CN113414354A - Method for preventing copper pipe from being melted through - Google Patents
Method for preventing copper pipe from being melted through Download PDFInfo
- Publication number
- CN113414354A CN113414354A CN202110587807.XA CN202110587807A CN113414354A CN 113414354 A CN113414354 A CN 113414354A CN 202110587807 A CN202110587807 A CN 202110587807A CN 113414354 A CN113414354 A CN 113414354A
- Authority
- CN
- China
- Prior art keywords
- port
- sand
- coating
- copper pipe
- copper
- 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
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 75
- 239000010949 copper Substances 0.000 title claims abstract description 75
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims description 49
- 238000000576 coating method Methods 0.000 claims description 49
- 239000004576 sand Substances 0.000 claims description 36
- 239000003110 molding sand Substances 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 8
- 229910000570 Cupronickel Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
Abstract
The invention belongs to the technical field of casting, and particularly relates to a method for preventing a copper pipe from being melted through.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a method for preventing a copper pipe from being melted through.
Background
In the production process of the supercharger type product made of cast iron, the product generally comprises the special-shaped curved surface oil holes with small apertures, and the oil holes are cast in the casting process. Because the aperture is smaller and the hole is deeper, the sand-in-iron phenomenon is usually caused by casting by a sand core, namely the phenomenon of metal liquid permeating and adhering sand, so that the oil hole cannot be cast, and the oil hole is cast by adopting an embedded casting pipeline mode when a product is designed. However, the oil hole of the supercharger product has small aperture, deeper hole and large shape bending, so that the embedded casting pipe is usually made of thin-wall copper-nickel alloy material.
Although the copper-nickel alloy pipe can solve the problems, the pouring temperature of cast iron is usually 1350 ℃ or above, the melting point of the copper-nickel alloy is only 935 ℃, and the embedded cast copper pipe is usually melted through by molten iron in actual production and cannot be cast with an oil hole required by a casting.
Disclosure of Invention
Therefore, it is necessary to provide a method for preventing the penetration of the copper pipe in order to solve the problem that the oil hole required by the casting cannot be cast due to the penetration of molten iron when the casting of the copper pipe embedded with the copper-nickel alloy material is cast.
A method of preventing copper tubing from being melted through, the method comprising:
pouring a coating into the inner wall of the copper pipe to enable the coating to completely cover the inner wall of the copper pipe;
drying the coating;
the copper pipe comprises a first port and a second port, and the first port is blocked;
filling loose sand from the second port, stopping filling the loose sand when the loose sand is filled to a set distance from the second port, and filling molding sand at the set distance of the second port and compacting the molding sand;
dredging the first port, flowing loose sand away from the first port at a set distance, and filling molding sand at a set distance of the second port and compacting the molding sand;
and assembling the copper pipe according to the core assembly sequence of the sand core of the casting.
As an embodiment of the present invention, the paint is an alcohol paint. The coating is a water-based coating, a drying step is required, and the wall of the copper pipe is small and difficult to dry, so that the coating is time-consuming and labor-consuming. Therefore, the coating is preferably alcohol coating, and the coating attached to the inner wall can be dried by igniting the alcohol coating, so that the operation is convenient, and the time and the labor are saved.
As an embodiment of the present invention, the step of drying the coating material is to ignite the alcohol coating material and wait for the surface of the coating material to dry. The alcohol coating is a coating with high refractoriness, the coating is uniformly poured into the inner wall of the copper pipe and completely covers the inner wall, the alcohol coating is ignited, and the surface of the coating is dried, so that the copper pipe can be prevented from being locally melted through in the casting pouring process, molten iron is prevented from contacting with an internal sand core to form iron-coated sand to block the copper pipe.
As an embodiment of the present invention, the set distance ranges from 10mm to 15 mm.
As an embodiment of the present invention, after the step of "drying the coating", after the coating is dried, the coating on the outer wall surface of the copper pipe is removed by sanding with sand paper; thus avoiding influencing the embedding casting operation and improving the casting quality.
As an embodiment of the invention, after the step of dredging the first port, flowing loose sand with a set distance from the first port, filling molding sand in a position with a set distance of the second port and compacting, the foreign matters on the outer wall surface of the copper pipe are removed by sanding; and the influence of foreign matters on the quality of the casting caused by the foreign matters on the surface of the outer wall of the copper pipe is prevented.
As an embodiment of the present invention, the molding sand is a mixture of resin, a curing agent, and loose sand; adopt the molding sand can the shutoff copper pipe mouth of pipe avoids loose sand in the copper pipe flows out.
As an embodiment of the invention, after the step of assembling the copper pipe according to the core assembly sequence of the sand core of the casting, a casting cavity is poured, and after cooling and unpacking, loose sand and molding sand in the copper pipe are removed by cleaning.
By adopting the method for preventing the copper pipe from being melted through, the coating layer is added on the inner wall of the copper pipe, and loose sand and molding sand are filled in the copper pipe, so that the copper pipe is prevented from being melted through during casting, the oil hole of the casting is prevented from being blocked to become waste, and the coating, the loose sand and the molding sand are common casting auxiliary materials, so that the cost can be obviously reduced, the operation steps are simplified, and the quality of the casting is improved.
Drawings
FIG. 1 is a schematic view of a cast-in copper tube;
FIG. 2 is a schematic view showing the structure of the copper tube in the embodiment in which a coating layer is added to the inner wall of the copper tube and the inside is filled with loose sand and molding sand.
10-casting; 20-copper tube; 21-a first port; 22-a second port; 30-coating; 40-loose sand; 50-molding sand.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The present embodiment provides a method for preventing a copper tube from being melted through, referring to fig. 1 and 2, the method for preventing a copper tube from being melted through includes the following steps:
s01, performing surface treatment on the inner wall of the copper tube 20: and pouring the coating 30 into the inner wall of the copper pipe to enable the coating to completely cover the inner wall of the copper pipe 20, preferably selecting the alcohol coating as the coating 30, then igniting the alcohol coating, and after the surface of the alcohol coating is dried, polishing by using abrasive paper to remove the redundant coating on the surface of the outer wall of the copper pipe, so that the influence on the embedded casting operation is avoided, and the quality of a casting is further influenced.
It should be noted that if the coating 30 is a water-based coating, a drying step is required, and the wall of the copper pipe is small and difficult to dry, which is time-consuming and labor-consuming. Therefore, the coating 30 is preferably alcohol coating, and the coating attached to the inner wall can be dried by igniting the alcohol coating, so that the operation is convenient, and the time and the labor are saved; and the alcohol coating is selected as a coating with higher refractoriness, the coating 30 is uniformly poured into the inner wall of the copper pipe and completely covers the inner wall, the alcohol coating is ignited, and the surface of the coating 30 is dried, so that the copper pipe 20 can be prevented from being partially melted through in the pouring process of the casting 10, and molten iron is prevented from contacting with an internal sand core to form sand-in-iron to block the copper pipe 20.
S02, filling the inside of the copper tube 20: the copper pipe 20 includes a first port 21 and a second port 22, and first, the first port 21 is blocked; then, the second port 22 is filled with the loose sand 40, the loose sand 40 is stopped being filled when the loose sand 40 is filled to a set distance from the second port 22, and the molding sand 50 is filled and compacted at a position of the set distance of the second port 22; finally, the first port 21 is opened, the loose sand 40 is discharged at a predetermined interval from the first port 21, and the molding sand 50 is filled and compacted at a predetermined interval of the second port 22.
Specifically, the set distance range from the first port 21 to the second port 22 is 10mm to 15 mm; by adopting the range, the usage amount of the molding sand 50 can be saved while the copper pipe port can be effectively sealed.
It should be noted that, the middle part inside the copper tube 20 is filled with the loose sand 40, and the loose sand 40 has better fluidity, so that the loose sand can reach the deep part of the copper tube 20, and the inside of the copper tube 20 is conveniently filled. The molding sand 40 is a mixture of resin, a curing agent and loose sand; the molding sand 40 can be used for sealing the opening of the copper tube 20, so as to prevent the loose sand 40 in the copper tube 20 from flowing out. Inside loose sand 40 and the molding sand 50 of filling of copper pipe 20 mainly plug up copper pipe 20 after the copper pipe 20 melts through in order to prevent when pouring, adopt loose sand 40 and molding sand 50 to occupy the copper pipe 20 inner space, the molten iron can't get into the inner space who occupies copper pipe 20 promptly, treat that the casting is unpacked the molding sand 50 of copper pipe 20 can break up naturally, adopt the tuber pipe to blow the clearance go out the sand can, can keep copper pipe 20 unobstructed like this.
S03, removing foreign matters on the outer wall surface of the copper pipe 20 by using sand paper; the foreign matters on the outer wall surface of the copper pipe 20 are prevented from affecting the casting quality.
And S04, assembling the copper pipe 20 according to the core assembly sequence of the sand core of the casting 10.
And S05, casting the casting mold cavity, cooling and unpacking, and cleaning and removing the loose sand 40 and the molding sand 50 in the copper pipe 20.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method for preventing copper pipes from being melted through is characterized by comprising the following steps:
pouring a coating into the inner wall of the copper pipe to enable the coating to completely cover the inner wall of the copper pipe;
drying the coating;
the copper pipe comprises a first port and a second port, and the first port is blocked;
filling loose sand from the second port, stopping filling the loose sand when the loose sand is filled to a set distance from the second port, and filling molding sand at the set distance of the second port and compacting the molding sand;
and dredging the first port, flowing loose sand away from the first port at a set interval, and filling molding sand at the second port at a set interval and compacting the molding sand.
2. A method of preventing copper tubing from melting through as claimed in claim 1 wherein said coating is an alcohol coating.
3. A method for preventing copper tubes from being melted through as claimed in claim 2, wherein said step of drying said paint is to ignite said alcohol paint and to wait for the paint to dry.
4. A method of preventing copper tubing from melting through as in claim 1 wherein said set distance is in the range of 10mm to 15 mm.
5. A method of preventing copper tubing from melting through as claimed in claim 1 wherein after said step of "drying said coating", said coating is removed from the surface of said outer wall of said copper tubing by sanding after said coating is dried.
6. A method for preventing copper pipes from being melted through according to claim 1, wherein after the step of dredging the first port, flowing loose sand at a predetermined distance from the first port, filling and compacting sand at a predetermined distance from the second port, the copper pipe outer wall surface is sanded to remove foreign matters.
7. A method of preventing copper tubing from melting through as claimed in claim 1 wherein said sand is a mixture of resin, curing agent and loose sand.
8. The method for preventing the copper pipe from being melted through according to claim 1, wherein after the step of assembling the copper pipe according to the core assembly sequence of the sand core of the casting, a casting cavity is poured, and after the casting cavity is cooled and opened, loose sand and molding sand in the copper pipe are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110587807.XA CN113414354A (en) | 2021-05-28 | 2021-05-28 | Method for preventing copper pipe from being melted through |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110587807.XA CN113414354A (en) | 2021-05-28 | 2021-05-28 | Method for preventing copper pipe from being melted through |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113414354A true CN113414354A (en) | 2021-09-21 |
Family
ID=77713147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110587807.XA Pending CN113414354A (en) | 2021-05-28 | 2021-05-28 | Method for preventing copper pipe from being melted through |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113414354A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290873A (en) * | 2002-04-08 | 2003-10-14 | Kao Corp | Lost pattern casting method |
| CN1544185A (en) * | 2003-11-12 | 2004-11-10 | 阮新伟 | Pipe burying copper cooling piece manufacturing method |
| CN101020225A (en) * | 2006-12-20 | 2007-08-22 | 天水星火机床有限责任公司 | Tube imbedding casting process to form bent cast hole |
| JP2010131612A (en) * | 2008-12-03 | 2010-06-17 | Ryobi Ltd | Pipe casting method |
| CN102009158A (en) * | 2010-12-17 | 2011-04-13 | 四川海科机械制造有限公司 | Method for preventing cast-in steel pipe from being burnt and sintered |
| CN102266934A (en) * | 2011-07-06 | 2011-12-07 | 机械科学研究总院先进制造技术研究中心 | Method for manufacturing preburied pipeline type mould |
| CN102393144A (en) * | 2011-10-18 | 2012-03-28 | 绍兴曙光机械有限公司 | Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof |
| CN103008615A (en) * | 2012-12-06 | 2013-04-03 | 嘉应学院 | Manufacturing method of alloy steel cast-in zirconium corundum ceramic composite material |
| CN104117632A (en) * | 2014-07-07 | 2014-10-29 | 宁夏共享装备有限公司 | Casting technology for prevention of sand bonding of construction hole position during full mold process |
| CN104308121A (en) * | 2014-10-29 | 2015-01-28 | 刘响 | Method for preparing filler used for preventing high-temperature molten steel breakdown during pouring |
| CN204657414U (en) * | 2015-05-04 | 2015-09-23 | 黄石新兴管业有限公司 | A kind of resin sand foundry goods pore-forming plug |
| CN207103753U (en) * | 2017-08-23 | 2018-03-16 | 西峡县众德汽车部件有限公司 | For casting the closure support meanss of blast pipe |
| CN110640091A (en) * | 2019-10-25 | 2020-01-03 | 山东钢铁股份有限公司 | Steel structure sand core, steel structure sand core manufacturing method and bolt hole casting method |
| CN112174680A (en) * | 2020-09-14 | 2021-01-05 | 华中科技大学 | Anti-fusion-through filler, preparation method, application and removal method thereof |
-
2021
- 2021-05-28 CN CN202110587807.XA patent/CN113414354A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290873A (en) * | 2002-04-08 | 2003-10-14 | Kao Corp | Lost pattern casting method |
| CN1544185A (en) * | 2003-11-12 | 2004-11-10 | 阮新伟 | Pipe burying copper cooling piece manufacturing method |
| CN101020225A (en) * | 2006-12-20 | 2007-08-22 | 天水星火机床有限责任公司 | Tube imbedding casting process to form bent cast hole |
| JP2010131612A (en) * | 2008-12-03 | 2010-06-17 | Ryobi Ltd | Pipe casting method |
| CN102009158A (en) * | 2010-12-17 | 2011-04-13 | 四川海科机械制造有限公司 | Method for preventing cast-in steel pipe from being burnt and sintered |
| CN102266934A (en) * | 2011-07-06 | 2011-12-07 | 机械科学研究总院先进制造技术研究中心 | Method for manufacturing preburied pipeline type mould |
| CN102393144A (en) * | 2011-10-18 | 2012-03-28 | 绍兴曙光机械有限公司 | Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof |
| CN103008615A (en) * | 2012-12-06 | 2013-04-03 | 嘉应学院 | Manufacturing method of alloy steel cast-in zirconium corundum ceramic composite material |
| CN104117632A (en) * | 2014-07-07 | 2014-10-29 | 宁夏共享装备有限公司 | Casting technology for prevention of sand bonding of construction hole position during full mold process |
| CN104308121A (en) * | 2014-10-29 | 2015-01-28 | 刘响 | Method for preparing filler used for preventing high-temperature molten steel breakdown during pouring |
| CN204657414U (en) * | 2015-05-04 | 2015-09-23 | 黄石新兴管业有限公司 | A kind of resin sand foundry goods pore-forming plug |
| CN207103753U (en) * | 2017-08-23 | 2018-03-16 | 西峡县众德汽车部件有限公司 | For casting the closure support meanss of blast pipe |
| CN110640091A (en) * | 2019-10-25 | 2020-01-03 | 山东钢铁股份有限公司 | Steel structure sand core, steel structure sand core manufacturing method and bolt hole casting method |
| CN112174680A (en) * | 2020-09-14 | 2021-01-05 | 华中科技大学 | Anti-fusion-through filler, preparation method, application and removal method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 姚伟明: "多长孔排汁道的埋管铸造", 《铸造技术》 * |
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Application publication date: 20210921 |