CN107034458B - A kind of enhanced processing method of military launcher girder - Google Patents
A kind of enhanced processing method of military launcher girder Download PDFInfo
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- CN107034458B CN107034458B CN201611211973.5A CN201611211973A CN107034458B CN 107034458 B CN107034458 B CN 107034458B CN 201611211973 A CN201611211973 A CN 201611211973A CN 107034458 B CN107034458 B CN 107034458B
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- powder
- launcher
- girder
- coating
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of enhanced processing methods of military launcher girder, by designing the coated substrate material with girder material surface same composition, and add tungsten carbide material, and use Multilayer Laser Cladding, granularity incrementally increases, the composite cladding powder that WC ratio gradually reduces carries out laser melting coating, so that surface is formd uniform granularity and concentration gradient, improves binding force and intensity.
Description
Technical field
The invention belongs to material surface manufacture fields, more particularly, to a kind of intensive treatment side of military launcher girder
Method.
Background technique
Launcher be hang and fire a rocket for carrier aircraft, the dedicated unit of guided missile etc., have volume big, weight is big, just
Property requires high, and the material load-bearing of the high feature of level of integrated system, launcher is big, and structure is complicated, while needing to bear to emit
When tail gas generate high temperature, current transmitting frame material mostly uses 20CrMnSiA, or directlys adopt carbon carbon composite, the former
It is at low cost, but weight is big, and high temperature resistance is inferior to composite material, and the latter is light, and high temperature resistance is more preferable, but processes complexity,
Cost is high.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of enhanced processing methods of military launcher, using steel knot
Structure, and apply the mode of high temperature coating, improve the high temperature resistance of launcher girder.
The complete technical solution of the present invention includes:
A kind of enhanced processing method of military launcher girder, which comprises the steps of:
1) girder material of the 20CrMnSiA as launcher is selected；
Coating powder preparation: selecting 20CrMnSiA and granularity is the WC powder of 200-240 mesh, prepares different component respectively
Coating powder, comprising:
Firstly, the WC powder and 20CrMnSiA, WC powder of 240 mesh of selection account for the 25-30% of 20CrMnSiA total weight, then
In the case where vacuum degree is 10-4-10-5Pa, vacuum induction melting is carried out, 100-150 DEG C of its fusing point or more is heated to and keeps the temperature 5-
10min, this process is with electromagnetic agitation so that WC powder is uniformly mixed in the melt, and subsequent melt enters spray chamber, to metal
The exit atomizer of liquid sprays high pressure argon gas, and high pressure argon gas collides molten drop, it is made to be broken into spherical powder,
High pressure argon gas pressure is 4-6MPa, enters rewinding pipe through rotational flow settlement after, and the first composite coating powder is obtained after being sieved
Material；
Then the WC powder of 200 mesh of selection and 20CrMnSiA, WC powder account for the 15-20% of 20CrMnSiA total weight, in phase
The second composite coating powder is prepared under the conditions of；
Then the WC powder of 140 mesh of selection and 20CrMnSiA, WC powder account for the 10-15% of 20CrMnSiA total weight, in phase
Third composite coating powder is prepared under the conditions of.
2) 200 purpose the first composite coating powders of selection, 160 purpose the second composite coating powders, the third of 120 mesh are compound
Coated powder is mixed respectively with three kinds of composite coating powders using waterglass and respectively obtains the first, second, third cladding powder.
3) laser cladding coating specifically includes:
Launcher girder is preheating to 150-200 DEG C, and the first cladding powder is applied on launcher girder surface, with a thickness of 0.5-
1mm carries out layer-by-layer laser scanning heating to launcher girder surface using laser, melts the first cladding material and keep its attached
On launcher girder surface, laser power 2.5KW, electric current 300A, laser scanning speed 3-5mm/s, light beam is straight
Diameter is 12.2mm, and cladding process, which leads to argon gas, to be protected to form first coating.
The launcher girder for obtaining first coating is preheating to 150-200 DEG C, the second cladding material is then overlayed on into launcher
Girder surface with a thickness of 1-1.2mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains the second painting
Layer；
The launcher girder for obtaining second coating is preheating to 150-200 DEG C, third cladding material is then overlayed on into launcher
Girder surface with a thickness of 1.0-1.5mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains third
Coating.
The present invention compared with the existing technology the advantages of be: tungsten carbide ceramics material have high fusing point and high temperature resistant energy
Power, while its own has high hardness again, launcher girder material can be made to have heat-resisting ability as coating material,
But Metal-ceramic interface be difficult to it is compound easily lead to that coating binding force is not strong, be always the problem for perplexing engineering staff, the present invention is logical
The coated substrate material of design with girder material surface same composition is crossed, and adds tungsten carbide material, and is molten using multilayer laser
It covers, granularity incrementally increases, and the composite cladding powder that WC ratio gradually reduces carries out laser melting coating, and surface is made to form uniform granularity
And concentration gradient, improve binding force and intensity.
Specific embodiment
The present invention will be further described With reference to embodiment.
A kind of enhanced processing method of military launcher girder, which comprises the steps of:
1) girder material of the 20CrMnSiA as launcher is selected；
2) prepared by coating powder: selecting 20CrMnSiA and granularity is the WC powder of 200-240 mesh, prepare different component respectively
Coating powder, comprising:
Firstly, the WC powder and 20CrMnSiA, WC powder of 240 mesh of selection account for the 25-30% of 20CrMnSiA total weight, then
In the case where vacuum degree is 10-4-10-5Pa, vacuum induction melting is carried out, 100-150 DEG C of its fusing point or more is heated to and keeps the temperature 5-
10min, this process is with electromagnetic agitation so that WC powder is uniformly mixed in the melt, and subsequent melt enters spray chamber, to metal
The exit atomizer of liquid sprays high pressure argon gas, and high pressure argon gas collides molten drop, it is made to be broken into spherical powder,
High pressure argon gas pressure is 4-6MPa, enters rewinding pipe through rotational flow settlement after, and the first composite coating powder is obtained after being sieved
Material；
Then the WC powder of 200 mesh of selection and 20CrMnSiA, WC powder account for the 15-20% of 20CrMnSiA total weight, in phase
The second composite coating powder is prepared under the conditions of；
Then the WC powder of 140 mesh of selection and 20CrMnSiA, WC powder account for the 10-15% of 20CrMnSiA total weight, in phase
Third composite coating powder is prepared under the conditions of.
3) 200 purpose the first composite coating powders of selection, 160 purpose the second composite coating powders, the third of 120 mesh are compound
Coated powder is mixed respectively with three kinds of composite coating powders using waterglass and respectively obtains the first, second, third cladding powder.
4) laser cladding coating specifically includes:
Launcher girder is preheating to 150-200 DEG C, and the first cladding powder is applied on launcher girder surface, with a thickness of 0.5-
1mm carries out layer-by-layer laser scanning heating to launcher girder surface using laser, melts the first cladding material and keep its attached
On launcher girder surface, laser power 2.5KW, electric current 300A, laser scanning speed 3-5mm/s, light beam is straight
Diameter is 12.2mm, and cladding process, which leads to argon gas, to be protected to form first coating.
The launcher girder for obtaining first coating is preheating to 150-200 DEG C, the second cladding material is then overlayed on into launcher
Girder surface with a thickness of 1-1.2mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains the second painting
Layer；
The launcher girder for obtaining second coating is preheating to 150-200 DEG C, third cladding material is then overlayed on into launcher
Girder surface with a thickness of 1.0-1.5mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains third
Coating.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (1)
1. a kind of enhanced processing method of military launcher girder, which comprises the steps of:
1) girder material of the 20CrMnSiA as launcher is selected；
2) prepared by coating powder: selecting 20CrMnSiA and granularity is the WC powder of 200-240 mesh, prepare the painting of different component respectively
Layer powder, comprising:
2.1 firstly, the WC powder and 20CrMnSiA, WC powder of 240 mesh of selection account for the 25-30% of 20CrMnSiA total weight, then
It is 10 in vacuum degree-4-10-5Under Pa, vacuum induction melting is carried out, 100-150 DEG C of its fusing point or more is heated to and keeps the temperature 5-10min,
For this process with electromagnetic agitation so that WC powder is uniformly mixed in the melt, subsequent melt enters spray chamber, goes out to molten metal
Atomizer sprays high pressure argon gas at mouthful, and high pressure argon gas collides molten drop, it is made to be broken into spherical powder, high pressure argon
Atmospheric pressure is 4-6MPa, enters rewinding pipe through rotational flow settlement after, and the first composite coating powder is obtained after being sieved；
The WC powder and 20CrMnSiA, WC powder of 2.2 200 mesh of subsequent selection account for the 15-20% of 20CrMnSiA total weight, in phase
The second composite coating powder is prepared under the conditions of；
The WC powder and 20CrMnSiA, WC powder of 2.3 140 mesh of subsequent selection account for the 10-15% of 20CrMnSiA total weight, in phase
Third composite coating powder is prepared under the conditions of；
3) 200 purpose the first composite coating powders, 160 purpose the second composite coating powders, the third composite coating of 120 mesh are selected
Powder is mixed respectively with three kinds of composite coating powders using waterglass and respectively obtains the first, second, third cladding powder；
4) laser cladding coating specifically includes:
4.1 launcher girders are preheating to 150-200 DEG C, and the first cladding powder is applied on launcher girder surface, with a thickness of 0.5-
1mm carries out layer-by-layer laser scanning heating to launcher girder surface using laser, melts the first cladding material and keep its attached
On launcher girder surface, laser power 2.5KW, electric current 300A, laser scanning speed 3-5mm/s, light beam is straight
Diameter is 12.2mm, and cladding process, which leads to argon gas, to be protected to form first coating；
The launcher girder for obtaining first coating is preheating to 150-200 DEG C by 4.2, and the second cladding material is then overlayed on launcher
Girder surface with a thickness of 1-1.2mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains the second painting
Layer；
The launcher girder for obtaining second coating is preheating to 150-200 DEG C by 4.3, and third cladding material is then overlayed on launcher
Girder surface with a thickness of 1.0-1.5mm, and carries out laser melting coating after baking 0.5h in holding furnace with same process and obtains third
Coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611211973.5A CN107034458B (en) | 2016-12-25 | 2016-12-25 | A kind of enhanced processing method of military launcher girder |
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| CN201611211973.5A CN107034458B (en) | 2016-12-25 | 2016-12-25 | A kind of enhanced processing method of military launcher girder |
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| CN107034458A CN107034458A (en) | 2017-08-11 |
| CN107034458B true CN107034458B (en) | 2019-08-27 |
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| CN110066995A (en) * | 2019-05-31 | 2019-07-30 | 西安文理学院 | A kind of cladding alloy powder and the laser cladding method for carrying out H13 mould steel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054670A (en) * | 2007-05-25 | 2007-10-17 | 浙江工业大学 | Method for fusing and coating high-hardness tungsten carbide coat on metal surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10124250C2 (en) * | 2001-05-18 | 2003-03-27 | Daimler Chrysler Ag | Method of forming a high strength and wear resistant composite layer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054670A (en) * | 2007-05-25 | 2007-10-17 | 浙江工业大学 | Method for fusing and coating high-hardness tungsten carbide coat on metal surface |
Non-Patent Citations (1)
| Title |
|---|
| 激光熔覆H13-TiC梯度复合涂层的制备与组织性能;汤晓丹等;《激光技术》;20100531;第34卷(第3期);第326页右栏第6行-第328页左栏第13行，表2、表3 * |
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Address after: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province Applicant after: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute Address before: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province Applicant before: Qingdao Branch of China Academy of Machinery Science and Technology |
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Address after: 266000 south head of Huiying street, Jiaozhou economic and Technological Development Zone, Qingdao City, Shandong Province Patentee after: China National Academy of Machinery Group Qingdao Branch Co.,Ltd. Address before: 266000 south head of Huiying street, Jiaozhou economic and Technological Development Zone, Qingdao City, Shandong Province Patentee before: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute |
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