CN106239026A - A kind of restorative procedure of chain nest abrasion sprocket wheel - Google Patents
A kind of restorative procedure of chain nest abrasion sprocket wheel Download PDFInfo
- Publication number
- CN106239026A CN106239026A CN201610695496.8A CN201610695496A CN106239026A CN 106239026 A CN106239026 A CN 106239026A CN 201610695496 A CN201610695496 A CN 201610695496A CN 106239026 A CN106239026 A CN 106239026A
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- China
- Prior art keywords
- sprocket wheel
- junction
- welded
- connecting hole
- abrasion
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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
Abstract
The invention discloses the restorative procedure of a kind of chain nest abrasion sprocket wheel, comprise the steps: step one, obtain sprocket sizes parameter and material；Step 2, chain nest to fray polish a smooth junction to be welded；In the lower section of junction center to be welded, offering a connecting hole, the axis of connecting hole is parallel with the axis of sprocket wheel, described connecting hole and junction UNICOM to be welded；Step 3, sprocket wheel is preheated to 300 400 DEG C and is incubated；Step 4, treat solder side and carry out repair welding, make the part after repair welding cover former chain nest part and reserve allowance；Step 5, repair welding part being carried out flaw detection, if occurring, defect uses carbon arc air gouging to be removed by defect part, and uses step 2 to repair to four pairs of defect parts；Step 6, make the mode that is machined into by repair welding partial contour process chaining nest size.Invention carries and makes repair welding part and sprocket body have good fusion character, by individually repairing of the gear teeth is avoided the whole sprocket wheel of replacing, is greatly saved cost.
Description
Technical field
The present invention relates to sprocket wheel recovery technique field, particularly to the restorative procedure of a kind of chain nest abrasion sprocket wheel.
Background technology
Chain conveyer is, by chain, the motion and power with the drive sprocket of special tooth profile are delivered to have special tooth
A kind of kind of drive of the driven sprocket of shape.Chain conveyer has many advantages, and compared with V belt translation, nonelastic slip and skidding are existing
As, average ratios is accurate, reliable operation, and efficiency is high；Transmission power is big, and overload capacity is strong, the transmission size under identical operating mode
Little；Required tensile force is little, acts on the pressure on axle little；Can at high temperature, humidity, many dirt, have in the adverse circumstances such as pollution and work.
Chain conveyer average ratios is accurate, and transmission efficiency is high, and axle base subject range is relatively big, can higher in temperature, humidity is bigger
Environment uses；But Chain conveyer typically can only be used as parallel between centers transmission, and the fluctuation of its instantaneous transmission ratio, and rotational noise is bigger.
Owing to chain link is rigidity, thus there is polygon effect, this kinetic characteristic makes chaindriven instantaneous transmission ratio change and draw
Play additional dynamic load and vibration, must take in when selecting Chain conveyer parameter.Chain conveyer be widely used in transportation, agricultural,
Light industry, mine, petrochemical industry and machine tool industry etc..
Sprocket wheel is vitals in chain-drive mechanism.Conveyer haulage chain is by chain wheel drive, and when sprocket wheel rotates, the gear teeth are successively
Engaging traction scraper chain to move continuously play conveying effect with chain link, sprocket shaft group still suffers from whole equipment the most at work
High pulling torque, bears pulsating load and additional load, working condition very severe.The gear teeth during using for a long time due to
In chain engagement process, there is certain stress effect, can make sprocket wheel socket that abrasion occurs.As the abrasion of sprocket member is not carried out
Repair, and more renew, this can cause the biggest waste undoubtedly.
Summary of the invention
The present invention has designed and developed the restorative procedure of a kind of chain nest abrasion sprocket wheel.Overcome existing recovery technique welding performance
And the defect worn no resistance, make repair welding rear section be connected with sprocket body the most firm.
The technical scheme that the present invention provides is:
The restorative procedure of a kind of chain nest abrasion sprocket wheel, comprises the steps:
Step one, acquisition sprocket sizes parameter and material；
Step 2, chain nest to fray are polished, and inwardly grind 1-2mm until exposing metallic luster, to grind one
Individual smooth junction to be welded, removes oxide skin, oil, water, corrosion and the dirt in this tape welding junction simultaneously；At junction center to be welded
The lower section at place, offers a connecting hole, and the axis of connecting hole is parallel with the axis of sprocket wheel, and described connecting hole joins with junction to be welded
Logical；
Step 3, sprocket wheel is preheated to 300-400 DEG C and is incubated；
Step 4, welding rod is preheating to 150-200 DEG C, after insulation 1-2h, welding rod is accessed in welding machine, and by welding current
It is set to 80-100A, treats solder side and carry out repair welding, make the part after repair welding cover former chain nest part and reserve allowance；
Step 5, repair welding part being carried out flaw detection, if occurring, defect uses carbon arc air gouging to be removed by defect part, and
Step 2 is used to repair to four pairs of defect parts；
Step 6, make the mode that is machined into by repair welding partial contour process chaining nest size.
Preferably, in step 2, described connecting hole is connected the width at place less than within connecting hole with junction to be welded
Breadth Maximum.
Preferably, described connecting hole is circular hole, and connecting hole and junction UNICOM to be welded, and i.e. connecting hole is in junction to be welded
Lower section be an arc length more than the arch of semicircle.
Preferably, in step 2, described connecting hole is trapezoidal hole, and the trapezoidal shorter end is connected with junction to be welded, ladder
The longer end of shape, is positioned at the lower section of junction to be welded.
Preferably, in step 4, the welding rod model of use is D212 welding rod.
Preferably, in step 5, flaw detection uses ultrasonic reflectoscope or magnetic powder flaw detector.
Preferably, in step 4, reserved allowance is 3-5mm.
The invention has the beneficial effects as follows: the restorative procedure of the chain nest abrasion sprocket wheel that the present invention provides, is repair welding part and chain
Wheel body has good fusion character, by individually repairing of the gear teeth is avoided the whole sprocket wheel of replacing, is greatly saved cost.
Chain nest can be made after repair welding of the present invention to have higher intensity and good wearability, greatly strengthen the service life of sprocket wheel.
Strengthen the bonding strength between repair welding part and sprocket body by arranging connecting hole, make between repair welding part and sprocket wheel essence not
Can ftracture separation.
Accompanying drawing explanation
Fig. 1 is the flow chart of the restorative procedure of chain nest of the present invention abrasion sprocket wheel.
Fig. 2 is chain nest worn chain wheel belt solder side structural representation of the present invention.
Fig. 3 is the structural representation that circular connecting hole offered by chain nest of the present invention abrasion sprocket wheel.
Fig. 4 is the structural representation that trapezoidal connecting hole offered by chain nest of the present invention abrasion sprocket wheel.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
As it is shown in figure 1, the invention provides the restorative procedure of a kind of chain nest abrasion sprocket wheel, if bag following steps:
Step one S110: obtain sprocket sizes parameter and material.
Can be according to the dimensional parameters of the acquisition of information sprocket wheels such as the model of sprocket wheel, drawing, including the profile of chain nest, in order to repair
Sprocket wheel after Fu can be combined dimensional requirement.Preferred as one, sprocket wheel ability after use for a long time under many circumstances
Occurring in that the abrasion of chain nest, cannot find the original drawing of sprocket wheel, this is accomplished by using the method for mapping to obtain sprocket wheel
The profile of chain nest.Three-coordinate instrument or projector generally can be used to measure a wear extent less, compare the most intact sprocket wheel
The size of chain nest, then this profile is carried out suitable correction, with the reference contours as chain nest.Obtain sprocket wheel material and
Process of thermal treatment, can be very helpful to our follow-up reparation.
Step 2 S120, chain nest to fray are polished.
Owing at chain nest, size is less, using abrasive machine or angle grinding machine to carry out polishing likely can insufficient space, it is difficult to
Carry out.In this case can use milling machine that chain nest is polished.As in figure 2 it is shown, during polishing, the chain nest face to wear and tear is as base
Standard, inwardly polishing 1-2mm and expose metallic luster, making the junction to be welded after polishing 210 is a smooth curved surface.Go simultaneously
Except oxide skin, oil, water, corrosion and dirt in this tape welding junction.
Preferred as one, below junction 210 to be welded, offer a connecting hole, the axis of connecting hole and the axle of sprocket wheel
Line is parallel, described connecting hole and junction UNICOM to be welded.And described connecting hole is connected the width located less than even with junction to be welded
Connect the Breadth Maximum within hole.By this set, after carrying out repair welding in connecting hole, due to connecting hole and junction phase to be welded
The width of connectivity part is little, and the part of this repair welding can not be taken out from connecting hole, therefore increases repair welding part with sprocket wheel originally
Bonding strength between body, relatively more resistant to abrasive wear at the chain nest after repair welding.
As it is shown on figure 3, in technique scheme, described connecting hole is circular hole 220, and connecting hole joins with junction to be welded
Logical, i.e. connecting hole is the arc length arch more than semicircle in the lower section of junction to be welded.
As shown in Figure 4, in another embodiment, described connecting hole is trapezoidal hole 230, and the trapezoidal shorter end is with to be welded
Face connects, and the trapezoidal longer end is positioned at the lower section of junction to be welded.
Step 3 S130, sprocket wheel is preheated to 300-400 DEG C and is incubated.
Owing to the material of sprocket wheel typically uses high-strength steel, its weldability is poor, there will be and the most significantly split during welding
Stricture of vagina is inclined to, and needs the most before welding to preheat at broken teeth, effectively reduces welding stress.Less for overall dimensions
Sprocket wheel entirety can be preheated by sprocket wheel, and for the bigger sprocket wheel of overall dimensions, can only preheat place to be welded, but needs
Ensureing certain heat range, the inside 30-50mm of solder side, preheating temperature is 300-400 DEG C.Preheating needs sprocket wheel after terminating
Carry out isothermal holding.
Step 4 S140, carry out repair welding.
The welding rod used during welding is D212 welding rod.D212 welding rod has that hardness is higher, wearability more preferably, speed of welding more
Hurry up, use cost is lower, the more preferable advantage of appearance molding.It is particularly well-suited to welding job amount and greatly and wearability is had requirements at the higher level
User.The present invention selects the D212 welding rod of a diameter of 3.2mm.
Need after choosing welding rod welding rod is preheated, welding rod is preheating to 150-200 DEG C, be incubated 1-2h.Need one
Secondary property pre-overabundant heat electrode, in order to follow-up use.Unpractical welding rod is incubated in needing to be placed on couveuse or calorstat, anti-
Only temperature declines.
During use, welding rod is accessed in welding machine, and welding current is set to 80-100A, treat solder side and carry out repair welding,
The part after repair welding is made to cover former chain nest part and reserve the allowance of 3-5mm；In whole welding process, need to use red
Temperature during welding is measured by outer temperature measurer, it is ensured that the temperature of sprocket wheel weld is consistently greater than 150 DEG C.
Step 5 S150, repair welding part is carried out flaw detection.
Repair welding part is carried out flaw detection, if occurring, defect uses carbon arc air gouging to be removed by defect part, and uses step
Rapid two to four pairs of defect parts are repaired.Flaw detection can use ultrasonic examination or magnetic powder flaw detector.Ultrasonic examination is profit
Penetrate the depths of metal material with ultrasonic energy, and when being entered another cross section by a cross section, the feature of reflection occurs in interface edge
Check a kind of method of part defect, when ultrasonic beam is passed to metal inside from piece surface by probe, run into defect and zero
There is echo during part bottom surface the most respectively, fluorescent screen is formed impulse waveform, judges defect according to these impulse waveforms
Position and size.Magnetic powder inspection utilizes the interaction of the stray field at workpiece, defect and magnetic powder, and it make use of steel product table
Face and near surface flaw (such as crackle, slag inclusion, hairline etc.) pcrmeability and the difference of iron and steel pcrmeability, after magnetization, these materials do not connect
The magnetic field at continuous place will occur distortion, and at forming part flux leakage, surface of the work creates stray field, thus attracts magnetic powder to be formed
The magnetism powder accumulation of fault location--magnetic trace, under suitable illumination condition, shows defective locations and shape, the heap to these magnetic powders
Amass and observed and explain, be achieved that magnetic powder inspection.
Step 6 S160, repair welding partial contour is processed.
Make the mode that is machined into by the size of repair welding partial contour processing chaining nest.Owing to chain nest part profile of tooth is complicated,
Nc program can be woven on horizontal digital-control machining center to be processed.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (7)
1. the restorative procedure of a chain nest abrasion sprocket wheel, it is characterised in that comprise the steps:
Step one, acquisition sprocket sizes parameter and material；
Step 2, chain nest to fray are polished, and inwardly grind 1-2mm until exposing metallic luster, put down grinding one
Sliding junction to be welded, removes oxide skin, oil, water, corrosion and the dirt in this tape welding junction simultaneously；In junction center to be welded
Lower section, offers a connecting hole, and the axis of connecting hole is parallel with the axis of sprocket wheel, described connecting hole and junction UNICOM to be welded；
Step 3, sprocket wheel is preheated to 300-400 DEG C and is incubated；
Step 4, welding rod is preheating to 150-200 DEG C, after insulation 1-2h, welding rod is accessed in welding machine, and welding current is arranged
For 80-100A, treat solder side and carry out repair welding, make the part after repair welding cover former chain nest part and reserve allowance；
Step 5, repair welding part being carried out flaw detection, if occurring, defect uses carbon arc air gouging to be removed by defect part, and uses
Step 2 is repaired to four pairs of defect parts；
Step 6, make the mode that is machined into by repair welding partial contour process chaining nest size.
The restorative procedure of chain nest the most according to claim 1 abrasion sprocket wheel, it is characterised in that in step 2, described connection
Hole is connected the width located less than the Breadth Maximum within connecting hole with junction to be welded.
The restorative procedure of chain nest the most according to claim 2 abrasion sprocket wheel, it is characterised in that described connecting hole is circular hole,
And connecting hole and junction UNICOM to be welded, i.e. connecting hole are the arc length arch more than semicircle in the lower section of junction to be welded.
The restorative procedure of chain nest the most according to claim 1 abrasion sprocket wheel, it is characterised in that in step 2, described connection
Hole is trapezoidal hole, and the trapezoidal shorter end is connected with junction to be welded, and the trapezoidal longer end is positioned at the lower section of junction to be welded.
The restorative procedure of chain nest the most according to claim 1 abrasion sprocket wheel, it is characterised in that in step 4, the weldering of use
Bar model is D212 welding rod.
The restorative procedure of chain nest the most according to claim 1 abrasion sprocket wheel, it is characterised in that in step 5, flaw detection
Use ultrasonic reflectoscope or magnetic powder flaw detector.
The restorative procedure of chain nest the most according to claim 1 abrasion sprocket wheel, it is characterised in that in step 4, reserved adds
Spare time, amount was 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695496.8A CN106239026A (en) | 2016-08-18 | 2016-08-18 | A kind of restorative procedure of chain nest abrasion sprocket wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695496.8A CN106239026A (en) | 2016-08-18 | 2016-08-18 | A kind of restorative procedure of chain nest abrasion sprocket wheel |
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| CN106239026A true CN106239026A (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610695496.8A Pending CN106239026A (en) | 2016-08-18 | 2016-08-18 | A kind of restorative procedure of chain nest abrasion sprocket wheel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222573A (en) * | 2020-10-20 | 2021-01-15 | 甘肃一安建设科技集团有限公司 | Welding method for weathering resistant steel Q500QENH |
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| US6376801B1 (en) * | 2000-10-12 | 2002-04-23 | General Electric Company | Gas turbine component refurbishment apparatus and repair method |
| CN102699616A (en) * | 2012-04-14 | 2012-10-03 | 山东能源机械集团有限公司 | Mining ring driving sprocket restorative method |
| CN102756235A (en) * | 2012-07-23 | 2012-10-31 | 苏州热工研究院有限公司 | Field welding repair method especially for larger and penetrating defects in steel casting with heavy wall thickness |
| CN104308451A (en) * | 2014-11-14 | 2015-01-28 | 北京中纬研科新材料有限公司 | Speed reducer bearing block repair method |
| CN104493422A (en) * | 2014-12-29 | 2015-04-08 | 北京钢研高纳科技股份有限公司 | Defect repair method of high-temperature alloy casting |
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2016
- 2016-08-18 CN CN201610695496.8A patent/CN106239026A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6376801B1 (en) * | 2000-10-12 | 2002-04-23 | General Electric Company | Gas turbine component refurbishment apparatus and repair method |
| CN102699616A (en) * | 2012-04-14 | 2012-10-03 | 山东能源机械集团有限公司 | Mining ring driving sprocket restorative method |
| CN102756235A (en) * | 2012-07-23 | 2012-10-31 | 苏州热工研究院有限公司 | Field welding repair method especially for larger and penetrating defects in steel casting with heavy wall thickness |
| CN104308451A (en) * | 2014-11-14 | 2015-01-28 | 北京中纬研科新材料有限公司 | Speed reducer bearing block repair method |
| CN104493422A (en) * | 2014-12-29 | 2015-04-08 | 北京钢研高纳科技股份有限公司 | Defect repair method of high-temperature alloy casting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222573A (en) * | 2020-10-20 | 2021-01-15 | 甘肃一安建设科技集团有限公司 | Welding method for weathering resistant steel Q500QENH |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |