KR101925514B1 - Apparatus and Method for anticorrosing of Mold Cooling Channel - Google Patents
Apparatus and Method for anticorrosing of Mold Cooling Channel Download PDFInfo
- Publication number
- KR101925514B1 KR101925514B1 KR1020150057931A KR20150057931A KR101925514B1 KR 101925514 B1 KR101925514 B1 KR 101925514B1 KR 1020150057931 A KR1020150057931 A KR 1020150057931A KR 20150057931 A KR20150057931 A KR 20150057931A KR 101925514 B1 KR101925514 B1 KR 101925514B1
- Authority
- KR
- South Korea
- Prior art keywords
- mold
- cooling passage
- cooling
- corrosion inhibitor
- cooling channel
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/84—Safety devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention primarily removes foreign matter such as scale generated in the cooling channel by spraying air into the cooling channel of the mold, and secondly, the corrosion inhibitor is filled in the cooling channel in which scale and moisture are removed, The present invention relates to an apparatus for preventing corrosion of a mold cooling passage and a method for preventing corrosion of a mold cooling passage, An air injection unit for injecting compressed air into the cooling passage to remove moisture and scale from the cooling passage; A supply line for connecting the storage tank to one end of the cooling passage; a pump for supplying the corrosion inhibitor in the storage tank to the cooling passage through a supply line; And an opening / closing member that closes one end and the other end of the cooling passage in a state that the cooling passage is closed.
Description
More particularly, the present invention relates to an apparatus and a method for preventing corrosion of a cooling passage of a mold, more specifically, to a method of injecting air into a cooling passage of a mold for injection molding to remove scale and sludge, To an apparatus and a method for preventing corrosion of a cooling passage of a mold, which can prevent corrosion of the cooling passage by storing the corrosion inhibitor in the oil passage.
As the use of light metal alloy materials such as aluminum (Al), magnesium (Mg) or zinc (Zn) alloys for the light weight and high performance of transportation machines and household appliances has been expanded, gravity casting using a die, low pressure casting, Technologies such as casting, forging, rolling and extrusion techniques are also becoming increasingly diverse and advanced.
The metal processing method using these molds (SKD 61, which is a main material commonly used for Fe-based special steels, for example, 0.4% C-5% Cr-Mo-V system), depends on the quality of the mold, Life and the like, which is a very important factor, and efforts are being made to increase the quality of the mold.
Among them, temperature control of molds is a key management factor for continuous metal processing (casting, forging, etc.). Normally, in order to maintain the mold temperature uniformly, it is necessary to remove the amount of heat per unit cycle (unit time) applied to the mold within that time, thereby enabling continuous operation without trouble. Therefore, the cooling ducts are designed in various forms such as an annular shape, an angular shape, a bending shape, a bending shape, a baffle shape and the like according to the shape of the mold, and the heat input is removed by flowing the cooling water through the cooling passage have.
However, the cooling flow path inside the mold has a very complicated structure with different shapes and sizes. In recent years, as a means for obtaining high quality, the cooling flow path is designed in the cooling flow path up to the fine pin shape, Lt; / RTI > Most of all, the biggest problem is that rust of various scales or sludge due to corrosion occurs in the inside of the cooling channel due to reaction between dissolved oxygen and the mold material due to water (industrial water) used for cooling, The cooling performance of the mold is rapidly deteriorated, resulting in product quality problems as well as problems such as lowering of productivity, sticking during operation, and ultimately lowering mold life. In addition, this phenomenon causes the problem that the water remaining in the cooling channel and the oxygen in the air abruptly corrode the mold material during the long-term storage of the mold after the operation.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method and apparatus for injecting air into a cooling flow path of a mold to remove foreign substances such as scale and moisture generated in the cooling flow path, The present invention also provides an apparatus and method for preventing corrosion of a cooling channel by filling a corrosion inhibitor in the removed cooling channel and holding the same for a predetermined period of time.
According to another aspect of the present invention, there is provided an apparatus for preventing corrosion of a mold cooling passage, the apparatus comprising: a mold cooling passage which is connected to one end of a mold cooling passage for injecting compressed air into a cooling passage of the mold, An injection unit; A supply means for supplying a corrosion inhibitor into the cooling passage and an opening and closing member for closing one end and the other end of the cooling passage in a state where the corrosion inhibitor is filled in the cooling passage .
A method for preventing corrosion of a mold cooling passage by using the mold cooling passage corrosion preventing apparatus of the present invention includes a first step of injecting compressed air into a cooling passage of a mold to remove moisture and scale in the cooling passage; A second step of supplying a corrosion inhibitor to the cooling channel of the mold; And a third step of closing both ends of the cooling passage when the corrosion inhibitor is filled in the cooling passage.
According to the present invention, since the moisture and scale remaining in the cooling passage of the metal mold are cleanly removed by the compressed air, and the corrosion inhibitor is filled in the cooling passage in this state, the corrosion is not generated in the cooling passage during storage .
Therefore, when the molding operation is carried out using the stored mold, it is possible to minimize the clogging of the pipe due to the scale, thereby preventing defects such as shrinkage, deformation, It is possible to prevent a decrease in productivity and a reduction in mold life.
1 is a block diagram showing the configuration of an apparatus for preventing corrosion of a mold cooling channel according to an embodiment of the present invention.
2 is a flowchart illustrating a corrosion prevention method of a mold cooling passage according to the present invention.
3 is a photograph showing a state before the scale of the cooling passage of the mold is removed and a state where the scale is removed by spraying compressed air to the cooling passage of the mold.
Fig. 4 is a photograph showing a reaction of a metal specimen having the same composition as that of a mold to a specimen as time goes by when the specimen is immersed in a vessel (left side in the drawing) in which general cooling water is stored (left side in the drawing) .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an apparatus and method for preventing corrosion of a die cooling passage according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an apparatus for preventing corrosion of a mold cooling passage according to an embodiment of the present invention. The apparatus for preventing corrosion of a mold cooling passage according to the present invention is connected to one end of a
The air injection unit includes an
The corrosion inhibitor supply unit includes a supply means for supplying a corrosion inhibitor into the
The supply means includes a
The opening and closing member includes an
In this embodiment, the
The corrosion inhibitor may be selected from a variety of well-known corrosion inhibitors. The corrosion inhibitor may be selected from the group consisting of HCl, which exhibits excellent performance in removing Fe 2 O 3 , CaO, SiO 2 , MgO and MnO, Based or H 3 PO 4 based acid detergent or an NaOH-based corrosion inhibitor exhibiting an excellent effect for preventing corrosion is preferably diluted with water.
A method for preventing corrosion of a mold cooling passage according to the present invention is a method for preventing corrosion of a mold cooling passage according to the present invention, A step S2 for removing water and scale, a step S2 for supplying a corrosion inhibitor to the
This will be described in more detail as follows.
First, when the
When the water and the scale in the
When the corrosion inhibitor is filled in the
When the inside of the
As described above, when compressed air is primarily injected into the
3 is a photograph showing a state before the scale of the cooling passage of the metal mold is removed (left side in the drawing) and a state in which the scale is removed by spraying compressed air to the cooling flow path of the metal mold A metal specimen of the same composition as the mold was immersed in a container (left container) containing ordinary cooling water and a container containing the corrosion inhibitor (right container) for 7 days, 15 days, 30 days and 120 days. It is a photograph.
3 and 4, the moisture and scale remaining in the
Therefore, when the molding operation is carried out using the stored mold, it is possible to minimize the clogging of the pipe due to the scale, thereby preventing defects such as shrinkage, deformation, It is possible to prevent a decrease in productivity and a reduction in mold life.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.
1: cooling flow path 11: air supply line
12: Air compressor 21: Storage tank
22: supply line 23: pump
25: drain line 31: inlet valve
32: Outlet valve 40: Control panel
Claims (7)
The supply means includes a storage tank 21 in which the corrosion inhibitor is stored, a supply line 22 connecting the storage tank 21 and the inlet valve 31, a corrosion inhibitor in the storage tank 21, A pump 23 for supplying the refrigerant to the cooling channel 1 through a supply line 22 and an inlet valve 31 and a discharge pump 32 for connecting the outlet valve 32 and the storage tank 21, And a drain line (25) for guiding the corrosion inhibitor to the storage tank (21)
The air injection unit includes an air supply line 11 whose one end is connected to the inlet valve 31 and an air compressor 12 which supplies compressed air through the air supply line 11 A method for preventing corrosion of a mold cooling channel by using a corrosion prevention device for a mold cooling channel,
(a) opening the inlet valve (31) and the outlet valve (32);
(b) operating the air compressor (12) to inject compressed air into the cooling channel (1) through the inlet valve (31) to remove moisture and scale in the cooling channel (1);
(c) operating the pump 23 to supply the corrosion inhibitor into the cooling channel 1 through the inlet valve 31;
(d) closing the inlet and outlet valves 31 and 32 simultaneously to close both ends of the cooling channel 1 when the cooling channel 1 is filled with the corrosion inhibitor;
(e) storing the mold for a predetermined time in a state where both ends of the cooling channel (1) are closed by an inlet valve (31) and an outlet valve (32);
(f) opening the outlet valve (32) to discharge the corrosion inhibitor in the cooling channel (1) through the drain line (25) to the storage tank (21);
And cooling the mold cooling passage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150057931A KR101925514B1 (en) | 2015-04-24 | 2015-04-24 | Apparatus and Method for anticorrosing of Mold Cooling Channel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150057931A KR101925514B1 (en) | 2015-04-24 | 2015-04-24 | Apparatus and Method for anticorrosing of Mold Cooling Channel |
Related Child Applications (1)
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KR1020160183689A Division KR20170004944A (en) | 2016-12-30 | 2016-12-30 | Apparatus and Method for Anticorrosing of Mold Cooling Channel |
Publications (2)
Publication Number | Publication Date |
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KR20160126624A KR20160126624A (en) | 2016-11-02 |
KR101925514B1 true KR101925514B1 (en) | 2018-12-06 |
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KR1020150057931A KR101925514B1 (en) | 2015-04-24 | 2015-04-24 | Apparatus and Method for anticorrosing of Mold Cooling Channel |
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KR102160103B1 (en) * | 2019-08-23 | 2020-09-29 | 주식회사 유라테크놀로지 | Cleaning method of semiconductor manufacturing apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004353009A (en) * | 2003-05-27 | 2004-12-16 | Ryoei Engineering Kk | Method for storing metallic member having cooling channel |
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JP4475260B2 (en) | 2006-07-26 | 2010-06-09 | トヨタ自動車株式会社 | Molding mold cooling system and molding mold cooling method |
KR101027692B1 (en) | 2008-07-25 | 2011-04-12 | 진아다크로 주식회사 | Apparatus for eliminating rust in passage of cooling structure body in the metal mold and method for eliminating rust |
KR101384310B1 (en) | 2013-05-20 | 2014-04-11 | 대진아이엠 주식회사 | Complex cooling device mold of injection molding |
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JP2004353009A (en) * | 2003-05-27 | 2004-12-16 | Ryoei Engineering Kk | Method for storing metallic member having cooling channel |
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Free format text: TRIAL NUMBER: 2016101007390; TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20161230 Effective date: 20181023 |
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