3PE防腐工藝流程圖

1、天津市惠利豐防腐保溫鋼管有限公司Tianjin Huilifeng Anti-Corrosion And Insulation Steel Pipe Co,.Ltd3PE 防腐工藝流程圖3 Layer Polyethylene Anti-corrosion Coating Production Process Chart底層噴涂環(huán)氧粉末中層擠出包覆膠粘劑外層擠出包覆 PE / PP其中熔結(jié)環(huán)氧粉末層和膠粘劑層的基本作用是保證整個防腐層對鋼 體的粘結(jié)，聚烯烴層是提供腐蝕防護(hù)的主體。生產(chǎn)中的主要控制點(diǎn)：1、表面處理質(zhì)量；2、涂裝溫度和環(huán)氧粉末固化時間。產(chǎn)品主要質(zhì)量問題：1、防腐層粘接失效；2、焊縫

2、處防腐層減?。?、氣泡。氣泡的成因：錯口，壓輥硬度、位置和壓力 壓輥問題導(dǎo)致焊縫、管頭位置，有時也可以在壓邊位置，甚至 任意部位，產(chǎn)生氣泡。錯口幅度超過壓輥對氣泡的排除能力，位置低的管端將產(chǎn)生氣 泡。彎管防腐問題 最早熱煨彎管的外防腐涂層分別采用進(jìn)口液體環(huán)氧外纏中央制 塑聚丙烯增強(qiáng)纖維膠帶保護(hù)方式。熱收縮套單層 FBE 外纏膠帶保護(hù) 雙層 FBE 綜合性能都達(dá)不到 3PE 的防腐水平，造價卻高了許多三、粉末噴涂 3PE 技術(shù)介紹Z245.21-02 External Polyethylene Coating for PipeThis Standard covers the following

3、coating systems:(a) System A1: a coating that consists of an adhesive and a polyethylene outer sheath;(b) System A2: a coating that consists of an adhesive and a polyethylene outer sheath that has more stringent peel adhesion requirements than those for System A1;(c) System B1: a coating that consis

4、ts of a liquid or powdered epoxy primer, a polymeric adhesive, anda polyethylene outer sheath; and(d) System B2: a coating that consists of a powdered epoxy primer, a powdered copolymer adhesive,and a powdered polyethylene outer layer.管道PE包覆防腐生產(chǎn)線t涂敝作業(yè)線全景岸終檢測電火花檢漏儀3PP/3PE/FBE外防腐生產(chǎn)工藝流程圖3PP3PEFBE Exter

5、nal anticorrosion manufacturing flow Chart上管 中頻預(yù)熱 拋丸除銹 feeding UP牆駕膘Xy irPe,ler blaslinQ管內(nèi)吹掃clean ng and sweeping管段貼紙StiCking水冷water cooling膠粘劑涂敷.仝聚乙烯纏繞噴涂Winding With POlyelhyIene SPray Coatlngand adhesive COatlng 中頻加熱heating bymedium frequency微塵處理dusting包裝入庫PaCking and WarehOUSing端口打磨PlPe ends grin

6、 ding涂層檢測COating inspection啖標(biāo)marking內(nèi)防腐生產(chǎn)工藝流程圖Internal anIiCOrrOSiOn manufacturing flow Ghart除銹檢測 impeller blasting管內(nèi)吹掃Clearing and SWeePingimpeller blastingZdingup S內(nèi)壁噴涂 inner $rSying涂層干燥COating drying濕膜檢測 Wet film inspection入庫WarehOUSing干膜檢測 dry film inspection管端貼紙 StiCking涂層修補(bǔ) COating repairing成品

7、檢驗(yàn)標(biāo)識/管端保護(hù)Pr(XjUCt inspectionmarking/PiPe ends PrOteCtiOn鋼管外防腐主要質(zhì)指標(biāo)ThirtGenth:quality index Of external COating Of Steel PiPeDlN 30670 和管件的廉小涂層卻度按下表透定：DlN 30670 Wyethyterw OOabngSO(SteelpPeSand fittngs*. The minrmj COating INckness ShoUld be SeIeCted acoocng to the following tableIR*尺可SW M4 IttWOOT =

8、MO3035SYT0413-2002 (埋地鋼0iii8t乙雄妙JKJi技術(shù)標(biāo)準(zhǔn)：)3Pf2PE5B的最小理度SY/T0413-2002 eTechnieaI Standard Of POtyethyIene coating for bued SteeI PlPellne.The EiniEUE thickness Of 3PE2PE ating: 注$丼姒部位防祗尼的庠度不蟲小干規(guī)定值的70%Note: the COating thickness On WeId seam ShCMJld be not IeSS than 70% Of SPedfied VaIUe恫公體輕NalDN rm)9*9末洽Hl fBE Coabng 6 Mn) thcKncMQfCOatingViee Generalgrade (G)Jniktt Reoforcenientgrade S)DNiloO120t7Q-2W162 1DNi2S0202 72SODNSOO222 950050N7DlN 30678 (IRt和管件的段丙烯涂展 3PP2PPKlBffl小即度DlN 30678 liPoIyethyIene COating Of Steel Pi