Zeziphi iimpawu ekufuneka zibenazo iiPowders ze-Thermal Spray?

Ukongeza kokuhlangabezana neemfuno zokusebenza zokwaleka, iumgubo wokutshiza we-thermalkufuneka kwakhona ihlangabezane neemfuno zenkqubo yokutshiza: inokuthuthelwa kwi-jet flame flow ngokulinganayo, ngokutyibilikayo kwaye ngokuzinzileyo ukuze kuqinisekiswe isitshizi esizinzile kunye nesifanayo se-thermal.Ngoko ke, iimpawu ezisisiseko zepowder ezifana nokuma, ubungakanani beengqungquthela kunye nokusabalalisa ubungakanani be-particle, ubuninzi be-bulk, fluidity kunye nomgangatho womhlaba, zizinto ezibalulekileyo zokusebenza kwe-thermal spray powder.

(1) I-morphology yamasuntswana omgubo

Uninzi lwezixhobo ze-thermal zokutshiza i-alloy powder zilungiswa ngendlela ye-atomization, kwaye i-powder particle morphology ibhekisela kwimilo yejometri kunye neempawu zomphezulu we-powder particles.Ijometri inokuvavanywa ngokulinganisa umlinganiselo we-short axis ukuya kwi-axis ende (ixabiso lezibalo) ze-elliptical spherical particles.Okukhona iphezulu idigri ye-spheroidization, kokukhona i-solid-state fluidity yomgubo ingcono.Ekubeni iqondo le-powder spheroidization alihambelani kuphela kwindlela yokugaya umgubo we-atomization kunye neeparamitha zenkqubo yokugaya i-atomization, kodwa kunye nokubunjwa kweekhemikhali zomgubo ngokwawo.Ke ngoko, idigri ye-spheroidization yeentlobo ezahlukeneyo zepowder nayo yahlukile, kodwa kufuneka kuqinisekiswe ukuba inkqubo yokutshiza inokuhamba kakuhle kunye nokutya komgubo.

Ngamanye amaxesha kukho imingxuma yobukhulu obuhlukeneyo ngaphakathi kwi-thermal spray metal powder particles ezilungiselelwe yi-atomization, ezinye zazo zingena kumphezulu, kwaye ezinye zivaliwe ngaphakathi kweengqungquthela.Ukuba inkqubo yokutshiza ayifanelekanga, iya kuba nefuthe elithe ngqo kumgangatho wengubo.Ukuqwalasela imingxunya enjalo, i-metallographic optical microscope idla ngokusetyenziswa.Iimpawu zomphezulu zibhekisa kumbala womphezulu, ukuguda, njl.

(2) Ubungakanani besuntswana lomgubo

Ukukhethwa kobungakanani be-powder particle kunye noluhlu lwayo luchongwa kakhulu yindlela yokutshiza inkqubo kunye neeparitha zenkqubo yokutshiza.Nokuba uluhlu lwesayizi yesuntswana lomgubo luyafana, umyinge wokwakheka kwebakala lobungakanani besuntswana ayifani.Umzekelo: nangona ubungakanani besuntswana lomgubo likuluhlu lwe-125μm ~ 50μm (-120mesh ~ + 320mesh), umlinganiselo womgubo wamasuntswana amabakala amathathu ahlukeneyo obungakanani be-100μm ~ 125μm, 80μm ~ 100μm, 50μm ~ 80μm ayifani. .Uluhlu lwesayizi ye-powder kunye ne-particle size size grade grade composition inefuthe elithe ngqo kumgangatho wokugquma, ubuninzi be-powder bulk kunye ne-fluidity.

(3) Ukuxinana koBuninzi bomgubo

Ukuxinana komgubo kubhekisa kubunzima beyunithi nganye yomgubo xa upakishwe ngokukhululekileyo.Ekubeni ubuninzi bobuninzi bepowder buhambelana neqondo le-spheroidization yomgubo, ubungakanani kunye nobuninzi bemingxuma ngaphakathi kwi-particle powder particles, kunye nokubunjwa kobungakanani bepowder particle, kuchaphazela nomgangatho wokutshiza.

(4) Ukumanzi komgubo

I-fluidity ye powder yithuba elifunekayo ukuze umlinganiselo othile womgubo uhambe ngokukhululekileyo kwi-funnel eqhelekileyo kunye ne-aperture echaziweyo.Ngokuqhelekileyo ibonakaliswe ngexesha (s) elifunekayo kwi-50g powder ukuhamba nge-funnel eqhelekileyo kunye nobubanzi be-2.5mm.Inefuthe elithile kwinkqubo yokutshiza kunye nokusebenza kakuhle kokutshiza.

I-Chengdu Huarui Industrial Co., Ltd. 

Email: sales.sup1@cdhrmetal.com 

Ifowuni: + 86-28-86799441