CN107675164B - A kind of alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding - Google Patents
A kind of alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding Download PDFInfo
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- CN107675164B CN107675164B CN201710683529.1A CN201710683529A CN107675164B CN 107675164 B CN107675164 B CN 107675164B CN 201710683529 A CN201710683529 A CN 201710683529A CN 107675164 B CN107675164 B CN 107675164B
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- Prior art keywords
- rotary digging
- digging tooth
- laser
- annular groove
- cladding
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- 201000011180 Dental Pulp Calcification Diseases 0.000 title claims abstract description 41
- 238000004372 laser cladding Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005253 cladding Methods 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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
- C23C24/106—Coating with metal alloys or metal elements only
-
- B22F1/0003—
-
- 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
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
Abstract
The invention discloses a kind of alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding, which is consisted of the following components in percentage by weight: Fe:6.3%~6.9%；Cr:8.5%~9.1%；C:2.2%~2.7%；Si:2.1%~2.8%；B:1.4%~1.9%；W:32%~34%；Co:1.5%~1.6%；Remaining is Ni.Laser cladding method includes: that (1) processes multiple annular grooves；(2) laser head is directed at one of annular groove；(3) alloy powder is sent；(4) laser melting coating.(5) laser head is directed at next annular groove, repeated step (3) and (4)；(6) step (5) are repeated, until all annular grooves complete cladding.This method can assign rotary digging tooth denticle tapered surface very high wearability, and rotary digging tooth denticle toughness keeps good.
Description
Technical field
The invention belongs to material surface strengthening technical fields, and in particular to one kind is used for rotary digging tooth denticle surface laser cladding
Alloy powder and laser cladding method.
Background technique
Rotary drilling rig play the role of in infrastructure construction it is very important, in bored concrete pile, diaphragm wall, strengthening of foundation etc.
It finds broad application in a variety of foundation basic constructions.And drill bit is then one of the key component of rotary drilling rig, drill bit is by installation
Rotary digging tooth on it carries out rotary digging operation to soil layer rock contacted etc..Therefore, the service life and performance of rotary digging tooth are good
It is bad to directly affect construction speed and cost input.
Currently, the rotary digging tooth of commercial type is many kinds of, it is able to satisfy requirement substantially.Most of rotary digging tooth denticle bases
Material often uses 42CrMo, 35CrMnSi etc., but the high temperature resistance of such material is poor, after uninterrupted working time is longer, denticle temperature
Sharply increase, comprehensive performance decline is serious, to generate wear-resisting property reduction, toughness is reduced, cause denticle Fast Wearing and
Fracture etc..In addition, existing rotary digging tooth wearing layer is often using directly by the way of product tapered surface surface cladding wearing layer, it will be resistance to
Mill layer is paved with entire tapered surface.Although the wearability of rotary digging tooth working face can be greatly improved in the method, in cladding process
Also a large amount of heat input is brought, the toughness of this region denticle substrate is reduced, stress is caused to concentrate, rotary digging tooth is in operation process
In can be easy to produce and break, crack, a series of problems, such as wearing layer peels off.Therefore need to design a kind of novel rotary digging tooth and wear-resisting
Layer preparation process, makes rotary digging tooth obtain good high temperature resistance, while having both wearability and toughness in working face.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and rotary digging tooth denticle can be made simultaneously by providing one kind
Tapered surface has both the alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding of wearability and toughness.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of alloy powder for rotary digging tooth denticle surface laser cladding, consists of the following components in percentage by weight:
Fe:6.3%~6.9%；Cr:8.5%~9.1%；C:2.2%~2.7%；Si:2.1%~2.8%；B:1.4%~
1.9%；W:32%~34%；Co:1.5%~1.6%；Remaining is Ni.
Preferably, the granularity of the alloy powder for rotary digging tooth denticle surface laser cladding is 80~325 mesh.
Preferably, the material of the rotary digging tooth denticle be H13K, 321,309,310S, 314,6Mo, 15CrMo, 42CrMo,
35CrMnSi、12Cr1MoV、12CrMoWVTiB、10Cr2Mo1、25Cr2Mo1V、20Cr3MoWv、1Cr11MoV、1Cr12WmoV
Or 2Cr12WMoNbVB.
The inventive concept total as one carries out rotary digging tooth denticle using above-mentioned alloy powder the present invention also provides a kind of
The method of surface laser cladding, comprising the following steps:
(1) multiple annular grooves are processed on rotary digging tooth denticle tapered surface；
(2) laser head of laser is aligned to one of them in the multiple annular groove；
(3) alloy powder is uniformly sent into the annular groove being aligned to laser head；
(4) the laser head sending laser melts the reactant of generation by alloy powder described in desired trajectory continuous melting
The annular groove is filled, it is air-cooled, form cladding layer.
(5) laser head is directed at next annular groove, repeated step (3) and (4)；
(6) step (5) are repeated, until all annular grooves complete cladding.
Preferably, in the step (4), laser cladding technological parameter are as follows: 1500~2800W of power, scanning speed 2~
5mm/s, defocusing amount -25~+45mm, feed speed 10g/min~30g/min of alloy powder, 10~30L/ of protection air-flow amount
min。
Preferably, laser facula is circular light spot or square focus spot.
Preferably, groove width≤square focus spot diagonal line of groove width≤circular light spot diameter of annular groove or annular groove
Length.
Preferably, interval >=single annular groove groove width in the step (1), between adjacent annular slot.
Preferably, in the step (4), the thickness of the cladding layer is greater than the groove depth 1.5mm or more of annular groove.
Preferably, between the step (1) and (2), further includes: carry out oil removing, processing of rust removing to annular groove.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention is by processing multiple equidistant annular grooves in rotary digging tooth denticle tapered surface, then cladding is wear-resisting in a ring groove
Layer, compared with directly in the mode of product tapered surface surface cladding wearing layer, the present invention forms denticle base during cladding wearing layer
The toughness decline of material is small, i.e. the alternate cooperation of the present invention available high hardness wear-resisting layer and high tenacity substrate, is guaranteeing rotary digging tooth
While wearability, thermal stress failure can effectively prevent.
Specific embodiment
Below in conjunction with specific preferred embodiment, the invention will be further described, but not thereby limiting the invention
Protection scope.
Embodiment 1:
A kind of alloy powder for rotary digging tooth denticle surface laser cladding, consists of the following components in percentage by weight:
Fe:6.5%；Cr:8.8%；C:2.5%；Si:2.5%；B:1.6%；W:33%；Co:1.5%；Remaining is Ni.The alloyed powder
The granularity at end is between 80~325 mesh.
It is a kind of to carry out rotary digging tooth denticle (material is H13K (4Cr5MoSiV1)) surface laser using above-mentioned alloy powder
The method of cladding, comprising the following steps:
(1) multiple equidistant annular grooves are processed in rotary digging tooth denticle tapered surface, the groove width and groove depth of each annular groove are equal,
And the interval between adjacent annular slot is greater than the groove width of single annular groove；
(2) to oil removing, processing of rust removing is carried out in rotary digging tooth denticle conical surface and annular groove, oil removal treatment is alcohol washes
+ ultrasonic cleaning, processing of rust removing are flame cleaning；
(3) laser head of laser is directed at rotary digging tooth denticle tapered surface the lowermost annular groove；
(4) above-mentioned alloy powder, the feed speed 20g/ of alloy powder are uniformly sent into the annular groove being aligned to laser head
min；
(5) laser head issues laser, and laser facula is circular light spot, and the diameter of the circular light spot is equal to annular groove
Groove width, by alloy powder described in desired trajectory continuous melting, the reactant for melting generation fills the annular groove；Laser is specifically pre-
If track is S type motion profile, it may be assumed that from the center on annular groove top to the center movement of bottom end, then move to left end far from bottom end
The nearest motor point of the heart, then it is linearly moved to the left end motor point nearest far from top center from the motor point, it is moved by this rule,
Until completing the cladding of annular groove left end；Then laser head moves to the right end motor point nearest from top central point, moves rail by S type
Mark completes the cladding of annular groove right end.It is air-cooled after the completion of cladding, cladding layer is formed, cladding layer is full of entire annular groove, cladding layer
Thickness be greater than annular groove groove depth 2mm.Laser cladding technological parameter are as follows: power 2000W, scanning speed 3mm/s, defocusing amount
15mm, protection air-flow amount 20L/min.
(6) laser head is directed at next annular groove, repeated step (4) and (5)；
(7) step (6) are repeated, until all annular grooves complete cladding.
Embodiment 2:
A kind of alloy powder for rotary digging tooth denticle surface laser cladding, consists of the following components in percentage by weight:
Fe:6.4%；Cr:9.0%；C:2.5%；Si:2.6%；B:1.5%；W:32%；Co:1.6%；Remaining is Ni.The alloyed powder
The granularity at end is between 80~325 mesh.
A method of rotary digging tooth denticle (material 42CrMo) surface laser cladding being carried out using above-mentioned alloy powder,
It is essentially identical with embodiment, it only difference is that:
The feed speed 15g/min of alloy powder；Laser cladding technological parameter are as follows: power 2500W, scanning speed 3mm/s,
Defocusing amount 20mm, protection air-flow amount 15L/min.
Embodiment 3:
A kind of alloy powder for rotary digging tooth denticle surface laser cladding, consists of the following components in percentage by weight:
Fe:6.8%；Cr:8.8%；C:2.5%；Si:2.4%；B:1.5%；W:32%；Co:1.6%；Remaining is Ni.The alloyed powder
The granularity at end is between 80~325 mesh.
A kind of side carrying out rotary digging tooth denticle (material 25Cr2Mo1V) surface laser cladding using above-mentioned alloy powder
Method, it is essentially identical with embodiment, it only difference is that:
The feed speed 30g/min of alloy powder；Laser cladding technological parameter are as follows: power 2700W, scanning speed 4mm/s,
Defocusing amount -10mm, protection air-flow amount 15L/min.
After tested, the method for the surface laser cladding of Examples 1 to 3, compared with directly in product tapered surface surface cladding it is resistance to
The mode for grinding layer, the rotary digging tooth with cladding wearing layer of the present invention is not likely to produce in operation process to break, and cracks, illustrates the present invention
The toughness decline of denticle substrate is small during formation cladding wearing layer；And wearing layer is not easy to peel off, illustrate denticle substrate with it is resistance to
It grinds layer and combines stronger, the above test result shows that the present invention can get that high hardness wear-resisting layer is alternate with high tenacity substrate matches
It closes, while guaranteeing rotary digging tooth wearability, can effectively prevent thermal stress failure.
The above is only several embodiments of the application, not does any type of limitation to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, a little variation or modification are made using the technology contents of the disclosure above and is equal to
Case study on implementation is imitated, is belonged in technical proposal scope.
Claims (8)
1. a kind of method of rotary digging tooth denticle surface laser cladding, alloy powder used in cladding is by following components in percentage by weight
Composition: Fe:6.3%~6.9%；Cr:8.5%~9.1%；C:2.2%~2.7%；Si:2.1%~2.8%；B:1.4%~
1.9%；W:32%~34%；Co:1.5%~1.6%；Remaining is Ni；The following steps are included:
(1) multiple annular grooves are processed on rotary digging tooth denticle tapered surface；
(2) laser head of laser is aligned to one of them in the multiple annular groove；
(3) alloy powder is uniformly sent into the annular groove being aligned to laser head；
(4) laser head issues laser, by alloy powder described in desired trajectory continuous melting, melts the reactant filling of generation
The annular groove, it is air-cooled, form cladding layer；
(5) laser head is directed at next annular groove, repeated step (3) and (4)；
(6) step (5) are repeated, until all annular grooves complete cladding；
In the step (1), the multiple annular groove is uniformly distributed along rotary digging tooth denticle circumferential surface, between adjacent annular slot
Interval >=single annular groove groove width.
2. the method for rotary digging tooth denticle surface laser cladding according to claim 1, which is characterized in that described to be used for rotary digging
The granularity of the alloy powder of tooth denticle surface laser cladding is 80~325 mesh.
3. the method for rotary digging tooth denticle surface laser cladding according to claim 1, which is characterized in that the rotary digging tooth tooth
The material of body be H13K, 321,309,310S, 314,6Mo, 15CrMo, 42CrMo, 35CrMnSi, 12Cr1MoV,
12CrMoWVTiB, 10Cr2Mo1,25Cr2Mo1V, 20Cr3MoWV, 1Cr11MoV, 1Cr12WMoV or 2Cr12WMoNbVB.
4. the method for rotary digging tooth denticle surface laser cladding according to claim 1, which is characterized in that the step (4)
In, laser cladding technological parameter are as follows: 1500~2800W of power, 2~5mm/s of scanning speed, defocusing amount -25~+45mm, alloy
Feed speed 10g/min~30g/min of powder, 10~30L/min of protection air-flow amount.
5. the method for rotary digging tooth denticle surface laser cladding according to claim 4, which is characterized in that laser facula is circle
Shape hot spot or square focus spot.
6. the method for rotary digging tooth denticle surface laser cladding according to claim 5, which is characterized in that the groove width of annular groove
The diameter of≤circular light spot or groove width≤square focus spot catercorner length of annular groove.
7. the method for described in any item rotary digging tooth denticle surface laser claddings according to claim 1~6, which is characterized in that institute
It states in step (4), the thickness of the cladding layer is greater than the groove depth 1.5mm or more of annular groove.
8. the method for described in any item rotary digging tooth denticle surface laser claddings according to claim 1~6, which is characterized in that institute
It states between step (1) and (2), further includes: oil removing, processing of rust removing are carried out to annular groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683529.1A CN107675164B (en) | 2017-08-11 | 2017-08-11 | A kind of alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683529.1A CN107675164B (en) | 2017-08-11 | 2017-08-11 | A kind of alloy powder and laser cladding method for rotary digging tooth denticle surface laser cladding |
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| CN107675164A CN107675164A (en) | 2018-02-09 |
| CN107675164B true CN107675164B (en) | 2019-10-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110923696A (en) * | 2019-11-01 | 2020-03-27 | 江苏特维克科技有限公司 | Laser cladding nickel-based material for surface of ball valve and additive manufacturing process thereof |
| CN112322996B (en) * | 2020-10-19 | 2021-11-30 | 中国科学院半导体研究所 | Alloy powder for steel rail laser cladding strengthening and laser cladding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3743556A (en) * | 1970-03-30 | 1973-07-03 | Composite Sciences | Coating metallic substrate with powdered filler and molten metal |
| CN103350224A (en) * | 2013-06-18 | 2013-10-16 | 江苏和昊激光科技有限公司 | Special nickel metal ceramal powder for laser cladding of crankshaft |
| CN104593766A (en) * | 2014-12-15 | 2015-05-06 | 江苏中科大港激光科技有限公司 | Laser preparation method of erosion-resistant surface layer of spherical body of ball valve in coal chemical industry |
| CN204646234U (en) * | 2015-04-10 | 2015-09-16 | 山东天工岩土工程设备有限公司 | A kind of high-wear-resistance mining pick |
-
2017
- 2017-08-11 CN CN201710683529.1A patent/CN107675164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3743556A (en) * | 1970-03-30 | 1973-07-03 | Composite Sciences | Coating metallic substrate with powdered filler and molten metal |
| CN103350224A (en) * | 2013-06-18 | 2013-10-16 | 江苏和昊激光科技有限公司 | Special nickel metal ceramal powder for laser cladding of crankshaft |
| CN104593766A (en) * | 2014-12-15 | 2015-05-06 | 江苏中科大港激光科技有限公司 | Laser preparation method of erosion-resistant surface layer of spherical body of ball valve in coal chemical industry |
| CN204646234U (en) * | 2015-04-10 | 2015-09-16 | 山东天工岩土工程设备有限公司 | A kind of high-wear-resistance mining pick |
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