Tswv yim rau kev sib tsoo log xaiv

Sib tsoo yog txheej txheem machining uas tuaj yeem pom hauv yuav luag txhua qhov kev cob qhia. Qee qhov kev sib tsoo yog qhov yooj yim, thiab lwm yam kev sib tsoo tej zaum yuav nyuaj, xws li cov uas siv los tswj kev ua siab ntev me me lossis ua cov ntaub ntawv nyuaj. Kev sib tsoo muaj ntau yam kev siv hauv kev tsim khoom. Raws li nrog ntau cov txheej txheem, xaiv cov cuab yeej yog qhov tseem ceeb.

Kev xaiv kom raug ntawm lub log sib tsoo yog qhov tseem ceeb kom tau txais cov txiaj ntsig zoo (uas yog, kom tau txais kev ua tiav zoo dua thiab lub neej sib tsoo ntev dua). Muaj ntau hom kev sib tsoo log xaiv los ntawm, thiab qhov sib txawv ntawm ntau hom abrasives tuaj yeem ua rau tsis meej pem.

Kev sib tsoo lub log yog cov cuab yeej abrasive. Cov khoom abrasive faib rau saum npoo ntawm lub log sib tsoo tsim ntau txhiab cov ntsiab lus txiav, uas tuaj yeem txiav cov khoom me me. Cov khoom no tau tuav ua ke los ntawm kev sib txuas (feem ntau yog sib xyaw ntawm cov av nplaum xaiv) thiab sib cais los ntawm qhov pores.

Thaum siv lub log sib tsoo, cov nplej abrasive txiav rau hauv cov khoom siv hauv av, yog li tshem tawm cov khoom siv tsis zoo hauv cov khoom me me. Thaum xaiv lub log sib tsoo, peb yam tseem ceeb tshaj plaws los xav txog yog hom abrasive, qhov loj ntawm cov nplej zom (los yog cov nplej ntxhib), thiab hom kev sib txuas.

Abrasive

Muaj plaub yam tseem ceeb ntawm abrasive nplej. Txhua hom muaj cov yam ntxwv tshwj xeeb ntawm hardness, lub zog, tawg toughness thiab cuam tshuam tsis kam. Kev xaiv ntawm abrasive yog inevitably cuam tshuam nrog cov khoom ntawm lub workpiece.

Alumina

Alumina yog feem ntau siv abrasive hauv kev sib tsoo log. Nws feem ntau pom zoo rau kev sib tsoo cov ntaub ntawv xws li cov hlau tsis muaj steel thiab cov cuab yeej hlau, tab sis nws kuj tuaj yeem siv rau qee qhov muaj zog aluminium thiab tooj liab alloys.

Silicon Carbide

Nws yog ib qho nyuaj tshaj li tus qauv alumina thiab muaj cov ntse abrasive hais. Nws feem ntau yog siv los zom grey hlau, hlau txias, tooj dag, mos bronze thiab txhuas, nrog rau pob zeb, roj hmab thiab lwm yam hlau uas tsis yog-ferrous.

Zirconia Alumina

Haum rau kev sib tsoo daim ntawv thov uas xav tau siab txiav ntim. Cov nplej no muaj feem xyuam rau cov khoom siv high-tech resin bonds.

Ceramic Alumina

Feem ntau hu ua "ceramic", qhov no yog hom niaj hnub tshaj plaws ntawm abrasive. Cov khoom siv ceramic muaj cov qauv microcrystalline tshwj xeeb thiab tuaj yeem ua rau nws tus kheej ntse. Qhov no abrasive yog qhov nyuaj heev. Nws yog tsuas yog siv rau precision sib tsoo ntawm feem ntau xav tau steels.

Pob zeb

Raws li tau hais los saum toj no, cov xuab zeb hais txog qhov loj ntawm cov khoom abrasive faib rau ntawm lub log sib tsoo. Qhov loj dua qhov particle loj, qhov zoo dua qhov abrasive. Cov lus piav qhia yooj yim ntawm hom abrasive yog li ntawm ntxhib mus rau nruab nrab mus rau nplua.

Sib tsoo cov log uas tsis tshua muaj grit feem ntau yog siv rau cov ntawv thov uas cov khoom tiav tsis tseem ceeb, thiab tsom mus rau kev tshem tawm cov khoom. Ntawm qhov tod tes, thaum ua tiav yog qhov tseem ceeb ntawm qhov project, nws yog qhov zoo dua los siv lub log sib tsoo zoo.

Xaiv hom kev sib tsoo lub log raws li cov khoom koj xav kom zom

Cov khoom siv yuav cuam tshuam rau lub log, qhov loj me thiab qib abrasive koj xaiv. Alumina hom abrasives yog qhov zoo tshaj plaws rau kev sib tsoo cov ntaub ntawv muaj zog xws li steel thiab ferritic cam khwb cia hlau. Hauv cov hlau hnyav dua thiab cov ntawv siv nrog kev sib cuag arcs loj dua, ntau hom alumina brittle yog nyiam. Txoj kev zoo tshaj plaws rau cov ntaub ntawv tsis tshua muaj zog tensile thiab cov ntaub ntawv tsis yog xim hlau yog zom lossis txiav nrog abrasive silicon carbide. Lub hardness ntawm cov khoom txiav txim siab lub traction muaj rau abrasive. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau siv cov nplua-grained sib tsoo lub log los zom cov ntaub ntawv nyuaj, thiab nws yog siv cov khoom nruab nrab- thiab ntxhib-grained sib tsoo log rau cov khoom muag. Rau kev ua haujlwm tau zoo tshaj plaws, qib yuav tsum tau kho kom haum rau qhov hardness ntawm cov khoom.

Cov qoob loo loj

Cov xuab zeb nplej muaj feem xyuam rau qhov loj ntawm cov nplej abrasive faib rau ntawm lub log sib tsoo. Qhov loj dua qhov particle loj, qhov zoo dua qhov abrasive. Cov lus piav qhia yooj yim ntawm hom abrasive yog li ntawm ntxhib mus rau nruab nrab mus rau nplua. Qhov no yog ib lub rooj yooj yim nrog txawv granularities.

Rau cov nplej zoo, xov yog qhov zoo, thaum rau cov nplej zoo, qhov kawg ntawm lub ntsej muag tsis zoo. Feem ntau, ntxhib nto sib tsoo lub log yog siv los tshem tawm cov khoom sai. Thaum kev kho saum npoo yog qhov tseem ceeb, siv cov log sib tsoo zoo. Cov log ntxhib tuaj yeem siv rau cov ntaub ntawv mos, tab sis cov ntaub ntawv tawv thiab nkig yuav tsum yog cov pob zeb zoo. Sib tsoo cov log uas tsis tshua muaj grit feem ntau yog siv rau hauv cov ntawv thov uas cov khoom tiav tsis tseem ceeb, thiab tsom mus rau kev tshem tawm cov khoom.

Kev sib khi

Bonding yog ib yam khoom uas khi cov khoom abrasive ua ke, yog li nws tuaj yeem txiav tau zoo. Lub binder yuav tsum hnav tawm raws li cov khoom abrasive hnav thiab raug tso tawm kom nthuav tawm cov khoom ntse tshiab. Yog vim li cas rau cov nyhuv no yog tias cov xuab zeb nplej ua npub thiab kev sib tsoo siab nce. Rau cov nplej nyuaj-bonded, lub neej kev pabcuam ntawm lub log sib tsoo yog ntev dua. Tab sis lub ntsiab lus ntawm cov khoom kawg yog qis dua, thiab vice versa. Plaub hom kev sib txuas tseem ceeb yog vitrification, shellac, resin thiab roj hmab. Kev sib tsoo log feem ntau yog ua los ntawm iav daim ntawv cog lus, uas suav nrog cov av nplaum sib xyaw ua tib zoo xaiv. Cov hom log no muaj zog, ntxeem tau thiab tsis cuam tshuam los ntawm dej, kua qaub, roj lossis kub hloov.

Ib qho tseem ceeb uas yuav tau xav txog thaum kev sib txuas yog nws lub zog lossis qib. Rau cov ntaub ntawv mos, qhov chaw me me los yog nqaim los yog lub neej ntev ntawm lub log, nws raug nquahu kom siv cov kev sib raug zoo los yog cov qib nyuaj. Rau cov ntaub ntawv nyuaj (xws li cov cuab yeej nyuaj steels lossis carbides), kev sib cuag loj hauv cheeb tsam lossis tshem tawm sai sai, cov ntawv cog lus tsis muaj zog lossis cov qib mos yog nyiam.