CN106376113A - Manufacturing method for sand-blasted fin electric heating pipe assembly - Google Patents
Manufacturing method for sand-blasted fin electric heating pipe assembly Download PDFInfo
- Publication number
- CN106376113A CN106376113A CN201610820967.3A CN201610820967A CN106376113A CN 106376113 A CN106376113 A CN 106376113A CN 201610820967 A CN201610820967 A CN 201610820967A CN 106376113 A CN106376113 A CN 106376113A
- Authority
- CN
- China
- Prior art keywords
- electric heating
- heating tube
- heating pipe
- tube component
- resistance wire
- 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
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/017—Manufacturing methods or apparatus for heaters
Abstract
The invention relates to a manufacturing method for a sand-blasted fin electric heating pipe assembly. The manufacturing method comprises the following steps of 1) winding an resistance wire with a preset length; 2) setting a resistance wire assembly into a metal pipe; 3) performing pipe contracting on the electric heating pipe assembly through a pipe contracting machine based on preset dimension; 4) performing pre-starting on the electric heating pipe assembly contracted in the step (3), then closing the electric heating pipe assembly and performing sand-blasting processing on the surface of the eclectic heating pipe assembly, and performing high-temperature processing on the sand-blasted electric heating pipe assembly; and 5) and performing sealing treatment on the electric heating pipe assembly which is subjected to high-temperature processing in the step 4) to complete the manufacturing of the electric heating pipe. According to the manufacturing method, the step of pre-starting is performed; hydrate in the magnesium oxide powder is decomposed through the electric heating pipe assembly; then the electric heating pipe assembly is subjected to surface sand blasting to enlarge the heat dissipation area; and meanwhile, the surface is covered with sand which is silicon dioxide through the high-temperature process in the subsequent process to form a protection layer, so that the metal pipe material performance is improved.
Description
Technical field
The present invention relates to a kind of manufacture method of the fin electric heating tube component of sandblasting.
Background technology
The surface loading of electric heating tube refers to the power (w/cm2) that electric heating tube unit heating area is born, and this is electricity
Heating tube in working order under electrical safety performance and service life index.The surface loading of electric heating tube is in jb/
All made specific regulation in bis- parts of standards of t4088-1999 and jb/t2379-1993, when the material of electric heating tube, diameter,
In the case that length, heating medium are fixed, the maximum service rating of electric heating tube also just substantially determines.In electric heating tube
When surface loading is higher than standard, electric heating tube operationally arises that heating wire blows or electric heating pipe surface is rubescent, overheated burning
The phenomenon such as ruin.When the operating power needing to improve electric heating tube again, it is necessary for size (length, the pipe of electric heating tube to be increased
Footpath) or change the material (with the higher stainless steel tube material of nickel content or adopt import stainless steel tube) of electric heating tube, so that table
Face load can be adapted therewith.The manufacturing cost that electric heating tube so will certainly be improved and the installation increasing electric heater are empty
Between, also some sparser metal materials and resource are caused to waste.
Content of the invention
The technical problem to be solved in the present invention is, not enough for prior art, proposes a kind of pretrigger and in outer surface spray
The manufacture method of the fin electric heating tube component of the sandblasting of sand.
The present invention in order to solve the technical scheme of above-mentioned technical problem proposition is: a kind of fin electric heating tube component of sandblasting
Manufacture method, the method execute following steps:
1) resistance wire of coiling one preset length, this resistance wire is fixed on magnesia tube pedestal, then by described resistance wire
Fixation is set in excellent the reaching the standard grade on position of two leads respectively at two ends, obtains resistance wire assembly；
2) described resistance wire assembly in a metal tube, and add magnesia powder using powder feeding machine in described metal tube,
Then shaken powder using the powder machine that shakes, obtain the blank of electric heating tube component；
3) using machine for shrinking, by pre-set dimension, the draw is carried out to described electric heating tube component so that the inwall of metal tube and described oxygen
Change magnesium base into contact；
4) pretrigger is carried out to the electric heating tube component after the draw in step 3), make electric heating tube component temperature reach 300 DEG C
400 DEG C, this electric heating tube component is closed, and blasting treatment is carried out to surface, the electric heating tube component after blasting treatment is entered
Row high-temperature process, described high-temperature process is that this electric-heating assembly is carried out with high temperature bright process or high-temperature ammonolysis process or high temperature
Oxidation processes；
5) in step 4) through high-temperature process electric heating tube component metal tube outer helical winding strip radiating fin
Piece simultaneously carries out sealing treatment, completes the making of electric heating tube；
Described magnesium oxide pedestal is cuboid column, and the side wall of described cuboid column is provided with winding displacement hole.
The improvement of technique scheme is: described high temperature bright process be by semi-finished product n2 and h2 mixed gas gas
It is heated to the process that 1040-1080 DEG C (± 10 DEG C) are carried out under atmosphere.
The improvement of technique scheme is: it is with n2 as protective atmosphere that described high-temperature ammonolysis are processed, and semi-finished product are heated
The process carrying out to 1040-1080 DEG C (± 10 DEG C).
The improvement of technique scheme is: includes dripping silicone oil just tube sealing mouth operation in step 5) closing step, that is, in high temperature
The electric heating tube component processing instills some silicone oil in the mouth of pipe after coming out of the stove as early as possible, makes silicone oil penetrate into magnesia powder end, substantial powder
The space of intergranular.
The improvement of technique scheme is: when resistance wire being fixed on described magnesia tube pedestal in step 1), along described
The length direction of magnesia tube pedestal longitudinal via from top to bottom, then this resistance wire is passed through the winding displacement hole on other length directions
Until meet and making needs or completely extend across all winding displacement holes on described magnesia tube pedestal.
The present invention using the beneficial effect of technique scheme is: using pretrigger utilize electric heating tube component themselves such that
Decomposition of hydrate in magnesia powder, utilizes step afterwards to its surface sand-blasting to improve its area of dissipation afterwards simultaneously
It is that silicon dioxide is covered in surface that high-temperature technology makes sand, forms a protective layer, improves metal tube material capability, improve
The overall performance of electric heating tube.
The present invention installs radiating fin after pretrigger, prevents heat losses in pre-boot process from excessively not reaching predetermined
Effect, it is to avoid temperature mistake, aoxidizes during process in atmosphere.
Specific embodiment
Embodiment
A kind of manufacture method of the fin electric heating tube component of the sandblasting of the present embodiment, the method execution following steps:
1) resistance wire of coiling one preset length, this resistance wire is fixed on magnesia tube pedestal, then by the two ends of resistance wire
Fixation is set in excellent the reaching the standard grade on position of two leads respectively, obtains resistance wire assembly；
2) resistance wire assembly in a metal tube, and add magnesia powder using powder feeding machine in metal tube, then adopt
The powder machine that shakes shakes powder, obtains the blank of electric heating tube component；
3) using machine for shrinking, by pre-set dimension, the draw is carried out to electric heating tube component so that the inwall of metal tube and magnesium oxide pedestal
Contact；
4) pretrigger is carried out to the electric heating tube component after the draw in step 3), make electric heating tube component temperature reach 300 DEG C
400 DEG C, this electric heating tube component is closed, and blasting treatment is carried out to surface, the electric heating tube component after blasting treatment is entered
Row high-temperature process, high-temperature process is that this electric-heating assembly is carried out with high temperature bright process or high-temperature ammonolysis process or high-temperature oxydation
Process；
5) in step 4) through high-temperature process electric heating tube component metal tube outer helical winding strip radiating fin
Piece simultaneously carries out sealing treatment, completes the making of electric heating tube；
Magnesium oxide pedestal is cuboid column, and the side wall of cuboid column is provided with winding displacement hole.
The present embodiment high temperature bright process be that semi-finished product are heated to 1040- under the atmosphere of n2 and h2 mixed gas
The process that 1080 DEG C (± 10 DEG C) are carried out.
The present embodiment high-temperature ammonolysis process be with n2 as protective atmosphere, by semi-finished product be heated to 1040-1080 DEG C (±
10 DEG C) process that carries out.
The present embodiment include dripping silicone oil just tube sealing mouth operation in step 5) closing step, that is, in the electrical heating of high-temperature process
Tube assembly instills some silicone oil in the mouth of pipe after coming out of the stove as early as possible, makes silicone oil penetrate into magnesia powder end, the space between substantial powder.
When resistance wire being fixed on magnesia tube pedestal in the step 1) of the present embodiment, along the length side of magnesia tube pedestal
To longitudinal via from top to bottom, then this resistance wire is passed through winding displacement hole on other length directions until meet make needs or
All winding displacement holes on magnesia tube pedestal are completely extended across.
The present invention is not limited to above-described embodiment.The technical scheme that all employing equivalents are formed, all falling within the present invention will
The protection domain asked.
Claims (5)
1. a kind of fin electric heating tube component of sandblasting manufacture method it is characterised in that the method execution following steps:
1) resistance wire of coiling one preset length, this resistance wire is fixed on magnesia tube pedestal, then by described resistance wire
Fixation is set in excellent the reaching the standard grade on position of two leads respectively at two ends, obtains resistance wire assembly；
2) described resistance wire assembly in a metal tube, and add magnesia powder using powder feeding machine in described metal tube,
Then shaken powder using the powder machine that shakes, obtain the blank of electric heating tube component；
3) using machine for shrinking, by pre-set dimension, the draw is carried out to described electric heating tube component so that the inwall of metal tube and described oxygen
Change magnesium base into contact；
4) pretrigger is carried out to the electric heating tube component after the draw in step 3), make electric heating tube component temperature reach 300 DEG C
400 DEG C, this electric heating tube component is closed, and blasting treatment is carried out to surface, the electric heating tube component after blasting treatment is entered
Row high-temperature process, described high-temperature process is that this electric-heating assembly is carried out with high temperature bright process or high-temperature ammonolysis process or high temperature
Oxidation processes；
5) in step 4) through high-temperature process electric heating tube component metal tube outer helical winding strip radiating fin
Piece simultaneously carries out sealing treatment, completes the making of electric heating tube；
Described magnesium oxide pedestal is cuboid column, and the side wall of described cuboid column is provided with winding displacement hole.
2. the fin electric heating tube component of sandblasting according to claim 1 manufacture method it is characterised in that: described height
It is that semi-finished product are heated under the atmosphere of n2 and h2 mixed gas the place that 1040-1080 DEG C (± 10 DEG C) are carried out that temperature light is processed
Reason.
3. the fin electric heating tube component of sandblasting according to claim 1 manufacture method it is characterised in that: described height
Warm nitrogen treatment is with n2 as protective atmosphere, and semi-finished product are heated to the process that 1040-1080 DEG C (± 10 DEG C) are carried out.
4. the fin electric heating tube component of sandblasting according to claim 1 manufacture method it is characterised in that: in step 5)
Closing step includes dripping silicone oil just tube sealing mouth operation, instills in the mouth of pipe as early as possible after the electric heating tube component of high-temperature process is come out of the stove
Some silicone oil, make silicone oil penetrate into magnesia powder end, the space between substantial powder.
5. the fin electric heating tube component of sandblasting according to claim 1 manufacture method it is characterised in that: in step 1)
When resistance wire is fixed on described magnesia tube pedestal, along length direction longitudinal mistake from top to bottom of described magnesia tube pedestal
Hole, then this resistance wire is passed through the winding displacement hole on other length directions make needs or by described magnesia tube base until meeting
All winding displacement holes on seat completely extend across.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820967.3A CN106376113A (en) | 2016-09-14 | 2016-09-14 | Manufacturing method for sand-blasted fin electric heating pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820967.3A CN106376113A (en) | 2016-09-14 | 2016-09-14 | Manufacturing method for sand-blasted fin electric heating pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106376113A true CN106376113A (en) | 2017-02-01 |
Family
ID=57897308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610820967.3A Pending CN106376113A (en) | 2016-09-14 | 2016-09-14 | Manufacturing method for sand-blasted fin electric heating pipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106376113A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19600069C2 (en) * | 1996-01-03 | 2002-07-11 | Walther Menhardt | Electric PTC radiator |
| CN101150895A (en) * | 2006-09-19 | 2008-03-26 | 陈国忠 | Making method for uniform electric heating tube |
| CN101340745A (en) * | 2008-08-29 | 2009-01-07 | 镇江东方电热有限公司 | Method for enhancing performance of electric heating tube |
| CN101407903A (en) * | 2008-11-20 | 2009-04-15 | 镇江市东方制冷空调设备配件有限公司 | Method for improving surface load of electric heating tube |
| CN201328435Y (en) * | 2008-12-29 | 2009-10-21 | 成都市兴岷江电热电器有限责任公司 | Electric heater for shoe-making machine |
| CN102528394A (en) * | 2011-12-27 | 2012-07-04 | 乐清市海狮电热电器制造有限公司 | Manufacturing method of electric heating push rod of electronic thermostat of engine |
| CN102536418A (en) * | 2011-12-27 | 2012-07-04 | 乐清市海狮电热电器制造有限公司 | Electro-thermal push bar for electronic thermostat of engine |
| CN102595670A (en) * | 2012-02-13 | 2012-07-18 | 江苏顺发电热材料有限公司 | Electric heating pipe and manufacturing method thereof |
| CN102883481A (en) * | 2012-09-25 | 2013-01-16 | 中国船舶重工集团公司第七一八研究所 | High-temperature-resistant double-helix coil type heating element |
| CN105657873A (en) * | 2014-08-27 | 2016-06-08 | 陈亮 | Double-winding resistance wire and manufacture process for making same into heating tube |
-
2016
- 2016-09-14 CN CN201610820967.3A patent/CN106376113A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19600069C2 (en) * | 1996-01-03 | 2002-07-11 | Walther Menhardt | Electric PTC radiator |
| CN101150895A (en) * | 2006-09-19 | 2008-03-26 | 陈国忠 | Making method for uniform electric heating tube |
| CN101340745A (en) * | 2008-08-29 | 2009-01-07 | 镇江东方电热有限公司 | Method for enhancing performance of electric heating tube |
| CN101407903A (en) * | 2008-11-20 | 2009-04-15 | 镇江市东方制冷空调设备配件有限公司 | Method for improving surface load of electric heating tube |
| CN201328435Y (en) * | 2008-12-29 | 2009-10-21 | 成都市兴岷江电热电器有限责任公司 | Electric heater for shoe-making machine |
| CN102528394A (en) * | 2011-12-27 | 2012-07-04 | 乐清市海狮电热电器制造有限公司 | Manufacturing method of electric heating push rod of electronic thermostat of engine |
| CN102536418A (en) * | 2011-12-27 | 2012-07-04 | 乐清市海狮电热电器制造有限公司 | Electro-thermal push bar for electronic thermostat of engine |
| CN102595670A (en) * | 2012-02-13 | 2012-07-18 | 江苏顺发电热材料有限公司 | Electric heating pipe and manufacturing method thereof |
| CN102883481A (en) * | 2012-09-25 | 2013-01-16 | 中国船舶重工集团公司第七一八研究所 | High-temperature-resistant double-helix coil type heating element |
| CN105657873A (en) * | 2014-08-27 | 2016-06-08 | 陈亮 | Double-winding resistance wire and manufacture process for making same into heating tube |
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Application publication date: 20170201 |
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