CN107354458B - Core disk restorative procedure under a kind of railway freight-car - Google Patents
Core disk restorative procedure under a kind of railway freight-car Download PDFInfo
- Publication number
- CN107354458B CN107354458B CN201710636823.7A CN201710636823A CN107354458B CN 107354458 B CN107354458 B CN 107354458B CN 201710636823 A CN201710636823 A CN 201710636823A CN 107354458 B CN107354458 B CN 107354458B
- Authority
- CN
- China
- Prior art keywords
- core disk
- railway freight
- wear
- car
- restorative procedure
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses core disk restorative procedures under a kind of railway freight-car, belong to railway freight-car core disk maintenance technique field.Core disk restorative procedure under railway freight-car of the invention, it is repaired using bottom of the laser melting and coating technique to lower core disk cannular boss inner surface, groove is formed in obtained lower core disk, it not only can be with lubricant storage, reduce the coefficient of friction between contact surface, and can help to the discharge of dust particles, reduce the abrasion to upper and lower core disk；Using wearability, the high and lower special Ni-based alloy of hardness can improve the service life of upper and lower core disk as repair materials simultaneously, reduce the frequency of maintenance and cost of core disk, improve the operational efficiency of railway freight-car, increase economic benefit and social benefit.
Description
Technical field
The present invention relates to railway freight-car core disk recovery technique fields, more specifically to core disk under a kind of railway freight-car
Restorative procedure.
Background technique
Cargo transport is the important component of railway transportation, and usually the vehicle that carrying cargo is used on railway is referred to as
Railway freight-car.Railway freight-car is mainly made of car body and bogie two parts, and as the important component of both connections, core disk is by upper
Core disk and lower core disk composition.Wherein, upper core disk is connected to car body, and lower core disk is connected to bogie, and upper and lower core disk is connected by centrepin
It connects, pairing uses, and is as shown in Figure 1 the simplified structure diagram of bogie, bogie includes framework 1, bolster 2, lower core disk 3 and wheel
4, across being set on framework 1, lower core disk 3 is then arranged on bolster 2 bolster 2.Core disk is vertically carried in addition to supporting and transmitting car body
Outside lotus, when curve passing through when driving, upper and lower core disk can relatively rotate, to guarantee the safe operation of vehicle.
Usually upper core disk has central boss, and lower core disk has medium altitude groove, and the boss of upper core disk may fitted to lower core disk
Groove in, be illustrated in figure 2 the common lower core dish structure figure with medium altitude groove.Since active force is very big between core disk, and upper,
Exist between lower core disk and relatively rotate, therefore upper and lower core disk contact surface is easily worn；In addition in the operation of vehicle, manufacture and inspection
During repairing, inevitable sand and dust, scale crust, rainwater, derusting steel sand etc. pass through in gap or upper core disk between upper and lower core disk
Heart hole enters lower core disk, to be further exacerbated by the abrasion of core disk, corrosion, reduces the service life of core disk and the fortune of vehicle
Row quality.It is mainly replaceable or recoverable wear-resisting by being arranged between upper and lower core disk in the prior art for this problem
Liner or Wear resistance disk reduce the abrasion of upper and lower core disk；However since the replacement of these wear-resistant materials, reparation are more frequent, and
And maintenance not only needs to expend a large amount of manpower every time, while needing to enable large-scale hanging device, thus increase maintenance at
This, also affects the normal use of vehicle, reduces economic benefit and social benefit.
Pass through patent retrieval, Chinese Patent Application No.: CN99229827.X, the applying date: on November 1st, 1999, invention wound
Make title are as follows: core disk under railway freight-car complex abrasion-proof, this application discloses under a kind of NEW TYPE OF COMPOSITE applied to railway freight-car
Core disk, the lower core disk are made of the intracorporal unworn liner of basin that normal steel casting ontology and one are mounted on lower core disk, unworn liner
Material be austempering ductile iron, unworn liner is thin wall cylindrical dish type, and center closely connected with basin body bottom surface of trying to get to the heart of a matter has
There is hole, the column face of unworn liner and the column face of basin body are in press load.This application can improve the stress shape of upper and lower core disk
Condition improves the wearability and service life of upper and lower core disk；But disadvantage is that the friction between core disk and unworn liner
Still larger, and the dust fallen into inside unworn liner is not easy to be discharged, and also be easy to cause the mill of upper and lower core disk and unworn liner
Damage, and then bring a series of maintenance and installation problem.
In addition, Chinese Patent Application No.: 201120452833.3, the applying date: on November 15th, 2011, invention and created name
Are as follows: bogie and lorry, the bogie of this application have upper core disk, lower core disk and are arranged between upper core disk and lower core disk
Core disk abrasion disc, the first gap is formed between upper core disk and core disk abrasion disc, is formed between lower core disk and core disk abrasion disc
There is the second gap, core disk dirt-proof boot is wherein also equipped on bogie, core disk dirt-proof boot has dirt-proof boot ontology, dirt-proof boot ontology
On offer that interconnected first is open and second is open, the first opening closely surrounds on core disk, and second is open for holding
The lower core disk and core disk abrasion disc are set, is coated on dirt-proof boot ontology on the outside of lower core disk and core disk abrasion disc, to cover first
Gap and the second gap.This application, can be with blocking portion by the way that core disk dirt-proof boot to be coated on to the outside of upper core disk and lower core disk
Dust and particulate matter is divided to enter in gap, to reduce the abrasion of upper and lower core disk and core disk abrasion disc；But its shortcoming
It is, addition and lubricant storage are not easy between upper and lower core disk and core disk abrasion disc, and the coefficient of friction between contact surface is larger, mill
It is more serious to damage situation.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the upper and lower core disk of railway freight-car to be in the prior art prone to wear, maintenance cost is high
Deficiency, provide core disk restorative procedure under a kind of railway freight-car, can not only be stored in the lower core disk that the present invention repairs
Lubricant reduces the coefficient of friction between contact surface, and can help to the discharge of dust particles, reduces the mill to upper and lower core disk
Damage；Using wearability height and the lower special Ni-based alloy of hardness is as repair materials, can improve the use of upper and lower core disk simultaneously
Service life reduces the maintenance frequency and cost of core disk.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
Core disk restorative procedure under a kind of railway freight-car of the invention, comprising the following steps:
Step 1: polishing or machining mode remove splitting for the cannular boss inner surface bottom of lower core disk to be repaired by hand
Then line and fatigue layer carry out ultrasonic wave and dye penetrant inspection；
Step 2: the bottom to cannular boss inner surface carries out the pre-heat treatment；
Step 3: carrying out cladding using bottom of the horizontal laser beam of carbon dioxide to cannular boss inner surface, molten bath is carried out
Inert gas shielding, using Co-based alloy powder cladding powder feeding, laser power selects 3.6~4.3KW, and scanning speed 360~
450mm/min, spot diameter are 3~5mm, and scanning mode is overlap joint scanning, and overlapping rate is 35%~55%, through multiple cladding,
Make 2~3mm of cladding layer overall thickness；
Step 4: being air-cooled to room temperature after the completion of cladding.
As further improvement of the present invention, the cladding layer is wear-resisting protrusion, shape between adjacent two wear-resisting protrusion
At groove.
As further improvement of the present invention, the preheating temperature of the cannular boss inner surface bottom is 150~300
℃。
As further improvement of the present invention, the Co-based alloy powder by weight percentage, respectively at being grouped as
Are as follows: C 0.1~0.17%, Si 0.5~0.9%, B 0.4~1.2%, Fe 0.3~0.6%, Cr 12~18%, Mo 13~
17%, Co 1.2~2.4%, W 2.1~3.4%, surplus Ni.
As further improvement of the present invention, the granularity of the Co-based alloy powder is 150~300 mesh.
As further improvement of the present invention, the inert gas is argon gas, and the cladding powder feeding is using argon gas
Airborne dedicated powder feeder is protected to send powder into laser molten pool.
As further improvement of the present invention, the cross sectional shape of the wear-resisting protrusion is that arch, semicircle or rule are more
Side shape, and wear-resisting height of projection is less than the height of cannular boss.
As further improvement of the present invention, the wear-resisting protrusion in the shape of a spiral or is sent out centered on central shaft hole
Bulk distribution.
As further improvement of the present invention, described is wear-resisting raised centered on central shaft hole, rounded helical form,
Square spiral shape or diamond shape spiral distribution.
As further improvement of the present invention, described is wear-resisting raised centered on central shaft hole, helically divergent shape
Distribution.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) core disk restorative procedure under a kind of railway freight-car of the invention, and hardness lower special nickel high using wearability
Material of the based alloy as cladding layer, and mutually tied the bottom of itself and lower core disk cannular boss inner surface using laser cladding method
It closes, this method can enhance the wearability of the lower core disk after repairing, and prolong its service life, and the lower core disk after reparation, to upper
The abrasion of core disk is smaller, therefore can improve the service life of core disk simultaneously；
(2) core disk restorative procedure under a kind of railway freight-car of the invention, the lower core disk cannular boss inner surface repaired
The cladding layer of bottom is wear-resisting protrusion, forms groove between adjacent two wear-resisting protrusion, in groove can lubricant storage, thus not
It only can reduce the coefficient of friction between upper and lower core disk contact surface, and when mutually rotation occurs for upper and lower core disk, can also promote
The lubricant in groove is set, to flowing, to facilitate the discharge of dust particles along slot, reduce the abrasion to upper and lower core disk；
(3) core disk restorative procedure under a kind of railway freight-car of the invention, the wear-resisting protrusion repaired are with central shaft hole
Center, in the shape of a spiral or divergent shape is distributed, when mutually rotation occurs for upper and lower core disk, the structure distribution side of above-mentioned wear-resisting protrusion
Formula not only facilitates lubricant and flows in the trench, promote core disk in dust particles discharge, and make core disk with it is wear-resisting
The contact surface even wearing of protrusion, avoids the occurrence of excessive wear region, improves the service life of core disk；
(4) core disk restorative procedure under a kind of railway freight-car of the invention, through multiple cladding, the overall thickness of cladding layer is 2~
3mm can not only increase the safety that upper core disk and lower core disk are engaged instead of the biggish common core mill consumption material of thickness
Property and stability, and a large amount of core mill consumption material can be saved；
(5) core disk restorative procedure under a kind of railway freight-car of the invention, the preheating temperature of cannular boss inner surface bottom are
150~300 DEG C, in the preheating temperature section, it is ensured that bond strength with higher between cladding layer and central boss is not easy
It cracks, and then guarantees that the lower core disk after repairing has longer service life；
(6) core disk restorative procedure under a kind of railway freight-car of the invention, can reduce the mill of upper and lower core disk simultaneously after reparation
Damage reduces the frequency of maintenance and cost of core disk, improves the operational efficiency of railway freight-car, increases economic benefit and social benefit；
Detailed description of the invention
Fig. 1 is the simplified structure diagram of railway goods train bogie；
Fig. 2 is common lower core dish structure schematic diagram；
Fig. 3 is the lower core dish structure schematic diagram for the wear-resisting rounded spiral distribution of protrusion that present invention reparation obtains；
Fig. 4 is that the obtained wear-resisting protrusion of present invention reparation is square the lower core dish structure schematic diagram of spiral distribution；
Fig. 5 is the wear-resisting protrusion lower core dish structure schematic diagram that helically divergent shape is distributed that present invention reparation obtains.
Label declaration in schematic diagram:
1, framework；2, bolster；3, lower core disk；4, wheel；5, chassis；6, cannular boss；7, central shaft hole；8, riveted holes；
9, wear-resisting protrusion.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Core disk restorative procedure under a kind of railway freight-car of the present embodiment, comprising the following steps:
Step 1: removing the crackle and fatigue of the 6 inner surface bottom of cannular boss of lower core disk to be repaired with machining mode
Then layer carries out ultrasonic wave and dye penetrant inspection；
Step 2: the bottom to 6 inner surface of cannular boss carries out the pre-heat treatment；
Step 3: carrying out cladding using bottom of the horizontal laser beam of carbon dioxide to 6 inner surface of cannular boss, molten bath is carried out
Inert gas shielding, using Co-based alloy powder cladding powder feeding, laser power selects 3.6KW, scanning speed 360mm/min, light
Spot diameter is 3mm, and scanning mode is overlap joint scanning, and overlapping rate 35%, cladding layer is with a thickness of 0.4mm, through multiple cladding, cladding
Layer overall thickness is 2mm；
Step 4: being air-cooled to room temperature after the completion of cladding.
In the present embodiment, the preheating temperature of 6 inner surface bottom of cannular boss is 150 DEG C, which can guarantee to melt
Bond strength with higher between coating and central boss 6, is not likely to produce crackle, so guarantee the lower core disk after repairing have compared with
Long service life.
The granularity of Co-based alloy powder is 150 mesh, the Co-based alloy powder by weight percentage, respectively at being grouped as are as follows: C
0.1%, Si 0.6%, B 0.7%, Fe 0.4%, Cr 12.0%, Mo 13.0%, Co 1.2%, W 2.1%, surplus are
Ni；This kind of nickel-base alloy has the characteristics that wearability is high and hardness is lower, can not only enhance the wearability of the lower core disk after repairing,
It prolongs its service life, and the lower core disk after reparation, it is smaller to the abrasion of upper core disk, therefore can improve simultaneously making for core disk
Use the service life.
The inert gas is argon gas, and the cladding powder feeding is to protect airborne dedicated powder feeder to send powder using argon gas
Into laser molten pool.
The cladding layer is wear-resisting raised 9, forms groove between adjacent two wear-resisting raised 9, can store profit in groove
Thus lubrication prescription not only can reduce the coefficient of friction between upper and lower core disk contact surface, but also when mutually rotation occurs for upper and lower core disk
When, the lubricant in groove can also be promoted, to flowing, to facilitate the discharge of dust particles along slot, reduce to upper and lower core disk
Abrasion.In the present embodiment, wear-resisting raised 9 cross sectional shape is arch, which is 2mm, less than the height of cannular boss 6
Degree；Instead of the biggish common core mill consumption material of thickness, it can not only increase the safety that upper core disk and lower core disk are engaged
Property and stability, and a large amount of core mill consumption material can be saved.Wear-resisting raised 9 planar structure is distributed as, with center
Centered on axis hole 7, rounded spiral distribution, as shown in Figure 3；When mutually rotation occurs for upper and lower core disk, will drive in groove
Lubricant along slot to flowing, promote the discharge of dust particles in core disk, and structure design enable to core disk with it is resistance to
The surface abrasion that mill protrusion 9 is in contact is more uniform, can avoid excessive wear area occur, improves the service life of core disk.
Embodiment 2
Core disk restorative procedure under a kind of railway freight-car of the present embodiment, comprising the following steps:
Step 1: manual grinding removes the crackle and fatigue layer of the 6 inner surface bottom of cannular boss of lower core disk to be repaired, so
Ultrasonic wave and dye penetrant inspection are carried out afterwards；
Step 2: the bottom to 6 inner surface of cannular boss carries out the pre-heat treatment；
Step 3: carrying out cladding using bottom of the horizontal laser beam of carbon dioxide to 6 inner surface of cannular boss, molten bath is carried out
Inert gas shielding, using Co-based alloy powder cladding powder feeding, laser power selects 4.0KW, scanning speed 400mm/min, light
Spot diameter is 4mm, and scanning mode is overlap joint scanning, and overlapping rate 45%, cladding layer is with a thickness of 0.5mm, through multiple cladding, cladding
Layer overall thickness is 2.5mm；
Step 4: being air-cooled to room temperature after the completion of cladding.
In the present embodiment, the preheating temperature of 6 inner surface bottom of cannular boss is 250 DEG C, which can guarantee to melt
Bond strength with higher between coating and central boss 6, is not likely to produce crackle, so guarantee the lower core disk after repairing have compared with
Long service life.
The granularity of Co-based alloy powder is 180 mesh, the Co-based alloy powder by weight percentage, respectively at being grouped as are as follows: C
0.17%, Si 0.9%, B 1.2%, Fe 0.6%, Cr 18%, Mo 17%, Co 2.4%, W 3.4%, surplus Ni；It should
Kind nickel-base alloy has the characteristics that wearability is high and hardness is lower, can not only enhance the wearability of the lower core disk after repairing, and extends
Its service life, and the lower core disk after reparation, it is smaller to the abrasion of upper core disk, therefore the use longevity of core disk can be improved simultaneously
Life.
The inert gas is argon gas, and the cladding powder feeding is to protect airborne dedicated powder feeder to send powder using argon gas
Into laser molten pool.
The cladding layer is wear-resisting raised 9, forms groove between adjacent two wear-resisting raised 9, can store profit in groove
Thus lubrication prescription not only can reduce the coefficient of friction between upper and lower core disk contact surface, but also when mutually rotation occurs for upper and lower core disk
When, the lubricant in groove can also be promoted, to flowing, to facilitate the discharge of dust particles along slot, reduce to upper and lower core disk
Abrasion.In the present embodiment, wear-resisting raised 9 cross sectional shape be it is trapezoidal, the trapezoidal height be 2.5mm, less than cannular boss 6
Highly；Instead of the biggish common core mill consumption material of thickness, it can not only increase the peace that upper core disk and lower core disk are engaged
Full property and stability, and a large amount of core mill consumption material can be saved.Wear-resisting raised 9 planar structure is distributed as, in
Centered on arbor hole 7, be square spiral distribution, as shown in Figure 4；When mutually rotation occurs for upper and lower core disk, groove will be driven
Interior lubricant to flowing, promotes the discharge of dust particles in core disk along slot, and structure design enable to core disk with
Wear-resisting raised 9 surface abrasions that are in contact are more uniform, can avoid excessive wear area occur, and improve core disk uses the longevity
Life.
Embodiment 3
Core disk restorative procedure under a kind of railway freight-car of the present embodiment, comprising the following steps:
Step 1: in the cannular boss 6 for removing lower core disk to be repaired in such a way that machining and manual grinding combine
Then the crackle and fatigue layer of surface bottom portion carry out ultrasonic wave and dye penetrant inspection；
Step 2: the bottom to 6 inner surface of cannular boss carries out the pre-heat treatment；
Step 3: carrying out cladding using bottom of the horizontal laser beam of carbon dioxide to 6 inner surface of cannular boss, molten bath is carried out
Inert gas shielding, using Co-based alloy powder cladding powder feeding, laser power selects 4.3KW, scanning speed 450mm/min, light
Spot diameter is 5mm, and scanning mode is overlap joint scanning, and overlapping rate 55%, cladding layer is with a thickness of 0.6mm, through multiple cladding, cladding
Layer overall thickness is 3mm；
Step 4: being air-cooled to room temperature after the completion of cladding.
In the present embodiment, the preheating temperature of 6 inner surface bottom of cannular boss is 300 DEG C, which can guarantee to melt
Bond strength with higher between coating and central boss 6, is not likely to produce crackle, so guarantee the lower core disk after repairing have compared with
Long service life.
The granularity of Co-based alloy powder is 300 mesh, the Co-based alloy powder by weight percentage, respectively at being grouped as are as follows: C
0.12%, Si 0.5%, B 0.4%, Fe 0.3%, Cr 12%, Mo 13%, Co 1.2%, W 2.1%, surplus Ni；It should
Kind nickel-base alloy has the characteristics that wearability is high and hardness is lower, can not only enhance the wearability of the lower core disk after repairing, and extends
Its service life, and the lower core disk after reparation, it is smaller to the abrasion of upper core disk, therefore the use longevity of core disk can be improved simultaneously
Life.
The inert gas is argon gas, and the cladding powder feeding is to protect airborne dedicated powder feeder to send powder using argon gas
Into laser molten pool.
The cladding layer is wear-resisting raised 9, forms groove between adjacent two wear-resisting raised 9, can store profit in groove
Thus lubrication prescription not only can reduce the coefficient of friction between upper and lower core disk contact surface, but also when mutually rotation occurs for upper and lower core disk
When, the lubricant in groove can also be promoted, to flowing, to facilitate the discharge of dust particles along slot, reduce to upper and lower core disk
Abrasion.In the present embodiment, wear-resisting raised 9 cross sectional shape is rectangle, which is 3mm, is less than cannular boss 6
Height；Instead of the biggish common core mill consumption material of thickness, it can not only increase what upper core disk was engaged with lower core disk
Safety and stability, and a large amount of core mill consumption material can be saved.Wear-resisting raised 9 planar structure is distributed as, with
Centered on central shaft hole 7, helically divergent shape is distributed, as shown in Figure 5；When mutually rotation occurs for upper and lower core disk, ditch will be driven
Lubricant in slot, to flowing, promotes the discharge of dust particles in core disk, and structure design enables to core disk along slot
The surface abrasion being in contact with wear-resisting raised 9 is more uniform, can avoid excessive wear area occur, and improve core disk uses the longevity
Life.
Embodiment 4
Core disk restorative procedure under a kind of railway freight-car of the present embodiment, substantially with embodiment 1, the difference is that: this
Wear-resisting raised 9 cross sectional shape is isosceles trapezoid in embodiment, and wear-resisting raised 9 centered on central shaft hole 7, and assume diamond in shape helical form
Distribution, is not shown in the figure.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (8)
1. core disk restorative procedure under a kind of railway freight-car, which comprises the following steps:
Step 1: polishing or machining mode remove splitting for cannular boss (6) the inner surface bottom of lower core disk to be repaired by hand
Then line and fatigue layer carry out ultrasonic wave and dye penetrant inspection；
Step 2: the bottom to cannular boss (6) inner surface carries out the pre-heat treatment；
Step 3: carrying out cladding using bottom of the horizontal laser beam of carbon dioxide to cannular boss (6) inner surface, molten bath is carried out lazy
Property gas shield, using Co-based alloy powder cladding powder feeding, laser power selects 3.6~4.3KW, scanning speed 360~
450mm/min, spot diameter are 3~5mm, and scanning mode is overlap joint scanning, and overlapping rate is 35%~55%, through multiple cladding,
Make 2~3mm of cladding layer overall thickness；
Step 4: being air-cooled to room temperature after the completion of cladding；
Wherein, the cladding layer is wear-resisting raised (9), forms groove between adjacent two wear-resisting raised (9)；
The Co-based alloy powder by weight percentage, respectively at being grouped as are as follows: C 0.1~0.17%, Si 0.5~
0.9%, B 0.4~1.2%, Fe 0.3~0.6%, Cr 12~18%, Mo 13~17%, Co 1.2~2.4%, W 2.1
~3.4%, surplus Ni.
2. core disk restorative procedure under a kind of railway freight-car according to claim 1, it is characterised in that: the cannular boss
(6) preheating temperature of inner surface bottom is 150~300 DEG C.
3. core disk restorative procedure under a kind of railway freight-car according to claim 2, it is characterised in that: the nickel-base alloy
The granularity of powder is 150~300 mesh.
4. core disk restorative procedure under a kind of railway freight-car according to claim 3, it is characterised in that: the inert gas
For argon gas, the cladding powder feeding is to protect airborne dedicated powder feeder to send powder into laser molten pool using argon gas.
5. core disk restorative procedure under a kind of railway freight-car according to claim 4, it is characterised in that: the wear-resisting protrusion
(9) cross sectional shape is arch, semicircle or regular polygon, and the height of wear-resisting raised (9) is less than the height of cannular boss (6)
Degree.
6. core disk restorative procedure under a kind of railway freight-car according to claim 5, it is characterised in that: the wear-resisting protrusion
(9) centered on central shaft hole (7), in the shape of a spiral or divergent shape is distributed.
7. core disk restorative procedure under a kind of railway freight-car according to claim 6, it is characterised in that: the wear-resisting protrusion
(9) centered on central shaft hole (7), rounded helical form, square spiral shape or diamond shape spiral distribution.
8. core disk restorative procedure under a kind of railway freight-car according to claim 6, it is characterised in that: the wear-resisting protrusion
(9) centered on central shaft hole (7), helically divergent shape is distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636823.7A CN107354458B (en) | 2017-07-31 | 2017-07-31 | Core disk restorative procedure under a kind of railway freight-car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636823.7A CN107354458B (en) | 2017-07-31 | 2017-07-31 | Core disk restorative procedure under a kind of railway freight-car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107354458A CN107354458A (en) | 2017-11-17 |
| CN107354458B true CN107354458B (en) | 2019-07-12 |
Family
ID=60285563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710636823.7A Active CN107354458B (en) | 2017-07-31 | 2017-07-31 | Core disk restorative procedure under a kind of railway freight-car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107354458B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202400102U (en) * | 2011-12-10 | 2012-08-29 | 中铁隧道装备制造有限公司 | Core plate for tunnel locomotive |
| CN105270426A (en) * | 2014-07-24 | 2016-01-27 | 杨海龙 | Core disc structure for connecting locomotive and steering frame |
| KR101642280B1 (en) * | 2014-08-06 | 2016-07-25 | 한국철도기술연구원 | Railway Maintenance Apparatus and Method using Laser Cladding and Laser Profile Scanning |
| CN104178764A (en) * | 2014-08-26 | 2014-12-03 | 浙江瑞莱士机械有限公司 | High-hardness nickel-based alloy powder for laser cladding and preparation process thereof |
| CN105887082A (en) * | 2016-06-27 | 2016-08-24 | 芜湖三刀材料科技有限公司 | Nickel-based laser cladding coating and preparation method |
-
2017
- 2017-07-31 CN CN201710636823.7A patent/CN107354458B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107354458A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3452247B1 (en) | Field girth welding technology for high manganese steel slurry pipelines | |
| US8241761B2 (en) | Abrasion and impact resistant composite castings for working in condition of wear and high dynamic loads | |
| CN104878380B (en) | The laser remanufacturing and intensifying method of mine tram wheel pair | |
| CN105126959A (en) | Manufacturing method of detachable ceramic alloy composite grinding roller | |
| CN102220522B (en) | Cobalt-based alloy powder for laser remanufacturing of housing of rolling mill | |
| CN110846582A (en) | Squeeze roller sleeve in roller press and preparation method thereof | |
| CN103817484A (en) | Restoring method used for single-tooth roller crushing mechanism of sintering machine | |
| WO2017102637A1 (en) | Pallet car for the transport of bulk material for a thermal treatment | |
| CN107354458B (en) | Core disk restorative procedure under a kind of railway freight-car | |
| CN100417472C (en) | Antiwear lining plate with embedded hard alloy and its making process | |
| US10112200B2 (en) | Composite milling component | |
| CN101947717B (en) | Method for preparing composite worm or bearing bush | |
| CN207029191U (en) | Core disk under a kind of wear-resisting railway freight-car | |
| CN103212936B (en) | A kind of restorative procedure of single roll crusher | |
| Barnes et al. | Issues associated with welding and surfacing of large mobile mining equipment for use in oil sands applications | |
| CN107344559A (en) | Core disk and its manufacture method under a kind of wear-resisting railway freight-car | |
| CN102335805A (en) | Method for repairing flat-head cap without liner plate | |
| CN109112529A (en) | A kind of restorative procedure of milling train downstairs backing plate | |
| CN103192225B (en) | Metallurgical vehicle wheel set repairing method | |
| JP7410973B2 (en) | Welded parts for recycling railway wheels and method for recycling railway wheels using the same | |
| CN102785003B (en) | Method for overlaying iron-based surface composite material | |
| CN103089794A (en) | Wear resistant shaft | |
| CN206968505U (en) | It is provided with the mine self-discharging vehicle carriage of wear-resisting plate structure | |
| Saracoglu et al. | Fatigue analysis of girth gear of a rotary dryer | |
| CN219869119U (en) | Novel alloy wear-resisting beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191106 Address after: 243000 2155 Huxi South Road, Ma'anshan economic and Technological Development Zone, Anhui Province Patentee after: Anhui Yugong Laser Technology Co., Ltd Address before: 243000 Anhui city of Ma'anshan Province Economic and Technological Development Zone West Road No. 2155 Patentee before: ANHUI YUGONG ELECTRICAL AND MECHANICAL TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right |