CN102174698A - Processes for rapidly repairing enamel liner - Google Patents
Processes for rapidly repairing enamel liner Download PDFInfo
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- CN102174698A CN102174698A CN 201110008360 CN201110008360A CN102174698A CN 102174698 A CN102174698 A CN 102174698A CN 201110008360 CN201110008360 CN 201110008360 CN 201110008360 A CN201110008360 A CN 201110008360A CN 102174698 A CN102174698 A CN 102174698A
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- enamel
- inner bag
- defect point
- inner container
- sheet
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- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 9
- 230000007547 defect Effects 0.000 claims description 42
- 238000003466 welding Methods 0.000 claims description 31
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229910052573 porcelain Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000010257 thawing Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 238000004534 enameling Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000012611 container material Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 230000008439 repair process Effects 0.000 abstract description 12
- 208000034656 Contusions Diseases 0.000 abstract 1
- 208000034526 bruise Diseases 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 238000010422 painting Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012797 qualification Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000000037 vitreous enamel Substances 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses processes for rapidly repairing an enamel liner, belonging to the technical field of water heaters. Different processes are adopted to repair (1) circular seams, straight slits, pores with the diameter of 1-3mm at the T-shaped opening and the positions subjected to iron exposure of the enamel liner as well as the positions subjected to cracking and peeling caused by any bruise of the enamel liner, and are also adopted to repair (2) hard spots on the surface of the enamel liner and any position with a large iron exposure area. In the processes, artificial painting and repairing are avoided, so the labor cost is greatly reduced; electric sintering is omitted, so the charge for repeated enamel sintering is zero; and the repair cost is extremely low, the repair work is simple and rapid, high efficiency and good quality are achieved, and the service life of the enamel liner of a water heater is prolonged at the same time.
Description
Technical field
The invention belongs to technical field of water heaters, a kind of specifically enamel inner container technique for rapidly repairing.
Background technology
The enamel water heater liner originated from the U.S. before 50 years.China in water-heater is produced, extensively adopts enamel inner container in recent years.The main process of enamel inner container is: ℃ burn till inner bag welding → chemical pre-treatment → oven dry → application of slip → 845.Because welded, the influence of factors such as pre-treatment, the application of slip, the surface of enamel inner container inevitably many mass defects will occur, such as: circumferential weld, vertical masonry joint, middle tube and top, leakage iron, the pore at T shape mouth place at the end, the burst porcelain that leakage iron, pit and the transportation of middle tube, top, basal surface collided with and caused.If these defectives are not handled, water-heater uses and will occur leaking in 2～3 months.
At present both at home and abroad the method for the reparation inner bag that the water heater porcelain enamel industry is traditional is: earlier with the inner bag defective locations with pneumatic grinding mill polish → again with enamel material correction of the defect position → drying → advance enamelling kiln carries out 845 ℃ of sintering.The shortcoming that this technology exists is: because double sintering, enamel inner container surface (circumferential weld, vertical masonry joint, middle tube and top, the T shape mouth place at the end, water inlet pipe and water outlet pipe place) can produce new recessive defective, and sightless recessive defective manifests once more through double sintering, produce new pore, leak iron, qualification rate is only about 50%; It is lower to ward off qualification rate more for the third time again, and new defective is more and more, and variation has taken place in the metallographic structure of steel plate, until scrapping.At present, both at home and abroad the water-heater production industry (as Haier, beautiful, the emperor is bright, Saden is grand, A.O Smith etc.) method that is still traditional reparation inner bag of reparation employing of enamel inner container.This method efficient is low, of poor quality, cost is high, and answering time and again warded off partial enamel layer thickness is increased, and inner bag in use can occur splitting porcelain, burst porcelain, has not had the protection of enamel layer and leaks very soon.Inner bag after repairing according to the conventional method and newly courage the same all will be in the electric furnace of 500～1000KW high temperature sintering, inner bag one is less important to expend the 20 polybasic electricity charge, cost of labor and increase progressively successively because of the tooling cost of repeatedly warding off again.Efficient is low, wards off of poor qualityly again, and work-ing life of inner bag is short, causes very big loss for enterprise, user.
Summary of the invention
In order to overcome the problem of above-mentioned existence, the invention provides a kind of enamel inner container technique for rapidly repairing, it need not artificial coating and repairs, and need not the electricity consumption sintering, rehabilitation expense is extremely low, simple and fast, efficient height, quality is good, once repairs qualification rate and reaches 100%, and further prolong work-ing life.
Technical scheme of the present invention is: a kind of enamel inner container technique for rapidly repairing, it is characterized in that, and comprise the steps:
(1). at first preparing welding burner, oxygen cylinder, acetylene cylinder, lighter, operator's console, 12V low-voltage lighting, eye-protection glasses and area is 0.2-0.6cm
2, thickness is that 0.2～0.5mm enamel sheet is some standby;
(2). enamel inner container is placed on the operator's console, utilization has the support rotation inner bag of four 203 or 205 bearings, use the 12V low-voltage lighting to begin all sites (circumferential weld, vertical masonry joint, middle tube and top, T shape mouth, flange port, water inlet pipe and water outlet pipe etc.) to whole inner bag, the defect point at scrutiny place from the enamel inner container flange port at the end;
(3). after determining defect point, make defect point rotate to inner bag under;
(4). with dried cloth with defect point place wiped clean;
(5). determine the attribute of defect point and select restorative procedure:
A. enamel inner container circumferential weld, vertical masonry joint, T shape mouth place exist diameter at the pore of 1～3mm, the position and any crackle, the burst porcelain position of damaging and causing of enamel inner container of leaking iron;
Restorative procedure: the total valve of at first opening oxygen cylinder, acetylene cylinder, open oxygen, acetylene gas switch on the air gun then, put fuel gas welding torch with lighter, earlier carry out preheating in the outside of defect point inner bag with the front portion of welding burner flame, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating (avoiding stress concentration); Observe the inner bag change in color, when the defect point surface is dark red, use the indirect heating of the middle part of welding burner flame again to inner bag, observe the inner bag color to orange (sintering temperatures of about 840～850 ℃ of normal enamel inner containers), rejected region is melted flat up to pore or the enamel material thawing of leakage iron position; The new bubble that cruises that is produced around rejected region is heated slowly, determine that the gas discharge is flat up to melting, be cooled to room temperature, pile up in qualified district repairing good inner bag;
B. the larger area at the pit on enamel inner container surface and any position leaks the iron position;
Restorative procedure: getting area is 0.2～0.6cm
2Thickness is the enamel sheet (deciding according to leakage iron, pit area) of 0.2～0.5mm, the shiny surface of enamel sheet is affixed on the defect point of inner bag, the point fuel gas welding torch, use of the outside preheating of the front portion of welding burner flame earlier at the defect point inner bag, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating (avoiding stress concentration); Observe the inner bag change in color, when the defect point surface is dark red, use the indirect heating of the middle part of welding burner flame again, observe inner bag color to orange (sintering temperatures of about 840～850 ℃ of normal enamel inner containers) and rejected region is melted flat, covering up to leaking the thawing of iron or pit position enamel sheet to inner bag; Be cooled to room temperature, pile up in qualified district repairing good inner bag.
Raw materials used and the normal inner bag enamel of the preparation of described enamel sheet is raw materials used identical.
The preparation method of described enamel sheet comprises following two kinds:
A. utilize useless enamel inner container, knock the outer wall of inner bag, collect the enamel sheet that drops because of peeled off by external force with iron hammer;
B. as enamel inner container gives up, during normal enamel production operation, get one of the enamel steel plate special of SPCC material, steel plate and normal enamel inner container material therefor, thickness are identical, enameling process is close with the enameling process of normal heat water heater liner, inner bag adopts the single face application of slip, and steel plate adopts the two-sided application of slip, with enamel inner container with the normal sintering of stove; Come out of the stove after the cooling,, collect the enamel sheet that drops because of peeled off by external force with the positive and negative that iron hammer knocks enameling sheet.
Quality-guarantee and safety notice:
The normal firing temperature of enamel inner container is 840～850 ℃, notes observing the variation of enamel surface color when heating with welding burner, the distance of regulating air gun at any time, and keeping the color on enamel surface is orange, prevents that temperature is too high and burns;
The safety of oxygen cylinder and acetylene cylinder is placed distance and is remained on more than the 5m, and the safe distance of operator and oxygen cylinder, acetylene cylinder remains on more than the 10m.The operator will be with eye-protection glasses, not facing to the people, will close oxygen, acetylene gas switch on the air gun when quitting work respectively, and close the total valve of oxygen, acetylene cylinder respectively when lighting welding gun.
The invention has the beneficial effects as follows: the enamel inner container technique for rapidly repairing of the present invention fully method with the traditional reparation inner bag of enamel industry is different, need not artificial coating repairing, and cost of labor will reduce significantly.Need not the electricity consumption sintering, multiple enamel firing knot energy charge is zero, and rehabilitation expense is extremely low, simple and fast, and the efficient height, quality is good, can prolong the work-ing life of enamel internal container of water-heater simultaneously.
Experimental data:, adopt the technology of the present invention to repair overstocked enamel defect inner bag 561pcs, qualified 561pcs, qualification rate 100% altogether in Xinjide Electrical Appliances Co., Ltd., Shandong from January 8,4 days to 2011 January in 2011.Detect according to German enamel standard DIN4753 repairing enamel inner container, detected result is as shown in table 1.
Table 1 is repaired enamel inner container according to German enamel standard DIN4753 detected result
| Project | Requirement | Detected result |
| Coat-thickness | 0.15～0.5mm | 0.2～0.35mm |
| Adherence | Must not be block | Meet the requirements |
| Shock-resistance | The damage of diameter greater than 1.5mm do not take place in visual porcelain facing | (testing in back 24 hours) meets the requirements |
| The heatproof acute degeneration | 185 ℃ of range estimations of the temperature difference do not have damage | Meet the requirements |
| Acidproof aggressiveness | The A level | The A level |
| Standard protection electric current | ≤22.5mA/m 2 | 13.2～15.3mA/m 2 |
Annotate: pcs is a unit of quantity.
Table 2 repairs enamel inner container for traditional method and the technology of the present invention is repaired the contrast of enamel inner container expense:
Table 2 traditional method repairs enamel inner container and the technology of the present invention is repaired the contrast of enamel inner container expense
Performance analysis:
Utilize enamel inner container fast repair technique of the present invention once altogether successfully to repair 561pcs qualified, save 47.1 yuan of costs, save 26423.1 yuan of funds altogether for every.
Embodiment
Embodiment 1
Exist diameter to repair to enamel inner container circumferential weld, vertical masonry joint, T shape mouth place, comprise the steps: at the pore of 1～3mm, the position and any crackle, the burst porcelain position of causing of damaging of enamel inner container of leakage iron
(1). it is standby at first to prepare welding burner, oxygen cylinder, acetylene cylinder, lighter, operator's console, 12V low-voltage lighting and eye-protection glasses;
(2). enamel inner container is placed on the operator's console, utilization has the support rotation inner bag of four 203 (or 205) bearings, use the 12V low-voltage lighting to begin all sites (circumferential weld, vertical masonry joint, middle tube and top, T shape mouth, flange port, water inlet pipe and water outlet pipe etc.) to whole inner bag, the defect point at scrutiny place from the enamel inner container flange port at the end;
(3). after determining defect point, make defect point rotate to inner bag under;
(4). with dried cloth with defect point place wiped clean;
(5). at first open the total valve of oxygen cylinder, acetylene cylinder, open oxygen, acetylene gas switch on the air gun then, put fuel gas welding torch with lighter, earlier carry out preheating in the outside of defect point inner bag with the front portion of welding burner flame, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating (avoiding stress concentration); Observe the inner bag change in color, when the defect point surface is dark red, use the indirect heating of the middle part of welding burner flame again, observe inner bag color to orange (sintering temperatures of about 840～850 ℃ of normal enamel inner containers) and rejected region is melted flat up to pore or the enamel material thawing of leakage iron position to inner bag; The new bubble that cruises that is produced around rejected region is heated slowly, determine that the gas discharge is flat up to melting, be cooled to room temperature, pile up in qualified district repairing good inner bag.
Embodiment 2
The pit on enamel inner container surface and the larger area leakage iron position at any position are repaired, comprise the steps:
(1). at first preparing welding burner, oxygen cylinder, acetylene cylinder, lighter, operator's console, 12V low-voltage lighting, eye-protection glasses and area is 0.2～0.6cm
2, thickness is that 0.2～0.5mm enamel sheet is some standby;
(2). enamel inner container is placed on the operator's console, utilization has the support rotation inner bag of four 203 (or 205) bearings, use the 12V low-voltage lighting to begin all sites (circumferential weld, vertical masonry joint, middle tube and top, T shape mouth, flange port, water inlet pipe and water outlet pipe etc.) to whole inner bag, the defect point at scrutiny place from the enamel inner container flange port at the end;
(3). after determining defect point, make defect point rotate to inner bag under;
(4). with dried cloth with defect point place wiped clean;
(5). getting area is 0.2～0.6cm
2Thickness is the enamel sheet (deciding according to leakage iron, pit area) of 0.2～0.5mm, the shiny surface of enamel sheet is affixed on the defect point of inner bag, the point fuel gas welding torch, use of the outside preheating of the front portion of welding burner flame earlier at the defect point inner bag, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating (avoiding stress concentration); Observe the inner bag change in color, when the defect point surface is dark red, use the indirect heating of the middle part of welding burner flame again, observe inner bag color to orange (sintering temperatures of about 840～850 ℃ of normal enamel inner containers) and rejected region is melted flat, covering up to leaking the thawing of iron or pit position enamel sheet to inner bag; Be cooled to room temperature, pile up in qualified district repairing good inner bag.
Claims (3)
1. an enamel inner container technique for rapidly repairing is characterized in that, comprises the steps:
(1). at first preparing welding burner, oxygen cylinder, acetylene cylinder, lighter, operator's console, 12V low-voltage lighting, eye-protection glasses and area is 0.2～0.6cm
2, thickness is that 0.2～0.5mm enamel sheet is some standby;
(2). enamel inner container is placed on the operator's console, utilizes the support rotation inner bag have four 203 or 205 bearings, use the 12V low-voltage lighting to begin all sites to whole inner bag, the defect point at scrutiny place from the enamel inner container flange port;
(3). after determining defect point, make defect point rotate to inner bag under;
(4). with dried cloth with defect point place wiped clean;
(5). determine the attribute of defect point and select restorative procedure:
A. enamel inner container circumferential weld, vertical masonry joint, T shape mouth place exist diameter at the pore of 1～3mm, the position and any crackle, the burst porcelain position of damaging and causing of enamel inner container of leaking iron;
Restorative procedure: the total valve of at first opening oxygen cylinder, acetylene cylinder, open oxygen, acetylene gas switch on the air gun then, put fuel gas welding torch with lighter, earlier carry out preheating in the outside of defect point inner bag with the front portion of welding burner flame, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating; Observe the inner bag change in color, when the defect point surface is dark red, use the indirect heating of the middle part of welding burner flame again, observe the inner bag color, rejected region is melted flat up to pore or the enamel material thawing of leakage iron position to orange to inner bag; The new bubble that cruises that is produced around rejected region is heated slowly, determine that the gas discharge is flat up to melting, be cooled to room temperature, pile up in qualified district repairing good inner bag;
B. the larger area at the pit on enamel inner container surface and any position leaks the iron position;
Restorative procedure: getting area is 0.2～0.6cm
2Thickness is the enamel sheet of 0.2～0.5mm, the shiny surface of enamel sheet is affixed on the defect point of inner bag, and the some fuel gas welding torch is used the outside preheating of the front portion of welding burner flame at the defect point inner bag earlier, the direction of travel of welding burner moves around defect point front and back or left and right directions, makes its abundant preheating; Observation inner bag change in color when the defect point surface is dark red, is used the indirect heating of the middle part of welding burner flame to inner bag again, observes the inner bag color to orange, up to leaking the thawing of iron or pit position enamel sheet rejected region is melted flat, covering; Be cooled to room temperature, pile up in qualified district repairing good inner bag.
2. a kind of enamel inner container technique for rapidly repairing according to claim 1 is characterized in that, the preparation raw material of described enamel sheet is raw materials used identical with normal inner bag enamel.
3. described a kind of enamel inner container technique for rapidly repairing according to claim 1 and 2, it is characterized in that, the preparation method of described enamel sheet is: utilize useless enamel inner container, knock the outer wall of inner bag with iron hammer, when collecting because of the enamel sheet that peeled off by external force to drop or normal enamel production operation, get one of the enamel steel plate special of SPCC material, steel plate and normal enamel inner container material therefor, thickness are identical, steel plate adopts the two-sided application of slip, with enamel inner container with the normal sintering of stove; Come out of the stove after the cooling,, collect the enamel sheet that drops because of peeled off by external force with the positive and negative that iron hammer knocks enameling sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110008360 CN102174698A (en) | 2011-01-17 | 2011-01-17 | Processes for rapidly repairing enamel liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110008360 CN102174698A (en) | 2011-01-17 | 2011-01-17 | Processes for rapidly repairing enamel liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102174698A true CN102174698A (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110008360 Pending CN102174698A (en) | 2011-01-17 | 2011-01-17 | Processes for rapidly repairing enamel liner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170794A (en) * | 2013-03-21 | 2013-06-26 | 安徽淮河化工股份有限公司 | Method of mending damage on non-clamping sleeve portion of enamel reaction kettle |
| CN105200423A (en) * | 2015-10-13 | 2015-12-30 | 浙江开尔新材料股份有限公司 | Splicing and cladding technology for enamel materials |
| CN107308894A (en) * | 2017-06-07 | 2017-11-03 | 湖北兴瑞化工有限公司 | A kind of enamel equipment repair technology |
| CN111360363A (en) * | 2020-04-28 | 2020-07-03 | 安徽马钢设备检修有限公司 | Manual gas welding repair device and repair process for large heat-resistant steel heating furnace door |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100254A (en) * | 1987-01-07 | 1988-07-20 | 青岛化工学院 | The method for repairing and mending of enamel chemical equipment enamel lining |
-
2011
- 2011-01-17 CN CN 201110008360 patent/CN102174698A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100254A (en) * | 1987-01-07 | 1988-07-20 | 青岛化工学院 | The method for repairing and mending of enamel chemical equipment enamel lining |
Non-Patent Citations (1)
| Title |
|---|
| > 20011231 张文生，赵剑，高勋 化工搪瓷设备的使用及维护 第27页第3.1部分 1－3 , 第9期 2 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170794A (en) * | 2013-03-21 | 2013-06-26 | 安徽淮河化工股份有限公司 | Method of mending damage on non-clamping sleeve portion of enamel reaction kettle |
| CN105200423A (en) * | 2015-10-13 | 2015-12-30 | 浙江开尔新材料股份有限公司 | Splicing and cladding technology for enamel materials |
| CN107308894A (en) * | 2017-06-07 | 2017-11-03 | 湖北兴瑞化工有限公司 | A kind of enamel equipment repair technology |
| CN107308894B (en) * | 2017-06-07 | 2019-04-23 | 湖北兴瑞硅材料有限公司 | A kind of enamel equipment repair technology |
| CN111360363A (en) * | 2020-04-28 | 2020-07-03 | 安徽马钢设备检修有限公司 | Manual gas welding repair device and repair process for large heat-resistant steel heating furnace door |
| CN111360363B (en) * | 2020-04-28 | 2023-09-29 | 安徽马钢设备检修有限公司 | Manual gas welding repair process for furnace door of large heat-resistant steel heating furnace |
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Application publication date: 20110907 |