Nhwɛsoɔ: 117 Ɔkyerɛwfoɔ: Site Editor Bere a wɔde tintimii: 2024-01-09 Mfiase: Beaeɛ
Sɛ ɛba wiase a ɛyɛ nwonwa a ɛfa hose ne tube fittings ho a, asaawa ahorow a ɛwɔ hɔ no betumi ayɛ nea ɛboro so koraa. Ɛte sɛ nea wugyina nkuruwankuruwa a ɛyɛ nkuruwankuruwa a emu biara wɔ ne nnyigyei ne emu dɔ soronko mu, na woresusuw ɔkwan bɛn na ɛkɔ baabi a ɛfata pɛpɛɛpɛ no ho. Wɔ saa asɛm yi mu no, m’ani agye sɛ mɛpae ahintasɛm a ɛwɔ saa nhama yi mu ama mo. Yɛde nnianim asɛm titiriw bi 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 ne nneɛma a wɔde di dwuma da biara da a wontumi nkan mu.
Wɔ saa akwantuo yi mu no, yɛbɛhwehwɛ nhama ahodoɔ titire, te sɛ BSPP, UN/UNF, ne metric parallel threads, na yɛakɔ wiase a tapered threads, a metric tapered, BSPT, ne NPT/NPTF threads ka ho. Eyinom a wobɛte ase no bɛboa wo ma woapaw nea ɛho ka sua na ɛfata sen biara, ahwɛ ahu sɛ wotumi de ho to so na esiw adwumayɛ a ɛnkɔ yiye ano wɔ wo nnwuma mu. Enti, momma yɛnhyɛ aseɛ wɔ saa thread adventure yi so na yɛnhunu deɛ ɛfata pɛpɛɛpɛ ma w’ahiadeɛ!
Sɛ yɛka nhama ho asɛm a, yɛreka helical structure a wɔde dannan wɔ rotational ne linear movement anaa force ntam. Nhama wɔ baabiara! Hwɛ nkɔnsɔnkɔnsɔn a ɛkura wo pon no mu, wo nsu toa no anoano, anaa kanea a ɛwɔ wo kanea mu mpo. Wɔn nyinaa de wɔn ho to nhama so na ama wɔatumi atra baabi na ayɛ adwuma yiye.
Asaawa yɛ abon a ɛkɔ so twitwiw biribi a ɛte sɛ kurukuruwa anaa ahinanan ho. Saa nhyehyɛe yi ma wotumi de afã horow no bom yiye. Fa no sɛ antweri a ɛyɛ nkuruwankuruwa bi abɔ odum bi ho —saa na asaawa bi te wɔ skru anaa bolt so.
Threads ho hia efisɛ wɔde di dwuma wɔ applications a enni ano a ɛka yɛn da biara da asetra mu. Wɔn ne abran a wɔwɔ sunsuma mu, a wɔhwɛ hu sɛ nneɛma rensɛe. Nea enti a ɛho hia kɛse ni:
l Nneɛma a Wɔkura Bom : Efi dan mu nneɛma so kosi mfiri so no, wɔde nhama di dwuma wɔ nhama a wɔde kyekyere nneɛma te sɛ nkɔnsɔnkɔnsɔn ne nkɔnsɔnkɔnsɔn mu na ama nneɛma no akɔ so abata wɔn ho wɔn ho yiye.
l Fluid Control : In the fluid-power industry , nhama hwɛ hu sɛ paipu ne tube fittings no rentu, a ɛho hia ma nhyehyɛe ahorow a ɛde nsu, ngo, anaa gas kɔ.
l Pɛpɛɛpɛ wɔ Mfiri mu : Wɔ mfiri a ɛyɛ pɛpɛɛpɛ kɛse, te sɛ aduruyɛ mfiri mu no, sɛnea asaawa no kɛse yɛ pɛpɛɛpɛ no ho hia na ama wɔahwɛ ahu sɛ ɛyɛ adwuma yiye na ahobammɔ wom.
Nhama pii wɔ hɔ ahorow , na emu biara wɔ n’ankasa dwumadie ne ne su pɔtee. Kakraa bi ni:
l Amerika Pipe Threads : Wɔde eyinom di dwuma wɔ Amerika Atifi fam de siw paipu nkitahodi ahorow 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.
Sɛ wopɛ sɛ wokyerɛ asaawa no a , ɛho behia sɛ wuhu susudua atitiriw kakraa bi:
l Major Diameter : Ɛyɛ akyi ntwemu kɛse sen biara no ɔbarima asaawa .
l Minor Diameter : Ne ntwemu ketewaa bi, a wohu wɔ asaawa no ase.
l Pitch Diameter : Eyi ne cylinder a wɔde wɔn adwene bu a ɛfa asaawa atifi a ɛyɛ ɔbarima asaawa ne asaawa a ɛyɛ ɔbea asaawa a ɛwɔ asaawa mu no ntwemu.
Asaawa a wɔde hu no betumi ayɛ anifere, nanso nnwinnade te sɛ afiri a wɔde kyerɛ ɛnne nnyigyei betumi aboa. Saa adwinnade yi susuw asaawa no kɛse , a ɛyɛ kwan a efi biako asaawa no atifi kɔ foforo so wɔ axial plane mu.
Geometric parameters a ɛwɔ thread bi mu no kyerɛkyerɛ n’ahoɔden ne n’adwuma mu. Nneɛma a ɛwɔ asaawa no mu te sɛ ɛse no anim ne asaawa no kɛse na ɛkyerɛ sɛnea asaawa no bɛkura mu yiye ne ahoɔden dodow a ebetumi agyina ano. Sɛ nhwɛso no, skru a ɛwɔ nhama abien bɛkɔ n’anim ntɛmntɛm sen skru a ɛwɔ nhama biako mmɔho abien wɔ bere biara a ɛkyinkyini no mu, na ɛbɛma wɔanya mfiridwuma mu mfaso.
l Parallel thread ne tapered thread yɛ akuo titire mmienu. Nhama a ɛne ne ho di nsɛ no ma ne kɛse yɛ pɛ wɔ ne nyinaa mu, bere a nhama a ɛyɛ teateaa no twetwe teateaa, na ɛboa ma wɔyɛ nsɔano a ɛyɛ den.
l Nsa Nifa Nhama na ɛtaa ba, baabi a sɛ wodan kɔ dɔn no kwan so a, ɛma asaawa no mu yɛ den. Benkum-Nsa Nhama ntaa ntaa na ɛyɛ den wɔ ɔkwan a ɛne no bɔ abira so.
ntease Nhama ne ne geometric parameters ho hia efisɛ ɛyɛ adansi nneɛma pii a atwa yɛn ho ahyia. Efi abofra agode asinasin a wɔkyekyere bom so kosi wimhyɛn ahobammɔ a wɔhwɛ so no, nhama di dwuma titiriw wɔ yɛn wiase yi mu. Bere a yɛrehwehwɛ asaawa a wɔyɛ no pɔtee mu no , kae sɛ saa nkuruwankuruwa nketenkete yi yɛ kɛse wɔ hia a ɛho hia no mu.
When discussing thread types , ɛho hia sɛ yɛte wɔn dwumadi atitiriw ase.
nhama a wɔde si so di dwuma de kyekyere nneɛma a ɛwom no bom. Wɔtaa de Susuw nkɔnsɔnkɔnsɔn a ɛwɔ kɔmputa kotoku mu no ho hwɛ; wɔayɛ no sɛnea ɛbɛyɛ a wobetumi akura afã horow no mu.
transmission threads , yɛ ade titiriw wɔ nhyehyɛe ahorow a ɛde ahoɔden kɔ mu no mu. Nanso Wohu saa nhama yi wɔ mfiri ahorow mu nkɔnsɔnkɔnsɔn a wɔde kɔbere ayɛ mu, baabi a wɔn geometry ma wotumi dannan kankyee a ɛkyinkyini no kɔ kankyee a ɛyɛ tẽẽ mu.
Transport threads yɛ soronko kakra. Wodi dwuma titiriw wɔ nsu a wɔde yɛ adwuma no mu . Wɔayɛ saa nhama yi sɛnea ɛbɛyɛ a ɛbɛsɔ nsɔano wɔ paipu ne tube fittings mu , na ama wɔahwɛ ahu sɛ wɔde nsu anaa mframa bɛkɔ baabiara a ahobammɔ wom na etu mpɔn. Wɔayɛ thread type biara ama n’atirimpɔw pɔtee, na thread identification ho hia kɛse wɔ application ahorow mu de ahwɛ ahu sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Wobetumi akyekyɛ nhama mu sɛ Nsa Nifa (RH) nhama anaa Benkum (LH) nhama . Nsonsonoe no yɛ mmerɛw nanso ɛho hia. RH nhama no mu yɛ den wɔ dɔn no kwan so, na ɛno ne akwankyerɛ a wɔtaa de fa nhama a wɔde kyekyere nhama dodow no ara ho . Ɛkame ayɛ sɛ skru anaa bolt biara a ɛtaa ba a wubehyia no benya RH asaawa. LH nhama , , ɛyɛ den sɛnea ɛne dɔn no bɔ abira na ɛntaa nsi. Nanso Wɔde di dwuma wɔ tebea horow a tumi a ɛkyinkyini no betumi ama RH asaawa bi ayɛ mmerɛw mu, te sɛ sakre nan benkum so.
l Nsa Nifa Nhama :
¡ Twe den sɛnea dɔn no kyerɛ
¡ dodow no ara Screw thread a wɔde di dwuma
l Benkum-Nsa Nhama :
¡ Twe den wɔ ɔkwan a ɛne dɔn no bɔ abira so
¡ Nneɛma titiriw a wɔde di dwuma de siw nea ɛbɛsan ayɛ mmerɛw ano
Pipe nhama wɔ ahorow atitiriw abien: nhama a ɛyɛ teateaa ne asaawa a ɛne ne ho di nsɛ Wɔayɛ . nhama a ɛyɛ teateaa , te sɛ National Taper Pipe (NPT) , sɛnea ɛbɛyɛ a nhama no ankasa bɛyɛ nsɔano. Bere a wɔkyekyere ɔbarima ne ɔbea nhama no mu den no, ɛyɛ nsɔano esiane interference fit no nti. Eyi ma wɔyɛ nea eye ma dwumadie a ɛfa mframa anaa nsuo a ɛwɔ nhyɛsoɔ ase ho.
Nhama a ɛne ne ho di nsɛ , te sɛ British Standard Pipe Parallel (BSPP) , hia ade a ɛkata so, te sɛ washer anaa O-ring, na ama wɔahwɛ ahu sɛ nsu ntumi nkɔ 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.
l Nhama a Ɛyɛ Tapered : .
¡ Ɔman Taper Pipe (NPT) .
Sealing a wonya denam asaawa a ɛtwetwe adwene so
Wɔde di dwuma wɔ nhyehyɛe ahorow a nhyɛso kɛse wom mu
l Nhama a ɛne ne ho di nsɛ : .
¡ Britaniafo gyinapɛn Pipe Parallel (BSPP) .
Ɛhwehwɛ sɛ wɔde nneɛma foforo a wɔde hyɛ mu
Ɛfata ma mpɛn pii a wɔboaboa ano / disassembly
T hread kɛseɛ ho hia na ɛho hia sɛ wobɛkyerɛ thread type no yie de ahwɛ sɛ nkitahodiɛ no yɛ pɛpɛɛpɛ. Sɛ́ ebia wo ne American Pipe Threads , SAE Unified Threads , anaa Metric ISO thread , reyɛ adwuma no, a ɛfata thread identification nhyehyɛe no ho hia yiye. Nnwinnade te sɛ pitch gauge ne caliper betumi aboa wɔ saa adeyɛ yi mu, adi nnwuma gyinapɛn ahorow a ɛfa nominal size profile ho na wɔahwɛ ahu sɛ thread design a ɛfata ma application no.
ISO metric thread, a wɔtaa frɛ no M , yɛ amansan thread type . Wɔde di dwuma wɔ wiase nyinaa, ɛyɛ standardized thread ma atirimpɔw ahorow nyinaa. Pitch diameter ne major diameter yɛ nneɛma atitiriw a ɛwɔ saa thread type yi mu . Metric threads agye din esiane sɛ ɛyɛ mmerɛw na ɛnyɛ den sɛ wobehu thread no nti.
Nnwuma a wɔde di dwuma no bi ne: - Mfiri - Kar adwumayɛ - Nneɛma a wɔde di dwuma
Metric nhama ma ahoɔden ne nea wotumi de yɛ nneɛma pii kari pɛ, na ɛma ɛyɛ nhama ahorow a ɛho hia wɔ nneɛma a wɔyɛ mu no mu biako.
ISO metric fine thread anaa MF yɛ soronko wɔ standard M thread no ho wɔ ne nne mu . no Ɛnne yɛ fɛ, a ɛkyerɛ sɛ nhama no bɛn wɔn ho wɔn ho kɛse. Eyi ma nhama dodow a ɛkɔ soro wɔ unit tenten biara mu. no Asaawa pa ma wotumi di nhyɛso so yiye na eye ma dwumadie a ɛho hia sɛ wɔyɛ no pɛpɛɛpɛ a ɛkorɔn.
Nsonsonoeɛ titire bi ne: - ketewaa Ɛnne nnyigyei - Asaawa kɛseɛ a ɛyɛ den - Ahoɔden kɛseɛ wɔ ntokuru a wɔabɔ tap mu
metric fine threads di dwuma wɔ Wɔtaa de fluid-power adwumayɛbea ne nneɛma a ɛhwehwɛ sɛ wɔyɛ nsakrae a ɛyɛ fɛ mu.
Dade a wɔde fa nsu mu asaawa , a wɔfrɛ no Pg , no wɔ abakɔsɛm mu ntease. Efi Germany na wɔde dii dwuma kɛse wɔ Europa nyinaa de yɛɛ anyinam ahoɔden nhama a wɔde hyɛ mu. Ɛnnɛ, Pg nhama wɔ dwumadie pɔtee bi wɔ anyinam ahoɔden adwumayɛ mu, na ɛhwɛ ma nkitahodiɛ a ahobanbɔ ne ahotosoɔ wɔ.
Mprempren dwumadie no fa: - Electrical fittings - Conduit systems - Instrumentation
Ɛmfa ho sɛ a ɛkɔ soro no ahorow nhama Pg , da so ara yɛ nea ɛfata esiane nnwuma gyinapɛn ne agyapade nhyehyɛe ahorow nti.
Trapezoidal thread , a wɔafrɛ no Tr , no yɛ nea ɛda adi wɔ ne sẽ a ɛte sɛ trapezoidal no mu. Saa nhyehyɛe yi ma wonya mfiridwuma mu mfaso a ɛyɛ den , na ɛma ɛfata ma nnesoa a emu yɛ duru ne kɔbere nkɔnsɔnkɔnsɔn wɔ mfiri mu.
Dwumadie no bi ne: - Tumi a wɔde kɔ - Kankyee nsakraeɛ firi rotational kɔ linear - Fa di dwuma wɔ vises ne jacks mu
Trapezoidal thread yɛ thread type a wɔtaa de di dwuma wɔ drive systems a wɔyɛ mu. Ne geometry ma wotumi kyekyɛ nnesoa wɔ beae kɛse, na ɛma asaawa no kyɛ na ɛtra hɔ kyɛ.
Wɔ ɔfa yi nyinaa mu no, yɛaka ISO nhama ahorow te sɛ metric ISO nhama , ISO metric fine thread , ne afoforo. Ɛho hia sɛ wobɛkyerɛ asaawa no yiye ama dwumadie a wopɛ sɛ woyɛ no, ɛfiri sɛ asaawa no kɛseɛ ho hia . Nnwinnade te sɛ pitch gauge ne caliper som bo kɛse ma thread identification process , hwɛ hu sɛ ɛne ne ho hyia na ɛyɛ adwuma wɔ threaded afã horow.
Sɛ yɛka Amerika nhama ahorow ho asɛm a , Unified National Coarse Thread anaa UNC yɛ no mu biako nhama ahorow a ɛho hia . Ɛyɛ gyinapɛn a ɛkyerɛkyerɛ helical nhyehyɛe a wɔde yɛ asaawa a wɔde kyekyere nneɛma ho . nne . Wonim UNC sɛ ne 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 mma ɛnyɛ den sɛ ɛbɛtwa thread na ɛnyɛ den sɛ wobedi ho dwuma.
Ɔkwan foforo so no, Unified National Fine Thread anaa UNF no wɔ ɛnne nnyigyei a ɛyɛ ketewaa bi . Eyi kyerɛ sɛ nhama no bɛn wɔn ho wɔn ho kɛse. Wɔtaa de no UNF di dwuma bere a ɛho hia sɛ wɔde ahoɔden ne pɛpɛɛpɛyɛ a ɛkorɔn di dwuma no. Ɛtaa ba wɔ nsu-ahoɔden adwumayɛ mu efisɛ nhama a ɛyɛ fɛ no ma ɛyɛ nea ahobammɔ wom na ɛyɛ den. Ɛho hia sɛ wobɛkyerɛ thread no yie berɛ a wo ne UNF reyɛ adwuma de ahwɛ sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Unified National Special Thread anaa UNS yɛ foforo Amerika asaawa a ɛda nsow esiane sɛnea wɔayɛ no sɛnea wɔpɛ nti. UNS nyɛ gyinapɛn te sɛ UNC anaa UNF , na ɛma kwan ma nsakrae ba asaawa no nne ne ne kɛse mu. Saa nsakraeɛ yi ma UNS yɛ kɔ-kɔ ma dwumadie titire a ɛwɔ baabi a standard thread sizes nnɔɔso. Thread identification ma UNS hwehwɛ sɛ wosusuw pɛpɛɛpɛ, mpɛn pii no wɔde pitch gauge anaa caliper di dwuma.
| Dash Size (Nominal Size) | Thread Pitch | Ɔbarima Thread OD mm | Ɔbarima Thread OD inches | Ɔbea Thread ID mm | Ɔbea Thread ID inches |
|---|---|---|---|---|---|
| -02 (1/8) na ɛyɛ. | 27 | 10.3 | 0.41 | 9.4 | 0.37 |
| -04 (1/4) na ɛyɛ. | 18 | 13.7 | 0.54 | 12.4 | 0.49 |
| -06 (3/8) na ɛyɛ. | 18 | 17.3 | 0.68 | 15.7 | 0.62 |
| -08 (1/2) na ɛwɔ hɔ. | 14 | 21.3 | 0.84 | 19.3 | 0.76 |
| -10 (5/8) na ɛyɛ. | 14 | 22.9 | 0.90 | 21.1 | 0.83 |
| -12 (3/4) na ɛwɔ hɔ. | 14 | 26.9 | 1.06 | 24.9 | 0.98 |
| -16 (1) . | 111⁄2 na ɛyɛ | 33.3 | 1.31 | 31.5 | 1.24 |
| -20 (1 1⁄4) . | 111⁄2 na ɛyɛ | 42.2 | 1.66 | 40.1 | 1.58 |
| -24 (1 1⁄2) . | 111⁄2 na ɛyɛ | 48.3 | 1.90 | 46.2 | 1.82 |
| -32 (2) . | 111⁄2 na ɛyɛ | 60.4 | 2.38 | 57.9 | 2.29 |
**OD = Abɔnten Ntrɛwmu ID = Mfinimfini Ntrɛwmu
Sɛ yɛkɔ Amerika Pipe Threads , Ɔman Taper Pipe Threads no ho hia yiye. Ahorow atitiriw abien na ɛwɔ hɔ: NPT ne NPTF . Wɔn baanu nyinaa yɛ tapered thread types a ɛkyerɛ sɛ wɔyɛ nsɔano bere a wɔkyekyere wɔn denneennen no. NPT , anaa National Taper Pipe , abu so na ɛhwehwɛ sɛ wɔde nneɛma foforo kata so. NPTF , anaa National Taper Pipe Dryseal , sɛnea ɛbɛyɛ a ɛbɛyɛ nsɔano a ɛyɛ den a wɔmfa nneɛma foforo a wɔde bɛkata so. Wɔayɛ NPT ne NPTF ho hia wɔ nsu-tumi adwumayɛ mu ma hose fittings , tube fittings , ne pipe nkitahodi. Thread pitch gauge yɛ adwinnade a ɛho hia ma thread identification nhyehyɛe wɔ NPT ne NPTF nhyehyɛe nyinaa mu.
yi ntease Amerikafo nhama ahorow yɛ ade titiriw ma adwumayɛfo a wɔwɔ nnwuma pii mu. SAE Unified Threads a ka ho UNC , UNF ne UNS ne NPT ne NPTF di dwuma titiriw wɔ nhama a wɔde kyekyere nneɛma ne nkitahodi a wɔde hyɛ mu a wɔyɛ mu . a ɛfata Thread identification hwɛ hu sɛ components no hyɛ yiye na ɛyɛ adwuma sɛnea wɔahyɛ da ayɛ no.
Britania Standard Whitworth Coarse (BSW) , a wɔtaa frɛ no WW ma Whitworth no yɛ asaawa ho nsɛm a ɛwɔ abakɔsɛm a ɛyɛ anigye. Ɛyɛ wiase no mu asaawa a wɔde skru ayɛ a edi kan a wɔahyɛ da ayɛ , a na ɔyɛɛ no Joseph Whitworth wɔ 1841. Nsusuwii no yɛɛ nsakrae kɛse, na ɛde gyinapɛn bi sii hɔ maa nhama a wɔde kyekyere nneɛma 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 asaawa no anim a ɛyɛ digrii 55 ne ne ntini ne ntini a ɛyɛ kurukuruwa. Saa abakɔsɛm mu nhama nhyehyɛe yi na ɛtoo fapem maa nhama ahorow pii a abu so a yehu nnɛ.
Sɛ yɛkɔ British Standard Fine (BSF) , saa asaawa su yi titiriw yɛ BSW no fã a ɛyɛ fɛ. Esiane sɛ na ketewaa bi ɛnne nnyigyei a ɛyɛ kwan a ɛda nhama a ɛbɛn ho ntam nti , wɔyɛɛ BSF sɛnea ɛbɛyɛ a ɛbɛma wɔanya pɛpɛɛpɛyɛ ne ahoɔden a ɛkorɔn wɔ dwumadie a asaawa kɛseɛ ho hia mu . no Diameter titiriw da so ara te sɛ BSW, nanso ɛnne a ɛyɛ fɛ no ma kwan ma wɔde nhama pii ba nsateakwaa biara mu, na ɛno kyerɛ sɛ ɛyɛ den na ɛyɛ den. BSF di dwuma wɔ kar adwumayɛ mu, baabi a pɛpɛɛpɛyɛ yɛ ade titiriw. Wɔtaa de
| Dash Size (Nominal Size) | Thread Pitch | Ɔbarima Asaawa OD mm | Ɔbarima Asaawa OD nsateakwaa | Ɔbea Asaawa ID mm | Ɔbea Asaawa ID nsateakwaa |
|---|---|---|---|---|---|
| -02 (1/8) na ɛyɛ. | 28 | 9.7 | 0.38 | 8.9 | 0.35 |
| -04 (1/4) na ɛyɛ. | 19 | 13.2 | 0.52 | 11.9 | 0.47 |
| -06 (3/8) na ɛyɛ. | 19 | 16.5 | 0.65 | 15.2 | 0.60 |
| -08 (1/2) na ɛwɔ hɔ. | 14 | 20.8 | 0.82 | 19.1 | 0.75 |
| -10 (5/8) na ɛyɛ. | 14 | 22.4 | 0.88 | 20.3 | 0.80 |
| -12 (3/4) na ɛwɔ hɔ. | 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 bi a ɛne ne ho di nsɛ asaawa a wɔtaa de di dwuma wɔ nsu-ahoɔden adwumayɛ mu . Nea ɛnte sɛ taper nhama no, BSP nhama no kura ne kɛse koro fi awiei kosi 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 wɔde nsɔano a ɛkɔ so daa . Wɔtaa de BSP toto American Pipe Threads ho , nanso wontumi nsesa esiane nsonsonoe a ɛwɔ nhama no su ne ɛnne nnyigyei mu nti.
| BSP Asaawa Kɛse | Abɔnten Ntrɛwmu | TPI |
|---|---|---|
| 1/16 Inch BSP na ɛwɔ hɔ | 7.7 mm / 0.304′′ na ɛwɔ hɔ. | 28 |
| 1/8 Inch BSP na ɛyɛ | 9.7 mm / 0.383′′. | 28 |
| 1/4 Inch BSP na ɛyɛ | 13.16 mm / 0.518′′ | 19 |
| 3/8 Inch BSP na ɛwɔ hɔ | 16.66 mm / 0.656′′ | 19 |
| 1/2 Inch BSP na ɛyɛ | 20.99 mm / 0.825′′ | 14 |
| 5/8 Inch BSP na ɛwɔ hɔ | 22.99 mm / 0.902′′ | 14 |
| 3/4 Inch BSP na ɛyɛ | 26.44 mm / 1.041′′ . | 14 |
| 7/8 Inch BSP na ɛyɛ | 30.20 mm / 1.189′′ | 14 |
| 1 Inch BSP na ɛwɔ hɔ | 33.25 mm / 1.309′′ | 11 |
| 1-1/4 Inch BSP a ɛyɛ nsateakwaa | 41.91 mm / 1.650′′ | 11 |
| 1-1/2 Inch BSP a ɛyɛ nsateakwaa | 47.80 mm / 1.882′′ | 11 |
| 2 Inch BSP a ɛyɛ nsateakwaa | 59.61 mm / 2.347′′ | 11 |
| 2-1/4 Inch BSP a ɛyɛ nsateakwaa | 65.71 mm / 2.587′′ | 11 |
| 2-1/2 Inch BSP a ɛyɛ nsateakwaa | 75.18 mm / 2.96′′ | 11 |
| 3 Inch BSP a ɛyɛ nsateakwaa | 87.88 mm / 3.46′′ | 11 |
| 4 Inch BSP a ɛyɛ nsateakwaa | 113.03 mm / 4.45′′ na ɛwɔ hɔ. | 11 |
| 5 Inch BSP a ɛyɛ nsateakwaa | 138.43 mm / 5.45′′ ne ne kɛse. | 11 |
| 6 Inch BSP a ɛyɛ nsateakwaa | 163.83 mm / 6.45′′ | 11 |
Nea etwa to no, British 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 ma nsɔano ba denam asaawa nhama a ɛhyɛ a ɛyɛ ɔbarima no ma ɛkɔ ɔbea asaawa no mu so , na ɛma ɛyɛ nea nsu ntumi nkɔ mu. BSPT abu so titiriw wɔ nsu-ahoɔden adwumayɛbea , baabi a sɛ wosiw nsu a ɛtwetwe ano no ano. ɛho hia The tapered angle hwɛ hu sɛ asaawa biara tighens kɔ nea edi hɔ no, ma ahotoso nkitahodi ma pipe , tube , ne fitting nkitahodi.
Wɔ yi mu biara mu no, Britania Whitworth nhama , nhama a wobehu no ho hia. nnwinnade te sɛ pitch gauge anaa caliper di dwuma de Wɔtaa de kyerɛ asaawa no su ne ne kɛse. Nteaseɛ a ɛfa geometric parameters a ɛwɔ saa nhama yi mu, fi major diameter so kɔsi pitch diameter , ho hia na ama wɔahwɛ ahu sɛ ɛne nhama no hyia na ɛyɛ adwuma wɔ threaded assemblies mu. Sɛ́ ɛyɛ abakɔsɛm mu mfiri anaa nnɛyi dwumadie mu no, Britania Standard Threads da so ara yɛ ade titire wɔ nnwuma ahodoɔ mu, egyina nhama ahodoɔ foforɔ a ɛho hia te sɛ ISO thread ahodoɔ , Metric ISO thread , ne Amerika thread ahodoɔ nkyɛn.
Nhama a wɔde fa nsu mu no yɛ ade titiriw a ɛma wɔhwɛ hu sɛ wɔde nkitahodi a ɛmma nsu nkɔ mu wɔ nsu ho nhama ne gas a wɔde si hɔ no mu. Wɔyɛ ade titiriw a ɛma wɔde paipu, valve, ne nneɛma a wɔde hyɛ mu bom yiye. Thread kɛseɛ ho hia wɔ saa dwumadie yi mu, ɛfiri sɛ ɛsɛ sɛ ɛdi nsuo a ɛsen ne nhyɛsoɔ a wɔhwehwɛ wɔ nhyehyɛeɛ no mu no ho dwuma.
Sɛ yɛka paipu nhama ho asɛm a , yɛtaa ka ahorow abien ho asɛm: nhama a ɛyɛ teateaa ne nhama a ɛyɛ kɔntɔnkrɔn . Asaawa a ɛyɛ teateaa , a wɔsan frɛ no National Taper Pipe (NPT) , no kɛse so tew nkakrankakra fi n’awiei biako, na ɛma nsɔano a emu yɛ den bere a nhama no hyɛ mu no. Nhama a ɛte sɛ kɔndua no te sɛ nea ɛte sɛ kɔne kakra, na ɛde ahoɔden foforo ka nkitahodi no ho.
paipu nhama a ɛyɛ teateaa di dwuma wɔ Wɔtaa de nsu a wɔde yɛ adwuma mu . Wɔnam nhama a ɛde ne ho hyɛ mu no so na ɛyɛ nsɔano. Pipe dope anaa Teflon tape taa yɛ adwuma sɛ nneɛma a wɔde siw ano de hwɛ hu sɛ nkitahodi a enni nsu mu.
Nea ɛne eyi bɔ abira no, nhama a wɔde paipu a ɛte sɛ conical no ntaa mma nanso ɛda so ara ho hia. Wɔtaa hu wɔ mmeae pɔtee bi a nhyɛso ne mfiri ahoɔden a wɔhwehwɛ no dɔɔso.
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.
Pitch ntwemu no asaa asaawa yɛ susudua a ɛho hia. Ɛyɛ diameter a ɛwɔ no mu imaginary cylinder 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. asaawa a ɛyɛ mmarima wɔ nsu afiri anaa nneɛma a wɔde hyɛ mu akyi, bere a Wohu 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.
l bere nyinaa fa pitch gauge di dwuma de si asaa no ano ne ne ntwemu so dua ..
l Hwɛ sɛ wɔde aduru a wɔde asɔ a ɛyɛ teateaa no ano a ɛfata . 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 thread identification process a ɛfata no di dwuma 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.
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.
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 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 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 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.
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.
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 no Aduruyɛbea 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 wonim 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. 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.
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.
Ne ntwemu titiriw no kyerɛ ade kɛse a ɛyɛ kɛse a ɛwɔ screw thread mu . Ɛyɛ akyi ntwemu a ɛyɛ ɔbarima de asaawa anaasɛ asaawa a ɛyɛ ɔbea kɛse no . Nea ɛne no bɔ abira no, ne ntwemu ketewaa no yɛ asaawa no ntwemu ketewaa koraa. Ɛyɛ cylinder a wɔayɛ ho mfonini wɔ adwene mu no ntwemu na ɛka asaawa no atifi kɛkɛ 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 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 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
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 ..
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.
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 ..
Asaawa yɛ bi mu nnyigyei ntam kwan . Sɛnea ɛbɛyɛ na woasusuw eyi no, wode ne crests 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 ..
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.
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 so . asaawa afã horow .
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:
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 fitting connection no hyia . 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.
l Mismatching threads : Kwati sɛ wode ɔbarima nhama a ɛwɔ a ɛnteɛ bedi dwuma ɔbea nhama . 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.
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.
