35號無縫管質量好不好

35號無縫管的原料是圓管坯，圓管胚要經過切割機的切割加工成長度約為1米的坯料，并經傳送帶送到熔爐內加熱。鋼坯被送入熔爐內加熱，溫度大約為1200℃。燃料為氫氣或乙炔。爐內溫度控制是關鍵性的問題·圓管坯出爐后要經過壓力穿孔機進行穿空。一般較常見的穿孔機是錐形輥穿孔機，這種穿孔機生產效率高，產品質量好，穿孔擴徑量大，可穿多種鋼種。穿孔后，圓管坯就先后被三輥斜軋、連軋或擠壓。擠壓后要脫管定徑。定徑機通過錐形鉆頭高速旋轉入鋼胚打孔，形成鋼管。鋼管內徑由定徑機鉆頭的外徑長度來確定。鋼管經定徑后，進入冷卻塔中，通過噴水冷卻，鋼管經冷卻后，就要被矯直。35號無縫管經矯直(zhi)后由傳送帶送至(zhi)金屬探(tan)傷機（或水壓實(shi)驗）進(jin)行(xing)內部探(tan)傷。若鋼(gang)管內部有裂紋，氣泡等(deng)(deng)問題，將被探(tan)測出。鋼(gang)管質檢后還要通過嚴格(ge)(ge)的(de)手工挑(tiao)選。鋼(gang)管質檢后，用油漆噴上(shang)編號、規格(ge)(ge)、生產批號等(deng)(deng)。并由吊車吊入倉庫(ku)中。

規格

35號無縫管的規格用外徑*壁(bi)(bi)厚(hou)毫米數表示。φ:756MM;壁(bi)(bi)厚(hou):100MM以下

35號無縫管是用鋼錠或實心管坯經穿孔制成毛管，然后經熱軋、冷軋或冷撥制成，35無縫鋼管屬鋼材中的一種材質，屬優質碳素結構鋼，大量的模具生產公司會用到，做模具鋼使用。無縫管在我國(guo)鋼(gang)管(guan)業中具(ju)有(you) ，重(zhong)要的地位。據不完全統(tong)計，我國(guo)現(xian)有(you)35號無縫(feng)鋼(gang)管(guan)生產企業約240多(duo)家，無縫(feng)鋼(gang)管(guan)機組約250多(duo)套，年產能力約450多(duo)萬(wan)(wan)噸(dun)。從(cong)(cong)口徑看，<φ76的，占35%，<φ159-650的，占25%。從(cong)(cong)品種看，一(yi)般用途管(guan)190萬(wan)(wan)噸(dun)，占54%；石油管(guan)76萬(wan)(wan)噸(dun)，占5.7%；液(ye)壓(ya)支柱、精密管(guan)15萬(wan)(wan)噸(dun)，占4.3%；不銹管(guan)、軸承管(guan)、汽車管(guan)共5萬(wan)(wan)噸(dun)，占1.4%。

無縫管的分類：　無縫管分熱軋和冷軋（撥）無縫鋼管兩類。 　熱軋無縫鋼管分一般鋼管，低、中壓鍋爐鋼管，高壓鍋爐鋼管、合金鋼管、不銹鋼管、石油裂化管、地質鋼管和其它鋼管等。 　冷軋（撥）無縫鋼管除分一般鋼管、低中壓鍋爐鋼管、高壓鍋爐鋼管、合金鋼管、不銹鋼管、石油裂化管、其它鋼管外，還包括碳素薄壁鋼管、合金薄壁鋼管、不銹薄壁鋼管、異型鋼管。熱軋無縫管外徑一般大于 32mm，壁厚2.5-75mm，冷軋無縫鋼管處徑可以到6mm，壁厚可到0.25mm，薄壁管外徑可到5mm，壁厚小于0.25mm，冷軋比熱軋尺寸精度高。 　一般用無縫鋼管：是用10、20、30、35、45等優質碳結鋼16Mn、5MnV等低合金結構鋼或40Cr、30CrMnSi、45Mn2、40MnB等合金鋼熱軋或冷軋制成的。10、20等低碳鋼制造的無縫管主要用于流體輸送管道。45、40Cr等中碳鋼制成的無縫管用來制造機械零件，如汽車、拖拉機的受力零件。一般用無縫鋼管要保證強度和壓扁試驗。熱軋鋼管以熱軋狀態或熱處理狀態交貨；冷軋以熱處理狀態交貨。 　低中壓鍋爐用無縫鋼管：用于制造各種低中壓鍋爐、過熱蒸汽管、沸水管、水冷壁管及機車鍋爐用過熱蒸汽管、大煙管、小煙管和拱磚管等。用優質碳素結構鋼熱軋或冷軋（撥）無縫鋼管。主要用10、20號鋼制造，除保證化學成分和機械性能外要做水壓試驗，卷邊、擴口、壓扁等試驗。熱軋以熱軋狀態交貨、冷軋（撥）以熱處理狀態交貨。 　高壓鍋爐鋼管：主要用來制造高壓及其以上壓力的蒸汽鍋爐管道等用的優質碳素結構鋼、合金結構鋼和不銹耐熱鋼無縫鋼管、這些鍋爐管經常處于高溫和高壓下工作、管子在高溫煙氣和水蒸汽的作用下還會發生氧化和腐蝕，因此要求鋼管有高的持久強度、高的抗氧化性能，并具有良好的組織穩定性，采用鋼號有：優質碳素結構鋼鋼號有20G、20MnG、25MnG；合金結構鋼鋼號15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等；有銹耐熱鋼常用1Cr18Ni9、1Cr18Ni11Nb高壓鍋爐管除保證化學成分和機械性能外，要逐根做水壓試驗，要作擴口、壓扁試驗。鋼管以熱處理狀態交貨。此外，對成品鋼管顯微組織、晶粒度、脫碳層也有一定要求。 　地質鉆探及石油鉆探用無縫鋼管：為探明地下巖層結構、地下水、石油、天然氣及礦產資源情況，利用鉆機打井。石油、天然氣開采更離不開打井，地質鉆探用石油鉆探用無縫鋼管是鉆井的主要器材，主要包括巖芯外管、巖芯內管、套管、鉆桿等。由于鉆探用管要深入到幾千米地層深度工作，工作條件極為復雜，鉆桿承受拉、壓、彎曲、扭轉和不均衡沖擊載荷等應力作用，還要受到泥漿、巖石磨損，因此，要求管材必須具有足夠的強度、硬度、耐磨性和沖擊韌性，鋼管用鋼用“DZ”（地質的漢語拼音字頭）加數字一代表鋼屈服點表示，常用的鋼號有DZ45的45MnB、50Mn；DZ50的40Mn2、40Mn2Si；DZ55的40Mn2Mo、40MnVB；DZ60的40MnMoB、DZ65的27MnMoVB。鋼管都以熱處理狀態交貨。 　石油裂化管：用于石油煉廠的爐管、熱交換器管和管道用無縫管。常用優質碳素鋼（10、20）、合金鋼（12CrMo、15CrMo）、耐熱鋼（12Cr2Mo、15Cr5Mo）、不銹鋼（1Cr18Ni9、1Cr18Ni9Ti）制造。鋼管除得證化學成分和各種機械性能外，還要保證水壓、壓扁、擴口等試驗，及35號無縫管表(biao)面質量和(he)無(wu)損檢(jian)驗。鋼(gang)(gang)(gang)管(guan)(guan)在熱處理狀態下交貨。不銹(xiu)鋼(gang)(gang)(gang)管(guan)(guan)：用(yong)(yong)各種(zhong)(zhong)不銹(xiu)鋼(gang)(gang)(gang)熱軋，冷軋的不銹(xiu)鋼(gang)(gang)(gang)管(guan)(guan)，廣泛應(ying)用(yong)(yong)于(yu)石(shi)油、化(hua)(hua)工(gong)設備管(guan)(guan)道和(he)各種(zhong)(zhong)用(yong)(yong)途(tu)的35號(hao)無(wu)縫管(guan)(guan)結(jie)構零件(jian)，除應(ying)保(bao)證(zheng)化(hua)(hua)學成分和(he)機械性能，凡用(yong)(yong)作承(cheng)受流體壓(ya)力的鋼(gang)(gang)(gang)管(guan)(guan)要保(bao)證(zheng)水(shui)壓(ya)試(shi)驗合格。各種(zhong)(zhong)專(zhuan)用(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)要按(an)規定保(bao)證(zheng)條件(jian)。

無縫管執行標準

1、結構(gou)(gou)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB8162-2008 2、輸送流(liu)體(ti)用(yong)(yong)(yong)地縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB8163-20083、鍋爐用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB3087-2008 4、鍋爐用(yong)(yong)(yong)高(gao)(gao)壓無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)：GB5310-2008（ST45.8-Ⅲ型） 5、化肥設備(bei)用(yong)(yong)(yong)高(gao)(gao)壓無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB6479-1999 6、地質(zhi)鉆探(tan)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：YB235-70 7、石(shi)油鉆探(tan)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：YB528-65 8、石(shi)油裂化用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB9948-88 9、石(shi)油鉆鋌專用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)：YB691-70 10、汽車(che)半軸用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB3088-1999 11、船(chuan)舶(bo)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB5312-1999 12、冷(leng)(leng)拔(ba)冷(leng)(leng)軋精(jing)密無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)：GB3639-1999 13、各種合金管(guan)(guan)(guan)(guan)(guan)(guan)16Mn、27SiMn、15CrMo、35CrMo、12CrMov、20G、40Cr,12Cr1MoV,15CrMo　 　另外，還有GB/T17396-1998（液壓支柱用(yong)(yong)(yong)熱(re)軋無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB3093-1986（柴油機(ji)用(yong)(yong)(yong)高(gao)(gao)壓無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB/T3639-1983（冷(leng)(leng)拔(ba)或冷(leng)(leng)軋精(jing)密無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB/T3094-1986（冷(leng)(leng)拔(ba)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)異形鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB/T8713-1988（液壓和氣動筒用(yong)(yong)(yong)精(jing)密內徑(jing)(jing)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB13296-1991（鍋爐、熱(re)交換器用(yong)(yong)(yong)不銹鋼(gang)(gang)(gang)(gang)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB/T14975-1994（結構(gou)(gou)用(yong)(yong)(yong)不銹鋼(gang)(gang)(gang)(gang)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、GB/T14976-1994（流(liu)體(ti)輸送用(yong)(yong)(yong)不銹鋼(gang)(gang)(gang)(gang)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）GB/T5035-1993（汽車(che)半軸套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)）、API SPEC5CT-1999（套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)和油管(guan)(guan)(guan)(guan)(guan)(guan)規范）等(deng)。 　無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)重(zhong)量(liang)計算(suan)公式:[(外徑(jing)(jing)-壁厚)*壁厚]*0.02466=kg/米(每米的重(zhong)量(liang))

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