CN109648046A - Pump seat shell mold dewaxing roasting technique - Google Patents
Pump seat shell mold dewaxing roasting technique Download PDFInfo
- Publication number
- CN109648046A CN109648046A CN201910117938.4A CN201910117938A CN109648046A CN 109648046 A CN109648046 A CN 109648046A CN 201910117938 A CN201910117938 A CN 201910117938A CN 109648046 A CN109648046 A CN 109648046A
- Authority
- CN
- China
- Prior art keywords
- seat shell
- shell mold
- pump seat
- roasting
- time
- 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
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to a kind of pump seat shell mold dewaxing roasting techniques, comprising the following steps: (1) once burns shell: pump seat shell mold is put into progress first time roasting in roaster；(2) it washes shell mold: after pump seat shell mold is cooling, pump seat shell mold being washed；(3) secondary burning shell: pump seat shell mold is put into roaster and continues second of roasting.The present invention not only simple process, easy to operate, but also remaining wax liquor in the pump seat shell mold after hydrodewaxing step can be removed, sand hole is reduced, Product Precision is improved, has broad application prospects.
Description
Technical field
The present invention relates to a kind of pump seat shell mold dewaxing roasting techniques.
Background technique
Hot investment casting refers to the general name for obtaining accurate-size casting process.It is accurate relative to traditional sand casting process
The casting dimension that casting obtains is more accurate, and surface smoothness is more preferable.It includes: model casting, ceramic mold casting, metal casting
It makes, compression casting, lost foam casting.Wherein more the most commonly used is model castings, also referred to as lost-wax casting: selecting suitable wax-pattern material
Material, such as paraffin manufacture fusible pattern；It repeats to be stained with fireproof coating on fusible pattern and spreads fire sand process, harden shell and drying；Again will
Internal fusible pattern melts away, acquisition type chamber；Roasting shell is to obtain enough intensity, and the expendable pattern material that burn-up is remaining；Casting
Required metal material；Solidification cooling, sand removal after shelling, to obtain high-precision finished product；It is needed or is carried out according to product
Heat treatment and cold working and surface treatment.Wherein internal fusible pattern is melted away again, acquisition type chamber, referred to as dewaxing technique are existing
Dewaxing technique in be easy to leave wax liquor in shell mold, cause sand hole more, casting accuracy decline, have great limitation
Property.
Summary of the invention
In view of the deficiencies in the prior art, technical problem to be solved by the invention is to provide a kind of dewaxings of pump seat shell mold to roast
Technique, it is not only reasonable in design but also efficiently convenient.
In order to solve the above-mentioned technical problem, the roasting technique the technical scheme is that a kind of pump seat shell mold dewaxes, including
Following steps:
(1) it once burns shell: pump seat shell mold is put into progress first time roasting in roaster；
(2) it washes shell mold: after pump seat shell mold is cooling, pump seat shell mold being washed；
(3) secondary burning shell: pump seat shell mold is put into roaster and continues second of roasting.
Further, in step (1), the temperature of roasting is 800 DEG C ~ 900 DEG C for the first time, for the first time when the heat preservation of roasting
Between be 20 min ~ 30min.
Further, in step (2), after pump seat shell mold is cooled to room temperature, first time cleaning is carried out to pump seat shell mold,
For the first time clean when, first poured into pump seat shell mold to the water of pump seat shell mold height 1/2 ~ 3/4, rotate clockwise pump seat shell mold 1 ~
After 3 times, by the rim of a cup of the sprue cup in pump seat shell mold, the water in the seat shell of falling dry pump mould, cleaning continue to pump seat downward perpendicular to the ground
Shell mold carries out second and cleans；Second when cleaning, then the water of entire pump seat shell mold is filled in pump seat shell mold, rotates clockwise
After pump seat shell mold 1 ~ 3 time, the water in the seat shell of falling dry pump mould downward perpendicular to the ground by the rim of a cup of the sprue cup in pump seat shell mold.
Further, it in step (2), is carried out after being cooled to room temperature from pump seat shell mold in roaster furnace clear for the first time
It washes, or carries out first time cleaning after being cooled to room temperature from pump seat shell mold outside roaster furnace.
Further, in step (3), the temperature of second of roasting is 1060 DEG C ~ 1140 DEG C, the heat preservation of second of roasting
Time is 80min ~ 120min.
Compared with prior art, the invention has the following advantages: the present invention not only simple process, easy to operate, and
And remaining wax liquor in the pump seat shell mold after hydrodewaxing step can be removed, sand hole is reduced, Product Precision is improved, is had wide
Application prospect.
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the process flow diagram of the embodiment of the present invention.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
Carefully it is described as follows.
The roasting technique as shown in Figure 1, a kind of pump seat shell mold dewaxes, comprising the following steps:
(1) it once burns shell: pump seat shell mold is put into progress first time roasting in roaster；
(2) it washes shell mold: after pump seat shell mold is cooling, pump seat shell mold being washed；
(3) secondary burning shell: pump seat shell mold is put into roaster and continues second of roasting.
In embodiments of the present invention, in step (1), the temperature of roasting is 800 DEG C ~ 900 DEG C for the first time, is roasted for the first time
Soaking time be 20 min ~ 30min.
In embodiments of the present invention, in step (2), after pump seat shell mold is cooled to room temperature, the is carried out to pump seat shell mold
Primary cleaning when cleaning for the first time, is first poured into the water of pump seat shell mold height 1/2 ~ 3/4 in pump seat shell mold, is rotated clockwise
After pump seat shell mold 1 ~ 3 time, the water in the seat shell of falling dry pump mould downward perpendicular to the ground by the rim of a cup of the sprue cup in pump seat shell mold, cleaning
Continue to carry out pump seat shell mold second of cleaning；Second when cleaning, then the water of entire pump seat shell mold is filled in pump seat shell mold,
After rotating clockwise pump seat shell mold 1 ~ 3 time, the seat shell of the falling dry pump mould downward perpendicular to the ground by the rim of a cup of the sprue cup in pump seat shell mold
Interior water；To wash out the wax liquor remained in pump seat shell mold in dewaxing technique；Preferably, the temperature of the water of cleaning be with
Room temperature is close.
In embodiments of the present invention, in step (2), is carried out after being cooled to room temperature from pump seat shell mold in roaster furnace
Primary cleaning, or first time cleaning is carried out after being cooled to room temperature from pump seat shell mold outside roaster furnace.
In embodiments of the present invention, in step (3), the temperature of second of roasting is 1060 DEG C ~ 1140 DEG C, second of roasting
The soaking time of burning is 80min ~ 120min.
In the embodiment of the present invention, before step (1), dewaxing technique is carried out, by the rim of a cup court of the sprue cup of pump seat shell mold
The lower dewaxing kettle for being sent into the Kg/cm2 pressure of 7 Kg/cm2 ~ 7.5, passes through the dewaxing of 14 ~ 20 min in dewaxing kettle, and dewax front pump
Seat shell mould keeps constant temperature, and dewaxing kettle rapid pressure reaches 5.5 Kg/cm2 of pressure ~ 6.5Kg/cm2 before 14S, is slowly depressured, decompression
Time is greater than 1.5min；Pump seat shell mold after completion dewaxing technique is vertically placed in roaster, step (1) ~ step is carried out
(3) operation.
In the embodiment of the present invention, completes step (1) ~ step (3) and carry out pouring technology afterwards.
For indicating that the term of positional relationship or shape removes applied in any technical solution disclosed in aforementioned present invention
Its otherwise indicated outer meaning includes approximate with its, similar or close state or shape.
Either component provided by the invention by multiple individual component parts either assembled, or one
The separate part that forming technology manufactures.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；Although referring to preferred embodiment pair
The present invention is described in detail, it should be understood by those ordinary skilled in the art that: still can be to of the invention specific
Embodiment is modified or some technical features can be equivalently replaced；Without departing from the spirit of the technical scheme of the invention,
It should all cover within the scope of the technical scheme claimed by the invention.
Claims (5)
- The roasting technique 1. a kind of pump seat shell mold dewaxes, which comprises the following steps:(1) it once burns shell: pump seat shell mold is put into progress first time roasting in roaster；(2) it washes shell mold: after pump seat shell mold is cooling, pump seat shell mold being washed；(3) secondary burning shell: pump seat shell mold is put into roaster and continues second of roasting.
- The roasting technique 2. pump seat shell mold according to claim 1 dewaxes, it is characterised in that: in step (1), roast for the first time The temperature of burning is 800 DEG C ~ 900 DEG C, and the soaking time of roasting is 20 min ~ 30min for the first time.
- The roasting technique 3. pump seat shell mold according to claim 1 dewaxes, it is characterised in that: in step (2), when pump seat shell After mould is cooled to room temperature, first time cleaning is carried out to pump seat shell mold, when cleaning for the first time, is first poured into pump seat shell mold to pump seat The water of shell mold height 1/2 ~ 3/4, it is after rotating clockwise pump seat shell mold 1 ~ 3 time, the rim of a cup of the sprue cup in pump seat shell mold is vertical The ground water in the seat shell of falling dry pump mould down, cleaning continue to carry out second to pump seat shell mold to clean；When second of cleaning, then The water that entire pump seat shell mold is filled in pump seat shell mold, after rotating clockwise pump seat shell mold 1 ~ 3 time, by the sprue cup in pump seat shell mold The rim of a cup water in the seat shell of falling dry pump mould downward perpendicular to the ground.
- The roasting technique 4. pump seat shell mold according to claim 1 dewaxes, it is characterised in that: in step (2), in roaster First time cleaning is carried out after being cooled to room temperature from pump seat shell mold in furnace, or is cooled to room temperature from pump seat shell mold outside roaster furnace First time cleaning is carried out afterwards.
- The roasting technique 5. pump seat shell mold according to claim 1 dewaxes, it is characterised in that: in step (3), second of roasting The temperature of burning is 1060 DEG C ~ 1140 DEG C, and the soaking time of second of roasting is 80min ~ 120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910117938.4A CN109648046A (en) | 2019-02-15 | 2019-02-15 | Pump seat shell mold dewaxing roasting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910117938.4A CN109648046A (en) | 2019-02-15 | 2019-02-15 | Pump seat shell mold dewaxing roasting technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109648046A true CN109648046A (en) | 2019-04-19 |
Family
ID=66122779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910117938.4A Pending CN109648046A (en) | 2019-02-15 | 2019-02-15 | Pump seat shell mold dewaxing roasting technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109648046A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700465A (en) * | 2022-03-02 | 2022-07-05 | 中国电建集团郑州泵业有限公司 | Roasting method for final-stage guide vane investment casting formwork of double-casing pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128229A (en) * | 2011-11-26 | 2013-06-05 | 东风精密铸造有限公司 | Investment casting mold cavity cleaning method based on selected area laser powder sintering rapid proto-typing technology application |
| CN105436409A (en) * | 2015-12-24 | 2016-03-30 | 西北工业大学 | Precision investment casting method for magnesium alloy |
| CN105903901A (en) * | 2016-05-13 | 2016-08-31 | 上海万泽精密铸造有限公司 | Near-zero shrinkage rate molding shell based on fused quartz and preparation method thereof |
| CN106475521A (en) * | 2016-08-01 | 2017-03-08 | 苏州聚复高分子材料有限公司 | A kind of metal casting part preparation method based on 3D printing technique |
| CN109261900A (en) * | 2018-11-26 | 2019-01-25 | 惠州市吉邦精密技术有限公司 | A kind of process for making shell of metal parts precision casting shell |
-
2019
- 2019-02-15 CN CN201910117938.4A patent/CN109648046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128229A (en) * | 2011-11-26 | 2013-06-05 | 东风精密铸造有限公司 | Investment casting mold cavity cleaning method based on selected area laser powder sintering rapid proto-typing technology application |
| CN105436409A (en) * | 2015-12-24 | 2016-03-30 | 西北工业大学 | Precision investment casting method for magnesium alloy |
| CN105903901A (en) * | 2016-05-13 | 2016-08-31 | 上海万泽精密铸造有限公司 | Near-zero shrinkage rate molding shell based on fused quartz and preparation method thereof |
| CN106475521A (en) * | 2016-08-01 | 2017-03-08 | 苏州聚复高分子材料有限公司 | A kind of metal casting part preparation method based on 3D printing technique |
| CN109261900A (en) * | 2018-11-26 | 2019-01-25 | 惠州市吉邦精密技术有限公司 | A kind of process for making shell of metal parts precision casting shell |
Non-Patent Citations (1)
| Title |
|---|
| 魏超: "《液体火箭发动机特种制造技术》", 31 October 2014, 中国宇航出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700465A (en) * | 2022-03-02 | 2022-07-05 | 中国电建集团郑州泵业有限公司 | Roasting method for final-stage guide vane investment casting formwork of double-casing pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106111943B (en) | Large-scale impeller low-pressure casting method and cooling control technique and exhaust system | |
| CN110180994B (en) | Preparation method of investment casting shell with long and thin blind holes | |
| CN107150115B (en) | A kind of alloy matrix aluminum engine Cast iron liner composite casting moulding process | |
| CN105728650A (en) | Precision casting method | |
| CN109986025A (en) | Stainless steel water pump vane wheel full form casting process | |
| CN108015231A (en) | A kind of investment precision casting technology | |
| CN104014748B (en) | The method utilizing the overall shell mould of formwork roasting apperance gasification, and combustion preparation | |
| CN106944592A (en) | Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting | |
| CN109202019A (en) | A kind of moulding process casting double shrouded wheel | |
| CN105344962A (en) | Manufacturing method and device for thin-wall rotary type part | |
| CN110340279A (en) | Heavy castings casting method | |
| CN111097875B (en) | Casting process of inner chill for accelerated solidification and cooling of thick and large investment castings | |
| CN109648046A (en) | Pump seat shell mold dewaxing roasting technique | |
| CN111761027B (en) | Process method for manufacturing titanium and titanium alloy precision castings through photosensitive resin mold | |
| CN207205182U (en) | Electric heating integrated steam dewaxing kettle | |
| CN110640085A (en) | Investment casting process for hollow casting | |
| CN202207774U (en) | Investment shell for casting castings with slender holes | |
| RU2231414C2 (en) | Method for producing large-size castings having complex-shape inner cavities with use of investment patterns | |
| CN105855467B (en) | A kind of hot investment casting wax tube filler inner mold and wax core production method | |
| CN109986029A (en) | Pump body full form casting process | |
| CN107398531A (en) | The casting technique of high-precision stainless steel body | |
| CN110976770A (en) | Method for eliminating shrinkage cavity in precision casting based on chilling block | |
| CN104889323A (en) | Ceramic sprue cup protective cover | |
| CN103028715B (en) | Centrifugal casting method of double suction type impeller | |
| CN104923735A (en) | Rapid investment casting technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |
|
| RJ01 | Rejection of invention patent application after publication |