CN104162761A - Flywheel crack repair method - Google Patents
Flywheel crack repair method Download PDFInfo
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- CN104162761A CN104162761A CN201410406182.2A CN201410406182A CN104162761A CN 104162761 A CN104162761 A CN 104162761A CN 201410406182 A CN201410406182 A CN 201410406182A CN 104162761 A CN104162761 A CN 104162761A
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- flywheel
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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
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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Abstract
The invention discloses a flywheel crack repair method. The flywheel crack repair method includes the following steps of firstly, conducting grinding in the direction of a crack with the crack as the center to form a groove, and conducting milling at certain intervals in the direction perpendicular to the groove to form a plurality of ditch grooves, wherein the depth of the ditch grooves is larger than or equal to one third of the depth of the groove; secondly, drilling through holes with the starting point and the ending point of the crack as the circle centers; thirdly, conducing bead welding in the ditch grooves through stainless steel electrodes, wherein the height of bead welding ranges from one half to two thirds of the depth of the ditch grooves; fourthly, preheating a flywheel to the temperature of 600 DEG C to 800 DEG C, pouring molten-state nickel-cobalt- molybdenum-manganese-base alloy into the rest of the space of the through hole and the rest of the space of the groove, and conducting cooling at the room temperature; fifthly, machining and removing the redundant dead welding material and the redundant pouring material till the size is qualified. The flywheel crack repair method is simple in repair process and good in repair effect; the repaired flywheel is long in service life, and the flywheel crack repair method is suitable for repairing the crack of the flywheel in batches.
Description
Technical field
The present invention relates to a kind of method for repairing and mending of casting workpiece crackle, relate in particular to a kind of flywheel Crack Repairing method.
Background technology
Flywheel is mainly cast iron quality, and manufacture craft is generally first casts machined after embryo.Consider cost of manufacture, the trade mark of the ironcasting blank of manufacture flywheel is relatively low, and because phosphorus content in material itself is high, flywheel, under long-term high rotating speed and slow-revving frequent effect of alternately switching, easily occurs crackle and then damage because fatigue damage causes.
The general treating method of tearing trade-in open that adopts of prior art is carried out maintenance process.
Along with the continuous rising of automobile pollution, the waste and old flywheel quantity changing is every year very huge, once there is crackle, just can only melt down and be smelted into iron and steel as scrap iron raw material, and this is not the solution of a kind of economy, environmental protection.
How to repair the old and utilize scraps, become a technical problem urgently to be resolved hurrily in industry.
Chinese patent application CN101357429B discloses a kind of repair method of ironcasting of fracture, its by first by cast iron by section polish groove, preheating is carried out in the position of pre-welding, then use welding rod welding, weld completely, this welding position is incubated, it is before carrying out preheating to the position of this pre-welding, on the section of this ironcasting, turn hole and strand is made screw thread, construction bolt in this hole then, and this bolt welding is fixed.
Technique scheme, carrying out, thicker, break is many and while there is irregularity phenomenon, or during the repairing of the cast iron part that break area is less, by turning hole and twist and make screw thread on section, then construction bolt in this hole, finally bolt " is solidified " in the workpiece after repairing and become one with workpiece, guaranteed preferably compression strength and the shear strength of workpiece after soldering.
But this method is mainly applicable to the repair by welding of the pedestal of the main equipment that thickness of workpiece is thicker, can not be for the repairing of flywheel; And its technique relative complex, operation easier are large.
Summary of the invention
The object of the invention is, a kind of flywheel Crack Repairing method is provided, its repair technology is simple, repair efficiency good, the flywheel long service life after repairing.
The present invention for achieving the above object technical issues that need to address is how to guarantee anti-shearing, the conforming technical problem of antifatigue damage ability of flywheel mend and remainder.
The present invention solves the problems of the technologies described above adopted technical scheme to be, a kind of flywheel Crack Repairing method, is characterized in that, comprises the following steps:
The first step, centered by crackle, polish groove along the trend of crackle;
Direction along vertical with groove, mills out some grooves at a certain distance, and the degree of depth of this groove is more than or equal to 1/3rd of described groove depth;
Second step, the Dian Wei center of circle, initial sum ultimate position with crackle drills through open-work respectively;
The 3rd step, adopts stainless steel electrode built-up welding in described groove, and built-up welding is highly 1/2nd to 2/3rds of groove depth; In welding process, every weldering one deck, knocks and removes welding slag, coating;
The 4th step, is preheated to 600-800 degree by flywheel, pours into a mould molten state alloy in the remaining space of penetrating hole and groove, cooling under room temperature;
Described alloy is nickel-cobalt-molybdenum-manganese-base alloy;
The 5th step, removes unnecessary resurfacing welding material and mould material processing, qualified to size.
The technique effect that technique scheme is directly brought is, 1, repair technology simply, easily go; 2, the flywheel after repairing is at bulk strength, and particularly shearing strength aspect has larger improving, thereby can improve antifatigue damage ability and the service life of flywheel.Ananlysis of main cause is as follows:
In groove, adopt the stainless steel electrode that nickel content is higher to carry out built-up welding, make the relatively high cast iron materials of former cracks phosphorus content, by hard and malleable metallic nickel, replaced, thereby significantly strengthened the antifatigue damage ability at this place;
And because the trend of groove is mutually vertical with groove, and because cobalt is hard and crisp, molybdenum is hard and tough and tensile, hard and crisp, the potassium steel of manganese is both hard is rich in toughness, therefore in groove, pass through cast hardness, intensity and the higher nickel-cobalt-molybdenum-manganese-base alloy of toughness, alloy material high by this intensity, good toughness plays the effect of similar framework junction part, has significantly improved the binding strength of groove both sides;
And, at initiating terminal and the end of crackle, hole respectively and pour into a mould alloy material, further strengthened the durability on repairing treatment rear flywheel is used.
As preferably, above-mentioned flywheel material is casting pig.
The technique effect that this optimal technical scheme is directly brought is, because the cost of nickel-cobalt-molybdenum-manganese-base alloy is relatively high, thereby this repair technology to be mainly used in phosphorus content relatively high, and the relatively low casting pig with flake graphite structure of the trade mark, has good Technical Economy.
Further preferably, above-mentioned stainless steel electrode is chromium nickel stainless steel welding rod.
The technique effect that this optimal technical scheme is directly brought is, adopts chromium nickel stainless steel welding rod in the enterprising windrow weldering of casting pig base material, and solderability is better, and welding operation is simple.
It should be noted that, adopt stainless steel electrode to carry out built-up welding, built-up welding is highly 1/2nd to 2/3rds of groove depth; Also be the consideration based on Technical Economy aspect.
In sum, the present invention has that repair technology is simple, repair efficiency good, the flywheel long service life after repairing, and is suitable for the flywheel crackle beneficial effect such as repairing treatment in batches.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
Flywheel material is casting pig, its crack depth 25mm, the about 120mm of crack length;
Method for repairing and mending comprises the following steps:
The first step, centered by crackle, polish groove along the trend of crackle; Direction along vertical with groove, mills out some grooves at a certain distance; Wherein, groove depth 30mm, gash depth 15mm, trench length is 20mm;
Second step, the Dian Wei center of circle, initial sum ultimate position with crackle drills through open-work respectively, and aperture is 10mm;
The 3rd step, adopts the built-up welding in groove of chromium nickel stainless steel welding rod, and built-up welding is highly 10mm; In welding process, every weldering one deck, knocks and removes welding slag, coating;
The 4th step, is preheated to 650 degree by flywheel, pours into a mould molten state nickel-cobalt-molybdenum-manganese-base alloy in the remaining space of penetrating hole and groove;
The 5th step, removes unnecessary resurfacing welding material and mould material processing, until size is qualified.
Through the flywheel of repairing treatment, through reusing 3 years, without new crackle, produce.
Embodiment 2
Flywheel material is casting pig, its crack depth 30mm, the about 220mm of crack length;
Method for repairing and mending comprises the following steps:
The first step, centered by crackle, polish groove along the trend of crackle; Direction along vertical with groove, mills out some grooves at a certain distance; Wherein, groove depth 35mm, gash depth 12mm, trench length is 15mm;
Second step, the Dian Wei center of circle, initial sum ultimate position with crackle drills through open-work respectively, and aperture is 10mm;
The 3rd step, adopts the built-up welding in groove of chromium nickel stainless steel welding rod, and built-up welding is highly 20mm; In welding process, every weldering one deck, knocks and removes welding slag, coating;
The 4th step, is preheated to 750 degree by flywheel, pours into a mould molten state nickel-cobalt-molybdenum-manganese-base alloy in the remaining space of penetrating hole and groove;
The 5th step, removes unnecessary resurfacing welding material and mould material processing, until size is qualified.
Through the flywheel of repairing treatment, through reusing 3 years, without new crackle, produce.
Embodiment 3
Flywheel material is casting pig, and running through is crackle, its crack depth 30mm, the about 220mm of crack length;
Method for repairing and mending comprises the following steps:
The first step, centered by crackle, polish respectively groove along the trend of crackle in the upper and lower surface of flywheel; Direction along vertical with groove, mills out some grooves at a certain distance; Wherein, top and bottom groove depth is 15mm, and top and bottom gash depth is 10m, and trench length is 30mm;
Second step, the starting point of crackle of take drills through open-work as the center of circle, and aperture is 10mm;
The 3rd step, adopts the built-up welding in groove of chromium nickel stainless steel welding rod, and built-up welding is highly 8mm; In welding process, every weldering one deck, knocks and removes welding slag, coating;
The 4th step, is preheated to 780 degree by flywheel, pours into a mould molten state nickel-cobalt-molybdenum-manganese-base alloy in the remaining space of penetrating hole and groove;
The 5th step, removes unnecessary resurfacing welding material and mould material processing, until size is qualified.
Through the flywheel of repairing treatment, through reusing 2 years, without new crackle, produce.
In above-described embodiment 1-3, nickel-cobalt-molybdenum-manganese-base alloy used, the percentage by weight of its nickel, cobalt, molybdenum, manganese is 5-10 ︰ 3-5 ︰ 2-4 ︰ 15-20, surplus is iron.
Illustrate: the spacing aspect between trench length and groove is without specific (special) requirements, mainly with reference to the concrete condition of crackle, and after repairing, the factor of the required aspects such as safety factor that reach is selected.
Claims (3)
1. a flywheel Crack Repairing method, is characterized in that, comprises the following steps:
The first step, centered by crackle, polish groove along the trend of crackle;
Direction along vertical with groove, mills out some grooves at a certain distance, and the degree of depth of this groove is more than or equal to 1/3rd of described groove depth;
Second step, the Dian Wei center of circle, initial sum ultimate position with crackle drills through open-work respectively;
The 3rd step, adopts stainless steel electrode built-up welding in described groove, and built-up welding is highly 1/2nd to 2/3rds of groove depth; In welding process, every weldering one deck, knocks and removes welding slag, coating;
The 4th step, is preheated to 600-800 degree by flywheel, pours into a mould molten state alloy in the remaining space of penetrating hole and groove, cooling under room temperature;
Described alloy is nickel-cobalt-molybdenum-manganese-base alloy;
The 5th step, removes unnecessary resurfacing welding material and mould material processing, qualified to size.
2. flywheel Crack Repairing method according to claim 1, is characterized in that, described flywheel material is casting pig.
3. flywheel Crack Repairing method according to claim 1, is characterized in that, described stainless steel electrode is chromium nickel stainless steel welding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406182.2A CN104162761B (en) | 2014-08-18 | 2014-08-18 | flywheel crack repairing method |
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| CN201410406182.2A CN104162761B (en) | 2014-08-18 | 2014-08-18 | flywheel crack repairing method |
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| CN104162761A true CN104162761A (en) | 2014-11-26 |
| CN104162761B CN104162761B (en) | 2016-08-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290707A (en) * | 2015-12-04 | 2016-02-03 | 玉溪大红山矿业有限公司 | Repeatable repair method for impeller of agitation tank |
| WO2016111820A1 (en) * | 2015-01-05 | 2016-07-14 | Caterpillar Inc. | Method for remanufacturing flywheel |
| CN106925943A (en) * | 2017-04-06 | 2017-07-07 | 中交天津航道局有限公司 | A kind of restorative procedure of rich chromium cast iron material dredging pump impeller |
| CN107649827A (en) * | 2017-10-31 | 2018-02-02 | 徐家成 | The repair method of flywheel crackle |
| CN110640404A (en) * | 2019-09-24 | 2020-01-03 | 浙江中包派克奇包装有限公司 | Method for repairing fixed waist-round long slotted hole of slotting tool rest |
| CN110948176A (en) * | 2019-12-18 | 2020-04-03 | 建湖金洋科技有限公司 | Mould repairing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107088A (en) * | 1994-04-22 | 1995-08-23 | 国营二一一厂 | Cold-welding recovery method for thin wall of cast iron cylinder |
| CN1174772A (en) * | 1997-06-27 | 1998-03-04 | 重庆大学 | Technology for finishing surface defect on iron casting |
| US20020066770A1 (en) * | 2000-12-05 | 2002-06-06 | Siemens Westinghouse Power Corporation | Cold spray repair process |
| CN101053927A (en) * | 2006-04-13 | 2007-10-17 | 通用电气公司 | Method for welding superalloys |
| CN101357429A (en) * | 2007-08-03 | 2009-02-04 | 上海船厂船舶有限公司 | Welding repair method of iron casting |
| CN101602135A (en) * | 2009-07-24 | 2009-12-16 | 重庆建设摩托车股份有限公司 | Method with the carbon dioxide welding cast iron |
| CN101972913A (en) * | 2010-11-08 | 2011-02-16 | 常熟市普利擎汽车维修保养有限公司 | Process for repairing crack on engine oil pipeline of automobile cylinder body |
-
2014
- 2014-08-18 CN CN201410406182.2A patent/CN104162761B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107088A (en) * | 1994-04-22 | 1995-08-23 | 国营二一一厂 | Cold-welding recovery method for thin wall of cast iron cylinder |
| CN1174772A (en) * | 1997-06-27 | 1998-03-04 | 重庆大学 | Technology for finishing surface defect on iron casting |
| US20020066770A1 (en) * | 2000-12-05 | 2002-06-06 | Siemens Westinghouse Power Corporation | Cold spray repair process |
| CN101053927A (en) * | 2006-04-13 | 2007-10-17 | 通用电气公司 | Method for welding superalloys |
| CN101357429A (en) * | 2007-08-03 | 2009-02-04 | 上海船厂船舶有限公司 | Welding repair method of iron casting |
| CN101602135A (en) * | 2009-07-24 | 2009-12-16 | 重庆建设摩托车股份有限公司 | Method with the carbon dioxide welding cast iron |
| CN101972913A (en) * | 2010-11-08 | 2011-02-16 | 常熟市普利擎汽车维修保养有限公司 | Process for repairing crack on engine oil pipeline of automobile cylinder body |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016111820A1 (en) * | 2015-01-05 | 2016-07-14 | Caterpillar Inc. | Method for remanufacturing flywheel |
| US9670984B2 (en) | 2015-01-05 | 2017-06-06 | Caterpillar Inc. | Method for remanufacturing flywheel |
| CN105290707A (en) * | 2015-12-04 | 2016-02-03 | 玉溪大红山矿业有限公司 | Repeatable repair method for impeller of agitation tank |
| CN106925943A (en) * | 2017-04-06 | 2017-07-07 | 中交天津航道局有限公司 | A kind of restorative procedure of rich chromium cast iron material dredging pump impeller |
| CN107649827A (en) * | 2017-10-31 | 2018-02-02 | 徐家成 | The repair method of flywheel crackle |
| CN110640404A (en) * | 2019-09-24 | 2020-01-03 | 浙江中包派克奇包装有限公司 | Method for repairing fixed waist-round long slotted hole of slotting tool rest |
| CN110948176A (en) * | 2019-12-18 | 2020-04-03 | 建湖金洋科技有限公司 | Mould repairing method |
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| Publication number | Publication date |
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| CN104162761B (en) | 2016-08-24 |
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