CN110076698B - Pipeline inner wall grinding process for aluminum alloy casting with oil way - Google Patents
Pipeline inner wall grinding process for aluminum alloy casting with oil way Download PDFInfo
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- CN110076698B CN110076698B CN201910410653.XA CN201910410653A CN110076698B CN 110076698 B CN110076698 B CN 110076698B CN 201910410653 A CN201910410653 A CN 201910410653A CN 110076698 B CN110076698 B CN 110076698B
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- grinding
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- endoscope
- punching
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- 238000000227 grinding Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005266 casting Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 22
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 24
- 238000004080 punching Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000009991 scouring Methods 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 7
- 241000219991 Lythraceae Species 0.000 claims description 4
- 235000014360 Punica granatum Nutrition 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/083—Deburring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
- B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
- B24C7/0023—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier of feed pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a process for grinding the inner wall of a pipeline with an oil-way aluminum alloy casting, which adopts an endoscope to perform single-point recording on burrs, fleshiness and attachments in the pipeline; the orientation of the directional flushing end is adjusted by passing the endoscope through the hose; carrying out intermittent impact on the fixed point; circularly finishing the punching and grinding of all single points; and selecting a water sand grinding material with the diameter smaller than 1mm to carry out final scouring on the pipeline. The invention adopts the water sand grinding material to carry out scouring, the surface of the oil line pipe wall is smooth, the quality of the inner wall of the pipeline is greatly improved, the passing property of gas or liquid of the pipeline is favorably improved, the product percent of pass is greatly improved, and the rejection rate is reduced. Burrs, fleshiness and attachments are independently punched and ground, the intermittent directional impact is reliable, the surface of the oil line pipe wall is not damaged, and the final integral punching and grinding is combined, so that the oil line pipe wall is smoother, and the process flow is scientific and reasonable. The process flow is simple, the punching and grinding operation is convenient, the requirement on the skill and proficiency of operators is low, and the operation is easy.
Description
Technical Field
The invention relates to a grinding process for an inner wall of a pipeline of an aluminum alloy casting with an oil way, and belongs to the technical field of cleaning of internal pipelines of aluminum alloy castings.
Background
Along with the development of the industry, higher and higher requirements are put on the quality and the precision of cast products, and the designed casting structure is more and more complex. For castings containing a large number of complex internal pipelines, cleaning of the inner walls of the pipelines of the parts after forming is always a technical problem. No matter the casting is sand casting or investment casting, after the casting is finished, the inner wall of the pipeline has the defects of core residue, sand sticking, burrs and the like. In some cases, welding of the pipe walls may also cause bulging or burrs on the inner walls of the pipes. In order to overcome the defects, the defects need to be cleaned.
The method mainly comprises the steps of cleaning the inner wall of a pipeline by using tools such as a flexible milling cutter and the like, but for parts with complex bent internal pipeline structures, the milling cutter at a plurality of positions cannot reach the parts, all the positions are difficult to clean, and the defects which cannot be cleaned cause partial casting scrapping.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a pipeline inner wall grinding process for aluminum alloy castings with oil passages, aiming at the problem that castings are easily scrapped when the pipe walls are ground by tools such as a traditional flexible milling cutter and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the grinding process for the inner wall of the pipeline with the oil way aluminum alloy casting comprises the following steps:
s1 endoscope is positioned at the inner part of the endoscope,
carrying out single-point recording on burrs, fleshiness and attachments in the pipeline by using an endoscope, wherein the single-point recording comprises position information and size data;
s2 adjusting the fixed point punching and grinding position,
implanting a hose according to the fixed-point position, wherein the free end of the hose is a directional flushing end, adjusting the direction of the directional flushing end aiming at the single point by passing the hose through an endoscope, and withdrawing the endoscope;
s3 performing fixed-point punching and grinding operation,
selecting water sand grinding materials according to the size data recorded by the current single point, and setting the intermittent impact frequency and the instantaneous impact water pressure of water sand supply equipment;
the operation of the S4 cycle is repeated,
repeating the step S2 to the step S3, and circularly finishing the punching and grinding of all the single points;
s5, carrying out the final grinding operation,
and selecting a water sand grinding material with the diameter smaller than 1mm to perform scouring on the pipeline, wherein the scouring flow speed is 1-2 m/s, and the scouring time is 2-3 min.
Preferably, in step S1, the burr, fleshiness and attachment with the size of the inner convex of the pipeline exceeding 2mm are recorded in a single point.
Preferably, in the step S3, the diameter of the water sand abrasive is 1/4-1/2 of single-point convex size, the instantaneous impact water pressure is 0.1-0.3 MPa, the intermittent impact frequency is 20-30 times per minute, and the duration is 3-5 minutes.
Preferably, in step S5, 0.5mm of pomegranate sand is selected as the water sand abrasive.
The invention has the following beneficial effects:
1. the water sand grinding material is adopted for scouring, the surface of the wall of the oil line is smooth, the quality of the inner wall of the pipeline is greatly improved, the gas or liquid permeability of the pipeline is favorably improved, the product percent of pass is greatly improved, and the rejection rate is reduced.
2. Burrs, fleshiness and attachments are independently punched and ground, the intermittent directional impact is reliable, the surface of the oil line pipe wall is not damaged, and the final integral punching and grinding is combined, so that the oil line pipe wall is smoother, and the process flow is scientific and reasonable.
3. The process flow is simple, the punching and grinding operation is convenient, the requirement on the skill and proficiency of operators is low, and the operation is easy.
Drawings
Fig. 1 is a schematic structural diagram of the fixed point die-milling position adjustment in the present invention.
FIG. 2 is a schematic view showing the structure of the final grinding operation in the present invention.
FIG. 3 is a schematic structural view of an aluminum alloy casting having an oil passage according to the present invention.
Detailed Description
The invention provides a grinding process for an inner wall of a pipeline with an aluminum alloy casting with an oil way. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
According to the grinding process for the inner wall of the pipeline with the oil way aluminum alloy casting, as shown in fig. 3, the oil way aluminum alloy casting 1 with the oil way is provided with a plurality of bent oil ways 2, and in the traditional operation, a flexible milling cutter is used for grinding, so that the grinding transition and other conditions frequently occur, and the workpiece is scrapped.
The coping process comprises the following steps:
s1 endoscopic pointing:
the endoscope is adopted to carry out single-point recording on burrs, fleshiness and attachments in the pipeline, and the single-point recording comprises position information and size data.
Namely, larger burrs, fleshiness and attachments are marked clearly, and in the subsequent step, the markers are ground intensively at fixed points.
S2 fixed point punching and grinding position adjustment:
as shown in fig. 2, the implantation of the flexible tube 4 is performed according to the fixed point position 3, the free end 5 of the flexible tube 4 is a directional flushing end, and the endoscope is withdrawn by performing directional flushing end orientation adjustment for a single point through the flexible tube by the endoscope 6.
That is, the insertion of the matching hose 4 with the fixed point position 3 is performed according to the record in step S1, the endoscope 6 is inserted through the hose to the free end 5, the adjustment of the orientation of the fixed point position 3 is determined by rotating the hose 4, and the endoscope 6 can be withdrawn after the adjustment is completed.
In a specific embodiment, hose 4 periphery can set up the annular rib, and the surface of annular rib possesses anti-skidding line, has the clearance between anti-skidding line and the oil circuit inner wall, and like this design erodees the in-process in the later stage, and the difficult rotation that appears of hose can not excessively hinder hose 4's position degree again and adjust.
S3 fixed point punching and grinding operation:
and selecting water sand grinding materials according to the size data recorded by the current single point, and setting the intermittent impact frequency and the instantaneous impact water pressure of the water sand supply equipment.
The detailed description is that the intermittent impact frequency and the instantaneous impact water pressure are adjusted, so that fixed-point impact grinding is facilitated, and the grinding fluid after impact grinding cannot generate impact grinding on other parts and damage an oil way.
And S4 circulation operation:
and repeating the step S2 to the step S3 to complete the punching and grinding of all the single points in a circulating manner.
Note that fixed point grinding is performed in sequence in the direction of the pipeline.
And S5, finishing:
and selecting a water sand grinding material with the diameter smaller than 1mm to perform scouring on the pipeline, wherein the scouring flow speed is 1-2 m/s, and the scouring time is 2-3 min.
And finally, the wall of the oil line pipe is integrally punched and ground, so that the wall of the oil line pipe is smooth and easy.
In one embodiment, in step S1, a single point record is made of burrs, fleshiness, and attachments having an inside protrusion size of more than 2 mm. A projection of this size has a very large influence on the oil path, only that important piercing is necessary.
In one embodiment, in step S3, the diameter of the water sand abrasive is 1/4-1/2 of single-point convex size, the instantaneous impact water pressure is 0.1-0.3 MPa, the intermittent impact frequency is 20-30 per minute, and the duration is 3-5 minutes.
The process parameter combines the material characteristics of the aluminum alloy casting and the material characteristics of the attachments, the process parameter range can meet the requirements of the process parameter range, and the problem of damaging the wall of the oil line pipe is avoided.
In a preferred embodiment, in step S5, 0.5mm of pomegranate sand is selected as the water sand abrasive. And the grinding and cleaning operation of the oil line pipe wall is met by combining time and flow rate control. It should be noted that, before that, I did not adopt the steps from S1 to S4, but directly use the step S5, the diameter of the selected pomegranate sand particles is slightly larger, when the operation is set according to the parameters that the punching flow rate is 1-2 m/S and the punching time is 2-3 min, the wall surface abrasion is still in the tolerance range, but the removal force of burrs, fleshiness and attachments is insufficient, so that the punching requirements of large bulges are met by adopting the steps from S1 to S4, the oil path wall surface of the casting polished by the process is smooth, and the product percent of pass is very high.
Through the description, the grinding process for the inner wall of the pipeline with the oil-way aluminum alloy casting, disclosed by the invention, has the advantages that the water sand grinding material is adopted for punching and grinding, the surface of the wall of the oil-way pipe is smooth, the quality of the inner wall of the pipeline is greatly improved, the improvement of the gas or liquid permeability of the pipeline is facilitated, the product percent of pass is greatly improved, and the rejection rate is reduced. Burrs, fleshiness and attachments are independently punched and ground, the intermittent directional impact is reliable, the surface of the oil line pipe wall is not damaged, and the final integral punching and grinding is combined, so that the oil line pipe wall is smoother, and the process flow is scientific and reasonable. The process flow is simple, the punching and grinding operation is convenient, the requirement on the skill and proficiency of operators is low, and the operation is easy.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (2)
1. The grinding process for the inner wall of the pipeline with the oil way aluminum alloy casting is characterized by comprising the following steps of:
s1 endoscope is positioned at the inner part of the endoscope,
carrying out single-point recording on burrs, fleshiness and attachments in the pipeline by using an endoscope, wherein the single-point recording comprises position information and size data;
s2 adjusting the fixed point punching and grinding position,
implanting a hose according to the fixed-point position, wherein the free end of the hose is a directional flushing end, adjusting the direction of the directional flushing end aiming at the single point by passing the hose through an endoscope, and withdrawing the endoscope; the periphery of the hose is provided with an annular rib, and the outer surface of the annular rib is provided with anti-skid grains;
s3 performing fixed-point punching and grinding operation,
selecting water sand grinding materials according to the size data recorded by the current single point, and setting the intermittent impact frequency and the instantaneous impact water pressure of water sand supply equipment;
the operation of the S4 cycle is repeated,
repeating the step S2 to the step S3, and circularly finishing the punching and grinding of all the single points;
s5, carrying out the final grinding operation,
selecting a water sand grinding material with the diameter smaller than 1mm to perform scouring on the pipeline, wherein the scouring flow speed is 1-2 m/s, and the scouring time is 2-3 min;
in the step S1, performing single-point recording on burrs, fleshiness and attachments with the sizes of the inner bulges and the outer bulges of the pipeline exceeding 2 mm;
in the step S3, the diameter of the water sand abrasive is 1/4-1/2 of single-point convex size, the instantaneous impact water pressure is 0.1-0.3 MPa, the intermittent impact frequency is 20-30 times per minute, and the duration is 3-5 minutes.
2. The grinding process for the inner wall of the pipeline with the oil way aluminum alloy casting according to claim 1, characterized in that:
in the step S5, 0.5mm of pomegranate sand is selected as the water sand grinding material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910410653.XA CN110076698B (en) | 2019-05-16 | 2019-05-16 | Pipeline inner wall grinding process for aluminum alloy casting with oil way |
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| CN201910410653.XA CN110076698B (en) | 2019-05-16 | 2019-05-16 | Pipeline inner wall grinding process for aluminum alloy casting with oil way |
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| CN110076698B true CN110076698B (en) | 2021-02-02 |
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| CN110721944B (en) * | 2019-09-24 | 2022-02-18 | 中国船舶重工集团公司第七0七研究所 | Method for cleaning channel blockage of casting with elongated bent channel |
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| CN108972360A (en) * | 2018-08-13 | 2018-12-11 | 湖北三江航天涂装设备工程有限公司 | A kind of precision inner wall automatic cleaning machine |
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| DE10132451A1 (en) * | 2001-07-04 | 2003-01-30 | Bosch Gmbh Robert | Device for removing material arranged inside a workpiece |
| US20040132383A1 (en) * | 2002-08-14 | 2004-07-08 | Langford Mark A. | Fluid jet cutting system |
| CN101650318B (en) * | 2009-09-10 | 2011-06-22 | 三峡大学 | Device and method for non-destructive detection of crack defects on the inner surface of the buried deep section of the underground foundation of the electric pole |
| CN104802054A (en) * | 2015-04-13 | 2015-07-29 | 新疆智安博克自动化装备有限公司 | Intelligent robot used for welding line rust removal in pipeline |
| CN204790180U (en) * | 2015-07-09 | 2015-11-18 | 刘志国 | Endoscope equipment with cleaning function |
| JP6641197B2 (en) * | 2016-03-10 | 2020-02-05 | 株式会社荏原製作所 | Substrate polishing apparatus and polishing method |
| CN205833710U (en) * | 2016-07-15 | 2016-12-28 | 林潮湃 | A kind of cleaning spray gun with endoscope |
| CN106140744B (en) * | 2016-08-26 | 2018-05-18 | 广东月福汽车用品有限公司 | The improved hand-held flexible shaft cleaning equipment in pipeline cleaning |
| CN108015265A (en) * | 2017-11-02 | 2018-05-11 | 中国航发哈尔滨东安发动机有限公司 | Complicated cavity and oil circuit casting inner wall cleaning method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141600A (en) * | 1995-11-22 | 1997-06-03 | Atomo Tec Service Kk | High pressure cutting-off device and high pressure cutting-off method |
| CN108499993A (en) * | 2018-05-03 | 2018-09-07 | 徐州新南湖科技有限公司 | A kind of mold cooling pipe wall incrustation scale stripping off device |
| CN108972360A (en) * | 2018-08-13 | 2018-12-11 | 湖北三江航天涂装设备工程有限公司 | A kind of precision inner wall automatic cleaning machine |
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Effective date of registration: 20240912 Address after: 226001 No. 259, Shibei Gaoxin Road, Tangzha Town Street, Chongchuan District, Nantong City, Jiangsu Province Patentee after: Nantong Yuyun Automotive Technology Co.,Ltd. Country or region after: China Address before: Room 608, building 21, 388 Xinping street, Suzhou Industrial Park, Jiangsu Province 215000 Patentee before: SUZHOU TONGYI LIANQING POWER TECHNOLOGY CO.,LTD. Country or region before: China |