CN106064286B - A kind of the broken teeth bracing means and method for repairing and mending of huge gear - Google Patents
A kind of the broken teeth bracing means and method for repairing and mending of huge gear Download PDFInfo
- Publication number
- CN106064286B CN106064286B CN201610660507.9A CN201610660507A CN106064286B CN 106064286 B CN106064286 B CN 106064286B CN 201610660507 A CN201610660507 A CN 201610660507A CN 106064286 B CN106064286 B CN 106064286B
- Authority
- CN
- China
- Prior art keywords
- gear
- repairing
- welding
- drilling
- mending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Gears, Cams (AREA)
Abstract
A kind of the broken teeth bracing means and method for repairing and mending of huge gear, the method for repairing and mending include the following steps：（1）Polishing；（2）Detection；（3）Drilling：At least three drillings are uniformly drilled in each tooth root repair surface of gear；（4）It reinforces：By metal bar, step is squeezed into interference respectively（3）In each drilling, one is welded into as the reinforcing rib for repairing gear internal, and by metal bar and gear；（5）Welding；（6）It restores.The invention also includes a kind of broken teeth bracing means of huge gear.One aspect of the present invention can greatly increase the tooth face hardness and stress intensity of gear, and then improve the service life of gear, and functional reliability is high；On the other hand, easy to operate, it is fast to repair speed, does not need to carry out post weld heat treatment, and then heavy losses caused by will not stopping over equipment for a long time due to shutdown, and greatly save cost, effectively improves economic benefit and social benefit.
Description
Technical field
The present invention relates to maintenance of equipment field, the broken teeth bracing means and method for repairing and mending of especially a kind of huge gear.
Background technique
Huge gear is mainly used for water conservancy and hydropower, mine, metallurgy and machinery industry, they the characteristics of be that diameter is big, load
Greatly, force-bearing situation is complicated, and lubrication state is poor, and working environment is severe, is often greatly shortened due to bonding abrasion and fatigue equivalent
Its service life.Some gears only because of flank of tooth sharpening or due to the fracture of individual teeth, fall tooth and result in scrapping for entire part, significantly
The utilization rate and working efficiency for reducing equipment can have a greatly reduced quality if handled after scrapping by steel scrap, not only cause the wave of material
Take, also loses a large number of expense.For example, by using the gear of large-scale ball crusher, diameter reaches 4m, 5.8 tons of weight, there is 196 teeth.
It is 500 yuan/t by steel scrap salvage value when it wears or after fracture failure, totally 2900 yuan.If repaired, restore to use function
Afterwards, price is 12000 yuan/t, altogether 69600 yuan of value, and the two differs 24 times.
Therefore it for this value height, more complicated huge gear, is broken suddenly in operation, if can quickly repair
It is multiple, and reach using technical requirements, it will to greatly save operating cost, and caused by equipment will not be stopped over for a long time due to shutdown
Heavy losses have biggish economic benefit and social benefit.
Summary of the invention
The purpose of the present invention is overcoming the above-mentioned insufficient of the prior art and to provide a kind of rehabilitation cost low, repair fireballing
The broken teeth bracing means and method for repairing and mending of huge gear, the gear after reparation can continue to using and guaranteeing certain use
Service life.
The technical scheme is that：
A kind of broken teeth method for repairing and mending of huge gear of the present invention, includes the following steps：
（1）Polishing：It polishes gear to be repaired, removes surface impurity, remove the impaired surface of a wound, until surface is exposed
Metallic luster；
（2）Detection：Internal carrying out flaw detection is carried out to each rack gear of gear, if it is detected that it is defective on rack gear, it removes,
Guarantee that each rack gear does not have internal flaw, the surface of a wound is made to expose metallic luster；
（3）Drilling：At least three drillings are uniformly drilled in each tooth root repair surface of gear；
（4）It reinforces：By metal bar, step is squeezed into interference respectively（3）In each drilling, as reparation gear internal
Reinforcing rib, and metal bar and gear are welded into one；
（5）Welding：Broken teeth is integrally welded with metal bar, and carrying out flaw detection is carried out to detecting qualification；Wherein, broken teeth can
To be the tooth being broken on the gear, it is also possible to another sleeve gear old tooth spare part in damaged condition；
（6）It restores：Profiling polishing and sharp processing on repairing the flank of tooth completed, reach original standard size.
Further, step（3）In, each tooth root repair surface in gear is uniformly drilled with 4-10 drilling.
Further, the diameter of the drilling is 10-15mm, depth 55-65mm.
Further, step（4）In, the length of the metal bar is 110-130mm, diameter 10-15mm.
Further, the metal bar is stainless steel bar.
Further, step（4）In, the top of the drilling offers to form the groove of weld seam between metal bar.
Further, step（5）In, the mode of the welding uses cold surface welding, and the surplus of welding is higher than the height of former rack gear.
Further, bottom welding is carried out using the welding manner of argon arc welding.
Further, welding material selects the Ni-based wlding of Ultra-low carbon.
A kind of broken teeth bracing means of huge gear of the present invention is laid in each tooth root repair surface of the gear
At least three drilling, drilling in be equipped with metal bar, metal bar and drilling be interference fitted and it is integrally welded, the length of metal bar is big
In the depth of drilling, the broken teeth of metal bar and gear beyond drilling is integrally welded.
Further, each tooth root repair surface of the gear is equipped with 4-10 drilling.
Further, the length of the metal bar is 2 times of drilling depth.
Further, the diameter of the drilling is 10-15mm, depth 55-65mm；The length of the metal bar is 110-
130mm, diameter 10-15mm.
Further, the top of the drilling offers convenient for forming the groove of weld seam between metal bar.
Further, the metal bar inclination is fixed, and the angle between metal bar and gear repair surface is in 60 ~ 85 °.
Beneficial effects of the present invention：
（1）Bar planting is carried out by using metal bar, the tooth face hardness and stress intensity of gear can be greatly increased, and then improve
The service life of gear, functional reliability are high；
（2）It is easy to operate, repair speed it is fast, do not need carry out post weld heat treatment, and then will not stop over for a long time equipment because
Shut down and caused by heavy losses；
（3）It does not need to handle after scrapping by steel scrap, that is, is not required to buy new gear and be replaced, greatly save cost, effectively
It improves the economic and social benefits.
Detailed description of the invention
Fig. 1 is the structural schematic diagram after bar planting of the embodiment of the present invention.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
As shown in Figure 1：A kind of broken teeth bracing means of huge gear is laid in each tooth root repair surface 11 of gear 1
There are at least three drillings, stainless steel bar 2, stainless steel bar 2 and drilling interference fit and integrally welded, stainless steel are equipped in drilling
The length of stick 2 is greater than the depth of drilling, and stainless steel bar 2 and the broken teeth of gear 1 beyond drilling are integrally welded.
The present invention is by squeezing into 2 interference of stainless steel bar in drilling, as the reinforcing rib repaired inside gear 1, simulation
Reinforcing bar in armored concrete, and welding are auxiliarily fixed, then the broken teeth gear 1 and stainless steel bar 2 coincide and weld, significantly
The tooth face hardness and stress intensity of gear 1 are increased, and then improves the service life of gear, save the cost.
The present invention will be specifically described by an embodiment below.
Inventor has a broken teeth in discovery denticle wheel housing, is when carrying out flank of tooth inspection to the large and small gear wheel of coal pulverizer
The specific location for promptly and accurately finding broken teeth takes turns the full degras of housing inner product by cleaning denticle, and checks small roller axle one by one
Tooth finds that a tooth is broken completely from its root immediately below small gear wheel, broken teeth length about 510mm.For emergency repair, intend utilizing object
The another set of old spare part of small gear wheel for collapsing tooth damage in money warehouse, the spare part have a tooth along facewidth direction defect, can be used as and promptly repair
Multiple spare part is replaced to small gear wheel is damaged.
1, situation is repaired：
The small gear wheel of coal pulverizer don't block failure, need repair process, resizing is about（It is maximum：Long * high * wide）420*60*50
Millimeter.
The gear material is 37SiMn2MoV, is the advanced quenched and tempered steel of middle carbon, the tune of heavy load is born for manufacturing big section
Matter part and surface hardening part, such as the gear shaft class of heavy-duty machinery.
2, selection of Welding：
Since 37SiMn2MoV material is in the case where interlayer temperature is greater than 1200 DEG C, it can be quickly converted to martensite steel,
And having strong hot cracking tendency, weld seam is also easy to produce fire check near the zone of influence.Before being welded according to normal welding reparation needs
The pre-heat treatment requires to carry out post weld heat treatment after per pass weld seam welding, and reparation difficulty is big, complex process, repair time
It is difficult to predict therefore, all block region recovery matrixes that collapse entirely are all made of cold surface welding form reparation to delayed crack after long and reparation.
3, welding equipment：
Arc spraying cold welding machine：Arc spraying cold-welding technique is a physical and chemical process, is based in gaseous environment
Metal ionization spray regime and the infiltration phenomenon of moment high arc temperature appearance, which occurs, in wlding makes metal ionize object to anode transfer
It forms new metallurgical bonding layer and establishes, be particularly suitable for mechanical damage and casting flaw sloppy heat Bead weld repair.Using electricity
Arc sprays cold-welding technique and carries out sloppy heat welding, the Ni-based wlding of ultralow carbon content is selected in material selection, under sloppy heat technique
It can ensure that metallurgical bonding, because of the control of interlayer temperature and the selection of welding material, it can be ensured that do not generate martensitic structure and protect
Demonstrate,prove welding quality.
4, welding material selects：
Select the Ni-based wlding of Ultra-low carbon, the trade mark：A1002,Z408.
Using above two welding material（And it is welded using bottom argon arc welding）, it is ensured that its center portion has preferable extend
Property, outside has stronger cracking resistance, can get ideal occlusal surface under the pressure of working face.
5, specific method for repairing and mending：
（1）It polishes gear 1 to be repaired, removes surface impurity, remove the impaired surface of a wound, until metal is exposed on surface
Gloss；
（2）Internal carrying out flaw detection is carried out to each rack gear 12 of gear 1, such as carries out coloring spy using dye penetrant inspection agent
Wound, if it is detected that it is defective on rack gear, it removes, guarantees that each rack gear 12 without internal flaw, makes the surface of a wound expose metallic luster,
If it was found that new defect, together repair process；For example, the present embodiment through to other flank of tooth polishing detection after, except this collapse tooth with
Outside, it was found that another adjacent rack gear also has crackle in root, needs to thoroughly remove and handle together；
（3）Two gear roots of damage with magnetic drill it is each uniformly to bore 8 diameters be 12mm, depth is the brill of 60mm
Hole；
（4）Bar planting is carried out with stainless steel bar 2 in each drilling described in step 3, bar planting depth is 60mm, takes drilling
Interference fit, opens up groove in drill tip, convenient for forming weld seam with bar planting, makes stainless steel bar 2 and substrate secured after welding
It is linked together；Wherein, the length of stainless steel bar 2 is 120mm, diameter 12mm, and stainless steel bar 2 and substrate have one after being welded and fixed
Angle between fixed inclination, with gear repair surface 11 is in preferably 80 °.Why the present embodiment designs stainless steel bar 2
It is because the shape of gear surface is involute, stainless steel bar tilts certain angle, stainless steel bar can be made to hold at inclined
By the power of more axial directions, stress is more reasonable.
（5）After bar planting, arc spraying cold welding machine is taken to carry out cold surface welding, welds parent metal and stainless steel bar 2,
Ensure securely to be linked together, and detects qualification through dye penetrant inspection；
（6）After all REPAIR WELDINGs, roughing is carried out through polishing welding seams appearance, it is ensured that after carrying out flaw detection is qualified, then determine
Program parameters are finished using the three-dimension numerical controlled lathe of Large CNC；
（7）Using resin reverse mould manual partial polishing chamfer machining complex to qualification.
（8）After all REPAIR WELDINGs and completion of processing, tooth face hardness after REPAIR WELDING and processing and defect detecting test are checked and accepted,
That is tooth face hardness HRC is 32-36；Interlayer and finished pigmented defect detecting test result：It is qualified.All repairs are completed, and investment makes
With.
On the one hand method for repairing and mending through this embodiment can greatly increase the tooth face hardness and stress intensity of gear 1, into
And the service life of gear is improved, functional reliability is high；On the other hand, the method for repairing and mending is easy to operate, and reparation speed is fast, is not required to
Post weld heat treatment is carried out, and then heavy losses caused by equipment will not be stopped over for a long time due to shutdown；Furthermore, it is not necessary that scrapping
It is handled afterwards by steel scrap, that is, is not required to buy new gear and be replaced, greatly save cost, effectively improve economic benefit and society's effect
Benefit.
Claims (4)
1. a kind of broken teeth method for repairing and mending of huge gear, which is characterized in that include the following steps：
（1）Polishing：It polishes gear to be repaired, removes surface impurity, remove the impaired surface of a wound, until metal is exposed on surface
Gloss；
（2）Detection：Internal carrying out flaw detection is carried out to each rack gear of gear, if it is detected that it is defective on rack gear, it removes, guarantees
Each rack gear does not have internal flaw, and the surface of a wound is made to expose metallic luster；
（3）Drilling：At least three drillings are uniformly drilled in each tooth root repair surface of gear；
（4）It reinforces：By metal bar, step is squeezed into interference respectively（3）In each drilling, as adding for reparation gear internal
Strengthening tendons, and metal bar and gear are welded into one；
（5）Welding：Broken teeth is integrally welded with metal bar, and carrying out flaw detection is carried out to detecting qualification；The mode of the welding
Using cold surface welding, the surplus of welding is higher than the height of former rack gear；Bottom welding is carried out using the welding manner of argon arc welding；Weld material
Material selects the Ni-based wlding of Ultra-low carbon；
（6）It restores：Profiling polishing and sharp processing on repairing the flank of tooth completed, reach original standard size.
2. the broken teeth method for repairing and mending of huge gear according to claim 1, which is characterized in that step（3）In, it is described in gear
Each tooth root repair surface be uniformly drilled with 4-10 drilling；Or the diameter of the drilling is 10-15mm, depth 55-65mm.
3. the broken teeth method for repairing and mending of huge gear according to claim 1 or claim 2, which is characterized in that step（4）In, the gold
The length for belonging to stick is 110-130mm, diameter 10-15mm；Or the metal bar is stainless steel bar.
4. the broken teeth method for repairing and mending of huge gear according to claim 1 or claim 2, which is characterized in that step（4）In, the brill
The top in hole offers to form the groove of weld seam between metal bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660507.9A CN106064286B (en) | 2016-08-12 | 2016-08-12 | A kind of the broken teeth bracing means and method for repairing and mending of huge gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660507.9A CN106064286B (en) | 2016-08-12 | 2016-08-12 | A kind of the broken teeth bracing means and method for repairing and mending of huge gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106064286A CN106064286A (en) | 2016-11-02 |
| CN106064286B true CN106064286B (en) | 2018-11-30 |
Family
ID=57207393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610660507.9A Active CN106064286B (en) | 2016-08-12 | 2016-08-12 | A kind of the broken teeth bracing means and method for repairing and mending of huge gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106064286B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555468B (en) * | 2018-04-25 | 2020-10-09 | 安徽马钢设备检修有限公司 | Online welding repair process for large straight gear |
| CN108547767A (en) * | 2018-05-28 | 2018-09-18 | 山西东睦华晟粉末冶金有限公司 | A kind of combined type cycloid rotor and preparation method thereof |
| CN109551167A (en) * | 2018-11-26 | 2019-04-02 | 阳泉煤业集团华越机械有限公司煤机装备研究院 | A kind tooth reproduces gear restorative procedure |
| CN110735908A (en) * | 2019-10-29 | 2020-01-31 | 中交烟台环保疏浚有限公司 | Method for repairing broken gear |
| CN112589373A (en) * | 2020-12-04 | 2021-04-02 | 南京劲拓海洋工程装备有限公司 | Drilling platform gear shaft repairing method |
| CN112872706B (en) * | 2021-01-13 | 2023-03-31 | 武汉彤烨科技有限公司 | Rotary kiln riding wheel and wheel belt damage repairing method |
| CN112958996B (en) * | 2021-02-09 | 2022-09-23 | 北京建工土木工程有限公司 | Repairing method of gear ring for shield machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866585B1 (en) * | 2004-02-25 | 2006-05-12 | Diag Metal | METHOD AND DEVICE FOR THE REPAIR OF GEAR DENTURES |
| CN202251807U (en) * | 2011-09-09 | 2012-05-30 | 李大军 | Repairing structure for broken teeth of gear |
| CN102962629A (en) * | 2012-11-30 | 2013-03-13 | 太原重工股份有限公司 | Method for rapidly repairing gears |
| CN104028945A (en) * | 2014-06-19 | 2014-09-10 | 马钢(集团)控股有限公司 | Method for repairing broken cylindrical teeth of roller surfaces of high-pressure roller mills |
| CN104924017A (en) * | 2015-05-15 | 2015-09-23 | 潘洁萍 | Method for repairing damaged and broken mill roller shell teeth of sugar mill |
| CN205888480U (en) * | 2016-08-12 | 2017-01-18 | 华能湖南岳阳发电有限责任公司 | Broken teeth reinforcing apparatus of huge gear |
-
2016
- 2016-08-12 CN CN201610660507.9A patent/CN106064286B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866585B1 (en) * | 2004-02-25 | 2006-05-12 | Diag Metal | METHOD AND DEVICE FOR THE REPAIR OF GEAR DENTURES |
| CN202251807U (en) * | 2011-09-09 | 2012-05-30 | 李大军 | Repairing structure for broken teeth of gear |
| CN102962629A (en) * | 2012-11-30 | 2013-03-13 | 太原重工股份有限公司 | Method for rapidly repairing gears |
| CN104028945A (en) * | 2014-06-19 | 2014-09-10 | 马钢(集团)控股有限公司 | Method for repairing broken cylindrical teeth of roller surfaces of high-pressure roller mills |
| CN104924017A (en) * | 2015-05-15 | 2015-09-23 | 潘洁萍 | Method for repairing damaged and broken mill roller shell teeth of sugar mill |
| CN205888480U (en) * | 2016-08-12 | 2017-01-18 | 华能湖南岳阳发电有限责任公司 | Broken teeth reinforcing apparatus of huge gear |
Non-Patent Citations (2)
| Title |
|---|
| 冶金重载齿轮的修复技术;张鲁松等;《湖南冶金》;20040528;第32卷(第1期);41-42 * |
| 机械压力机齿轮断齿修复法—快速镶齿法;恒小朋;《锻压装备与制造技术》;20121231(第6期);56-57 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106064286A (en) | 2016-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106064286B (en) | A kind of the broken teeth bracing means and method for repairing and mending of huge gear | |
| CN109468634B (en) | Process method for recovering precision of rolling mill step pad by laser cladding technology | |
| CN103084703B (en) | A kind of large-scale interior empty steel-casting mends built-up welding reproducing method by replacing a damaged part | |
| CN103706921A (en) | Build up welding repair method of supporting roller of hot continuous rolling finishing mill | |
| CN103817484B (en) | Restoring method used for single-tooth roller crushing mechanism of sintering machine | |
| CN105665898B (en) | A kind of pearlitic heat resistant steel composite board Lincoln weld welding method | |
| CN107598351B (en) | Large-area plasma surfacing method for outer circle of Stellite cobalt-based alloy | |
| CN104858555A (en) | Pressure pipeline welding process | |
| CN102658417B (en) | Welding repair technology of casting defect of high-chromium cast iron | |
| CN104625650A (en) | Manufacturing technology for runner of impulse turbine | |
| CN102974916A (en) | High-pressure (HP) series grinding roller open arc surfacing anti-dropping welding method | |
| CN101138819A (en) | High-hardness high carbon alloy hammered steel roll set composite manufacturing technology | |
| CN108637588A (en) | A kind of restorative procedure of expansion-exsiccation machine helical blade | |
| CN105171330B (en) | Chilling ring of gasifying furnace restorative procedure | |
| CN205888480U (en) | Broken teeth reinforcing apparatus of huge gear | |
| CN101307676A (en) | Renewed superhigh intensity distortion-resistant anti-corrosive oil well pipe and its process | |
| CN107419262A (en) | Universal express pump gear shaft terminal odontotripsis or crackle laser melting coating restorative procedure | |
| CN102284826B (en) | Repair process for cavitation corrosion of runner chamber of through-flow type water turbine | |
| CN106312438A (en) | Overhaul process for sealing surface of valve | |
| CN112496670A (en) | Non-welding repair process for casting cracks | |
| CN105583543A (en) | Repairing method for R roots of gear spindle sleeve | |
| CN105349992B (en) | It is a kind of to be directed to aircraft vertical pin, the laser melting coating restorative procedure of bolt piece surface | |
| CN104191154A (en) | Repairing method for breakage of boosting compensating crank arm of Boomer-series tunneling trolley | |
| CN106964872A (en) | A kind of manual electric arc welding SMAW deep hole overlaying methods | |
| Bołoz et al. | Conical Pick Production Process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |