Gwajin Tauri na Bututun Karfe na Carbon: Jagorar Ƙwararre

A ayyukan yau da kullum na injin niƙa ƙarfe ko wurin gini, gwajin tauri ya fi duba lokaci-lokaci - hanya ce mafi sauri don tabbatar da ko bututun ya dace da manufa. Ko kuna dubawaLSAW don layin matsin lamba mai yawa kosassan da ba su da ramiGa tsarin filin wasa, ƙimar taurin yana gaya muku daidai yadda aka yi wa ƙarfen magani da kuma yadda zai yi aiki a ƙarƙashin damuwa.

Ga gaskiyar fasaha game da yadda muke auna shi da kuma dalilin da ya sa yake da muhimmanci ga manufarka. 

Siffa ta 1.Gwajin tauri na bututun ƙarfe na carbon a dakin gwaje-gwajenmu.

Dalilin da Yasa Ba Za Mu Iya Yin Watsi da Taurin Kai Ba

Tauri ba wai kawai yana nufin juriyar saman ba ne; yana nufin "gajeren hanya" da ba zai lalata ba don fahimtar ruhin bututun.

Kimanta Ƙarfi:Akwai alaƙa kai tsaye, mai layi tsakanin tauri da ƙarfin tauri (Rm). A fagen, sau da yawa muna amfani da ƙa'idar babban yatsa Rm≈ 3.45× HB don samun kimanta ƙarfi cikin sauri ba tare da buƙatar cikakken gwajin tauri ba.

Kurakurai Kan Maganin Zafi:Idan an yi tsammanin za a daidaita rukunin ASTM A106 amma ya yi tsauri sosai, gwajin ya nuna cewa an rage yawan sanyaya ko kuma zafin wutar tanderun bai daidaita ba.

"Haɗin da Ya Fi Rauni" (Welds):A cikin bututun da aka haɗa kamar ERW ko SSAW, Yankin da Ya Shafi Zafi (HAZ) shine yankin haɗari. Idan wannan yanki ya yi tauri sosai, zai yi rauni. A cikin "sabis mai tsami" na mai da iskar gas, walda mai tauri sosai shine maganadisu na fashewar Hydrogen-Induced (HIC).

Manyan Uku: Wace Hanya Ya Kamata Ku Yi Amfani da Ita?

1. Brinell (HBW) – Mafi kyau ga Kayan Aiki Masu Yawa

Ga faranti na ƙarfe da ba a sarrafa su da kuma bututu masu kauri, Brinell shine ma'aunin zinare. Yana amfani da ƙwallon tungsten carbide mai girman milimita 10 da kuma babban kaya (har zuwa kilogiram 3000).

Me yasa yake aiki:Babban ɓangaren da aka yi amfani da shi yana daidaita tsarin ƙarfen, yana ba ku damar yin karatu mai yawa maimakon wani abu da ba a saba gani ba.

Tsarin:

2. Rockwell (HRB/HRC) – Sarkin Shirye-shirye

Idan kana buƙatar sakamako cikin daƙiƙa kaɗan akan layin girma mai girma, Rockwell shine amsar. Hanya ce ta karatu kai tsaye wacce ba ta buƙatar aunawa ta gani.

HRB:Ya dace da ƙarfe masu laushi kamar Q235.

HRC:Ana buƙatar ƙarfe masu ƙarfi (kamar API 5L X70) ko abubuwan da aka kashe.

3. Vickers (HV) – Mai Binciken Lab Precisionist

Vickers yana amfani da dala mai siffar lu'u-lu'u kuma yawanci ana ajiye shi ne don dakin gwaje-gwaje. Idan kuna buƙatar zana taswirar tauri a kan wani kunkuntar dinkin walda don nemo ainihin wurin da ƙarfen ya zama mai karyewa, Vickers shine kawai kayan aikin da ake buƙata don aikin.

Teburin Bayani: Taurin Al'ada ta Mataki

Duk da cewa takamaiman ƙimar MTR (Rahoton Gwaji na Mill) sun bambanta, ga ma'aunin da muke nema a cikin maki gama gari:

Shawara ta Musamman: Ga yanayin "sabis mai tsami" na H2S, ƙa'idodin NACE MR0175 suna iyakance taurin kai a kan ƙarfin da ke tattare da shi.22 HRC (kimanin 248 HV)don hana tsagewar dattin damuwa.

Gujewa "Bayanan da ba su da kyau": Dokokin Gwajin Fili

Domin samun sakamako wanda a zahiri ya dace da binciken, dole ne ku sarrafa masu canji:

1.Kashe Rufin:Ba za ka iya gwadawa babututun galvanizedta hanyar zinc. Zinc yana da laushi kuma zai ba ku ƙarancin ƙima. Dole ne ku niƙa saman har zuwa ƙarfe na asali.

2.Kalli Kauri:Idan bangonka siriri ne, "tasirin anvil" (taurin goyon bayan injin) zai zubar da jini a cikin sakamakon bincikenka. Dole ne bangon bututunka ya zama aƙalla kauri sau 10 fiye da zurfin shigarwar.

3.Yi la'akari da Tazara:Kada ku tara gwaje-gwajenku. Kowace bugu tana taurare ƙarfen da ke kewaye da shi. Ajiye wuraren gwajin ku aƙalla diamita 3 a gefe don samun karatu mai tsabta da zaman kansa.

Gwajin tauri shine babban kariyarka daga lalacewar kayan aiki. Ta hanyar zaɓar hanyar da ta dace—Brinell don ƙarfin girma, Rockwell don gudu, ko Vickers don nazarin walda na bincike—ka tabbatar da cewa bututun ƙarfen carbon ɗinka ya cika ƙa'idodin aminci na injiniyan zamani.