Faodaidh tu an fad gearraidh ceart airson eas-tharraing stoc corda rubair obrachadh a-mach leis an àireamhair a leanas. Feuch an dearbhaich thu na luachan ceart airson an trast-thomhas a-staigh (ID) agus earrann-tarsainn a’ phròifil (CS) an toiseach agus an uairsin dèan beagan àireamhachadh sìmplidh.
Mar eisimpleir:
A’ cleachdadh corda le trast-thomhas de 10mm (CS), tha an neach-cleachdaidh airson fàinne-O àbhaisteach a dhèanamh aig a bheil trast-thomhas a-staigh de 300mm.
Seo mar a dh’obraicheas tu a-mach fad a’ chorda gus an fhàinne-O a tha a dhìth a dhèanamh:
300 (ID)+10 (CS)= 310
310 × 3.1415926 = 973.89mm
Thèid an corda a ghearradh gu fad 973.89 mm gus an O-fàinne a tha a dhìth a dhèanamh.
Tha meud corda àbhaisteach air a thomhas a rèir trast-thomhas a’ phròifil. Tha an clàr seo a’ sealltainn an dà chuid na meudan ìmpireil agus meatrach. Tha an clàr cuideachd a’ sealltainn fulangas corda an fhàinne-O, gus an urrainn dhut obrachadh a-mach gu ceart a bheil an corda freagarrach airson an tagraidh shònraichte agad. Am measg nan meudan sin, tha meud an òirleach beagan eadar-dhealaichte bho mheud an fhàinne-O AS568, agus tha am meud meatrach stèidhichte sa mhòr-chuid air margaidh Shìona agus cuid de mhargaidhean thall thairis.Gu bunaiteach, is urrainn dhuinn na meudan corda seo uile a dhèanamh aig càileachd àrd, prìs farpaiseach, agus lìbhrigeadh luath. Mura h-eil meud sònraichte air a liostadh sa chlàr, cuir fios thugainn gus beachdachadh air a’ chorda gnàthaichte agad. Dh’ fhaodadh pacadh a’ chorda rubair a bhith gu math sìmplidh no ceangailte ann an rolair. Feuch an òrdaich thu a rèir do fheumalachdan fhèin.
Cairt Meud Corda O-Fàinne Meatrach | Cairt Meud Corda O-Fàinne Imperial | ||||||
Meatrach CS (mm) | Fìor CS (òirleach) | Fulangas (mm) | CS Ainmeil (òirleach) | Fìor CS (òirleach) | Meatrach CS (mm) | Fulangas (òirleach) | |
2 | 0.079 | ± 0.20 | 1/16″ | 0.07 | 1.78 | ± 0.008 | |
2.5 | 0.098 | ± 0.25 | 3/32″ | 0.103 | 2.62 | ± 0.010 | |
3 | 0.118 | ± 0.25 | 1/8″ | 0.139 | 3.53 | ± 0.014 | |
3.5 | 0.138 | ± 0.35 | 3/16″ | 0.21 | 5.33 | ± 0.016 | |
4 | 0.157 | ± 0.35 | 1/4″ | 0.275 | 6.99 | ± 0.022 | |
4.5 | 0.177 | ± 0.40 | 5/16″ | 0.313 | 7.95 | ± 0.022 | |
5 | 0.197 | ± 0.40 | 3/8″ | 0.375 | 9.53 | ± 0.022 | |
5.5 | 0.217 | ± 0.40 | 13/32″ | 0.406 | 10.31 | ± 0.022 | |
6 | 0.236 | ± 0.40 | 7/16″ | 0.437 | 11.1 | ± 0.026 | |
6.5 | 0.256 | ± 0.55 | 15/32″ | 0.472 | 11.99 | ± 0.026 | |
7 | 0.276 | ± 0.55 | 1/2″ | 0.5 | 12.7 | ± 0.026 | |
7.5 | 0.295 | ± 0.55 | 9/16″ | 0.562 | 14.27 | ± 0.026 | |
8 | 0.315 | ± 0.55 | 5/8″ | 0.625 | 15.88 | ± 0.026 | |
8.5 | 0.335 | ± 0.55 | 3/4″ | 0.75 | 19.05 | ± 0.033 | |
9 | 0.354 | ± 0.55 | 7/8″ | 0.875 | 22.23 | ± 0.033 | |
10 | 0.394 | ± 0.55 | 1″ | 1 | 25.4 | ± 0.039 | |
11 | 0.433 | ± 0.65 | 1-1/16″ | 1.062 | 26.97 | ± 0.039 | |
12 | 0.472 | ± 0.65 | 1-1/8″ | 1.125 | 28.58 | ± 0.039 | |
13 | 0.512 | ± 0.65 | 1-1/4″ | 1.25 | 31.75 | ± 0.039 | |
14 | 0.551 | ± 0.65 | 1-1/2″ | 1.5 | 38.1 | ± 0.039 | |
15 | 0.591 | ± 0.65 | |||||
16 | 0.63 | ± 0.65 | |||||
17 | 0.669 | ± 0.65 | |||||
18 | 0.709 | ± 0.85 | |||||
19 | 0.748 | ± 0.85 | |||||
20 | 0.787 | ± 0.85 | |||||
21 | 0.827 | ± 0.85 | |||||
22 | 0.866 | ± 0.85 | |||||
23 | 0.906 | ± 0.85 | |||||
24 | 0.945 | ± 0.85 | |||||
25 | 0.984 | ± 0.10 | |||||
26 | 1.024 | ± 0.10 | |||||
27 | 1.063 | ± 0.10 | |||||
28 | 1.102 | ± 0.10 | |||||
29 | 1.142 | ± 0.10 | |||||
30 | 1.181 | ± 0.10 |
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