Iimpompo eludakayimpompo ehambisa umxube wezinto eziqinileyo namanzi. Ngoko ke, i-medium iya kuba yi-abrasive kwiindawo ezihambayo zepompo ye-slurry. Ke ngoko, iindawo ezijikelezayo zempompo ye-slurry kufuneka zenziwe ngezinto zokunxiba.
Izinto ezisetyenziswa ngokuqhelekileyo zetsimbi kwiimpompo ze-slurry zihlulwe zibe yintsimbi, i-ductile iron, i-chromium ephezulu, insimbi engenasici, njalo njalo. Intsimbi yokuphoswa kwechromium ephezulu sisizukulwana sesithathu semathiriyeli enganxibiyo ephuhliswe emva kwentsimbi eqhelekileyo etyhidiweyo emhlophe kunye ne-nickel hard cast iron. Ngenxa yeempawu zesakhiwo sentsimbi ephezulu yechromium, inokuqina okuphezulu kakhulu, amandla aphezulu obushushu, ukumelana nobushushu, kunye nokumelana nokunxiba kunentsimbi eqhelekileyo. Intsimbi ephezulu yechromium iye yanconywa njengeyona nto ingcono kakhulu yokulwa ne-abrasive kwixesha langoku, kwaye isetyenziswe ngokubanzi imihla ngemihla.
Umgangatho wesizwe waseTshayina wentsimbi emhlophe ekwaziyo ukumelana nokunxitywa (GB/T8263) ichaza ibakala, ukwakheka, ukuqina, inkqubo yonyango lobushushu, kunye neempawu zokusetyenziswa kwentsimbi ephezulu yechromium emhlophe.
Umgangatho olawulayo we-chromium cast iron ephezulu e-United States yi-ASTMA532M, i-United Kingdom BS4844, iJamani DIN1695, kunye ne-France NFA32401. I-Russia iphuhlise i-12-15% ye-Cr, 3-5.5% Mn kunye ne-200mm yobukhulu bodonga lwe-ball liners kwindawo yangaphambili ye-Soviet Union, kwaye ngoku isebenzisa umgangatho we-OCT7769.
Izinto eziphambili ezisetyenziselwa iindawo ezihambayo zeempompo ze-slurry ekhaya nakwamanye amazwe ziyinsimbi engenasici, i-chromium ephezulu yentsimbi, kunye ne-nickel hard cast iron. Intsimbi ephezulu yechromium yimathiriyeli efanelekileyo yomviwa kwiindawo ezihambayo zeempompo ezinodaka. Ngohlengahlengiso okanye ukhetho lwamanqanaba omxholo wekhabhoni kunye nechromium, ezona ziphumo zibalaseleyo zokusetyenziswa kweendawo ezihambayo phantsi kweemeko ezahlukeneyo zoshishino kunye neemigodi zinokufumaneka.
Intsimbi ephezulu yechromium sisishunqulelo sentsimbi ekhatywayo yechromium emhlophe echasene nokunxiba. Yinto echasene nokunxiba kunye nokusebenza okugqwesileyo kunye nengqalelo ekhethekileyo; inokumelana nokunxiba okuphezulu kunentsimbi yealloyi kunye nokuqina okuphezulu kunye nokomelela kunentsimbi eqhelekileyo ephoswe emhlophe. Kwangaxeshanye, ikwanazo ukumelana nobushushu obuphezulu kunye nokudleka, kudityaniswa nemveliso efanelekileyo kunye neendleko eziphantsi, kwaye yaziwa njengenye yezona zinto zibalaseleyo zokuchasana ne-abrasive kumaxesha anamhlanje.
Ngoku Uthotho lwezixhobo ezixhathisayo zentsimbi yechromium ziqhele ukusetyenziswa:
Iimpompo zodaka ezenziwe ngezinto ze-A05 (Cr26) zezona zisetyenziswa kakhulu kwishishini lemigodi. I-microstructure ye-chromium alloy ephezulu ye-A05 ibonisa ukuba iqulethe i-eutectic chromium carbides kwi-matrix yesayithi ye-marten eqiniswe ngokupheleleyo. Kwizicelo zempompo ezinodaka apho zombini i-abrasive kunye ne-corrosion kodwa i-abrasion ilawula, ukusebenza kwesi sixhobo kubhetele kakhulu kunezinye ii-ayini ezimhlophe.
Nangona iindawo ezimanzi ezenziwe nge-A07 (Cr15Mo3) zinokumelana okuphezulu kokugqoka, ubunzima obungcono, kunye nobomi benkonzo obude kune-A05, iindleko zabo ziphindwe kabini ku-A05, ngoko ukusebenza kweendleko kuphantsi kwaye ububanzi bokusetyenziswa buncinci.
I-A49 (Cr30) yintsimbi ephezulu yechromium ephantsi kwekhabhoni emhlophe. I-microstructure yi-hypoeutectic kwaye iqulethe i-eutectic chromium carbides kwi-matrix ye-austenite / martensite. Umxholo wekhabhoni we-chromium A49 ephezulu ungaphantsi kune-chromium A05 ephezulu. Kukho ichromium eninzi kwi-matrix. Kwimekobume eneasidi ebuthathaka, i-chromium A49 ephezulu inokumelana nokukhula okuphezulu kune-chromium A05 ephezulu.
Okwangoku, oku kukhankanywe ngasentla zizinto zetsimbi eziqhelekileyo ezisetyenziswa kwiumboneleli weempompo ezinodaka. Ngokobuchwephesha bendlela yokuthutha, siya kukhetha eyona nto ifanelekileyo.
Ixesha lokuposa: Sep-17-2021