Ƙaƙwalwar faɗaɗa shine haɗin zaren na musamman wanda aka yi amfani dashi don gyara goyan bayan bututu / ɗagawa / sashi ko kayan aiki akan bango, bene ko ginshiƙi.A maki na carbon karfe kusoshi an raba zuwa 3.6,4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 da sauran fiye da 10. Lambobin kafin da kuma bayan decimal batu bi da bi nuna nominal tensile ƙarfi da yawan amfanin ƙasa rabo bi da bi. daga cikin abubuwan da aka saka, alal misali: alamar 8.8 bolts yana nuna cewa ƙarfin ƙarfin kayan ya kai 800MPa, kuma ƙarfin da ake samu shine 0.8, wato ƙarfinsa ya kai 800 × 0.8=640MPa.
Kayayyaki:
A maki na fadada kusoshi an raba zuwa 45, 50, 60, 70 da kuma 80. The abu ne yafi zuwa kashi austenite A1, A2, A4; Martensite da ferrite C1, C2, C4; Its wakilci, misali A2-70;"- ” kafin da kuma bayan yana nuna kayan aron ƙarfe da ƙarfin ƙarfin bi da bi. da sauran manyan kayan aikin injiniya na gami da ƙarfe. kayan abu da girman tsarin haɗin haɗin zaren.
iri:
A sa na bakin karfe kusoshi ne zuwa kashi 45, 50, 60, 70, 80, da kayan da aka yafi raba zuwa austenite A1, A2, A4, martensite da ferrite C1, C2, C4, ta magana Hanyar kamar A2-70. "ɗaya" kafin da kuma bayan bi da bi suna nuna ma'auni da ƙarfin ƙarfin.
ya ƙunshi: Ƙaƙwalwar faɗaɗa ta ƙunshi abin rufe fuska, bututun faɗaɗa, mai wanki, mai wanki na bazara, da kwaya mai hex.
Lokacin da ake amfani da shi, wajibi ne a yi rami na girman girman daidai a kan kafaffen jiki tare da rawar motsa jiki (guduma), sa'an nan kuma sanya kullun da bututun fadada a cikin rami, da kuma ƙarfafa goro don yin kullun, bututun fadadawa. , Sashe na shigarwa da kafaffen jiki yana faɗaɗa sosai zuwa ɗaya. Bayan ƙarfafawa zai faɗaɗa, wutsiya na bolt yana da babban kai, kullin waje ya saita ɗan ƙaramin girma fiye da diamita na bututu zagaye, ɓangaren wutsiya yana da buɗewa da yawa, lokacin da a datse wutsiya, za a kai jelar babban kai zuwa bututun bututun da ke ciki, bututun babba, don cimma manufar fadadawa, sannan a dage dambun a kasa ko bango, don cimma manufar rooting. .
Ajin aikin 4.6 fadada kusoshi, ma'ana: 1, Ƙarfin ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan abin faɗaɗawa ya kai matakin 400MPa; 2.Matsakaicin juzu'i na kayan haɓakawa na haɓakawa shine 0.6; 3, ƙarfin ƙimar ƙima na kayan haɓaka kayan haɓaka shine 400 × 0.6 = 240MPaMa'anar matakin wasan kwaikwayon na ƙarar faɗaɗa shine ma'auni na duniya, matakin aiki iri ɗaya na ƙarar faɗaɗa. , Ba tare da la'akari da bambancin kayan aiki da asali ba, aikinsa iri ɗaya ne, zane zai iya zaɓar matakin aikin kawai.
Abubuwan da ke buƙatar kulawa:
1, zurfin zurfafawa: zurfin ƙayyadaddun ginin yana da kyau fiye da tsayin bututun faɗaɗa game da 5 mm.Muddin ya fi girma ko daidai da tsayin bututun faɗaɗa, tsayin ƙwarƙwarar ƙwarƙwarar da ta rage a cikin ƙasa tana daidai da ko žasa da tsayin bututun faɗaɗa. a ƙasa, ba shakka, mafi wuya mafi kyau, kuma ya dogara da ƙarfin abin da kuke buƙatar gyarawa.Ƙarfin ƙarfin da aka sanya a cikin kankare (C13-15) ya ninka sau biyar a jikin bulo.3.Bayan shigar daidai da shigar M6/8/10/12 na ciki na faɗaɗa a cikin kankare, madaidaicin ƙarfinsa mafi kyau shine 120/170/320/510 kg bi da bi.Hanyar shigarwa na ƙuƙwalwar haɓakawa na ciki ba ta da wuyar gaske, takamaiman aikin shine kamar haka;Da farko zabar wani alloy drill bit tare da diamita guda ɗaya kamar zoben faɗaɗa (tube) na ƙirar haɓakawa, shigar da shi a kan rawar lantarki sannan kuma aiwatar da hakowar bango, zurfin rami ya fi daidai da tsayin ƙugiya. , sa'an nan kuma sanya kayan aikin haɓakawa zuwa rami, tuna;Kada ka dunƙule kashe dunƙule, don hana ramin hakowa ne in mun gwada da zurfi a lokacin da angwaye fadi a cikin rami da kuma ba da kyau a cire.Sa'an nan kuma dunƙule dunƙule dunƙule 2-3 dunƙule bayan ji na ciki fadada kullin ya matse amma ba sako-sako da sa'an nan kuma dunƙule kashe dunƙule dunƙule.
