GB/T5310-2017 Bututu mara nauyi don tukunyar jirgi mai ƙarfi
Aikace-aikace
Yafi amfani da high matsa lamba da kuma high zafin jiki sabis na tukunyar jirgi (Superheater tube, reheater tube, iska jagora tube, babban tururi tube ga high da matsananci high matsa lamba boilers). Karkashin aikin iskar gas mai zafi mai zafi da tururin ruwa, bututun zai oxidize kuma ya lalata. Ana buƙatar cewa bututun ƙarfe yana da tsayi mai tsayi, babban juriya ga oxidation da lalata, da kwanciyar hankali mai kyau.
Babban Daraja
Grade na high quality-carbon tsarin karfe: 20g, 20mng, 25mng
Grade na gami tsarin karfe: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, da dai sauransu
A cikin ma'auni daban-daban akwai Grade daban-daban
GB5310: 20G = EN10216 P235GH
| Kayan abu | C | Si | Mn | P | S | Cr | MO | NI | Al | Cu | Ti | V |
| P235 GH | ≤0.16 | ≤0.35 | ≤1.20 | ≤0.025 | ≤0.025 | ≤0.3 | ≤0.08 | ≤0.3 | ≤0.02 | ≤0.3 | ≤0.04 | ≤0.02 |
| 20G | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.03 | ≤0.03 | - | - | - | - | - | - | - |
| Kayan abu | Ƙarfin Ƙarfi | yawa | Tsawaita |
| 20G | 410-550 | ≥245 | ≥24 |
| P235 GH | 320-440 | 215-235 | 27 |
| 360-500 | 25 |
| Kayan abu | Gwaji | ||||||
| 20G: | Kwantawa | Na'ura mai aiki da karfin ruwa | Gwajin Tasiri | NDT | Eddy | Girman Grazin | Tsarin microscopic |
| P235 GH | Kwantawa | Na'ura mai aiki da karfin ruwa | Gwajin Tasiri | NDT | Electromagnetic | Drift yana faɗaɗawa | Lek matsi |
Hakuri
Kaurin bango da Diamita na Waje:
Idan babu buƙatu na musamman, bututu zai zama isarwa azaman diamita na waje na al'ada da kaurin bango na al'ada. Kamar yadda takardar ta biyo baya
| Nadi nadi | Hanyar samarwa | Girman bututu | Hakuri | |||
| Matsayi na al'ada | Babban daraja | |||||
| WH | Hot Rolled (extrude) bututu | Diamita na waje na al'ada (D) ba | <57 | 0.40 | ± 0,30 | |
| 57 ~ 325 | SW35 | ± 0.75% D | ± 0.5% D | |||
| S>35 | ± 1% D | ± 0.75% D | ||||
| > 325 ~ 6. | + 1% D ko + 5. Dauki ƙaramin 一2 | |||||
| >600 | + 1% D ko + 7, Dauki ƙarami ɗaya 一2 | |||||
| Kaurin bango na al'ada (S) | <4.0 | ±|・丨） | ± 0.35 | |||
| > 4.0-20 | + 12.5% S | ± 10% S | ||||
| >20 | DV219 | ± 10% S | ± 7.5% S | |||
| 心219 | + 12.5% S -10% S | 土10% S | ||||
| WH | Thermal fadada bututu | Diamita na waje na al'ada (D) | duka | ± 1% D | ± 0.75% |
| Kaurin bango na al'ada (S) | duka | + 20% S -10% S | + 15% S -io%s | ||
| WC | Zane mai sanyi (birgima) Ppipe | Diamita na waje na al'ada (D) | <25.4 | ±'L1j | - |
| > 25.4 〜 4 () | ± 0.20 | ||||
| > 40 ~ 50 | |: 0.25 | - | |||
| > 50 ~ 60 | ± 0.30 | ||||
| >60 | ± 0.5% D | ||||
| Kaurin bango na al'ada (S) | <3.0 | ± 0.3 | ± 0.2 | ||
| > 3.0 | S | ± 7.5% S |
Tsawon:
A saba tsawon karfe bututu ne 4 000 mm ~ 12 000 mm. Bayan shawarwari tsakanin mai sayarwa da mai siye, da kuma cika kwangilar, ana iya isar da bututun ƙarfe tare da tsayi fiye da 12 000 mm ko ya fi guntu ni 000 mm amma ba ya fi guntu 3 000 mm; gajeren tsayi Yawan bututun ƙarfe da bai wuce 4,000 mm ba amma ƙasa da 3,000 mm ba zai wuce 5% na adadin bututun ƙarfe da aka kawo ba.
Nauyin bayarwa:
Lokacin da aka isar da bututun ƙarfe gwargwadon diamita na waje da kauri na bango mara kyau ko diamita na ciki da kauri maras tushe, ana isar da bututun ƙarfe gwargwadon nauyin na ainihi. Hakanan za'a iya isar da shi gwargwadon nauyin ma'auni.
Lokacin da aka isar da bututun ƙarfe gwargwadon diamita na waje da mafi ƙarancin kauri, ana isar da bututun ƙarfe gwargwadon nauyin gaske; bangarorin samar da bukatu suna tattaunawa. Kuma an nuna a cikin kwangilar. Hakanan za'a iya isar da bututun ƙarfe bisa ga nauyin ma'auni.
Haƙurin nauyi:
Dangane da buƙatun mai siye, bayan shawarwari tsakanin mai siye da mai siye, kuma a cikin kwangilar, ɓacin rai tsakanin ainihin nauyi da nauyin ma'auni na bututun ƙarfe na isar da bututu zai cika waɗannan buƙatu:
a) Bututun ƙarfe guda ɗaya: ± 10%;
b) Kowane tsari na bututun ƙarfe tare da ƙaramin girman 10 t: ± 7.5%.
Bukatar Gwaji
Gwajin Ruwa:
Yakamata a gwada bututun karfe ta hanyar ruwa daya bayan daya. Matsakaicin gwajin gwajin shine 20 MPa. A ƙarƙashin gwajin gwajin, lokacin tabbatarwa bai kamata ya zama ƙasa da 10 s ba, kuma bututun ƙarfe bai kamata ya zube ba.
Bayan mai amfani ya yarda, ana iya maye gurbin gwajin na'ura mai aiki da karfin ruwa ta gwajin eddy na yanzu ko gwajin kwararar ruwan maganadisu.
Gwajin mara lalacewa:
Bututun da ke buƙatar ƙarin dubawa ya kamata a bincikar ultrasonically daya bayan ɗaya. Bayan tattaunawar tana buƙatar izinin ƙungiyar kuma an ƙayyade a cikin kwangilar, ana iya ƙara wasu gwaje-gwaje marasa lalacewa.
Gwajin Lalacewa:
Tubes tare da diamita na waje fiye da 22 mm za a yi gwajin gwaji. Kada a ganuwa, fararen tabo, ko ƙazanta da ya kamata su faru yayin duk gwajin.
Gwajin Fitowa:
Dangane da bukatun mai siye kuma an bayyana a cikin kwangilar, bututun ƙarfe tare da diamita na waje ≤76mm da kauri bango ≤8mm ana iya yin gwajin flaring. Anyi gwajin a dakin da zafin jiki tare da taper na 60 °. Bayan flaring, ƙimar ƙimar diamita na waje ya kamata ya dace da buƙatun tebur mai zuwa, kuma kayan gwajin ba dole ba ne su nuna fashe ko rips.
| Nau'in Karfe
| Matsakaicin diamita na waje na bututun ƙarfe /% | ||
| Diamita na Ciki/Mai Girma | |||
| <0.6 | 0.6 zuwa 0.8 | > 0.8 | |
| High quality-carbon tsarin karfe | 10 | 12 | 17 |
| Tsarin gami karfe | 8 | 10 | 15 |
| • Ana ƙididdige diamita na ciki don samfurin. | |||
