CN102703651A - Manufacturing method for hydraulic system oil cylinder of concrete pump truck and product thereof - Google Patents
Manufacturing method for hydraulic system oil cylinder of concrete pump truck and product thereof Download PDFInfo
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- CN102703651A CN102703651A CN2012102203552A CN201210220355A CN102703651A CN 102703651 A CN102703651 A CN 102703651A CN 2012102203552 A CN2012102203552 A CN 2012102203552A CN 201210220355 A CN201210220355 A CN 201210220355A CN 102703651 A CN102703651 A CN 102703651A
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- oil cylinder
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- hydraulic system
- concrete pump
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- Pistons, Piston Rings, And Cylinders (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a manufacturing method for a hydraulic system oil cylinder of a concrete pump truck and a product of the hydraulic system oil cylinder. The manufacturing method is a surface treatment method in which a plasma strengthening layer is added on the surface of the inner wall of the oil cylinder so as to prolong the contact fatigue life of the inner wall of the oil cylinder. The manufacturing method comprises the manufacturing procedures of lathing, boring and machining on a milling machine, and is characterized in that the oil cylinder to be machined is ground by a grinder to achieve the roughness Ra no more than 0.4 microns, the inner wall of the oil cylinder is subjected to quenching strengthening treatment on a plasma super laser machine, and the strengthening layer with the thickness of 0.3-1.0 mm is formed on the surface of the inner wall of the oil cylinder after the quenching treatment. The strengthening layer of the oil cylinder is well combined with the inner wall of the oil cylinder, the wear resistance is excellent, the basic size and shape of a basal body are not changed basically, no environmental pollution or contact fatigue is generated, and the service life is prolonged by several times compared with the abrasion performance of an oil cylinder with a chromium coating in the traditional processing technology.
Description
Technical field
The present invention relates to a kind of intensified process technology of utilizing the plasma machine; Method of manufacture of a kind of concrete pump vehicle hydraulic system oil cylinder and products thereof is particularly disclosed; Be that a kind of plasma strengthening is handled the complete processing process for modifying surface, belong to Machining Technology and Surface Engineering field.
Background technology
The oil cylinder cylinder is mainly used in truck, hydraulicefficiency system etc.At present, the common technological process of production is to adopt 45
#Finish rolling steel pipe heavy boring, modifier treatment to the HB260, after the mill that spreads out, re-plating 0.05 mm left and right sides hard chrome polishes finished product at last.If some contacts with hard band in the reciprocating process in cylinder sleeve to adopt the helical trajectory form to have piston; Another part contacts with soft band; Cause the radial extrusion power and the tangent direction friction power of piston-ring inhomogeneous; And pitch the washboard effect can occur when big, causes gas blowby, and barrel wear causes vibrations.The oil cylinder of conventional machining process is also can be because of these former thereby often break down.
Abroad, like countries such as Japan, Germany, to oil cylinder sophisticated intensifying technology and product are arranged early, China's pump truck industry, hydrauliccontrol system are started late; Aspect the oil cylinder surface Hardening Treatment scientific research especially very little, during indivedual enterprises adopt inboard wall of cylinder block, in. high frequency is handled, though can improve the surface hardness of cylinder body; But its degree of depth is not ideal enough, and the rigidity layer form is single, and operation is trouble; And surface oxidation easily influences surfaceness, and most critical is to have improved cost significantly.
Summary of the invention
The present invention is directed to oil cylinder inner wall intensified process problem; Through exploring scientific research for many years; Successfully solved the prior art inboard wall of cylinder block easy to wear, technical barrier such as pull, method of manufacture of a kind of concrete pump vehicle hydraulic system oil cylinder and products thereof is provided, adopt plasma super laser machine to carry out the hardened face intensified process; Increase the wear resistance of oil cylinder, improve the work-ing life of oil cylinder.
The present invention is achieved in that a kind of method of manufacture of concrete pump vehicle hydraulic system oil cylinder; Comprise the mechanical workout operation on car, boring, the milling machine; It is characterized in that: oil cylinder to be processed is spread out to grind at the grinding machine that spreads out reaches roughness Ra≤0. 4 μ m; With the intensified process of quenching on the plasma super laser machine, the oil cylinder inner wall surface forms strengthening layer after quench treatment with oil cylinder inner wall, and described thickness of strengthened layer reaches 0.3～1.0 mm.The strengthening layer on described oil cylinder inner wall surface is greater than hardness HRC60.The quenching apparatus of described plasma super laser intensified process is the ASJG01-3000 type plasma super laser machine that Wuxi difficult to understand gloomy Seiko machinery ltd produces.
Method of manufacture of the present invention may further comprise the steps:
1,45
#Rough turn, the boring of finish rolling steel pipe inwall;
2, spread out and be milled to roughness Ra≤0. 4 μ m;
3, adopt the plasma super laser machine formation strengthening layer that quenches;
4, polishing processed finished products.
The invention has the beneficial effects as follows: the present invention adopts plasma super laser machine to quench; Form the strengthening layer of cross network or Wave spiral shape on the oil cylinder inner wall surface; These track forms make the radially stressed evenly with the tangential of piston rod; And piston-ring to-and-fro movement the time, contacts evenly friction all the time with hardenability band in cylinder sleeve.Unhardened zone becomes hardened gap location " oil sump " again, can improve the pairing frictional behaviour of cylinder sleeve and piston-ring greatly.Combine well between strengthening layer and oil cylinder inner wall, wearability is strong, does not change the matrix size and dimension basically, and non-environmental-pollution, contact fatigue. and wear resistance will improve more than the several times than conventional machining process chromium coating oil cylinder work-ing life.Technology of the present invention belongs to domestic initiation, has filled up the blank of domestic this technology.
Embodiment
Method of manufacture of a kind of concrete pump vehicle hydraulic system of the present invention oil cylinder and products thereof comprises the mechanical workout operation on car, boring, the milling machine.Step is specific as follows:
1, finish rolling steel pipe substrate surface pre-treatment: adopt the rough turn cylindrical of digital controlled lathe earlier, numerical control borer roughing endoporus, the cleaning iron filings, described finish rolling steel pipe base material is 45
#Steel.
2, the mill that spreads out is handled: heavy boring process 45
#The finish rolling steel pipe mill that on the grinding machine that spreads out, spreads out, roughness reaches Ra≤0. 4 μ m.
3, plasma super laser intensified process: the mill that spreads out good 45
#The finish rolling steel pipe quenches on the ASJG01-3000 type plasma super laser machine that the difficult to understand gloomy Seiko machinery in Wuxi ltd produces and forms strengthening layer, and the inner wall surface thickness of strengthened layer can reach 0.3 ~ 1.0 mm.
4, polished finish: forming 45 of plasma strengthening layer
#The finish rolling steel pipe polishes on the grinding machine that spreads out, roughness Ra≤0. 4 μ m.
The thickness of strengthened layer on oil cylinder inner wall of the present invention surface reaches 0.3 ~ 1.0 mm, and the strengthening layer that forms can regulate, and hardness reaches more than the HRC60.The present invention adopts the plasma strengthening treatment technology, and it is dark to obtain thickness, and the strengthening layer that hardness is high has improved performances such as oil cylinder inner wall wear resistance and contact fatigue, and has increased substantially the work-ing life of oil cylinder.
Claims (4)
1. the method for manufacture of a concrete pump vehicle hydraulic system oil cylinder; Comprise the mechanical workout operation on car, boring, the milling machine; It is characterized in that: oil cylinder to be processed is spread out to grind at the grinding machine that spreads out reaches roughness Ra≤0. 4 μ m; With the intensified process of quenching on the plasma super laser machine, the oil cylinder inner wall surface forms strengthening layer after quench treatment with oil cylinder inner wall, and described thickness of strengthened layer reaches 0.3～1.0 mm.
2. according to the method for manufacture of the described concrete pump vehicle hydraulic system of claim 1 oil cylinder, it is characterized in that: the strengthening layer on described oil cylinder inner wall surface is greater than hardness HRC60.
3. according to the method for manufacture of claim 1 or 2 described concrete pump vehicle hydraulic system oil cylinders, it is characterized in that: the quenching apparatus of described plasma super laser intensified process is the ASJG01-3000 type plasma super laser machine that Wuxi difficult to understand gloomy Seiko machinery ltd produces.
4. concrete pump vehicle hydraulic system oil cylinder that is obtained by any said method of manufacture in the claim 1～3, it is characterized in that: after plasma strengthening was handled, the thickness of strengthened layer of said oil cylinder inner wall reached 0.3～1.0 mm, and hardness is greater than HRC60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102203552A CN102703651A (en) | 2012-06-29 | 2012-06-29 | Manufacturing method for hydraulic system oil cylinder of concrete pump truck and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102203552A CN102703651A (en) | 2012-06-29 | 2012-06-29 | Manufacturing method for hydraulic system oil cylinder of concrete pump truck and product thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102703651A true CN102703651A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102203552A Pending CN102703651A (en) | 2012-06-29 | 2012-06-29 | Manufacturing method for hydraulic system oil cylinder of concrete pump truck and product thereof |
Country Status (1)
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| CN (1) | CN102703651A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2539552C2 (en) * | 2013-05-06 | 2015-01-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Северо-Кавказская государственная гуманитарно-технологическая академия" | Quenching of cylindrical tool mandrels |
| CN104999222A (en) * | 2015-06-10 | 2015-10-28 | 重庆跃进机械厂有限公司 | Precise machining method for low-speed diesel engine oil cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386903A (en) * | 2007-09-11 | 2009-03-18 | 韦星野 | Application of laser heat treatment technology in marine diesel cylinder liner |
| CN101591724A (en) * | 2008-05-29 | 2009-12-02 | 韦星野 | Laser heat treatment technology in the drum type compression cylinder is used |
| CN101649375A (en) * | 2008-08-12 | 2010-02-17 | 韦加伟 | Laser honing technology for cylinder liner of supercharger engine of automobile |
| CN101655117A (en) * | 2008-08-21 | 2010-02-24 | 山东众力液压技术有限公司 | High-strength engineering machinery hydraulic cylinder |
| CN202673829U (en) * | 2012-06-29 | 2013-01-16 | 上海鸿得利重工股份有限公司 | Cylinder for hydraulic system of concrete pump truck |
-
2012
- 2012-06-29 CN CN2012102203552A patent/CN102703651A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386903A (en) * | 2007-09-11 | 2009-03-18 | 韦星野 | Application of laser heat treatment technology in marine diesel cylinder liner |
| CN101591724A (en) * | 2008-05-29 | 2009-12-02 | 韦星野 | Laser heat treatment technology in the drum type compression cylinder is used |
| CN101649375A (en) * | 2008-08-12 | 2010-02-17 | 韦加伟 | Laser honing technology for cylinder liner of supercharger engine of automobile |
| CN101655117A (en) * | 2008-08-21 | 2010-02-24 | 山东众力液压技术有限公司 | High-strength engineering machinery hydraulic cylinder |
| CN202673829U (en) * | 2012-06-29 | 2013-01-16 | 上海鸿得利重工股份有限公司 | Cylinder for hydraulic system of concrete pump truck |
Non-Patent Citations (2)
| Title |
|---|
| 《机械工程师》 20120310 周宇 "激光表面改性在液压油缸加工中的应用" 第32-33页 1-4 , 第3期 * |
| 周宇: ""激光表面改性在液压油缸加工中的应用"", 《机械工程师》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2539552C2 (en) * | 2013-05-06 | 2015-01-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Северо-Кавказская государственная гуманитарно-технологическая академия" | Quenching of cylindrical tool mandrels |
| CN104999222A (en) * | 2015-06-10 | 2015-10-28 | 重庆跃进机械厂有限公司 | Precise machining method for low-speed diesel engine oil cylinder |
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Application publication date: 20121003 |