CN111360381A - Welding method for stainless steel composite plate for container - Google Patents
Welding method for stainless steel composite plate for container Download PDFInfo
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- CN111360381A CN111360381A CN202010243005.2A CN202010243005A CN111360381A CN 111360381 A CN111360381 A CN 111360381A CN 202010243005 A CN202010243005 A CN 202010243005A CN 111360381 A CN111360381 A CN 111360381A
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- steel composite
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- 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
- B23K9/18—Submerged-arc welding
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
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- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a welding method of a stainless steel composite plate for a container, wherein the stainless steel composite plate is formed by compounding a Q345R base layer and a 316L stainless steel cladding layer; the stainless steel composite plate adopts an X-shaped welding groove; welding the base layer by adopting a submerged arc automatic welding filling method, and then welding the transition layer by adopting gas shielded welding and capping. Can obviously improve the quality of the welding joint of the stainless steel composite plate for the container, and has excellent welding performance.
Description
Technical Field
The invention belongs to the technical field of steel material welding, and particularly relates to a welding method of a stainless steel composite plate.
Background
The stainless steel composite steel plate is used as a resource-saving product, so that the consumption of precious metals can be reduced, the construction cost is greatly reduced, the perfect combination of low cost and high performance is realized, the characteristic advantages of the two materials are fully exerted, and the stainless steel composite steel plate has the characteristics of corrosion resistance, cleanness, diamagnetism, long service life and the like of stainless steel guaranteed materials; but also has the characteristics of good weldability, formability, drawability, heat conductivity and high strength of carbon steel, and is a multifunctional material.
In order to ensure that the stainless steel composite plate does not lose the original comprehensive performance due to welding, a proper welding process needs to be designed to ensure various performances of a welding joint.
Disclosure of Invention
The invention aims to provide a welding process of a stainless steel composite plate for a container, which improves the quality of a welding joint of the stainless steel composite plate for the container, reduces the production cost, improves the working environment of welders and improves the working efficiency.
The invention specifically adopts the following technical scheme:
a welding method of stainless steel composite plates for containers is characterized by comprising the following steps:
the stainless steel composite plate is formed by compounding a Q345R base layer and a 316L stainless steel coating layer;
the stainless steel composite plate adopts an X-shaped groove with a truncated edge;
welding a base layer by adopting a submerged arc automatic welding filling method, welding a transition layer by adopting gas shielded welding, and covering;
the submerged automatic arc welding of the base layer adopts a CHW-S9 welding wire and a CHF101 welding flux for welding, the current intensity is 480-520A, the arc voltage is 30-32V, and the welding speed is 48-50 cm/min;
the gas shielded welding of the transition layer adopts GES-309MOL welding wires, the current intensity is 80-130A, the arc voltage is 22-26V, and the welding speed is 26-30 cm/min;
and GES-316L welding wires are adopted for cover surface welding, the current intensity is 80-130A, the arc voltage is 22-26V, and the welding speed is 13-15 cm/min.
Aiming at the stainless steel composite plate formed by compounding the base layer of Q345R and 316L stainless steel, the base layer is welded by adopting a submerged arc automatic welding filling method according to the welding groove, and then the transition layer is welded by adopting gas shielded welding and the cover surface is carried out, so that the welding joint quality of the stainless steel composite plate for the container can be obviously improved, and the stainless steel composite plate has excellent welding performance.
Drawings
FIG. 1 is a schematic view of a non-stepped groove;
FIG. 2 is a schematic view of a stepped groove.
Detailed Description
The technical solution of the present invention is further described in detail below.
The stainless steel composite plate is formed by compounding a base layer of Q345R and a composite layer of 316L stainless steel, the base layer is welded by a submerged arc automatic welding filling method in the welding process, and then the transition layer is welded by gas shielded welding and the cover surface is covered. The method is suitable for welding stainless steel composite plates with the thickness of the base layer being more than or equal to 20 mm.
The stainless steel composite board adopts an X-shaped welding groove, the groove angle is 30 +/-5 degrees, and the truncated edge size is 4 +/-1 mm.
The welding of the base layer adopts a submerged automatic welding and filling method; the submerged automatic arc welding adopts a CHW-S9 welding wire and CHF101 flux for welding, the current intensity is 480-520A, the arc voltage is 30-32V, and the welding speed is 48-50 cm/min; adopting GES-309MoL (phi 1.2) welding wires when welding the transition layer by gas shielded welding, wherein the current intensity is 80-130A, the arc voltage is 22-26V, and the welding speed is 26-30 cm/min; and welding a GFS-316L (phi 1.2) welding wire at the cover surface welding speed of 26-30 cm/min, wherein the current intensity is 80-130A, the arc voltage is 22-26V.
Preheating is not needed before welding, the temperature between channels is 60-160 ℃, and back gouging treatment is carried out before back side welding.
The gas shielded welding adopts argon protection, the purity of the argon is more than 99.5%, and the flow is 15-20L/min.
Example 1
The groove design is carried out on the stainless steel composite plate, and fig. 1 shows an X-shaped welding groove (without steps) adopted by the invention, wherein the groove angle is 30 degrees, the size of a truncated edge is 4mm, and the horizontal butt welding is carried out under the conditions that the temperature is 16 ℃ and the humidity is 40%. And during welding, a submerged automatic arc welding filling method is adopted for base layer welding.
TABLE 1 welding Process parameters
The results of the mechanical properties and the processing properties of the welded joints after the welding were completed are shown in tables 2 to 5.
TABLE 2 joint tensile results
| Sample number | Sample size/mm | Breaking load/N | Rm/MPa | Fracture site |
| 11 | 39×25×380 | / | 561 | Base material |
| 12 | 39×25×380 | / | 567 | Base material |
TABLE 3 results of joint bending test
| Sample number | Sample size/mm | Type of sample | Bending condition | Test results |
| 11 | 39×30×360 | Inner bend | D＝4a.180° | Intact |
| 12 | 39×30×360 | Inner bend | D＝4a.180° | Intact |
| 13 | 39×30×360 | Outer bend | D＝4a.180° | Intact |
| 14 | 39×30×360 | Outer bend | D＝4a.180° | Intact |
| 15 | 39×10×360 | Lateral bending | D＝4a.180° | Intact |
| 16 | 39×10×360 | Lateral bending | D＝4a.180° | Intact |
TABLE 4 Low temperature impact test results (J) for joints
TABLE 5 weld joint drop test
Example 2
By adopting the method, the groove design is carried out on the stainless steel composite plate, figure 2 shows an X-shaped welding groove with a transition step, an inclined angle is arranged at the edge of the groove on the cladding side of the groove to form the transition step, the depth of the inclined angle is equal to the thickness of the cladding, the angle of the groove is 30 degrees, the size of the truncated edge is 4mm, and the butt welding is carried out in a horizontal position under the conditions that the temperature is 20 ℃ and the humidity is 40 percent. During welding, a submerged automatic arc welding filling method is adopted for base layer welding;
the welding parameters were the same as in example 1.
After welding the S31603+ Q345R rolled stainless steel composite steel plate with the thickness of (4+34) mm, after the welded joint is subjected to tests such as stretching, bending, impacting, falling weight and the like, all the performances are qualified, compared with a base layer and a composite layer, the composite steel plate has better mechanical properties and process properties, ultrasonic flaw detection is carried out on the joint 24 hours after welding, and the flaw detection result reaches the I-grade requirement according to the NB/T47013.3 standard. The macro morphology of the welding joint shows that the welding joint of the composite steel plate is well combined, no defects such as cavities, cracks and the like are found between a fusion line and a base layer, between a transition layer and a coating layer, and the welding quality of the composite steel plate is good.
And carrying out a sulfuric acid-copper sulfate intergranular corrosion test on the multilayer of the welding joint. The welded joint was subjected to the intergranular corrosion test without being sensitized. The test result shows that after the sample is subjected to the intercrystalline corrosion test, the positions of the welding line and the fusion line are clear, and the base material is basically not corroded. And bending the sample by using a pressure head with the diameter of 5mm, wherein the bending angle is 180 degrees. The test sample has no crack after being bent, and the intergranular corrosion test is qualified.
And (3) carrying out a royal water intergranular corrosion test on the welding joint, and carrying out microscopic detection on the welding joint before and after intergranular corrosion. The result shows that the interface between the welding line and the base material is clear before intergranular corrosion, the austenite structure of the base material is invisible, and the welding line is obviously eroded to form an austenite and high-temperature ferrite structure. After intergranular corrosion, the base material is not corroded, and the welding seam and the structure of a heat affected zone are visible and are similar to the structure of a sample before intergranular corrosion. Therefore, the welding joint structure is not changed before and after intergranular corrosion, and the welding joint has good intergranular corrosion resistance.
After the welded joint is subjected to flaw detection, stretching, impacting, drop hammer, bending and coating intergranular corrosion inspection, all the performances are qualified, and the rolled stainless steel composite steel plate has good welding performance.
Claims (6)
1. A welding method of stainless steel composite plates for containers is characterized by comprising the following steps:
the stainless steel composite plate is formed by compounding a Q345R base layer and a 316L stainless steel coating layer;
the stainless steel composite plate adopts an X-shaped groove with a truncated edge;
welding a base layer by adopting a submerged arc automatic welding filling method, welding a transition layer by adopting gas shielded welding, and covering;
the submerged automatic arc welding of the base layer adopts a CHW-S9 welding wire and a CHF101 welding flux for welding, the current intensity is 480-520A, the arc voltage is 30-32V, and the welding speed is 48-50 cm/min;
the gas shielded welding of the transition layer adopts GES-309MOL welding wires, the current intensity is 80-130A, the arc voltage is 22-26V, and the welding speed is 26-30 cm/min;
and GES-316L welding wires are adopted for cover surface welding, the current intensity is 80-130A, the arc voltage is 22-26V, and the welding speed is 13-15 cm/min.
2. A welding method of stainless steel composite plates for containers according to claim 1, characterized in that preheating is not needed before welding, the temperature between channels is 60-160 ℃, and back-gouging treatment is performed before back-side welding.
3. A welding method of stainless steel composite plates for a container according to claim 1, characterized in that the gas shielded welding adopts argon shielding, the purity of the argon is more than 99.5%, and the flow rate is 15-20L/min.
4. A container stainless steel composite plate welding method according to claim 1, wherein the bevel angle is 30 ± 5 ° and the size of the truncated edge is 4 ± 1 mm.
5. A welding method of stainless steel composite plates for a container as claimed in claim 1, wherein the backing welding of the base layer is performed by using a CHW-S9 welding wire and a CHF101 welding flux, the current intensity is 380-420A, the arc voltage is 28-30V, and the welding speed is 48-50 cm/min.
6. A stainless steel composite plate welding method for a container according to claim 1, wherein an inclined angle is arranged at the bevel edge on the cladding side of the X-shaped groove to form a transition step, and the depth of the inclined angle is equal to the thickness of the cladding.
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| CN202010243005.2A CN111360381A (en) | 2020-03-31 | 2020-03-31 | Welding method for stainless steel composite plate for container |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439982A (en) * | 2020-11-16 | 2021-03-05 | 四川石油天然气建设工程有限责任公司 | X-shaped groove welding process of corrosion-resistant alloy composite pipe |
| CN113878204A (en) * | 2021-10-18 | 2022-01-04 | 唐禹明 | Welding method of stainless steel composite plate |
| CN114769808A (en) * | 2022-04-28 | 2022-07-22 | 湖南华菱湘潭钢铁有限公司 | Welding method for Q345qE +316L composite board |
| CN114939708A (en) * | 2022-03-09 | 2022-08-26 | 南京钢铁股份有限公司 | Argon arc welding method for 2205 stainless steel composite plate for ship |
| CN116329828A (en) * | 2023-05-25 | 2023-06-27 | 南京斯迈柯特种金属装备股份有限公司 | Pressure container butt joint groove structure, welding device and welding method |
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| CN101797667A (en) * | 2009-12-24 | 2010-08-11 | 洛阳双瑞金属复合材料有限公司 | Welding method of deck structure of stainless steel compound plate for railway steel bridge |
| CN103567613A (en) * | 2013-11-14 | 2014-02-12 | 南车眉山车辆有限公司 | Welding process for tank car with stainless steel composite plate |
| CN104191072A (en) * | 2014-08-14 | 2014-12-10 | 梧州市旺捷机械制造有限公司 | Welding method of stainless steel clad plate |
| CN105127566A (en) * | 2015-09-29 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Full penetration welding method of large-thickness carbon steel and stainless steel clad plate |
| CN110303263A (en) * | 2019-07-05 | 2019-10-08 | 南京钢铁股份有限公司 | A kind of bridge stainless steel clad plate welding method |
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Patent Citations (5)
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| CN101797667A (en) * | 2009-12-24 | 2010-08-11 | 洛阳双瑞金属复合材料有限公司 | Welding method of deck structure of stainless steel compound plate for railway steel bridge |
| CN103567613A (en) * | 2013-11-14 | 2014-02-12 | 南车眉山车辆有限公司 | Welding process for tank car with stainless steel composite plate |
| CN104191072A (en) * | 2014-08-14 | 2014-12-10 | 梧州市旺捷机械制造有限公司 | Welding method of stainless steel clad plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439982A (en) * | 2020-11-16 | 2021-03-05 | 四川石油天然气建设工程有限责任公司 | X-shaped groove welding process of corrosion-resistant alloy composite pipe |
| CN113878204A (en) * | 2021-10-18 | 2022-01-04 | 唐禹明 | Welding method of stainless steel composite plate |
| CN114939708A (en) * | 2022-03-09 | 2022-08-26 | 南京钢铁股份有限公司 | Argon arc welding method for 2205 stainless steel composite plate for ship |
| CN114769808A (en) * | 2022-04-28 | 2022-07-22 | 湖南华菱湘潭钢铁有限公司 | Welding method for Q345qE +316L composite board |
| CN116329828A (en) * | 2023-05-25 | 2023-06-27 | 南京斯迈柯特种金属装备股份有限公司 | Pressure container butt joint groove structure, welding device and welding method |
| CN116329828B (en) * | 2023-05-25 | 2024-02-06 | 南京斯迈柯特种金属装备股份有限公司 | Pressure container butt joint groove structure, welding device and welding method |
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