CN107999927A - A kind of straight seam welding method of water heater liner - Google Patents
A kind of straight seam welding method of water heater liner Download PDFInfo
- Publication number
- CN107999927A CN107999927A CN201711285565.9A CN201711285565A CN107999927A CN 107999927 A CN107999927 A CN 107999927A CN 201711285565 A CN201711285565 A CN 201711285565A CN 107999927 A CN107999927 A CN 107999927A
- Authority
- CN
- China
- Prior art keywords
- welding
- water heater
- heater liner
- stainless steel
- straight seam
- 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.)
- Pending
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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- 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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- 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
- B23K9/0253—Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The present invention discloses a kind of straight seam welding method of water heater liner, for welding the stack shell of SUS444 stainless steel inner containers, including weld port pretreatment and welding；The weld port pretreatment includes：Stainless steel materials are rolled into cylinder, then soak cleaning is carried out to rolling two of rear plate opposite edges；The welding includes the following steps：Cylinder after will wind up is fixed on gauge, makes two opposite edge docking of above-mentioned plate；Then argon arc welding welding is carried out using ER316L welding wires in joint.This method uses ER316L welding wires, is closer to SUS444 material compositions, can effectively improve the resistance to corrosion of weld seam, prevents weld seam leak.
Description
Technical field
The present invention relates to a kind of straight seam welding method of water heater liner, belong to welding technology field.
Background technology
The material that general water heater uses is that carbon steel adds enamel to handle liner, and additional anodic magnesium rod is arranged as anti-corrosion protection
Apply, the principle of anodic magnesium rod is to supplement substantial amounts of electronics to need metal to be protected, makes to be protected metal generally in electronics mistake
Surplus state makes metal surface each point reach same negative potential.
Magnesium rod largely reduces the corrosion of water heater liner, but magnesium rod also brings the defects of a large amount of：Magnesium
An extension of the rod as sacrificial anode, its service life are limited；Installing, magnesium rod have to liner and heating tube into
Row insulation processing, installation check are replaced inconvenient；To liner heating tube overprotection；The other impurities of magnesium rod alloy are easily formed very
More floating materials, block nozzle, influence to use.
For this reason, patent《A kind of water heater liner》(the patent No.：201220350502.3) a kind of water heater liner is provided,
Use SUS444 stainless steel inner containers instead, itself has very strong resistance to corrosion, without magnesium rod, checks and replaces conveniently.But
SUS444 stainless steels are higher to welding process requirement, leak, electrochemical corrosion etc. easily occur.
The content of the invention
The technical problem to be solved in the present invention is：Existing SUS444 stainless steel inner containers welding difficulty is high, easily occur leak,
The problems such as weld corrosion.
To solve technical problem, there is provided a kind of straight seam welding method of water heater liner, reduces welding difficulty, weld seam resists
The advantages that corrosive power is strong, antileaking.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of straight seam welding method of water heater liner, for welding the stack shell of SUS444 stainless steel inner containers, including welding
Port pre-processes and welding；
The weld port pretreatment includes：Stainless steel materials are rolled into cylinder, then two to rolling rear plate opposite
Edge carry out soak cleaning；
The welding includes the following steps：Cylinder after will wind up is fixed on gauge, make two of above-mentioned plate it is opposite
Edge docking；Then argon arc welding welding is carried out using ER316L welding wires in joint.
Preferably, the tungsten electrode that the argon arc welding uses is WC20 Φ 3.2mm.
Preferably, the current polarity of the argon arc welding welding uses DC reverse connection, and current strength is in 195~245A scopes
It is interior.
Preferably, the thickness of the stainless steel materials is 2.5mm, and the current strength is in the range of 195~205A.
Preferably, the thickness of the stainless steel materials is 3.0mm, and the current strength is in the range of 235~245A.
Preferably, a diameter of 1.2mm of the ER316L welding wires, speed of welding is in the range of 1.6~2.5mm/s, wire feed
Speed is in 15~30mm/s.
Preferably, the thickness of the stainless steel materials is 2.5mm, and the wire feed rate is in 15~25mm/s.
Preferably, the thickness of the stainless steel materials is in 3.0mm, and the wire feed rate is in 20~30mm/s.
Preferably, the arc protecting atmosphere of the argon arc welding uses 99.99% argon gas, and gas flow is in 8~10L/
min；Root protective gas uses 99.99% argon gas, and gas flow is in 3~5L/min.
The beneficial effects of the invention are as follows：Using ER316L welding wires, it is closer to SUS444 material compositions, weldering can be effectively improved
The resistance to corrosion of seam, prevents weld seam leak.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the SUS444 stainless steel materials schematic diagrames for making liner stack shell；
Fig. 2 is rolled up the cylinder schematic diagram come；
Fig. 3 is rolled up rear cylinder two edges docking schematic diagram；
Fig. 4 is stack shell weld structure diagram.
Reference numeral：10 ＇, SUS444 stainless steel materials；10th, cylinder；11st, first edge；12nd, second edge；20th, weld
Point.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
One embodiment of the straight seam welding method of water heater liner of the present invention, as shown in Figs 1-4, the straight seam welding method
For welding the stack shell of SUS444 stainless steel inner containers, including weld port pretreatment and welding.Wherein, weld port pretreatment bag
Include：10 ＇ of SUS444 stainless steel materials as shown in Figure 1 is rolled into cylinder 10 as shown in Figure 2, then again to rolling rear plate
Two opposite edges：First edge 11 and second edge 12, carry out soak cleaning.Welding then includes the following steps：It will wind up
Cylinder 10 afterwards is fixed on gauge, makes two opposite edges of above-mentioned plate：First edge 11 and second edge 12 are docked,
As shown in Figure 3；Then argon arc welding welding completion is carried out using ER316L welding wires in joint and forms liner stack shell, as shown in Figure 4
20 position of solder joint.This method uses ER316L welding wires, is closer to SUS444 material compositions, can effectively improve the anti-corruption of weld seam
Erosion ability, prevents weld seam leak.
Preferably, for the tungsten electrode that argon arc welding uses in the embodiment for WC20 Φ 3.2mm, the current polarity of welding uses direct current
Reversal connection, current strength is in the range of 195~245A.
When the thickness T of 10 ＇ of SUS444 stainless steel materials is 2.5mm, current strength is preferably in the range of 195~205A；
When the thickness T of 10 ＇ of SUS444 stainless steel materials is 3.0mm, current strength is preferably in the range of 235~245A.
A diameter of 1.2mm of above-mentioned ER316L welding wires, speed of welding is in the range of 1.6~2.5mm/s, and wire feed rate is 15
~30mm/s.When the thickness T of 10 ＇ of SUS444 stainless steel materials is 2.5mm, wire feed rate is preferably in 15~25mm/s；When
The thickness T of 10 ＇ of SUS444 stainless steel materials is in 3.0mm, and wire feed rate is preferably in 20~30mm/s.
The arc protecting atmosphere of above-mentioned argon arc welding uses 99.99% argon gas, and gas flow is in 8~10L/min；Root is protected
The argon gas that gas uses 99.99% is protected, gas flow is in 3~5L/min.
The present invention uses above-mentioned straight seam welding method for SUS444 stainless steel inner containers so that and commissure welding quality is high,
With stronger resistance to corrosion, weld seam leak can be effectively prevented.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (9)
1. a kind of straight seam welding method of water heater liner, for welding the stack shell of SUS444 stainless steel inner containers；It is characterized in that：
Pre-process and weld including weld port；
The weld port pretreatment includes：Stainless steel materials are rolled into cylinder, then to rolling two opposite sides of rear plate
Edge carries out soak cleaning；
The welding includes the following steps：Cylinder after will wind up is fixed on gauge, makes two opposite sides of above-mentioned plate
Edge docks；Then argon arc welding welding is carried out using ER316L welding wires in joint.
2. the straight seam welding method of water heater liner according to claim 1, it is characterised in that：What the argon arc welding used
Tungsten electrode is WC20 Φ 3.2mm.
3. the straight seam welding method of water heater liner according to claim 2, it is characterised in that：The argon arc welding welding
Current polarity uses DC reverse connection, and current strength is in the range of 195~245A.
4. the straight seam welding method of water heater liner according to claim 3, it is characterised in that：The stainless steel materials
Thickness is 2.5mm, and the current strength is in the range of 195~205A.
5. the straight seam welding method of water heater liner according to claim 3, it is characterised in that：The stainless steel materials
Thickness is 3.0mm, and the current strength is in the range of 235~245A.
6. the straight seam welding method of water heater liner according to claim 1, it is characterised in that：The ER316L welding wires
A diameter of 1.2mm, speed of welding is in the range of 1.6~2.5mm/s, and wire feed rate is in 15~30mm/s.
7. the straight seam welding method of water heater liner according to claim 6, it is characterised in that：The stainless steel materials
Thickness is 2.5mm, and the wire feed rate is in 15~25mm/s.
8. the straight seam welding method of water heater liner according to claim 6, it is characterised in that：The stainless steel materials
Thickness is in 3.0mm, and the wire feed rate is in 20~30mm/s.
9. the straight seam welding method of water heater liner according to claim 1, it is characterised in that：The electric arc of the argon arc welding
Protective gas uses 99.99% argon gas, and gas flow is in 8~10L/min；Root protective gas uses 99.99% argon gas,
Gas flow is in 3~5L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285565.9A CN107999927A (en) | 2017-12-07 | 2017-12-07 | A kind of straight seam welding method of water heater liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285565.9A CN107999927A (en) | 2017-12-07 | 2017-12-07 | A kind of straight seam welding method of water heater liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107999927A true CN107999927A (en) | 2018-05-08 |
Family
ID=62057292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285565.9A Pending CN107999927A (en) | 2017-12-07 | 2017-12-07 | A kind of straight seam welding method of water heater liner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107999927A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170857A (en) * | 1996-07-15 | 1998-01-21 | 陈奇能 | Method for producing inner tube of electric water heater |
| CN101631639A (en) * | 2007-03-09 | 2010-01-20 | 日新制钢株式会社 | Hot water container and process for production thereof |
| CN202692423U (en) * | 2012-07-19 | 2013-01-23 | 苏州巨浪热水器有限公司 | Inner container of water heater |
| CN105252120A (en) * | 2015-11-19 | 2016-01-20 | 安徽大盘特种装备车辆有限公司 | Circular seam welding method for stainless steel gas cylinder liner |
| CN105546824A (en) * | 2016-02-25 | 2016-05-04 | 大连希奥特阳光能源科技有限公司 | Ferritic stainless steel inner container |
-
2017
- 2017-12-07 CN CN201711285565.9A patent/CN107999927A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170857A (en) * | 1996-07-15 | 1998-01-21 | 陈奇能 | Method for producing inner tube of electric water heater |
| CN101631639A (en) * | 2007-03-09 | 2010-01-20 | 日新制钢株式会社 | Hot water container and process for production thereof |
| CN202692423U (en) * | 2012-07-19 | 2013-01-23 | 苏州巨浪热水器有限公司 | Inner container of water heater |
| CN105252120A (en) * | 2015-11-19 | 2016-01-20 | 安徽大盘特种装备车辆有限公司 | Circular seam welding method for stainless steel gas cylinder liner |
| CN105546824A (en) * | 2016-02-25 | 2016-05-04 | 大连希奥特阳光能源科技有限公司 | Ferritic stainless steel inner container |
Non-Patent Citations (1)
| Title |
|---|
| 林克伟等: "太阳能保温水箱内胆A焊缝的焊接", 《热加工工艺》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |
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| RJ01 | Rejection of invention patent application after publication |