1. 制(zhi)定標準的意義


   GB/T 34107-2017為(wei)首次制定,主編單(dan)位為(wei)江蘇銀(yin)環精密鋼管有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si),參加(jia)起草(cao)單(dan)位有(you)(you)江蘇武進不銹股份有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、中(zhong)國鐵道科學研究(jiu)院(yuan)標(biao)準計量研究(jiu)所、上海奉賢鋼管廠有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、山西太鋼不銹鋼鋼管有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、中(zhong)車(che)(che)(che)(che)株洲(zhou)電力機車(che)(che)(che)(che)有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、中(zhong)車(che)(che)(che)(che)大連(lian)機車(che)(che)(che)(che)車(che)(che)(che)(che)輛有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、中(zhong)車(che)(che)(che)(che)青島四方(fang)機車(che)(che)(che)(che)車(che)(che)(che)(che)輛股份有(you)(you)限(xian)(xian)公(gong)(gong)(gong)司(si)、冶(ye)金工業信息標(biao)準研究(jiu)院(yuan)。


   制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)是(shi)保障軌道(dao)(dao)交通(tong)車(che)(che)輛(liang)(liang)安全營運的(de)(de)關鍵設(she)備。制(zhi)動(dong)(dong)(dong)(dong)動(dong)(dong)(dong)(dong)力源為壓縮(suo)空(kong)氣或(huo)(huo)制(zhi)動(dong)(dong)(dong)(dong)液(ye),精密不(bu)(bu)銹鋼(gang)無(wu)縫鋼(gang)管(guan)是(shi)用來輸送壓縮(suo)空(kong)氣或(huo)(huo)制(zhi)動(dong)(dong)(dong)(dong)液(ye),實現制(zhi)動(dong)(dong)(dong)(dong)作用的(de)(de)載體(ti)。制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)對(dui)(dui)精密不(bu)(bu)銹鋼(gang)無(wu)縫鋼(gang)管(guan)的(de)(de)要(yao)(yao)求(qiu)非常(chang)嚴格,其質量直(zhi)(zhi)接(jie)影響車(che)(che)輛(liang)(liang)制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)的(de)(de)性能。制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)的(de)(de)各種閥(fa)類零件(jian)對(dui)(dui)精密不(bu)(bu)銹鋼(gang)無(wu)縫鋼(gang)管(guan)內表(biao)面的(de)(de)清潔(jie)度要(yao)(yao)求(qiu)非常(chang)高(gao),不(bu)(bu)允(yun)許內表(biao)面存(cun)在異(yi)物、氧(yang)化(hua)皮脫落、銹蝕等(deng)缺(que)陷(xian)存(cun)在。否則會造(zao)成閥(fa)部(bu)件(jian)堵塞,動(dong)(dong)(dong)(dong)作失靈,造(zao)成制(zhi)動(dong)(dong)(dong)(dong)故障,從而危(wei)及行車(che)(che)安全。軌道(dao)(dao)交通(tong)車(che)(che)輛(liang)(liang)制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)用不(bu)(bu)銹鋼(gang)無(wu)縫鋼(gang)管(guan)每臺/節機車(che)(che)車(che)(che)輛(liang)(liang)大(da)致使(shi)用300公斤左右。鋼(gang)管(guan)在軌道(dao)(dao)交通(tong)車(che)(che)輛(liang)(liang)組裝過(guo)程(cheng)中,通(tong)常(chang)會進行彎制(zhi)加(jia)工(gong)、預裝卡套(tao)、加(jia)工(gong)管(guan)螺紋(wen)、焊接(jie)、機加(jia)工(gong)等(deng)工(gong)藝(yi)過(guo)程(cheng)。在經(jing)過(guo)這些工(gong)業(ye)過(guo)程(cheng)之后(hou),鋼(gang)管(guan)不(bu)(bu)應(ying)開(kai)裂、起皺,或(huo)(huo)有(you)超過(guo)工(gong)藝(yi)規定的(de)(de)缺(que)陷(xian)存(cun)在。軌道(dao)(dao)交通(tong)車(che)(che)輛(liang)(liang)運行環境復(fu)雜,接(jie)觸(chu)風、霜、雨、雪(xue)、粉塵、煤塵、紫外線(xian)(xian)等(deng);還能夠(gou)遇到弱(ruo)酸、弱(ruo)堿等(deng)工(gong)況(kuang)。目(mu)前,鐵(tie)路(lu)機車(che)(che)車(che)(che)輛(liang)(liang)運行的(de)(de)線(xian)(xian)路(lu)越來越長(例如從哈爾濱到廣州),氣候變化(hua)劇烈,對(dui)(dui)制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)鋼(gang)管(guan)的(de)(de)耐候性能提(ti)出了(le)更高(gao)要(yao)(yao)求(qiu)。軌道(dao)(dao)交通(tong)車(che)(che)輛(liang)(liang)在日常(chang)的(de)(de)保養過(guo)程(cheng)中,制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)部(bu)分管(guan)路(lu)可能會直(zhi)(zhi)接(jie)接(jie)觸(chu)工(gong)業(ye)清洗(xi)劑。這些都對(dui)(dui)機車(che)(che)車(che)(che)輛(liang)(liang)制(zhi)動(dong)(dong)(dong)(dong)系(xi)(xi)(xi)(xi)統(tong)(tong)用鋼(gang)管(guan)的(de)(de)抗腐(fu)蝕、強(qiang)度等(deng)性能提(ti)出了(le)很高(gao)的(de)(de)要(yao)(yao)求(qiu)。


   本標準制定前,軌道交通車輛制動系統用精密不銹(xiu)鋼無縫(feng)鋼管沒有統一的國家標準,用戶訂貨基本上都引用了歐盟或德國的標準。本標準的制定,有利于高端裝備制造用原材料的國產化。該標準適用于軌道交通車輛(機車、動車組、城軌車輛、客貨運車輛等)空氣或液壓制動系統用精密奧氏體不銹鋼無縫鋼管。


2.  主要技術(shu)內容


   鋼管外徑尺寸范圍為6~48.3mm,壁厚為1.0~4.0mm。外徑范圍6~30mm的允許偏差為±0.08mm;壁厚范圍>1.5~2.5mm的允許偏差為±0.15mm。鋼的牌號包括06Cr19Ni10022Cr19Ni1006Cr17Ni12Mo2022Cr17Ni12Mo206Cr17Ni12Mo2Ti06Cr18Ni11Ti等6個牌號。鋼管采用冷拔(軋)無縫方法制造,以光亮固溶處理狀態交貨。力學性能要求包括拉伸和硬度。鋼管應進行液壓、壓扁、彎曲、擴口、晶間腐蝕和無損等檢驗。鋼管的內外表面應清潔、光亮、色澤均勻,無氧化皮等異物,表面粗糙度Ra應不大于3.2μm。采用不低于0.8MPa的干燥潔凈壓縮空氣逐根吹掃鋼管內表面,不應吹出任何肉眼可見的固態或液態雜物。鋼管使用木箱包裝,防護應符合鐵路標準TB/T 3218的規定,并采用外套式管帽。鋼管采用噴標方式每隔2米重復標識。鋼管的并應采用防水防潮的箱式包裝。


3. 國內外標準對比及標準水平(ping)


   和《壓力用途的(de)無縫(feng)鋼(gang)管交(jiao)貨技術條(tiao)件(jian)(jian)第5部分(fen)不銹鋼(gang)管》(EN 10216-5)、《精密用途的(de)鋼(gang)管交(jiao)貨技術條(tiao)件(jian)(jian)第1部分(fen)無縫(feng)冷拔管》(EN10305-1)等標準(zhun)相(xiang)比,本標準(zhun)在尺寸允許(xu)偏差(cha)、表面質量、化學成分(fen)、工藝性(xing)能、無損(sun)檢測、包(bao)裝等方面的(de)要求更加明確、具體和嚴格。本標準(zhun)為國際先(xian)進(jin)水平。





聯系方式.jpg