) Kuomesa nzira uye midziyo

Yakasikwa nzira yekudzivirira kwezvakatipoteredza: Shandisa yakavhurika kuomesa mhepo kana kamuri yezuva, kupisa kwegreenhouse uye kuomesa kuti uwane mhedzisiro yekubvisa mvura, dehumidification uye kuomesa. Kupisa uye dehumidification nzira: Imba yekuomesa yakasarudzika inoshandiswa kuwedzera uye kuchengetedza tembiricha yekamuri yekuomesa nekupisa marasha, gasi, simba remagetsi, geothermal, steam, nezvimwewo, uye yakakosha midziyo inoshandiswa kuburitsa hunyoro kuti uwane mhedzisiro kupera mvura mumuviri, dehumidification uye kuomesa.

(2) Kudzora kwehutano hwekuoma

• 1. Kuomesa tembiricha. 35-50 ℃. Kuomesa kwakadzika-tembiricha kunogona kushandiswa pafungidziro yekuti dehumidification mhedzisiro uye kugona kunovimbiswa. Panguva imwecheteyo, kupisa kwekuoma hakufaniri kuiswa zvakanyanya. Kana tembiricha inopfuura 50 ° C, modhi yacho inotarisana nezvinetso sekupfava uye kudonha kubva kune colloid.
• 2. Kupisa kwehuwandu. Iyo yekupisa yekumhanyisa haifanirwe kunge ichimhanya zvakanyanya, uye inofanirwa kudzorwa pa5-10 ℃/awa. Kana iyo yekudziya yekumhanyisa ichimhanya zvakanyanya, iko kupfekedza kunowanzo kutsemuka, delamination kana kupenengura.
• 3. Kuomesa nguva. Zvichienderana nekuoma uye ukuru hweiyo chaiyo yekuomesera midziyo, nharaunda uye modhi, kazhinji, nguva yekuomeswa yekuputira yekutanga inofanira kudzorwa kwemaawa 8-12 kana kupfuura. Nguva yekuomeswa kwechifukidzo chechipiri inofanira kudzorwa mukati meawa 16-24 kana kupfuura, uye nguva yekuomeswa yemucheka wechitatu inofanira kudzorwa mukati meawa 20-24 kana kupfuura. Muchidimbu, cheki yekuyera inofanira kuitwa pakati pekupfuura imwe neimwe. Mushure mekusimbisa kuti yakaoma zvachose, pende inofanira kushandiswa kune imwe nguva inotevera.
• 4. Coating kugadzirisa uye kugadzirisa.

Batanidza kuchinyorwa ichi:Basa Rema Coatings Mukurasika Foam Casting Production process 

Dzokorora Chirevo: Kana pasina mirairo yakakosha, zvese zvinyorwa zviri pasaiti ino ndezvepakutanga. Ndokumbira utaridze kwakabva kudhindwazve:www.cncmachiningptj.com

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