CN208883944U - Boiler heating surface pin post weld heat treatment special tooling - Google Patents
Boiler heating surface pin post weld heat treatment special tooling Download PDFInfo
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- CN208883944U CN208883944U CN201821578728.2U CN201821578728U CN208883944U CN 208883944 U CN208883944 U CN 208883944U CN 201821578728 U CN201821578728 U CN 201821578728U CN 208883944 U CN208883944 U CN 208883944U
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- heating surface
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- bracket
- heater
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Abstract
The utility model relates to soldering technologies, specifically boiler heating surface pin post weld heat treatment special tooling comprising two caterpillar heaters, at least a pair of of armoured thermocouple and at least two groups bracket for placing heater；Each pair of thermocouple is arranged symmetrically in the case where any one pin root of heating surface is presented, and the thermocouple is connect by iron wire with pin root, and the iron wire is wrapped on two pin roots；Two heaters are individually positioned in the two sides up and down of heating surface to be processed.This tooling is arranged using modularization, and multiple groups device can be assembled into one as needed, meets the different situation of heat treatment length in construction, this tooling is easy to manufacture, solid and reliable, low cost, the advantages such as easy to carry.
Description
Technical field
The utility model relates to soldering technology, at specifically a kind of circulating fluidized bed boiler heating surface pin postwelding heat
Manage special tooling.
Background technique
In thermal power plant construction, medium temperature overheater, high temperature superheater and the high temperature reheater pipe of fluidized-bed combustion boiler
It is 12Cr18Ni9 for SA213-T91, pin material, ground combination needs to be heat-treated after carrying out pin welding.Boiler heating surface
When being heat-treated after pin welding, mode fixed heater fixed frequently with local support or fixture at present is easy by gravity, leads to
Factor that electric heating is swollen tenesmus, can not be bonded closely with heating surface pin；Local heat treatmet is carried out on ultra-wide heating surface uses fixture
The operation difficulty of device fixed heater is larger.Often because operating difficulties, fixed effect not by force caused by be heat-treated heater de-
It falls, temperature measures the problems such as inaccurate.
In the prior art primarily directed to the research of the arc stud welding before heat treatment, however SA-213T91 and 12Cr18Ni9 is sold
When nail welding, SA-213T91 steel are more sensitive to heat input, and hardenability is big, and crackle tendency is big.Pin weld heat input is excessive
It can be easy to happen crackle, therefore be heat-treated after pin welds.Heat treatment work is welded in pin both at home and abroad at present
Blank is substantially belonged in terms of skill research.Existing technical solution: after pin welds, 300 DEG C -400 is heated to using flame
Slow cooling is carried out using heat-preservation cotton after DEG C half an hour.Using flame heat its warming and cooling rate be unable to control, heat treatment temperature it is uneven
It is even, constant temperature effect is bad in the external environment, and be affected by human factors, heat treatment process be unsatisfactory for ASME standard for
The welding of 91 materials has to carry out process of thermal treatment requirement, is also easy to produce crackle, while because heat treatment heating unevenness is deformed
Or base material damage.
Utility model content
To solve the above-mentioned problems, the utility model provides at a kind of circulating fluidized bed boiler heating surface pin postwelding heat
Special tooling is managed, the technical solution adopted in the utility model is as follows:
Boiler heating surface pin post weld heat treatment special tooling, including two caterpillar heaters, at least a pair of of armouring
Thermocouple and at least two groups bracket for placing heater；
Each pair of thermocouple is arranged symmetrically in the case where any one pin root of heating surface is presented, and the thermocouple passes through iron
Silk is connect with pin root, and the iron wire is wrapped on two pin roots；Two heaters are individually positioned in be processed
The two sides up and down of heating surface；
The bracket includes the supporting leg that horizontally disposed bracket and two are connected to bracket front and rear sides vertically respectively, described
Supporting leg includes horizontal support pedestal, connecting rod, two adjustment bolts and the attachment beam being spirally connected with bracket, two adjustment spiral shells
Bolt is symmetrically screwed onto the upper and lower ends of connecting rod, and the adjustment bolt of lower section is connect with pedestal.
Above-mentioned boiler heating surface pin post weld heat treatment special tooling, the bracket are frame structure, the heater rule
Lattice select 10KW, and the outside of the heater is equipped with heat-preservation cotton, and the heater is connect with heat treatment power frequency machine to heat.
Using above-mentioned special tooling to the heat treatment method of boiler heating surface pin postwelding, include the following steps:
S1 selects two pairs of armoured thermocouples, and two terminals of each pair of armoured thermocouple are fixed with iron wire in right up and down respectively
Title is arranged in pin root；
S2 is laid with heater in the top and bottom of heating surface to envelope heating surface pin, envelopes heater with heat-preservation cotton
After be placed on bracket；
Armoured thermocouple is respectively connected to heat treatment power frequency machine by conducting wire by thermometric line, heater by S3, in Re Chu
Heat treatment process parameter is inputted on science and engineering frequency machine, is first heated up with the speed of 105 ~ 120 DEG C/h, in 730 ~ 760 DEG C of range inside holdings
At least one hour, after being then cooled to 300 DEG C with the speed of 130 ~ 150 DEG C/h, close heat treatment power frequency machine.
The utility model has the following beneficial effects:
This tooling is arranged using modularization, and multiple groups device can be assembled into one as needed, meets in construction and is heat-treated
The different situation of length, this tooling is easy to manufacture, solid and reliable, low cost, the advantages such as easy to carry.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the utility model embodiment bracket；
Fig. 2 is the schematic front view of the utility model embodiment bracket；
Fig. 3 is the schematic top plan view of the utility model embodiment bracket；
Fig. 4 is the condition of heat treatment schematic front view of the utility model embodiment；
Fig. 5 is the installation of TC schematic diagram of the utility model embodiment；
Fig. 6 is the position of thermocouple schematic cross-section of the utility model embodiment；
Fig. 7 is the installation of TC point enlarged diagram of the utility model embodiment；
Fig. 8 is the heater scheme of installation figure of the utility model embodiment；
Fig. 9 is the heat treatment process parameter figure of the utility model embodiment.
In figure: 1 being supporting leg, 11 be pedestal, 12 be connecting rod, 13 be adjustment bolt, 14 be attachment beam, 2 be bracket, 3 be guarantor
Wen Mian, 4 be heater, 5 be heating surface, 6 be pin, 7 be armoured thermocouple, 8 be iron wire, 9 be fin.
Specific embodiment
The utility model is further explained with reference to the accompanying drawing.
The present embodiment boiler heating surface pin post weld heat treatment special tooling, including two 4, two pairs of caterpillar heaters
Three pack supports to armoured thermocouple 7 and for placing heater 4；In conjunction with Fig. 5 and Fig. 6, about 5 heating surface is welded with several
Pin is connected by fin 9 between adjacent heating surface 5.
In conjunction with Fig. 7, each pair of thermocouple 7 is arranged symmetrically in the case where any one pin root of heating surface is presented, the heat
Galvanic couple 7 is connect by iron wire 8 with pin root, and the iron wire 8 is wrapped on two pin roots；Two heaters 4 divide
It is not placed on the two sides up and down of heating surface to be processed；
The bracket includes the supporting leg 1 that horizontally disposed bracket 2 and two are connected to 2 front and rear sides of bracket vertically respectively,
The attachment beam 14 that the supporting leg 1 includes horizontal support pedestal 11, connecting rod 12, two adjustment bolts 13 and be spirally connected with bracket 2,
Two adjustment bolts 13 are symmetrically screwed onto the upper and lower ends of connecting rod 12, and the adjustment bolt 13 of lower section is connect with pedestal 11.
The bracket 2 is frame structure, and 4 specification of heater selects 10KW, and the outside of the heater 4 is equipped with heat preservation
Cotton 3, the heater 4 are connect with heat treatment power frequency machine to heat.
Embodiment one
Using above-mentioned special tooling to the heat treatment method of boiler heating surface pin postwelding, include the following steps:
S1 selects two pairs of armoured thermocouples 7, and two terminals of each pair of armoured thermocouple 7 are presented with the fixation of iron wire 8 respectively
Under be symmetrically arranged in pin root；
S2 is laid with heater 4 in the top and bottom of heating surface to envelope heating surface pin, envelopes heating with heat-preservation cotton 3
It is placed on bracket after device 4；
Armoured thermocouple 7 is respectively connected to heat treatment power frequency machine by conducting wire by thermometric line, heater 4 by S3, in heat
Heat treatment process parameter is inputted on processing power frequency machine, is first heated up with the speed of 110 DEG C/h, keeps the temperature 1 ~ 2 hour at 750 DEG C, then
After being cooled to 300 DEG C with the speed of 140 DEG C/h, heat treatment power frequency machine is closed.
Embodiment two
The difference of the present embodiment and above-described embodiment one is heat treatment process parameter: first heated up with the speed of 120 DEG C/h,
1.5 hours are kept the temperature at 760 DEG C, after being then cooled to 300 DEG C with the speed of 150 DEG C/h, closes heat treatment power frequency machine.
Embodiment three
The difference of the present embodiment and above-described embodiment one is heat treatment process parameter: first heated up with the speed of 105 DEG C/h,
3 hours are kept the temperature at 730 DEG C, after being then cooled to 300 DEG C with the speed of 130 DEG C/h, closes heat treatment power frequency machine.
Claims (2)
1. boiler heating surface pin post weld heat treatment special tooling, it is characterised in that: including two caterpillar heaters (4),
At least a pair of of armoured thermocouple (7) and at least two groups bracket for placing heater (4)；
Each pair of thermocouple (7) is arranged symmetrically in the case where any one pin root of heating surface is presented, and the thermocouple (7) passes through
Iron wire (8) is connect with pin root, and the iron wire (8) is wrapped on two pin roots；Two heaters (4) are put respectively
It sets in the two sides up and down of heating surface to be processed；
The bracket includes the supporting leg that horizontally disposed bracket (2) and two are connected to bracket (2) front and rear sides vertically respectively
(1), the supporting leg (1) include horizontal support pedestal (11), connecting rod (12), two adjustment bolts (13) and with bracket (2)
The attachment beam (14) being spirally connected, two adjustment bolts (13) are symmetrically screwed onto the upper and lower ends of connecting rod (12), the adjustment of lower section
Bolt (13) is connect with pedestal (11).
2. boiler heating surface pin post weld heat treatment special tooling according to claim 1, it is characterised in that: the bracket
It (2) is frame structure, heater (4) specification selects 10KW, and the outside of the heater (4) is equipped with heat-preservation cotton (3), described
Heater (4) is connect with heat treatment power frequency machine to heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821578728.2U CN208883944U (en) | 2018-09-27 | 2018-09-27 | Boiler heating surface pin post weld heat treatment special tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821578728.2U CN208883944U (en) | 2018-09-27 | 2018-09-27 | Boiler heating surface pin post weld heat treatment special tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208883944U true CN208883944U (en) | 2019-05-21 |
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ID=66514116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821578728.2U Active CN208883944U (en) | 2018-09-27 | 2018-09-27 | Boiler heating surface pin post weld heat treatment special tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208883944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977647A (en) * | 2018-09-27 | 2018-12-11 | 中国电建集团山东电力建设第工程有限公司 | Boiler heating surface pin post weld heat treatment special tooling and heat treatment method |
-
2018
- 2018-09-27 CN CN201821578728.2U patent/CN208883944U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977647A (en) * | 2018-09-27 | 2018-12-11 | 中国电建集团山东电力建设第工程有限公司 | Boiler heating surface pin post weld heat treatment special tooling and heat treatment method |
| CN108977647B (en) * | 2018-09-27 | 2023-09-22 | 中国电建集团山东电力建设第一工程有限公司 | Special tool for post-welding heat treatment of boiler heating surface pin and heat treatment method |
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