Tsis muaj ntau tus neeg hauv peb lub sijhawm uas tsis muaj nyob hauv lawv lub neej yuav tsum teeb duab lossis teeb duab rau ntawm daim ntawv. Lub peev xwm los ua qhov yooj yim ntawm cov qauv kos yog qee zaum pab tau. Koj tuaj yeem siv sijhawm ntau los piav qhia "ntawm cov ntiv tes" li cas qhov no lossis qhov ntawd tau ua tiav, thaum muaj ib nrais muag ntawm nws daim duab yog txaus los nkag siab nws yam tsis muaj lus.
Nws yog qhov tsim nyog
- - Whatman ntawv;
- - kos duab accessories;
- - nqus daim duab.
Cov Lus Qhia
Kauj ruam 1
Xaiv cov ntawv thooj ntawv uas daim duab yuav raug tua - raws li GOST 9327-60. Cov hom ntawv yuav tsum yog xws li qhov kev pom loj ntawm cov feem hauv kev ntsuas kom tsim nyog, nrog rau txhua qhov kev txiav thiab tshooj uas tsim nyog, tuaj yeem tso rau ntawm daim ntawv. Rau cov ntu yooj yim, xaiv cov qauv A4 (210x297 mm) lossis A3 (297x420 mm). Thawj tus tuaj yeem nyob nrog nws sab ntev nkaus xwb tsuas yog ntsug, qhov thib ob - ntsug thiab kab rov tav.
Kauj ruam 2
Kos ib daim duab tha xim, tawm los ntawm sab laug ntawm nplooj 20 hli, los ntawm lwm peb - 5 hli. Kos lub npe thaiv - lub rooj uas tag nrho cov ntaub ntawv hais txog feem thiab kos duab nkag mus. Nws qhov ntev tau txiav txim siab los ntawm GOST 2.108-68. Qhov dav ntawm lub npe thaiv yog tsis hloov - 185 hli, qhov siab sib txawv ntawm 15 txog 55 hli, nyob ntawm lub hom phiaj ntawm cov duab kos thiab cov hom ntawm cov koom haum rau qhov uas nws ua.
Kauj ruam 3
Xaiv cov nplai ntawm daim duab tseem ceeb. Cov qhab nia uas tsim nyog tau txiav txim los ntawm GOST 2.302-68. Lawv yuav tsum tau xaiv xws li tias txhua lub ntsiab tseem ceeb ntawm ib feem kom pom meej meej rau ntawm daim duab. Yog tias, tib lub sijhawm, qee qhov chaw tsis tau pom meej meej, lawv tuaj yeem nqa tawm mus rau hauv ib qho kev nyias pom nyias, qhia lawv nrog qhov tsim nyog loj.
Kauj ruam 4
Xaiv cov duab tseem ceeb ntawm ntu. Nws yuav tsum sawv cev xws li qhov kev taw qhia ntawm saib lub ntu (cov kev taw qhia qhov kev xav) los ntawm qhov nws cov qauv tsim qhia tawm siab kawg nkaus. Feem ntau, cov duab tseem ceeb yog txoj haujlwm nyob rau hauv uas ib feem ntawm lub tshuab thaum lub sijhawm ua haujlwm tseem ceeb. Cov ntu uas muaj qhov axis ntawm kev sib hloov yog feem ntau tso rau hauv daim duab tseem ceeb kom lub axis yog kab rov tav. Daim duab tseem ceeb yog nyob rau sab saum toj ntawm daim duab ntawm sab laug (yog tias muaj peb qhov kev ntsuas kwv yees) lossis ze rau ntawm qhov chaw (yog tias tsis muaj ib sab ntsuas).
Kauj ruam 5
Txiav txim siab qhov chaw ntawm cov duab seem (pom sab, saib sab saum toj, ntu, txiav). Lub tswv yim ntawm qee qhov yog tsim los ntawm kev npaj nws mus rau peb lossis ob daim phiaj sib nraus sib nraus (Monge's txuj ci). Hauv qhov no, feem yuav tsum tau nyob rau hauv txoj kev uas feem ntau lossis tag nrho nws cov ntsiab lus pom zoo tsis muaj qhov tsis yog sib pauv. Yog tias ib yam ntawm cov hom no tsis yog kev lees paub, tsis txhob ua. Daim duab yuav tsum tsuas muaj cov duab uas xav tau.
Kauj Ruam 6
Xaiv qhov txiav thiab ntu koj xav ua. Lawv qhov sib txawv ntawm lwm qhov yog tias ntu tseem qhia txog dab tsi tom qab lub dav hlau txiav, thaum ntu ntu qhia tsuas yog dab tsi nyob hauv lub dav hlau nws tus kheej. Lub dav hlau txiav tau tuaj yeem taw thiab tawg.
Kauj Ruam 7
Pib kos duab ncaj qha. Thaum kos kab, coj los ntawm GOST 2.303-68, uas txhais tau cov hom kab thiab lawv cov kev cuam tshuam. Muab cov duab ntawm qhov kev ncua deb ntawm txhua lwm qhov uas muaj chaw txaus rau sizing. Yog tias cov dav hlau ntawm ntu hla raws monolith ntawm ntu, hle cov ntu nrog kab khiav ntawm kaum ntawm 45 °. Yog tias tib lub sij hawm cov kab daug lawm ua ke nrog cov kab tseem ceeb ntawm daim duab, koj tuaj yeem kos lawv ntawm kaum ntawm 30 ° lossis 60 °.
Kauj ruam 8
Kos cov kab loj thiab ntxiv qhov ntev. Hauv kev coj ua, raug coj los ntawm cov cai hauv qab no. Qhov kev ncua deb ntawm thawj kab kab mus rau cov duab tawm yuav tsum muaj tsawg kawg 10 hli, qhov kev ncua deb ntawm kab nyob ib sab yuav tsum muaj tsawg kawg yog 7 hli. Cov xib xub yuav tsum txog 5 hli ntev. Sau cov lej raws li GOST 2.304-68, coj lawv qhov siab sib npaug li 3.5-5 hli. Tso cov lej ze rau kab nruab nrab ntawm kab loj (tab sis tsis yog nyob ntawm daim duab kab) nrog qee cov ntsuas tiv thaiv rau cov lej ntawm cov kab nyob ib sab.
