CN110453045A - U-shaped heat exchange pipe bend heat treatment method - Google Patents
U-shaped heat exchange pipe bend heat treatment method Download PDFInfo
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- CN110453045A CN110453045A CN201910840495.1A CN201910840495A CN110453045A CN 110453045 A CN110453045 A CN 110453045A CN 201910840495 A CN201910840495 A CN 201910840495A CN 110453045 A CN110453045 A CN 110453045A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The invention discloses U-shaped heat exchange pipe bend heat treatment method, method and step is as follows: (1) manufacture heat treatment van-type furnace；(2) the horizontal paving strip heat-preservation cotton in open bottom before furnace body；(3) it is laid with one layer of straight pipe in furnace body and is pressed on the U-shaped set of heat exchange tubes in strip heat-preservation cotton, the U-shaped set of heat exchange tubes is successively neatly arranged around tiling by several U-shaped heat exchanger tubes, and is embedded with asbestos cord respectively between each two adjacent U-shaped heat exchanger tube straight pipes；(4) the sequence place mat multilayer that one layer of U-shaped set of heat exchange tubes has been repaved according to one layer of strip heat-preservation cotton is first spread on having spread U-shaped set of heat exchange tubes according to step 2 and step 3, up to furnace body to be paved with；(5) annular heat-preservation cotton is laid in opening on furnace body, then bell is placed on furnace body in opening；(6) each heating plate, which is powered, is heat-treated U-shaped heat exchange pipe bend.Above-mentioned U-shaped heat exchange pipe bend heat treatment method can facilitate and efficiently be heat-treated to U-shaped heat exchanger tube.
Description
Technical field
The present invention relates to U-shaped heat exchanger tube manufacturing fields, and in particular to the heat treatment method of U-shaped heat exchange pipe bend.
Background technique
For the elbow of U-shaped heat exchanger tube during brake forming on bending machine, elbow can generate internal stress, in elbow
Internal stress can reduce the service life of U-shaped heat exchanger tube, interior in elbow as the quality requirement to U-shaped heat exchanger tube is higher and higher
Stress cannot be ignored, generally use the mode of heat treatment to eliminate internal stress, but the both ends of some U-shaped heat exchanger tubes exist compared with
Long straight pipe, so the longer U-shaped heat exchanger tube of straight pipe can not be heat-treated in conventional heat-treatment furnace.
Summary of the invention
The technical problems to be solved by the present invention are: it is convenient and efficiently hot to the progress of U-shaped heat exchanger tube to provide a kind of energy
The U-shaped heat exchange pipe bend heat treatment method of processing.
To solve the above-mentioned problems, the technical scheme adopted by the invention is as follows: U-shaped exchange heat pipe bend heat treatment method,
Be characterized in that: method and step is as follows:
(1) heat treatment van-type furnace of the manufacture for U-shaped heat exchange pipe bend heat treatment, the structure of heat treatment van-type furnace includes: furnace body,
The front of furnace body and opened upper end setting, enable the elbow of U-shaped heat exchanger tube to be placed in furnace body from top to bottom, on a left side for furnace body
Inner wall, rear inner wall, is provided with heating plate for being heated to U-shaped heat exchange pipe bend on the inner wall of bottom at right inner wall, also wraps
It includes: for the bell covered open on furnace body；
(2) the strip heat-preservation cotton that horizontal one piece of paving can prevent furnace heat from being lost in open bottom before furnace body；
(3) one layer of straight pipe open protruding and straight pipe before furnace body is laid in furnace body to be pressed in strip heat-preservation cotton
U-shaped set of heat exchange tubes, the U-shaped set of heat exchange tubes is successively whole according to the sequence of bending radius from small to large by several U-shaped heat exchanger tubes
It is neat to be arranged around tiling, and between the adjacent U-shaped heat exchanger tube straight pipe of each two in the U-shaped set of heat exchange tubes respectively
It is embedded with one section of asbestos cord that furnace heat can be prevented to be lost being located above strip heat-preservation cotton；
(4) one layer of U-shaped is repaved according to first one layer of strip heat-preservation cotton of paving on having spread U-shaped set of heat exchange tubes according to step 2 and step 3
The sequence place mat multilayer of set of heat exchange tubes, until furnace body is paved with；The strip heat-preservation cotton spread afterwards and the strip heat-preservation cotton first spread
Consistency from top to bottom, the U-shaped set of heat exchange tubes spread afterwards and the U-shaped set of heat exchange tubes consistency from top to bottom first spread；
(5) annular heat-preservation cotton of the circle for preventing furnace heat from being lost is laid in opening on furnace body, is then placed on bell
On furnace body in opening；
(6) each heating plate, which is powered, carries out heating heat treatment to furnace intracorporal U-shaped heat exchange pipe bend.
Further, U-shaped heat exchange pipe bend heat treatment method above-mentioned, in which: heating plate is crawler type heating plate.
Further, U-shaped above-mentioned exchanges heat pipe bend heat treatment method, in which: the left inside wall of furnace body, right inner wall, after
The protective fence that can prevent U-shaped heat exchange pipe bend and heating plate from colliding is provided on inner wall, bottom inner wall.
Further, U-shaped heat exchange pipe bend heat treatment method above-mentioned, in which: further include: for detecting in-furnace temperature
Thermocouple.
Advantages of the present invention are as follows: U-shaped heat exchange pipe bend heat treatment method of the present invention is using after improved van-type furnace
Energy is convenient and is efficiently disposably heat-treated to the elbow of multiple U-shaped heat exchanger tubes, thus realizing to U-shaped heat exchange pipe bend
Heat treatment efficiency is also substantially increased while heat treatment.
Detailed description of the invention
Fig. 1 is that U-shaped of the present invention heat exchange pipe bend is heat-treated the overlooking structure diagram that van-type furnace does not cover bell.
Fig. 2 is the schematic cross-sectional view that U-shaped of the present invention heat exchange pipe bend is heat-treated van-type furnace.
Specific embodiment
The present invention is described in further detail with attached drawing combined with specific embodiments below.
U-shaped heat exchange pipe bend heat treatment method, method and step are as follows:
(1) heat treatment van-type furnace of the manufacture for U-shaped heat exchange pipe bend heat treatment, as shown in Figure 1 and Figure 2, heat treatment van-type furnace
Structure includes: furnace body 1, the front of furnace body 1 and opened upper end setting, and the elbow of U-shaped heat exchanger tube 2 is placed in from top to bottom
In furnace body 1, be provided on the left inside wall of furnace body 1, right inner wall, rear inner wall, bottom inner wall for 2 elbow of U-shaped heat exchanger tube into
The heating plate 3 of row heating, in the present embodiment, heating plate 3 is crawler type heating plate；Further include: for being carried out to open on furnace body 1
The bell 6 of capping and three are for detecting the thermocouple 8 of in-furnace temperature；
(2) the strip heat-preservation cotton 4 that horizontal one piece of paving can prevent furnace heat from being lost in open bottom before furnace body 1；
(3) it is laid with one layer of straight pipe open protruding and straight pipe before furnace body 1 in furnace body 1 and is pressed on strip heat-preservation cotton
U-shaped set of heat exchange tubes 9 on 4, the U-shaped set of heat exchange tubes 9 is by several sequences of U-shaped heat exchanger tube 2 according to bending radius from small to large
It is successively neat to be arranged around tiling, and 2 straight pipe of U-shaped heat exchanger tube that each two in the U-shaped set of heat exchange tubes 9 are adjacent
Between be embedded with one section of asbestos cord 5 that furnace heat can be prevented to be lost for being located at the top of strip heat-preservation cotton 4 respectively；
(4) one layer of U is repaved according to first one layer of strip heat-preservation cotton 4 of paving on having spread U-shaped set of heat exchange tubes 9 according to step 2 and step 3
The sequence place mat multilayer of shape set of heat exchange tubes 9, until furnace body 1 is paved with；The strip heat-preservation cotton 4 spread afterwards is protected with the strip first spread
Warm 4 consistency from top to bottom of cotton, the U-shaped set of heat exchange tubes 9 spread afterwards and 9 consistency from top to bottom of U-shaped set of heat exchange tubes first spread；
(5) annular heat-preservation cotton 41 of the circle for preventing furnace heat from being lost is laid in opening on furnace body 1, then by bell 6
It is placed on furnace body 1 in opening；
(6) each energization of heating plate 3 carries out heating heat treatment to 2 elbow of U-shaped heat exchanger tube in furnace body 1, and in-furnace temperature is by three
Thermocouple 8 is fed back.
In the present embodiment, U-shaped can be prevented by being provided on the left inside wall of furnace body 1, right inner wall, rear inner wall, bottom inner wall
The protective fence 7 that 2 elbow of heat exchanger tube and heating plate 3 collide.
Claims (4)
1.U shape heat exchange pipe bend heat treatment method, it is characterised in that: method and step is as follows:
(1) heat treatment van-type furnace of the manufacture for U-shaped heat exchange pipe bend heat treatment, the structure of heat treatment van-type furnace includes: furnace body,
The front of furnace body and opened upper end setting, enable the elbow of U-shaped heat exchanger tube to be placed in furnace body from top to bottom, on a left side for furnace body
Inner wall, rear inner wall, is provided with heating plate for being heated to U-shaped heat exchange pipe bend on the inner wall of bottom at right inner wall, also wraps
It includes: for the bell covered open on furnace body；
(2) the strip heat-preservation cotton that horizontal one piece of paving can prevent furnace heat from being lost in open bottom before furnace body；
(3) one layer of straight pipe open protruding and straight pipe before furnace body is laid in furnace body to be pressed in strip heat-preservation cotton
U-shaped set of heat exchange tubes, the U-shaped set of heat exchange tubes is successively whole according to the sequence of bending radius from small to large by several U-shaped heat exchanger tubes
It is neat to be arranged around tiling, and between the adjacent U-shaped heat exchanger tube straight pipe of each two in the U-shaped set of heat exchange tubes respectively
It is embedded with one section of asbestos cord that furnace heat can be prevented to be lost being located above strip heat-preservation cotton；
(4) one layer of U-shaped is repaved according to first one layer of strip heat-preservation cotton of paving on having spread U-shaped set of heat exchange tubes according to step 2 and step 3
The sequence place mat multilayer of set of heat exchange tubes, until furnace body is paved with；The strip heat-preservation cotton spread afterwards and the strip heat-preservation cotton first spread
Consistency from top to bottom, the U-shaped set of heat exchange tubes spread afterwards and the U-shaped set of heat exchange tubes consistency from top to bottom first spread；
(5) annular heat-preservation cotton of the circle for preventing furnace heat from being lost is laid in opening on furnace body, is then placed on bell
On furnace body in opening；
(6) each heating plate, which is powered, carries out heating heat treatment to furnace intracorporal U-shaped heat exchange pipe bend.
The pipe bend heat treatment method 2. U-shaped according to claim 1 exchanges heat, it is characterised in that: heating plate adds for crawler type
Hot plate.
The pipe bend heat treatment method 3. U-shaped according to claim 1 exchanges heat, it is characterised in that: in the left inside wall of furnace body, the right side
Inner wall, is provided with the protective fence that can prevent U-shaped heat exchange pipe bend and heating plate from colliding on the inner wall of bottom at rear inner wall.
The pipe bend heat treatment method 4. U-shaped according to claim 1 exchanges heat, it is characterised in that: further include: for detecting furnace
The thermocouple of interior temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910840495.1A CN110453045B (en) | 2019-09-06 | 2019-09-06 | Heat treatment method for U-shaped heat exchange tube elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910840495.1A CN110453045B (en) | 2019-09-06 | 2019-09-06 | Heat treatment method for U-shaped heat exchange tube elbow |
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| Publication Number | Publication Date |
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| CN110453045A true CN110453045A (en) | 2019-11-15 |
| CN110453045B CN110453045B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910840495.1A Active CN110453045B (en) | 2019-09-06 | 2019-09-06 | Heat treatment method for U-shaped heat exchange tube elbow |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10121127A (en) * | 1996-10-09 | 1998-05-12 | Chugai Ro Co Ltd | Gas cooler of shifting between two chambers |
| CN102080150A (en) * | 2011-02-23 | 2011-06-01 | 上海华钢不锈钢有限公司 | Device for eliminating internal stress of U-shaped bent pipe by performing heating and annealing |
| CN106086371A (en) * | 2016-06-16 | 2016-11-09 | 江苏武进不锈股份有限公司 | U-bend destressing device |
| CN206094923U (en) * | 2016-08-29 | 2017-04-12 | 哈尔滨理工大学 | But box furnace of even heating |
| CN206319037U (en) * | 2016-11-18 | 2017-07-11 | 惠州市鹏盛峰实业有限公司 | A kind of furnace binding of the heat-treatment furnace of extrusion die |
| CN108165718A (en) * | 2016-12-07 | 2018-06-15 | 阜新华通管道有限公司 | Power station large size bend pipe annealing device |
| CN207606132U (en) * | 2017-12-07 | 2018-07-13 | 潍坊金健钛设备有限公司 | A kind of U-shaped bend pipe heat setting device of alloy |
-
2019
- 2019-09-06 CN CN201910840495.1A patent/CN110453045B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10121127A (en) * | 1996-10-09 | 1998-05-12 | Chugai Ro Co Ltd | Gas cooler of shifting between two chambers |
| CN102080150A (en) * | 2011-02-23 | 2011-06-01 | 上海华钢不锈钢有限公司 | Device for eliminating internal stress of U-shaped bent pipe by performing heating and annealing |
| CN106086371A (en) * | 2016-06-16 | 2016-11-09 | 江苏武进不锈股份有限公司 | U-bend destressing device |
| CN206094923U (en) * | 2016-08-29 | 2017-04-12 | 哈尔滨理工大学 | But box furnace of even heating |
| CN206319037U (en) * | 2016-11-18 | 2017-07-11 | 惠州市鹏盛峰实业有限公司 | A kind of furnace binding of the heat-treatment furnace of extrusion die |
| CN108165718A (en) * | 2016-12-07 | 2018-06-15 | 阜新华通管道有限公司 | Power station large size bend pipe annealing device |
| CN207606132U (en) * | 2017-12-07 | 2018-07-13 | 潍坊金健钛设备有限公司 | A kind of U-shaped bend pipe heat setting device of alloy |
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| CN110453045B (en) | 2021-05-18 |
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