CN101239383B - Casting parts thermal insulation pit - Google Patents
Casting parts thermal insulation pit Download PDFInfo
- Publication number
- CN101239383B CN101239383B CN2008100493751A CN200810049375A CN101239383B CN 101239383 B CN101239383 B CN 101239383B CN 2008100493751 A CN2008100493751 A CN 2008100493751A CN 200810049375 A CN200810049375 A CN 200810049375A CN 101239383 B CN101239383 B CN 101239383B
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- China
- Prior art keywords
- thermal insulation
- air
- pit
- sidewall
- casting parts
- 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.)
- Expired - Fee Related
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 26
- 238000005266 casting Methods 0.000 title claims description 15
- 239000000155 melt Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a cast thermal insulation ground pit, comprising a ground pit body with a movable cover plate built with concrete. A bearing thermal insulation layer is applied on the bottom of the ground pit, and a flame-proof thermal insulation layer is disposed on the side wall. A plurality of vents with covers are disposed on the movable cover plate, and an air vent and an air-return vent, both of which communicate with a circulating hot-air device via an air pipe and an air return pipe, are disposed on the side wall of the ground pit. Not only the empty cast thermal insulation ground pit can be heated to a required temperature quickly and evenly before the casts are hung in, but also the temperature around the cast can be kept even to the end after the casts are hung in, and cooling-curve request is satisfied completely. When the ground pit is used, the heating-up temperature is adjustable in the range of 0-650 DEG C, the heating-up velocity is adjustable in the range of 50-100 DEG C/h, the cooling velocity is adjustable in the range of 10-50 DEG C/h, and temperature uniformity in pit is +-20 DEG C. Case opening period is shortened by 30 days, so that the production period is greatly shortened.
Description
Technical field
The present invention relates to the casting parts thermal insulation pit used behind the heavy castings hot shake-out.
Background technology
(casting weight as 4 * 6 * 2.5m3 can reach 100 tons to heavy castings, bigger even weigh more than 400 tons) cooling of casting back is very slow, especially after dropping to 500-700 ℃, cooling rate is slower, it is long (if temperature is too high during shake out to take the operation place time, foundry goods is easy to generate crackle, directly influences product quality), at this problem, guaranteeing under the product quality premise, for improving the turnover rate in operation place, adopt hot shake-out, fast foundry goods is put into thermal insulation pit then, inwardly spray into flame by the through hole on the thermal insulation pit upper cover plate and heat cooling, by manually opening cover plate control temperature,, adopt combustion gas directly to heat when lowering the temperature during to low temperature owing to heat though this method can make the shake out time of heavy castings shorten greatly, the flame temperature height, and do not have hot air circulating system, make that the foundry goods local temperature is too high, poor temperature uniformity, be difficult to satisfy the temperature lowering curve requirement, by the Artificial Control cover plate, operation inconvenience can't guarantee temperature lowering curve and temperature homogeneity during low temperature.
Summary of the invention
The object of the present invention is to provide a kind of casting parts thermal insulation pit that can control cooling according to temperature lowering curve.
For achieving the above object, the present invention can take following technical proposals:
Casting parts thermal insulation pit of the present invention comprises the melt pit body by concrete masonry units that has removable cover, is equipped with the carrying thermal insulation layer on the diapire of described melt pit body, and sidewall is provided with refractory insulating layer; On described removable cover, offer a plurality of air vents that have capping, on the sidewall of described melt pit body, offer give, return air inlet, describedly give, return air inlet by give, backwind tube is connected with the circulating air device; Described circulating air device is formed by vacuum chamber, circulation air compartment and the connection of malleation chamber, and it is indoor that the fan blade of circulating fan is arranged on circulated air; The outlet of described malleation chamber is connected with the air-supply mouth of pipe, and the import of vacuum chamber is connected with the return air mouth of pipe, is provided with heater in the vacuum chamber and mends the wind heat sink.
Described heater is that electrical heating elements is or/and the combustion chamber.
Refractory insulating layer on the described sidewall is the refractory fibre heat-insulation layer.
The air outlet place that offers on described melt pit body sidewall is provided with wind deflector.
The invention has the advantages that on the sidewall of melt pit body, offer give, return air inlet, describedly give, return air inlet by give, backwind tube is connected with the circulating air device; The temperature that so not only can be before foundry goods hangs in that it(?) fast will vacant melt pit body evenly be heated to requirement can also make all the time after foundry goods hangs in that to be looped around foundry goods temperature all around even, can satisfy the temperature lowering curve requirement fully; The circulating air device is formed by vacuum chamber, circulation air compartment and the connection of malleation chamber, and it is indoor that the fan blade of described circulating fan is arranged on circulated air; The outlet of described malleation chamber is connected with the air-supply mouth of pipe, and the import of vacuum chamber is connected with the return air mouth of pipe, is provided with heater in the vacuum chamber and mends the wind heat sink; When the heating cooling, because the effect of heater, hot blast is blown in the melt pit body from the outlet of malleation chamber by ajutage, circulation half cycle after entered in the vacuum chamber by backwind tube heats, under the effect of circulating fan fan blade, move in circles, because thermal source is not directly adjacent to foundry goods, avoided foundry goods local surfaces overtemperature, reduce to a certain degree when temperature, in the time of need cooling, heater cuts out, circulating fan can be sent into natural wind in the thermal insulation pit by mending the wind heat sink, air in the melt pit is discharged by a plurality of air vents of offering on the removable cover, and whole temperature-fall period is easy and simple to handle, has guaranteed the uniformity of cooling rate and temperature; Heater is set to electrical heating elements or/and the combustion chamber promptly possesses two jacket heating systems simultaneously, can feed two kinds of energy of natural gas and fuel oil in the combustion chamber, and accommodation is wider; Refractory insulating layer on the melt pit body sidewall is set to the refractory fibre heat-insulation layer, and the heat absorption of hole wall and conductive heat loss are reduced more than 50%, has saved energy consumption greatly; The air outlet place that offers on described melt pit body sidewall is provided with wind deflector, can control hot blast and blow into melt pit from both sides, makes hot air circulation more smooth and easy.(the melt pit effective dimensions is at 7500 * 9000 * 4500mm for thermal insulation pit of the present invention
3) in use, heating-up temperature 0--650 ℃ adjustable, programming rate 50--100 ℃/h is adjustable, and cooling rate 10--50 ℃/h is adjustable, and temperature homogeneity is ± 20 ℃ in the hole, and shake out time can shorten 30 days, has shortened the production cycle of product greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is that the A-A of Fig. 1 is to cutaway view.
The specific embodiment
As shown in Figure 1, 2, 3, casting parts thermal insulation pit of the present invention, comprise the melt pit body 2 that has split type removable cover 1 by concrete masonry units, be equipped with the carrying thermal insulation layer of being constructed by thermal-insulation floor tile layer 20 and sandy soil layer 21 on the diapire of described melt pit body 2, sidewall is provided with refractory fibre heat-insulation layer 3; On described removable cover 1, offer a plurality of air vents 4 that have capping, on the sidewall of described melt pit body 2, offer give, return air inlet 5,6, describedly give, return air inlet 5,6 by give, backwind tube 7,8 is connected with circulating air device 9, described circulating air device 9 is formed by vacuum chamber 10, circulation air compartment 11 and 12 connections of malleation chamber, and the fan blade 14 of described circulating fan 13 is arranged in the circulation air compartment 11; The outlet 15 of described malleation chamber 12 is connected for 7 mouthfuls with ajutage, and the import 16 of vacuum chamber 10 is connected for 8 mouthfuls with backwind tube, is provided with the two cover heaters of forming in electrical heating elements 17 and combustion chamber 18 in the vacuum chamber 10 and mends the wind heat sink; For guaranteeing the mobile smooth and easy of circulating air, air outlet 5 places that offer on described melt pit body 2 sidewalls are provided with wind deflector 19.
Claims (4)
1. a casting parts thermal insulation pit comprises the melt pit body (2) by concrete masonry units that has removable cover (1), is equipped with the carrying thermal insulation layer on the diapire of described melt pit body (2), and sidewall is provided with refractory insulating layer (3); On described removable cover (1), offer a plurality of air vents (4) that have capping, it is characterized in that: on the sidewall of described melt pit body (2), offer give, return air inlet (5,6), describedly give, return air inlet (5,6) by give, backwind tube (7,8) is connected with circulating air device (9); Described circulating air device (9) is formed by vacuum chamber (10), circulation air compartment (11) and malleation chamber (12) connection, and the fan blade (14) of circulating fan (13) is arranged in the circulation air compartment (11); The outlet (15) of described malleation chamber (12) is connected with ajutage (7) mouth, and the import (16) of vacuum chamber (10) is connected with backwind tube (8) mouth, is provided with heater in the vacuum chamber (10) and mends the wind heat sink.
2. casting parts thermal insulation pit according to claim 1 is characterized in that: described heater is that electrical heating elements (17) is or/and combustion chamber (18).
3. casting parts thermal insulation pit according to claim 1 is characterized in that: the refractory insulating layer on the described sidewall (3) is the refractory fibre heat-insulation layer.
4. casting parts thermal insulation pit according to claim 1 is characterized in that: the air outlet of offering on described melt pit body (2) sidewall (5) locates to be provided with wind deflector (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100493751A CN101239383B (en) | 2008-03-19 | 2008-03-19 | Casting parts thermal insulation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100493751A CN101239383B (en) | 2008-03-19 | 2008-03-19 | Casting parts thermal insulation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101239383A CN101239383A (en) | 2008-08-13 |
| CN101239383B true CN101239383B (en) | 2011-06-01 |
Family
ID=39931368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100493751A Expired - Fee Related CN101239383B (en) | 2008-03-19 | 2008-03-19 | Casting parts thermal insulation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101239383B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695750B (en) * | 2009-10-15 | 2012-12-12 | 无锡蠡湖叶轮制造有限公司 | Sunken type hydraulic station structure |
| CN102294371B (en) * | 2011-05-25 | 2013-11-13 | 中色科技股份有限公司 | Ventilating and cooling device and cooling method of hot-rolled coil yard machine |
| CN102632206B (en) * | 2012-04-23 | 2014-01-15 | 江苏派尔钢铁节能技术有限公司 | Novel environment-friendly and safe heating device for burial pits and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609031A (en) * | 1983-07-04 | 1986-09-02 | M.C.L. Co., Ltd. | System for sintering molds and for preparing cast products |
| CN2528561Y (en) * | 2002-01-26 | 2003-01-01 | 涟源钢铁集团有限公司 | Billet pit thermal insulation device |
| CN201157896Y (en) * | 2008-03-19 | 2008-12-03 | 机械工业第六设计研究院 | Casting parts thermal insulation pit |
-
2008
- 2008-03-19 CN CN2008100493751A patent/CN101239383B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609031A (en) * | 1983-07-04 | 1986-09-02 | M.C.L. Co., Ltd. | System for sintering molds and for preparing cast products |
| CN2528561Y (en) * | 2002-01-26 | 2003-01-01 | 涟源钢铁集团有限公司 | Billet pit thermal insulation device |
| CN201157896Y (en) * | 2008-03-19 | 2008-12-03 | 机械工业第六设计研究院 | Casting parts thermal insulation pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101239383A (en) | 2008-08-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NO.6 INSTITUTE OF PROJECT PLANNING + RESEARCH OF M Free format text: FORMER NAME: NO. 6 INSTITUTE OF PROJECT PLANNING + RESEARCH OF MACHINERY INDUSTRY |
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| CP03 | Change of name, title or address |
Address after: 450007 west section of Zhongyuan Road, Zhongyuan District, Henan, Zhengzhou Patentee after: SIPPR ENGINEERING GROUP Co.,Ltd. Address before: 450007 No. 191 Zhongyuan West Road, Zhengzhou, Henan Patentee before: The Sixth Design and Research Institute Ministry of Machinery Industry |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |