Qaar ka mid ah qaacidooyinka caadiga ah ee lagu xisaabinayo miisaanka agabka birta ah:
Cutubka AragtidaMiisaankaKaarboonbirPipe (kg) = 0.0246615 x dhumucda derbiga x (dhexroorka dibadda - dhumucda derbiga) x dhererka
Miisaanka birta wareegsan (kg) = 0.00617 x dhexroor x dhexroor x dherer
Miisaanka birta ee laba jibbaaran (kg) = 0.00785 x ballaca dhinaca x ballaca dhinaca x dhererka
Miisaanka birta lix-geesoodka ah (kg) = 0.0068 x ballaca dhinaca ka soo horjeeda x ballaca dhinaca ka soo horjeeda x dhererka
Miisaanka birta ah ee afargeeslaha ah (kg) = 0.0065 x ballaca dhinaca ka soo horjeeda x ballaca dhinaca ka soo horjeeda x dhererka
Miisaanka dib-u-habaynta (kg) = 0.00617 x dhexroorka la xisaabiyay x dhexroorka la xisaabiyay x dhererka
Miisaanka xagasha (kg) = 0.00785 x (ballaca dhinaca + ballaca dhinaca - dhumucda dhinaca) x dhumucda dhinaca x dhererka
Miisaanka birta fidsan (kg) = 0.00785 x dhumucdiis x ballaca dhinaca x dhererka
Miisaanka saxanka birta ah (kg) = 7.85 x dhumucdiisuna x bedka
Miisaanka usha naxaasta ah ee wareegsan (kg) = 0.00698 x dhexroor x dhexroor x dherer
Miisaanka usha naxaasta ah ee wareegsan (kg) = 0.00668 x dhexroor x dhexroor x dherer
Miisaanka usha aluminiumka wareegsan (kg) = 0.0022 x dhexroor x dhexroor x dherer
Miisaanka usha naxaasta ah ee laba jibbaaran (kg) = 0.0089 x ballaca dhinaca x ballaca dhinaca x dhererka
Miisaanka usha naxaasta ah ee laba jibbaaran (kg) = 0.0085 x ballaca dhinaca x ballaca dhinaca x dhererka
Miisaanka ul aluminium ah oo laba jibbaaran (kg) = 0.0028 x ballaca dhinaca x ballaca dhinaca x dhererka
Miisaanka usha naxaasta ah ee lix-geesoodka ah (kg) = 0.0077 x ballaca dhinaca ka soo horjeeda x ballaca dhinaca ka soo horjeeda x dhererka
Miisaanka usha naxaasta ah ee lix-geesoodka ah (kg) = 0.00736 x ballaca dhinaca x ballaca dhinaca ka soo horjeeda x dhererka
Miisaanka birta aluminiumka ah ee lix-jibbaaran (kg) = 0.00242 x ballaca dhinaca ka soo horjeeda x ballaca dhinaca ka soo horjeeda x dhererka
Miisaanka saxanka naxaasta ah (kg) = 0.0089 x dhumucdiisuna x ballaca x dhererka
Miisaanka saxanka naxaasta ah (kg) = 0.0085 x dhumucdiisuna x ballaca x dhererka
Miisaanka saxanka aluminiumka (kg) = 0.00171 x dhumucdiisuna x ballaca x dhererka
Miisaanka tuubada naxaasta ah ee guduudan oo wareegsan (kg) = 0.028 x dhumucda derbiga x (dhexroorka dibadda - dhumucda derbiga) x dhererka
Miisaanka tuubada naxaasta ah ee wareegsan (kg) = 0.0267 x dhumucda derbiga x (dhexroorka dibadda - dhumucda derbiga) x dhererka
Miisaanka tuubada aluminiumka wareegsan (kg) = 0.00879 x dhumucda derbiga x (OD - dhumucda derbiga) x dhererka
Fiiro gaar ah:Cutubka dhererka qaacidada waa mitir, cutubka bedka waa mitir laba jibbaaran, inta soo hartayna waa milimitir. Miisaanka kor ku xusan x qiimaha cutubka ee agabka waa kharashka agabka, oo lagu daray daaweynta dusha sare + kharashka saacadlaha ah ee hab kasta + agabka baakadaha + khidmadda rarista + canshuurta + heerka dulsaarka = xigasho (FOB).
Culays gaar ah oo walxaha si caadi ah loo isticmaalo ah
Bir = 7.85 Aluminium = 2.7 Naxaas = 8.95 Bir aan miridh lahayn = 7.93
Qaaciddada xisaabinta fudud ee miisaanka birta aan lahayn
Miisaanka fidsan ee birta aan lahayn ee mitir laba jibbaaran (kg) qaacidada: 7.93 x dhumuc (mm) x ballac (mm) x dherer (m)
304, 321Bir aan miridh lahayn PipeCutubka Aragtidamiisaanka halkii mitir (kg) qaacidada: 0.02491 x dhumucda derbiga (mm) x (dhexroorka dibadda - dhumucda derbiga) (mm)
316L, 310SBir aan miridh lahayn PipeCutubka Aragtidamiisaanka halkii mitir (kg) qaacidada: 0.02495 x dhumucda derbiga (mm) x (dhexroorka dibadda - dhumucda derbiga) (mm)
Miisaanka birta wareegsan ee aan daxalka lahayn halkii mitir (kg) qaacidada: dhexroorka (mm) dhexroorka (mm) x (nickel aan daxalka lahayn: 0.00623; chromium aan daxalka lahayn: 0.00609)
Xisaabinta miisaanka aragtiyeed ee birta
Xisaabinta miisaanka aragtida ee birta waxaa lagu cabbiraa kiilogaraam (kg). Qaacidadeeda aasaasiga ah waa:
W (miisaanka, kg) = F (aagga isgoyska mm²) x L (dhererka m) x ρ (cufnaanta g/cm³) x 1/1000
Qaacido kala duwan oo miisaan ah oo bir ah ayaa sidan u kala duwan:
Bir wareegsan,Gariir (kg/m)
W=0.006165 xd xd
d = dhexroorka mm
Dhexroorka bir wareegsan oo 100mm ah, hel miisaanka m. Miisaanka m = 0.006165 x 100² = 61.65kg
Dib-u-habayn (kg/m)
W=0.00617 xd xd
d = dhexroorka qaybta mm
Soo hel miisaanka halkii m ee baarka dib-u-warshadaynta oo leh dhexroor qaybeed oo ah 12mm. Miisaanka halkii m = 0.00617 x 12² = 0.89kg
Bir afar geesle ah (kg/m)
W=0.00785 xa xa
a = ballaca dhinaca mm
Soo hel miisaanka halkii m ee bir afargeesle ah oo ballac dhinac ah 20mm. Miisaanka halkii m = 0.00785 x 20² = 3.14kg
Bir fidsan (kg/m)
W=0.00785×b×d
b = ballaca dhinaca mm
d= dhumucdiisuna mm
Bir fidsan oo ballac dhinac ah oo 40mm ah iyo dhumucdiisuna tahay 5mm, hel miisaanka mitirkiiba. Miisaanka halkii m = 0.00785 × 40 × 5 = 1.57kg
Bir lix-geesood ah (kg/m)
W=0.006798×s×s
s=masaafada dhinaca ka soo horjeeda mm
Soo hel miisaanka halkii m ee birta lix-geesoodka ah oo masaafada u jirta 50mm dhinaca ka soo horjeeda. Miisaanka halkii m = 0.006798 × 502 = 17kg
Bir laba jibbaaran (kg/m)
W=0.0065×s×s
s=masaafada dhinaca mm
Soo hel miisaanka halkii m ee bir ah oo afar geesle ah oo masaafaddiisu tahay 80mm dhinaca ka soo horjeeda. Miisaanka halkii m = 0.0065 × 802 = 41.62kg
Bir xagal siman (kg/m)
W = 0.00785 × [d (2b-d) + 0.215 (R²-2r²)]
b = ballaca dhinaca
d = dhumucda geeska
R = gacanka qaansada gudaha
r = gacanka qaansada dhammaadka
Soo hel miisaanka m-kiiba xagal siman oo ah 20 mm x 4 mm. Laga soo bilaabo Buugga Metallurgical, R ee xagal siman oo ah 4mm x 20mm waa 3.5 r-kuna waa 1.2, ka dibna miisaanka m-kiiba = 0.00785 x [4 x (2 x 20-4) + 0.215 x (3.52 - 2 x 1.2² )] = 1.15kg
Xagasha aan sinnayn (kg/m)
W=0.00785×[d(B+bd) +0.215(R²-2r²)]
B= ballaca dhinaca dheer
b= ballaca dhinaca gaaban
d=Dhumucda dhinaca
R= gacanka qaansada gudaha
r= gacanka qaansada dhammaadka
Soo hel miisaanka m kiiba 30 mm × 20 mm × 4 mm xagal aan sinnayn. Laga bilaabo buugga birta si aad u hesho 30 × 20 × 4 xaglo aan sinnayn oo R ah waa 3.5, r waa 1.2, ka dibna miisaanka m kiiba = 0.00785 × [4 × (30 + 20 - 4) + 0.215 × (3.52 - 2 × 1.2 2 )] = 1.46kg
Birta kanaalka (kg/m)
W = 0.00785 × [hd + 2t (bd) + 0.349 (R²-r²)]
h=dherer
b= dhererka lugta
d= dhumucda dhexda
t= dhumucda lugta celcelis ahaan
R= gacanka qaansada gudaha
r = gacanka qaansada dhammaadka
Soo hel miisaanka halkii m ee birta kanaalka ah ee 80 mm × 43 mm × 5 mm. Laga soo bilaabo buugga birta, kanaalku wuxuu leeyahay 8 , R oo ah 8 iyo r oo ah 4. Miisaanka halkii m = 0.00785 × [80 × 5 + 2 × 8 × (43 - 5) + 0.349 × (82 - 4²)] = 8.04kg
I-beam (kg/m)
W=0.00785×[hd+2t(bd)+0.615(R²-r²)
h=dherer
b= dhererka lugta
d= dhumucda dhexda
t= dhumucda lugta celcelis ahaan
r= gacanka qaansada gudaha
r= gacanka qaansada dhammaadka
Soo hel miisaanka halkii m ee I-beam oo ah 250 mm × 118 mm × 10 mm. Buug-gacmeedka qalabka birta ah, I-beam wuxuu leeyahay at oo ah 13, R oo ah 10 iyo r oo ah 5. Miisaanka halkii m = 0.00785 x [250 x 10 + 2 x 13 x (118 - 10) + 0.615 x (10² - 5²)] = 42.03kg
Saxan bir ah (kg/m²)
W=7.85×d
d= dhumucdiisuna
Soo hel miisaanka halkii m² ee saxan bir ah oo dhumucdiisu tahay 4mm. Miisaanka halkii m² = 7.85 x 4 = 31.4kg
Tuubo bir ah (oo ay ku jiraan tuubo bir ah oo aan sinayn oo alxan leh) (kg/m)
W=0.0246615×S (DS)
D = dhexroorka dibadda
S = dhumucda derbiga
Soo hel miisaanka halkii m ee tuubo bir ah oo aan kala go 'lahayn oo dhexroorkeedu yahay 60mm iyo dhumucdeeduna tahay 4mm. Miisaanka halkii m = 0.0246615 × 4 × (60-4) = 5.52kg
Waqtiga boostada: Oktoobar-08-2023