CN110508975A - The selective overlaying method and device of rich chromium cast iron wear-resistant coating - Google Patents
The selective overlaying method and device of rich chromium cast iron wear-resistant coating Download PDFInfo
- Publication number
- CN110508975A CN110508975A CN201910788474.XA CN201910788474A CN110508975A CN 110508975 A CN110508975 A CN 110508975A CN 201910788474 A CN201910788474 A CN 201910788474A CN 110508975 A CN110508975 A CN 110508975A
- Authority
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- China
- Prior art keywords
- copper pipe
- water
- cast iron
- cooling
- chromium cast
- 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.)
- Pending
Links
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 48
- 239000011651 chromium Substances 0.000 title claims abstract description 48
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 46
- 239000011248 coating agent Substances 0.000 title claims abstract description 38
- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010949 copper Substances 0.000 claims abstract description 72
- 229910052802 copper Inorganic materials 0.000 claims abstract description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 239000010953 base metal Substances 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 230000017525 heat dissipation Effects 0.000 claims abstract description 3
- 230000001788 irregular Effects 0.000 claims description 6
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- B23K37/003—Cooling means
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of selective overlaying method of rich chromium cast iron wear-resistant coating and devices, this method are as follows: base material to be welded is placed in the copper pipe upper surface of water-circulating cooling device, the water-circulating cooling device includes copper pipe cooling device and cooling recirculation system, cooling recirculation system is provided with water outlet and water inlet, and the both ends of copper pipe are connected with the water outlet of cooling recirculation system and water inlet respectively；Open water-circulating cooling device, cooling water is set to circulate between copper pipe and water-circulating cooling device, base material to be welded is placed on copper pipe, using base material to be welded as matrix, surface carries out the built-up welding of rich chromium cast iron wear-resistant coating on it, in weld deposit process, base material to be welded is directly contacted with cooling recirculation system, control overlay cladding cooling velocity in rich chromium cast iron weld deposit process and it is cooling when heat dissipation direction so that control the direction of growth of carbide, grow the vertical base metal surface of main wear phase i.e. carbide in rich chromium cast iron wear-resistant coating.The present invention has many advantages, such as that processing effect is good, high in machining efficiency.
Description
Technical field
The present invention relates to a kind of method and devices based on water-circulating cooling device built-up welding rich chromium cast iron wear-resistant coating, belong to weldering
Connect technology field.
Background technique
Rich chromium cast iron is a kind of widely used hardfacing materials.Using the method for built-up welding on the steel plate of good toughness heap
Rich chromium cast iron antifriction alloy is welded, not only can guarantee the strength of materials and toughness but also the wear-resisting property that can guarantee material surface.High chromium casting
Iron is so have good wearability, mainly due to (Cr, Fe) containing high rigidity7C3Carbide.
During actual abrasive wear, there are mainly two types of the wear-out failure forms of carbide: peeling off and is cut.
Therefore, if carbide crystalline perpendicular to base metal surface grow, cross section be wear-resistant surface, in friction process matrix with
Stress needed for the interface of carbide forms crackle is concentrated just larger, and carbide non-breakable disengaging matrix in the base makes
The wearability of alloy improves.Currently, the Carbide Phases direction of growth more zero of the rich chromium cast iron coating of wear-resisting workpiece surface overlaying
Disorderly, for some perpendicular to base material surface, some is parallel to base material surface, oblique growth also.When workpiece works, it is parallel to matrix
Metal surface grows carbide crystalline, then easily forms serious stress around it and concentrate, be easy carbide in wear process
It is detached from matrix, polishing machine is caused to decline.Therefore, the wear-resisting workpiece service performance of existing built-up welding rich chromium cast iron is poor, the service life compared with
It is short.
Summary of the invention
The purpose of the invention is in view of the deficiencies of the prior art, provide a kind of selectivity of rich chromium cast iron wear-resistant coating
Overlaying method and device, to improve workpiece surface built-up welding rich chromium cast iron coating wear resistance.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of selective overlaying method of rich chromium cast iron wear-resistant coating, comprising the following steps:
(1) base material to be welded is placed in the copper pipe upper surface of water-circulating cooling device, the water-circulating cooling device includes that copper pipe is cold
But device and cooling recirculation system, cooling recirculation system are provided with water outlet and water inlet, copper pipe cooling device include copper pipe and
Support section, the both ends of copper pipe are connected with the water outlet of cooling recirculation system and water inlet respectively, and copper pipe is set to support portion
Above point；
(2) water-circulating cooling device is opened, so that cooling water is circulated between copper pipe and water-circulating cooling device, base material to be welded is placed in
On copper pipe, using base material to be welded as matrix, surface carries out the built-up welding of rich chromium cast iron wear-resistant coating on it, to be welded in weld deposit process
Base material is directly contacted with cooling recirculation system, controls heat dissipation when overlay cladding cooling velocity and cooling in rich chromium cast iron weld deposit process
Direction and then the direction of growth for controlling carbide keep the vertical matrix of main wear phase i.e. carbide in rich chromium cast iron wear-resistant coating golden
Metal surface growth.
In the step (2), fast cooling is carried out to matrix by the cooling water in copper pipe, in rich chromium cast iron wear-resistant coating
In forming process, vertical welding surface formation temperature gradient, and then make the vertical base metal surface growth of carbide, carbide is brilliant
Body is grown perpendicular to base metal surface, then its cross section is wear-resistant surface, the interface of matrix and carbide in friction process
The concentration of stress needed for forming crackle just becomes larger, carbide non-breakable disengaging matrix in the base, and gained is made to have the casting of high chromium
The wearability of the matrix of iron wear-resistant coating improves.
A kind of water-circulating cooling device of the selective built-up welding for rich chromium cast iron wear-resistant coating, including copper pipe cooling device and
Cooling recirculation system, cooling recirculation system are provided with water outlet and water inlet, and copper pipe cooling device includes copper pipe and support section,
The both ends of copper pipe are connected with water outlet and water inlet respectively, and copper pipe is set to above support section, for placing above copper pipe
Base material to be welded, by the circulation of cooling water in cooling recirculation system and copper pipe, in rich chromium cast iron wear-resistant coating weld deposit process
Base material to be welded carries out fast cooling.
Further, the copper pipe is made of multiple groups U-shaped copper pipe, and interlock headtotail, constitutes snakelike arrangement.
Further, it is rectangular copper pipe area that the copper pipe, which constitutes a surface,.
Further, the surface that the copper pipe is constituted is plane or irregular male and fomale(M&F).
Further, the support section includes supporting plate and bracket, and supporting plate is fixed on bracket, and copper pipe is arranged in supporting plate
On.
Further, the cooling recirculation system is cooling-water machine.Beneficial effects of the present invention are as follows:
The utility model has the advantages that method of the invention and related water-circulating cooling device structure are simple, processing cost is low, removes copper pipe
Outside the simple moulding of palpus, other parts can be directly from market purchasing, it is easy to accomplish engineering application.The present invention can be used for a variety of shapes
The rich chromium cast iron built-up welding of shape and various material workpiece.Cooling copper tube is directly contacted with base material to be welded in the present invention, with existing Gao Ge
Cast-iron surfacing welding is compared, and improves rich chromium cast iron built-up welding cooling rate, and degree of supercooling increases when solidification, makes high hard carbon compound in overlay cladding
It is grown perpendicular to base material surface orientation, forms coating relatively more resistant to abrasive wear.
Detailed description of the invention
Fig. 1 is the usage state diagram of the recirculated water cooling tooling for the built-up welding of rich chromium cast iron wear-resistant coating of the invention；
Fig. 2 is irregular base material and copper pipe assembling schematic diagram；
In figure: 1- cooling-water machine；2- base material to be welded；3- copper pipe；4- bracket；5- supporting plate.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of water-circulating cooling device of selective built-up welding for rich chromium cast iron wear-resistant coating of the invention,
Including copper pipe cooling device and cooling recirculation system, cooling recirculation system is cooling-water machine 1, is provided with water outlet and water inlet,
Copper pipe cooling device includes copper pipe 3 and support section, and support section includes supporting plate 5 and bracket 4, and supporting plate 5 is fixed on bracket 1,
Copper pipe 3 is arranged on supporting plate 5；The both ends of copper pipe 3 are connected with water outlet and water inlet respectively, above copper pipe 3 for place to
Base material 2 is welded, by the circulation of cooling water in cooling-water machine 1 and copper pipe 3, to the mother to be welded in rich chromium cast iron wear-resistant coating weld deposit process
Material 2 carries out fast cooling.
Wherein, copper pipe is made of multiple groups U-shaped copper pipe, and interlock headtotail, constitutes snakelike arrangement.Copper pipe constitutes a table
Face is rectangular copper pipe area.The surface that copper pipe is constituted is plane or irregular male and fomale(M&F), smooth to be welded to adapt to
The rich chromium cast iron wear-resistant coating built-up welding of base material and irregular shape base material to be welded.Rich chromium cast iron suitable for irregular shape base material
When built-up welding, the assembly of base material 2 and copper pipe 3 to be welded is as shown in Figure 2.
Wherein, copper pipe 3 is lifted by the support construction that supporting plate 5 and bracket 4 form, and plays supporting role in this way, effectively anti-
The deformation of copper pipe Yu cooling-water machine interface is stopped.
The selective overlaying method of rich chromium cast iron wear-resistant coating of the invention are as follows:
Base material to be welded is placed in the copper pipe upper surface of water-circulating cooling device, opens cooling-water machine, makes cooling water in copper pipe and follows
It circulates between ring water cooling plant, base material to be welded is placed on copper pipe, using base material to be welded as matrix, surface carries out rich chromium cast iron on it
The built-up welding of wear-resistant coating in weld deposit process, carries out fast cooling to matrix by the cooling water in copper pipe, wear-resisting in rich chromium cast iron
In coating forming procedure, vertical welding surface forms biggish temperature gradient, and then keeps the vertical base metal surface of carbide raw
Long, carbide crystalline is grown perpendicular to base metal surface, then its cross section is wear-resistant surface, matrix and carbonization in friction process
The concentration of stress needed for the interface of object forms crackle just becomes larger, and carbide non-breakable disengaging matrix in the base makes gained
The wearability of matrix with rich chromium cast iron wear-resistant coating improves.
The basic principles, main features and advantages of the present invention have been shown and described above.The present invention can be with
Have an other embodiments, all technical solutions formed using equivalent substitution or equivalent transformation, the present invention claims protection model
Within enclosing.
Claims (8)
1. a kind of selective overlaying method of rich chromium cast iron wear-resistant coating, it is characterised in that: the following steps are included:
(1) base material to be welded is placed in the copper pipe upper surface of water-circulating cooling device, the water-circulating cooling device includes the cooling dress of copper pipe
It sets and cooling recirculation system, cooling recirculation system is provided with water outlet and water inlet, copper pipe cooling device includes copper pipe and support
Part, the both ends of copper pipe are connected with the water outlet of cooling recirculation system and water inlet respectively, and copper pipe is set on support section
Side；
(2) water-circulating cooling device is opened, so that cooling water is circulated between copper pipe and water-circulating cooling device, base material to be welded is placed in copper pipe
On, using base material to be welded as matrix, surface carries out the built-up welding of rich chromium cast iron wear-resistant coating, in weld deposit process, base material to be welded on it
It is directly contacted with cooling recirculation system, controls heat dissipation direction when overlay cladding cooling velocity and cooling in rich chromium cast iron weld deposit process
And then the direction of growth of carbide is controlled, make the vertical parent metal table of main wear phase i.e. carbide in rich chromium cast iron wear-resistant coating
It looks unfamiliar length.
2. the selective overlaying method of rich chromium cast iron wear-resistant coating according to claim 1, it is characterised in that: the step
(2) in, fast cooling is carried out to matrix by the cooling water in copper pipe, in rich chromium cast iron wear-resistant coating forming process, vertically
Face of weld formation temperature gradient, and then make the vertical base metal surface growth of carbide, carbide crystalline is perpendicular to matrix gold
Metal surface growth, then its cross section is wear-resistant surface, and the interface of matrix and carbide is formed needed for crackle in friction process
Stress concentration just becomes larger, and carbide non-breakable disengaging matrix in the base makes gained have the base of rich chromium cast iron wear-resistant coating
The wearability of body improves.
3. a kind of water-circulating cooling device of the selective built-up welding for rich chromium cast iron wear-resistant coating, it is characterised in that: including copper pipe
Cooling device and cooling recirculation system, cooling recirculation system are provided with water outlet and water inlet, and copper pipe cooling device includes copper pipe
And support section, the both ends of copper pipe are connected with water outlet and water inlet respectively, copper pipe is set to above support section, on copper pipe
Side is for placing base material to be welded, by the circulation of cooling water in cooling recirculation system and copper pipe, to rich chromium cast iron wear-resistant coating heap
Base material to be welded during weldering carries out fast cooling.
4. the water-circulating cooling device of the selective built-up welding according to claim 3 for rich chromium cast iron wear-resistant coating, special
Sign is: the copper pipe is made of multiple groups U-shaped copper pipe, and interlock headtotail, constitutes snakelike arrangement.
5. the water-circulating cooling device of the selective built-up welding according to claim 3 or 4 for rich chromium cast iron wear-resistant coating,
Be characterized in that: it is rectangular copper pipe area that the copper pipe, which constitutes a surface,.
6. the water-circulating cooling device of the selective built-up welding according to claim 5 for rich chromium cast iron wear-resistant coating, special
Sign is: the surface that the copper pipe is constituted is plane or irregular male and fomale(M&F).
7. the water-circulating cooling device of the selective built-up welding according to claim 3 for rich chromium cast iron wear-resistant coating, special
Sign is: the support section includes supporting plate and bracket, and supporting plate is fixed on bracket, and copper pipe is arranged on supporting plate.
8. the water-circulating cooling device of the selective built-up welding according to claim 3 for rich chromium cast iron wear-resistant coating, special
Sign is: the cooling recirculation system is cooling-water machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788474.XA CN110508975A (en) | 2019-08-26 | 2019-08-26 | The selective overlaying method and device of rich chromium cast iron wear-resistant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788474.XA CN110508975A (en) | 2019-08-26 | 2019-08-26 | The selective overlaying method and device of rich chromium cast iron wear-resistant coating |
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|---|---|
| CN110508975A true CN110508975A (en) | 2019-11-29 |
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| CN201910788474.XA Pending CN110508975A (en) | 2019-08-26 | 2019-08-26 | The selective overlaying method and device of rich chromium cast iron wear-resistant coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846575A (en) * | 2020-12-24 | 2021-05-28 | 上海交通大学 | Nickel-based 690 alloy U-shaped channel surfacing layer circulating water cooling device and application thereof |
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Application publication date: 20191129 |
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