CN106555077A - A kind of laser repairing material of pelletizer die - Google Patents
A kind of laser repairing material of pelletizer die Download PDFInfo
- Publication number
- CN106555077A CN106555077A CN201510612578.7A CN201510612578A CN106555077A CN 106555077 A CN106555077 A CN 106555077A CN 201510612578 A CN201510612578 A CN 201510612578A CN 106555077 A CN106555077 A CN 106555077A
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- China
- Prior art keywords
- pelletizer die
- high temperature
- pelletizer
- laser
- die
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Links
- 239000000463 material Substances 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 14
- 229910045601 alloy Inorganic materials 0.000 abstract description 14
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 16
- 230000008018 melting Effects 0.000 description 16
- 238000002844 melting Methods 0.000 description 15
- 230000008439 repair process Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 208000037656 Respiratory Sounds Diseases 0.000 description 7
- 238000005253 cladding Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 238000012387 aerosolization Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention discloses a kind of laser repairing material of pelletizer die, and its composition is included
Cr
, also include
W
、
C
、
Mo
、
Mn
、
Fe
、
Ti
、
Ni
, the mass percent of wherein each component is：
Cr
：
20~25%
；
W
：
10~15%
；
Mo
：
10~12%
；
Fe:0.2~1%
；
Mn
：
0.1~0.9%
；
C:0.1~0.8%
；
Ti:0.1~1%
；
Ni
：Surplus.The present invention is by adding alloy substrate intensified element, crystal grain refinement and boundary-strengthening element; and adjust the degree of each element; reinforced alloys matrix; grain boundary quality is improved again; alloy is made to obtain good combination property; it is achieved thereby that pelletizer die has good high temperature resistant, compressive resistance, resistance to high temperature oxidation and the preferable objective of toughness.
Description
Technical field
The present invention relates to a kind of high temperature resistant, compressive resistance, the laser repairing material with superior cladding performance, more particularly to a kind of petrochemical industry（Mainly plastic）The laser repairing material of pelletizer die.
Background technology
Device template making technique complexity in the comminutor of petrochemical industry, production cost are high, the cycle is long, belong to the product that high-volume is used in plastic industry.Middle is hollow-core construction; material is high-temperature rigid alloy; the pelletizer die continuous firing under 200～300 DEG C of high temperature for a long time; burning temperature of cleaning is 390 DEG C; template burning clearance time is 12 hours; working media hot coal oil pressure is 5-8kg, and material pressure is 200 kg, and the effect of high-temperature oxydation, cool-hot fatigue and compression shock is subject during work; therefore; easily there is crackle in pelletizer die, once and there is crackle, then oil leakage phenomenon occurs; will be unable to be continuing with, need to be changed.
With the continuous speedup of the growth requirement of China's plastic; major part pelletizer die is run all under event of overload at present; the fault rate of pelletizer die is also continuously increased; and more than 80% need to change granulator device template in pelletizer die maintenance process; it is annual about to change more than thousands of times, therefore, in order to reduce the maintenance cost of granulator device template; accelerate the maintenance duration, it is desirable to pelletizer die must be repaired.
Therefore, appropriate pelletizer die repair materials are selected, it is ensured that the use requirement of the pelletizer die that thermal deformation is little, standardization is by force and after reparation of the pelletizer die after reparation, is current problem urgently to be resolved hurrily.
Laser melting coating recovery technique has obtained rapid popularization and extensively application in recent years as a kind of advanced re-manufacturing technology.
The characteristics of laser melting coating recovery technique utilizes high energy laser beam focused energy high, moment by substrate surface it is preset or with laser synchronization send automatically it is putting, be completely melt with specific physical, chemistry or the alloy powder of mechanical property, base material part fusing simultaneously, form a kind of new compound material, rapid solidification after laser beam flying, the fine and close coating with matrix metallurgical binding is obtained, to reach the purpose for recovering physical dimension and surface peening.Therefore search out the appropriate method that pelletizer die is repaired by the way of laser melting coating and still need to the research work that those skilled in the art further makes creativeness.
Due to current foreign countries' comminutor itself, generally selection is high temperature alloy during fabrication; which cannot be repaired both at home and abroad; therefore; the applicant is through long-term theory analysis and substantial amounts of test; a kind of special repair materials of laser repairing for comminutor are invented; in conjunction with this advanced re-manufacturing technology of laser melting coating, prepare a kind of special coating and apply on pelletizer die trigger, can be with effectively solving the problems referred to above.
The content of the invention
It is an object of the invention to solve the problems referred to above of prior art presence; by Improvement repeatedly; give a kind of laser repairing material of pelletizer die; the repair materials realize the reparation of pelletizer die; and renovation technique is simple to operate, strong adaptability, thermal deformation are little, standardization is strong; pelletizer die after reparation meets use requirement, and the maintenance cost to reducing pelletizer die is of great value.
This repair materials with high temperature resistant, the laser repairing comminutor of compressive resistance that the present invention is provided, repair comminutor crack site for the method using laser melting coating.The repair materials improve the high temperature oxidation resistance in cladding region by adding more Cr, carry out alloy substrate reinforcing especially by the one kind in W, Mo element is at least added, have high temperature oxidation resistance so as to have good high temperature resistant and compressive resistance.
The technical scheme that the present invention is given is：A kind of laser repairing material of pelletizer die, its composition include Cr；W, C, Mo, Mn, Fe, Ti, Ni, wherein each component are included also（Mass percent）For.
Cr：20~25%；W：10~15%；Mo ：10~12%；Fe :0.2~1%；Mn：0.1~0.9%；C: 0.1~0.8%；Ti:0.1~1%；Ni：Surplus.
The present invention increases high temperature oxidation resistance by adding Cr elements；Select alloy substrate element, crystal grain refinement boundary-strengthening element, the degree of control each group element, alloy powder is made to obtain superior performance, and then realize alloy in the premise for ensureing hardness, there is good corrosion resistance and high temperature oxidation resistance simultaneously, the metallurgical bonding layer of densification is formed with memorial archway base material, the requirement of laser melting coating memorial archway reparation is met.
The material that the present invention is given is prepared by operations such as vacuum melting, vacuum aerosolization, screenings, and granularity is -100+220 mesh.
The Co-based alloy powder that the present invention is given, it is adaptable to Full solid-state solid laser, repairing using the melting and coating process parameter of the dusty material be：Laser melting coating is carried out using 5KW gas lasers, full-automatic spin rotating tooling, laser melting coating parameter is：Power 3000-5000W, light 3 ~ 4mm of board diameter, cladding 0.5 ~ 1mm of thickness, cladding speed 8-10mm/s.
Compared with prior art, the invention has the beneficial effects as follows.
1. add alloy substrate intensified element, crystal grain refinement and boundary-strengthening element, and adjust the degree of each element.By reinforcing means, reinforced alloys matrix, grain boundary quality is improved again, make alloy obtain good combination property.It is achieved thereby that pelletizer die has good high temperature resistant, compressive resistance, resistance to high temperature oxidation and the preferable objective of toughness, technology stability and homogeneity of ingredients, the requirement of the intensity of comminutor laser melting coating is met.
2. by adding larger amount of Cr elements, the high temperature oxidation resistance after the material laser cladding is improved, it is ensured that cladding region does not continue high-temperature oxydation under the operating mode of High Temperature High Pressure, improves the quality that device is repaired.
By the detection of carrying out flaw detection, pressure detecting and actual motion, 3 pelletizer dies after repair, prove that the high temperature resistant of the material, compressive resistance degree meet the requirement that memorial archway is used, repair position and do not occur crackle again.
Specific embodiment
Embodiment 1.
The repair process of Shanghai petrochemical plant pelletizer die.
Pelletizer die degree of impairment：There are three Cracks of presence around near 4PE device template bolts hole, crack length is respectively：5mm, 10mm, 20mm.
Hydraulic pressure or oil pressure detection pelletizer die crackle concrete condition are carried out first, mechanical chipping crackle, are exposed comminutor matrix metallic luster itself, are carried out laser melting coating using the material.Laser melting coating is carried out using 5KW gas lasers, full-automatic spin rotating tooling, laser melting coating parameter is：Power 3000-5000W, light 3 ~ 4mm of board diameter, cladding 0.5 ~ 1mm of thickness, cladding speed 8-10mm/s.
Composition is： Cr：23%；W: 12%；Mo: 11%;C: 0.3%;Fe :0.2%；Mn：0.3%；Ti:0.45%； Ni：Surplus.
After laser melting coating, machining recovers pelletize machined surface, reaches use requirement.Jing pressure detectings are qualified, used, and run to certain time limit（For 2 years）Detect again afterwards, still no crackle.Prove that the high temperature resistant of the material, compressive resistance comply fully with design objective.
The professional equipment of the 5KW gas lasers that adopt in the laser melting coating of above-mentioned technical proposal, full-automatic spin rotating tooling for the existing industry.
Present invention achieves the reparation of pelletizer die crackle; and this renovation technique is simple to operate, strong adaptability, thermal deformation are little, standardization is strong; pelletizer die after reparation meets normal use requirement, and the reduction to the plastic maintenance of equipment cost of petrochemical industry is of great value.
Claims (1)
1. the laser repairing material of a kind of pelletizer die, it is characterised in that its composition includes Cr, also includes W, C, Mo, Mn, Fe, Ti, Ni, wherein each component（Mass percent）For：
Cr 20 ~ 25%, W 10 ~ 15%, Mo 10 ~ 12%, Fe 0.2 ~ 1%, Mn 0.1 ~ 0.9%, C 0.1 ~ 0.8%, Ti 0.1 ~ 1%, Ni are surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510612578.7A CN106555077B (en) | 2015-09-24 | 2015-09-24 | A kind of laser repairing material of pelletizer die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510612578.7A CN106555077B (en) | 2015-09-24 | 2015-09-24 | A kind of laser repairing material of pelletizer die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106555077A true CN106555077A (en) | 2017-04-05 |
| CN106555077B CN106555077B (en) | 2018-08-07 |
Family
ID=58413568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510612578.7A Active CN106555077B (en) | 2015-09-24 | 2015-09-24 | A kind of laser repairing material of pelletizer die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106555077B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453214A (en) * | 2019-08-29 | 2019-11-15 | 上海材料研究所 | A kind of laser cladding method of nickel-base alloy laser cladding powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368239A (en) * | 2007-08-17 | 2009-02-18 | 北京有色金属研究总院 | Nickel base alloy and stainless steel valve with nickel base alloy layer sealing surface, and production method thereof |
| CN102021565A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | method for repairing supercharger nozzle ring of internal-combustion engine |
-
2015
- 2015-09-24 CN CN201510612578.7A patent/CN106555077B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368239A (en) * | 2007-08-17 | 2009-02-18 | 北京有色金属研究总院 | Nickel base alloy and stainless steel valve with nickel base alloy layer sealing surface, and production method thereof |
| CN102021565A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | method for repairing supercharger nozzle ring of internal-combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453214A (en) * | 2019-08-29 | 2019-11-15 | 上海材料研究所 | A kind of laser cladding method of nickel-base alloy laser cladding powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106555077B (en) | 2018-08-07 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170405 Assignee: Shenyang Dalu Laser Complete Equipment Co.,Ltd. Assignor: Shenyang Dalu Laser Technology Co.,Ltd. Contract record no.: X2023210000149 Denomination of invention: A Laser Repair Material for Granulator Template Granted publication date: 20180807 License type: Common License Record date: 20230927 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170405 Assignee: Shenyang Continental Laser Group Co.,Ltd. Assignor: Shenyang Dalu Laser Technology Co.,Ltd. Contract record no.: X2023210000150 Denomination of invention: A Laser Repair Material for Granulator Template Granted publication date: 20180807 License type: Common License Record date: 20231007 |
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| EE01 | Entry into force of recordation of patent licensing contract |