CN209753266U - Engine cast cylinder body repair system - Google Patents
Engine cast cylinder body repair system Download PDFInfo
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- CN209753266U CN209753266U CN201822038090.XU CN201822038090U CN209753266U CN 209753266 U CN209753266 U CN 209753266U CN 201822038090 U CN201822038090 U CN 201822038090U CN 209753266 U CN209753266 U CN 209753266U
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- cylinder body
- tank
- engine
- cover
- heat
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Abstract
The utility model relates to an engine casting cylinder body repair system, including the open heat preservation in top, the cover that sets up at the heat preservation tank top, be located the outside vacuum pump of heat preservation tank, first pneumatic valve, be provided with first sealing washer between cover and the heat preservation tank top, the first pneumatic cylinder that is used for going up and down the cover is installed to the top of cover, the inside of heat preservation tank is provided with the lower closing cap that is located the combustion chamber below, the second pneumatic cylinder that is used for going up and down the closing cap, be located the last closing cap of combustion chamber top, the third pneumatic cylinder that is used for going up and down the closing cap, be provided with the second sealing washer down between closing cap and the engine casting cylinder body, it casts the third sealing washer to go up to be provided with between the cylinder body with the engine sealing cap, the outside of. The engine cast cylinder body repairing system can repair an air-leaking engine cast cylinder body, the repairing qualification rate is high, the repairing quality is good, the repaired engine cast cylinder body cannot lose effectiveness in advance, and the implementation effect is good.
Description
Technical Field
The utility model relates to an engine casting cylinder body repair system belongs to engine casting technical field.
Background
The engine cast cylinder body is usually manufactured by a die casting process, and the die casting process is characterized in that high pressure is applied to molten metal by utilizing an inner cavity of a die. The die casting process is particularly suitable for manufacturing a large number of small and medium-sized castings, so the die casting is the most widely used one in various casting processes. Compared with other casting technologies, the die-cast surface is smoother and has higher size consistency.
However, the cast engine block manufactured by the pressing process is generally provided with a large number of air holes, and if the positions of the air holes are positioned near the combustion chamber in the cast engine block, air leakage of the combustion chamber is easily caused. The engine cast cylinder body with air leakage is usually repaired by anaerobic adhesive at present, and if air leakage still occurs after repair, the engine cast cylinder body is judged to be a waste product. At present, an engine cylinder block is usually immersed into anaerobic adhesive and then is subjected to pressure infiltration so as to fill the anaerobic adhesive into air leakage holes, but the air leakage holes are small in structure, and if bubbles in the air leakage holes are not discharged completely, the solidified anaerobic adhesive also has bubbles, so that the repair by adopting the anaerobic adhesive fails, and the improvement of the repair qualified rate is limited; at present, the qualification rate of adopting anaerobic adhesive for repairing is not more than 81 percent.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine casts cylinder body repair system to the not enough of prior art existence, concrete technical scheme as follows:
An engine cast cylinder body repairing system is used for repairing air leakage holes existing in an engine cast cylinder body, the engine cast cylinder body comprises a combustion chamber, the air leakage holes are communicated with the combustion chamber, the engine cast cylinder body repairing system comprises a heat preservation tank with an open top, a tank cover arranged at the top of the heat preservation tank, a vacuum pump positioned outside the heat preservation tank and a first air valve, a first sealing ring is arranged between the tank cover and the top of the heat preservation tank, a first hydraulic cylinder used for lifting the tank cover is installed above the tank cover, the air exhaust end of the vacuum pump is communicated with one end of the first air valve, and the other end of the first air valve is communicated with an inner cavity of the heat preservation tank; the engine casting cylinder body is arranged inside the heat preservation tank, a lower sealing cover located below the combustion chamber, a second hydraulic cylinder used for lifting the lower sealing cover, an upper sealing cover located above the combustion chamber and a third hydraulic cylinder used for lifting the upper sealing cover are arranged inside the heat preservation tank, a second sealing ring is arranged between the lower sealing cover and the engine casting cylinder body, a third sealing ring is arranged between the upper sealing cover and the engine casting cylinder body, the upper sealing cover is provided with a through hole communicated with the combustion chamber, and a second air valve communicated with the through hole is arranged outside the upper sealing cover.
As an improvement of the technical scheme, the inner wall of the heat-preserving tank is provided with an electric heating wire.
As an improvement of the technical scheme, a third air valve communicated with the inner cavity of the heat-insulating tank is arranged at the top of the tank cover.
As an improvement of the technical proposal, a pressure vacuum gauge for measuring the air pressure in the heat preservation tank is arranged at the top of the tank cover.
Engine casting cylinder body repair system can restore the engine casting cylinder body of gas leakage, and prosthetic percent of pass is high, and repair quality is good, and engine casting cylinder body after the restoration can not become invalid in advance, implements effectually.
Drawings
FIG. 1 is a schematic structural view of a cast cylinder block repair system for an engine according to the present invention;
FIG. 2 is a schematic structural diagram of the engine cast cylinder body provided with the improved anaerobic adhesive of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the engine cast-cylinder block repairing system is used for repairing air leakage holes existing in an engine cast-cylinder block 10, the engine cast-cylinder block 10 comprises a combustion chamber 11, the air leakage holes are communicated with the combustion chamber 11, the engine cast-cylinder block repairing system comprises an insulation tank 20 with an open top, a tank cover 21 arranged at the top of the insulation tank 20, a vacuum pump 30 positioned outside the insulation tank 20, and a first air valve 31, a first sealing ring 23 is arranged between the tank cover 21 and the top of the insulation tank 20, a first hydraulic cylinder 22 used for lifting the tank cover 21 is arranged above the tank cover 21, the telescopic end of the first hydraulic cylinder 22 is fixedly connected with the tank cover 21, the air exhaust end of the vacuum pump 30 is communicated with one end of the first air valve 31, and the other end of the first air valve 31 is communicated with an inner cavity of the insulation tank; the engine cast cylinder body 10 is arranged in the heat preservation tank 20, a lower sealing cover 50 positioned below the combustion chamber 11, a second hydraulic cylinder 51 used for lifting the lower sealing cover 50, an upper sealing cover 60 positioned above the combustion chamber 11 and a third hydraulic cylinder 61 used for lifting the upper sealing cover 60 are arranged in the heat preservation tank 20, the second hydraulic cylinder 51 is positioned below the lower sealing cover 50, the telescopic end of the second hydraulic cylinder 51 is fixedly connected with the lower sealing cover 50, the lower sealing cover 50 is arranged below the engine cast cylinder body 10, a second sealing ring 52 is arranged between the lower sealing cover 50 and the engine cast cylinder body 10, the third hydraulic cylinder 61 is positioned above the upper sealing cover 60, the telescopic end of the third hydraulic cylinder 61 is fixedly connected with the upper sealing cover 60, the upper sealing cover 60 is arranged above the engine cast cylinder body 10, and a third sealing ring 62 is arranged between the upper sealing cover 60 and the engine cast cylinder body 10, the upper sealing cover 60 is provided with a through hole 601 communicated with the combustion chamber 11, and the outside of the upper sealing cover 60 is provided with a second air valve 63 communicated with the through hole 601. Further, a third air valve 26 communicated with the inner cavity of the heat preservation tank 20 is arranged at the top of the tank cover 21.
The engine cast cylinder body is an aluminum alloy engine cast cylinder body manufactured by a die-casting process. The tank cover 21 is driven by the first hydraulic cylinder 22 to move up and down, thereby completing the operation of opening and closing the tank cover 21. The first seal ring 23 can improve the sealing property between the cover 21 and the top of the heat-retaining tank 20. The upper cover 60 is driven by the third hydraulic cylinder 61 to perform an up-and-down movement, thereby completing the operation of opening and closing the upper cover 60. The third seal ring 62 can improve the sealing property between the engine cast block body 10 and the upper cover 60. The second hydraulic cylinder 51 drives the lower cover 50 to move up and down, thereby completing the operation of opening and closing the lower cover 50. The second seal ring 52 can improve the sealing property between the engine cast block body 10 and the lower cover 50.
The repair process of the air leakage hole in the engine cast cylinder body 10 is as follows: placing the engine cast cylinder body 10 into the interior of the heat preservation tank 20 and being supported by the lower sealing cover 50, sealing the lower end of the combustion chamber 11 by the lower sealing cover 50, and then injecting the modified anaerobic adhesive 70 into the combustion chamber 11 until the liquid level of the modified anaerobic adhesive 70 is flush with the upper end of the combustion chamber 11, as shown in fig. 2; then the upper sealing cover 60 is covered, the second air valve 63 is closed, and the tank cover 21 is covered; starting the vacuum pump 30, opening the first air valve 31 to vacuumize the heat-preserving tank 20 until the air pressure inside the heat-preserving tank 20 is 200-1000 Pa, closing the first air valve 31 and the vacuum pump 30, and keeping the vacuum for 10 min; opening the third air valve 26, recovering the air pressure in the heat-preservation tank 20 to normal pressure, then opening the tank cover 21 and the upper sealing cover 60 in sequence, pumping away the improved anaerobic adhesive 70 in the combustion chamber 11, covering the tank cover 21, and closing the third air valve 26; starting the vacuum pump 30 and opening the first air valve 31 to vacuumize the heat-preserving tank 20 until the air pressure inside the heat-preserving tank 20 is 200-1000 Pa, heating the temperature inside the heat-preserving tank 20 to 60-70 ℃, and preserving the heat for 24 hours; and finally, opening the third air valve 26, recovering the air pressure in the heat-preservation tank 20 to the normal pressure, opening the tank cover 21, taking out the engine cast cylinder body 10, and finishing the repairing operation by curing residual stains on the surface of the engine cast cylinder body 10. When the first vacuum pumping is performed, because the oxygen content in the heat-preserving tank 20 is very low, if the conventional anaerobic adhesive is adopted, the oxygen in the heat-preserving tank 20 is easily cured after being consumed, and once the oxygen is cured, the anaerobic adhesive in the combustion chamber 11 is easily cured, so that the subsequent separation is not easy.
Further, the heating wire 24 is installed on the inner wall of the heat-preserving tank 20. The interior of the thermal insulation tank 20 can be heated by the heating wire 24.
Further, to facilitate measurement of the air pressure inside the thermal insulation tank 20; the top of the can cover 21 is provided with a vacuum gauge 25 for measuring the pressure inside the heat-retaining can 20.
The improved anaerobic adhesive 70 is prepared by mixing polyurethane type anaerobic adhesive, ferrocene, graphene powder with the particle size less than or equal to 100nm, silicon carbide with the particle size less than or equal to 100nm and a solvent according to the mass ratio of 100:7.1:10.6:5.6:50 or 100:7.6:11.1:6.1:70 or 100:7.9:11.5:6.3: 80. Wherein, the solvent is one of benzene, butanone and dichloromethane. The shear strength of the improved anaerobic adhesive 70 after curing exceeds 36 Mpa. The shearing strength of the polyurethane anaerobic adhesive after curing is 30 Mpa. The addition of the graphene powder and the silicon carbide can reduce the thermal expansion coefficient of the improved anaerobic adhesive 70, and the addition of the silicon carbide can improve the linear thermal expansion coefficient of the improved anaerobic adhesive 70. The ferrocene can be dissolved in a solvent and finally dispersed in the polyurethane type anaerobic adhesive. The polyurethane type anaerobic adhesive can be cured at room temperature in an oxygen-free environment; and the ferrocene is added, so that the curing temperature of the improved anaerobic adhesive 70 is raised to 60-70 ℃, and the improved anaerobic adhesive 70 can not be cured quickly even under an anaerobic environment at room temperature.
In the above embodiment, a vacuum pumping manner is adopted, so that a large number of bubbles inside the air leakage hole are discharged, the improved anaerobic adhesive 70 can fill and fill the air leakage hole to the maximum extent, and after the improved anaerobic adhesive 70 is completely cured, air leakage is not easy to occur, so that the repair yield is remarkably improved. The engine cast cylinder body repairing system is adopted to repair the air-leaking engine cast cylinder body 10, and the repairing qualified rate exceeds 93.6%.
Through the modification to current anaerobic adhesive for the shear strength of glue film improves after the solidification, and the coefficient of thermal expansion and the linear thermal expansion coefficient of glue film reduce, thereby can show the coefficient of thermal expansion difference who improves between glue film and the engine cast cylinder body 10, avoid leading to glue film and the pore wall of gas leakage hole to take place to break away from because of expend with heat and contract with cold, thereby lead to taking place secondary gas leakage. The engine cast cylinder body 10 repaired by the engine cast cylinder body repairing system is subjected to an aging experiment, the aging period is three years, and the secondary air leakage rate after the aging experiment is not more than 2.2%. And common anaerobic adhesive, such as polyurethane anaerobic adhesive, is directly filled into the air leakage hole to repair the obtained control cylinder body, the aging period of the control cylinder body is three years, and the air leakage rate after the aging experiment is more than 6.9 percent. That is, the engine cast cylinder block 10 repaired by the engine cast cylinder block repairing system does not fail in advance, and the service life is prolonged.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. An engine cast cylinder body repair system is used for repairing air leakage holes existing in an engine cast cylinder body, the engine cast cylinder body comprises a combustion chamber, and the air leakage holes are communicated with the combustion chamber, and the engine cast cylinder body repair system is characterized in that: the engine cast cylinder body repairing system comprises a heat-insulating tank with an open top, a tank cover arranged on the top of the heat-insulating tank, a vacuum pump positioned outside the heat-insulating tank and a first air valve, wherein a first sealing ring is arranged between the tank cover and the top of the heat-insulating tank, a first hydraulic cylinder used for lifting the tank cover is arranged above the tank cover, the air exhaust end of the vacuum pump is communicated with one end of the first air valve, and the other end of the first air valve is communicated with an inner cavity of the heat-insulating tank; the engine casting cylinder body is arranged inside the heat preservation tank, a lower sealing cover located below the combustion chamber, a second hydraulic cylinder used for lifting the lower sealing cover, an upper sealing cover located above the combustion chamber and a third hydraulic cylinder used for lifting the upper sealing cover are arranged inside the heat preservation tank, a second sealing ring is arranged between the lower sealing cover and the engine casting cylinder body, a third sealing ring is arranged between the upper sealing cover and the engine casting cylinder body, the upper sealing cover is provided with a through hole communicated with the combustion chamber, and a second air valve communicated with the through hole is arranged outside the upper sealing cover.
2. An engine cast block repair system according to claim 1, wherein: and the inner wall of the heat-preserving tank is provided with an electric heating wire.
3. An engine cast block repair system according to claim 1, wherein: and a third air valve communicated with the inner cavity of the heat-insulating tank is arranged at the top of the tank cover.
4. An engine cast block repair system according to claim 1, wherein: and a pressure vacuum meter for measuring the air pressure in the heat-insulating tank is arranged at the top of the tank cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822038090.XU CN209753266U (en) | 2018-12-04 | 2018-12-04 | Engine cast cylinder body repair system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822038090.XU CN209753266U (en) | 2018-12-04 | 2018-12-04 | Engine cast cylinder body repair system |
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| Publication Number | Publication Date |
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| CN209753266U true CN209753266U (en) | 2019-12-10 |
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| CN201822038090.XU Active CN209753266U (en) | 2018-12-04 | 2018-12-04 | Engine cast cylinder body repair system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530151A (en) * | 2018-12-04 | 2019-03-29 | 合肥江淮铸造有限责任公司 | A kind of engine casting cylinder body repair system |
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2018
- 2018-12-04 CN CN201822038090.XU patent/CN209753266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530151A (en) * | 2018-12-04 | 2019-03-29 | 合肥江淮铸造有限责任公司 | A kind of engine casting cylinder body repair system |
| CN109530151B (en) * | 2018-12-04 | 2024-04-19 | 合肥江淮铸造有限责任公司 | Repairing system for cast cylinder body of engine |
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