Thebamka slurrywaa matoorka gudbiya isku-darka adkaha iyo biyaha. Sidaa darteed, dhexdhexaadku wuxuu noqon doonaa mid xoqaya qaybaha qulqulaya ee bamka slurry. Sidaa darteed, qaybaha qulqulaya bamka slurry waxay u baahan yihiin in laga sameeyo walxo u adkaysta xidhashada.
Walxaha biraha ah ee sida caadiga ah loo isticmaalo bambooyin slurry waxay u qaybsamaan birta shubka ah, birta ductile, birta chromium sare ee birta, birta aan la kala saarin, iyo wixii la mid ah. Birta kabka ee chromium-ka sare waa jiilka saddexaad ee walxaha adkaysiga u leh ee la sameeyay kadib birta shubka cad ee caadiga ah iyo birta adag ee nikkel. Sababo la xiriira sifooyinka qaab dhismeedka birta chromium ee sarreeya, waxay leedahay adkeysi aad u sarreeya, xoog heerkul sarreeya, kulaylka iska caabinta, iyo xirashada caabbinta birta caadiga ah ee shubka. Birta kabka ah ee chromium-ka sare ayaa lagu ammaanay inay tahay waxyaalaha ugu fiican ee ka-hortagga abrasive-ka wakhtigan, waxaana si weyn loo isticmaali jiray maalinba maalinta ka dambaysa.
Heerarka qaranka Shiinaha ee birta cad ee u adkaysata xidhashada (GB/T8263) ayaa qeexaysa darajada, halabuurka, adkaanta, habka daawaynta kulaylka, iyo sifooyinka isticmaalka birta kabka cad ee chromium sare.
Heerka fulinta ee birta chromium sare ee Maraykanka waa ASTMA532M, Boqortooyada Ingiriiska BS4844, Germany DIN1695, iyo France NFA32401. Ruushku waxa uu horumariyay 12-15% Cr, 3-5.5% Mn iyo 200mm dhumucdiisuna waxay tahay 200mm dhumucdiisuna waxay tahay xayndaabyada kubbadaha dhumucda derbiga ee Midowgii Soofiyeeti ee hore, oo hadda hirgaliyay heerka OCT7769.
Qalabka ugu muhiimsan ee loo isticmaalo qaybaha qulqulaya ee matoorada slurry ee gudaha iyo dibaddaba waa birta aan fiicnayn, birta chromium sare, iyo birta adag ee nikkel. Birta kabka ee chromium-ka sare waa walax musharax oo ku habboon qaybaha qulqulaya ee matoorada slurry. Iyada oo loo marayo hagaajinta ama xulashada heerarka kaarboonka iyo chromium, saameynta ugu wanaagsan ee isticmaalka qaybaha qulqulaya ee hoos yimaada xaaladaha warshadaha iyo macdanta kala duwan ayaa la heli karaa.
Birta kabka ee chromium sare waa soo gaabinta sare ee birta kabka ee ka hortagga xidhashada cad ee chromium. Waa maaddo ka hortag ah oo leh waxqabad aad u fiican iyo feejignaan gaar ah; waxa ay leedahay iska caabin aad uga sarreeya birta daawaha iyo adkeysi iyo xoog aad uga sarreeya birta guud ee shubka cad. Isla mar ahaantaana, waxay sidoo kale leedahay iska caabin wanaagsan oo heerkulka sare ah iyo daxalka, oo ay weheliso wax soo saar ku habboon iyo kharash dhexdhexaad ah, waxaana loo yaqaanaa mid ka mid ah qalabka ugu fiican ee ka hortagga abrasive ee casriga ah.
Hadda Taxanayaal badan oo chromium kabka birta u adkaysta ayaa badanaa la isticmaalaa:
Bambooyin slurry ah oo ka samaysan walxaha A05 (Cr26) ayaa ah kuwa ugu badan ee loo isticmaalo warshadaha macdanta. Qaab-dhismeedka-yar ee chromium alloy-ga sare ee A05 wuxuu muujinayaa inay ka kooban tahay chromium karbides-ka adag ee eutectic ee matrix-site-ka si buuxda u adag. Codsiyada bamka slurry-ka ah ee ay labada naaxinta iyo daxalka labaduba ay xukumaan, waxqabadka maaddadan ayaa aad uga fiican birta kale ee cad-cad.
Inkasta oo qaybaha qoyan ee ka samaysan A07 (Cr15Mo3) ay leeyihiin caabbinta xirashada sare, adkaanta ka wanaagsan, iyo nolosha adeegga ka dheer A05, kharashkoodu waa laba jibaar ka A05, markaa waxqabadka kharashku wuu hooseeyaa, baaxadda isticmaalkuna waa yar yahay.
A49 (Cr30) asal ahaan waa bir kabka cad ee kaarboon-yar oo sarreeya. Qaab-dhismeedka yar-yar waa hypoeutectic wuxuuna ka kooban yahay eutectic chromium carbides oo ku jira matrix austenite/martensite. Maaddada kaarboon ee chromium A49 ee sarreeya way ka hoosaysaa kan chromium A05 sare. Waxaa jira chromium badan oo ku jira shaxanka. Deegaanka aashitada daciifka ah, chromium A49 oo sarreeya ayaa iska caabbinta daxalka ka sarreeya marka loo eego chromium A05 sare.
Hadda, kuwa aan kor ku soo sheegnay waa walxaha birta ah ee sida caadiga ah loo isticmaaloalaab-qeybiyaha matoorada slurry. Marka loo eego sida gaarka ah ee dhexdhexaadiyaha la raray, waxaanu dooran doonaa qalabka ugu habboon.
Waqtiga post: Seb-17-2021