CN103692173A - Machining process for integral ductile cast iron piston - Google Patents
Machining process for integral ductile cast iron piston Download PDFInfo
- Publication number
- CN103692173A CN103692173A CN201210374315.3A CN201210374315A CN103692173A CN 103692173 A CN103692173 A CN 103692173A CN 201210374315 A CN201210374315 A CN 201210374315A CN 103692173 A CN103692173 A CN 103692173A
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- China
- Prior art keywords
- piston
- plug
- oil
- machining process
- whole
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- 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
- B05C7/04—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the work; the work being filled with liquid or other fluent material and emptied
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a machining process for an integral ductile cast iron piston. The machining process comprises the following steps: (1) performing rough machining; (2) performing aging and shot blasting; (3) soaking the entire piston into anti-rust oil, pulling the piston out of the anti-rust oil after the entire inner cavity of the piston is full of the anti-rust oil, and pouring the anti-rust oil out of the inner cavity; (4) blocking four oil blocking holes of the piston with chock plugs; (5) performing semifinishing; (6) performing fine machining; (7) removing the chock plugs for blocking the oil blocking holes; (8) cleaning. In the step (3) of the machining process, the non-machined surface of the piston is soaked in the oil, so that the non-machined surface of the piston can be prevented from rusting, and iron scrap blocks can be prevented from adhering to the non-machined surface of the piston.
Description
Technical field
The present invention relates to the processing technology of whole spherical iron piston.
Background technology
The piston material that internal combustion engine is used is the earliest cast iron, wherein using maximum is spheroidal graphite cast-iron, its sharpest edges are to have lower thermal coefficient of expansion and when high temperature, still have very high intensity, greatly improved the power output of internal combustion engine, so spherical iron piston is widely used in naval vessel, engineering machinery use and loading with on the high-power engines such as power vehicle.
The processing technology of whole spherical iron piston is at present: roughing, and------semifinishing---fine finishining---is cleaned for timeliness, shot-peening.Because piston cavity is non-machined surface, and only have four oily plug-holes and exterior, in timeliness, after blasting process, brighter in piston cavity, smooth, but because the process-cycle of piston is long, from blank to finished product, approximately want one-month period, therefore during this period, if protected not in time now, non-machined surface will be dimmed after a while, and then just get rusty easily, particularly in follow-up semifinishing process, a large amount of iron filings and the cooling fluids in process enter in inner chamber, after processing, be difficult to clean up, pass through again fine finishining, now the iron filings in inner chamber and cooling fluid can be bonded at piston face, piston cavity surface itself also can produce one deck rust staining in addition.In the end, in cleaning, bruting process, be difficult to iron rust to remove, particularly for the iron rust in inner chamber, there is no at present good rust cleaning way at all.
Current domestic whole spherical iron piston inner chamber is generally unclean, the existence phenomenon such as get rusty, particularly in process, the phenomenon of getting rusty especially severe, and the iron filings in process, cooling fluid are easy to enter inner chamber, this rust cleaning work afterwards of not only giving has brought trouble, and the poor of outward appearance comparison afterwards of eliminating rust, attractive in appearance before being far from getting rusty.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of processing technology of whole spherical iron piston, by this explained hereafter whole spherical iron piston out, can not get rusty, totally attractive in appearance.
In order to solve the problems of the technologies described above, technical scheme provided by the present invention is: the processing technology of whole spherical iron piston, comprises the following steps:
1. roughing;
2. timeliness, shot-peening;
3. by the whole immersion antirust oil of piston, after antirust oil is full of the whole inner chamber of piston, then piston is brought out from antirust oil, and the antirust oil in inner chamber is poured out;
4. with plug, block four oily plug-holes of piston;
5. semifinishing;
6. fine finishining;
7. the plug of blocking oily plug-hole is dismantled;
8. clean.
Preferred technical scheme: the plug of described step in is 4. trenail.
Another kind of preferred technical scheme: the plug of described step in is 4. threaded metal plug.
Adopted after technique scheme, the present invention has following beneficial effect: the effect 3. of (1) step of the present invention is that the non-machined surface of piston is excessively oily, so not only can prevent that the non-machined surface of piston from getting rusty, can also prevent that iron filings from becoming bulk to stick to the non-machined surface of piston.
(2) step of the present invention effect is 4. to make piston cavity with outside isolated, further plays antirust effect, prevents that in process, a large amount of iron filings enter in piston cavity simultaneously, guarantees the clean of piston cavity.
(3) step of the present invention plug is 4. trenail, and the highly versatile of trenail is used while being applicable to the trial-production of many kinds piston.
(4) step of the present invention plug is 4. threaded metal plug, and metal plug durable is applicable to long-term bulk article.
The specific embodiment
(embodiment 1)
The processing technology of the whole spherical iron piston of the present embodiment, comprises the following steps:
1. roughing.
2. timeliness, shot-peening.
3. by the whole immersion antirust oil of piston, after antirust oil is full of the whole inner chamber of piston, then piston is brought out from antirust oil, and the antirust oil in inner chamber is poured out, now the whole non-machined surface of piston has all been coated antirust oil.
4. with plug, block four oily plug-holes of piston, now piston cavity, with outside isolated, further plays antirust effect, prevents in following process process that iron filings are by entering in inner chamber in oily plug-hole simultaneously.Plug can be selected trenail or threaded metal plug.The feature of trenail is highly versatile, while being applicable to the trial-production of many kinds piston, uses.The feature of metal plug is durable, is applicable to long-term bulk article.
5. semifinishing.
6. fine finishining.
7. the plug of blocking oily plug-hole is dismantled, the quality that now can find piston cavity surface is the same with the effect after just shot-peening, has reached antirust object completely.
8. clean.
The reason that increases two procedures after step " timeliness, shot-peening " operation is 2. mainly because the non-machined surface of piston is now the cleanest, has not both cast scab defect, the phenomenon of not getting rusty again.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the processing technology of whole spherical iron piston, is characterized in that: comprise the following steps:
1. roughing;
2. timeliness, shot-peening;
3. by the whole immersion antirust oil of piston, after antirust oil is full of the whole inner chamber of piston, then piston is brought out from antirust oil, and the antirust oil in inner chamber is poured out;
4. with plug, block four oily plug-holes of piston;
5. semifinishing;
6. fine finishining;
7. the plug of blocking oily plug-hole is dismantled;
8. clean.
2. the processing technology of whole spherical iron piston according to claim 1, is characterized in that: the plug of described step in is 4. trenail.
3. the processing technology of whole spherical iron piston according to claim 1, is characterized in that: the plug of described step in is 4. threaded metal plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374315.3A CN103692173A (en) | 2012-09-27 | 2012-09-27 | Machining process for integral ductile cast iron piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374315.3A CN103692173A (en) | 2012-09-27 | 2012-09-27 | Machining process for integral ductile cast iron piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103692173A true CN103692173A (en) | 2014-04-02 |
Family
ID=50353924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210374315.3A Pending CN103692173A (en) | 2012-09-27 | 2012-09-27 | Machining process for integral ductile cast iron piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103692173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176956A (en) * | 2016-12-08 | 2018-06-19 | 慈溪市龙山汽配有限公司 | A kind of piston machining process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202301B1 (en) * | 1998-08-07 | 2001-03-20 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method for manufacturing piston of variable-capacity type compressor |
| CN201043258Y (en) * | 2007-04-03 | 2008-04-02 | 西安宏大交通科技有限公司 | Tool apron device of milling rotor |
| CN101413561A (en) * | 2008-11-24 | 2009-04-22 | 南阳淅减汽车减振器有限公司 | Production process method of automobile vibration damper piston rod |
| CN101462178A (en) * | 2008-12-30 | 2009-06-24 | 武汉重工铸锻有限责任公司 | Tool and method for processing half-speed machine crankshaft |
| CN102049670A (en) * | 2009-10-28 | 2011-05-11 | 苏州工业园区艺峰精密机械有限公司 | Method for manufacturing spherical piston |
| CN102213313A (en) * | 2011-05-27 | 2011-10-12 | 大连滨城活塞制造有限公司 | Processing technology for whole spherical iron piston |
| CN102407431A (en) * | 2011-11-02 | 2012-04-11 | 山东滨州渤海活塞股份有限公司 | Technology for manufacturing hotly-spun pressed forged steel single-piece piston with inner cooling oil cavity |
| CN102465326A (en) * | 2010-11-17 | 2012-05-23 | 徐金兰 | Piston oxidization treatment process |
-
2012
- 2012-09-27 CN CN201210374315.3A patent/CN103692173A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202301B1 (en) * | 1998-08-07 | 2001-03-20 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method for manufacturing piston of variable-capacity type compressor |
| CN201043258Y (en) * | 2007-04-03 | 2008-04-02 | 西安宏大交通科技有限公司 | Tool apron device of milling rotor |
| CN101413561A (en) * | 2008-11-24 | 2009-04-22 | 南阳淅减汽车减振器有限公司 | Production process method of automobile vibration damper piston rod |
| CN101462178A (en) * | 2008-12-30 | 2009-06-24 | 武汉重工铸锻有限责任公司 | Tool and method for processing half-speed machine crankshaft |
| CN102049670A (en) * | 2009-10-28 | 2011-05-11 | 苏州工业园区艺峰精密机械有限公司 | Method for manufacturing spherical piston |
| CN102465326A (en) * | 2010-11-17 | 2012-05-23 | 徐金兰 | Piston oxidization treatment process |
| CN102213313A (en) * | 2011-05-27 | 2011-10-12 | 大连滨城活塞制造有限公司 | Processing technology for whole spherical iron piston |
| CN102407431A (en) * | 2011-11-02 | 2012-04-11 | 山东滨州渤海活塞股份有限公司 | Technology for manufacturing hotly-spun pressed forged steel single-piece piston with inner cooling oil cavity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176956A (en) * | 2016-12-08 | 2018-06-19 | 慈溪市龙山汽配有限公司 | A kind of piston machining process |
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Application publication date: 20140402 |