CN101947712A - Mechanical transmission shaft repair method - Google Patents
Mechanical transmission shaft repair method Download PDFInfo
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- CN101947712A CN101947712A CN 201010280240 CN201010280240A CN101947712A CN 101947712 A CN101947712 A CN 101947712A CN 201010280240 CN201010280240 CN 201010280240 CN 201010280240 A CN201010280240 A CN 201010280240A CN 101947712 A CN101947712 A CN 101947712A
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Abstract
The invention discloses a mechanical transmission shaft repair method, which is implemented by a manual tungsten electrode argon arc welding method. The process comprises the steps of welding preparation, welding, inspecting and turning. The repair method of the invention utilizes manual tungsten electrode argon arc welding, and has the characteristics of high arc stability, high arc temperature, concentrated heat, narrow heat affecting area, small welding deformation and easily grasped operation technology. By putting a repaired transmission shaft back to production use for performing tracking and inspecting, the welding quality is proved to be good; a using effect which is the same as that of a new shaft can be achieved; aims of repairing the old and utilizing the waste are fulfilled; and therefore, the method is a very ideal repair method for a current power mechanical transmission shaft.
Description
Technical field: the invention belongs to the repair of machine technical scope, relate to a kind of mechanical drive shaft restorative procedure.
Background technology: mechanical drive shaft is in long-time use, and its faying face place is because macro-axis and bearing faying face material hardness is different; The heat treatment measure is bad in the production process; Cover in bearing runs; Reasons such as bearing lubrication is bad often cause the diameter of axle wear phenomenon to occur, so that influence the normal operation of equipment.In this case, must change or repair mechanical drive shaft.If adopt the method for changing, because the mechanical drive shaft production cost generally all than higher, can cause very big waste.Therefore the normal method of repairing that adopts.In the prior art, the reparation of mechanical drive shaft generally all is the method that adopts spraying.This method and technology difficulty is higher, and those of ordinary skill all is difficult to grasp, and is difficult to promote, and uses very not general.
Summary of the invention: the purpose of this invention is to provide a kind of new mechanical drive shaft restorative procedure, in order to overcome the above-mentioned drawback of existing in prior technology effectively.The objective of the invention is to connect with GTAW that the recovery technique scheme realizes, its welding procedure step is as follows:
(1) prepare before the weldering:
1/ cleans out the journal wearing place, makes it to present metallic luster;
2/ inspection is electric, whether gas circuit is unimpeded, and equipment and annex should be in good condition;
3/ checks whether the working site has ventilating duct, in order to avoid influence the argon shield molten bath;
4/ will be positioned on the lathe by the weldering diameter of axle;
(2) welding:
1/ employing ZX7-315ST inverter type welder is a power supply, and the positive polarity connection is utilized diameter 2.0mm tungsten electrode, and the tungsten electrode extension elongation is 5-8mm, nozzle diameter 12mm, not preheating before the weldering.Utilize the J50 type welding wire of diameter for 2.5mm, welding current 100-115A, arc voltage 22-26V, gas flow 10-12L/min, purity of argon is more than 99.99%;
2/ is emitted by suitable pressure and flow argon gas earlier by torch neck, make the weld zone form a gas shield cover, and the electric arc that ignites that then tungsten electrode contacted with weldment notices that torch neck should clean, and tungsten electrode should be sharp-pointed;
3/ adopts crescent moon swing welding manner, crosses the 5mm place weldering of 6 o'clock, is soldered to 12 o'clock place always, welds opposite side again, remains the axle center of tungsten electrode perpendicular to the diameter of axle, so that control molten bath size; In the welding process, the amplitude of fluctuation of welding gun, frequency and wire feed are wanted evenly, keep face of weld neat, the weld seam perfection; Tungsten electrode does not stretch out long, adds the welding wire action and wants steady, does not upset argon flow amount, and movement range should be little, and welding gun is done short stay during arc extinguishing above the molten bath, notes the argon shield molten bath, anti-oxidation;
Behind 4/ every continuous welding 2-3 weld seam road, stop welding once, when stopping to weld at every turn, open lathe and rotate, make the power transmission shaft uniform decrease in temperature, when waiting to be cooled to below 200 ℃, carry out welding next time again with cardinal principle 80r/pm speed; Postpone to the end of welding overall process;
After 5/ repair welding is all over, opens lathe once more and turn to macro-axis continuously with cardinal principle 80r/pm and reduce to normal temperature;
(3) power transmission shaft that will reduce to normal temperature carries out conventional Welding Testing, requires to carry out turning processing according to the power transmission shaft drawing then, to the standard size requirement that meets power transmission shaft.Promptly realize the reparation of mechanical drive shaft.
The restorative procedure of power transmission shaft of the present invention utilizes GTAW, and arc stability is good, the arc temperature height, and heat is concentrated, and the heat affected area is narrow, welding deformation is little, and operating technology is easy to grasp.Follow-up investigations through the power transmission shaft after repairing is carried out in putting into production use again, the proof welding quality is good, can obtain to reach the purpose of repairing the old and utilizing scraps with the same result of use of new axle, be a kind of very desirable restorative procedure that the current driving force mechanical drive shaft is repaired.
The specific embodiment:
Embodiment 1: connect the recovery technique scheme with GTAW, its welding procedure step is as follows:
(1) prepare before the weldering:
1/ cleans out the journal wearing place, makes it to present metallic luster;
2/ inspection is electric, whether gas circuit is unimpeded, and equipment and annex should be in good condition;
3/ checks whether the working site has ventilating duct, in order to avoid influence the argon shield molten bath;
4/ will radially be positioned on the lathe by the power transmission shaft that desire is repaired;
(2) welding:
1/ employing ZX7-315ST inverter type welder is a power supply, and the positive polarity connection is utilized diameter 2.0mm tungsten electrode, and the tungsten electrode extension elongation is 5mm, nozzle diameter 12mm, not preheating before the weldering.Utilize the J50 type welding wire of diameter for 2.5mm, welding current 100A, arc voltage 22V, gas flow 10L/min, purity of argon is more than 99.99%;
2/ is emitted by suitable pressure and flow argon gas earlier by torch neck, make the weld zone form a gas shield cover, and the electric arc that ignites that then tungsten electrode contacted with weldment notices that torch neck should clean, and tungsten electrode should be sharp-pointed;
3/ adopts crescent moon swing welding manner, crosses the 5mm place weldering of 6 o'clock, is soldered to 12 o'clock place always, welds opposite side again, remains the axle center of tungsten electrode perpendicular to the diameter of axle, so that control molten bath size; In the welding process, the amplitude of fluctuation of welding gun, frequency and wire feed are wanted evenly, keep face of weld neat, the weld seam perfection; Tungsten electrode does not stretch out long, adds the welding wire action and wants steady, does not upset argon flow amount, and movement range should be little, and welding gun is done short stay during arc extinguishing above the molten bath, notes the argon shield molten bath, anti-oxidation;
Behind 2 weld seam roads of 4/ every continuous welding, stop welding once, when stopping to weld at every turn, open lathe and rotate, make the power transmission shaft uniform decrease in temperature, when waiting to be cooled to below 200 ℃, carry out welding next time again with 80r/pm speed; Postpone to the end of welding overall process;
After 5/ repair welding is all over, opens lathe once more and turn to macro-axis continuously with 80r/pm and reduce to normal temperature;
(3) power transmission shaft that will reduce to normal temperature carries out conventional Welding Testing, requires to carry out turning processing according to the power transmission shaft drawing then, to the standard size requirement that meets power transmission shaft.Promptly realize the reparation of mechanical drive shaft.
Embodiment 2: according to embodiment 1, wherein tungsten electrode length is 8mm, welding current 115A, and arc voltage 26V, gas flow 12L/min, continuous welding weld seam road number is 3.
Claims (2)
1. the restorative procedure of a mechanical drive shaft is characterized in that it being the method that adopts GTAW to connect, and the processing step of welding is as follows:
(1) prepare before the weldering:
1/ cleans out the journal wearing place, makes it to present metallic luster;
2/ inspection is electric, whether gas circuit is unimpeded, and equipment and annex should be in good condition;
3/ checks whether the working site has ventilating duct, in order to avoid influence the argon shield molten bath;
4/ will be positioned on the lathe by the weldering diameter of axle;
(2) welding:
1/ employing ZX7-315ST inverter type welder is a power supply, and the positive polarity connection is utilized diameter 2.0mm tungsten electrode, and the tungsten electrode extension elongation is 5-8mm, nozzle diameter 12mm, not preheating before the weldering.Utilize the J50 type welding wire of diameter for 2.5mm, welding current 100-115A, arc voltage 22-26V, gas flow 10-12L/min, purity of argon is more than 99.99%;
2/ is emitted by suitable pressure and flow argon gas earlier by torch neck, make the weld zone form a gas shield cover, and the electric arc that ignites that then tungsten electrode contacted with weldment notices that torch neck should clean, and tungsten electrode should be sharp-pointed;
3/ adopts crescent moon swing welding manner, crosses the 5mm place weldering of 6 o'clock, is soldered to 12 o'clock place always, welds opposite side again, remains the axle center of tungsten electrode perpendicular to the diameter of axle, so that control molten bath size; In the welding process, the amplitude of fluctuation of welding gun, frequency and wire feed are wanted evenly, keep face of weld neat, the weld seam perfection; Tungsten electrode does not stretch out long, adds the welding wire action and wants steady, does not upset argon flow amount, and movement range should be little, and welding gun is done short stay during arc extinguishing above the molten bath, notes the argon shield molten bath, anti-oxidation;
Behind 4/ every continuous welding 2-3 weld seam road, stop welding once, when stopping to weld at every turn, open lathe and rotate, make the power transmission shaft uniform decrease in temperature, when waiting to be cooled to below 200 ℃, carry out welding next time again with cardinal principle 80r/pm speed; Postpone to the end of welding overall process;
After 5/ repair welding is all over, opens lathe once more and turn to macro-axis continuously with cardinal principle 80r/pm and reduce to normal temperature;
(3) power transmission shaft that will reduce to normal temperature carries out conventional Welding Testing, requires to carry out turning processing according to the power transmission shaft drawing then, to the standard size requirement that meets power transmission shaft.
2. according to the restorative procedure of the described mechanical drive shaft of claim 1, it is characterized in that said welding current is 105-110A, arc voltage 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102802403A CN101947712B (en) | 2010-09-08 | 2010-09-08 | Mechanical transmission shaft repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102802403A CN101947712B (en) | 2010-09-08 | 2010-09-08 | Mechanical transmission shaft repair method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101947712A true CN101947712A (en) | 2011-01-19 |
| CN101947712B CN101947712B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102802403A Expired - Fee Related CN101947712B (en) | 2010-09-08 | 2010-09-08 | Mechanical transmission shaft repair method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430889A (en) * | 2011-09-09 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for repairing crack and chipping of shunt ring of case |
| CN108620808A (en) * | 2018-05-09 | 2018-10-09 | 河南鑫轴传动机械有限公司 | A kind of transmission shaft injury repair technique |
| CN108673048A (en) * | 2018-05-17 | 2018-10-19 | 苏州罗克莱堆焊科技有限公司 | A kind of copper-tin alloy bead-welding technology |
| CN117840590A (en) * | 2024-03-07 | 2024-04-09 | 成都天成电科科技有限公司 | Method for protecting inner cavity chip during laser re-welding and laser re-welding system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1004165B (en) * | 1985-08-28 | 1989-05-10 | 伏尔日斯克小轿车联合公司 | Method for restoring camshaft |
| EP1731254A1 (en) * | 2005-06-09 | 2006-12-13 | MTU Aero Engines GmbH | Method of oscillating friction welding of workpieces with a closed groove on at leat one of the workpieces located near the welding zone |
| CN1915579A (en) * | 2006-09-07 | 2007-02-21 | 黄有光 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
| US20070114209A1 (en) * | 2005-11-23 | 2007-05-24 | Nolan John F | Method for fabricating a rotor shaft |
-
2010
- 2010-09-08 CN CN2010102802403A patent/CN101947712B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1004165B (en) * | 1985-08-28 | 1989-05-10 | 伏尔日斯克小轿车联合公司 | Method for restoring camshaft |
| EP1731254A1 (en) * | 2005-06-09 | 2006-12-13 | MTU Aero Engines GmbH | Method of oscillating friction welding of workpieces with a closed groove on at leat one of the workpieces located near the welding zone |
| US20070114209A1 (en) * | 2005-11-23 | 2007-05-24 | Nolan John F | Method for fabricating a rotor shaft |
| CN1915579A (en) * | 2006-09-07 | 2007-02-21 | 黄有光 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
Non-Patent Citations (1)
| Title |
|---|
| 《煤矿机械》 19920229 李志广 矿车绞车主传动轴的修复 , 第2期 2 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430889A (en) * | 2011-09-09 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for repairing crack and chipping of shunt ring of case |
| CN102430889B (en) * | 2011-09-09 | 2013-06-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for repairing crack and chipping of shunt ring of case |
| CN108620808A (en) * | 2018-05-09 | 2018-10-09 | 河南鑫轴传动机械有限公司 | A kind of transmission shaft injury repair technique |
| CN108673048A (en) * | 2018-05-17 | 2018-10-19 | 苏州罗克莱堆焊科技有限公司 | A kind of copper-tin alloy bead-welding technology |
| CN117840590A (en) * | 2024-03-07 | 2024-04-09 | 成都天成电科科技有限公司 | Method for protecting inner cavity chip during laser re-welding and laser re-welding system |
| CN117840590B (en) * | 2024-03-07 | 2024-06-04 | 成都天成电科科技有限公司 | Method for protecting inner cavity chip during laser re-welding and laser re-welding system |
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| Publication number | Publication date |
|---|---|
| CN101947712B (en) | 2012-08-15 |
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Granted publication date: 20120815 Termination date: 20130908 |