CN108620761B - Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater - Google Patents
Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater Download PDFInfo
- Publication number
- CN108620761B CN108620761B CN201710152827.8A CN201710152827A CN108620761B CN 108620761 B CN108620761 B CN 108620761B CN 201710152827 A CN201710152827 A CN 201710152827A CN 108620761 B CN108620761 B CN 108620761B
- Authority
- CN
- China
- Prior art keywords
- water heater
- enamel
- blank
- heater liner
- liner blank
- 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
Images
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
- B23K33/004—Filling of continuous 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Heat Treatment Of Articles (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a method for improving yield deformation resistance of a welding joint of an enamel steel liner of a water heater, and mainly solves the technical problems of surface oxidation decarburization, low yield deformation resistance and easy cracking and water leakage of the welding joint of the enamel steel liner of the existing water heater. The invention relates to a method for improving yield deformation resistance of a welding joint of an enamel steel liner of a water heater, which comprises the following steps: 1) preparing a water heater inner container blank; 2) sequentially degreasing and activating the surface of the water heater liner blank; 3) coating enamel glaze on the surface of the water heater liner blank by a wet coating method; 4) and carrying out enamel firing treatment on the water heater inner container blank. The method can improve the yield deformation resistance of the welded joint of the enamel steel liner of the water heater by 5-15%; the method is simple and convenient to operate and low in implementation cost.
Description
Technical Field
The invention relates to a method for treating a welding surface of a steel plate, in particular to a method for improving yield deformation resistance of a welding joint of an enamel steel liner of a water heater, and belongs to the technical field of welding and processing of steel materials.
Background
The water heater liner is generally made of an enamel steel substrate, such as an acid-washed hot-rolled steel plate or a cold-rolled steel plate, by tailor welding, enameling after coating the inner surface and then enameling. In the manufacturing process of the water heater liner, the enamel steel substrate is subjected to the working procedures of welding, high-temperature enamel firing at 750-850 ℃ and the like, the inner surface of the water heater liner is only enameled, the outer surface is in a bare state, the outer surface after the high-temperature enamel firing is subjected to oxidation and decarburization, and weak links of a welding joint are more prominent.
The welded joint is a weak link of the water heater liner, and water leakage of the water heater liner mostly occurs in the welded joint area, and the main reasons are that the local strength and yield deformation resistance of the welded joint are reduced, and the fatigue life is shortened. The method for prolonging the fatigue life of the welded joint of the inner container of the water heater and reducing fatigue cracking mainly takes the increase of the thickness of a steel plate and the improvement of a welding method at present. Increasing the thickness of the welded steel plate inevitably increases the weight of the liner and the production cost, while applying more advanced welding methods requires more investment.
The Chinese patent application with application publication number CN102679554A discloses an electric water heater liner with a single welding line, which improves the bearing capacity of the water heater liner by reducing the manufacturing method of splicing welding lines of the water heater liner, and avoids the defects of water leakage and deformation of the water heater liner caused by the welding line.
The Chinese patent application with application publication number CN102649221A discloses a production method of an inner container of an electric water heater, which is manufactured by adopting the method, has no cross of welding seams, has even and flat enamel layer, prevents the welding seams from being corroded by water and leaking water in the prior art, and prolongs the service life.
The prior art lacks an effective solution to the problem of the reduction of the local strength and the yield deformation resistance of the welded joint of the enamel steel liner of the water heater.
Disclosure of Invention
The invention aims to provide a method for improving yield deformation resistance of a welded joint of an enamel steel liner of a water heater, and mainly solves the technical problems of surface oxidation decarburization, low yield deformation resistance and easy cracking and water leakage of the welded joint of the existing welded joint of the enamel steel liner of the water heater.
The technical scheme of the invention is as follows: a method for improving yield deformation resistance of a welding joint of an enamel steel liner of a water heater comprises the following steps:
1) preparing a blank of the water heater inner container, cutting an enamel steel substrate for the water heater inner container according to the size of the water heater inner container, and sequentially splicing, assembling and welding the cut enamel steel substrate for the water heater inner container to prepare the blank of the water heater inner container;
2) sequentially degreasing and activating the surface of the water heater liner blank, putting the water heater liner blank into a container filled with a degreasing agent solution, soaking the water heater liner blank with the degreasing agent solution for 20-50 seconds, and removing grease on the surface of the water heater liner; placing the degreased water heater liner blank in a container filled with a weak acid solution, and soaking the water heater liner blank in the weak acid solution for 20-50 seconds; taking out the water heater liner blank from the weak acid solution, rinsing the surface of the water heater liner blank with deionized water, and blowing the surface of the water heater liner blank with hot air at the temperature of 80-100 ℃ for 2-5 seconds to ensure that the water heater liner blank is dried and prevent the surface of the water heater liner blank from generating rust;
3) coating an enamel glaze on the surface of a water heater liner blank by a wet coating method, and preparing colloidal enamel glaze from enamel glaze dry powder by deionized water, wherein the mass ratio of the enamel glaze dry powder to the deionized water in the colloidal enamel glaze is 200: 30-200: 20; coating colloidal enamel glaze on the back of a welding seam of the dried water heater liner blank and the surfaces of all base metals on the same side, wherein the thickness of an enamel glaze layer is 0.1-0.8 mm; coating colloidal enamel glaze on the front side of a welding seam of a dried water heater liner blank and the surface of a base metal within a width range of 5-50 mm from two sides of a welding seam fusion line, wherein the thickness of an enamel glaze layer is 0.3-1 mm;
4) carrying out enameling burning treatment on the water heater liner blank, and slowly heating the water heater liner blank coated with enamel glaze from 15-25 ℃ to 100-150 ℃ at a heating speed of 5-10 ℃/min to ensure that the water heater liner blank is dried; then heating the water heater liner blank from 100-150 ℃ to 300-350 ℃ at a heating speed of 10-20 ℃/min; heating the water heater liner blank from 300-350 ℃ to 750-850 ℃ at a heating speed of 50-100 ℃/min, and carrying out high-temperature enameling on the water heater liner blank at 750-850 ℃ for 3-5 min to generate an enamel layer; cooling the water heater inner container after the enameling burning from 750-850 ℃ to 300-350 ℃ at a cooling speed of 50-100 ℃/min; and slowly cooling the water heater liner subjected to the enameling burning from 300-350 ℃ to 15-25 ℃ at a cooling speed of 5-20 ℃/min to prepare the water heater enamel steel liner.
Further, in the step 3), coating colloidal enamel glaze on the front side of the welding line of the dried water heater liner blank and the surface of the base material within the width range of 5-50 mm away from the two sides of the welding line, wherein the thickness of the enamel glaze layer is 0.3-1 mm, and if the thickness of the enamel glaze layer is less than 0.3mm, the enamel glaze layer is too thin and has no obvious effect; if the thickness of the glaze layer is larger than 1.0mm, the enamel glaze layer is too thick, which not only easily causes cracking of the enamel layer, but also increases the manufacturing cost. The applicant discovers through years of research that the thickness of the enamel glaze layer on the front side of the welding line of the water heater liner blank is larger than or equal to that of the enamel glaze layer on the back side of the welding line of the water heater liner blank, and the effect is optimal.
In the method, the front side of the welding line of the water heater liner is the outer surface of the water heater liner.
According to the method, the base materials in the width range of 5-50 mm from the front side of the welding line of the blank of the water heater liner and the two sides of the fusion line are subjected to the enameling firing process treatment, so that the surface of the area can be prevented from being oxidized and decarburized, and an enamel layer with a certain thickness is obtained through the enameling firing process treatment, so that the welding joint of the water heater enamel steel liner obtains larger bearing capacity and rigidity, and the yield deformation resistance of the welding joint of the water heater enamel steel liner is improved.
The yield deformation resistance of the welded joint of the water heater enamel steel liner treated according to the single-side enamel process and the welded joint of the water heater enamel steel liner treated according to the method in the prior art are respectively tested, and the yield deformation resistance of the welded joint of the water heater enamel steel liner can be improved by 5-15%.
Compared with the prior art, the invention has the following positive effects: 1. the method improves the bearing capacity of the welding joint of the enamel steel liner of the water heater, prolongs the fatigue life of the welding joint of the enamel steel liner of the water heater, can effectively prevent the surface of the heat affected zone of the welding joint of the enamel steel liner of the water heater from being oxidized and decarburized, improves the yield deformation resistance of the welding joint of the enamel steel liner of the water heater by 5-15%, overcomes the defects of reduced yield deformation resistance and reduced fatigue life of the welding joint caused by softening the heat affected zone of the welding joint of the enamel steel liner of the water heater in the prior art, and thoroughly solves the problem of water leakage of the enamel steel liner of the water heater caused by cracking of the welding joint of the enamel steel liner of the water heater. 2. The method is simple and convenient to operate and low in implementation cost.
Drawings
FIG. 1 is a schematic cross-sectional view of a welded joint of an enamel steel liner of a water heater according to an embodiment of the invention.
The notation in the figure is: 1-enamel steel substrate, 2-welding seam, 3-enamel layer.
Detailed Description
The invention will be further described with reference to fig. 1 and the following description of the preferred embodiments.
Example 1 the enamel steel substrate for a water heater was a pickled steel sheet manufactured by Baoshan Steel works Ltd under the designation BTC330R, and the thickness of the steel sheet was 1.8 mm.
Referring to fig. 1, the method for improving the yield deformation resistance of the welding joint of the enamel steel liner of the water heater comprises the following steps:
1) preparing a blank of the water heater inner container, cutting the enamel steel substrate 1 for the water heater inner container according to the size of the water heater inner container, and sequentially splicing and assembling the cut enamel steel substrate 1 for the water heater inner container to form an I-shaped groove to be butted for welding; welding the paired enamel steel substrates 1 to form a welding seam 2 by adopting a plasma fusion welding single-side one-step welding forming process to manufacture a water heater liner blank;
2) sequentially degreasing and activating the surface of the water heater liner blank, putting the water heater liner blank into a container filled with a degreasing agent solution, soaking the water heater liner blank in a degreasing agent (NaOH + active agent) solution with the mass concentration of 5% for 25 seconds, and removing grease on the surface of the water heater liner; then placing the degreased water heater inner container blank into a container filled with dilute sulfuric acid solution, and soaking the water heater inner container blank for 25 seconds by using dilute sulfuric acid solution with the mass concentration of 5%; then taking out the water heater liner blank, rinsing the surface of the water heater liner blank with deionized water, and blowing the surface of the water heater liner blank with hot air at the temperature of 80 ℃ for 5 seconds;
3) coating an enamel glaze on the surface of a water heater liner blank by a wet coating method, and preparing colloidal enamel glaze from enamel glaze dry powder by deionized water, wherein the mass ratio of the enamel glaze dry powder to the deionized water in the colloidal enamel glaze is 200: 30, of a nitrogen-containing gas; coating colloidal enamel glaze on the back of the welding seam 2 of the dried water heater liner blank and the surfaces of all base metals on the same side, wherein the thickness of the enamel glaze layer is 0.3 mm; coating colloidal enamel glaze on the front surface of a welding line 2 of a water heater liner blank and the surfaces of parent metals within a width range of 20mm from two sides of a welding line fusion line, wherein the thickness of an enamel glaze layer is 0.5 mm;
4) carrying out enameling burning treatment on the water heater liner blank, and heating the water heater liner blank coated with enamel glaze from 15 ℃ to 110 ℃ at a heating speed of 6 ℃/min; then heating the water heater inner container blank from 110 ℃ to 310 ℃ at a heating speed of 15 ℃/min; heating the water heater liner blank from 310 ℃ to 780 ℃ at a heating speed of 60 ℃/min, and carrying out high-temperature enameling on the water heater liner blank at 780 ℃ for 5min to generate an enamel layer 3; cooling the water heater inner container after the enameling burning from 780 ℃ to 310 ℃ at a cooling speed of 60 ℃/min; and cooling the water heater inner container after the enameling burning from 310 ℃ to 20 ℃ at a cooling speed of 10 ℃/min to prepare the water heater enamel steel inner container.
The resistance to yield deformation of the welded joint of the water heater enamel steel liner treated according to the single-side enamel process in the prior art and the welded joint of the water heater enamel steel liner in the embodiment 1 of the invention are respectively tested: processing a steel plate with the thickness of 0.3mm of the single-side enamel layer processed by the single-side enamel process in the prior art into a sample with the thickness of 25mm multiplied by 200mm, and measuring the minimum load of the sample with yield deformation by stretching to be 14.8 KN; the enameled pressed steel in the embodiment 1 of the invention is processed into a sample of 25mm multiplied by 200mm, the minimum load of yielding deformation of the sample measured by stretching is 16.3KN, and the yielding deformation resistance of the welded joint of the enameled steel liner of the water heater can be improved by 10% in the embodiment 1 of the invention.
Example 2, the enamel steel substrate for a water heater was a steel plate manufactured by Baoshan Steel Ltd under BTC330R, and the thickness of the steel plate was 1.6 mm.
Referring to fig. 1, the method for improving the yield deformation resistance of the welding joint of the enamel steel liner of the water heater comprises the following steps:
1) preparing a blank of the water heater inner container, cutting the enamel steel substrate 1 for the water heater inner container according to the size of the water heater inner container, and sequentially splicing and assembling the cut enamel steel substrate 1 for the water heater inner container to form an I-shaped groove to be butted for welding; welding the paired enamel steel substrates 1 to form a welding seam 2 by adopting a TIG argon arc welding fusion welding single-side one-time welding forming process to prepare a water heater liner blank;
2) sequentially degreasing and activating the surface of the water heater liner blank, putting the water heater liner blank into a container filled with a degreasing agent solution, soaking the water heater liner blank in a degreasing agent (NaOH + active agent) solution with the mass concentration of 3.5% for 40 seconds, and removing grease on the surface of the water heater liner; then placing the degreased water heater inner container blank into a container filled with dilute sulfuric acid solution, and soaking the water heater inner container blank for 35 seconds by using the dilute sulfuric acid solution with the mass concentration of 3.5%; then taking out the water heater liner blank, rinsing the surface of the water heater liner blank with deionized water, and purging the surface of the water heater liner blank with hot air at 90 ℃ for 3 seconds;
3) coating an enamel glaze on the surface of a water heater liner blank by a wet coating method, and preparing colloidal enamel glaze from enamel glaze dry powder by deionized water, wherein the mass ratio of the enamel glaze dry powder to the deionized water in the colloidal enamel glaze is 200: 20; coating colloidal enamel glaze on the back of the welding seam 2 of the dried water heater liner blank and the surfaces of all base metals on the same side, wherein the thickness of the enamel glaze layer is 0.7 mm; coating colloidal enamel glaze on the front surface of a welding line 2 of a water heater liner blank and the surfaces of parent metals within a width range of 50mm from two sides of a welding line fusion line, wherein the thickness of an enamel glaze layer is 0.9 mm;
4) carrying out enameling burning treatment on the water heater liner blank, heating the water heater liner blank coated with enamel glaze from 15 ℃ to 130 ℃ at a heating speed of 10 ℃/min, and ensuring that the water heater liner blank is dried; then heating the water heater liner blank from 130 ℃ to 350 ℃ at a heating speed of 20 ℃/min; then heating the water heater liner blank from 350 ℃ to 820 ℃ at a heating speed of 80 ℃/min, and carrying out high-temperature enameling on the water heater liner blank at 820 ℃ for 3min to generate an enamel layer 3; cooling the water heater inner container after the enameling burning from 820 ℃ to 300 ℃ at a cooling speed of 80 ℃/min; and cooling the water heater inner container after the enameling at the cooling speed of 15 ℃/min from 300 ℃ to 20 ℃ to prepare the water heater enamel steel inner container.
The resistance to yield deformation of the welded joint of the water heater enamel steel liner treated according to the single-side enamel process in the prior art and the welded joint of the water heater enamel steel liner in the embodiment 2 of the invention are respectively tested as follows: the steel plate with the thickness of 0.7mm of the single-side enamel layer processed by the single-side enamel process in the prior art is processed into a sample with the thickness of 25mm multiplied by 200mm, the minimum load of the sample with yield deformation measured by stretching is 15.2KN, the enamel steel plate in the embodiment 2 of the invention is processed into the sample with the thickness of 25mm multiplied by 200mm, the minimum load of the sample with yield deformation measured by stretching is 17.3KN, and the method can improve the yield deformation resistance of the welded joint of the enamel steel liner of the water heater by 14.5 percent.
Example 3 the enamel steel substrate for a water heater was a pickled steel sheet manufactured by Baoshan Steel works Ltd under the designation BTC330R, and the thickness of the steel sheet was 1.5 mm.
Referring to fig. 1, the method for improving the yield deformation resistance of the welding joint of the enamel steel liner of the water heater comprises the following steps:
1) preparing a blank of the water heater inner container, cutting the enamel steel substrate 1 for the water heater inner container according to the size of the water heater inner container, and sequentially splicing and assembling the cut enamel steel substrate 1 for the water heater inner container to form an I-shaped groove to be butted for welding; welding the paired enamel steel substrates 1 to form a welding seam 2 by adopting an MAG gas shielded welding fusion welding single-side one-step welding forming process to prepare a water heater inner container blank;
2) sequentially degreasing and activating the surface of a water heater liner blank, putting the water heater liner blank into a container filled with a degreasing agent solution, soaking the water heater liner blank in a degreasing agent (NaOH + active agent) solution with the mass concentration of 3% for 40 seconds, and removing grease on the surface of the water heater liner; then placing the degreased water heater inner container blank into a container filled with dilute sulfuric acid solution, and soaking the water heater inner container blank for 35 seconds by using the dilute sulfuric acid solution with the mass concentration of 3%; then taking out the water heater liner blank, rinsing the surface of the water heater liner blank with deionized water, and purging the surface of the water heater liner blank with hot air at 95 ℃ for 3 seconds;
3) coating an enamel glaze on the surface of a water heater liner blank by a wet coating method, and preparing colloidal enamel glaze from enamel glaze dry powder by deionized water, wherein the mass ratio of the enamel glaze dry powder to the deionized water in the colloidal enamel glaze is 200: 20; coating colloidal enamel glaze on the back of the welding seam 2 of the dried water heater liner blank and the surfaces of all base metals on the same side, wherein the thickness of the enamel glaze layer is 0.5 mm; coating colloidal enamel glaze on the front surface of a welding line 2 of a water heater liner blank and the surfaces of parent metals within a width range of 30mm from two sides of a welding line fusion line, wherein the thickness of an enamel glaze layer is 0.8 mm;
4) carrying out enameling burning treatment on the water heater liner blank, heating the water heater liner blank coated with enamel glaze from 15 ℃ to 150 ℃ at a heating speed of 10 ℃/min, and ensuring that the water heater liner blank is dried; then heating the water heater liner blank from 150 ℃ to 350 ℃ at a heating speed of 25 ℃/min; then heating the water heater liner blank from 350 ℃ to 850 ℃ at a heating speed of 100 ℃/min, and carrying out high-temperature enameling on the water heater liner blank at 850 ℃ for 3min to generate an enamel layer 3; cooling the water heater inner container after the enameling burning from 850 ℃ to 300 ℃ at a cooling speed of 100 ℃/min; and cooling the water heater inner container after the enameling at the cooling speed of 25 ℃/min from 300 ℃ to 20 ℃ to prepare the water heater enamel steel inner container.
The yield deformation resistance of the welded joint of the water heater enamel steel liner treated according to the single-side enamel process in the prior art and the welded joint of the water heater enamel steel liner in the embodiment 3 of the invention are respectively tested: the steel plate with the thickness of the single-side enamel layer of 0.5mm processed by the single-side enamel process in the prior art is processed into a sample with the thickness of 25mm multiplied by 200mm, the minimum load of the sample with yield deformation measured by stretching is 14.9KN, the enamel steel plate in the embodiment 3 of the invention is processed into the sample with the thickness of 25mm multiplied by 200mm, the minimum load of the sample with yield deformation measured by stretching is 17.1KN, and the method can improve the yield deformation resistance of the welded joint of the enamel steel liner of the water heater by 14.8 percent.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (2)
1. A method for improving yield deformation resistance of a welding joint of an enamel steel liner of a water heater is characterized by comprising the following steps:
1) preparing a blank of the water heater inner container, cutting an enamel steel substrate for the water heater inner container according to the size of the water heater inner container, and sequentially splicing, assembling and welding the cut enamel steel substrate for the water heater inner container to prepare the blank of the water heater inner container;
2) sequentially degreasing and activating the surface of the water heater liner blank, putting the water heater liner blank into a container filled with a degreasing agent solution, soaking the water heater liner blank with the degreasing agent solution for 20-50 seconds, and removing grease on the surface of the water heater liner; placing the degreased water heater liner blank in a container filled with a weak acid solution, and soaking the water heater liner blank in the weak acid solution for 20-50 seconds; taking out the water heater liner blank from the weak acid solution, rinsing the surface of the water heater liner blank with deionized water, and blowing the surface of the water heater liner blank with hot air at the temperature of 80-100 ℃ for 2-5 seconds;
3) coating an enamel glaze on the surface of a water heater liner blank by a wet coating method, and preparing colloidal enamel glaze from enamel glaze dry powder by deionized water, wherein the mass ratio of the enamel glaze dry powder to the deionized water in the colloidal enamel glaze is 200: 30-200: 20; coating colloidal enamel glaze on the back of a welding seam of the dried water heater liner blank and the surfaces of all base metals on the same side, wherein the thickness of an enamel glaze layer is 0.1-0.8 mm; coating colloidal enamel glaze on the front side of a welding seam of a dried water heater liner blank and the surface of a base metal within a width range of 5-50 mm from two sides of a welding seam fusion line, wherein the thickness of an enamel glaze layer is 0.3-1 mm; the front side of the welding line of the water heater liner blank is the outer surface of the water heater liner blank;
4) carrying out enameling burning treatment on the water heater liner blank, and slowly heating the water heater liner blank coated with enamel glaze from 15-25 ℃ to 100-150 ℃ at a heating speed of 5-10 ℃/min to ensure that the water heater liner blank is dried; then heating the water heater liner blank from 100-150 ℃ to 300-350 ℃ at a heating speed of 10-20 ℃/min; heating the water heater liner blank from 300-350 ℃ to 750-850 ℃ at a heating speed of 50-100 ℃/min, and carrying out high-temperature enameling on the water heater liner blank at 750-850 ℃ for 3-5 min to generate an enamel layer; cooling the water heater inner container after the enameling burning from 750-850 ℃ to 300-350 ℃ at a cooling speed of 50-100 ℃/min; and slowly cooling the water heater liner subjected to the enameling burning from 300-350 ℃ to 15-25 ℃ at a cooling speed of 5-20 ℃/min to prepare the water heater enamel steel liner.
2. The method for improving the yield deformation resistance of the welding joint of the water heater enamel steel liner as claimed in claim 1, wherein the thickness of the enamel glaze layer on the front side of the welding line of the water heater liner blank is more than or equal to the thickness of the enamel glaze layer on the back side of the welding line of the water heater liner blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152827.8A CN108620761B (en) | 2017-03-15 | 2017-03-15 | Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152827.8A CN108620761B (en) | 2017-03-15 | 2017-03-15 | Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108620761A CN108620761A (en) | 2018-10-09 |
| CN108620761B true CN108620761B (en) | 2020-08-11 |
Family
ID=63686392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710152827.8A Active CN108620761B (en) | 2017-03-15 | 2017-03-15 | Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108620761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624937B (en) * | 2020-05-06 | 2022-07-15 | 上海梅山钢铁股份有限公司 | Method for detecting fish scaling resistance of hot-rolled pickled enameled steel plate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185742B1 (en) * | 1998-10-23 | 2001-02-13 | Brian Doherty | Cool garment |
| CN101210738A (en) * | 2006-12-28 | 2008-07-02 | 海尔集团公司 | Water heater porcelain enamel inner bag and manufacturing method thereof |
| CN102679554A (en) * | 2012-05-18 | 2012-09-19 | 广东格美淇电器有限公司 | Inner container of electric water heater with single welding line |
| CN102788429A (en) * | 2012-09-03 | 2012-11-21 | 梁荣顺 | Electric water heater inner container made by improved welding technology and manufacturing method of electric water heater inner container |
| CN103836797A (en) * | 2014-03-06 | 2014-06-04 | 江苏迈能高科技有限公司 | Double-interlayer inner container of water heater and assembling technique of double-interlayer inner container |
| CN105399328A (en) * | 2015-11-20 | 2016-03-16 | 平顶山市圣康炊具有限公司 | High-strength enamel pan and production technology thereof |
| CN106288396A (en) * | 2016-10-21 | 2017-01-04 | 江阴硅普搪瓷股份有限公司 | A kind of pair of D-shaped quick-acting water heater inner bag and the fusion method of enamel glass coating thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8869399B2 (en) * | 2011-07-21 | 2014-10-28 | Miclau S.R.I. Inc. | Method of constructing an inner glass-lined steel tank for a hot water heater |
-
2017
- 2017-03-15 CN CN201710152827.8A patent/CN108620761B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185742B1 (en) * | 1998-10-23 | 2001-02-13 | Brian Doherty | Cool garment |
| CN101210738A (en) * | 2006-12-28 | 2008-07-02 | 海尔集团公司 | Water heater porcelain enamel inner bag and manufacturing method thereof |
| CN102679554A (en) * | 2012-05-18 | 2012-09-19 | 广东格美淇电器有限公司 | Inner container of electric water heater with single welding line |
| CN102788429A (en) * | 2012-09-03 | 2012-11-21 | 梁荣顺 | Electric water heater inner container made by improved welding technology and manufacturing method of electric water heater inner container |
| CN103836797A (en) * | 2014-03-06 | 2014-06-04 | 江苏迈能高科技有限公司 | Double-interlayer inner container of water heater and assembling technique of double-interlayer inner container |
| CN105399328A (en) * | 2015-11-20 | 2016-03-16 | 平顶山市圣康炊具有限公司 | High-strength enamel pan and production technology thereof |
| CN106288396A (en) * | 2016-10-21 | 2017-01-04 | 江阴硅普搪瓷股份有限公司 | A kind of pair of D-shaped quick-acting water heater inner bag and the fusion method of enamel glass coating thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108620761A (en) | 2018-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018077067A1 (en) | Steel welding component with aluminum or aluminum alloy coating, and preparation method therefor | |
| CN108265252B (en) | Environment-friendly hot-dip coating method | |
| KR101950546B1 (en) | Method for producing galvanized steel sheet for hot stamping, alloyed hot-dipped galvanized steel sheet for hot stamping and method for producing same, and hot stamped component | |
| CN103221581B (en) | The manufacture method of the hot press parts of hot pressing steel plate and use hot pressing steel plate | |
| JP2022513740A (en) | Manufacturing method and equipment for corrosion-resistant hot stamping parts | |
| CN101433990A (en) | Overlaying welding method of large area carbide alloy of workpiece wear layer | |
| CN106755843B (en) | A kind of process making orientation silicon steel | |
| CN109434384B (en) | Preparation method and device of coated steel plate and hot stamping method | |
| CN109128714B (en) | Hot continuous rolling large-scale preparation method of stainless steel-carbon steel composite plate | |
| CN108620761B (en) | Method for improving yield deformation resistance of welding joint of enamel steel liner of water heater | |
| JP2018171649A (en) | Resistance spot-welding method and welding condition determination method for resistance spot welding | |
| CN107699849B (en) | High-frequency induction hot-dip aluminizing process | |
| CN106480445B (en) | The alloy material of wear-resisting heat resistanceheat resistant composite coating is prepared on coiler pinch-roll surface | |
| CN106480446B (en) | In the method that coiler pinch-roll surface prepares wear-resisting heat resistanceheat resistant composite coating | |
| CN110405319A (en) | The process for welding repair of heat resisting cast steel ZG40Cr24Ni9Si2NRe | |
| CN106269980B (en) | A kind of preparation process of seamless steel pipe | |
| CN105643077A (en) | Spot welding technological method for aluminum alloy workpiece | |
| CN103192244B (en) | Machining technology for titanium alloys and method for producing titanium rods and titanium wires through machining technology | |
| CN101934434A (en) | Cast iron hot repair welding process and device | |
| CN114015946B (en) | High-strength corrosion-resistant stainless steel coated steel wire for bridge cable and preparation method thereof | |
| CN101487104A (en) | Carbon steel / stainless steel composite material and preparation | |
| CN101476100A (en) | Method for manufacturing single-sided aluminium plating steel plate | |
| CN104959782A (en) | Hot spinning process for oil filter shell | |
| RU135565U1 (en) | ELECTRODE FOR ARC WELDING OF STEEL PARTS | |
| JP3587944B2 (en) | High frequency resistance welding method for plated steel sheet containing Al in plating layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |