Kugadzirwa kwenickel-chromium-chromium-carbide coatings ne supersonic spraying

Kupfapfaidza kweSupersonic tekinoroji yepamusoro-soro inoshandisa majeti anodziya zvakanyanya, anomhanya zvakanyanya kunyungudutsa kana kunyungudutsa zvishoma zvinhu zvekufukidza uye wozozviisa pamusoro pe substrate nekumhanya kukuru kuti zvigadzire kupfapfaidza kwepamusoro-soro. Pakati peizvi, kupfapfaidza kwenickel-chromium/chromium carbide kwakagadzirwa nekupfapfaidza kwesupersonic flame kunonyanya kushandiswa mumaindasitiri.

I. Nheyo dzeUnyanzvi Tekinoroji yekupfapfaidza moto weSupersonic inoshandisa kupisa kwakanyanya kwemafuta (senge parafini, propane, kana hydrogen) neokisijeni ine simba guru mukamuri yekupfuta kuti igadzire rwizi rwegesi rine simba guru uye rinopisa. Rukova urwu rwegesi runokurumidziswa kusvika pakumhanya kwesupersonic sezvo ruchipfuura nemumuromo weLaval wakagadzirwa zvakanaka, ruchigadzira jeti rinomhanya zvakanyanya. Hupfu hwakabatanidzwa hwe nickel-chromium alloy ne chromium carbide hunoshandiswa mukupfapfaidza hunoiswa mujeti iyi, huchikurumidza kupisa kusvika pakunyungudutswa kana kuti hwakanyungudutswa zvishoma nezvishoma, uye hunokanganisa pamusoro pe substrate yakagadziriswa (semuenzaniso, sandblasted) nekumhanya kwakanyanya (kazhinji kunodarika 600 m/s). Zvidimbu zvakanyungudutswa zvinotsvedza pa substrate, zvinotonhorera nekukurumidza, uye zvinoungana uye zvinosimba, zvichizopedzisira zvaita cermet coating yakakora, yakabatana zvakasimba.

II. Hunhu hweCore Coating Coating yakagadzirwa ne nickel-chromium/chromium carbide ine hunhu hunotevera:

Hunhu Hwakanaka hweMichina: Kuputira uku kunobatanidza kuomarara kwakanyanya nekusimba kwakanaka. Kusimbaradza kwayo kunowanzo bva pa760 HV kusvika 995 HV. Nickel-chromium alloy, inoshanda sechikamu chekubatanidza, inopa kusimbaradza kwakanaka uye simba rekubatanidza, nepo chikamu chakaoma chechromium carbide chakapararira chinopa rutsigiro rukuru runodzivirira kupera. Simba rekubatanidza pakati pechiputiro nechikamu chepasi rinodarika 60 MPa.

Magadzirirwo emukati mepurasitiki: Nekuda kwekumhanya kwakanyanya kwezvikamu zvakapfapfaidzwa, zvinoshanduka zvachose kana zvarova, zvichikonzera kuti porosity yepurasitiki idzorerwe padanho rakaderera re1-2%. Porosity yakaderera ndiyo kiyi yepombi iyi inodzivirira ngura zvakanyanya uye inodzivirira oxidation.

Kushanda zvakanaka pakupisa kwepamusoro: Kupfeka uku kunochengetedza kushanda kwakasimba kwenguva yakareba mukati mekupisa kwe538℃ kusvika 900℃. Kunoratidza kuramba kwakasimba pakupisa kwakanyanya uye kuramba kwakasimba pakuoxidation uye kukanganiswa kwegasi. Zvidzidzo zvinoratidza kuti pakupisa kwakanyanya kwe620℃, kuramba kwayo kukanganiswa nekupisa kwezvikamu zvakasimba kwakapetwa kanoverengeka kusvika kagumi kupfuura kwesimbi yakajairika inodzivirira kupisa.

Kudzivirira kwakanaka kwezvakatipoteredza: Chikamu chenickel-chromium alloy binder pachacho chine kudzivirirwa kwakanaka kwe oxidation uye ngura. Kana chikabatanidzwa ne chromium carbide, chifukidziro ichi chinodzivirira kusvibiswa kwakanyanya, ngura ye sulfur, uye kukurwa kwevhu kubva mumafuta akasiyana-siyana emunyu uye makemikari.

III. Nzvimbo Huru dzeKushandiswa

Mudenga: Inoshandiswa pakuisa zvisimbiso zvisingatsvedzeri kana kukwenya zvinhu zvinopisa zvakaita sema compressor blades einjini nema turbine casings.

Simba & Simba: Inoshandiswa zvakanyanya kudzivirira kupisa kwakanyanya uye kuwedzera hupenyu hwemapombi eboiler muzviteshi zvemagetsi zvinoshandisa marasha uye zvinoshandisa gasi, mashizha eturbine yemhepo, uye zvikamu zvekuchinja kweturbine yegesi.

Kugadzira Maindasitiri: Kunoshandiswa pazvinhu zvakakosha zvakaita semaroro esimbi, mavharuvhu anodziya zvakanyanya, maguidhi ekupisa furnace, mashaft epombi yepetrochemical, uye masimbi ekusimbisa.

IV. Zvinhu zveNickel-Chromium-Chromium Carbide Zvakakodzera Kupfapfaidza Supersonic.