Mphamvu zolimba za rabara
Kuyesa kwamphamvu kwa mphira wovunda
Chida chilichonse cha mphira chimagwiritsidwa ntchito pansi pa mphamvu zina zakunja, kotero pamafunika kuti mphira ukhale ndi zinthu zina zakuthupi komanso zamakina, ndipo magwiridwe antchito odziwika bwino ndikuchita mwamphamvu.Mukamayang'anira zinthu zomalizidwa, kupanga mawonekedwe a rabara, kudziwa momwe angagwiritsire ntchito, ndikuyerekeza kukana kukalamba kwa mphira ndi kukana kwapakatikati, nthawi zambiri ndikofunikira kuwunika momwe zimagwirira ntchito.Chifukwa chake, kuchita masewera olimbitsa thupi ndi chimodzi mwazinthu zofunika kwambiri za raba.
Kuchita kwamphamvu kumaphatikizapo zinthu zotsatirazi:
1. Kupsinjika kwamphamvu (S)
Kupsyinjika komwe kumapangidwa ndi chitsanzo panthawi yotambasula ndi chiŵerengero cha mphamvu yogwiritsidwa ntchito ku gawo loyamba la gawo lachitsanzo.
2. Kupsinjika kwakanthawi kochepa (Se)
Kupsinjika kwamphamvu komwe gawo logwira ntchito lachitsanzo limatambasulidwa mpaka kutalika kopatsidwa.Zovuta zodziwika bwino zimaphatikizapo 100%, 200%, 300%, ndi 500%.
3. Mphamvu yamphamvu (TS)
Kupsyinjika kwakukulu komwe chitsanzocho chimatambasulidwa kuti chisweke.Kale ankatchedwa kuti mphamvu yolimba komanso mphamvu yolimba.
4. Elongation peresenti (E)
Kusinthika kwa gawo logwira ntchito lomwe limayambitsidwa ndi fanizo lokhazikika ndi chiŵerengero cha kuwonjezereka kwa kutalika kwa chiwerengero choyambirira cha kutalika.
5. Kutalikira pa kupsinjika komwe kwapatsidwa (Mwachitsanzo)
The elongation wa chitsanzo pansi pa kupsinjika.
6. Kutalikira pa nthawi yopuma (Eb)
The elongation wa chitsanzo pa yopuma.
7. Kuphwanya kusinthika kosatha
Wonjezerani chitsanzocho mpaka chiphwanyike, ndikuchiyika pazitsulo zotsalira pambuyo pa nthawi inayake (mphindi 3) zakuchira mu ufulu wake.Mtengo ndi chiŵerengero cha kutalika kwa gawo logwira ntchito mpaka kutalika koyambirira.
8. Kuthamanga kwamphamvu panthawi yopuma (TSb)
Kupanikizika kwapang'onopang'ono kwa chitsanzo chokhazikika pa fracture.Ngati chitsanzocho chikupitiriza kukula pambuyo pa zokolola ndipo chikuphatikizidwa ndi kuchepa kwa kupsinjika maganizo, makhalidwe a TS ndi TSb ndi osiyana, ndipo mtengo wa TSb ndi wochepa kuposa TS.
9. Kupsinjika kwakanthawi pa zokolola (Sy)
Kupsinjika komwe kumayenderana ndi mfundo yoyamba pamayendedwe opsinjika komwe kupsinjika kumawonjezeka koma kupsinjika sikumawonjezeka.
10. Elongation at yield (Ey)
Kupsyinjika (elongation) yofanana ndi mfundo yoyamba pa piritsi la kupsyinjika komwe kupsyinjika kumawonjezeka koma kupanikizika sikuwonjezeka.
11. Mpira psinjika okhazikika mapindikidwe
Zinthu zina za mphira (monga zosindikizira) zimagwiritsidwa ntchito moponderezedwa, ndipo kukanidwa kwawo ndi chimodzi mwazinthu zazikulu zomwe zimakhudza mtundu wazinthu.Kukanikiza kukana kwa mphira nthawi zambiri kumayesedwa ndi kuponderezedwa kosatha.Labala ikakhala yopanikizidwa, imayamba kusintha thupi ndi mankhwala.Mphamvu yopondereza ikatha, zosinthazi zimalepheretsa mphira kubwereranso momwe idayambira, zomwe zimapangitsa kuti pakhale kupindika kosatha.Ukulu wa psinjika okhazikika mapindikidwe zimadalira kutentha ndi nthawi ya psinjika boma, komanso kutentha ndi nthawi imene kutalika kubwezeretsedwa.Pa kutentha, kusintha kwa mankhwala ndi chifukwa chachikulu cha psinjika okhazikika mapindikidwe a mphira.Kuponderezedwa kosatha kumayesedwa pambuyo pochotsa mphamvu yopondereza yomwe imagwiritsidwa ntchito pachitsanzo ndikubwezeretsa kutalika kwa kutentha kokhazikika.Pa kutentha kochepa, kusintha komwe kumachitika chifukwa cha kuuma kwa magalasi ndi crystallization ndizo zikuluzikulu zomwe zimayesedwa.Kutentha kukakwera, zotsatirazi zimatha, choncho m'pofunika kuyeza kutalika kwa chitsanzo pa kutentha kwa mayeso.
Pakali pano pali miyeso iwiri yapadziko lonse yoyezera kupindika kosatha kwa mphira ku China, ndiko kutsimikiza kwa kupindika kwanthawi zonse kutentha kwa firiji, kutentha kwambiri, kutentha pang'ono, mphira wopangidwa ndi vulcanized ndi mphira wa thermoplastic (GB/T7759) ndi njira yodziwira. kupindika kosalekeza kukanikizana kokhazikika kwa mphira wavulcanized (GB/T1683)
Nthawi yotumiza: Apr-01-2024
