CN106077500A - A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation - Google Patents
A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation Download PDFInfo
- Publication number
- CN106077500A CN106077500A CN201610400647.2A CN201610400647A CN106077500A CN 106077500 A CN106077500 A CN 106077500A CN 201610400647 A CN201610400647 A CN 201610400647A CN 106077500 A CN106077500 A CN 106077500A
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- China
- Prior art keywords
- heater
- high temperature
- temperature alloy
- shell
- precision casting
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Abstract
A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation, including the body of heater can being placed directly in Casting Equipment, body of heater is provided with bell；Being provided with the inner chamber for placing shell in body of heater, bell is provided with the tapping hole for casting in shell.Its preparation method is, designs body of heater size, carries out blanking, case weld shaping, and reserved wire connects hole and thermocouple inserts hole；Placing ceramic fiber in housing；Arrangement heating wire in body of heater；Preformed hole is placed thermocouple；Heating wire, thermocouple are connected with temperature controller able to programme.The method using this heating furnace foundry goods is to be put in shell in the inner chamber of body of heater, and body of heater is placed in Casting Equipment, after preheating shell, is cast in shell melting liquid by tapping hole, insulation, takes out body of heater, takes out foundry goods.Body of heater of the present invention can be placed directly in Casting Equipment, is not affected by environment temperature difference, carrying operating time and the casting factor such as time, shell temperature controllable precise when making casting fill type.
Description
Technical field
The present invention relates to a kind of temperature control heating furnace, specifically one for the preheating of high temperature alloy precision casting shell and
The heating furnace of insulation.
Background technology
High temperature alloy precision casting is widely used in the core heat end of aero-engine, ground gas turbine and nuclear industry
Part, on security, the reliability of aero-engine and ground gas turbine and there is vital impact service life.At height
During temperature alloy precision casting process, owing to cast temperature is high, in order to increase stream in cavity filling process for the high temperature alloy liquation
Dynamic property, thus reduce the generation of the casting flaws such as cold shut, misrun, face crack, need to preheat shell, for difference
The high temperature alloy precision casting parts of specifications and models, shell preheating temperature is all an important technological parameter, closes high temperature
The qualification rate of gold precision casting has directly impact, and rational shell preheating temperature can be by casting process simulation experiment in advance
Obtain with long-term research and production experience accumulation.
At present, during the actual research and production relating to high temperature alloy precision casting, before casting, shell is mostly in casting
The heating furnace of coordinative composition of equipments preheats, then the shell after preheating is carried in Casting Equipment cast, in carrying
And in preparation casting cycle, by Various Seasonal environment temperature difference, carrying the operating time and casting prepare (equipment is taken out very
Sky, high temperature alloy melting etc.) impact of the factor such as time, can shell actual temperature has reduction in various degree, ensure casting
Shell temperature when filling type accurately reaches theoretical preset value, has directly impact to the qualification rate of high temperature alloy precision casting.
Content of the invention
The present invention seeks to the deficiency for solving above-mentioned technical problem, provide one to be used for high temperature alloy precision casting shell
Preheating and insulation heating furnace, body of heater can be placed directly in Casting Equipment, not by environment temperature difference, carrying the operating time and
The impact of the casting factors such as time, shell temperature controllable precise when making casting fill type.
The present invention solves that above-mentioned technical problem be the technical scheme is that
A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation, including can be placed directly in Casting Equipment
Body of heater, body of heater is provided with bell；Being provided with the inner chamber for placing high temperature alloy precision casting shell in body of heater, bell is provided with
Tapping hole for casting in high temperature alloy precision casting shell.
As the preferred version of the present invention, described body of heater outer layer is Stainless Steel Shell, and intermediate layer is double-layer ceramic fiberboard
Heat-insulation layer, internal layer is the zone of heating of multiple heater strip composition；Gap in described heat-insulation layer uses ceramic fiber cotton to fill.
As the preferred version of the present invention, described heater strip is ferrum-chromium-aluminum manganese alloy.
It as the preferred version of the present invention, in described tapping hole, is provided with dust cap.
As the preferred version of the present invention, described body of heater is provided with temperature-controlling system.
As the preferred version of the present invention, described temperature-controlling system, including platinum rhodium thermocouple and temperature controller able to programme, able to programme
Temperature controller is connected with solid-state relay, and solid-state relay controls heating power.
As the preferred version of the present invention, a kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation
Preparation method, comprises the following steps:
Step one, the dimensional requirement preheating shell according to needed for high temperature alloy precision casting, the body of heater size of design heating furnace, stove
Body uses stainless steel, carries out blanking according to the body of heater size of design and carries out case weld shaping, and reserved wire connects hole
And thermocouple inserts hole；
Step 2, putting into double-layer ceramic fiberboard in the housing prepared by step one, ceramic fiber cotton is filled in gap；
Step 3, ferrum-chromium-aluminum manganese alloy heater strip of arranging in body of heater, and be connected with external power supply binding post；
Step 4, insert in the hole insertion platinum rhodium thermocouple in the thermocouple of the housing prepared by step one；
Step 5, heating wire, platinum rhodium thermocouple and temperature controller able to programme are connected, and debug；
Step 6, according to the different needs to heating rate for the foundry goods, work out the heating curves of temperature controller able to programme, i.e. prepare use
Heating furnace in the preheating of high temperature alloy precision casting shell and insulation.
The described heating furnace for the preheating of high temperature alloy precision casting shell and insulation is used to manufacture the accurate casting of high temperature alloy
The method of part, comprises the following steps: is put in being used for high temperature alloy precision casting shell in the inner chamber of body of heater, adds bell, removes
After dust cap；It is placed in the body of heater put into for high temperature alloy precision casting shell in Casting Equipment, according to different foundry goods to liter
The needs of temperature speed preheat to for high temperature alloy precision casting shell, after preheating terminates, by the melting earthenware of Casting Equipment
Melting liquid in crucible is cast in the high temperature alloy precision casting shell being placed in inner chamber by tapping hole, and casting terminates rear stove
Body continues to be incubated high temperature alloy precision casting shell, and insulation takes out body of heater after terminating, and opens bell, takes out high temperature alloy
Precision casting.
Provide the benefit that:
1st, the present invention carries out preheating and heat-insulating heating furnace for high temperature alloy precision casting shell, and body of heater can be placed directly in casting
In equipment, do not affected by environment temperature difference, carrying operating time and the casting factor such as time, when making casting fill type
Shell temperature controllable precise.The present invention for high temperature alloy precision casting during being applied to actual research and production, Neng Goubao
Shell temperature when type is filled in card casting accurately reaches theoretical preset value, can effectively reduce high temperature alloy precision casting cold shut, water not
The generation of the casting flaws such as foot, face crack, thus improve the qualification rate of high temperature alloy precision casting, and reduce production cost.
The present invention is that the yield rate of the core heat end pieces used such as aero-engine, ground gas turbine and nuclear industry improves, produces into
This reduction, provides a kind of effective equipment and technological approaches.
2nd, body of heater of the present invention uses stainless steel, and heat-insulation material uses double-layer ceramic fiberboard, and pottery is filled in gap
Porcelain cellucotton, high insulating effect, heat loss are little；Heater strip uses high-temperature alloy heating wire, heats up rapidly, holding temperature when long
900 ~ 1300 DEG C, ultimate-use (limiting service) temperature 1400 DEG C；Temperature control system uses platinum rhodium thermocouple and temperature controller able to programme, and heating curves is compiled
Journey is controlled, uses solid-state relay control heating power, and contactless service life is long, temperature rise precise control.
Brief description
Fig. 1 is the structural representation for the preheating of high temperature alloy precision casting shell and the heating furnace of insulation for the present invention；
Fig. 2 is that the present invention uses status architecture schematic diagram for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation；
In figure, mark is: the 1st, body of heater, the 2nd, bell, the 3rd, inner chamber, the 4th, tapping hole, the 5th, dust cap, the 6th, temperature controller, the 7th, housing, the 8th, is incubated
Layer, the 9th, zone of heating, the 10th, platinum rhodium thermocouple, the 11st, Casting Equipment, the 12nd, melting kettle.
Detailed description of the invention
As it can be seen, a kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation, including can directly put
The body of heater 1 being placed in Casting Equipment, body of heater 1 is provided with bell 2；It is provided with for placing high temperature alloy precision casting type in body of heater 1
The inner chamber 3 of shell, bell 2 is provided with the tapping hole 4 for casting in high temperature alloy precision casting shell.
Including body of heater, body of heater 1 is provided with bell 2；Described body of heater 1 can directly be placed in Casting Equipment；It is provided with in body of heater 1
Can put the inner chamber 3 of high temperature alloy precision casting shell, bell 2 is provided with the tapping hole 4 for casting.
As the preferred version of the present invention, described body of heater 1 outer layer is Stainless Steel Shell 7, and intermediate layer is double-layer ceramic fiber
Plate heat-insulation layer 8, internal layer is the zone of heating 9 of multiple heater strip composition；Gap in described heat-insulation layer 8 uses ceramic fiber cotton to fill out
Fill.
As the preferred version of the present invention, described heater strip is ferrum-chromium-aluminum manganese alloy.
It as the preferred version of the present invention, in described tapping hole 4, is provided with dust cap 5.
As the preferred version of the present invention, described body of heater 1 is provided with temperature-controlling system 6.
As the preferred version of the present invention, described temperature-controlling system, including platinum rhodium thermocouple 10 and temperature controller able to programme 6, can
Programming temperature controller is connected with solid-state relay, and solid-state relay controls heating power.
As the preferred version of the present invention, a kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation
Preparation method, comprises the following steps:
Step one, the dimensional requirement preheating shell according to needed for high temperature alloy precision casting, design accurate temperature controlling heating furnace is implemented
The body of heater apparent size of example, body of heater uses stainless steel, carries out blanking according to Proper Design size and carry out case weld one-tenth
Type, and reserved wire connects hole and thermocouple inserts hole；
Step 2, placing double-layer ceramic fiberboard in the housing prepared by step one as heat-insulation material, gap is filled
Ceramic fiber cotton；
Step 3, ferrum-chromium-aluminum manganese alloy high-temperature alloy heating wire of arranging in body of heater, and be connected with external power supply binding post；
Step 4, in the preformed hole of the housing prepared by step one place platinum rhodium thermocouple；
Step 5, heating wire binding post and thermocouple are connected with temperature controller able to programme, and carry out UNICOM's debugging；
Step 6, according to the different needs to heating rate for the foundry goods model, work out heating curves, i.e. prepare a kind of for high temperature
Alloy precision casting shell preheating and the heating furnace of insulation.
The described heating furnace for the preheating of high temperature alloy precision casting shell and insulation is used to manufacture the accurate casting of high temperature alloy
The method of part, comprises the following steps: is put in being used for high temperature alloy precision casting shell in the inner chamber 3 of body of heater 1, adds bell 2, remove
After removing dust cap 5；The body of heater put into for high temperature alloy precision casting shell is placed in Casting Equipment 11, according to different foundry goods
The needs of heating rate are preheated to for high temperature alloy precision casting shell, after preheating terminates, by Casting Equipment 11
Melting liquid in melting kettle 12 is cast in the high temperature alloy precision casting shell being placed in inner chamber 3 by tapping hole 4, waters
Casting terminates rear furnace body and continues to be incubated high temperature alloy precision casting shell, and insulation takes out body of heater 1 after terminating, and opens bell 2,
Take out high temperature alloy precision casting.
Embodiment
The present embodiment body of heater uses stainless steel, and heat-insulation material uses double-layer ceramic fiberboard, and pottery is filled in gap
Porcelain cellucotton, can realize high-efficiency insulated under less heat loss, and heat resisting temperature is 1400 DEG C, temperature outside body of heater during normal work
Degree is less than 100 DEG C.Body of heater apparent size is 300 ~ 2000mm*300 ~ 2000mm*300 ~ 2000mm(L*W*H), body of heater inner chamber chi
Very little is 100 ~ 1800mm*100 ~ 1800*100 ~ 1800mm(L*W*H).
Heating furnace precise temperature control system of the present invention uses platinum rhodium thermocouple and temperature controller able to programme, and heating curves programming can
Control, can according to different foundry goods models to heating rate need work out heating curves, use solid-state relay control heating wire
Heating power, contactless, service life is long, actual temperature measurement and temperature rise precise control in heating furnace chamber body.
Heater strip used by heating furnace of the present invention is the fire resistant iron chromium alumal heating wire that model is 0Cr27Al7Mo2,
Embodiment specification is φ 3mm, heats up rapidly, holding temperature 900 ~ 1300 DEG C when long, ultimate-use (limiting service) temperature 1400 DEG C.
A kind of preparation method for the preheating of high temperature alloy precision casting shell and the heating furnace of insulation, including following step
Rapid:
Step 1: according to the dimensional requirement preheating shell needed for certain model high temperature alloy precision casting, design accurate temperature controlling of the present invention and add
The body of heater apparent size of hot stove embodiment is 400mm*400mm*500mm(L*W*H), body of heater uses stainless steel, according to stove
Body design size carries out blanking and carries out case weld shaping, and reserved wire connects hole and thermocouple inserts hole.
Step 2: place double-layer ceramic fiberboard in the housing prepared by step 1 and fill out as heat-insulation material, gap
Fill ceramic fiber cotton.
Step 3: ferrum-chromium-aluminum manganese alloy (0Cr27Al7Mo2) high-temperature alloy heating wire of arranging in body of heater, specification is φ
3mm, and be connected with external power supply binding post.
Step 4: place platinum rhodium thermocouple in the preformed hole of the housing prepared by step 1.
Step 5: heating wire binding post and thermocouple are connected with temperature controller able to programme, and carry out UNICOM's debugging.
Step 6: according to the different needs to heating rate for the foundry goods model, work out heating curves, then shell is carried out pre-
Heat and insulation.
The present embodiment use the described heating furnace for the preheating of high temperature alloy precision casting shell and insulation manufacture certain type
The method of number high temperature alloy precision casting, comprises the following steps: preheating shell needed for high temperature alloy precision casting is put in body of heater 1
Inner chamber 3 in, add bell 2, after removing dust cap 5；To put into for preheating shell needed for certain model high temperature alloy precision casting
Body of heater be placed in Casting Equipment 11, according to different foundry goods to the needs of heating rate to for high temperature alloy precision casting shell
Preheating, meanwhile, the melting kettle 12 of Casting Equipment 11 carries out melting to high temperature alloy and obtains melting liquid；Certain model high temperature closes
After gold precision casting shell preheating terminates, the high temperature alloy being cast to be placed in inner chamber 3 by tapping hole 4 by melting liquid is accurate
In casting shell, casting terminates rear furnace body and continues to be incubated certain model high temperature alloy precision casting shell, after insulation terminates
Take out body of heater 1, open bell 2, take out certain model high temperature alloy precision casting.
Claims (8)
1. the heating furnace for the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: include directly putting
The body of heater being placed in Casting Equipment, body of heater is provided with bell；It is provided with in body of heater for placing high temperature alloy precision casting shell
Inner chamber, bell is provided with the tapping hole for casting in high temperature alloy precision casting shell.
2. as claimed in claim 1 for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: institute
Stating body of heater outer layer is Stainless Steel Shell, and intermediate layer is double-layer ceramic fiberboard heat-insulation layer, and internal layer is adding of multiple heater strip composition
Thermosphere；Gap in described heat-insulation layer uses ceramic fiber cotton to fill.
3. as claimed in claim 2 for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: institute
Stating heater strip is ferrum-chromium-aluminum manganese alloy heater strip.
4. as claimed in claim 3 for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: institute
It is provided with dust cap in stating tapping hole.
5. as claimed in claim 4 for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: institute
State body of heater and be provided with temperature-controlling system.
6. as claimed in claim 5 for the heating furnace of the preheating of high temperature alloy precision casting shell and insulation, it is characterised in that: institute
Stating temperature-controlling system, including platinum rhodium thermocouple and temperature controller able to programme, temperature controller able to programme is connected with solid-state relay, solid-state relay
Device controls heating power.
7. as claimed in claim 6 for the preparation method of the preheating of high temperature alloy precision casting shell and the heating furnace of insulation, its
It is characterised by: comprise the following steps:
Step one, the dimensional requirement preheating shell according to needed for high temperature alloy precision casting, the body of heater size of design heating furnace, stove
Body uses stainless steel, carries out blanking according to the body of heater size of design and carries out case weld shaping, and reserved wire connects hole
And thermocouple inserts hole；
Step 2, putting into double-layer ceramic fiberboard in the housing prepared by step one, ceramic fiber cotton is filled in gap；
Step 3, ferrum-chromium-aluminum manganese alloy heater strip of arranging in body of heater, and be connected with external power supply binding post；
Step 4, insert in the hole insertion platinum rhodium thermocouple in the thermocouple of the housing prepared by step one；
Step 5, heating wire, platinum rhodium thermocouple and temperature controller able to programme are connected, and debug；
Step 6, according to the different needs to heating rate for the foundry goods, work out the heating curves of temperature controller able to programme, i.e. prepare use
Heating furnace in the preheating of high temperature alloy precision casting shell and insulation.
8. use such as claim 1-6 heating furnace for the preheating of high temperature alloy precision casting shell and insulation as described in one of them
Manufacture the method for high temperature alloy precision casting, it is characterised in that: comprise the following steps: high temperature alloy precision casting shell will be used for
It is put in the inner chamber of body of heater, adds bell, after removing dust cap；The body of heater put into for high temperature alloy precision casting shell is placed in
In Casting Equipment, preheat to for high temperature alloy precision casting shell according to the different needs to heating rate for the foundry goods, in advance
After thermojunction bundle, the melting liquid in the melting kettle of Casting Equipment is cast to by tapping hole the high temperature alloy being placed in inner chamber
In precision casting shell, casting terminates rear furnace body and continues to be incubated high temperature alloy precision casting shell, and insulation takes after terminating
Go out body of heater, open bell, take out high temperature alloy precision casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400647.2A CN106077500A (en) | 2016-06-08 | 2016-06-08 | A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400647.2A CN106077500A (en) | 2016-06-08 | 2016-06-08 | A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation |
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| CN106077500A true CN106077500A (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610400647.2A Pending CN106077500A (en) | 2016-06-08 | 2016-06-08 | A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598094A (en) * | 2017-09-01 | 2018-01-19 | 西峡县众德汽车部件有限公司 | Produce heat resisting steel turbocharger housing new method |
| CN107831189A (en) * | 2017-09-19 | 2018-03-23 | 中铝材料应用研究院有限公司 | A kind of multi-functional quenching detection apparatus |
| CN113198977A (en) * | 2021-05-20 | 2021-08-03 | 西安聚能高温合金材料科技有限公司 | Device and process for preheating master alloy tool |
| CN114700466A (en) * | 2022-04-18 | 2022-07-05 | 北京钢研高纳科技股份有限公司 | Synchronous heating casting method of alloy casting and alloy casting |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |