CN104002014B - A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel - Google Patents
A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel Download PDFInfo
- Publication number
- CN104002014B CN104002014B CN201410211269.4A CN201410211269A CN104002014B CN 104002014 B CN104002014 B CN 104002014B CN 201410211269 A CN201410211269 A CN 201410211269A CN 104002014 B CN104002014 B CN 104002014B
- Authority
- CN
- China
- Prior art keywords
- welding
- smaw
- resistance
- groove
- atmospheric corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention is a kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel, the yield strength ReL >=415MPa of mother metal, tensile strength 520-680MPa, percentage elongation >=22% ,-40 DEG C of ballistic work >=27J; Welding rod chemical composition: C≤0.10%, Mn:0.40-0.80%, Si≤0.75%, S≤0.010%, P≤0.010%, Ni:2.50-3.50%, Cr≤0.50%, Mo≤0.01%, V≤0.01%, surplus is Fe and inevitable impurity; SMAW groove adopts asymmetric X type groove; Welding condition: welding current 140-180A, weldingvoltage 24-26V, speed of welding 10-26cm/min, thermal weld stress amount 8-20kJ/cm; Welding point of the present invention has excellent comprehensive mechanical property, practical.
Description
Technical field
The invention belongs to ferrous materials welding field, relate to a kind of electric arc welding technique, specifically a kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel.
Background technology
Atmospheric corrosion is one of main damage form of ferrous materials.According to statistics, because of corrosion, the ferrous materials of loss accounts for 1/6 of steel output every year in the whole world.China 2008 is because corroding the direct and consequential damage that causes up to 1.2-2 trillion yuan, and the expense produced because of erosion control measures also account for suitable ratio in construction investment.If application corrosion science technological know-how in modern age and anticorrosion technique, the economic loss of corrosion can reduce 25%-30%.Although adopt stainless steel effectively can prevent corrosion, its cost is generally difficult to bear, and its welding, processing and combination property also cannot meet the needs of various engineering.
In coastal air, due to brushing of sea wind, in fog, sodium chloride particle can be mingled with, make in air containing chlorion.The feature of littoral environment high temperature, high humidity; contribute to the deposition of chlorion at surface of steel plate, by the inside of alternation of wetting and drying effect chloride permeability to steel plate, result in the premature failure of steel construction; because application, maintenance cost are very high, the effect of chlorion causes the attention of domestic and international researcher.Therefore, exempt from application weather resisting steel to arise at the historic moment.Adopt weathering steel without initial stage application and safeguard application, life cycle cost is low; Without the release of organic volatile, health environment-friendly; Its rusty scale color changes in time, finally becomes dark brown, coordinates mutually with around natural environment.Corrosion resistance can extend the service life of steel construction, high strength can make thickness of steel product thinning, weight saving, is widely used in rolling stock, bridge, building, container, power transmission tower, television tower, engineering machinery, pipeline, automobile, agricultural machinery, boats and ships, boiler, container, road guard, environment sanitation facility etc.
In order to adapt to China current to resistance to coastal region atmospheric corrosion steel in the urgent need to, develop the excellent resistance to coastal region atmospheric corrosion steel plate of mechanical property and solve its welding key technology, significant for the kind enriching China's Coastal Areas construction steel.Because coastal region Service Environment is very severe, except bearing structural stress, be also subject to the hot and humid impact waiting coastal region environment, this has good intensity and toughness coupling with regard to needing the welding point of resistance to coastal region atmospheric corrosion steel.Therefore, for preventing the embrittlement issue of resistance to coastal region atmospheric corrosion steel welded joint, Proper Match welding material, optimizing welding process parameter are key problem in technology.
Summary of the invention
Technical problem to be solved by this invention: how to ensure welding point yield strength >=415MPa, tensile strength Rm520-680MPa, percentage elongation A >=22% ,-40 DEG C of impact flexibility are not less than the design requirement of 27J, and welding point has excellent mechanical property.
The technical scheme that the present invention solves above technical problem is:
A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel, adopt the welding base metal that 16-50mm is thick, the composition of welding base metal and percentage by weight are: C:0.06-0.12%, Mn:0.95-1.10%, Si:0.45-0.65%, S :≤0.030%, P :≤0.025%, Ni:2.50-3.50%, Cr:0.20-0.55%, surplus is Fe and inevitable impurity; Yield strength >=the 415MPa of described welding base metal, tensile strength Rm520-680MPa, percentage elongation A >=22% ,-40 DEG C of Impact energy Ak v >=27J;
Welding rod chemical composition and percentage by weight are: C:0.06%, Mn:0.46%, Si:0.46%, S :≤0.003%, P :≤0.008%, Ni:3.05%, Cr :≤0.36%, and surplus is Fe and inevitable impurity;
SMAW groove adopts asymmetric X type groove, and front groove and the backing groove angle of asymmetric X type groove are 50 °-65 °, and root face is 0-2mm, and groove fit-up gap is 1-2mm;
Welding condition: welding current 140-150A, weldingvoltage 24-26V, speed of welding 24-26cm/min, thermal weld stress amount 8-10kJ/cm; Adopt multi-pass welding bar electric arc welding to condition of equivalent thickness combined steel plate banjo fixing butt jointing, its weld seam interlayer temperature controls at 20-200 DEG C.
The present invention adopts suitable welding base metal, welding material and welding procedure, welding point yield strength >=415MPa can be ensured, tensile strength Rm520-680MPa, percentage elongation A >=22%,-40 DEG C of impact flexibility are not less than the design requirement of 27J, and welding point has excellent mechanical property.
The chemical composition of the present invention to welding base metal and welding rod is selected, coordinate rational welding condition, thus prevent weld metal to produce thick pro-eutectoid ferrite, stop coarse grain zone to produce thick granular bainite and even produce Widmannstatten structure, improve welding point low-temperature impact toughness; Simultaneously, can prevent from further, near molten bath (weld seam), superheating phenomenon occurs, thus stop this region grain growth alligatoring serious, in weld seam primary solidification structure, prevent the generation of thick column crystal and tree power crystalline substance, thus reduce the sensitiveness of thermal crack(ing; In weld seam secondary solidification structure, form more low-carbon martensite, thus make welding point have higher intensity and certain plasticity and toughness, obtain beyond thought technique effect.
The obdurability of welding point is by the conditional decision such as composition and Thermal Cycle, and different welding procedures can cause Seam and heat effected zone to produce different tissues, thus obtains different toughness and tenacities.Thermal weld stress amount is the key affecting welding point low-temperature impact toughness.Under larger thermal weld stress condition, weld metal produces thick pro-eutectoid ferrite, and coarse grain zone produces thick granular bainite and even produces Widmannstatten structure, and this is the main cause that welding point low-temperature impact toughness reduces.Although less heat input can not the low-temperature flexibility of strong deterioration welding point, the welding efficiency of little heat input is low.The present invention sets thermal weld stress amount 8-10kJ/cm, can ensure to obtain reliable welding point.
Welding current is moderate, when welding current is excessive, and defects such as easily causing weldering to leak, burn, crack, and the distortion of weldment is large, splashes very large in welding process; When welding current is too small, easily cause the defects such as lack of penetration, incomplete fusion, slag inclusion and appearance of weld are bad.Arc voltage must coordinate with welding current to be selected, and when usual electric current is less, arc voltage is lower; When welding current is larger, arc voltage is higher.Under certain condition of welding current and welding arc voltage, along with speed of welding increases, weld width and fusion penetration will be made to reduce.The present invention sets welding current 140-150A, weldingvoltage 24-26V, speed of welding 24-26cm/min, can ensure to obtain reliable welding point.
After the invention process, the mechanical property at resistance to coastal region atmospheric corrosion steel welded joint position is: tensile strength Rm: >=520MPa, and fracture position is mother metal; Joint face is curved and carry on the back curved d=4a, and 180 ° qualified; Outer-40 DEG C, 2mm, 5mm place Impact energy Ak v >=27J of the weld seam on steel plate top layer, melt run and line.
The technical scheme that the present invention limits further is:
The SMAW welding procedure of aforesaid resistance to coastal region atmospheric corrosion steel, wherein core diameter Φ 3.2mm or Φ 4.0mm, welding rod tensile strength >=520MPa.
The invention has the beneficial effects as follows: (1) the present invention meets the welding key technology of the thick Q415NH-BH of the 16-50mm resistance to coastal region atmospheric corrosion steel of weld joint mechanical high comprehensive performance under cryogenic conditions.Strength of welded joint is not less than the design requirement that mother metal and-40 DEG C of impact flexibility are not less than 27J to adopt suitable welding base metal, welding material and welding procedure to ensure, welding point has excellent mechanical property.(2) present invention achieves the welding procedure of resistance to coastal region atmospheric corrosion 16mm thick Q415NH-BH steel plate banjo fixing butt jointing SMAW manufacture process, in implementation process, the effect that welding joint mechanical property is excellent can be reached, practical, energy-efficient, be applicable to large-scale coastal region construction project and apply.
Accompanying drawing explanation
Fig. 1 is the X-type slope type figure of the embodiment of the present invention 1.
Fig. 2 is the X-type slope type figure of the embodiment of the present invention 2.
Detailed description of the invention
Embodiment 1
A SMAW welding procedure for the thick Q415NH-BH of the 16mm resistance to coastal region atmospheric corrosion steel of weld joint mechanical high comprehensive performance, comprises the following steps:
Adopt the thick Q415NH-BH of the 16mm resistance to coastal region atmospheric corrosion steel that the obdurability of yield strength >=415MPa is excellent, test piece for welding is combined as 16mm+16mm, and test plate (panel) is of a size of 600mm (length) × 200mm (wide) × 16mm (thick);
The composition of described welding base metal and percentage by weight are: C:0.09%, Mn:0.95%, Si:0.45%, S:0.030%, P:0.025%, Ni:2.50%, Cr:0.20%, and surplus is Fe and inevitable impurity; Yield strength >=the 415MPa of welding base metal, tensile strength Rm520-680MPa, percentage elongation A >=22% ,-40 DEG C of Impact energy Ak v >=27J;
The welding material of coupling:
Welding rod chemical composition and percentage by weight are: C:0.06%, Mn:0.46%, Si:0.46%, S :≤0.003%, P :≤0.008%, Ni:3.05%, Cr :≤0.36%, and surplus is Fe and inevitable impurity;
Core diameter is Φ 4.0mm;
SMAW groove adopts asymmetric X type groove, and as shown in Figure 1, front groove and backing groove angle are 55 °-60 °, and root does not stay root face, and groove fit-up gap is 1-2mm.
Welding condition: welding current 148-152A, weldingvoltage 24-26V, speed of welding 24-26cm/min, thermal weld stress amount 8-10kJ/cm; Be that 16mm+16mm combined steel plate banjo fixing butt jointing adopts multilayer multiple tracks gas to protect weldering welding to thickness, weld seam interlayer temperature controls at 150 DEG C.
After the welding method of above-described embodiment 1 carries out SMAW welding to the thick Q415NH-BH of 16mm resistance to coastal region atmospheric corrosion steel, the mechanical property of Welded Joints detects.Stretching and the bending property of welding point are as shown in table 1, and impact property is as shown in table 2.
The stretching of table 1 welding point and bend property
The impact property of table 2 welding point
Embodiment 2
A SMAW welding procedure for the thick Q415NH-BH of the 50mm resistance to coastal region atmospheric corrosion steel of weld joint mechanical high comprehensive performance, comprises the following steps:
Adopt the thick Q415NH-BH of the 16mm resistance to coastal region atmospheric corrosion steel that the obdurability of yield strength >=415MPa is excellent, test piece for welding is combined as 50mm+50mm, and test plate (panel) is of a size of 600mm (length) × 200mm (wide) × 50mm (thick);
The composition of welding base metal and percentage by weight are: C:0.12%, Mn:1.10%, Si:0.65%, S:0.010%, P:0.015%, Ni:3.50%, Cr:0.55%, and surplus is Fe and inevitable impurity; Yield strength >=the 415MPa of welding base metal, tensile strength Rm520-680MPa, percentage elongation A >=22% ,-40 DEG C of Impact energy Ak v >=27J;
The welding material of coupling:
Welding rod chemical composition and percentage by weight are: C:0.06%, Mn:0.46%, Si:0.46%, S:0.001%, P:0.001%, Ni:3.05%, Cr:0.26%, and surplus is Fe and inevitable impurity;
Core diameter is Φ 4.0mm;
SMAW groove adopts asymmetric X type groove, and as shown in Figure 2, front groove and backing groove angle are 55 °-60 °, and root root face is 2mm, and groove fit-up gap is 1-2mm.
Welding condition: welding current 160-180A, weldingvoltage 24-26V, speed of welding 10-25cm/min, thermal weld stress amount 16-20kJ/cm; Be that 50mm+50mm combined steel plate banjo fixing butt jointing adopts multilayer multiple tracks gas to protect weldering welding to thickness, weld seam interlayer temperature controls at≤200 DEG C.
After the welding method of above-described embodiment 1 carries out SMAW welding to the thick Q415NH-BH of 50mm resistance to coastal region atmospheric corrosion steel, the mechanical property of Welded Joints detects.Stretching and the bending property of welding point are as shown in table 3, and impact property is as shown in table 4.
The stretching of table 3 welding point and bend property
The impact property of table 4 welding point
Visible, the comprehensive mechanical property of the welding point that embodiment 1 and 2 obtains is excellent, reaches good obdurability coupling.Welding point tensile strength Rm >=520MPa ,-40 DEG C of ballistic work monodrome kv2 >=27J, joint face is curved and carry on the back curved d=4a, and 180 ° qualified.And the process embodiment that this patent provides is simple, and applicability is very strong.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (2)
1. a SMAW welding procedure for resistance to coastal region atmospheric corrosion steel, is characterized in that:
Adopt the welding base metal that 16-50mm is thick, the composition of described welding base metal and percentage by weight are: C:0.09-0.12%, Mn:0.95-1.10%, Si:0.45-0.65%, S :≤0.030%, P :≤0.025%, Ni:2.50-3.50%, Cr:0.20-0.55%, surplus is Fe and inevitable impurity; Yield strength >=the 415MPa of described welding base metal, tensile strength Rm520-680MPa, percentage elongation A >=22% ,-40 DEG C of Impact energy Ak v >=27J;
Welding rod chemical composition and percentage by weight are: C:0.06%, Mn:0.46%, Si:0.46%, S :≤0.003%, P :≤0.008%, Ni:3.05%, Cr:026-0.36%, and surplus is Fe and inevitable impurity;
SMAW groove adopts asymmetric X type groove, and front groove and the backing groove angle of asymmetric X type groove are 50 °-65 °, and root face is 0-2mm, and groove fit-up gap is 1-2mm;
Welding condition: welding current 140-150A, weldingvoltage 24-26V, speed of welding 24-26cm/min, thermal weld stress amount 8-10kJ/cm; Adopt multi-pass welding bar electric arc welding to condition of equivalent thickness combined steel plate banjo fixing butt jointing, its weld seam interlayer temperature controls at 20-200 DEG C.
2. the SMAW welding procedure of resistance to coastal region atmospheric corrosion steel as claimed in claim 1, is characterized in that: core diameter Φ 3.2mm or Φ 4.0mm, welding rod tensile strength >=520MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211269.4A CN104002014B (en) | 2014-05-19 | 2014-05-19 | A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211269.4A CN104002014B (en) | 2014-05-19 | 2014-05-19 | A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104002014A CN104002014A (en) | 2014-08-27 |
| CN104002014B true CN104002014B (en) | 2016-01-27 |
Family
ID=51363078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410211269.4A Active CN104002014B (en) | 2014-05-19 | 2014-05-19 | A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104002014B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475920A (en) * | 2014-11-13 | 2015-04-01 | 南京钢铁股份有限公司 | Electro-gas welding method suitable for steel plate 50-80mm in thickness |
| CN105033503B (en) * | 2015-08-17 | 2017-03-01 | 武汉铁锚焊接材料股份有限公司 | One kind is used for corrosion-resisting steel welding welding rod |
| CN111515493B (en) * | 2020-04-16 | 2022-03-01 | 南京钢铁股份有限公司 | Welding rod arc welding method suitable for Ni-saving type low-temperature steel |
| CN112372120A (en) * | 2020-12-03 | 2021-02-19 | 南京钢铁股份有限公司 | Shielded metal arc welding process suitable for 1000MPa grade high-strength steel |
| CN112935627A (en) * | 2021-02-07 | 2021-06-11 | 天津市金桥焊材集团股份有限公司 | Consumable electrode gas shielded solid welding wire for welding refractory weathering steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU593867A1 (en) * | 1976-05-05 | 1978-02-25 | Предприятие П/Я А-1944 | Wire electrode composition |
| CN1800428A (en) * | 2005-01-07 | 2006-07-12 | 中国科学院金属研究所 | Economy type weathering-resistant steel |
| CN101774059A (en) * | 2009-12-29 | 2010-07-14 | 广东省工业设备安装公司 | Welding process of 10CrMoAl seawater corrosion resistant steel tube |
| CN102837105A (en) * | 2012-09-27 | 2012-12-26 | 中铁山桥集团有限公司 | Welding method for Q345qDNH weather-resisting steel for bridge |
| CN103752998A (en) * | 2014-01-08 | 2014-04-30 | 合肥紫金钢管有限公司 | Method for manufacturing high-weather-resistance multi-wire submerged-arc welded steel pipes for marine environments |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE553225T1 (en) * | 2004-11-12 | 2012-04-15 | Posco | PRODUCTION PROCESS FOR A STEEL WITH EXCELLENT WEATHER RESISTANCE IN MARINE ATMOSPHERES |
-
2014
- 2014-05-19 CN CN201410211269.4A patent/CN104002014B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU593867A1 (en) * | 1976-05-05 | 1978-02-25 | Предприятие П/Я А-1944 | Wire electrode composition |
| CN1800428A (en) * | 2005-01-07 | 2006-07-12 | 中国科学院金属研究所 | Economy type weathering-resistant steel |
| CN101774059A (en) * | 2009-12-29 | 2010-07-14 | 广东省工业设备安装公司 | Welding process of 10CrMoAl seawater corrosion resistant steel tube |
| CN102837105A (en) * | 2012-09-27 | 2012-12-26 | 中铁山桥集团有限公司 | Welding method for Q345qDNH weather-resisting steel for bridge |
| CN103752998A (en) * | 2014-01-08 | 2014-04-30 | 合肥紫金钢管有限公司 | Method for manufacturing high-weather-resistance multi-wire submerged-arc welded steel pipes for marine environments |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104002014A (en) | 2014-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104070270B (en) | A kind of wire submerged arc weldering welding procedure of resistance to coastal region atmospheric corrosion steel | |
| CN101862887B (en) | Method of submerged-arc welding of thick sheet S355NL for low-temperature wind tower | |
| CN104002014B (en) | A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel | |
| CN102837105B (en) | Welding method for Q345qDNH weather-resisting steel for bridge | |
| CN101362257B (en) | Electric welding rod for hand welding X80 grade steel oil, gas transmission pipe | |
| CN103286427B (en) | Method for welding Q500qE ultralow-carbon bainite steel for bridge | |
| CN103521886B (en) | For the welding method of stainless steel single face welding and double face shaping | |
| CN101513695B (en) | Welding method of Q420qE grade ultra-low-carbon bainite steel for bridges | |
| CN101537549B (en) | High-strength and high-toughness automatic submerged arc welding wire with weathering resistance | |
| CN103567613B (en) | A kind of stainless steel clad plate tank car welding procedure | |
| CN105252122A (en) | Welding method for high-performance weather-resistant steel which is at Q345qENH-Q420qENH level and used for bridges | |
| CN102049599B (en) | Submerged-arc welding method for ultrahigh-strength steel plate F460Z for ocean structure | |
| CN104057186B (en) | A kind of welding method of UHV transmission steel tube tower Q690 high-strength steel steel pipe | |
| CN102873439B (en) | Submerged arc welding process for E36 oceaneering steel with thickness being 80mm | |
| CN101259562A (en) | Welding technique for rolled steel | |
| CN102922083B (en) | A kind of welding method of nuclear grade stainless steel | |
| CN102101210A (en) | Welding method of high-strength steel for pressure steel pipe of 610MPa hydropower station | |
| CN102009252A (en) | Vertical position welding process method of steel for high-strength hull structure | |
| CN102744502A (en) | Wire filling tungsten electrode argon-arc welding process for TA15 titanium alloy and austenitic stainless steel | |
| CN101254575A (en) | X80 pipeline steel submerged arc welding wire | |
| CN110076416A (en) | A kind of combined welding method of the bridge 08Ni3DR of resistance to sea atmosphere corrosion steel | |
| CN101683701A (en) | Welding technique of submerged arc welding of mechanical controlled rolling and controlled cooling structural steel | |
| CN102009253A (en) | Transverse welding technical method for high-strength steel for ship structure | |
| CN103008912B (en) | The welding rod of X100 pipe line steel manual welding and production method thereof | |
| CN104070271B (en) | 15Cr1Mo1V valve body and WB36 pipe arrangement different steel weld method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |