CN103192227A - Method for remedying water-eroded defects on surface of engine cylinder block - Google Patents
Method for remedying water-eroded defects on surface of engine cylinder block Download PDFInfo
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- CN103192227A CN103192227A CN2013101411707A CN201310141170A CN103192227A CN 103192227 A CN103192227 A CN 103192227A CN 2013101411707 A CN2013101411707 A CN 2013101411707A CN 201310141170 A CN201310141170 A CN 201310141170A CN 103192227 A CN103192227 A CN 103192227A
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- cylinder block
- engine cylinder
- reconditioning
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- blank surface
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
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Abstract
The invention discloses a method for remedying water-eroded defects on the surface of an engine cylinder block and belongs to the technical field of engine cylinder refabrication. The method includes: polishing the defective surface to expose a cylinder block body; polishing sharp corners or edges of the cylinder block body; removing oil at defective positions; re-polishing; cleaning the defective positions; remedying the defective positions by electric spark ionic microwelding to make the welded positions higher than the surface of the cylinder block; and polishing the welded positions to make the welded positions level to the surface of the cylinder block. The method effectively guarantees fine bonding of welding material and the cylinder block body during welding. The cylinder block body is not heated, deformed or undercut, and the welding material is metallurgically combined with the cylinder block body under fine intensity. The shape and precision of the defective positions are restored fully, original properties of a workpiece are restored, and the water-eroded defects on the surface of the engine cylinder block are remedied.
Description
Technical field
The invention belongs to engine cylinder block re-manufacturing technology field, relate in particular to a kind of restorative procedure of engine cylinder block blank surface water erosion defective.
Background technology
Making is a kind of industry of waste product being implemented high-tech reparation and transformation again, its at be the parts that damage or be about to scrap, on the basis that performance failure analysis, life appraisal etc. are analyzed, carry out again the manufacturing engineering design, adopt recovery technique, workpiece shape and precision are recovered, made the quality that manufactures a product again meet or exceed new product.
The engine cylinder block water erosion is the common defects that old engine cylinder block exists, position ubiquities such as plane, water-jacket space blanking cover hole correspondence position and other and water contact surface on engine cylinder block.This defective is not repaired, cylinder block by the use after making again in, can occur leaking, serious problems such as water jacket perforation, cause engine normally not use, even scrap.Again because engine cylinder block is complex-shaped, machined surface, hole etc. are intensive and required precision is high, the improper meeting of restorative procedure causes relative dimensions overproof and scrap, so the reparation of water erosion defective becomes the technical barrier that engine cylinder block must be captured in the manufacture process again, if this defective can not realize repairing, directly cause to realize the manufacturing again of old engine cylinder block.
At present, the restorative procedure for engine cylinder block blank surface water erosion defective mainly contains following two kinds:
First method is processed processing after adopting healant that defective is filled up again, recover workpiece shape and precision, it is to lean on the bonding force of healant that healant and cylinder block bulk junction are lumped together that healant is filled up mode, a little less than the adhesion, easily come off, healant is the mixture of powder thing and adhesive, is incorporated on the cylinder block body to solidify solidification mode, intensity and corrosion resistance deficiency, service life is short;
Second method is carried out wlding with common welding manner at rejected region and is piled up, and processes processing after filling up defective, recovers workpiece shape and precision.Common welding manner is with wlding and the fusing of cylinder block body by high temperature, wlding is piled up on the cylinder block body, realize the repairing of defective, in the banking process, cylinder block body heat affected zone is big, very easily causes the distortion of workpiece and causes workpiece to be scrapped, because workpiece is complex-shaped, measures such as insulation in being difficult to realize welding, welding stress are difficult to eliminate, and are prone to defectives such as crackle in the use.
Summary of the invention
Technical problem to be solved by this invention is: the restorative procedure of a kind of engine cylinder block blank surface water erosion defective is provided, causes being difficult to realizing technical problem that the engine cylinder block that has the water erosion defective is made again so that the restorative procedure that solves existing engine cylinder block blank surface water erosion defective is unreliable.
For solving the problems of the technologies described above, technical scheme of the present invention is: the restorative procedure of engine cylinder block blank surface water erosion defective comprises the following steps of implementing successively:
(1) the cylinder block body is exposed on reconditioning rejected region surface;
(2) wedge angle or the seamed edge on the described cylinder block body of reconditioning;
(3) remove the oil of described rejected region;
(4) reconditioning of repeating step (1), step (2) is handled;
(5) clean described rejected region;
(6) repair described rejected region with the microbonding of electric spark ion, make the welding position be higher than the blank surface of described cylinder block;
(7) described welding position is milled to the blank of described cylinder block surface and maintains an equal level.
As a kind of improvement, in step (3), utilize firing method to remove oil, described firing method is for smearing combustible medium at described rejected region and lighting.
As further improvement, in step (6), described welding position is than the high 0.3mm～0.5mm in blank surface of described cylinder block.
As further improvement, in step (1) and step (2), adopt wire wheel or pneumatic dresser reconditioning; In step (7), adopt the resin wheel reconditioning.
As further improvement, the wlding of described electric spark ion microbonding is the nichrome of diameter 2mm.
After having adopted technique scheme, the invention has the beneficial effects as follows: owing to before welding, rejected region has been carried out reconditioning, oil removing, reconditioning and cleaning step again, make and all thoroughly to eliminate wlding is combined the factor that impacts and may be caused welding stress with the cylinder block body factor, the good combination of wlding and cylinder block body when effectively guaranteeing follow-up welding; Because electric spark ion microbonding action time is short, the cylinder block body does not generate heat, indeformable, not undercut, wlding and cylinder block body be combined into metallurgical binding, bond strength is good; Because after welding was finished, it is fair that described welding position is milled to the blank surface of described cylinder block, the shape of workpiece and precision recovered, thereby recovered the original performance of workpiece, finished the reparation to engine cylinder block blank surface water erosion defective comprehensively.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
A kind of restorative procedure of engine cylinder block blank surface water erosion defective comprises the following steps of implementing successively:
(1) wire wheel, pneumatic dresser or other reconditioning instruments etc. can be adopted in reconditioning rejected region surface, expose the cylinder block body;
(2) wedge angle or the seamed edge on this cylinder block body of reconditioning can adopt wire wheel, pneumatic dresser or other reconditioning instruments etc.;
(3) remove the oil of this rejected region, utilize firing method to remove oil, this firing method is for smearing combustible medium at this rejected region and lighting, and preferred, combustible medium comprises alcohols such as alcohol;
(4) reconditioning of repeating step (1), step (2) is handled;
(5) clean this rejected region, preferably adopt alcohol wash, can certainly adopt other cleaning fluids;
(6) repair this rejected region with the microbonding of electric spark ion, the wlding of electric spark ion microbonding is preferably the nichrome of diameter 2mm, make the welding position be higher than the blank surface of this cylinder block, preferred, this welding position is than the high 0.3mm～0.5mm in blank surface of this cylinder block;
(7) this welding position is milled to the blank of this cylinder block surface and maintains an equal level, can adopt small-sized resin wheel reconditioning.
Embodiment one:
Repair the water erosion defective in the water jacket blanking cover hole of engine cylinder block, water jacket blanking cover hole is the blank surface on the engine cylinder block, and other corresponding defect repair processes in blank surface are identical, and it comprises the steps:
(1) according to the shape of rejected region, select this rejected region surface of wire wheel reconditioning for use, remove this rejected region surface oxide layer, greasy dirt etc. and be unfavorable for the factor that wlding is combined with the cylinder block body in the follow-up welding process, expose this cylinder block body;
(2) with wedge angle or seamed edge on this cylinder block body of wire wheel reconditioning, make wedge angle or seamed edge on this cylinder block body realize rounding off, avoid follow-up welding sequence to occur in conjunction with bad;
(3) rejected region after reconditioning is coated alcohol and is lighted, and removes the oil that immerses in this cylinder block body;
(4) reconditioning of repeating step (1), step (2) is handled;
(5) rejected region after reconditioning is smeared alcohol, cleans this rejected region, avoids follow-up welding process to occur in conjunction with bad;
(6) high frequency voltage that utilizes electric spark ion microbonding machine to produce forms ion gas with gas breakdown, thereby produce up to 8000 ° of electric sparks more than the C, utilize electric spark with the meltability anode at instant melting under the argon shield to this cylinder block body, finish metal accumulation, make the welding position than the high 0.3mm in this cylinder block blank surface, the realization defective is repaired fast, the nichrome of the preferred diameter 2mm of meltability anode, because the electric spark activity duration is short, be generally for 1～10 nanosecond, this cylinder block body does not generate heat, indeformable, not undercut, wlding and this cylinder block body be combined into metallurgical binding, bond strength is good;
(7) it is fair to adopt small-sized resin wheel that this welding position is milled to the blank surface of this cylinder block, the shape of workpiece and precision is recovered comprehensively, thereby recovered the original performance of workpiece.
Embodiment two:
Repair the water erosion defective in the water jacket blanking cover hole of engine cylinder block, water jacket blanking cover hole is the blank surface on the engine cylinder block, and other corresponding defect repair processes in blank surface are identical, and it comprises the steps:
(1) according to the shape of rejected region, select pneumatic dresser reconditioning rejected region surface for use, remove this rejected region surface oxide layer, greasy dirt etc. and be unfavorable for the factor that wlding is combined with this cylinder block body in the follow-up welding process, expose this cylinder block body;
(2) with wedge angle or seamed edge on this cylinder block body of pneumatic dresser reconditioning, make wedge angle or seamed edge on this cylinder block body realize rounding off, avoid follow-up welding sequence to occur in conjunction with bad;
(3) rejected region after reconditioning is coated alcohol and is lighted, and removes the oil that immerses in this cylinder block body;
(4) reconditioning of repeating step (1), step (2) is handled;
(5) rejected region after reconditioning is smeared alcohol, cleans this rejected region, avoids follow-up welding process to occur in conjunction with bad;
(6) high frequency voltage that utilizes electric spark ion microbonding machine to produce forms ion gas with gas breakdown, thereby produce up to 8000 ° of electric sparks more than the C, utilize electric spark with the meltability anode at instant melting under the argon shield to this cylinder block body, finish metal accumulation, make the welding position than the high 0.5mm in this cylinder block blank surface, the realization defective is repaired fast, the nichrome of the preferred diameter 2mm of meltability anode, because the electric spark activity duration is short, be generally for 1～10 nanosecond, this cylinder block body does not generate heat, indeformable, not undercut, wlding and this cylinder block body be combined into metallurgical binding, bond strength is good;
(7) it is fair to adopt small-sized resin wheel that this welding position is milled to the blank surface of this cylinder block, the shape of workpiece and precision is recovered comprehensively, thereby recovered the original performance of workpiece.
The restorative procedure of the engine cylinder block blank surface water erosion defective that the embodiment of the invention provides, owing to before welding, rejected region has been carried out reconditioning, oil removing, reconditioning and cleaning step again, make and all thoroughly to eliminate wlding is combined the factor that impacts and may be caused welding stress with the cylinder block body factor, the good combination of wlding and cylinder block body when effectively guaranteeing follow-up welding; Because electric spark ion microbonding action time is short, the cylinder block body does not generate heat, indeformable, not undercut, wlding and cylinder block body be combined into metallurgical binding, bond strength is good; Because after welding was finished, it is fair that described welding position is milled to the blank surface of described cylinder block, the shape of workpiece and precision recovered, thereby recovered the original performance of workpiece, finished the reparation to engine cylinder block blank surface water erosion defective comprehensively.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the restorative procedure of engine cylinder block blank surface water erosion defective is characterized in that, comprises the following steps of implementing successively:
(1) the cylinder block body is exposed on reconditioning rejected region surface;
(2) wedge angle or the seamed edge on the described cylinder block body of reconditioning;
(3) remove the oil of described rejected region;
(4) reconditioning of repeating step (1), step (2) is handled;
(5) clean described rejected region;
(6) repair described rejected region with the microbonding of electric spark ion, make the welding position be higher than the blank surface of described cylinder block;
(7) described welding position is milled to the blank of described cylinder block surface and maintains an equal level.
2. the restorative procedure of engine cylinder block blank surface water erosion defective according to claim 1 is characterized in that, in step (3), utilizes firing method to remove oil, and described firing method is for smearing combustible medium at described rejected region and lighting.
3. the restorative procedure of engine cylinder block blank surface water erosion defective according to claim 2 is characterized in that, in step (6), described welding position is than the high 0.3mm～0.5mm in blank surface of described cylinder block.
4. the restorative procedure of engine cylinder block blank surface water erosion defective according to claim 3 is characterized in that, adopts wire wheel or pneumatic dresser reconditioning in step (1) and step (2); In step (7), adopt the resin wheel reconditioning.
5. the restorative procedure of engine cylinder block blank surface water erosion defective according to claim 4 is characterized in that the wlding of described electric spark ion microbonding is the nichrome of diameter 2mm.
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| CN201310141170.7A CN103192227B (en) | 2013-04-22 | 2013-04-22 | The restorative procedure of engine cylinder block blank surface water erosion defect |
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| CN201310141170.7A CN103192227B (en) | 2013-04-22 | 2013-04-22 | The restorative procedure of engine cylinder block blank surface water erosion defect |
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Cited By (2)
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| CN103447746A (en) * | 2013-09-06 | 2013-12-18 | 潍柴动力(潍坊)再制造有限公司 | Surface treatment process of engine body in engine refabrication process |
| CN111992979A (en) * | 2020-08-18 | 2020-11-27 | 青岛欧开智能***有限公司 | Automatic repairing method for inner wall of hydraulic cylinder |
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| CN111992979A (en) * | 2020-08-18 | 2020-11-27 | 青岛欧开智能***有限公司 | Automatic repairing method for inner wall of hydraulic cylinder |
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| CN103192227B (en) | 2015-09-09 |
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Effective date of registration: 20210309 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: Weichai Power Co.,Ltd. Address before: No. 197, Fushou East Street, high tech Development Zone, Weifang City, Shandong Province, 261061 Patentee before: WEICHAI POWER (WEIFANG) REMANUFACTURING Co.,Ltd. |