CN104325079A - Method for solving undercasting of precise casting - Google Patents
Method for solving undercasting of precise casting Download PDFInfo
- Publication number
- CN104325079A CN104325079A CN201410604157.5A CN201410604157A CN104325079A CN 104325079 A CN104325079 A CN 104325079A CN 201410604157 A CN201410604157 A CN 201410604157A CN 104325079 A CN104325079 A CN 104325079A
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- China
- Prior art keywords
- casting
- wax
- exhaust
- pattern
- formwork
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- 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
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a method for solving undercasting of a precise casting. The method comprises the steps of pressing a casting wax mould and pressing an exhaust wax mould rod with a diameter of 1-2mm, cutting the exhaust wax mould rod into exhaust wax mould segments with lengths of 8-15mm, welding the exhaust wax mould segments on corresponding positions of the casting wax mould aiming at positions prone to generate defects on the casting, and trimming the same; the method disclosed by the invention is generally used in the case of unobvious effect of the precision casting process and can be used for effectively solving the undercasting defect caused by the casting structure problem and reducing and even eliminating the conditions of incomplete casting and incomplete corners. The method disclosed by the invention is simple and easy to operate, little in necessary manpower and material cost, low in cost and high in efficiency.
Description
Technical field
The invention belongs to precision-investment casting field, be specifically related to a kind of method solving precision casting and owe to cast.
Background technology
Solution foundry goods is owed casting class defect and is usually adopted following process: improve pouring temperature, raising mold temperature, raising poring rate, improve shell gas permeability, increase running channel cross-sectional area etc., but for structure special such as thin wall foundry goods, sometimes and not obvious, often there is the incomplete and imperfect situation of corner angle of foundry goods in above process effect.
Summary of the invention
The object of the invention is to solve the problem, a kind of method solving precision casting and owe to cast is provided, the method can solve in fusing casting process because exhaust does not freely cause the imperfect class of foundry goods corner angle to owe to cast the method for defect, it has the advantages such as simple, with low cost, and effectively can solve thin-section casting and owe to cast the incomplete defect of the corner angle caused.
To achieve these goals, the technical solution adopted in the present invention comprises the following steps:
1) the outer mounting edge casting wax mould of erection support, support or support plate is suppressed;
2) the exhaust wax-pattern rod that diameter is 1 ~ 2mm is suppressed;
3) exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 8mm to 15mm;
4) easily produce the position of defect for foundry goods, the welding of casting wax mould relevant position is vented excellent wax-pattern section and smoothing cunning;
5) butt welding connects the casting wax mould being vented excellent wax-pattern section and carries out combination module, oil removing, shell processed, dewaxing and preroast process successively;
6) to the formwork after preroast process, be stained with the end formwork being vented excellent wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) roasting, fusing cast, shelling and the process of cutting polishing mark are carried out to ready formwork.
Described step 1) in, erection support is tile, and thickness is 1.4 ~ 1.6mm, and thick after surrounding chamfering is 0.8 ~ 1.2mm, and edge is the thinnest.
Described step 1) in, support is cone thin-wall part, and the part thickness that mounting edge is the thinnest is less than 1mm.
Described step 1) in, the outer mounting edge of support plate is wedge shape thin-wall part, and the thickness of the thinnest mounting edge is 2mm.
Described step 7) in, when casting process generation steam vent flash situation, use fire clay gently to smear flash place.
Described step 7) in, remove all exhausts excellent metal during polishing completely, make cast(ing) surface smooth, noresidue vestige.
Compared with prior art, the present invention has following beneficial effect:
Solution precision castings provided by the invention is melting in casting process because exhaust does not freely cause the imperfect class of foundry goods corner angle to owe to cast the method for defect, when conventional precision casting process method DeGrain, effectively can solve the deficient casting defect because casting structure problem causes, reduce and eliminate even foundry goods incompleteness and the imperfect situation appearance of corner angle.This inventive method is simple to operation, required artificial, Master Cost is very few, cost ineffective rate is high.
Accompanying drawing explanation
Fig. 1 is casting wax mould of the present invention and the front view being vented wax-pattern rod installation site;
Fig. 2 is casting wax mould of the present invention and the top view being vented wax-pattern rod installation site.
Wherein, 1 is casting wax mould; 2 is exhaust wax-pattern rod.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation:
See Fig. 1 and Fig. 2, the present invention includes following steps:
1) the outer mounting edge casting wax mould of erection support, support or support plate is suppressed; Erection support is tile, and thickness is 1.4 ~ 1.6mm, and thick after surrounding chamfering is 0.8 ~ 1.2mm, and edge is the thinnest.Support is cone thin-wall part, and the part thickness that mounting edge is the thinnest is less than 1mm.The outer mounting edge of support plate is wedge shape thin-wall part, and the thickness of the thinnest mounting edge is 2mm.
2) the exhaust wax-pattern rod that diameter is 1 ~ 2mm is suppressed;
3) exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 8mm to 15mm;
4) easily produce the position of defect for foundry goods, the welding of casting wax mould relevant position is vented excellent wax-pattern section and smoothing cunning;
5) butt welding connects the casting wax mould being vented excellent wax-pattern section and carries out combination module, oil removing, shell processed, dewaxing and preroast process successively;
6) to the formwork after preroast process, be stained with the end formwork being vented excellent wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) roasting, fusing cast, shelling and the process of cutting polishing mark are carried out to ready formwork.When casting process generation steam vent flash situation, fire clay is used gently to smear flash place.Remove all exhausts excellent metal during polishing completely, make cast(ing) surface smooth, noresidue vestige.
Principle of the present invention
Compacting casting wax mould and compacting diameter are the exhaust wax-pattern rod of 1 ~ 2mm, exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 8mm ~ 15mm, the position of defect is easily produced for foundry goods, the welding of casting wax mould relevant position is vented wax-pattern section wax-pattern section and smoothing cunning, exhaust wax-pattern section wax-pattern segment length and diameter is chosen according to the size of foundry goods, the foundry goods that volume is slightly large can choose length and diameter slightly large exhaust rod, light casting can choose length and diameter slightly little exhaust rod, the length of exhaust rod is greater than the formwork thickness on casting wax mould top layer, the casting wax mould that welding is vented wax-pattern section carries out versatile smart casting process: combination module, oil removing, shell processed, dewaxing, preroast, to the formwork after preroast, the end formwork of exhaust wax-pattern section is stained with grinder buffing, until steam vent exposes, formwork is ready to complete, ready formwork carries out all the other general procedure of hot investment casting: roasting, fusing cast is (when casting process generation steam vent flash situation, available common fire clay is gently smeared this place), shelling, cutting polishing mark etc., the excellent metal of all exhausts is removed completely during polishing, make cast(ing) surface smooth, noresidue vestige.
Enumerate several specific embodiment of the present invention below:
Embodiment 1
1) erection support casting wax mould is suppressed.Erection support is tile, and thickness is about 1.5mm, thick about 1mm after surrounding chamfering, and corner is the thinnest, often owes casting;
2) the exhaust wax-pattern rod that diameter is 1mm is suppressed;
3) exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 10mm;
4) erection support foundry goods easily produces at four wedge angles and owes casting defect, four the wedge angle position welding of erection support wax-pattern are vented wax-pattern section, and smoothing is sliding;
5) erection support wax-pattern welding being vented wax-pattern section carries out versatile smart casting process: combination module, oil removing, shell processed, dewaxing and preroast;
6) to the erection support formwork after preroast, be stained with the end formwork of exhaust wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) ready erection support formwork carries out all the other general procedure of hot investment casting: roasting, fusing cast are (when casting process generation steam vent flash situation, available common fire clay is gently smeared this place), shelling, cutting polishing mark etc., the excellent metal of all exhausts is removed completely during polishing, make erection support cast(ing) surface smooth, without the excellent remaining trace of exhaust.
Embodiment 2
1) suppress bracket casting wax-pattern, support is cone thin-wall part, and mounting edge is the thinnest less than 1mm, often occurs that owing casting causes mounting edge crest line unintelligible;
2) suppressing diameter is that 1.5mm is vented excellent wax-pattern;
3) the excellent wax-pattern of exhaust is cut into the long exhaust wax-pattern section of 12mm;
4) bracket casting easily produces at the thinnest mounting edge and owes casting defect, and in the thinnest mounting edge uniform welding of support wax-pattern 3 exhaust wax-pattern section, and smoothing is sliding;
5) support wax-pattern welding being vented wax-pattern section carries out versatile smart casting process: combination module, oil removing, shell processed, dewaxing, preroast;
6) to the support formwork after preroast, be stained with the end formwork of exhaust wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) ready support formwork carries out all the other general procedure of hot investment casting: roasting, fusing cast are (when casting process generation steam vent flash situation, available general row's fire clay is gently smeared this place), shelling, cutting polishing mark etc., the excellent metal of all exhausts is removed completely during polishing, make bracket casting smooth surface smooth, without the excellent remaining trace of exhaust.
Embodiment 3
1) suppress the outer mounting edge casting wax mould of support plate, the outer mounting edge of support plate is wedge shape thin-wall part, and it is thick that the thinnest mounting edge is about 2mm, easily occurs to owe casting defect;
2) suppressing diameter is that 2mm is vented wax-pattern rod;
3) the excellent wax-pattern of exhaust is cut into the long exhaust wax-pattern section of 15mm;
4) the outer mounting edge foundry goods of support plate easily produces at the thinnest mounting edge and owes casting defect, and in the support plate outer the thinnest mounting edge uniform welding of mounting edge wax-pattern 5 exhaust wax-pattern section, and smoothing is sliding;
5) the outer mounting edge wax-pattern of support plate welding being vented wax-pattern section carries out versatile smart casting process: combination module, oil removing, shell processed, dewaxing, preroast;
6) to the outer mounting edge formwork of the support plate after preroast, be stained with the end formwork of exhaust wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) the outer mounting edge formwork of ready support plate carries out all the other general procedure of hot investment casting: roasting, fusing cast are (when casting process generation steam vent flash situation, available general row's fire clay is gently smeared this place), shelling, cutting polishing mark etc., the excellent metal of all exhausts is removed completely during polishing, make the outer mounting edge cast(ing) surface of support plate smooth, without the excellent remaining trace of exhaust.
Embodiment 4:
1) erection support casting wax mould is suppressed.Erection support is tile, and thickness is about 1.5mm, thick about 1mm after surrounding chamfering, and corner is the thinnest, often owes casting;
2) the exhaust wax-pattern rod that diameter is 1.2mm is suppressed;
3) exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 8mm;
4) erection support foundry goods easily produces at four wedge angles and owes casting defect, four the wedge angle position welding of erection support wax-pattern are vented wax-pattern section, and smoothing is sliding;
5) erection support wax-pattern welding being vented wax-pattern section carries out versatile smart casting process: combination module, oil removing, shell processed, dewaxing and preroast;
6) to the erection support formwork after preroast, be stained with the end formwork of exhaust wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) ready erection support formwork carries out all the other general procedure of hot investment casting: roasting, fusing cast are (when casting process generation steam vent flash situation, available common fire clay is gently smeared this place), shelling, cutting polishing mark etc., the excellent metal of all exhausts is removed completely during polishing, make erection support cast(ing) surface smooth, without the excellent remaining trace of exhaust.
Above content is only and technological thought of the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change that technical scheme basis is done, within the protection domain all falling into claims of the present invention.
Claims (6)
1. solve the method that precision casting is owed to cast, it is characterized in that, comprise the following steps:
1) the outer mounting edge casting wax mould of erection support, support or support plate is suppressed;
2) the exhaust wax-pattern rod that diameter is 1 ~ 2mm is suppressed;
3) exhaust wax-pattern rod is cut into the long exhaust wax-pattern section of 8mm to 15mm;
4) easily produce the position of defect for foundry goods, the welding of casting wax mould relevant position is vented excellent wax-pattern section and smoothing cunning;
5) butt welding connects the casting wax mould being vented excellent wax-pattern section and carries out combination module, oil removing, shell processed, dewaxing and preroast process successively;
6) to the formwork after preroast process, be stained with the end formwork being vented excellent wax-pattern section with grinder buffing, until steam vent exposes, formwork is ready to complete;
7) roasting, fusing cast, shelling and the process of cutting polishing mark are carried out to ready formwork.
2. the method for casting owed by solution precision casting according to claim 1, it is characterized in that: described step 1) in, erection support is tile, and thickness is 1.4 ~ 1.6mm, and thick after surrounding chamfering is 0.8 ~ 1.2mm, and edge is the thinnest.
3. the method for casting owed by solution precision casting according to claim 1, it is characterized in that: described step 1) in, support is cone thin-wall part, and the part thickness that mounting edge is the thinnest is less than 1mm.
4. the method for casting owed by solution precision casting according to claim 1, it is characterized in that: described step 1) in, the outer mounting edge of support plate is wedge shape thin-wall part, and the thickness of the thinnest mounting edge is 2mm.
5. the method for casting owed by the solution precision casting according to Claims 1-4 any one, it is characterized in that: described step 7) in, when casting process generation steam vent flash situation, use fire clay gently to smear flash place.
6. the method for casting owed by the solution precision casting according to Claims 1-4 any one, it is characterized in that: described step 7) in, remove all exhausts excellent metal during polishing completely, make cast(ing) surface smooth, noresidue vestige.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410604157.5A CN104325079A (en) | 2014-10-30 | 2014-10-30 | Method for solving undercasting of precise casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410604157.5A CN104325079A (en) | 2014-10-30 | 2014-10-30 | Method for solving undercasting of precise casting |
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| Publication Number | Publication Date |
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| CN104325079A true CN104325079A (en) | 2015-02-04 |
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| CN201410604157.5A Pending CN104325079A (en) | 2014-10-30 | 2014-10-30 | Method for solving undercasting of precise casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207231A (en) * | 2020-09-10 | 2021-01-12 | 柏丽德珠宝(广州)有限公司 | Wax tree structure for metal jewelry |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100476A (en) * | 1986-01-30 | 1987-09-09 | 希契纳尔制造公司 | The casting mold of exhaust and manufacture method thereof |
| US5735336A (en) * | 1995-08-11 | 1998-04-07 | Johnson & Johnson Professional, Inc. | Investment casting method utilizing polymeric casting patterns |
| CN102441642A (en) * | 2011-12-06 | 2012-05-09 | 中国航空工业集团公司北京航空材料研究院 | Method for preventing blades of whole turbine impeller of high temperature alloy from under-casting |
| CN103071765A (en) * | 2012-12-27 | 2013-05-01 | 清华大学 | Partial air cooling method for precast aperture passage in investment casting shell |
| CN103506574A (en) * | 2012-06-27 | 2014-01-15 | 嘉善鑫海精密铸件有限公司 | Casting method for pouring and molding thin-wall investment pattern steel casting |
| CN103586413A (en) * | 2013-11-18 | 2014-02-19 | 中国南方航空工业(集团)有限公司 | Precision casting method for multi-cavity structural part |
-
2014
- 2014-10-30 CN CN201410604157.5A patent/CN104325079A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100476A (en) * | 1986-01-30 | 1987-09-09 | 希契纳尔制造公司 | The casting mold of exhaust and manufacture method thereof |
| US5735336A (en) * | 1995-08-11 | 1998-04-07 | Johnson & Johnson Professional, Inc. | Investment casting method utilizing polymeric casting patterns |
| CN102441642A (en) * | 2011-12-06 | 2012-05-09 | 中国航空工业集团公司北京航空材料研究院 | Method for preventing blades of whole turbine impeller of high temperature alloy from under-casting |
| CN103506574A (en) * | 2012-06-27 | 2014-01-15 | 嘉善鑫海精密铸件有限公司 | Casting method for pouring and molding thin-wall investment pattern steel casting |
| CN103071765A (en) * | 2012-12-27 | 2013-05-01 | 清华大学 | Partial air cooling method for precast aperture passage in investment casting shell |
| CN103586413A (en) * | 2013-11-18 | 2014-02-19 | 中国南方航空工业(集团)有限公司 | Precision casting method for multi-cavity structural part |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207231A (en) * | 2020-09-10 | 2021-01-12 | 柏丽德珠宝(广州)有限公司 | Wax tree structure for metal jewelry |
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Application publication date: 20150204 |
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