CN110193676A - A kind of welding bead-welding technology of diamond crossing track switch groove profile rail - Google Patents
A kind of welding bead-welding technology of diamond crossing track switch groove profile rail Download PDFInfo
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- CN110193676A CN110193676A CN201910535169.XA CN201910535169A CN110193676A CN 110193676 A CN110193676 A CN 110193676A CN 201910535169 A CN201910535169 A CN 201910535169A CN 110193676 A CN110193676 A CN 110193676A
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- welding
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Classifications
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of welding bead-welding technologies of diamond crossing track switch groove profile rail, relate to railway technology field；The following steps are included: Step 1: cleaning；Step 2: preheating；Step 3: built-up welding；Step 4: heat preservation；Step 5: post weld heat treatment；Step 6: polishing；The present invention reduces the space of track slot by being welded with overlay cladding on groove profile rail, is not required to the milling on stock rail and adds additional guard rail, can make vehicle can be with safety, simple process, easy to process, saving time.
Description
Technical field
The present invention relates to railway technology fields；, the welding heap welder of specially a kind of diamond crossing track switch groove profile rail
Skill.
Background technique
Construction energetically with each city in the whole nation to modern tram, existing Sanya domestic at present, Suzhou, Guangzhou,
A plurality of street railway is all built in the cities such as Huaian, Beijing, Shanghai.Important composition of the track as tramcar system
Part can play the role of protecting wheel, prevent vehicle since the flangeway on 60R2/59R2 groove profile rail inoperative side designs
Derailing；And at the frog of track switch, in order to enable vehicle with safety milling and is added additional on stock rail mostly
Guard rail, reduce the rail groove width of stock rail；However this technique processing complexity, and it is unfavorable for late maintaining after installing, it dismounts
It is inconvenient.
Summary of the invention
To solve at track switch frog, the idle space of track slot is unfavorable for vehicle driving, and guard rail processing is complicated, and maintenance is not
Just, the problems such as dismounting trouble, the present invention devises a kind of welding bead-welding technology of diamond crossing track switch groove profile rail.
A kind of welding bead-welding technology of diamond crossing track switch groove profile rail, comprising the following steps:
Step 1: cleaning: the region for needing built-up welding being polished clean, lustrous surface is without rust spot；
Step 2: preheating: carrying out the pre-heat treatment to rail before built-up welding；
Step 3: built-up welding: the overlay cladding that built-up welding obtains at least two layers of welding layer, first of welding bead of first layer welding layer
It is deposited in the track slot slot bottom of groove profile rail, the subsequent passes of first layer welding layer are successively along groove profile rail rail lip from the slot bottom of track slot to rail
It overflows the track slot by road built-up welding, last one of welding bead of first layer welding layer and is deposited in the top of the rail lip in the top of lip
End, and so on, the welding bead of upper one layer of welding layer is along this direction by road built-up welding；The welding bead of upper one layer of welding layer is shorter than next layer
The distance between the welding bead of welding layer, the end of the end of upper one layer of welding layer welding bead welding bead corresponding with next layer of welding layer
For 20~50mm, the last one welding bead of upper one layer of welding layer be covered on the last one welding bead of next layer of welding layer and not with
The top of the rail lip is in contact；All welding beads are mutually parallel；
Step 4: heat preservation: after welding, carrying out isothermal holding to welding region using asbestos；
Step 5: post weld heat treatment: carrying out tempering when overlay cladding temperature is down to 70~150 DEG C, refinement welding produces
Raw metallographic structure；Tempering time is 3~5 minutes, and tempering temperature is 225~450 DEG C；
Step 6: polishing: after heat treatment, carrying out grinding process, after polishing, the overlay surface light to the overlay cladding
Sliding, the both ends of the overlay cladding and the groove profile rail seamlessly transit, and after polishing, the overlay cladding is with a thickness of 8mm.
Preferably, the welding bead of upper one layer of welding layer is accumulated on two welding beads similar in the next layer of welding layer, and such as the
Second welding bead of two layers of welding layer is deposited on the first welding bead and the second welding bead of first layer welding layer.
Preferably, the first welding bead of upper one layer of welding layer is deposited in the slot bottom of the track slot and described next layer is welded
On first welding bead of layer.
Preferably, when preheating, preheated zone length is held always from built-up welding is extended down to 100~300mm outside；Built-up welding region preheating temperature
Degree is 150~350 DEG C, remaining region preheating temperature is 150~200 DEG C.
Preferably, the welding wire of built-up welding uses high-wearing feature welding wire.
Preferably, when built-up welding, first rail is placed horizontally on cushion block, so that overlaying surface is horizontal.
Preferably, before built-up welding, the groove profile track slot width is 36mm, after built-up welding polishing, at the overlay cladding, and the groove profile
The groove width of rail is 28mm.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention by being welded with overlay cladding on groove profile rail reduces the space of track slot, is not required on stock rail milling simultaneously
Additional guard rail is added, can make vehicle can be with safety, simple process, easy to process, saving time；
If after 2, abrasion occurs in overlay cladding, only scene is needed to carry out repair welding, it is not required to disassembly rail, it is easy to maintain.
Detailed description of the invention
Fig. 1 is the groove profile rail schematic diagram of heap postwelding of the invention；
Fig. 2 is overlay cladding schematic diagram of the invention；
Fig. 3 is overlay cladding weld path schematic diagrams of the invention；
Fig. 4 is the horizontal positioned figure of rail of the present invention.
Wherein, 1- groove profile rail, 2- overlay cladding, 3- cushion block.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
The drawings and specific embodiments, the present invention is further explained.
Embodiment
As shown in Figure 1 to Figure 3, the welding bead-welding technology of a kind of diamond crossing track switch groove profile rail, comprising the following steps:
Step 1: cleaning: the region for needing built-up welding being polished clean, lustrous surface is without rust spot；
Step 2: preheating: carrying out the pre-heat treatment to rail before built-up welding；
Step 3: built-up welding: the overlay cladding 2 that built-up welding obtains at least two layers of welding layer, first of weldering of first layer welding layer
Road is deposited in the track slot slot bottom of groove profile rail 1, and the subsequent passes of first layer welding layer are successively along 1 rail lip of groove profile rail from the slot bottom of track slot
To the top of rail lip by road built-up welding, last one of welding bead of first layer welding layer overflows the track slot and is deposited in the rail lip
Top, and so on, the welding bead of upper one layer of welding layer is along this direction by road built-up welding；The welding bead of upper one layer of welding layer is shorter than next
The welding bead of layer welding layer, between the end of the end of upper one layer of welding layer welding bead welding bead corresponding with next layer of welding layer away from
It is covered on the last one welding bead of next layer of welding layer from the last one welding bead for 20~50mm, upper one layer of welding layer and not
It is in contact with the top of the rail lip；All welding beads are mutually parallel；
Step 4: heat preservation: after welding, carrying out isothermal holding to welding region using asbestos；
Step 5: post weld heat treatment: carrying out tempering when 2 temperature of overlay cladding is down to 70~150 DEG C, refinement welding produces
Raw metallographic structure；Tempering time is 3~5 minutes, and tempering temperature is 225~450 DEG C；
Step 6: polishing: after heat treatment, carrying out grinding process, after polishing, 2 surface of overlay cladding to the overlay cladding 2
Smooth, the both ends of the overlay cladding 2 and the groove profile rail 1 seamlessly transit, and after polishing, the overlay cladding 2 is with a thickness of 8mm.
The welding bead of upper one layer of welding layer is accumulated on two welding beads similar in the next layer of welding layer, as the second layer welds
Second welding bead of layer is deposited on the first welding bead and the second welding bead of first layer welding layer.
First welding bead of upper one layer of welding layer be deposited in the track slot slot bottom and the next layer of welding layer
On one welding bead.
When preheating, preheated zone length is held always from built-up welding is extended down to 100~300mm outside；Built-up welding region preheating temperature is 150
~350 DEG C, remaining region preheating temperature is 150~200 DEG C.
The welding wire of built-up welding uses high-wearing feature welding wire.
When built-up welding, first rail is placed horizontally on cushion block 3, so that overlaying surface is horizontal.
Before built-up welding, 1 groove width of groove profile rail is 36mm, after built-up welding polishing, at the overlay cladding 2, the groove profile rail 1
Groove width is 28mm.
In the present embodiment, when overlay cladding 2 is worn, only scene is needed to carry out repair welding to fray, then polished i.e.
Can, it is not required to remove rail；Lincoln's 3M welding wire of welding wire selection diameter 2mm.
The course of work and principle: it will polish first with built-up welding region clean, lustrous surface is without rust spot；Then built-up welding is carried out,
First rail is placed on cushion block 3, so that overlaying surface is horizontal, build-up welding apparatus is reused and carries out built-up welding, when built-up welding, preheating zone is from heap
Weldering is extended down to 100~300mm outside holding always, and built-up welding regional temperature is 150~350 DEG C, remaining regional temperature is 150~200 DEG C, the
First of welding bead of one layer of welding layer is deposited in the track slot slot bottom of groove profile rail 1, and subsequent passes are successively along 1 rail lip of groove profile rail from track slot
Slot bottom to the top of rail lip by road built-up welding, last one of welding bead overflows track slot and accumulates the top of in-orbit lip；The built-up welding second layer
When, first of welding bead is deposited on the slot bottom of track slot and the first welding bead of first layer welding layer, the second welding bead heap of the second layer
It accumulates on first welding bead of first layer and the second welding bead of first layer, and so on, until the second last layer is last together
Welding bead, last one of the welding bead of the second layer, which is covered on the last one welding bead of first layer and not with the top of rail lip, to be in contact, the
On the welding bead of the equal first layer welding layer of the welding bead start-stop point of two layers of welding layer, the end of second layer welding layer welding bead and first layer are welded
Connect the end of the corresponding welding bead of layer the distance between for 20~50mm；Heap postwelding covers asbestos on overlay cladding 2, is protected
Temperature processing；Tempering, the metallographic structure that refinement welding generates are carried out when welding layer temperature is down to 70~150 DEG C；Heat treatment
Afterwards, polished using grinding device overlay cladding 2 so that 2 surface of overlay cladding is smooth, the both ends of overlay cladding 2 with groove profile rail 1
Smooth transition, overlay cladding 2 with a thickness of 8mm after polishing.
Construction energetically described on base, with each city in the whole nation to modern tram, existing Sanya domestic at present, Soviet Union
A plurality of street railway is all built in the cities such as state, Guangzhou, Huaian, Beijing, Shanghai.Track is as tramcar system
Important component can play the role of protecting wheel since the flangeway on 1 inoperative side of 60R2/59R2 groove profile rail designs,
Prevent vehicle derailing；And at the frog of track switch, in order to enable vehicle can be that milling is simultaneously on stock rail mostly with safety
Additional guard rail is added, the rail groove width of stock rail is reduced；However this technique processing complexity, and it is feeding to be unfavorable for the later period after installing
Shield, dismounting are inconvenient.
The present invention reduces the space of track slot by being welded with overlay cladding 2 on groove profile rail 1, is not required on stock rail milling simultaneously
Additional guard rail is added, can make vehicle can be with safety, simple process, easy to process, saving time；If overlay cladding 2
After there is abrasion, only scene is needed to carry out repair welding, is not required to disassembly rail, it is easy to maintain.
The above, preferable embodiment only of the invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail, which comprises the following steps:
Step 1: cleaning: the region for needing built-up welding being polished clean, lustrous surface is without rust spot；
Step 2: preheating: carrying out the pre-heat treatment to rail before built-up welding；
Step 3: built-up welding: the overlay cladding that built-up welding obtains at least two layers of welding layer, first of welding bead accumulation of first layer welding layer
In the track slot slot bottom of groove profile rail, the subsequent passes of first layer welding layer are successively along groove profile rail rail lip from the slot bottom of track slot to rail lip
Top overflows the track slot and is deposited in the top of the rail lip by road built-up welding, last one of welding bead of first layer welding layer, according to
Secondary to analogize, the welding bead of upper one layer of welding layer is along this direction by road built-up welding；The welding bead of upper one layer of welding layer is shorter than next layer of welding
Layer welding bead, the end of the end of upper one layer of welding layer welding bead welding bead corresponding with next layer of welding layer the distance between be 20
~50mm, the last one welding bead of upper one layer of welding layer be covered on the last one welding bead of next layer of welding layer and not with it is described
The top of rail lip is in contact；All welding beads are mutually parallel；
Step 4: heat preservation: after welding, carrying out isothermal holding to welding region using asbestos；
Step 5: post weld heat treatment: carrying out tempering when overlay cladding temperature is down to 70~150 DEG C, refinement welding generates
Metallographic structure；Tempering time is 3~5 minutes, and tempering temperature is 225~450 DEG C；
Step 6: polishing: after heat treatment, grinding process is carried out to the overlay cladding, after polishing, the overlay surface is smooth,
The both ends of the overlay cladding and the groove profile rail seamlessly transit, and after polishing, the overlay cladding is with a thickness of 8mm.
2. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that on
The welding bead of one layer of welding layer is accumulated on two welding beads similar in the next layer of welding layer, such as the second weldering of second layer welding layer
Road is deposited on the first welding bead and the second welding bead of first layer welding layer.
3. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that institute
The first welding bead for stating one layer of welding layer is deposited on the slot bottom of the track slot and the first welding bead of the next layer of welding layer.
4. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that pre-
When hot, preheated zone length is held always from built-up welding is extended down to 100~300mm outside；Built-up welding region preheating temperature is 150~350 DEG C,
Remaining region preheating temperature is 150~200 DEG C.
5. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that heap
The welding wire of weldering uses high-wearing feature welding wire.
6. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that heap
When weldering, first rail is placed horizontally on cushion block, so that overlaying surface is horizontal.
7. a kind of welding bead-welding technology of diamond crossing track switch groove profile rail according to claim 1, which is characterized in that heap
Before weldering, the groove profile track slot width is 36mm, and after built-up welding polishing, at the overlay cladding, the groove width of the groove profile rail is 28mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535169.XA CN110193676A (en) | 2019-06-20 | 2019-06-20 | A kind of welding bead-welding technology of diamond crossing track switch groove profile rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535169.XA CN110193676A (en) | 2019-06-20 | 2019-06-20 | A kind of welding bead-welding technology of diamond crossing track switch groove profile rail |
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|---|---|
| CN110193676A true CN110193676A (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910535169.XA Pending CN110193676A (en) | 2019-06-20 | 2019-06-20 | A kind of welding bead-welding technology of diamond crossing track switch groove profile rail |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515743A (en) * | 2003-01-03 | 2004-07-28 | 张准胜 | Laser intensified railroad switch |
| RO121683B1 (en) * | 2002-05-28 | 2008-02-28 | Soprex Imi S.A. | Process for reclaiming tramway rails with side wear |
| CN201099815Y (en) * | 2007-09-29 | 2008-08-13 | 方建平 | Railway rail overlaying reinforcing rail |
| CN109719456A (en) * | 2019-02-18 | 2019-05-07 | 苏州大学 | A kind of novel steel rail reparation alloy wire and the method for Rail Surface Abrasion reparation |
| CN109773308A (en) * | 2019-01-31 | 2019-05-21 | 武汉船用机械有限责任公司 | The end face overlaying method of copper alloy guide rail |
-
2019
- 2019-06-20 CN CN201910535169.XA patent/CN110193676A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO121683B1 (en) * | 2002-05-28 | 2008-02-28 | Soprex Imi S.A. | Process for reclaiming tramway rails with side wear |
| CN1515743A (en) * | 2003-01-03 | 2004-07-28 | 张准胜 | Laser intensified railroad switch |
| CN201099815Y (en) * | 2007-09-29 | 2008-08-13 | 方建平 | Railway rail overlaying reinforcing rail |
| CN109773308A (en) * | 2019-01-31 | 2019-05-21 | 武汉船用机械有限责任公司 | The end face overlaying method of copper alloy guide rail |
| CN109719456A (en) * | 2019-02-18 | 2019-05-07 | 苏州大学 | A kind of novel steel rail reparation alloy wire and the method for Rail Surface Abrasion reparation |
Non-Patent Citations (2)
| Title |
|---|
| 沈阳铁路局工务处: "《工务线路维修单项作业指导书》", 31 July 2014, 北京：中国铁道出版社 * |
| 清华大学机械系焊○班高锰钢堆焊毕业实践小组: "工艺因素对高锰钢道岔堆焊质量的影响", 《清华北大理工学报》 * |
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Application publication date: 20190903 |