CN107825000A - A kind of preparation method of water heater liner - Google Patents
A kind of preparation method of water heater liner Download PDFInfo
- Publication number
- CN107825000A CN107825000A CN201711288272.6A CN201711288272A CN107825000A CN 107825000 A CN107825000 A CN 107825000A CN 201711288272 A CN201711288272 A CN 201711288272A CN 107825000 A CN107825000 A CN 107825000A
- Authority
- CN
- China
- Prior art keywords
- welding
- stack shell
- water heater
- preparation
- heater liner
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/002—Crimping or bending the workpieces at the joining area
-
- 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
- B23K33/004—Filling of continuous seams
- B23K33/006—Filling of continuous seams for cylindrical workpieces
-
- 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
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
Abstract
The present invention discloses a kind of preparation method of water heater liner, is made, comprised the following steps of SUS444 stainless steels：A, SUS444 stainless steel materials are rolled into cylinder；B, the cylinder welding after will wind up using straight seam welding method forms inner bag stack shell；C, stack shell and end socket are welded to form inner bag using circular-seam welding method.This method pre-processes to stack shell weld port before welding so that welding contraposition is simpler, greatly reduces welding difficulty；ER316L welding wires are used simultaneously, is closer to SUS444 material compositions, the resistance to corrosion of weld seam can be effectively improved, prevent weld seam leak.
Description
Technical field
The present invention relates to a kind of preparation method of water heater liner, belong to welding technology field.
Background technology
The material that in general water heater uses is that carbon steel adds enamel to handle inner bag, 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 must enter with inner bag and heating tube
Row insulation processing, installation check are changed inconvenient；To inner bag heating tube overprotection；The other impurities of magnesium rod alloy are easily formed very
More floating objects, block shower nozzle, influence to use.
Therefore, 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 changes 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 preparation method of water heater liner, reduce welding difficulty, weld seam is anticorrosive
Ability is strong, the advantages that antileaking.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of preparation method of water heater liner, is made of SUS444 stainless steels, comprised the following steps：A, by SUS444
Stainless steel materials are rolled into cylinder；B, the cylinder welding after will wind up using straight seam welding method forms inner bag stack shell；C, using ring
Stack shell and end socket are welded to form inner bag by seam welding method.
Preferably, the straight seam welding method comprises the following steps：It is first relative to two of the stainless steel materials after rolling
Edge carry out soak cleaning；Cylinder after will wind up again is fixed on tool, make two of above-mentioned stainless steel materials it is relative
Dock at edge；Then argon arc welding is carried out using ER316L welding wires in joint to weld to form inner bag stack shell.
Preferably, for the tungsten electrode that the argon arc welding uses for WC20 Φ 3.2mm, current polarity uses DC reverse connection, and electric current is strong
Degree is in the range of 195~245A；A diameter of 1.2mm of the ER316L welding wires, speed of welding in the range of 1.6~2.5mm/s,
Wire feed rate is in 15~30mm/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.
Preferably, the circular-seam welding method comprises the following steps：First weld port is pre-processed, then welded again
Connect；
The weld port pretreatment includes：Stack shell port to be welded is fabricated to and has sloping connect
Head；The weld port of the welding point to the stack shell and end socket carries out soak cleaning again；
The welding comprises the following steps：The welding point of the stack shell is inserted in the weld port of the end socket, made
End socket docks with stack shell；Then argon arc welding welding is carried out using ER316L welding wires in the outside that end socket docks with stack shell.
Preferably, for the tungsten electrode that the argon arc welding uses for WC20 Φ 3.2mm, current polarity uses straight polarity direct current, and electric current is strong
Degree is in the range of 165~210A, and arc voltage is in the range of 21~24V；A diameter of 1.2mm of the ER316L welding wires, welding
Speed is in the range of 21~23mm/s.
Preferably, argon gas and 2% oxygen mix of the arc protecting atmosphere of the argon arc welding using 98%, gas flow
In 10~13L/min.
Preferably, the welding point of the stack shell is formed by the stack shell direct pressing, including be sequentially connected inclined-plane ring,
Inner ring and guide ring；The described one end of inclined-plane ring away from inner ring is connected with stack shell；The inner ring is parallel to each other with stack shell, and inner ring
External diameter it is equal with the internal diameter of stack shell；The guide ring is by interior ring stack shell inclined.
Preferably, angle of inclination of the inclined-plane ring from stack shell to inclined is 45 degree.
Preferably, the guide ring by the angle of inclination of interior ring inclined at 10~15 degree.
The beneficial effects of the invention are as follows：Stack shell weld port is pre-processed before welding so that welding contraposition is simpler
It is single, greatly reduce welding difficulty；ER316L welding wires are used simultaneously, is closer to SUS444 material compositions, weldering can be effectively improved
The resistance to corrosion of seam, prevent 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 inner container structure of water heater schematic diagram；
Fig. 2 is the SUS444 stainless steel materials schematic diagrames for making inner bag stack shell；
Fig. 3 is rolled up the cylinder schematic diagram come；
Fig. 4 is rolled up rear cylinder two edges docking schematic diagram；
Fig. 5 is stack shell weld structural representation；
Fig. 6 is the inner bag stack shell schematic diagram to complete；
Fig. 7 is the welded joint structure schematic diagram of inner bag stack shell of the present invention；
Fig. 8 is that end socket of the present invention docks schematic diagram with stack shell；
Fig. 9 is the enlarged diagram of a-quadrant in Fig. 8；
Figure 10 is inner bag and stack shell weld structural representation.
Reference：10 ＇, SUS444 stainless steel materials；10th, stack shell；11st, first edge；12nd, second edge；13rd, weld
Joint；131st, inclined-plane ring；132nd, inner ring；133rd, guide ring；20th, end socket；30th, vertical masonry joint solder joint；40th, circumferential weld solder joint.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, be the water heater liner of the present invention, including stack shell 10 and end socket 20, using SUS444 stainless steels
It is made, comprises the following steps：A, the ＇ of SUS444 stainless steel materials 10 is rolled into cylinder；B, after will wind up using straight seam welding method
Cylinder welding form inner bag stack shell 10；C, stack shell 10 and the welding of end socket 20 are formed by inner bag using circular-seam welding method.
Embodiment 1
Specifically, as shown in figures 2-6, formed for above-mentioned steps b using the cylinder welding after straight seam welding method will wind up
One embodiment of inner bag stack shell 10, by SUS444 stainless steel materials：10 ＇ are rolled into cylinder, first to the stainless steel materials after rolling
Two relative edges：First edge 11 and second edge 12, carry out soak cleaning；Cylinder after will wind up again, which is fixed on, to be controlled
On tool, make two relative edge docking of above-mentioned stainless steel materials, as shown in Figure 4；Then welded in joint using ER316L
Silk carries out argon arc welding and welds to form inner bag stack shell 10, the position of vertical masonry joint solder joint 30 as shown in Figure 5.This method is welded using ER316L
Silk, is closer to SUS444 material compositions, can effectively improve the resistance to corrosion of weld seam, prevent weld seam leak.
Preferably, in the embodiment, for the tungsten electrode that argon arc welding uses for WC20 Φ 3.2mm, current polarity uses DC reverse connection,
Current strength is in the range of 195~245A；A diameter of 1.2mm of the ER316L welding wires of use, speed of welding is in 1.6~2.5mm/
In the range of s, wire feed rate is in 15~30mm/s.When the ＇ of SUS444 stainless steel materials 10 thickness T is 2.5mm, current strength is excellent
It is selected in the range of 195~205A, wire feed rate is preferably in 15~25mm/s.When the ＇ of SUS444 stainless steel materials 10 thickness T is
3.0mm, current strength is preferably in the range of 235~245A, 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 can be played a very good protection to weld seam in 3~5L/min.
Embodiment 2
Specifically, as is seen in figs 7-10, stack shell 10 and end socket 20 are welded by shape using circular-seam welding method for above-mentioned steps c
Into one embodiment of inner bag, the circular-seam welding method is used for the stack shell 10 and end socket 20 for welding SUS444 stainless steel inner containers, bag
Include two steps of weld port pretreatment and welding.Wherein, weld port pretreatment includes：By the end that above-mentioned stack shell 10 is to be welded
Mouth is fabricated to the sloping welding point 13 of tool；The weld port of welding point 13 to the stack shell 10 and end socket 20 again
Learn cleaning；Above-mentioned welding then comprises the following steps：The welding point 13 of above-mentioned stack shell 10 is inserted in the weld port of end socket 20,
As seen in figs. 8-10, end socket 20 is made to be docked with stack shell 10；Then welded in the outside that end socket 20 docks with stack shell 10 using ER316L
Silk carries out argon arc welding welding, the position of circumferential weld solder joint 40 as shown in Figure 10.This method uses ER316L welding wires, with SUS444 materials
Composition is closer to, and can effectively improve the resistance to corrosion of weld seam, prevents weld seam leak.
Preferably, in the embodiment, the tungsten electrode that argon arc welding uses is WC20 Φ 3.2mm, and the current polarity of welding is using straight
Stream just connects, and current strength is in the range of 165~210A, and arc voltage is in the range of 21~24V.The ER316L welding wires of use it is straight
Footpath is 1.2mm, and speed of welding is in the range of 21~23mm/s.When the thickness of stack shell 10 and end socket 20 is 2.5mm, above-mentioned electric current
Intensity is preferably in the range of 165~175A, arc voltage preferably 21~22V.When the thickness of stack shell 10 and end socket 20 is 3.0mm
When, above-mentioned current strength is preferably in the range of 195~210A, arc voltage preferably 23~24V.
Argon gas and 2% oxygen mix of the arc protecting atmosphere of above-mentioned argon arc welding using 98%, gas flow 10~
13L/min。
As shown in fig. 7, the welding point 13 of above-mentioned stack shell 10 is formed by the direct pressing of stack shell 10, including it is sequentially connected oblique
Face ring 131, inner ring 132 and guide ring 133.Wherein, the one end of inclined-plane ring 131 away from inner ring 132 is connected with stack shell 10, inner ring
132 are parallel to each other with stack shell 10, and the outer diameter D ＇ of inner ring 132 is equal with the internal diameter d of stack shell 10；Guide ring 133 is also by inner ring 132
To the inclined of stack shell 10.
As shown in FIG. 8 and 9, tilt angle alpha of the inclined-plane ring 131 from stack shell 10 to inclined is 45 degree, guide ring 133
Inclination angle beta from from inner ring 132 to inclined can play good guide effect to end socket 20, make at 10~15 degree
End socket 20 and stack shell 10 welding contraposition it is simpler quick, contraposition is more neat, greatly reduces welding difficulty.End socket 20 with
Stack shell 10 dock after, because the outer diameter D ＇ of inner ring 132 and the internal diameter d of stack shell 10 are equal so that the port outside diameter of end socket 20 and
The outer diameter D of stack shell 10 is concordant, and tilt angle alpha of the inclined-plane ring 131 from stack shell 10 to inclined is 45 degree so that stack shell 10
Junction and one groove for being used for welding of formation between the port of end socket 20, groove width and stack shell between inclined-plane ring 131
10 thickness are equal, then end socket 20 and stack shell 10 are welded with ER316L welding wires at groove, circular seam welding as shown in Figure 10
40 positions of point.
The present invention uses above-mentioned circular-seam welding method for SUS444 stainless steel inner containers, and welding contraposition is simpler, significantly
Reduce welding difficulty；So that commissure welding quality is high, there is stronger resistance to corrosion, can effectively prevent weld seam leak.
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 (10)
- A kind of 1. preparation method of water heater liner, it is characterised in that：It is made, is comprised the following steps of SUS444 stainless steels： A, SUS444 stainless steel materials are rolled into cylinder；B, the cylinder welding after will wind up using straight seam welding method forms internal container cylinder Body；C, stack shell and end socket are welded to form inner bag using circular-seam welding method.
- 2. the preparation method of water heater liner according to claim 1, it is characterised in that：The straight seam welding method includes Following steps：Edge first relative to two of the stainless steel materials after rolling carries out soak cleaning；Cylinder after will wind up again It is fixed on tool, makes two relative edge docking of above-mentioned stainless steel materials；Then ER316L welding wires are used in joint Argon arc welding is carried out to weld to form inner bag stack shell.
- 3. the preparation method of water heater liner according to claim 2, it is characterised in that：The tungsten electrode that the argon arc welding uses For WC20 Φ 3.2mm, current polarity uses DC reverse connection, and current strength is in the range of 195~245A；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.
- 4. the preparation method of water heater liner according to claim 3, it is characterised in that：The arc protection of the argon arc welding 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.
- 5. the preparation method of water heater liner according to claim 1, it is characterised in that：The circular-seam welding method includes Following steps：First weld port is pre-processed, then welded again；The weld port pretreatment includes：Stack shell port to be welded is fabricated to the sloping welding point of tool；Again The weld port of welding point and end socket to the stack shell carries out soak cleaning；The welding comprises the following steps：The welding point of the stack shell is inserted in the weld port of the end socket, make end socket Docked with stack shell；Then argon arc welding welding is carried out using ER316L welding wires in the outside that end socket docks with stack shell.
- 6. the preparation method of water heater liner according to claim 5, it is characterised in that：The tungsten electrode that the argon arc welding uses For WC20 Φ 3.2mm, current polarity uses straight polarity direct current, current strength in the range of 165~210A, arc voltage 21~ In the range of 24V；A diameter of 1.2mm of the ER316L welding wires, speed of welding is in the range of 21~23mm/s.
- 7. the preparation method of water heater liner according to claim 6, it is characterised in that：The arc protection of the argon arc welding Argon gas and 2% oxygen mix of the gas using 98%, gas flow is in 10~13L/min.
- 8. the preparation method of the water heater liner according to claim any one of 5-7, it is characterised in that：The weldering of the stack shell Joint is formed by the stack shell direct pressing, including inclined-plane ring, inner ring and the guide ring being sequentially connected；The inclined-plane ring is remote One end of inner ring is connected with stack shell；The inner ring is parallel to each other with stack shell, and the external diameter of inner ring is equal with the internal diameter of stack shell；It is described Guide ring is by interior ring stack shell inclined.
- 9. the preparation method of water heater liner according to claim 8, it is characterised in that：The inclined-plane ring is from stack shell in The angle of inclination of spindle tilt is 45 degree.
- 10. the preparation method of water heater liner according to claim 8, it is characterised in that：The guide ring is by interior ring The angle of inclination of inclined is at 10~15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711288272.6A CN107825000A (en) | 2017-12-07 | 2017-12-07 | A kind of preparation method of water heater liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711288272.6A CN107825000A (en) | 2017-12-07 | 2017-12-07 | A kind of preparation method of water heater liner |
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| CN107825000A true CN107825000A (en) | 2018-03-23 |
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ID=61642366
Family Applications (1)
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| CN201711288272.6A Pending CN107825000A (en) | 2017-12-07 | 2017-12-07 | A kind of preparation method of water heater liner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623181A (en) * | 2019-01-30 | 2019-04-16 | 嘉兴任享保温科技有限公司 | A kind of vacuum cup liner welding procedure |
| CN110125729A (en) * | 2019-06-11 | 2019-08-16 | 格力电器（芜湖）有限公司 | A kind of water heater mechanized production system and automatic production method |
| CN110227877A (en) * | 2019-02-13 | 2019-09-13 | 中山市海迪威电器有限公司 | Sealed stainless steel container welding process for liquid storage |
| CN110919229A (en) * | 2018-09-20 | 2020-03-27 | 浙江科诚暖通设备有限公司 | Welding of turning-over section of sealed container |
| CN112222654A (en) * | 2020-08-31 | 2021-01-15 | 佛山市三高保温水箱有限公司 | Welding process for enamel inner container of water heater |
| CN114406623A (en) * | 2022-02-28 | 2022-04-29 | 凯奇集团有限公司 | Forming method of stainless steel sliding cylinder elbow |
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| CN105728976A (en) * | 2016-03-14 | 2016-07-06 | 太原理工大学 | Preparation method of ultrapure ferrite stainless steel homogeneous heat affected zone material |
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| JPS5284550A (en) * | 1975-12-30 | 1977-07-14 | Nisshin Steel Co Ltd | Drum of ferrite stainless steel for hottwater heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919229A (en) * | 2018-09-20 | 2020-03-27 | 浙江科诚暖通设备有限公司 | Welding of turning-over section of sealed container |
| CN109623181A (en) * | 2019-01-30 | 2019-04-16 | 嘉兴任享保温科技有限公司 | A kind of vacuum cup liner welding procedure |
| CN110227877A (en) * | 2019-02-13 | 2019-09-13 | 中山市海迪威电器有限公司 | Sealed stainless steel container welding process for liquid storage |
| CN110125729A (en) * | 2019-06-11 | 2019-08-16 | 格力电器（芜湖）有限公司 | A kind of water heater mechanized production system and automatic production method |
| CN112222654A (en) * | 2020-08-31 | 2021-01-15 | 佛山市三高保温水箱有限公司 | Welding process for enamel inner container of water heater |
| CN114406623A (en) * | 2022-02-28 | 2022-04-29 | 凯奇集团有限公司 | Forming method of stainless steel sliding cylinder elbow |
| CN114406623B (en) * | 2022-02-28 | 2023-09-22 | 凯奇集团有限公司 | Forming method of stainless steel sliding tube elbow |
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