CN108342729A - A kind of intensifying method of pallet heat insulating mattress - Google Patents
A kind of intensifying method of pallet heat insulating mattress Download PDFInfo
- Publication number
- CN108342729A CN108342729A CN201810275207.8A CN201810275207A CN108342729A CN 108342729 A CN108342729 A CN 108342729A CN 201810275207 A CN201810275207 A CN 201810275207A CN 108342729 A CN108342729 A CN 108342729A
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- CN
- China
- Prior art keywords
- heat insulating
- insulating mattress
- pallet
- annealing
- intensifying method
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Classifications
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- 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
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laser Beam Processing (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of intensifying method of pallet heat insulating mattress, its steps include mainly：(1) it polished heat insulating mattress surface, cleaned, and preheated；(2) alloyage powder, and be uniformly mixed；(3) heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool and carries out laser melting coating；(4) stress relief annealing is carried out after cladding；(5) heat insulating mattress after annealing is detected a flaw and is machined.Present invention process is simple, energy conservation and environmental protection, is remarkably improved the hardness, wearability and high temperature oxidation resistance of pallet heat insulating mattress, realizes the reinforcing to heat insulating mattress surface, and the service life is longer, reduces the production cost of enterprise.
Description
The present invention relates to a kind of machining process for technical field.
Core component of the background technology pallet as sintering machine, plays to pass the working efficiency of sintering machine
Important role.And the main reason for pallet damage is falling off for heat insulating mattress, and then fire grate bar is caused to fall off, to cause
Funnel blockade, scuffing belt, girder scaling loss grade are made trouble former.So solving the problems, such as falling off for heat insulating mattress, extend making for heat insulating mattress
It is most important with the service life.The main reason for heat insulating mattress falls off be：(1) fatigue rupture caused by work bad border is severe；(2) it is being sintered
In the process, the temperature of burning zone, which improves, and heat insulating mattress accelerates autoxidation in the condition of high temperature for a long time causes heat insulating mattress scaling loss to be lost
Effect；(3) thickness of feed layer, which improves, causes the pressure-bearing of heat insulating mattress to increase and then aggravation is impacted and worn caused by heat insulating mattress.
It is to prevent pallet heat insulating mattress from falling off in recent years, the main direction of studying of technical staff is to change the shape of heat insulating mattress
Shape, it can no doubt be slowed down and fall off by changing heat insulating mattress shape, but it still can burning, abrasion, heat insulating mattress can not falling off
Initial failure.It is difficult to replace heat insulating mattress, also waste of resource, increases production cost.
Invention content the purpose of the present invention is to provide it is a kind of it is simple for process, controllability is strong, energy conservation and environmental protection, of low cost
Pallet heat insulating mattress intensifying method.
Technical scheme is as follows：
(1) heat insulating mattress surface is pre-processed, using polishing, cleans and remove the corrosion on heat insulating mattress surface, greasy dirt, oxygen
Change the impurity such as skin, and heat insulating mattress is preheated, 300~400 DEG C of preheating temperature preheats 2~3 hours；
(2) alloyage powder, by mass percentage for：Nickel-base alloy 85~92%, Al2O38~15% prepare, described
The chemical composition mass percent of nickel-base alloy be：C 0.5~1.1%, Cr 15~20%, Si 3.5~5.5%, B 3.0
~4.5%, Fe 4.0~5.0%, Ni surpluses；And be put into mechanical meal mixer and mix 2 hours, powder size is 45~106 μ
m；
(3) heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, sets laser cladding technological parameter,
Using gravity powder feeding, laser scanning processing, the laser cladding technological parameter are carried out：Power P=2500~3500W, rectangle
Hot spot is 2 × 14mm, overlapping rate 45%, scan velocity V=200~500mm/min, and alloy powder thickness is 0.8~2mm；Together
When the molten bath in cladding process is protected using argon gas, heat insulating mattress surface obtain nickel based metal ceramal layer thickness
For 0.5~1.7mm；
(4) stress relief annealing is carried out in heat-treatment furnace to the heat insulating mattress after cladding；The annealing temperature 300~400
DEG C, annealing time 5~6 hours；
(5) heat insulating mattress after cladding surface dye penetrant inspection and be machined, with ensure heat insulating mattress size,
Shape, precision and surface quality are satisfied by requirement.
Compared with the prior art, the present invention has the following advantages：
1, simple for process, controllability is strong, and the scope of application is wide, at low cost and energy conservation and environmental protection, is suitble to use of large-scale production；
2, the heat insulating mattress after strengthening is conducive to subsequent mechanical processing without thermal deformation, is smelting between cladding alloy-layer and matrix
Gold combines, and bond strength is big and alloy-layer does not have the defects of crackle, stomata；
3, alloy-layer crystal grain is tiny, dense structure.There are undissolved Al in alloy-layer2O3And chromium carbide hard
Hardening constituent and Ni-based supersaturated solid solution, hence it is evident that improve hardness, antifatigue abrasion and the high temperature oxidation resistance of material, extend
The service life of heat insulating mattress, to reducing the cost of enterprise.
4, after heat insulating mattress laser melting coating, the microhardness of strengthening layer is 6 times of matrix, and total wear rate is matrix wear rate
1/6, high temperature oxidation resistance has also obtained significant raising, and service life improves 3 times or more.
Specific implementation mode
Embodiment 1
Heat insulating mattress surface is pre-processed first, using polishing, clean remove the corrosion on heat insulating mattress surface, greasy dirt,
The impurity such as oxide skin, and heat insulating mattress is preheated, 300 DEG C of preheating temperature preheats 2 hours；Alloyage powder, by mass percentage
For：Nickel-base alloy 85%, Al2O315% prepares, and is put into mechanical meal mixer and mixes 2 hours, and powder size is 45~106
μm；The chemical composition mass percent of the nickel-base alloy is：C 0.5%, Cr 15%, Si 3.5%, B 3.0%, Fe
4.0%, Ni surpluses；Heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, setting laser melting and coating process ginseng
Number：Power P=2500W, rectangular light spot are 2 × 14mm, overlapping rate 45%, scan velocity V=200mm/min, and alloy powder is thick
Degree is 0.8mm；Using gravity powder feeding, laser scanning processing is carried out, while being protected using argon gas to the molten bath in cladding process
Shield, the thickness that nickel based metal ceramal layer is obtained on heat insulating mattress surface are 0.5mm；To the heat insulating mattress after cladding in heat-treatment furnace
Middle carry out stress relief annealing, 300 DEG C of annealing temperature, annealing time 5 hours；Surface dye penetrant inspection is carried out to the heat insulating mattress after annealing
And be machined, to ensure that size, shape, precision and the surface quality of heat insulating mattress are satisfied by requirement.
Embodiment 2
Heat insulating mattress surface is pre-processed first, using polishing, clean remove the corrosion on heat insulating mattress surface, greasy dirt,
The impurity such as oxide skin, and heat insulating mattress is preheated, 400 DEG C of preheating temperature preheats 3 hours；Alloyage powder, by mass percentage
For：Nickel-base alloy 92%, Al2O38% prepares, and is put into mechanical meal mixer and mixes 2 hours, and powder size is 45~106 μ
m；The chemical composition mass percent of the nickel-base alloy is：C 1.1%, Cr 20%, Si 5.5%, B 4.5%, Fe
5.0%, Ni surpluses；Heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, setting laser melting and coating process ginseng
Number：Power P=3500W, rectangular light spot are 2 × 14mm, overlapping rate 45%, scan velocity V=500mm/min, and alloy powder is thick
Degree is 2mm；Using gravity powder feeding, laser scanning processing is carried out, while being protected using argon gas to the molten bath in cladding process,
The thickness that nickel based metal ceramal layer is obtained on heat insulating mattress surface is 1.7mm；To the heat insulating mattress after cladding in heat-treatment furnace
Carry out stress relief annealing, 400 DEG C of annealing temperature, annealing time 6 hours；Surface dye penetrant inspection is carried out simultaneously to the heat insulating mattress after annealing
It is machined, to ensure that size, shape, precision and the surface quality of heat insulating mattress are satisfied by requirement.
Embodiment 3
Heat insulating mattress surface is pre-processed first, using polishing, clean remove the corrosion on heat insulating mattress surface, greasy dirt,
The impurity such as oxide skin, and heat insulating mattress is preheated, 300 DEG C of preheating temperature preheats 2 hours；Alloyage powder, by mass percentage
For：Nickel-base alloy 85%, Al2O315% prepares, and is put into mechanical meal mixer and mixes 2 hours, and powder size is 45~106
μm；The chemical composition mass percent of the nickel-base alloy is：C 1.1%, Cr 20%, Si 5.5%, B 4.5%, Fe
5.0%, Ni surpluses；Heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, setting laser melting and coating process ginseng
Number：Power P=3000W, rectangular light spot are 2 × 14mm, overlapping rate 45%, scan velocity V=350mm/min, and alloy powder is thick
Degree is 1.5mm；Using gravity powder feeding, laser scanning processing is carried out, while being protected using argon gas to the molten bath in cladding process
Shield, the thickness that nickel based metal ceramal layer is obtained on heat insulating mattress surface are 1.2mm；To the heat insulating mattress after cladding in heat-treatment furnace
Middle carry out stress relief annealing, 400 DEG C of annealing temperature, annealing time 6 hours；Surface dye penetrant inspection is carried out to the heat insulating mattress after annealing
And be machined, to ensure that size, shape, precision and the surface quality of heat insulating mattress are satisfied by requirement.
Embodiment 4
Heat insulating mattress surface is pre-processed first, using polishing, clean remove the corrosion on heat insulating mattress surface, greasy dirt,
The impurity such as oxide skin, and heat insulating mattress is preheated, 380 DEG C of preheating temperature preheats 2.5 hours；Alloyage powder, by quality percentage
Than for：Nickel-base alloy 90%, Al2O310% prepares, and is put into mechanical meal mixer and mix 2 hours, powder size for 45~
106μm；The chemical composition mass percent of the nickel-base alloy is：C 0.8%, Cr 18%, Si 4.5%, B 4.0%,
Fe 4.5%, Ni surpluses；Heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, laser melting and coating process is set
Parameter：Power P=3300W, rectangular light spot are 2 × 14mm, overlapping rate 45%, scan velocity V=400mm/min, alloy powder
Thickness is 1.8mm；Using gravity powder feeding, laser scanning processing is carried out, while being carried out using argon gas to the molten bath in cladding process
Protection, the thickness that nickel based metal ceramal layer is obtained on heat insulating mattress surface are 1.5mm；Heat insulating mattress after cladding is being heat-treated
Stress relief annealing, 400 DEG C of annealing temperature, annealing time 6 hours are carried out in stove；Surface coloring is carried out to the heat insulating mattress after annealing to visit
Hinder and be machined, to ensure that size, shape, precision and the surface quality of heat insulating mattress are satisfied by requirement.
Claims (4)
1. a kind of intensifying method of pallet heat insulating mattress, it is characterized in that：It includes the following steps：
(1) heat insulating mattress surface is pre-processed, using polishing, cleans and remove the corrosion on heat insulating mattress surface, greasy dirt, oxide skin
Equal impurity, and heat insulating mattress is preheated, 300~400 DEG C of preheating temperature preheats 2~3 hours；
(2) alloyage powder, by mass percentage for：Nickel-base alloy 85~92%, Al2O38~15% prepare, and are put into machine
It is mixed 2 hours in tool formula meal mixer, powder size is 45~106 μm；
(3) heat insulating mattress is fixed on high-power semiconductor laser numerical control machine tool, sets laser cladding technological parameter, used
Gravity powder feeding is carried out laser scanning processing, while being protected using argon gas to the molten bath in cladding process, on heat insulating mattress surface
The thickness for obtaining nickel based metal ceramal layer is 0.5~1.7mm；
(4) stress relief annealing is carried out in heat-treatment furnace to the heat insulating mattress after cladding；
(5) surface dye penetrant inspection is carried out to the heat insulating mattress after annealing and be machined.
2. the intensifying method of pallet heat insulating mattress according to claim 1, it is characterised in that：The nickel-base alloy
Chemical composition mass percent is：C 0.5~1.1%, Cr 15~20%, Si 3.5~5.5%, B 3.0~4.5%, Fe
4.0~5.0%, Ni surpluses.
3. the intensifying method of pallet heat insulating mattress according to claim 1, it is characterised in that：The laser melting coating work of setting
Skill parameter is：Power P=2500~3500W, rectangular light spot be 2 × 14mm, overlapping rate 45%, scan velocity V=200~
500mm/min, alloy powder thickness are 0.8~2mm.
4. the intensifying method of pallet heat insulating mattress according to claim 1, it is characterised in that：The stress relief annealing temperature
Degree is 300~400 DEG C, annealing time 5~6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275207.8A CN108342729A (en) | 2018-03-30 | 2018-03-30 | A kind of intensifying method of pallet heat insulating mattress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275207.8A CN108342729A (en) | 2018-03-30 | 2018-03-30 | A kind of intensifying method of pallet heat insulating mattress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108342729A true CN108342729A (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810275207.8A Pending CN108342729A (en) | 2018-03-30 | 2018-03-30 | A kind of intensifying method of pallet heat insulating mattress |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202809003U (en) * | 2012-06-07 | 2013-03-20 | 天津英利新能源有限公司 | Thermal field of ingot casting furnace for silicon ingot production |
| CN106756997A (en) * | 2016-12-07 | 2017-05-31 | 山东大学苏州研究院 | A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology |
| CN107502889A (en) * | 2017-08-16 | 2017-12-22 | 重庆市科学技术研究院 | A kind of method at precision laser deposited nickel-base alloy powder end |
-
2018
- 2018-03-30 CN CN201810275207.8A patent/CN108342729A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202809003U (en) * | 2012-06-07 | 2013-03-20 | 天津英利新能源有限公司 | Thermal field of ingot casting furnace for silicon ingot production |
| CN106756997A (en) * | 2016-12-07 | 2017-05-31 | 山东大学苏州研究院 | A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology |
| CN107502889A (en) * | 2017-08-16 | 2017-12-22 | 重庆市科学技术研究院 | A kind of method at precision laser deposited nickel-base alloy powder end |
Non-Patent Citations (2)
| Title |
|---|
| 李瑞峰等: "《非晶复合涂层大功率激光制备技术》", 31 January 2017, 上海交通大学出版社 * |
| 袁涛等: ""Al2O3陶瓷颗粒对镍基合金涂层耐磨性能的影响"", 《上海交通大学学报》 * |
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Application publication date: 20180731 |