Cov Txheej Txheem Caij Nyoog Txog Cov Hlau Fabrication - Sab Teeb Duab (3)
4. Qhov Coj Teeb Tsaus Ntoo
4.1 Tej yam yuav tsum muaj rau lub voj voog fillet ntawm qab thiab ncaj ntawm phab ntsa sib sib zog nqus
Raws li pom hauv daim duab hauv qab no, lub voj voog fillet ntawm qhov ntu hauv qab ntawm qhov tob tob hauv qhov tob tob thiab cov phab ntsa yuav tsum loj dua cov phaj thickness: r1 yam. Txhawm rau ua kom sib sib zog nqus ntawm kev sib xyaw xim, r1 = (3 ~ 5) t feem ntau yog siv. Qhov siab tshaj plaws ntawm lub kaum sab xis yuav tsum tsawg dua los yog sib npaug li 8 npaug ntawm lub phaj: r1≤tt.
Daim duab 5.1.1 Lub vojvoog ntawm lub fillet ntawm lub qhov tob tob
4.2 Lub vojvoog ntawm fillet ntawm flange thiab phab ntsa ntawm qhov tob tob
Lub fillet vojvoog ntawm lub flange thiab cov phab ntsa ntawm qhov sib sib zog nqus ntawm qhov yuav tsum yog 2 npaug loj tshaj lub phaj thickness: r2≥2t. Txhawm rau ua kom sib sib zog nqus ntawm kev sib tw ntau, r2 = (5 ~ 10) t feem ntau yog siv. Qhov siab tshaj plaws flange radius yuav tsum tsawg dua los yog sib npaug li 8 npaug ntawm lub phaj, uas yog r2≤8t. (Saib daim duab 5.1.1 saum toj no)
4.3 Lub puab diam iav ntawm ib daim duab tob tob
D ≥ + 10t yog siv rau sab diameter ntawm qhov sib sib zog nqus nqus ib feem, yog li ntawd lub phaj nias tsis wrinkle thaum nws sib sib zog nqus. (saib daim duab 5.1.1 saum toj no)
4.4 Lub voos kheej-kheej ntawm cov pob zeb uas nyob ib sab ntawm ib sab phab ntsa ntawm qhov tob tob
Lub voj voos fillet ntawm ob kab uas nyob ib sab ntawm cov duab tob tob yuav tsum yog r3 ≥3t. Yuav kom txo cov sij hawm cov duab, r3 ≥H / 5 yuav tsum tau muab, kom tiav los ntawm kev ua ib zaug.
Daim duab 5.4.1 Radius ntawm fillet ntawm ob sab phab ntsa ntawm qhov tob tob tob
4.5 Dimension kev sib raug zoo ntawm qhov siab thiab txoj kab uas hla ntawm qhov flangeless tob tob ib feem ntawm qhov uas ua los ntawm kev siv ib zaug
Qhov siab ntawm qhov siab H rau qhov kab D yuav tsum tsawg tshaj los sis sib npaug li 0.4 thaum tsim ib daim duab flangeless tob tob.
Dimensional kev sib raug zoo ntawm qhov siab thiab txoj kab uas hla ntawm qhov flangeless sib sib zog nqus nqus ib feem uas ua tiav los ntawm ib zaug
4.6 Cov kev pom zoo hauv qhov loj me me ntawm cov duab kos duab kos rau kev kos duab
Vim yog qhov sib txawv ntawm qhov sib txawv hauv daim duab, lub thickness ntawm cov khoom hloov cov khoom. Feem ntau, qhov chaw hauv qab yuav khaws thawj qhov tuab tuab, cov khoom hauv qab ces kaum yog thinner, cov khoom sab saum toj uas txav ze rau lub flange ua thicker, thiab cov khoom nyob ib ncig ntawm lub kaum ntse ntse muaj thickened rau ntawm daim duab qes.
4.6.1 Txheem txoj kev los ua kom pom qhov khoom loj ntawm qhov tob tob
Thaum tsim cov khoom sib sib zog nqus, qhov loj ntawm cov khoom ntawm kos duab yuav tsum qhia meej meej hais tias sab nraud qhov ntev los yog sab hauv sab nrauv yuav tsum tau guaranteed, thiab sab hauv thiab sab nraud tsis tuaj yeem ua cim ib cim.
4.6.2 Dimensioning txoj kev ua siab ntev ntawm qhov tob tob
Cim ntu: kev siab ntev ntawm lub voj voog ntawm qhov kev sib txuas thiab lub rooj sib txoos hauv qhov tob thiab qhov tob ntawm qhov tob tob hauv qhov cylindrical los ntawm kev sib sau ua ntej. Qhov sib txawv ntawm qhov sib txawv yog ib nrab ntawm qhov kev nqis peev ntawm lub teb chaws tus qauv 16 qib precision siab kam, thiab cim los ntawm ±.
