CN103506574B - The casting method of thin-walled Steel Casting in Investment Casting moulding by casting - Google Patents
The casting method of thin-walled Steel Casting in Investment Casting moulding by casting Download PDFInfo
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- CN103506574B CN103506574B CN201210227767.9A CN201210227767A CN103506574B CN 103506574 B CN103506574 B CN 103506574B CN 201210227767 A CN201210227767 A CN 201210227767A CN 103506574 B CN103506574 B CN 103506574B
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Abstract
The invention discloses a kind of casting method of thin-walled Steel Casting in Investment Casting moulding by casting; Its objective is the situation in order to avoid there is foundry goods shrinkage cavity, loose or casting deformation; It comprises the following steps: a, first to prepare many diameters be 0.5mm-1mm, and length is the thread metal object of 50mm-100mm, and at the thick wax of outer surface brushing one deck 0.1mm-0.2mm of above-mentioned thread metal object; B, then by the wax-pattern group after the thread metal object insertion group tree in previous step, insertion depth is 4mm-8mm; C, then by the thread metal object in previous step with wax-pattern group stickness paint slurry and be coated with hanging sand; D, to be formed after formwork on wax-pattern group surface, first destroy the part formwork of thread metal object other end head surface, extract thread metal object out, then carry out dewaxing, roasting; When e, last pour steel, the cavity formed after formwork extracts thread metal object is utilized to carry out drainage.The present invention improves casting qualified rate.
Description
Technical field
The present invention relates to a kind of casting method, particularly the casting method of thin-walled Steel Casting in Investment Casting moulding by casting.
Background technology
Steel-casting because of its mechanical performance high, low price, is widely used in the fields such as Aeronautics and Astronautics, boats and ships, electronics, five metals, pump valve; But because it is than great, this proportion is 7.8 grams/cm3, the weight such as the parts be assembled into by it or equipment are large, even occur overweight condition, constrain effect of parts and equipment to a certain extent.Therefore, in steel casting structural design, when not affecting mechanical performance, gradually to thin-walled, light-duty development, to alleviate the weight of parts or equipment, improve its effect.
But due to the intrinsic casting characteristics of steel casting, thin wall type foundry goods not easily moulding by casting, particularly wall thickness are less than the product of below 2mm, easily produce defects such as owing casting, cold shut, misrun, qualification rate is not high, has a strong impact on manufacturing schedule and increases production cost.
With regard to investment casting method, for the defect problem such as deficient casting, cold shut, misrun of thin wall type foundry goods, traditional method is by improving liquid steel temperature or improving poring rate or set up the methods such as cast drainage muscle; Wherein increase the method for cast drainage muscle, as shown in fig. 1.But these methods are with and are served negative issue simultaneously, as: the tendency increasing foundry goods shrinkage cavity, the defect such as loose, drainage muscle is pullled foundry goods and is caused distortion, increases processing cost etc.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, a kind of situation avoiding occurring foundry goods shrinkage cavity, loose or casting deformation is provided, and the casting method of thin-walled Steel Casting in Investment Casting moulding by casting of production cost can also be reduced.
To achieve these goals, the casting method of the thin-walled Steel Casting in Investment Casting moulding by casting designed by the present invention, it comprises the following steps:
A, first to prepare many diameters be 0.5mm-1mm, and length is the thread metal object of 50mm-100mm, and at the thick wax of outer surface brushing one deck 0.1mm-0.2mm of above-mentioned thread metal object;
B, then by the wax-pattern group after the thread metal object insertion group tree in previous step, insertion depth is 4mm-8mm;
C, then by the thread metal object in previous step with wax-pattern group stickness paint slurry and be coated with hanging sand;
D, to be formed after formwork on wax-pattern group surface, first destroy the part formwork of thread metal object other end head surface, extract thread metal object out, then carry out dewaxing, roasting;
When e, last pour steel, the cavity formed after formwork extracts thread metal object is utilized to carry out drainage.
Another kind of casting method of the present invention, it specifically comprises the following steps:
A, first prepare many diameter 0.5mm-1mm, length is the fine rule of 50mm-100mm, require that the bending strength of above-mentioned fine rule is greater than 15Mpa, and scaling loss gasification temperature is lower than 800 DEG C simultaneously;
B, then the fine rule one end glue in previous step is bonded at group tree after wax-pattern group on, bond length is 4mm-6mm;
C, then by the fine rule in previous step with wax-pattern group stickness paint slurry and be coated with hanging sand;
D, to be formed after formwork on wax-pattern group surface, then carry out dewaxing, roasting, on formwork, form cavity after fine rule burning;
When e, last pour steel, the cavity in previous step is utilized to carry out drainage.
The casting method of the thin-walled Steel Casting in Investment Casting moulding by casting that the present invention obtains, when adopting the method to carry out moulding by casting, it does not only occur owing the situations such as casting, cold shut, misrun, can not cause again foundry goods shrinkage cavity, loose or distortion simultaneously, promote casting qualified rate; And enterprise's production cost can also be reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation in conventional casting methods, formwork increasing cast drainage muscle;
Fig. 2 is that in embodiment 1, wax-pattern group plugs the schematic diagram after iron wire;
Fig. 3 is the structural representation at A-A place in Fig. 2;
Fig. 4 be in embodiment 1 formwork make after schematic diagram;
Fig. 5 is the structural representation at B-B place in Fig. 4;
Fig. 6 is that in embodiment 2, wax-pattern group plugs the schematic diagram after rigid plastics line;
Fig. 7 is the structural representation at C-C place in Fig. 6;
Fig. 8 be in embodiment 2 formwork make after schematic diagram;
Fig. 9 is the structural representation at D-D place in Fig. 8.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the casting method of the thin-walled Steel Casting in Investment Casting moulding by casting that the present embodiment provides, it comprises the following steps:
A, first to prepare many diameters be 0.5mm, and length is the straight iron wire of 50mm, and at the thick wax of outer surface brushing one deck 0.1mm of above-mentioned straight iron wire;
B, then by the wax-pattern group 3 after the straight iron wire insertion group tree in previous step, insertion depth is 4mm;
C, then by the straight iron wire in previous step with wax-pattern group 3 stickness paint slurry and be coated with hanging sand;
D, to be formed after formwork 4 on wax-pattern group 3 surface, first destroy the part formwork 4 of straight iron wire other end head surface, extract straight iron wire out, then carry out dewaxing, roasting;
When e, last pour steel, the cavity 5 formed after formwork 4 extracts straight iron wire is utilized to carry out drainage.
Embodiment 2
As described in Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the casting method of the thin-walled Steel Casting in Investment Casting moulding by casting that the present embodiment provides, it comprises the following steps:
A, first prepare many diameter 1mm, length is the rigid plastics line of 100mm, and the bending strength of above-mentioned rigid plastics line is greater than 15Mpa, and scaling loss gasification temperature is lower than 800 DEG C;
B, then the rigid plastics line one end glue in previous step is bonded at group tree after wax-pattern group 3 on, bond length is 6mm;
C, then by the rigid plastics line in previous step with wax-pattern group 3 stickness paint slurry and be coated with hanging sand;
D, to be formed after formwork 4 on wax-pattern group 3 surface, then carry out dewaxing, roasting, on formwork 4, form cavity 5 after the burning of rigid plastics line;
When e, last pour steel, the cavity 5 in previous step is utilized to carry out drainage.
Rigid plastics common in above-mentioned has polyformaldehyde, polystyrene or Merlon etc.
Claims (1)
1. a casting method for thin-walled Steel Casting in Investment Casting moulding by casting, is characterized in that, it comprises the following steps:
A, first prepare many diameter 0.5mm-1mm, length is the fine rule (6) of 50mm-100mm, the bending strength of described fine rule (6) be greater than 15MPa and scaling loss gasification temperature lower than 800 DEG C;
B, then fine rule (6) one end glue in previous step is bonded at group tree after wax-pattern group (3) on, bond length is 4mm-6mm;
C, then by the fine rule (6) in previous step with wax-pattern group (3) stickness paint slurry and be coated with hanging sand;
D, after wax-pattern group (3) surface forms formwork (4), then carry out dewaxing, roasting, on formwork (4), form cavity (5) after fine rule (6) burning;
When e, last pour steel, the cavity (5) in previous step is utilized to carry out drainage.
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CN103506574B true CN103506574B (en) | 2015-11-25 |
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Families Citing this family (5)
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CN104325079A (en) * | 2014-10-30 | 2015-02-04 | 西安航空动力股份有限公司 | Method for solving undercasting of precise casting |
CN105478678A (en) * | 2015-12-04 | 2016-04-13 | 霍山县忠福铸造有限责任公司 | Manufacturing method for axle castings of mining machinery |
EP3421156B1 (en) * | 2017-06-30 | 2020-06-24 | Ansaldo Energia Switzerland AG | Casting method for producing a blade for a gas turbine |
CN107812887A (en) * | 2017-09-15 | 2018-03-20 | 鹰普航空零部件(无锡)有限公司 | The anti-shrinkage porosite casting technique of tube-like thin-wall stainless steel adapting piece |
CN111604470B (en) * | 2020-07-10 | 2021-02-02 | 西北工业大学 | Preparation method of ultrathin-wall casting |
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CN85107885A (en) * | 1985-10-28 | 1987-05-06 | 梁·汤姆 | The metal flow passage of used in lost wax casting |
US6050325A (en) * | 1998-09-16 | 2000-04-18 | Pcc Airfoils, Inc. | Method of casting a thin wall |
CN101480696A (en) * | 2008-01-11 | 2009-07-15 | 中国科学院金属研究所 | Method for preparing high-temperature alloy thin-section casting |
CN101530892A (en) * | 2009-03-31 | 2009-09-16 | 宁波通达精密铸造有限公司 | Investment casting thin-walled part casting method |
CN101954454A (en) * | 2010-10-14 | 2011-01-26 | 安徽应流集团霍山铸造有限公司 | Method for eliminating casting heating cracks |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS55120447A (en) * | 1979-03-07 | 1980-09-16 | Nissan Motor Co Ltd | Casting method |
JPS6195739A (en) * | 1984-10-18 | 1986-05-14 | Meiwa Sangyo Kk | Production of metallic mold for molding laminated body |
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- 2012-06-27 CN CN201210227767.9A patent/CN103506574B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN85107885A (en) * | 1985-10-28 | 1987-05-06 | 梁·汤姆 | The metal flow passage of used in lost wax casting |
US6050325A (en) * | 1998-09-16 | 2000-04-18 | Pcc Airfoils, Inc. | Method of casting a thin wall |
CN101480696A (en) * | 2008-01-11 | 2009-07-15 | 中国科学院金属研究所 | Method for preparing high-temperature alloy thin-section casting |
CN101530892A (en) * | 2009-03-31 | 2009-09-16 | 宁波通达精密铸造有限公司 | Investment casting thin-walled part casting method |
CN101954454A (en) * | 2010-10-14 | 2011-01-26 | 安徽应流集团霍山铸造有限公司 | Method for eliminating casting heating cracks |
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Denomination of invention: Casting method for casting thin wall investment casting steel Effective date of registration: 20220426 Granted publication date: 20151125 Pledgee: Zhejiang Jiashan rural commercial bank Limited by Share Ltd. Tao Zhuang sub branch Pledgor: JIASHAN SINHAI PRECISION CASTING CO.,LTD. Registration number: Y2022330000608 |
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