CN105441968A - Cleaning and rust preventing method and device of die casting inner tube insert - Google Patents
Cleaning and rust preventing method and device of die casting inner tube insert Download PDFInfo
- Publication number
- CN105441968A CN105441968A CN201510966997.0A CN201510966997A CN105441968A CN 105441968 A CN105441968 A CN 105441968A CN 201510966997 A CN201510966997 A CN 201510966997A CN 105441968 A CN105441968 A CN 105441968A
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- Prior art keywords
- cleaning
- rust
- die casting
- tubing inserts
- oil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
- B05C7/02—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material being projected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a cleaning and rust preventing method and a corresponding device of a die casting inner tube insert, which aim to solve the problems of cleaning and preventing rust on the die casting inner tube insert. The method comprises the steps of blowing with air, cleaning with a cleaning agent (aviation kerosene) and spraying rust preventing oil. The device comprises an air blowing system, a cleaning and rust removing system, a coating and rust preventing system, a control system and a filter and return system, and after parameters are set, the functions of blowing, cleaning, spraying, recycling oil and collecting impurities can be automatically completed in sequence. According to the method and the device, the cleaning and rust preventing functional requirements of various die casting inner tube inserts can be satisfied, the appropriate cleaning agent (aviation kerosene) and rust preventing oil are adopted, and the problem that the rust in an inner cavity of the die casting inner tube insert cannot be removed or prevented by routine cleaning is solved. In addition, the cleaning and rust preventing method and the corresponding device have the advantages of small size, simple structure, low equipment manufacturing cost, high reliability, energy and resource conservation and are good.
Description
Technical field
The invention belongs to casting technology field, relate in particular to the cleaning of tubing inserts in a kind of die casting, rust-proofing method and device.
Background technology
Developing rapidly of automotive industry, has higher requirement to the Design and manufacture of part, the trend that height is integrated, high-performance, low cost are future development.Withstand voltage based on product, heat-resisting, wear-resisting requirement, is bumped into iron in aluminum alloy die casting or steel part has very large effect for the use properties promoting aluminium alloy, as inlayed Cast iron liner in cylinder body, improves heat-resisting, wear resistance; Thermostat, oil pan can be bumped into steel pipe and improve withstand voltage properties etc.For the withstand voltage properties of oil duct in aluminium diecast alloy product, usual detecting pressure is about 400KPa, but in order to improve the performance of product further, oil duct detecting pressure is increased to 620Kpa, this internal soundness to product requires very high, and the extrusion process of existing aluminium alloy and quality cannot ensure.Therefore, one of method of solution is the withstand voltage properties and the sealing property that adopt placing steel tubes inserts method in die casting to ensure high-pressure oil duct, but brings again the cleaning of steel pipe inserts and antirust problem.Although use stainless steel inserts can remove these worries from, consideration and its mach difficulty of cost do not allow again to carry out such selection.Although adopt electro-plating method can be antirust, reduce the wettability of steel pipe and aluminium liquid, after part forming, between aluminium and steel pipe in conjunction with bad, thus have influence on the use of foundry goods.
If only carry out electroplating processes to steel tube surface; again because the shape restriction of steel pipe is difficult to realize, therefore can only be antirust by coating slushing oil, but before die casting, steel pipe needs baking preheating, press casting procedure high temperature makes slushing oil lose; steel pipe inner chamber loses protection, gets rusty easily.In addition after Product processing, product surface can remain cutting fluid, aluminium bits and other impurity, have a strong impact on product using function, and product has degree of cleaning requirement, as die casting product residue thing weight≤7mg, high-pressure oil duct residue weight≤3mg, needs the degree of cleaning carrying out cleaning to ensure product and high-pressure oil duct.
Because the slushing oil of steel pipe inserts surface of internal cavity loses in press casting procedure, product gets rusty very soon in operation turnover, no matter and employing spray-type cleans or ultrasonic cleaning all can only clean up product external surfaces position, and steel pipe inner chamber rusty stain can not clean removal, and due to contact water, exacerbate in pipe further and get rusty.Therefore be necessary to develop a kind of new cleaning, rust cleaning, antirust method and apparatus, to improve cleaning, rust cleaning, antirust quality and efficiency.
Summary of the invention
The object of the invention is the rusty stain cleaning in order to solve tubing inserts in die casting and antirust problem, a kind of low cost, energy-conserving and environment-protective, cleaning and favorable rust preventing effect, structure is simple, with high content of technology, suitability is strong cleaning, rust-proofing method and device are provided.
The method that the present invention proposes comprises the steps:
(1) fixing die casting, in die casting, the import and export of tubing inserts installs sealing connection respectively;
(2) primer fluid press pump, pumps in described interior tubing inserts, the rusty stain of flush pipe internal surface by clean-out system high-voltage high-speed;
(3) start air compressor, from one end of interior tubing inserts, pump into pressurized air, tubing inserts clean-out system and impurity in blowout;
(4) primer fluid press pump, pumps into slushing oil high-voltage high-speed in interior tubing inserts, makes slushing oil be sprayed on pipe internal surface;
(5) repeating step (3) again, blows off unnecessary slushing oil;
(6) take out die casting, complete cleaning and antirust treatment.
Further, in described cleaning, rust-proofing method, clean-out system used is aviation kerosene.
Further, in described cleaning, rust-proofing method, the sealing connection place of interior tubing inserts outlet, has additional sanitising agent and slushing oil retrieving arrangement.
Further, in described cleaning, rust-proofing method, scavenging period is set as 20-30 second or until clean up in step (2); In step (4), spray time is set as 10-30 second or until reaches spraying requirement.
Based on aforesaid method, the present invention proposes cleaning, the Rustproofing apparatus of tubing inserts in a kind of die casting, it is characterized in that, comprises air and blows off system 1, cleaning rust cleaning system 2, coating rust prevention system 3, Controlling System 4, filters return oil system 5, wherein:
Described air blows off system 1 and comprises the air compressor 10, the 3rd stopping valve 11 and the 3rd check valve 12 that are serially connected with same pipeline, for blowing down residual liquid and impurity in interior tubing inserts;
Described cleaning rust cleaning system 2 comprises the first hydro-pump 14, first fuel tank 13, first stopping valve 15 and the first check valve 16 being serially connected with same pipeline, pumps into clean-out system for inside tubing inserts, reaches cleaning and rust cleaning object;
Described coating rust prevention system 3 comprises the second hydro-pump 18, second fuel tank 17, second stopping valve 19 and the second check valve 20 being serially connected with same pipeline, for spray anti-rust oil in inside tubing inserts;
Described filtration return oil system 5 comprises reversing valve 21 and exports the second strainer 23, first strainer 24 and the save oil pan 22 be connected; Second strainer 23 is for the impurity in filtering slushing oil, and the first strainer 24 is for the impurity in filtering sanitising agent, and save oil pan 22 is for reclaiming impurity and the Residual oil of blowout; The outlet of the second strainer 23 connects the second fuel tank 17, for realizing the recycle of sanitising agent; The outlet of the first strainer 24 connects the first fuel tank 13, for realizing the recycle of slushing oil;
Described air blow off system 1, cleaning rust cleaning system 2, coating rust prevention system 3 fluid outlet tandem become a road, guarantee that fluid only sprays to its exterior by the check valve of each system; The other end of institute's die casting 6 opening is connected with the sealing of filtration return oil system 5;
Described Controlling System 4 comprises programmable controller PLC and human-computer interaction interface, blow off system 1, cleaning rust cleaning system 2, coating rust prevention system 3 and filter return oil system 5 work for controlling air, and setting relevant operating parameter, described working parameter comprises aviation kerosene, slushing oil, compressed-air actuated pressure, flow velocity and cleaning spray time;
During work, air blow off system 1, cleaning rust cleaning system 2, coating rust prevention system 3 fluid outlet be connected with the sealing of interior tubing inserts 7 one end, the other end of interior tubing inserts 7 is connected with the inlet seal of filtration return oil system 5; By Controlling System, parameter such as setting clean-out system, slushing oil, compressed-air actuated pressure, flow velocity and cleaning spray time etc., starts and completes the cleaning of tubing inserts in die casting, antirust.
Further, the cleaning of tubing inserts in described die casting, Rustproofing apparatus, Controlling System starts one by one in the following order and closes down: cleaning rust cleaning system 2 (the second strainer connected by reversing valve), air blow off system 1 (reversing valve connection oil trap), coating rust prevention system 3 (the first strainer connected by reversing valve) and air and blow off system (reversing valve connection oil trap), complete cleaning and the spraying of die casting 6.
Further, the cleaning of tubing inserts in described die casting, Rustproofing apparatus, rust cleaning system 2 scavenging period is set as 20-30 second or until clean up; Coating rust prevention system 3 spray time is set as 10-30 second or until reaches spraying requirement.
Further, the cleaning of tubing inserts in described die casting, Rustproofing apparatus, clean-out system used is aviation kerosene.
The present invention adopts clean-out system or Medium Oil to replace water and cleans tubing inserts in die casting, and the iron rust of removing inserts internal surface, then blows off pipe internal surface with pressurized air; Then again to coating slushing oil in pipe, blow away unnecessary slushing oil with pressurized air subsequently, so just evenly apply last layer Rust Preventing Oil Film at the internal surface of pipe, in die casting, the rusty stain of tubing inserts cleans and antirustly meets specification of quality completely.Present invention employs resource recycling technology, recovery and rinsing agent and slushing oil recycle, and can not cause secondary pollution.
The features and advantages of the invention:
1. feature of the present invention is that cleaning rust-proof is effective, cost is low, and volume is little, applied widely.By adopting the clean-out system (comprising aviation kerosene) being applicable to interior tubing inserts material, while cleaning, avoiding the risk that pipe gets rusty further, and effectively being eliminated rust in the position of having got rusty; By adopting the slushing oil being applicable to interior tubing inserts material, even spread prevents from getting rusty, pass through design optimization, reduce manufacturing cost, reduction equipment volume, efficiently solve the problem of the cleaning of pipe inserts in die casting, rust cleaning, antirust, environment-friendly function, the cleaning of tubing inserts in various die casting, antirust function requirement can be met.
2., by adopting the clean-out system (comprising aviation kerosene) and slushing oil that are applicable to, efficiently solve the problem that the cleaning of die casting routine can not realize the rust cleaning of interior tubing inserts inner chamber and antirust function.
3. little, the structure of this device volume is simple, device fabrication cost is low, one-touch start and stop can realize automated operation, and reliability is high, save energy, is a kind of good cleaning, rust-proofing method and device.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention;
Fig. 2 is operational flowchart of the present invention;
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1. air blows off system, 2. cleans rust cleaning system, 3. applies rust prevention system, 4. Controlling System, 5. filter return oil system, 6. die casting, tubing inserts, 10. air compressor 7., 11. the 3rd stopping valve, 12. the 3rd check valves, 13. first fuel tanks, 14. first hydro-pumps, 15. first stopping valve, 16. first check valves, 17. second fuel tanks, 18. second hydro-pumps, 19. second stopping valve, 20. second check valves, 21. reversing valves, 22. save oil paies, 23. second strainers, 24. first strainers.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1 and Figure 2, the operating process of apparatus of the present invention:
1. first clamp die casting 6 by pneumatic clamping, in being connected by air cylinder driven sealing connection, the import and export pneumatic clamping of tubing inserts 7, cylinder, sealing connection omit in FIG.
2. clean rust cleaning system 2 to work: the first hydro-pump 14 works, and the first stopping valve 15 is opened, reversing valve 21 commutation is connected to the first strainer 24.First hydro-pump 14, in the aviation kerosene in the first fuel tank 13 is in the first stopping valve 15, first check valve 16 high-voltage high-speed input die casting 6 in tubing inserts 7, by reversing valve 21, through the first strainer 24, flows back in the first fuel tank 13.Because aviation kerosene is in the flow at high speed of tubing, the rusty stain of flush pipe internal surface, reaches the effect of internal tubing inserts cleaning rust cleaning.The wash cycles time is set by Controlling System 4.After cleaning rust cleaning completes, the first hydro-pump 14 quits work, the first stopping valve 15 is closed.
3. air blows off system 1 and works: after cleaning rust cleaning work completes, the 3rd stopping valve 11 is opened, and the commutation of reversing valve 21 is connected to save oil pan 22.The pressurized air that air compressor 10 produces is blown into tubing inserts 7 in die casting 6 by the 3rd stopping valve 11, the 3rd check valve 12, through reversing valve 21, aviation kerosene, various foreign matters etc. residual in interior tubing inserts 7 are blown in save oil pan 22, reach the effect blowing off interior tubing inserts.Working time control system 4 sets.After blowing off oil, foreign matter, the 3rd stopping valve 11 is closed.
4. apply rust prevention system 3 to work: after oil cleaning, blowing off pipe internal surface, the second hydro-pump 18 works, and the second stopping valve 19 is opened, and reversing valve 21 switching is connected to the second strainer 23.Second hydro-pump 18, in the slushing oil in the second fuel tank 17 is in the second stopping valve 19, second check valve 20 high-voltage high-speed input die casting 6 in tubing inserts 7, by reversing valve 21, through the second strainer 23, flows back in the second fuel tank 17.The flowing of slushing oil in pipe, can evenly be coated on pipe internal surface by slushing oil, reach internal tubing inserts internal coat slushing oil and carry out antirust effect.Circulation coating time Controlling System 4 sets.After applying antirust completing, the second hydro-pump 18 quits work, and the second stopping valve 19 is closed.
5. air blows off system 1 and works: after oiling rust-proofer completes, the 3rd stopping valve 11 is opened, and the commutation of reversing valve 21 is connected to save oil pan 22.The pressurized air that air compressor 10 produces is blown into tubing inserts 7 in die casting 6 by the 3rd stopping valve 11, the 3rd check valve 12, through reversing valve 21, unnecessary slushing oil in interior tubing inserts 7 is blown in save oil pan 22, reach the effect blowing off interior tubing inserts.Working hour is set by Controlling System 4.After blowing off slushing oil, the 3rd stopping valve 11 is closed.
6. fixture and sealing connection unclamp automatically, take out die casting.
The present invention can meet cleaning, the antirust function requirement of tubing inserts in various die casting, by adopting applicable clean-out system (aviation kerosene) and slushing oil, efficiently solve the problem that the cleaning of die casting routine can not realize the rust cleaning of interior tubing inserts inner chamber and antirust function.And this device volume is little, structure is simple, device fabrication cost is low, reliability is high, save energy, be a kind of good cleaning, rust-proofing method and device.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the cleaning of tubing inserts in die casting, a rust-proofing method, is characterized in that, comprise the steps:
(1) fixing die casting, in die casting, the import and export of tubing inserts installs sealing connection respectively;
(2) primer fluid press pump, pumps in described interior tubing inserts, the rusty stain of flush pipe internal surface by clean-out system high-voltage high-speed;
(3) start air compressor, from one end of interior tubing inserts, pump into pressurized air, tubing inserts clean-out system and impurity in blowout;
(4) primer fluid press pump, pumps into slushing oil high-voltage high-speed in interior tubing inserts, makes slushing oil be sprayed on pipe internal surface;
(5) repeating step (3) again, blows off unnecessary slushing oil;
(6) take out die casting, complete cleaning and antirust treatment.
2. the cleaning of tubing inserts in die casting according to claim 1, rust-proofing method, it is characterized in that, clean-out system used is aviation kerosene.
3. the cleaning of tubing inserts in die casting according to claim 1, rust-proofing method, is characterized in that, at the sealing connection place of interior tubing inserts outlet, has additional sanitising agent and slushing oil retrieving arrangement.
4. the cleaning of tubing inserts in the die casting according to claim 1 or 3, rust-proofing method, is characterized in that, in step (2), scavenging period is set as 20-30 second or until clean up; In step (4), spray time is set as 10-30 second or until reaches spraying requirement.
5. the cleaning of tubing inserts in a die casting, Rustproofing apparatus, it is characterized in that, comprise air to blow off system (1), cleaning rust cleaning system (2), coating rust prevention system (3), Controlling System (4), filter return oil system (5), wherein:
Described air blows off system (1) and comprises the air compressor (10), the 3rd stopping valve (11) and the 3rd check valve (12) that are serially connected with same pipeline, for blowing down residual liquid and impurity in interior tubing inserts;
Described cleaning rust cleaning system (2) comprises the first hydro-pump (14), the first fuel tank (13), the first stopping valve (15) and the first check valve (16) that are serially connected with same pipeline, pump into clean-out system for inside tubing inserts, reach cleaning and rust cleaning object;
Described coating rust prevention system (3) comprises the second hydro-pump (18), the second fuel tank (17), the second stopping valve (19) and the second check valve (20) that are serially connected with same pipeline, for spray anti-rust oil in inside tubing inserts;
Described filtration return oil system (5) comprises reversing valve (21) and exports the second strainer (23) and the first strainer (24) that are connected; Second strainer (23) is for the impurity in filtering slushing oil; First strainer (24) is for the impurity in filtering sanitising agent; The outlet of the second strainer (23) connects the second fuel tank (17), for realizing the recycle of sanitising agent; The outlet of the first strainer (24) connects the first fuel tank (13), for realizing the recycle of slushing oil;
Described air blow off system (1), cleaning rust cleaning system (2), coating rust prevention system (3) fluid outlet tandem become a road, guarantee that fluid only sprays to its exterior by the check valve of each system; The other end of institute's die casting (6) opening is connected with filtration return oil system (5) sealing;
Described Controlling System (4) comprises programmable controller PLC and human-computer interaction interface, blow off system (1), cleaning rust cleaning system (2), coating rust prevention system (3) for controlling air and filter return oil system (5) work, and setting relevant operating parameter, described working parameter comprises clean-out system, slushing oil, compressed-air actuated pressure, flow velocity and cleaning spray time;
During work, air blow off system (1), cleaning rust cleaning system (2), coating rust prevention system (3) fluid outlet be connected with the sealing of interior tubing inserts (7) one end, the other end of interior tubing inserts (7) is connected with the inlet seal of filtration return oil system (5); By Controlling System, setting working parameter, starts and completes the cleaning of tubing inserts in die casting, antirust.
6. the cleaning of tubing inserts in die casting according to claim 5, Rustproofing apparatus, it is characterized in that, Controlling System starts one by one in the following order and closes down: cleaning rust cleaning system (2), air blow off system (1), coating rust prevention system (3) and air and blow off system, complete cleaning and the spraying of die casting (6).
7. the cleaning of tubing inserts in die casting according to claim 5, Rustproofing apparatus, is characterized in that, rust cleaning system (2) scavenging period is set as 20-30 second or until clean up; Coating rust prevention system (3) people's spray time is set as 10-30 second or until reaches spraying requirement.
8. the cleaning of tubing inserts in die casting according to claim 5, Rustproofing apparatus, it is characterized in that, clean-out system used is aviation kerosene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966997.0A CN105441968A (en) | 2015-12-18 | 2015-12-18 | Cleaning and rust preventing method and device of die casting inner tube insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966997.0A CN105441968A (en) | 2015-12-18 | 2015-12-18 | Cleaning and rust preventing method and device of die casting inner tube insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105441968A true CN105441968A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510966997.0A Pending CN105441968A (en) | 2015-12-18 | 2015-12-18 | Cleaning and rust preventing method and device of die casting inner tube insert |
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| CN (1) | CN105441968A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105798024A (en) * | 2016-05-11 | 2016-07-27 | 广西玉柴机器配件制造有限公司 | Normal temperature cleaning method for pulse water-cooling exhaust pipe of heavy diesel engine |
| CN107858695A (en) * | 2017-12-20 | 2018-03-30 | 泰安航天特种车有限公司 | Inner-walls of duct acid wash passivation device |
| CN113604810A (en) * | 2021-09-07 | 2021-11-05 | 鹰普机械（宜兴）有限公司 | Sand casting cleaning method |
| CN114515714A (en) * | 2022-01-25 | 2022-05-20 | 河南柴油机重工有限责任公司 | Shaft part with special-shaped cavity and rust removal method for inner surface of shaft part |
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| CN205258615U (en) * | 2015-12-18 | 2016-05-25 | 广东鸿图南通压铸有限公司 | Washing, anti -rust device of die casting inner tube class inserts |
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| CN1810390A (en) * | 2005-09-12 | 2006-08-02 | 王开平 | Method of cleaning pipeline of lubricating oil, hydraulic oil and fuel oil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798024A (en) * | 2016-05-11 | 2016-07-27 | 广西玉柴机器配件制造有限公司 | Normal temperature cleaning method for pulse water-cooling exhaust pipe of heavy diesel engine |
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| CN107858695A (en) * | 2017-12-20 | 2018-03-30 | 泰安航天特种车有限公司 | Inner-walls of duct acid wash passivation device |
| CN113604810A (en) * | 2021-09-07 | 2021-11-05 | 鹰普机械（宜兴）有限公司 | Sand casting cleaning method |
| CN114515714A (en) * | 2022-01-25 | 2022-05-20 | 河南柴油机重工有限责任公司 | Shaft part with special-shaped cavity and rust removal method for inner surface of shaft part |
| CN114515714B (en) * | 2022-01-25 | 2024-03-26 | 河南柴油机重工有限责任公司 | Shaft part with special-shaped cavity and rust removal method for inner surface of shaft part |
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Application publication date: 20160330 |