S20400板，棒，管，鋼帶，線材，鍛件，鍛管，鍛板，鍛棒，圓棒，板材，薄板，無縫管，焊管，圓鋼，絲材

美國UNS

S20400

ASTM A240/240M-2018

對應(yīng)標(biāo)準(zhǔn)

用于制造壓力容器和一般用途的鉻和鉻鎳不銹鋼鋼板，薄板，鋼帶技術(shù)規(guī)范

Standard Specification for Chromium and Chromium-Nickel Stainless Sieel Plate, Sheet and Stip for Pressure vessels and General Applications

歸類

奧氏體不銹鋼

性能

耐腐蝕

標(biāo)簽

奧氏體型不銹鋼鉻-錳-鎳鋼

S20400化學(xué)元素成分含量(%)

焊接工藝流程：

①原材料開卷，平整——生產(chǎn)焊管所需的鋼板或鋼帶都是以卷的形式存在的，所以*步就是進(jìn)行開卷和平整。

②端部剪切及焊接——通過銑邊機(jī)對鋼板兩邊緣進(jìn)行雙面銑削，使之達(dá)到要求的板寬、板邊平行度和坡口形狀

③成形——在JCO成型機(jī)上首先將預(yù)彎后的鋼板的一半經(jīng)過多次步進(jìn)沖壓，壓成"J"形，再將鋼板的另一半同樣④彎曲，壓成"C"形，*后形成開口的"O"形。

⑤焊接——采用縱列多絲埋弧焊在成型后的鋼管兩側(cè)采用氣體保護(hù)焊（MAG）進(jìn)行連續(xù)焊接。

⑥內(nèi)外焊珠去除——對焊接形成的焊珠進(jìn)行清除。

⑦預(yù)校正——初步對整體進(jìn)行修正作業(yè)。

⑧感應(yīng)熱處理——用感應(yīng)電流使工件局部加熱的表面熱處理工藝。

⑨定徑及校直——根據(jù)訂單對感應(yīng)熱處理后的管子進(jìn)行定尺擴(kuò)徑，并校正成達(dá)標(biāo)的直線度。

⑩渦流檢測——可發(fā)現(xiàn)是否存在裂紋、夾雜、凹坑等缺陷。

⑾切斷——根據(jù)訂單對進(jìn)行定尺裁切。

⑿水壓檢查——在水壓試驗(yàn)機(jī)上對切斷后的管材進(jìn)行逐根檢驗(yàn)以保證焊管達(dá)到標(biāo)準(zhǔn)要求的試驗(yàn)壓力，該機(jī)具有自動(dòng)記錄和儲存功能。

⒀酸洗——利用酸溶液去除鋼管表面上的氧化皮和銹蝕物。

⒁*終檢查，包裝，出貨——終極檢查合格后的鋼管根據(jù)用戶要求進(jìn)行防腐和涂層后包裝等待出貨。

S20400不銹鋼管之焊管種類：

按焊縫分——S20400直縫焊管 —|—按斷面分——S20400菱形鋼管

按焊縫分——S20400螺旋焊管 —|—按斷面分——S20400圓形鋼管

按工藝分——S20400電弧焊管 —|—按斷面分——S20400方形鋼管

按工藝分——S20400氣焊管 —|—按斷面分——S20400橢圓形鋼管

按工藝分——S20400爐焊管 —|—按斷面分——S20400三角形鋼管

按工藝分——S20400低頻電阻焊管 —|—按斷面分——S20400六角形鋼管

按工藝分——S20400高頻電阻焊管 —|—按斷面分——S20400八角形鋼管

S20400 plate, bar, pipe, steel strip, wire, forging, forged pipe, forged plate, forged bar, round bar, plate, thin plate, seamless pipe, welded pipe, round steel, wire

United States UNS

S20400

ASTM A240/240M-2018

Corresponding standards

Standard Specification for Chromium and Chromium Nickel Stainless Steel Plates, Sheets, and Strips for Pressure Vessels and General Applications

Standard Specification for Chromium and Chromium-Nickel Stainless Sieel Plate, Sheet and Stip for Pressure vessels and General Applications

classification

austenitic stainless steel

performance

Corrosion resistance

label

Austenitic stainless steel chromium manganese nickel steel

Click to add a picture description (60 words at most)

edit

S20400 Chemical element content (%)

Click to add a picture description (60 words at most)

edit

Welding process flow:

① Uncoiling and leveling of raw materials - the steel plates or strips required for the production of welded pipes are in the form of coils, so the * step is uncoiling and leveling.

② End shearing and welding - the two edges of the steel plate are milled on both sides by the edge milling machine to achieve the required plate width, plate edge parallelism and groove shape

③ Forming: First, half of the pre bent steel plate is pressed into the "J" shape through multiple step stamping on the JCO forming machine, then the other half of the steel plate is similarly ④ bent and pressed into the "C" shape, and then the "O" shape of the opening is formed.

⑤ Welding - adopt longitudinal multi wire submerged arc welding to conduct continuous welding on both sides of formed steel pipe with gas shielded welding (MAG).

⑥ Internal and external weld bead removal - remove the weld bead formed by welding.

⑦ Precorrection - preliminary correction of the whole.

⑧ Induction heat treatment - surface heat treatment process in which the workpiece is locally heated by induction current.

⑨ Sizing and straightening - according to the order, the pipe after induction heat treatment shall be sized and expanded, and calibrated to reach the standard straightness.

⑩ Eddy current testing - can find whether there are cracks, inclusions, pits and other defects.

(11) Cutting - cutting according to the order.

(12) Hydrostatic inspection: inspect the cut pipes one by one on the hydrostatic testing machine to ensure that the welded pipes meet the test pressure required by the standard. The machine has the function of automatic recording and storage.

(13) Pickling - use acid solution to remove oxide skin and rust on the steel pipe surface.

(14) * Final inspection, packaging and shipment - the steel pipes that pass the final inspection shall be coated and coated according to the user's requirements, and then packaged for shipment.

Type of S20,400 stainless steel pipe welding pipe:

Classified by welding seam - S20400 straight seam welded pipe - | - Classified by section - S20400 rhombic steel pipe

Classified by weld - S20400 spiral welded pipe - | - Classified by section - S20400 round steel pipe

Classified by process - S20400 arc welded pipe - | - Classified by section - S20400 square steel pipe

Classified by process - S20,400 gas welded pipe - | - Classified by section - S20,400 oval steel pipe

Classified by process - S20400 furnace welded pipe - | - Classified by section - S20400 triangular steel pipe

Classified by process - S20400 low frequency resistance welded pipe - | - Classified by section - S20400 hexagonal steel pipe

Classified by process - S20400 high-frequency resistance welded pipe - | - Classified by section - S20400 octagonal steel pipe

德國不銹耐熱鋼

X7Cr13 X7Cr14 X7CrAl13 X12CrS13 X10Cr13 X8Cr17 X20Cr13 X15Cr13 X46Cr13 X22CrNi17 X12CrMoS17 X100CrMo13 X65CrMo14 X55CrMo14 X110CrMoV15 X90CMoV18 X6CrMo17 X45CuMoV15 X38CrMoV15 X15CrMo13 X20CrMo13 X35CrMo17 X105CrMo17 X5CrNi189 X5CrNi1911 X12CrNiS188 X2CrNi189 X12CrNi177 X2CrNiN1810 X2NiCr1815 X5CrNiMo1810 X2CrNiMo1810 X2CrNiMoN1812 X2CrNiMoN1813 X2CrNiMo1812 X5CrNiMo1812 X2CrNiMo1816 X3CrNiMoN17135 X5CrNiMo1713 X8CrNiMo275 X12CrNiMoN225 X5NiCrMoCuNb2018 X5NiCrMoCuTi2018 X8CrTi17 X8CrNb17 X5CrTi12 X8CrMoTi17 X90CrCoMoV17 X2NiCrMoCu25205 X10CrNiTi189 X5CrNiNb189 X10CrNiNb189 X10CrNiMoTi1810 X10CrNiMoTi1812 X5CrNiMoTi2525 X10CrNiMoNb1810 X4CrNiMoNb257 X10CrNiMoNb1812 X5NiCrMoCuNb2218 X8CrCoNiMo106 X19CrMoVNbN111 X6CrNiMo1713 X15CrMo121 X19CrMo121 X20CrMoV121 X22CrMoV121 X20CrMoWV121 X6CrNiWNb1616 X6CrNi1811 X8CrNiNb1613 X12CrNiWTi1613 X8CrNiMoBNb1616 X8CrNiMoVNb1613 8CrSi77 X10CrSi6 X10CrAl7 X10CrSi13 X10CrAl3 X10CrSi18 X10CrAl18 X10CrAl24 X20CrNiS1254 X15CrNiSi2012 X15CrNiSi2520 X12CrNiTi189 8SiTi4 X7CrTi12 X7CrNi2314 65Si7 X50NiCrWV1313 X40MnCr18 X45SiCr4 X45CrSi93 X215Cr12 X40CrSiMo102 X80CrSiMoW152 X80CrNiSi20 X85CrMoV182 X53CrMoNiN219 X45CrNiW189 X55CrMnNiN208 X70CrMnNiN216 37MnSi5 X45CrNiMo235 X120Mn13 X35Mn18 X40MnCrN19 X40MnCr182 X40MnCr23 X40MnCr18 X50MnCrV2014 X4CrNi1813 X5MnCr1813 X4CrNiMoN1814 X2CrNiMo1815 X8CrNi1812 X5CrNi1811 X45MnNiCrV1376 X25CrNiMnP1810 X15CrNiMn1210 X8CrMnNi188 X50CrMnNiN229 X12MnCr1812 1.4000 1.4001 1.4002 1.4005 1.4006 1.4016 1.4021 1.4024 1.4034 1.4057 1.4104 1.4108 1.4109 1.4110 1.4111 1.4112 1.4113 1.4116 1.4117 1.4119 1.4120 1.4122 1.4125 1.4301 1.4303 1.4305 1.4306 1.4310 1.4311 1.4321 1.4401 1.4404 1.4406 1.4429 1.4435 1.4436 1.4438 1.4439 1.4449 1.4460 1.4462 1.4505 1.4506 1.4510 1.4511 1.4512 1.4523 1.4535 1.4539 1.4541 1.4543 1.4550 1.4571 1.4573 1.4577 1.4580 1.4582 1.4583 1.4586 1.4911 1.4913 1.4914 1.4919 1.4920 1.4921 1.4922 1.4923 1.4935 1.4945 1.4948 1.4961 1.4962 1.4986 1.4988 1.4700 1.4712 1.4713 1.4722 1.4724 1.4741 1.4742 1.4762 1.4821 1.4828 1.4841 1.4845 1.4861 1.4878 1.4710 1.4720 1.4833 1.0906 1.2731 1.3817 1.4704 1.4718 1.4721 1.4731 1.4732 1.4747 1.4748 1.4871 1.4873 1.4875 1.4881 1.5122 1.4994 1.3802 1.3805 1.3813 1.3815 1.3816 1.3817 1.3819 1.3941 1.3949 1.3952 1.3953 1.3956 1.3958 1.3960 1.3961 1.3962 1.3965 1.3967 1.3968