Sɛ ɛba wiase a ɛyɛ nwonwa a ɛfa hose ne tube fittings ho a, asaawa ahorow ahorow a ɛwɔ hɔ no betumi ayɛ nea ɛboro so koraa. Ɛte sɛ nea wugyina nkuruwankuruwa a ɛyɛ nwonwa mu, a emu biara ne ne nnyigyei soronko ne ne mu dɔ, a woresusuw ɔkwan a ɛkɔ nea ɛfata pɛpɛɛpɛ no ho. Wɔ saa asɛm yi mu no, m’ani agye sɛ mɛyi ahintasɛm a ɛwɔ saa nhama yi mu ama wo no adi. Yɛde nnianim asɛm titiriw a ɛfa nea nhama yɛ ho na efi ase - saa spiral grooves a ɛho hia a ɛma nuts, bolts, ne fittings yɛ adwuma wɔ mfiri a wontumi nkan ne nneɛma a wɔde di dwuma da biara da mu.
Wɔ saa akwantuo yi mu no, yɛbɛhwehwɛ nhama ahodoɔ titire no mu, te sɛ BSPP, UN/UNF, ne metric parallel threads, na yɛakɔ yɛn mu akɔ wiase a ɛyɛ teateaa a ɛyɛ teateaa, a metric tapered, BSPT, ne NPT/NPTF nhama ka ho. Eyinom a wobɛte ase no bɛboa wo ma woapaw nneɛma a ɛho ka sua na ɛfata sen biara, na ama woatumi de wo ho ato so na woasiw dwuma bɔne a ɛwɔ wo nnwuma mu no ano. Enti, momma yɛnhyɛ aseɛ wɔ saa thread adventure yi so na yɛnhunu sɛdeɛ ɛfata wo ahiadeɛ!
Nhama a wɔde teɛteɛ nsɛm mu: Mfitiase ne hia a ɛho hia .
Sɛ yɛka nhama ho asɛm a, yɛrekyerɛ helical structure a wɔde di dwuma de dannan rotational ne linear movement anaa force ntam. Nhama wɔ baabiara! Hwɛ nkɔnsɔnkɔnsɔn a ɛkura wo pon mu, wo nsuo toa no anoano, anaa kanea a ɛwɔ wo kanea no mu mpo. Wɔn nyinaa de wɔn ho to nhama so ma ɛtra hɔ na ɛyɛ adwuma yiye.
Nkyerɛaseɛ a ɛfa asaawa ho .
Asaawa yɛ abon a ɛkɔ so kyinkyin twa ho hyia wɔ ɔkwan a ɛyɛ kurukuruwa anaasɛ ɛyɛ kɔntɔnkrɔn so. Saa nhyehyɛe yi ma wotumi ka afã horow no bom yiye. Fa no sɛ antweri bi a ɛyɛ nkuruwankuruwa rebɔ adum bi ho —ɛno ne sɛnea asaawa te wɔ skru anaa bolt so.
Dwuma a nhama di wɔ da biara da dwumadie mu .
Nhama ho hia efisɛ wɔde di dwuma wɔ nneɛma a wontumi nkan a ɛka yɛn da biara da asetra mu. Wɔyɛ abran a wɔwɔ sunsuma mu, a wɔhwɛ hu sɛ nneɛma renhwe ase. Nea enti a ɛho hia paa ni:
l Nneɛma a wɔde bom yɛ adwuma : Efi nneɛma a wɔde yɛ dan mu so kosi mfiri so no, wɔde nhama di dwuma wɔ nhama a wɔde kyekyere nneɛma te sɛ nkɔnsɔnkɔnsɔn ne nhama mu ma nneɛma a wɔde kyekyere ho no kɔ so yɛ nea wɔde abata ho yiye.
L Fluid Control : Wɔ fluid-power industry , threads hwɛ hu sɛ paipu ne tube fittings no rentu, a ɛho hia ma nhyehyɛe ahorow a ɛde nsu, ngo, anaa gas kɔ.
l Precision in Devices : Wɔ mfiri a ɛyɛ pɛpɛɛpɛ mu, te sɛ nnuruyɛ mu nnwinnade mu no, sɛnea asaawa no kɛse te ankasa na ama wɔatumi ayɛ adwuma yiye na wɔayɛ adwuma yiye.
Asaawa ahorow a wɔtaa de di dwuma .
pii wɔ hɔ Nhama ahorow , a emu biara wɔ ne dwumadie pɔtee ne ne su. Kakraa bi ni:
l American Pipe Threads : Wɔde eyinom di dwuma wɔ Amerika Atifi fam de siw paipu nkitahodi ano.
L SAE Unified Threads : Gyinapɛn a wɔde yɛ screw thread a wɔtaa de di dwuma wɔ kar adwumayɛ mu.
L Metric ISO Thread : Metric thread gyinapɛn a wɔde di dwuma kɛse wɔ amanaman ntam.
Asaawa a wɔde hu ade .
Sɛ wopɛ sɛ wuhu asaawa no a, ɛho behia sɛ wuhu susudua atitiriw kakraa bi:
l Major Diameter : akyi ntwemu kɛse sen biara . no Ɔbarima asaawa .
l Minor Diameter : ne ntwemu a ɛyɛ ketewa sen biara, a wohu wɔ no ase . asaawa .
L Pitch Diameter : Eyi yɛ cylinder a wɔayɛ ho mfonini wɔ wɔn adwene mu a ɛfa asaawa ntwemu . a ɛyɛ ɔbarima ne asaawa a ɛwɔ asaawa a ɛyɛ ɔbea no mu no .
Thread identification betumi ayɛ tricky, nanso nnwinnade te sɛ pitch gauge betumi aboa. Saa adwinnade yi susuw asaawa no nnyigyei , a ɛyɛ kwan a efi biako crest so asaawa kɔ foforo so wɔ axial plane mu ..
Nea enti a thread geometry ho hia .
geometric parameters a ɛwɔ asaawa bi mu no kyerɛkyerɛ n’ahoɔden ne ne dwumadie mu. Thread features te sɛ tooth angle ne thread pitch na ɛkyerɛ sɛnea asaawa no bɛkura mu yiye ne ahoɔden dodow a ebetumi asoa. Sɛ nhwɛso no, screw a wɔde nhama abien ayɛ no bɛkɔ n’anim ntɛmntɛm mmɔho abien te sɛ skru a wɔde nhama biako na ɛyɛ adwuma ama kyinhyia biara, na ama wɔanya mfiridwuma mu mfaso ..
Nhama ahorow a ɛwɔ mu kɔ akyiri .
l Parallel thread ne tapered thread yɛ categories atitiriw abien. Nhama a ɛne ne ho di nsɛ no kɔ so yɛ pɛ wɔ ne nyinaa mu, bere a nhama a ɛyɛ teateaa no yɛ teateaa, na ɛboa ma ɛyɛ nsɔano a ɛyɛ den.
l Nhama a ɛwɔ nifa so no na ɛtaa ba, baabi a sɛ wodan kɔ dɔn no so a, ɛma nhama no mu yɛ den. Nhama a ɛwɔ benkum so no ntaa mma na emu yɛ den wɔ ɔkwan a ɛne no bɔ abira so.
a yɛbɛte aseɛ Nhama ne wɔn geometric parameters no ho hia ɛfiri sɛ ɛyɛ adansiɛ mu nneɛma a atwa yɛn ho ahyia. Efi abofra agode asinasin a wɔde bɛka abom so kosi wimhyɛn mu ahobammɔ so no, nhama di dwuma titiriw wɔ yɛn wiase yi mu. As we delve into the specifics of thread design , kae sɛ saa nkuruwankuruwa nketenkete yi yɛ den wɔ sɛnea ɛho hia no mu.
Nhama a wɔde yɛ adwuma no mu nkyekyem .
Mounting vs. transmission vs. nhama a wɔde fa nneɛma so .
Sɛ woresusuw thread ahorow ho a, ɛho hia sɛ wote wɔn dwumadi titiriw ase.
nhama a wɔde si so di dwuma de bɔ nneɛma a ɛwom no ho ban. Wɔtaa de Susuw nkɔnsɔnkɔnsɔn a ɛwɔ kɔmputa so no ho; Wɔayɛ no sɛnea ɛbɛyɛ a ɛbɛkura afã horow.
Transmission threads , ɔkwan foforo so no, ɛyɛ ade titiriw wɔ nhyehyɛe ahorow a ɛde ahoɔden kɔ mu no mu. Saa nhama yi wɔ lead screws of machines mu, baabi a wɔn geometry ma kwan ma wɔdannan rotational movement ma ɛbɛyɛ linear motion.
Nhama a wɔde fa nneɛma so no yɛ soronko kakra. Wodi dwuma titiriw wɔ nsu a wɔde yɛ adwuma mu . Wɔayɛ saa nhama yi sɛnea ɛbɛyɛ a ɛbɛyɛ nsɔano wɔ paipu ne tube fittings mu , na ahwɛ ahu sɛ nsu anaa mframa a wɔde bɛkɔ baabiara a ahobammɔ wom na ɛyɛ adwuma yiye. Wɔayɛ thread type biara ama n’atirimpɔw pɔtee, na thread identification ho hia wɔ applications mu de ahwɛ sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Nhama a ɛwɔ nifa (RH) ne benkum (LH): Nsonsonoe ne nea wɔde di dwuma .
Wobetumi akyekyɛ nhama mu sɛ nsa nifa (RH) nhama anaa nhama a ɛwɔ benkum so (LH) . Nsonsonoe no yɛ tiawa nanso ɛho hia. RH threads tighten clockwise, a ɛyɛ gyinapɛn kwankyerɛ ma dodow no ara thread fasteners . Ɛkame ayɛ sɛ screw anaa bolt biara a ɛtaa ba a wubehyia no, ɛda adi sɛ ebenya RH asaawa. LH threads , ɔkwan foforo so no, fa counterclock kwan no mu den na ɛnyɛ nea ɛtaa ba. Wɔde di dwuma wɔ tebea horow a ebia tumi a ɛkyinkyini no bɛma RH asaawa bi mu ayɛ mmerɛw, te sɛ sakre a wɔde tu kwan benkum so no.
![Nsa nifa so-ne-benkum-nsensanee .]()
l nsa nifa so nhama : .
¡ Tighten dɔn no kwan so .
¡ dodow no ara Screw asaawa a wɔde di dwuma .
l benkum so nhama : .
¡ Tighten a ɛne dɔn no bɔ abira .
¡ Nneɛma titiriw a wɔde di dwuma a ɛbɛma wɔatumi asiw .
Pipe threads: su ne dwumadie .
Pipe threads wɔ ahorow abien titiriw: tapered thread ne parallel thread . tapered threads , te sɛ National Taper Pipe (NPT) , yɛ nea wɔayɛ sɛ ɛbɛma nsɔano bi ayɛ denam nhama no ankasa so. Bere a ɔbarima ne ɔbea nhama no mu yɛ den no, ɛyɛ nsɔano esiane sɛnea ɛtwetwe no nti. Eyi ma wɔyɛ nea eye ma nneɛma a wɔde di dwuma a ɛfa mframa anaa nsu a ɛwɔ nhyɛso ase ho.
Nhama a ɛne ne ho di nsɛ , te sɛ British Standard Pipe Parallel (BSPP) , hwehwɛ ade a wɔde hyɛ mu, te sɛ washer anaa o-ring, na ama wɔatumi de nsu a ɛkɔ mu no abɔ mu. Wɔtaa de di dwuma wɔ nhyɛso a ɛba fam mu ne baabi a ebia ɛho behia sɛ wɔboaboa nkitahodi no ano na wɔpaapae mu mpɛn pii.
![Tapered-thread-vs.-paralel-thread .]()
l nhama a ɛyɛ tapere : .
¡ Ɔman no mu taper paipu (NPT) .
Nsɔano a wonya denam asaawa a ɛtwetwe so .
Wɔde di dwuma wɔ nhyehyɛe ahorow a nhyɛso kɛse wom mu .
l Nhama a ɛne ne ho di nsɛ : .
¡ British Standard Pipe Parallel (BSPP) .
Ɛhwehwɛ sɛ wɔde nneɛma foforo a wɔde hyɛ mu .
Ɛfata sɛ wɔtaa yɛ nhyiam/wɔpaapae mu .
T hRead size ho hia na ɛho hia sɛ wɔkyerɛ thread type no yiye na ama nkitahodi no ayɛ pɛpɛɛpɛ. Sɛ́ ebia wode American Pipe Threads , SAE Unified Threads , anaa Metric ISO nhama bɛyɛ adwuma no , asaawa a ɛfata a wɔde hu ade no ho hia. Nnwinnade te sɛ pitch gauge ne caliper betumi aboa wɔ saa adeyɛ yi mu, adi nnwuma gyinapɛn ahorow so ama nominal size profile na ahwɛ ahu sɛ a ɛfata thread nhyehyɛe ma application no.
ISO nhama ahorow .
ISO Metric Thread (M): Nneɛma a ɛwɔ mu ne nea wɔde di dwuma .
![600px-iso_ne_uts_thread_dimensions.svg .]()
ISO metric thread, a wɔtaa frɛ no M , yɛ amansan asaawa type . Sɛ wɔde di dwuma wɔ wiase nyinaa a, ɛyɛ standardized thread ma general purposes. Pitch diameter ne major diameter yɛ nneɛma atitiriw a ɛwɔ saa thread type . metric threads yi mu no yɛ nea agye din esiane sɛ ɛyɛ mmerɛw na ɛyɛ mmerɛw sɛ wobehu asaawa ..
Nneɛma a wɔde di dwuma no bi ne: - Mfiri - Kar Nnwuma - Nneɛma a wɔde di dwuma .
Metric threads ma ahoɔden ne versatility kari pɛ, na ɛma ɛyɛ thread ahorow a ɛho hia wɔ manufacturing mu no mu biako.
ISO metric fine thread (MF): nsonsonoe ahorow no ho ntease .
ISO metric fine thread , anaa MF , yɛ soronko wɔ standard M asaawa a ɛwɔ ne nnyigyei mu no ho . no Pitch yɛ fɛ yiye, a ɛkyerɛ sɛ nhama no bɛn ho. Eyi de asaawa dodow a ɛkɔ soro ba wɔ unit tenten biara mu. no Asaawa pa ma nhyɛso sohwɛ a eye na eye ma dwumadie wɔ baabi a ɛho hia sɛ wɔyɛ pɛpɛɛpɛ.
Nsonsonoe titiriw bi ne: - Pitch nketewa - asaawa kɛse a ɛyɛ den - ahoɔden kɛse wɔ ntokuru a wɔabɔ mu .
Metric fine threads na wɔtaa de di dwuma wɔ fluid-power adwumayɛ mu ne dwumadie a ɛhia sɛ wɔyɛ nsakraeɛ a ɛyɛ fɛ.
Steel conduit thread (PG): abakɔsɛm ne mprempren a wɔde di dwuma .
Steel conduit thread , a wɔfrɛ no PG , no wɔ abakɔsɛm mu ntease. Efi Germany na wɔde dii dwuma kɛse wɔ Europa nyinaa maa anyinam ahoɔden nsu a wɔde fa nsu mu. Ɛnnɛ, PG nhama wɔ dwumadie pɔtee bi wɔ anyinam ahoɔden adwumayɛ mu, na ɛhwɛ ma nkitahodi a ahobanbɔ wom na wotumi de ho to so.
Mprempren a wɔde di dwuma no fa: - Electrical fittings - conduit systems - Instrumentation .
Ɛmfa ho sɛ a ɛkɔ soro no ahorow nhama PG , da so ara fa ho esiane nnwuma gyinapɛn ne agyapade nhyehyɛe nti.
Trapezoidal Thread (TR): Nsusuiɛ ne dwumadie .
Trapezoidal asaawa , a wɔakyerɛ sɛ Tr , no yɛ ne trapezoidal sẽ nsusuwii. Saa nhyehyɛe yi ma wonya mfiridwuma mu mfaso a ɛyɛ den , na ɛma ɛfata ma adesoa a emu yɛ duru ne kɔbere nkɔnsɔnkɔnsɔn wɔ mfiri mu.
Dwumadi ahorow bi ne: - Tumi a wɔde fa nnipa so - kankyee a wɔsakra fi rotational so kɔ linear so - fa di dwuma wɔ vises ne jacks mu .
no Trapezoidal asaawa yɛ asaawa a wɔtaa de yɛ adwuma wɔ drive systems a wɔyɛ mu. Ne geometry ma kwan ma wɔkyekyɛ nnesoa wɔ beae kɛse bi, na ɛma asaawa no kyɛ ne ne nkwa nna yɛ kɛse.
Wɔ saa ɔfa yi nyinaa mu no, yɛaka ISO nhama ahorow te sɛ metric ISO thread , ISO metric fine thread , ne afoforo ho asɛm. Ɛho hia sɛ wobɛkyerɛ asaawa no yiye ama application a wɔahyɛ da ayɛ no, efisɛ asaawa no kɛse ho hia . Nnwinnade te sɛ pitch gauge ne caliper no som bo kɛse ma thread identification process , hwɛ hu sɛ ɛne ne ho hyia na ɛyɛ adwuma wɔ threaded afã horow mu ..
Amerika asaawa ahorow .
Ɔman no mu asaawa a ɛyɛ mmerɛw (UNC): Nsɛm a wɔaka abom .
Sɛ yɛka Amerika asaawa ahorow ho asɛm a , ɔman no asaawa a ɛyɛ mmerɛw a ɛyɛ biako , anaa UNC , yɛ mu biako nhama ahorow a ɛho hia no . Ɛyɛ gyinapɛn a ɛkyerɛ helical structure ma thread fasteners . yɛ UNC no nea wonim no sɛ ɛyɛ ne nne a ɛtrɛw sen ahorow afoforo, na ɛma ɛfata sɛ wɔde di dwuma wɔ nneɛma ahorow mu wɔ ɔkwan a ɛkɔ akyiri so. Thread size ho hia wɔ ha, na UNC no nhyehyɛe no ma ɛnyɛ den sɛ ɛbɛfa cross-thread na ɛnyɛ den sɛ wobedi ho dwuma.
Unified National Fine Thread (UNF): Nsɛm pɔtee ne nea wɔde di dwuma .
Ɔkwan foforo so no, ɔman no asaawa fɛfɛ a wɔaka abom anaa UNF no yɛ ketewaa bi kɛse . Wei kyerɛ sɛ nhama no bɛn ho. Wɔtaa de UNF no di dwuma bere a ɛho hia sɛ wonya ahoɔden ne pɛpɛɛpɛyɛ a ɛkorɔn no. Ɛtaa ba wɔ nsuo-tumi adwumayɛ mu ɛfiri sɛ nhama a ɛyɛ fɛ no ma ɛyɛ den na ɛyɛ den. Ɛho hia sɛ wobɛkyerɛ asaawa no yie berɛ a wo ne UNF reyɛ adwuma de ahwɛ sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Ɔman Asaawa Titiriw (UNS) a wɔaka abom: su soronko .
Ɔman no asaawa soronko anaa UNS a wɔaka abom no yɛ Amerika nhama foforo a ɛda nsow esiane sɛ wɔayɛ no sɛnea wɔpɛ soronko nti. UNS nyɛ standardized te sɛ UNC anaa UNF , a ɛma kwan ma nsakrae ba asaawa ntam ne ne ntwemu. Saa nsakraeɛ yi ma UNS kɔ-kɔ ma applications soronko bi a standard thread sizes nnɔɔso. Thread identification for UNS hwehwɛ sɛ wɔde susudua a ɛyɛ pɛpɛɛpɛ na ɛyɛ adwuma, na mpɛn pii no wɔde pitch gauge anaa caliper di dwuma ..
Ɔman Taper Pipe Nhama (NPT ne NPTF)
| Dash kɛse (nominal size) | asaawa Pitch | Male Thread OD MM | ɔbarima asaawa od inches | ɔbea asaawa ID mm | ɔbea asaawa ID inches |
| -02 (1/8) . | 27 | 10.3 | 0.41 | 9.4 | 0.37 |
| -04 (1/4) . | 18 | 13.7 | 0.54 | 12.4 | 0.49 |
| -06 (3/8) . | 18 | 17.3 | 0.68 | 15.7 | 0.62 |
| -08 (1/2) . | 14 | 21.3 | 0.84 | 19.3 | 0.76 |
| -10 (5/8) . | 14 | 22.9 | 0.90 | 21.1 | 0.83 |
| -12 (3/4) . | 14 | 26.9 | 1.06 | 24.9 | 0.98 |
| -16 (1) . | 111⁄2 . | 33.3 | 1.31 | 31.5 | 1.24 |
| -20 (1 1⁄4) . | 111⁄2 . | 42.2 | 1.66 | 40.1 | 1.58 |
| -24 (1 1⁄2) . | 111⁄2 . | 48.3 | 1.90 | 46.2 | 1.82 |
| -32 (2) . | 111⁄2 . | 60.4 | 2.38 | 57.9 | 2.29 |
**OD = abɔnten ntwemu id = mu ntwemu .
Sɛ yɛkɔ American Pipe Threads , ɔman no taper pipe threads no ho hia kɛse. Nneɛma atitiriw abien na ɛwɔ hɔ: NPT ne NPTF . N’abien nyinaa yɛ tapered thread types a ɛkyerɛ sɛ ɛyɛ seal bere a wɔreyɛ den no. NPT , anaa ɔman no taper pipe , abu so na ɛhwehwɛ sɛ wɔde nneɛma foforo hyɛ mu. Wɔayɛ NPTF , anaa National Taper Pipe Dryseal , sɛ ɛbɛyɛ nsɔano a ɛyɛ den a enni nsɔano nneɛma foforo. NPT ne NPTF ho hia wɔ nsuo-tumi adwumayɛ mu ma hose fittings , tube fittings , ne paipu nkitahodi. Thread pitch gauge yɛ adwinnadeɛ a ɛho hia ma thread identification process wɔ NPT ne NPTF nhyehyɛeɛ no nyinaa mu.
yi ho ntease Amerika asaawa ahorow yɛ ade titiriw ma adwumayɛfo a wɔwɔ nnwuma pii mu. SAE Unified Threads , a UNC , UNF , ne UNS ka ho , ne NPT ne NPTF , di dwuma titiriw wɔ nhama a wɔde kyekyere nneɛma ne nkitahodi a ɛfata a wɔyɛ mu . a ɛfata no Thread identification hwɛ hu sɛ nneɛma a ɛwɔ mu no fata yiye na ɛyɛ adwuma sɛnea wɔahyɛ da ayɛ no.
Britania Whitworth Nhama .
Britaniafo gyinapɛn Whitworth a ɛyɛ mmerɛw (BSW/WW) .
![Whitworth .]()
Britania Standard Whitworth Coarse (BSW) , a wɔtaa frɛ no WW ma Whitworth no yɛ asaawa a ɛwɔ abakɔsɛm a ɛyɛ fɛ. Na ɛyɛ wiase no mu nhyehyɛe a edi kan a wɔde skru a wɔde skru ayɛ nhyehyɛe, a Joseph Whitworth na ɔyɛɛ ho mfonini wɔ 1841. Ná nhyehyɛe no yɛ nea ɛyɛ nsakrae, na ɛde gyinapɛn bi sii hɔ maa nhama a wɔde kyekyere nneɛma ho wɔ Britania Ahemman no nyinaa mu ne akyirikyiri. no bɛyɛɛ Whitworth asaawa sen biara no mu biako asaawa ahorow a ɛho hia , a nea ɛda nsow ne ne nhama a ɛyɛ digrii 55 ne nsensanee a ɛyɛ kurukuruwa ne ntini. Saa abakɔsɛm mu asaawa nhyehyɛe yi too fapem maa nhama ahorow pii a wɔtaa hu a yehu nnɛ no.
Britaniafo gyinapɛn a ɛyɛ fɛ (BSF) .
Sɛ yɛkɔ British Standard Fine (BSF) so a , saa thread type yi yɛ BSW no fã a ɛyɛ fɛ sen biara. Wɔ ɛnne nnyigyei ketewaa bi a ɛyɛ kwan a ɛda nhama a ɛbɛn ntam no mu no , wɔyɛɛ BSF sɛnea ɛbɛyɛ a ɛbɛma nneɛma a wɔde di dwuma pɛpɛɛpɛ ne ahoɔden a ɛkorɔn wɔ nneɛma a wɔde di dwuma wɔ baabi a nhama no kɛse ho hia no mu . Ntrɛwmu titiriw no da so ara te sɛ BSW, nanso ɛnne a ɛyɛ fɛ no ma wotumi nya nhama pii wɔ nsateakwaa biara mu, na ɛkyerɛ ase sɛ ɛfata a ɛyɛ den na ɛyɛ den. BSF di dwuma wɔ kar adwumayɛ mu, baabi a pɛpɛɛpɛyɛ yɛ ade titiriw. Wɔtaa de
British Standard Pipe (Bsp/G)
| Dash Size (nominal Size) | Asaawa Pitch | Male Thread OD MM | Ɔbarima Asaawa Od Inches | Ɔbaa ID MM | Ɔbaa Asaawa ID Inches |
| -02 (1/8) . | 28 | 9.7 | 0.38 | 8.9 | 0.35 |
| -04 (1/4) . | 19 | 13.2 | 0.52 | 11.9 | 0.47 |
| -06 (3/8) . | 19 | 16.5 | 0.65 | 15.2 | 0.60 |
| -08 (1/2) . | 14 | 20.8 | 0.82 | 19.1 | 0.75 |
| -10 (5/8) . | 14 | 22.4 | 0.88 | 20.3 | 0.80 |
| -12 (3/4) . | 14 | 26.4 | 1.04 | 24.6 | 0.97 |
| -16 (1) . | 11 | 33.0 | 1.30 | 31.0 | 1.22 |
| -20 (1 1⁄4) . | 11 | 41.9 | 1.65 | 39.6 | 1.56 |
| -24 (1 1⁄2) . | 11 | 47.8 | 1.88 | 45.5 | 1.79 |
| -32 (2) . | 11 | 59.7 | 2.35 | 57.4 | 2.26 |
British Standard Pipe (BSP) , a wɔsan frɛ no G , yɛ asaawa bi a ɛne no di nsɛ a wɔtaa de di dwuma wɔ nsu a wɔde yɛ adwuma mu . Nea ɛnte sɛ nhama a ɛte sɛ taper no, BSP nhama no ma ne kɛse yɛ pɛ fi n’awiei kosi n’awiei, na ɛma ɛyɛ nhama a ɛne ne ho di nsɛ . Saa nhyehyɛe yi ho hia kɛse ma hose fittings ne tube fittings , baabi a ɛho hia sɛ wɔyɛ nsɔano a ɛkɔ so daa . Wɔtaa de BSP toto American pipe threads ho , nanso ɛnyɛ nea wotumi sesa esiane nsonsonoe a ɛwɔ asaawa no su ne ne nnyigyei mu nti.
British Standard Pipe Taper (BSPT/R)
| BSP Asaawa Kɛseɛ | Abɔnten | TPI a ɛwɔ akyi . |
| 1/16 nsateakwaa BSP . | 7.7 mm / 0.304′′ . | 28 |
| 1/8 nsateakwaa BSP . | 9.7 mm / 0.383′′ . | 28 |
| 1/4 nsateakwaa BSP . | 13.16 mm / 0.518′′ . | 19 |
| 3/8 nsateakwaa BSP . | 16.66 mm / 0.656′′ . | 19 |
| BSP a ne kɛse yɛ nsateakwaa 1/2 . | 20.99 mm / 0.825′′ . | 14 |
| 5/8 nsateakwaa BSP . | 22.99 mm / 0.902′′ . | 14 |
| 3/4 nsateakwaa BSP . | 26.44 mm / 1.041′′ . | 14 |
| 7/8 nsateakwaa BSP . | 30.20 mm / 1.189′′ . | 14 |
| 1 nsateakwaa Bsp . | 33.25 mm / 1.309′′ . | 11 |
| 1-1/4 nsateakwaa BSP . | 41.91 mm / 1.650′′ . | 11 |
| 1-1/2 nsateakwaa BSP . | 47.80 mm / 1.882′′ . | 11 |
| 2 nsateakwaa Bsp . | 59.61 mm / 2.347′′ . | 11 |
| 2-1/4 nsateakwaa BSP . | 65.71 mm / 2.587′′ . | 11 |
| 2-1/2 nsateakwaa BSP . | 75.18 mm / 2.96′′ . | 11 |
| 3 nsateakwaa Bsp . | 87.88 mm / 3.46′′ . | 11 |
| 4 nsateakwaa Bsp . | 113.03 mm / 4.45′′ . | 11 |
| 5 nsateakwaa Bsp . | 138.43 mm / 5.45′′ . | 11 |
| 6 nsateakwaa Bsp . | 163.83 mm / 6.45′′ . | 11 |
Nea etwa to no, Britania Standard Pipe Taper (BSPT) , a wogye tom sɛ R , yɛ asaawa a ɛyɛ teateaa a wɔde di dwuma wɔ pii mu paipu nkitahodi . Taper no yɛ nsɔano denam nhama a ɛwɔ ɔbarima asaawa no mu a ɛhyɛ no ma ɛkɔ asaawa a ɛyɛ ɔbea no mu , na ɛma nsu ntumi nkɔ mu. BSPT abu so titiriw wɔ nsu a wɔde yɛ adwuma mu , baabi a nsu a ɛtwetwe no ano a wosiw ho hia kɛse no. hwɛ Angle a ɛyɛ teateaa no hu sɛ asaawa biara mu yɛ den kɔ nea edi hɔ no mu, na ɛma wonya nkitahodi a wotumi de ho to so ma paipu , tube , na ɛfata nkitahodi ..
Wɔ saa mu biara mu no, Britania Whitworth nhama yi , nhama a wɔde kyerɛ no ho hia. nnwinnade te sɛ pitch gauge anaa caliper di dwuma de Wɔtaa de kyerɛ asaawa no su ne ne kɛse. Nteaseɛ a ɛwɔ saa nhama yi geometric parameters , firi major diameter kɔsi pitch diameter , ho hia ma ɛne sɛ ɛbɛhyia na ɛyɛ adwuma wɔ threaded assemblies mu. Sɛ́ ɛyɛ abakɔsɛm mu mfiri anaa nnɛyi dwumadie mu no, Britaniafoɔ gyinapɛn nhama da so ara yɛ adeɛ a ɛho hia, ɛgyina asaawa ahodoɔ foforɔ a ɛho hia te sɛ ISO nhama ahodoɔ , metric ISO nhama , ne Amerika nhama ahodoɔ ho ..
paipu nhama .
Nteaseɛ a ɛfa paipu nhama ho wɔ nsuo ne gas a wɔde si hɔ mu .
Pipe threads yɛ integral wɔ hwɛ hu sɛ leak-proof connections wɔ plumbing ne gas installations mu. Wɔyɛ ade titiriw wɔ nsu afiri, valve, ne fittings a wɔde ka bom no mu yiye. Thread size ho hia wɔ saa dwumadie yi mu, ɛfiri sɛ ɛsɛ sɛ ɛfa nsuo a ɛsene ne nhyɛsoɔ ahwehwɛdeɛ a ɛwɔ nhyehyɛeɛ no mu no ho.
Tapered vs. conical pipe nhama .
Sɛ yɛka paipu nhama ho asɛm a , yɛtaa twe adwene si ahorow abien so: tapered thread ne conical thread . Asaawa a ɛyɛ teateaa , a wɔsan frɛ no National Taper Pipe (NPT) , no, ne kɛse so tew nkakrankakra fi n’awiei biako, na ɛma nsɔano a ɛyɛ den bere a nhama no reyɛ adwuma no. Conical threads yɛ pɛ nanso ɛwɔ cone shape kakra, ɛde ahoɔden foforo ka nkitahodi no ho.
nhama a ɛyɛ teateaa di dwuma wɔ Wɔtaa de nsu a wɔde yɛ adwuma mu . Wɔnam nhama no ntwitwiridii so na ɛyɛ nsɔano. Pipe dope anaa teflon tape taa yɛ adwuma sɛ nneɛma a wɔde siw ano de hwɛ hu sɛ nkitahodi biara nni mu.
Nea ɛne eyi bɔ abira no, conical pipe threads ntaa mma nanso ɛda so ara ho hia. Wɔtaa hu wɔn wɔ dwumadie pɔtee bi mu wɔ baabi a nhyɛsoɔ ne mfiri ahoɔden a wɔhwehwɛ no kɔ soro.
Nhama a ɛwɔ paipu mu a wobehu .
Asaawa a wɔde hu ade no ho hia kɛse wɔ paipu nhyehyɛe ahorow a wosiesie ne ne boaboa ano mu. afiri a wɔde kyerɛ sɛnea nneɛma te anaasɛ caliper Wobetumi de akyerɛ asaawa no su ne ne kɛse. Sɛ nhwɛso no, American Pipe Threads ne SAE Unified Threads yɛ nhama ahorow a wɔtaa de di dwuma a ɛwɔ su ahorow a ɛda nsow.
Wɔde Amerika asaawa ahorow te sɛ NPT di dwuma kɛse wɔ Amerika Atifi fam nyinaa. Wɔdi Unified Thread Standard , a ɛka ho ne Unified National Coarse Thread (UNC) ne Ɔman Fine Thread (UNF) a wɔaka abom no akyi ..
British Standard Pipe Taper (BSPT) ne British Standard Whitworth (BSW) nhama, a British Standard Whitworth Coarse (BSWC) , ka ho yɛ Britaniafo nhama ahorow a wɔde di dwuma pɔtee, titiriw wɔ United Kingdom ne aman a wɔbom yɛ adwuma no mu.
Thread parameters ne nnwinnade .
Pitch asaa ntwemu no asaawa yɛ susudua a ɛho hia. Ɛyɛ diameter a ɛwɔ imaginary cylinder no mu baabi a asaawa no mu duru ne yɛ pɛ asaawa no ntam kwan . Sɛnea ɛbɛyɛ na wɔasusuw nneɛma no pɛpɛɛpɛ no, wɔde ɛnne nnyigyei a wɔde kyerɛ biribi anaa caliper di dwuma.
Asaawa a ɛyɛ mmarima ne mmea nhama yɛ nsɛmfua a wɔde kyerɛkyerɛ abɔnten nhama no ntwemu ne nhama a ɛwɔ mu , sɛnea ɛte biara. Wohu asaawa a ɛyɛ mmarima wɔ nsu afiri anaa nneɛma a wɔde hyɛ mu akyi, bere a mmea nhama wɔ mu.
Nhama a ɛwɔ nifa so ne gyinapɛn a ɛwɔ adwuma no mu, baabi a nhama no mu yɛ den wɔ dɔn no kwan so. Nhama a ɛwɔ benkum so no ntaa mma na emu yɛ den wɔ ɔkwan a ɛne dɔn no bɔ abira so.
Afotusɛm a mfaso wɔ so ma paipu asaawa a wɔpaw .
l bere nyinaa fa pitch gauge di dwuma de si asaa no ano ne ne ntwemu so dua ..
l Hwɛ sɛ wɔde aduru a asɔ a ɛyɛ teateaa no ano a ɛfata . wɔde hyɛ nhama mu .
l Sɛ wopɛ sɛ wode nhyɛso kɛse di dwuma a, susuw conical threads ho ma wɔn ahoɔden a ɛkɔ soro.
l Hu nnwuma gyinapɛn ahorow a ɛfa instɔlehyɛn pɔtee a woreyɛ ho adwuma no ho.
l Fa a ɛfata no di dwuma thread identification process na amma nkitahodi ahorow a ɛne ne ho nhyia no amma.
Nsonsonoe a ɛwɔ tapered ne conical pipe threads ntam no ho ntease ho hia ma obiara a ɔwɔ plumbing anaa gas installation fields no mu. yiye Nhama a wɔde kyerɛ ne nea wɔpaw no betumi asiw nsu a ɛretu no ano, ahwɛ ahu sɛ nhyehyɛe no mudi mu kura, na akura ahobammɔ gyinapɛn ahorow mu wɔ saa dwumadie a ɛho hia yi mu.
Nhama ahorow a ɛkɔ anim .
Sɛ ɛba asaawa ahorow so a, yɛn mu dodow no ara nim ahorow a ɛtaa ba a yehyia wɔ nneɛma a wɔde di dwuma da biara da te sɛ nhama ne nnuaba mu no. Nanso, wiase bi wɔ hɔ a ɛyɛ asaawa ahorow a ɛyɛ den kɛse a edi dwuma titiriw wɔ nnwuma ahorow mu. Momma yɛnkɔ asaawa ahorow a ɛkɔ anim yi bi mu ne wɔn application titiriw bi.
Acme Nhama a Wɔde Yɛ Nneɛma .
Wonim acme nhama sɛ ɛyɛ trapezoidal, na ɛma ɛyɛ den na ɛfata yiye ma adesoa a emu yɛ duru sen screw nhama a wɔtaa de di dwuma no . Wɔtaa hu wɔn wɔ mfiri te sɛ vices ne jacks a ahoɔden ne ahoɔden a ɛtra hɔ kyɛ mu.
KNUCKLE NHWEHWƐMU .
Knuckle threads yɛ soronko wɔ wɔn crests ne ne ntini a ɛyɛ kurukuruwa no ho. Wɔtaa de di dwuma wɔ mmeae a ebia nhama betumi ayɛ nea ɛyɛ mmerɛw sɛ wobedi ho dwuma anaasɛ ɛho behia sɛ ɛyɛ mmerɛw sɛ wobesiesie, te sɛ aduan ne anonne adwuma mu ..
Buttress nhama a wɔde yɛ adwuma .
Buttress threads wɔ design a ɛma kwan ma wɔde ahoɔden a ɛkorɔn kɔ ɔkwan biako so. Wɔn ne go-to thread ma applications te sɛ presses baabi a wuhia threads no na ama woatumi adi ahoɔden pii ho dwuma wɔ linear kwan so.
Worm nhama .
Worm threads ho hia wɔ nhyehyɛe ahorow a ɛsɛ sɛ ɛkyinkyini a ɛkɔ so dannan no ma ɛdan linear biako. Wɔyɛ ade titiriw wɔ gear nhyehyɛe mu, te sɛ nea wohu wɔ tuning instruments anaa elevators mu no.
Nneɛma titiriw a wɔde di dwuma .
Asaawa biara a ɛkɔ anim no di atirimpɔw pɔtee bi ho dwuma, a wɔtaa yɛ no ma ɛne nnwuma pɔtee bi ahiade hyia.
l Acme nhama no nyɛ den kɛkɛ; Wɔsan nso de pɛpɛɛpɛyɛ ma, na ɛma ɛyɛ nea eye ma nsu-tumi yɛ adwuma ..
L Knuckle nhama, a ɛwɔ tumi a ɛde ko tia ɔsɛe no, ho hia kɛse wɔ kuayɛ mu baabi a mfiri hyia tebea horow a emu yɛ den.
l buttress threads ho hia wɔ metalworking equipment mu esiane sɛ etumi gyina axial thrust a ɛkorɔn ano nti.
L Worm Threads yɛ akyi dompe a ɛwɔ motion control systems , a ɛdi dwuma titire wɔ nnwuma te sɛ kar ne ahunmu.
nnwuma a ɛwɔ hɔ a saa nhama yi ho hia .
Advanced thread types nyɛ adwumayɛ ho asɛm kɛkɛ; Wɔfa pɛpɛɛpɛyɛ ne ahotoso ho wɔ mmeae a ɛho hia kɛse.
l Wimhyɛn adwuma no de ne ho to saa nhama titiriw yi so ma wimhyɛn no afã horow no ahobammɔ ne ne dwumadi.
l Wɔ po so adwumayɛ mu no , saa nhama yi a ɛbɛkyɛ no ho hia ma nkyene nsu a ɛyɛ mmerɛw a ebetumi agyina ano.
l Aduruyɛbea no de nhama a ɛkɔ anim di dwuma wɔ nnwinnade a egye nkwa mu, baabi a huammɔdi nyɛ ɔkwan a wobetumi afa so.
l Energy sector no gyina saa nhama yi so ma mfiri a emu yɛ duru no siesie na ɛyɛ adwuma.
Bere a asaawa ahorow a wɔtaa de di dwuma te sɛ ISO metric nhama anaa american paipu nhama no yiye no, ɛyɛ nhama a ɛkɔ anim yi na ɛtaa gye nsɛm a ɛwɔ anim wɔ nneɛma titiriw mu. wonim Thread size ho hia , na saa ara na thread a wɔde di dwuma no nso te. Sɛ ɛyɛ acme thread a ɛwɔ lathe anaa worm thread mu wɔ gearbox mu a, saa thread types a ɛho hia yi ho nteaseɛ ho hia ma engineers ne technicians wɔ nnwuma ahorow mu. Sɛ wopaw asaawa a ɛfata —sɛ ɛyɛ parallel asaawa anaa asaawa a ɛyɛ teateaa a —ebetumi ama nsonsonoe a ɛwɔ asaawa no afã horow no adwumayɛ ne ne tenten mu no nyinaa aba.
Geometric parameters a ɛwɔ nhama mu .
Nhama a ɛwɔ geometric parameters a ɛwɔ threads mu no ho hia ma obiara a ɔde threaded parts yɛ adwuma . Sɛ́ ebia wowɔ fluid-power adwumayɛ mu anaasɛ woredi thread fasteners ho dwuma no, nim a wunim saa parameters yi hwɛ hu sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Major ne Minor Diameters .
Ne ntwemu titiriw no kyerɛ ade kɛse a ɛyɛ kɛse a ɛwɔ screw thread mu . Ɛyɛ asaawa akyi ntwemu a ɛyɛ ɔbarima de anaasɛ asaawa a ɛyɛ ɔbea kɛse no . Nea ɛne no bɔ abira no, ne ntwemu ketewaa no yɛ asaawa no ntwemu ketewaa koraa. Ɛyɛ ntwemu na ɛka cylinder a wɔayɛ ho mfonini wɔ adwene mu no kɛkɛ asaawa no atifi wɔ abɔnten asaawa so anaasɛ asaawa a ɛwɔ asaawa a ɛwɔ mu . no kɛse ho hia ; Enti, sɛ wubenya saa ntwemu yi yiye a, ɛho hia.
Pitch diameter ne ne hia .
Pitch diameter yɛ parameter a ɛho hia a ɛda diameter akɛse ne nketewa ntam. Ɛyɛ diameter a ɛyɛ adwene mu co-axial cylinder a kwan a ɛda pitch diameter intercept wɔ ɔfã biako kosi asaawa no ano wɔ ɔfã a ɛne no bɔ abira no yɛ pɛ. Pitch diameter no ho hia efisɛ ɛboa ma wɔkyerɛ asaawa no na ɛhwɛ ma nkitahodi a ɛfata a ɛfata ..
Thread pitch ne ne dwumadie .
Thread pitch yɛ linear kwan a ɛda abien a ɛbɛn so nhama wɔ asaawa no so wɔ axial plane mu . Ɛyɛ nhama dodow a wɔde susuw ade wɔ unit tenten biara mu tẽẽ na ɛho hia kɛse ma nhama a wɔde hu . Wɔ metric nhyehyɛe no mu no , wɔkyerɛkyerɛ ɛnne nnyigyei mu wɔ milimita mu, bere a wɔ ahemman no unit-based systems te sɛ SAE Unified threads anaa American pipe threads mu no , wɔda no adi sɛ threads dodow wɔ inch biara mu. pitch gauges susuw saa parameter yi pɛpɛɛpɛ. Wɔtaa de
Nteaseɛ a ɛfa asaawa anim ho .
Lead yɛ kwan a screw thread bi fa so fa ne axis no so a ɛkyinkyini biako koraa. Wɔ screw a wɔde nhama biako na ɛyɛ no fam no, kɔbere no ne ɛnne no yɛ pɛ. Nanso, wɔ screw a wɔde nhama abien ayɛ ho no , nea edi kan no yɛ ɛnne no mmɔho abien. Saa adwene yi ho hia ma dwumadie a ɛhia sɛ wonya mfiri mu mfasoɔ ..
Ɛse a ɛwɔ sẽ ne asaawa anim .
Nsõ no anim a wɔsan frɛ no asaawa anim no yɛ asaawa no afã horow no anim . te Nhama ahorow sɛ Metric ISO nhama , British Whitworth nhama , anaa nhama a wɔaka abom gyinapɛn no wɔ gyinapɛn ahorow a ɛsono emu biara. Sɛ nhwɛso no, mpɛn pii no, metric nhama wɔ anim a ɛyɛ digrii 60 , bere a Britaniafo standard Whitworth a ɛyɛ mmerɛw no wɔ anim a ɛyɛ digrii 55 . Nsõ no nsusuwii ne anim no nya asaawa geometry ne n’ahoɔden so nkɛntɛnso.
Geometric parameters te sɛ major diameter , minor diameter , pitch diameter , thread pitch , ne tooth angle di dwuma titiriw wɔ asaawa nhyehyɛe mu . Wɔde saa parameters yi di dwuma wɔ ahorow ahorow so, a threads parallel thread , tapered threads , iso thread types , ne American thread types ka ho . Nteaseɛ a ɛfata ne susudua a wɔde nnwinnadeɛ te sɛ calipers ne pitch gauges di dwuma no ho hia na ama wɔahwɛ ahu sɛ asaawa a wɔhunu no yie na ɛne ne ho hyia wɔ fittings te sɛ hose fittings , pipe , ne tube fittings mu . Kae sɛ, wɔ mu no threads , , pɛpɛɛpɛyɛ yɛ ade titiriw.
Anamɔn-anamɔn akwankyerɛ a ɛfa asaawa a wɔde hu ho .
Anamɔn 1: Nsonsonoe a ɛda nhama a ɛne ne ho di nsɛ ne nea ɛyɛ teateaa ntam .
Sɛ woredi threads ho dwuma a , ɛho hia sɛ wuhu sɛ woreyɛ parallel anaa tapered thread types adwuma. Nhama a ɛne ne ho di nsɛ no ma ne ntwemu yɛ pɛ wɔ awiei-kɔ-awiei, bere a nhama a ɛyɛ teateaa no yɛ teateaa, na ɛyɛ ketewaa wɔ awiei no. Sɛ wopɛ sɛ wohu wɔn mu a, hwɛ wɔn mu yiye. Nhama a ɛne ne ho di nsɛ no bɛda adi sɛ ɛyɛ pɛ, bere a ɛte sɛ nea nhama a ɛyɛ teateaa no bɛbom.
Sɛ wopɛ mfiridwuma ho kwan a, fa caliper di dwuma . Susuw ne ntwemu wɔ asaawa no mmeae ahorow. Sɛ susudua no yɛ pɛ a, ɛyɛ asaawa a ɛne ne ho di nsɛ . Sɛ ɛso tew a, woanya asaawa a ɛyɛ teateaa . Wɔ Fluid-Power Industry , mu no, nsonsonoe yi a wobehu no ho hia na ama wɔanya nkitahodi a ɛfata a ɛfata ..
Anamɔn 2: Asaawa a wɔde susuw nneɛma a wɔde gauge susu .
Asaawa bi mu nnyigyei yɛ kwan . Sɛnea ɛbɛyɛ na woasusuw eyi no, wode ne crests ntam bedi dwuma pitch gauge . Saa adwinnade yi wɔ nhama ahorow a ɛsono emu biara, na ɛsono ne sẽ dodow wɔ nsateakwaa biara mu. Kɛkɛ a ɛne gauge no hyia asaawa no crests. Sɛ ɛfata yiye a, woahu wo nne . Saa anammɔn yi yɛ ade titiriw ma metric threads ne american thread types abien no nyinaa ..
Anamɔn 3: Asaawa no kɛse ne ne profile a wɔbɛkyerɛ .
Sɛnea ɛbɛyɛ na woahu asaawa no kɛse , susuw ne ntwemu titiriw —asaawa a ɛyɛ kɛse a ɛyɛ ɔbarima asaawa anaasɛ akyi ntwemu . asaawa a ɛyɛ ɔbea Fa caliper di dwuma pɛpɛɛpɛ. Afei, hwehwɛ asaawa no ho nsɛm mu . Eyi ka sẽ nsusuwii ne thread geometry . metric ISO thread ne SAE Unified threads are common thread types , a emu biara wɔ profile soronko.
Anamɔn 4: Asaawa no a wɔbɛkyerɛ sɛnea gyinapɛn ahorow te .
Awiei koraa no, kyerɛ asaawa no sɛnea nnwumayɛbea gyinapɛn ahorow kyerɛ no. Ɛho behia sɛ wuhu nominal size profile , pitch , ne sɛ ɛyɛ nsa nifa anaa benkum so asaawa . Gyinapɛn a wɔtaa de di dwuma no bi ne ISO Metric Thread , British Standard Whitworth Coarse , ne ɔman no mu asaawa a ɛyɛ mmerɛw a wɔaka abom . Bere nyinaa hwɛ nnwuma gyinapɛn ahorow no mu na ama pɛpɛɛpɛ . woakyerɛ asaawa no .
T hRead kɛse ho hia wɔ hwɛ a wɔbɛhwɛ ma asaawa a ɛfata a wɔde yɛ adwuma te sɛ hose fittings ne air compressor condensate filters . a ɛfata a wɔde hu ade no Asaawa yɛ ade titiriw a ɛma wotumi siesie nneɛma a wɔahyɛ ho nkɔm ne mfiridwuma ho ntetee wɔ nnwuma ahorow mu a wɔde wɔn ho to asaawa afã horow so ..
Afotu a mfaso wɔ so a ɛbɛma woapaw asaawa a ɛfata .
Sɛ worepaw nhama a wode bɛyɛ wo dwumadi no a, nneɛma ahorow bi ba asɛm no mu. Ɛho hia sɛ wosusuw application , material compatibility , ne industry standards ho . Nea ɛsɛ sɛ wode sie w’adwenem no mu abubu ni:
Nneɛma a ɛsɛ sɛ wususuw ho bere a worepaw nhama no .
1. Thread identification : Ɛho hia sɛ wobɛhu thread type no yie. Fa pitch gauge di dwuma fa kyerɛ asaawa no ano ne caliper a wode susuw diameter titiriw no ..
2. ahorow ahorow : Hu nhama ahorow a wɔtaa de di dwuma no . Sɛ ɛyɛ ISO Thread Types , American Thread Types , anaa British Whitworth asaawa a , emu biara wɔ ne di dwuma pɔtee.
3. Fluid-power industry : Sɛ wowɔ saa sector yi mu a, SAE Unified threads betumi ayɛ wo kɔ-to. Wɔayɛ no ama tebea horow a nhyɛso kɛse wom.
4. Thread Size Matters : Bere biara hwɛ hu sɛ thread size no ne no hyia fitting connection . Size a ɛnteɛ betumi ama leaks anaasɛ component damage aba.
5. Parallel Thread vs. Tapered Thread : Te nsonsonoe no ase. Nhama a ɛne ne ho di nsɛ no ma ne kɛse yɛ pɛ, bere a nhama a ɛyɛ teateaa no yɛ teateaa. Eyi ka nsɔano no ne sɛnea wɔkyerɛ asaawa no ..
6. Pitch diameter : Pitch diameter yɛ geometric parameter titiriw. Ɛyɛ cylinder a ɛyɛ mfonini a ɛwɔ adwene mu no wɔ baabi a kwan no ntam nhama yɛ pɛ.
Mfomso a ɛtaa ba sɛ wɔbɛkwati .
l Mismatching threads : Kwati sɛ wode ɔbarima nhama a ɛwɔ ɔbea nhama a ɛnteɛ bedi dwuma . Eyi betumi ayi nhama no afi hɔ anaasɛ ɛbɛma ayɛ nea ɛfata yiye.
l Nsa kwan a wobu ani gu so : Nhama a ɛwɔ nifa so no abu so kɛse, nanso wɔde nsa benkum di dwuma wɔ application ahorow bi mu. Mfa wɔn mfra mu.
l Obveraged Standards : Nnwumayɛbea gyinapɛn , te sɛ Unified Thread Standard anaa ISO metric thread , hwɛ hu sɛ ɛne ne ho hyia. Mmu n’ani ngu wɔn so.
l Aniwa a wobu ani gu so : Ɛsɛ sɛ nneɛma a ɛwɔ asaawa a wɔde kyekyere nneɛma no mu no ne afã horow a ɛka bom no hyia. Nneɛma a ɛne no nhyia no betumi asɛe anaasɛ asɛe.
l Forgetting thread identification tools : Nnwinnade te sɛ thread pitch gauge ho hia. Wɔboa ma wɔkwati mfomso wɔ thread identification mu ..
Kae sɛ, ɛnsɛ sɛ wɔfa asaawa a wɔde hu ade no adewa. Ɛyɛ fapem a ɛma nkitahodi a ɛyɛ adwuma a ahobammɔ wom na ɛyɛ adwuma. Sɛ nhwɛso no, wɔ nsu a wɔde yɛ adwuma mu no, sɛ wɔde asaawa a ɛnteɛ a ɛwɔ hose fittings anaa tube fittings so di dwuma a, ebetumi ama nsu a ɛretu a asiane wom aba.
Sɛ wopaw thread type a ɛfata nso a, ɛkyerɛ sɛ wobɛsusuw thread design no ho. Wɔ paipu nkitahodi ho no, National Taper Pipe (NPT) ne British Standard Pipe Taper (BSPT) yɛ asaawa ahorow a ɛho hia. Wɔde nhama a ɛyɛ tapered na ɛyɛ kɔntɔnkrɔn na ɛyɛ nsɔano a ɛyɛ den.
Nea ɛne eyi bɔ abira no, application ahorow a ɛhwehwɛ sɛ threads a ɛne ne ho di nsɛ no betumi de ISO metric thread anaa Unified National Coarse Thread (UNC) adi dwuma. Eyinom hwɛ hu sɛ akyi ntwemu a ɛkɔ so daa wɔ afã horow a wɔde asaawa ayɛ no so.
Nea etwa to no, mma wo werɛ mmfi nsiesie ne mfiridwuma ho ntetee a wɔde hyɛ nkɔm no. Sɛ wo ne Industrial IoT kɔ w’anim a, ebetumi aboa wo ma woapaw thread type a ɛfata na woakura mu yiye. Na bere a ebia ɛbɛyɛ te sɛ nea mframa compressor condensate filters no nni abusuabɔ no, wɔde wɔn ho to asaawa a wɔpaw no yiye so ma ɛyɛ adwuma yiye.
Awie
Yɛatu kwan afa threads wiase a ɛyɛ nwonwa no mu, ahwehwɛ nuances a ɛma type biara yɛ soronko no mu. Efi American Pipe Threads so kosi Metric ISO nhama so no, nhama ahorow no a wobɛte ase no nyɛ nhomasua ara kwa —ɛyɛ ade a mfaso wɔ so a ɛho hia. Wɔ nnwuma te sɛ fluid-power anaa manufacturing mu no, sɛ wunim wo SAE Unified threads a efi wo Britania Whitworth nhama mu a, ebetumi akyerɛ nsonsonoe a ɛda fit a ɛfata ne mfomso a ɛho ka yɛ den ntam.
Susuw eyi ho sɛ ɛyɛ adeyɛ: Fa wo thread identification skills no di dwuma na ama w’adwuma ayɛ kɛse. Sɛ́ ebia woreyɛ hose fittings anaasɛ worepaw paipu a ɛfata ama tube fittings no, kae sɛ asaawa kɛse ho hia. Sɛ wowɔ pitch gauge ne caliper wɔ wo nsam a, woasiesie wo ho sɛ wode ahotoso bɛkyerɛ asaawa no.
Wɔn a wɔwɔ afuom no, thread identification process no nnyɛ sɛ wobɛnya fitting connection a ɛfata no kɛkɛ; Ɛfa ahobammɔ ne ahoɔden a wɔbɛhwɛ so yiye ho. Nnwumayɛbea gyinapɛn ahorow wɔ hɔ a ɛkyerɛ yɛn kwan, ne nnwinnade te sɛ asaawa a wɔde kyerɛ nneɛma a wɔde kyerɛ wɔ saa gyinapɛn ahorow no so. Kae sɛ, nhama ahorow no nyɛ din ahorow a wɔahyehyɛ ara kwa —wɔyɛ wɔn ankasa kasa, kasa a ɛkasa kyerɛ asaawa biara a ɛfata no mudi mu kura.
Sɛ yɛde rewie a, asaawa ahorow a ɛho hia—asaawa a ɛne ne ho hyia, asaawa a ɛyɛ teateaa, ISO nhama ahorow, Amerika asaawa ahorow, ne Britaniafo asaawa a wɔde di dwuma daa—no yɛ nneɛma a wɔde di dwuma a wontumi nkan. Bere a mfiridwuma renya nkɔso wɔ mfiridwuma mu IoT ne nkɔmhyɛ nsiesie mu no, saa ara na ɛsɛ sɛ yɛn nimdeɛ a ɛfa asaawa nhyehyɛe ho no nso yɛ.
