CN102990015B - Method for manufacturing high-density shell-mould and shell-core sand ejecting head - Google Patents
Method for manufacturing high-density shell-mould and shell-core sand ejecting head Download PDFInfo
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- CN102990015B CN102990015B CN201210440371.2A CN201210440371A CN102990015B CN 102990015 B CN102990015 B CN 102990015B CN 201210440371 A CN201210440371 A CN 201210440371A CN 102990015 B CN102990015 B CN 102990015B
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Abstract
The invention relates to a method for manufacturing high-density shell-mould and shell-core sand ejecting head. An air inlet is formed in one end of an air storage tank, the air storage tank is communicated with a sand ejecting valve through an air pipe, the sand ejecting valve and an ejecting head are sealed by adopting a heat-resistant silicon rubber ring, precoated sands are filled in the ejecting head, and a sand ejecting hole is formed in one end part of the ejecting head. According to the method, a shell core and a shell mould obtained by the method are compact in structure, the surface roughness grade of a casted product is high, the surface roughness grade of the casted steel casting piece is Ra50, the surface roughness grade of the casted gray iron casting piece is Ra25, and the surface roughness grade of the casted spheroidal graphite cast iron casting piece is Ra25.
Description
Technical field
The invention belongs to machine casting technical field, relate to a kind of method making high-compactness shell mould, shell core sand-shooting head.
Background technology
Now general shell molding machine, the sand-shooting head of shell core machine, pneuamtic shutoff valves is all adopted to control to penetrate sand, when penetrating shell mould, the shell core that work is complicated, volume is larger, the shell core obtained and shell mould are fine and close not, the surface roughness grade adopting above-mentioned shell core and shell mould to make is not high, usually only has Ra100.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of obtained shell core and shell structure fine and close, cast the method for the high making high-compactness shell mould of the roughness grade of product, shell core sand-shooting head.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high-compactness shell mould, shell core sand-shooting head, comprise air accumulator, Sand jet valve and penetrate head, air admission hole is provided with in one end of air accumulator, air accumulator is connected with Sand jet valve by tracheae, Sand jet valve and penetrate between head and adopt heat-resistant silicon rubber circle to seal, penetrate head built with precoated sand, be provided with sand-spraying hole in the end penetrating head.
The preparation method of above-mentioned high-compactness shell mould, shell core sand-shooting head is:
The first step makes Sand jet valve: when making Sand jet valve, adopt by the interlock dish valve of solenoid control as Sand jet valve, its capacity >=12 each second cube (mark pressure), the admission pressure≤0.3MPa of Sand jet valve;
Second step makes to penetrate head: penetrate head and formed by Plate Welding aft-loaded airfoil, and the storage sand amount of penetrating head is 3 times of the single husky core sand amount of the system of penetrating, and different according to the core of the system of penetrating, design different loopholes, principle is: every 1KG weight core, loophole sectional area 100m ㎡;
3rd step makes air accumulator: the requirement of air accumulator is every 1KG weight core, and the volume of air accumulator is 0.1 cubic metre; Finally by through air accumulator, the Sand jet valve obtained by above-mentioned three steps with penetrate head group and dress up high-compactness shell mould, shell core sand-shooting head, above-mentioned sand-shooting head is assemblied in shell molding machine or shell core machine just can penetrate and makes shell core and to live shell mould.
Good effect of the present invention is: adopt the shell core that obtains of the present invention and shell structure fine and close, the roughness grade that institute casts product is high, and the surface roughness that the foundry goods that the present invention casts reaches is steel be Ra50 casting pig is Ra25, spheroidal graphite cast-iron Ra25.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-air accumulator, 2-air admission hole, 3-Sand jet valve, 4-silicon rubber loop, 5-penetrate head, 6-precoated sand, 7-sand-spraying hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
See Fig. 1, a kind of high-compactness shell mould, shell core sand-shooting head, comprise air accumulator, Sand jet valve and penetrate head, air admission hole is provided with in one end of air accumulator, air accumulator is connected with Sand jet valve by tracheae, Sand jet valve and penetrate between head and adopt heat-resistant silicon rubber circle to seal, is penetrating head built with precoated sand, is being provided with sand-spraying hole in the end penetrating head.
The preparation method of above-mentioned high-compactness shell mould, shell core sand-shooting head is:
The first step makes Sand jet valve: when making Sand jet valve, adopt by the interlock dish valve of solenoid control as Sand jet valve, capacity >=12 each second cube (mark pressure), the admission pressure≤0.3MPa of Sand jet valve;
Second step makes to penetrate head: penetrate head and formed by Plate Welding aft-loaded airfoil, and the storage sand amount of penetrating head is 3 times of the single husky core sand amount of the system of penetrating, and different according to the core of the system of penetrating, design different loopholes, principle is: every 1KG weight core, loophole sectional area 100m ㎡;
3rd step makes air accumulator: the requirement of air accumulator is every 1KG weight core, and the volume of air accumulator is 0.1 cubic metre; Finally by through air accumulator, the Sand jet valve obtained by above-mentioned three steps with penetrate head group and dress up high-compactness shell mould, shell core sand-shooting head, above-mentioned sand-shooting head is assemblied in shell molding machine or shell core machine just can penetrate and makes shell core and to live shell mould.
Use sand-shooting head of the present invention obtains shell mould, shell core casts out foundry goods compared with traditional shell mould, shell moud casting part: wherein cast surface roughness are compared: the surface roughness that shell mould, shell moud casting reach in the past is steel be Ra100 casting pig is Ra50, spheroidal graphite cast-iron Ra50; To adopt the surface roughness that reaches of foundry goods of the present invention's casting to be steel be Ra50 casting pig is Ra25, spheroidal graphite cast-iron Ra25.
Claims (1)
1. one kind makes the method for high-compactness shell mould, shell core sand-shooting head, this high-compactness shell mould, shell core sand-shooting head, comprise air accumulator, Sand jet valve and penetrate head, air admission hole is provided with in one end of air accumulator, air accumulator is connected with Sand jet valve by tracheae, Sand jet valve and penetrate between head and adopt heat-resistant silicon rubber circle to seal, and is penetrating head built with precoated sand, be provided with sand-spraying hole in the end penetrating head, it is characterized in that processing step is:
The first step makes Sand jet valve: when making Sand jet valve, adopt by the interlock dish valve of solenoid control as Sand jet valve, its each second capacity >=12 cube, the admission pressure≤0.3MPa of Sand jet valve;
Second step makes to penetrate head: penetrate head and formed by Plate Welding aft-loaded airfoil, and the storage sand amount of penetrating head is 3 times of the system of penetrating single core sand amount, different according to the core of the system of penetrating, and designs different loopholes, every 1KG weight core, loophole sectional area 100m ㎡;
3rd step makes air accumulator: the requirement of air accumulator is every 1KG weight core, and the volume of air accumulator is 0.1 cubic metre; Finally by through air accumulator, the Sand jet valve obtained by above-mentioned three steps with penetrate head group and dress up high-compactness shell mould, shell core sand-shooting head, above-mentioned sand-shooting head is assemblied in shell molding machine or shell core machine just can penetrate and makes shell core or shell mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440371.2A CN102990015B (en) | 2012-11-07 | 2012-11-07 | Method for manufacturing high-density shell-mould and shell-core sand ejecting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440371.2A CN102990015B (en) | 2012-11-07 | 2012-11-07 | Method for manufacturing high-density shell-mould and shell-core sand ejecting head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102990015A CN102990015A (en) | 2013-03-27 |
| CN102990015B true CN102990015B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210440371.2A Active CN102990015B (en) | 2012-11-07 | 2012-11-07 | Method for manufacturing high-density shell-mould and shell-core sand ejecting head |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2701552Y (en) * | 2004-06-07 | 2005-05-25 | 苏州工业园区明志铸造装备有限公司 | Sand shooting mechanism for core shooter |
| CN201223924Y (en) * | 2008-07-03 | 2009-04-22 | 溧阳市科华机械制造有限公司 | Small-sized core shooter with mould opening control function |
| CN201415257Y (en) * | 2009-05-27 | 2010-03-03 | 路达(厦门)工业有限公司 | Multistation modular sand-shooting former |
| CN202367160U (en) * | 2011-12-19 | 2012-08-08 | 致恒(天津)实业有限公司 | Hydraulic system for compaction cylinder of molding machine |
-
2012
- 2012-11-07 CN CN201210440371.2A patent/CN102990015B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2701552Y (en) * | 2004-06-07 | 2005-05-25 | 苏州工业园区明志铸造装备有限公司 | Sand shooting mechanism for core shooter |
| CN201223924Y (en) * | 2008-07-03 | 2009-04-22 | 溧阳市科华机械制造有限公司 | Small-sized core shooter with mould opening control function |
| CN201415257Y (en) * | 2009-05-27 | 2010-03-03 | 路达(厦门)工业有限公司 | Multistation modular sand-shooting former |
| CN202367160U (en) * | 2011-12-19 | 2012-08-08 | 致恒(天津)实业有限公司 | Hydraulic system for compaction cylinder of molding machine |
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| Publication number | Publication date |
|---|---|
| CN102990015A (en) | 2013-03-27 |
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