Yadda za a zaɓi kayan bawul a ƙarƙashin yanayin zafin jiki mai ƙarfi

A cikin tsarin isar da ruwa, bawul din wani bangare ne mai matukar muhimmanci, wanda galibi yake da ayyuka na tsari, jujjuyawa, sake dawo da ruwa, yankewa, da kuma shunt. Ana amfani da bawul din a cikin masana'antu da filayen jama'a. Bawul ɗin zafin jiki mai yawan gaske nau'in da aka saba amfani dashi a cikin bawul. Abubuwan takamaiman abubuwansa sune kamar haka: kyakkyawan aikin ƙonawa, ana iya yin zurfin quenching; kyakkyawan walda; kyakkyawan shafar tasiri, yana da wahala a lalata shi ta hanyar rikici; Banƙarar saurin fushi yakan zama ƙasa da sauransu. Akwai nau'ikan nau'ikan bawul masu yawan zafin jiki. Mafi na kowa sune yawan zafin jikimalam bawul, high-zazzabi kwalliyar kwalliya, matattara mai tsananin zafi, da kuma yawan zafin jiki ƙofar bawul.

Bawul masu tsananin zafin jiki sun hada da bawul din kofa mai tsananin zafin jiki, bawul din rufe-zazzabi mai zafi, bawul din duba yanayin zafin jiki, bawul din zafin jiki mai tsananin zafi, bawul mai yawan zafin jiki mai zafi, allurar allura mai zafin jiki mai tsananin zafin jiki, bawul masu rage yawan zafin jiki. Daga cikin su, wanda aka fi amfani da shi sune bawul ɗin ƙofa, bawul ɗin duniya, bawul ɗin bincike, bawul ɗin ball da bawul

Babban yanayin zafin jiki na aiki yafi hadawa da sub-high zazzabi, zazzabi mai dumama high, zafin jiki high, zafin jiki high, zazzabi Ⅳ, da kuma babban zazzabi Ⅴ, waɗanda za'a gabatar dasu daban a ƙasa.

Industry

1. Sub-high zafin jiki

Sub-high zafin jiki yana nufin cewa zafin jiki na aiki na bawul yana cikin yankin na 325 425 ℃. Idan matsakaiciyar ruwa da tururi ne, ana amfani da WCB, WCC, A105, WC6 da WC9. Idan matsakaici shine mai dauke da sulfur, C5, CF8, CF3, CF8M, CF3M, da dai sauransu, waɗanda ke da tsayayya ga lalata sulfide, yawanci ana amfani dasu. Ana amfani dasu galibi a cikin na'urori masu rage yanayi da matsi da jinkirta na'urorin coking a matatun mai. A wannan lokacin, bawul ɗin da aka yi da CF8, CF8M, CF3 da CF3M ba a amfani da su don jurewar lalata hanyoyin maganin acid, amma ana amfani da su ne don abubuwan da ke dauke da sulfur da bututun mai da gas. A wannan yanayin, matsakaicin yanayin aiki na CF8, CF8M, CF3 da CF3M shine 450 ° C.

 

2. Babban zazzabi Ⅰ

Lokacin da yawan zafin jiki na aiki bawul ya kasance 425 550 ℃, shi ne aji mai yawan zafin jiki I (wanda ake kira ajin PI). Babban abu na PI sa bawul ne "high zazzabi Ⅰ sa matsakaici carbon chromium nickel rare ƙasa titanium high quality zafi-resistant karfe" tare da CF8 a matsayin ainihin siffar a cikin ASTMA351 misali. Saboda darajan PI suna ne na musamman, ma'anar ƙarfe mai baƙin ƙarfe mai ƙarfi (P) an haɗa shi anan. Sabili da haka, idan matsakaiciyar aiki ruwa ce ko tururi, kodayake ƙarfe mai ƙarfin zafin jiki WC6 (t≤540 ℃) ko WC9 (t≤570 ℃) ana iya amfani da su, yayin da ana iya amfani da samfuran mai dauke da sulfur C5 (ZG1Cr5Mo), amma Ba za a iya kiran su PI-class nan ba.

 

3. Babban zazzabi II

Zafin jiki na aiki na bawul din 550 ne 650 ℃, kuma an sanya shi azaman babban zazzabi referred (wanda ake kira P Ⅱ). Ana amfani da bawul mai tsananin zafin jiki mai nauyi a cikin matattarar fatalwar mai na matatun mai. Ya ƙunshi bawul ɗin ƙofa mai jure zafin jiki mai amfani da ƙarfi a cikin bututun juyawa uku da sauran sassan. Babban abu na PⅡ sa bawul ne "high zazzabi Ⅱ sa matsakaici carbon chromium nickel rare ƙasa titanium tantalum ƙarfafa zafi-juriya karfe" tare da CF8 matsayin asali siffar a cikin ASTMA351 misali.

 

4. Babban zazzabi III

Zafin jiki na aiki na bawul 650 ne 730 ℃, kuma ana sanya shi azaman babban zazzabi na III (wanda ake kira PⅢ). Ana amfani da bawul masu tsananin zafin jiki mai nauyi a manyan raka'o'in fatattakawar mai a matatun mai. Babban kayan aikin PⅢ mai tsananin zafin jiki bawul shine CF8M dangane da ASTMA351.

 

5.High zazzabi Ⅳ

Zafin jiki na aiki na bawul din 730 ne 816 ℃, kuma an ƙaddara shi azaman zazzabi mai ƙarfi na IV (wanda ake kira PIV a takaice). Matsakaicin sama na yawan zafin jiki na aiki na PIV bawul shine 816 ℃, saboda mafi girman zazzabin da aka bayar ta daidaitaccen matakin ASMEB16134 wanda aka zaba don ƙirar bawul shine 816 ℃ (1500υ). Bugu da kari, bayan aikin zafin jiki ya zarce 816 ° C, karafan yana dab da shiga yankin da ke shiga yanayin zafi. A wannan lokacin, karfan yana cikin yankin nakasar filastik, kuma karfen yana da kyakyawan filastik, kuma yana da wahala a iya jure matsin lamba mai karfi da karfin tasiri da kiyaye shi daga lalacewa. Babban abu na P Ⅳ bawul shine CF8M a cikin mizanin ASTMA351 azaman sifa ta asali “babban zazzabi Ⅳ matsakaicin carbon chromium nickel molybdenum rare earth titanium tantalum ya ƙarfafa ƙarfe mai jure zafin rana”. CK-20 da ASTMA182 misali F310 (gami da abun ciki C ≥01050%) da F310H bakin karfe mai juriya mai zafi.

 

6, babban zazzabi Ⅴ

Zafin jiki na aiki na bawul ya fi 816 ℃, wanda ake kira PⅤ, PⅤ babban bawul na zafin jiki (don bawul din rufewa, ba tsara bawul ɗin malam buɗe ido) dole ne ya bi hanyoyin ƙira na musamman, kamar rufin rufin rufi ko ruwa ko gas Sanyaya iya tabbatar da aiki na bawul. Sabili da haka, ba a kayyade iyakar ƙarfin zafin jiki na aiki na PⅤ ajin babban zafin jiki ba, saboda yawan zafin jiki na aiki na bawul ɗin sarrafawa ba kawai abin abu ne ya ƙaddara shi ba, amma ta hanyoyin ƙira na musamman, da mahimmin ƙa'idar tsarin ƙira iri daya ne. PⅤ saitin zafin jiki mai zafin jiki na iya zaɓar kyawawan kayan aiki waɗanda zasu iya haɗuwa da bawul ɗin gwargwadon matsakaiciyar aikinta da matsin aiki da hanyoyin ƙirar musamman. A cikin PⅤ aji mai tsananin zafin jiki, yawanci ana sanya flapper ko baful bawul na flue flapper bawul ko bawul din malam buɗe ido daga HK-30 da HK-40 mai haɗarin zafin jiki mai girma a cikin mizanin ASTMA297. Lalata mai jurewa, amma ba zai iya jure firgita da lodi mai nauyi ba.


Post lokaci: Jun-21-2021