CN105256305B - A kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method - Google Patents
A kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method Download PDFInfo
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- CN105256305B CN105256305B CN201510728732.7A CN201510728732A CN105256305B CN 105256305 B CN105256305 B CN 105256305B CN 201510728732 A CN201510728732 A CN 201510728732A CN 105256305 B CN105256305 B CN 105256305B
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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
- C23C24/02—Coating starting from inorganic powder by application of pressure only
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Abstract
The invention discloses a kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method.Epoxy resin is added absolute alcohol stirring, well mixed obtained binding agent by the present invention；Alloy powder is added into stirring in binding agent, is well mixed, slimy alloy mixed slurry is made；The alloy powder forms (wt%)：15.5 19.5Cr, 12.6 16.6Ni, 1.2 1.6Mn, 0.3 0.5Si, 2.2 2.6Mo, surplus Fe；The uniform cold spraying of alloy mixed slurry is overlying on Q235 steel pipe inner walls, is placed in being heated to 80 120 DEG C of dryings in drying box, is incubated 3 6h；After Q235 steel pipes cool to room temperature with the furnace, it is put into high vacuum sintering furnace after 200 400 DEG C are incubated 2 4h, 1,250 1290 DEG C are incubated 0.5 2 hours.The invention provides a kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method thereof, can solve the problems, such as that short current water pipe service life, corrosion-resistant, manufacturing cost and use cost are high.
Description
Technical field
The invention belongs to metal material sintering technology field, and in particular to a kind of cold spraying vacuum-sintering corrosion-resistant pipe closes
Bronze end and preparation method.
Background technology
There is stainless steel material excellent corrosion resistance, wholesomeness, non-corrosive, non-scaling, not dialysis to put foreign matter, self-cleaning
It is good, service life length, environmental protection, it can absolutely recycle, secondary pollution will not be caused to water quality, be that the mankind are fitst water now
One of pipeline material.316L stainless steels are low-carbon chromium-nickel austenite type stainless steel, sour to reproducibility and various organic acids, nothing
Machine acid, alkali and salt etc. have good corrosion resistance.316L stainless steels contain the alloying elements such as Cr, Ni and Mo, high temperature oxidation resistance,
Work hardening ability and excellent corrosion resistance, may be used in adverse circumstances, but due to containing a high proportion of nickel in stainless steel
The rare precious metals such as chromium and it is held at high price.At present or it is short, corrosion-resistant to there is iron-based water pipe service life in water pipe industry
Property is poor and the problem of stainless steel water pipe manufacturing cost and use cost is high.And the method for using cold spraying and vacuum-sintering complex technique
Stainless steel coating is coated on carbon steel surface, the composite steel tube of uniform, stable performance the highly corrosion resistant of surface texture can be obtained.
Compared with overall stainless steel tube, its manufacturing cost and use cost substantially reduces, it is expected to for oil, chemical industry and civilian anti-corrosion pipeline neck
Domain.
The content of the invention
An object of the present invention is to provide a kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder, and it can be solved
Iron-based water pipe service life is short at present and corrosion-resistant, the problem of stainless steel waterpipe manufacturing cost and use cost is high.
The cold spraying vacuum-sintering corrosion-resistant pipe alloy powder of the present invention, its wt% compositions are：15.5-19.5Cr、
12.6-16.6Ni, 1.2-1.6Mn, 0.3-0.5Si, 2.2-2.6Mo, surplus Fe.
The second object of the present invention is the preparation side for providing above-mentioned cold spraying vacuum-sintering corrosion-resistant pipe alloy powder
Method, it comprises the following steps：
(1) epoxy resin is added into stirring in absolute alcohol, well mixed, obtained binding agent；
(2) alloy powder is added into stirring in binding agent made from step (1), be well mixed, slimy alloy is made
Mixed slurry；The alloy powder wt% is formed：15.5-19.5Cr、12.6-16.6Ni、1.2-1.6Mn、0.3-0.5Si、
2.2-2.6Mo, surplus Fe；
(3) the uniform cold spraying of alloy mixed slurry made from step (3) is overlying on Q235 steel pipe inner walls, is placed in drying
80-120 DEG C of drying is heated in case, is incubated 3-6h；
(4) after Q235 steel pipes cool to room temperature with the furnace, it is put into high vacuum sintering furnace after 200-400 DEG C is incubated 2-4h,
1250-1290 DEG C of insulation 0.5-2 hour.
Specifically, in step (1) described binding agent, 0.06-0.15g epoxy resin and 2- are contained per a binding agent
4ml absolute alcohols.
Specifically, the addition of step (2) described alloy powder is to add 10-20g in every a binding agent.
The present invention by by cold spraying vacuum-sintering corrosion-resistant pipe with alloy powder cold spraying on Q235 steel pipe inner walls, very
Sky sintering is prepared highly corrosion resistant, the composite steel tube of high intensity.Because cold spraying vacuum-sintering corrosion-resistant pipe is in vacuum
Sintering furnace is made, and the problems such as in the absence of the surface oxidation in spraying process, pollution, uneven coating performance, is effectively improved
The corrosion resistance and bond strength of cladding layer.The present invention compared with prior art, there is following significant difference：
(1) compared with overall stainless steel tube, the special preparation method of the corrosion-resistant multiple tube of cold spraying vacuum-sintering, Neng Gou great
The use of stainless composition of steel raw material is reduced greatly, so as to reduce production cost, and sintering process smoke dust, pollution, using neck
Domain is more extensive.The method both can be used for the production of new steel pipe, can be used for again in the reparation with steel pipe.
(2) compared with common steel tube, the corrosion-resistant multiple tube inner-walls of duct of cold spraying vacuum-sintering is smooth, and long-term use will not
Incrustation, it is not easy by bacterium pickup, without worrying that water quality is impacted, can more prevents the secondary pollution of water, and with good resistance to height
Warm, corrosion resistant performance, substantially increases its service life.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.
The embodiment of the present invention is using alloy powder, epoxy resin, absolute alcohol, Q235 steel pipes as material.
Alloy powder wherein of the present invention forms (wt%)：15.5-19.5Cr、12.6-16.6Ni、1.2-1.6Mn、0.3-
0.5Si, 2.2-2.6Mo, surplus Fe, each ingredient percent summation of the above are 100%.
The preparation method of present invention alloy powder is as follows：
Step 1：Contain 0.06-0.15g epoxy resin by every a binding agent, and add absolute alcohol 2-4ml stirring,
It is well mixed, binding agent is made；
Step 2：Alloy powder is mixed into binding agent and stirs, is well mixed, muddy alloy mixed slurry is made；It is each
Mixed alloy powder is 10-20g in part binding agent；
Step 3：The uniform cold spraying of alloy mixed slurry is overlying on Q235 steel pipe inner walls, is placed in being heated in drying box
80-120 DEG C of drying, it is incubated 3-6h；
Step 4：After Q235 steel pipes cool to room temperature with the furnace, it is put into high vacuum sintering furnace and is incubated 2-4h at 200-400 DEG C
Afterwards, 1250-1290 DEG C of insulation 0.5-2 hour.
Embodiment 1：
Q235 length of steel pipe is 30mm, a diameter of 30mm, thick 3mm.Alloy powder 10g, epoxy resin 0.06g, no watery wine
Smart 2ml.Uniformly cold spraying is overlying on Q235 steel pipe inner walls after alloy powder, epoxy resin are well mixed with absolute alcohol, is closed
Bronze end coating thickness is 3.5mm, drying time 3h, 120 DEG C of drying temperature, is put into high vacuum sintering furnace in 200 DEG C of insulations
After 4h, 1250 DEG C of insulation 2h.Measure sintered article coating layer thickness 0.73mm.Electrochemistry survey is carried out with CS350 electrochemical workstations
Examination, corrosive liquid is 3.5wt%NaCl solution, is scanned with 1mV/s speed, corroded area 1cm2, electric potential scanning section
For -0.1~1V.Measure corrosion electric current density I0：1.45E-7A/cm2, corrosion potential E0:- 0.135V.
Embodiment 2：
Q235 length of steel pipe is 30mm, a diameter of 50mm, thick 5mm.Alloy powder 20g, epoxy resin 0.15g, no watery wine
Smart 4ml.Uniformly cold spraying is overlying on Q235 steel pipe inner walls after alloy powder, epoxy resin are well mixed with absolute alcohol, is closed
Bronze end coating thickness is 4.0mm, drying time 6h, 80 DEG C of drying temperature, is put into high vacuum sintering furnace and is incubated 2h at 400 DEG C
Afterwards, 1290 DEG C of insulation 0.5h.Measure sintered article coating layer thickness 0.78mm.Electro-chemical test is carried out as described in Example 1, is surveyed
Obtain corrosion electric current density I0：1.47E-7A/cm2, corrosion potential E0:- 0.137V.
Embodiment 3：
Q235 length of steel pipe is 20mm, a diameter of 60mm, thick 6mm.Alloy powder 40g, epoxy resin 0.3g, absolute alcohol
8ml.Uniformly cold spraying is overlying on Q235 steel pipe inner walls after alloy powder, epoxy resin are well mixed with absolute alcohol, alloy
Powder coating thickness is 4.3mm, drying time 4.5h, 100 DEG C of drying temperature, is put into high vacuum sintering furnace in 300 DEG C of insulations
After 3h, 1260 DEG C of insulation 1.5h.Measure sintered article coating layer thickness 0.82mm.Electro-chemical test is carried out as described in Example 1,
Measure corrosion electric current density I0：1.49E-7A/cm2, corrosion potential E0:- 0.142V.
Embodiment 4：
Q235 length of steel pipe is 80mm, a diameter of 100mm, thick 8mm.Alloy powder 120g, epoxy resin 0.9g, no watery wine
Smart 24ml.Uniformly cold spraying is overlying on Q235 steel pipe inner walls after alloy powder, epoxy resin are well mixed with absolute alcohol, is closed
Bronze end coating thickness is 5.0mm, drying time 5h, 100 DEG C of drying temperature, is put into high vacuum sintering furnace in 350 DEG C of insulations
After 2.5h, 1270 DEG C of insulation 1.0h.Measure sintered article coating layer thickness 1.05mm.Electrochemistry survey is carried out as described in Example 1
Examination, measures corrosion electric current density I0：1.47E-7A/cm2, corrosion potential E0:- 0.141V.
Described above is only the better embodiment to the present invention, not makees any formal limit to the present invention
System, any simple modification that every technical spirit according to the present invention is made to embodiment of above, equivalent variations and modification,
Belong in the range of technical solution of the present invention.
Claims (3)
1. a kind of method using cold spraying vacuum-sintering corrosion-resistant pipe with alloy powder prepares coating, including cold spraying vacuum are burnt
Corrosion-resistant pipe alloy powder is tied, its wt% compositions are：15.5-19.5Cr、12.6-16.6Ni、1.2-1.6Mn、0.3-
0.5Si, 2.2-2.6Mo, surplus Fe；It is characterized in that comprise the following steps：
(1) epoxy resin is added into absolute alcohol stirring, well mixed, obtained binding agent；
(2) alloy powder is added into stirring in binding agent made from step (1), be well mixed, slimy alloy mixing is made
Slurry；
(3) the uniform cold spraying of alloy mixed slurry made from step (2) is overlying on Q235 steel pipe inner walls, be placed in drying box
80-120 DEG C of drying is heated to, is incubated 3-6h；
(4) after Q235 steel pipes cool to room temperature with the furnace, it is put into high vacuum sintering furnace after 200-400 DEG C is incubated 2-4h, 1250-
1290 DEG C of insulation 0.5-2 hours.
2. the method for cold spraying vacuum-sintering corrosion-resistant pipe alloy powder prepares coating is used according to claim 1, its
It is characterised by：In step (1) described binding agent, epoxy resin and the 2-4ml that 0.06-0.15g is contained per a binding agent are anhydrous
Alcohol.
3. the method for cold spraying vacuum-sintering corrosion-resistant pipe alloy powder prepares coating is used according to claim 2, its
It is characterised by：The addition of step (2) described alloy powder is to add 10-20g in every a binding agent.
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| CN201510728732.7A CN105256305B (en) | 2015-10-31 | 2015-10-31 | A kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method |
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|---|---|---|---|
| CN201510728732.7A CN105256305B (en) | 2015-10-31 | 2015-10-31 | A kind of cold spraying vacuum-sintering corrosion-resistant pipe alloy powder and preparation method |
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| CN105256305A CN105256305A (en) | 2016-01-20 |
| CN105256305B true CN105256305B (en) | 2018-03-06 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5603072A (en) * | 1993-11-15 | 1997-02-11 | Daido Tokushuko Kabushiki Kaisha | Method for producing Fe-based sintered body with high-corrosion resistance |
| CN1733961A (en) * | 2004-08-11 | 2006-02-15 | 江门市威霖贸易有限公司 | Plasma spray welding Fe matrix alloy powder for high-performance air valve, valve sealing surface |
| JP2008297572A (en) * | 2007-05-29 | 2008-12-11 | Sanyo Special Steel Co Ltd | Highly corrosion-resistant powder for thermal spraying superior in exfoliation resistance |
| CN101342647A (en) * | 2008-08-18 | 2009-01-14 | 天津市铸金表面工程材料科技开发有限公司 | Iron-base alloy powder of oxygen acetylene flame jet soldering |
| CN102575331A (en) * | 2009-09-07 | 2012-07-11 | 福吉米株式会社 | Powder for thermal spraying |
| CN103952110A (en) * | 2014-04-03 | 2014-07-30 | 中原工学院 | Double-spraying method for epoxy resin |
| CN104178762A (en) * | 2014-08-21 | 2014-12-03 | 上海电力学院 | Preparation method of tungsten carbide anti-corrosion wear-resistant composite coating |
-
2015
- 2015-10-31 CN CN201510728732.7A patent/CN105256305B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5603072A (en) * | 1993-11-15 | 1997-02-11 | Daido Tokushuko Kabushiki Kaisha | Method for producing Fe-based sintered body with high-corrosion resistance |
| CN1733961A (en) * | 2004-08-11 | 2006-02-15 | 江门市威霖贸易有限公司 | Plasma spray welding Fe matrix alloy powder for high-performance air valve, valve sealing surface |
| JP2008297572A (en) * | 2007-05-29 | 2008-12-11 | Sanyo Special Steel Co Ltd | Highly corrosion-resistant powder for thermal spraying superior in exfoliation resistance |
| CN101342647A (en) * | 2008-08-18 | 2009-01-14 | 天津市铸金表面工程材料科技开发有限公司 | Iron-base alloy powder of oxygen acetylene flame jet soldering |
| CN102575331A (en) * | 2009-09-07 | 2012-07-11 | 福吉米株式会社 | Powder for thermal spraying |
| CN103952110A (en) * | 2014-04-03 | 2014-07-30 | 中原工学院 | Double-spraying method for epoxy resin |
| CN104178762A (en) * | 2014-08-21 | 2014-12-03 | 上海电力学院 | Preparation method of tungsten carbide anti-corrosion wear-resistant composite coating |
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| CN105256305A (en) | 2016-01-20 |
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