CN108359982B - A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating - Google Patents
A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating Download PDFInfo
- Publication number
- CN108359982B CN108359982B CN201810476815.5A CN201810476815A CN108359982B CN 108359982 B CN108359982 B CN 108359982B CN 201810476815 A CN201810476815 A CN 201810476815A CN 108359982 B CN108359982 B CN 108359982B
- Authority
- CN
- China
- Prior art keywords
- petroleum pipeline
- laser
- petroleum
- corrosion
- cladding layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
Abstract
The present invention provides a kind of method that anti-corrosion fusing when solving petroleum pipeline welding based on laser melting coating is failed, the following steps are included: S1. takes the petroleum pipeline of two same models, the end polishing of petroleum pipeline is angled to 45 degree of groove, then petroleum pipeline is pre-processed；S2. cladding layer one is formed with inner wall laser cladding alloy powder of the optical fiber laser to petroleum pipeline, cladding layer one is 100mm at a distance from groove；S3. cladding layer two is formed to the inner wall laser cladding alloy powder at petroleum pipeline groove with optical fiber laser；S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；S5. the groove of two petroleum pipelines is close together to form V word mouth, first of welding is carried out to V word mouth using alloy electrode identical with alloy powder component, then second is carried out in the outside of alloy electrode with common welding rod and welds to form entirety.The problem of leading to anticorrosive paint fusing failure inside pipeline because of heat affecting when the present invention can effectively solve petroleum pipeline welding.
Description
Technical field
The present invention relates to a kind of methods for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating.
Background technique
Since the 1950s, the aseptic technic of oil-gas pipeline is just evolving, main reason is that petroleum
It is low-carbon steel material with most of natural gas line, crude oil, H contained by natural gas in use2O、O2、H2S、O2Deng
It is easily chemically reacted with metal material, in addition, the gravel carried secretly in crude oil generates erosive wear to pipeline, leads to pipe perforation
And leakage, serious property loss is brought to manufacturing enterprise, while huge damage can be also brought to public environment.Therefore, in order to
These serious consequences caused by corrosion are reduced, enhances the service life of oil-gas pipeline, further increases the anti-corrosion skill of oil-gas pipeline
Art is highly important.
There are many anticorrosive paint for meeting the inner coating of oil-gas pipeline, different properties.More there are commonly liquid epoxy paintings
Material, powder epoxy coating, novolac epoxy resin and coal tar epoxy etc..With the development of technology, these anticorrosive paints
The properties such as adhesive force, wear and corrosion behavior, bearing capacity are greatly improved.But above-mentioned each anticorrosive paint has one
Common disadvantage is exactly that high temperature resistance is poor.In pipeline laying construction, using welding fabrication, in pipeline docking area weld bond
And its inner anticorrosioning coating within the scope of the 50mm of both ends is easy heated melt and fails, damages and premature corrosion is caused to perforate.
Application No. is the Chinese inventions of CN201710925399.8 to disclose " a kind of oil field pipe of anti-corrosion anti-scale ", including
Pipe main body, the inner wall of pipe main body are equipped with inner protective layer, and the outer wall of pipe main body is equipped with external protection, external protection
Thickness is greater than the thickness of inner protective layer；Inner protective layer and external protection are brushed by protective coating, the composition of protective coating
Composition is as follows according to parts by weight: 15-20 parts of acrylic resin, 1.5-2 parts of 1,3-butadiene, 3-5 parts of titanium dioxide, ternary second
Third 15-20 parts of rubber, 5-10 parts of white carbon black, 1-6 parts of glass microballoon, 3-8 parts of tetramethylthiuram disulfide, zinc stearate 6-12
Part, 15-22 parts of dimethylbenzene.The invention the problem is that: the bond strength between its protective coating and oil field pipe is not high, resistance to
It is high temperatures poor therefore wear-resisting, anti-corrosion effect is bad, pipeline welding when protective coating be easy fusing failure.
Summary of the invention
The technical problem to be solved in the present invention is to provide anti-corrosions when one kind solves petroleum pipeline welding based on laser melting coating to melt
The method for changing failure, because heat affecting causes anticorrosive paint inside pipeline to melt asking for failure when can effectively solve petroleum pipeline welding
Topic.
In order to solve the above technical problems, the technical scheme is that
A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating, comprising the following steps:
The end polishing of petroleum pipeline is angled 45 degree of groove, so by the petroleum pipeline for S1. taking two same models
Petroleum pipeline is pre-processed afterwards；
S2. cladding layer one, cladding layer one are formed with inner wall laser cladding alloy powder of the optical fiber laser to petroleum pipeline
With at a distance from groove be 100mm, cladding layer one with a thickness of 0.7-1.5mm, laser power 2800-3600kW, spot diameter
For 2mm, scanning speed 600-1000mm/min, overlapping rate 50%, powder sending quantity 20-50g/min, in laser cladding process
Logical argon gas protection, argon flow 15L/min；
S3. cladding layer two is formed to the inner wall laser cladding alloy powder at petroleum pipeline groove with optical fiber laser, melted
Coating two with a thickness of 0.7-1.5mm, laser power 2000-2800kW, spot diameter 5mm, scanning speed 1000-
1400mm/min, overlapping rate 50%, powder sending quantity 30-50g/min lead to argon gas protection, argon flow in laser cladding process
For 16L/min；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy identical with alloy powder component
Welding rod to V word mouth carry out first welding, then with common welding rod the outside of alloy electrode carry out second weld to be formed it is whole
Body.
Further, in step S1 of the present invention, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline.
Further, alloy powder of the present invention is mixed by the base-material and auxiliary material that weight ratio is 99:1, and base-material is
Nickel-base alloy, weight percent composition are as follows: chromium 16%, boron 5%, silicon 4%, carbon 12%, cobalt 6%, remaining is nickel；The system of auxiliary material
Preparation Method are as follows:
Yttrium nitrate, cerous nitrate, ferric nitrate are incorporated in distilled water, after being uniformly dissolved be added PVA, hexa,
Citric acid is heated to 85 DEG C after standing 2h, and magnetic agitation uniformly forms colloidal sol afterwards, colloidal sol taking-up is put into drying box, 110 DEG C
Lower drying forms xerogel, and xerogel is put into electric furnace and is calcined, and is warming up to after 300 DEG C with the speed of 1 DEG C/min and keeps the temperature 1h, so
It is warming up to after 800 DEG C with the speed of 2 DEG C/min afterwards and keeps the temperature 1h, taken out after cooled to room temperature, up to auxiliary material after grinding.
Further, in the preparation method of auxiliary material of the present invention, yttrium nitrate, cerous nitrate, ferric nitrate molar ratio be 1:
1:3。
Further, in step S2 of the present invention, the power of optical fiber laser is 5kW.
Further, in step S3 of the present invention, the power of optical fiber laser is 3kW.
Further, in step S4 of the present invention, anticorrosive paint by weight ratio be 15:1 epoxy coating and
POSS is mixed；POSS's the preparation method comprises the following steps:
Ferric trichloride, concentrated hydrochloric acid, methanol, petroleum ether, methylene chloride are added in reaction flask, stirring 1h obtains mixed liquor,
Vinyl trichlorosilane is added in petroleum ether, stirring is added dropwise in mixed liquor to after being completely dissolved, and stirring 48h is reacted
Filtrate one is obtained by filtration in reaction solution by liquid, and filtrate one is placed in liquid separation in separatory funnel and obtains supernatant liquid, by sodium carbonate, chlorine
Change calcium to be added in supernatant liquid, continues stirring and obtain mixed solution for 24 hours, filtrate two is obtained by filtration in mixed solution, by filtrate two
Rotary evaporation recrystallizes the filtrate two after rotary evaporation with methylene chloride, drying to evaporation of stopping rotating when having crystal precipitation
Afterwards up to POSS.
Further, in the preparation method of POSS of the present invention, ferric trichloride, vinyl trichlorosilane, calcium carbonate, chlorine
The weight ratio for changing calcium is 4:2.5:1:1.
Compared with prior art, the invention has the following advantages:
1) present invention mainly uses optical fiber laser in the end cladding alloy powder of petroleum pipeline, with petroleum pipeline inner wall
It generates metallurgical bonding and forms alloy-layer, which has the characteristics such as corrosion-resistant, impact resistance, wear-resistant, anti-oxidant, high temperature resistant,
Efficiently solve existing corrosion-inhibiting coating welding when show poor heat resistance, senile abrasion is serious and shock resistance is weak
Problem.
2) present invention is added to auxiliary material in alloy powder, and it is main former which, which is with yttrium nitrate, cerous nitrate, ferric nitrate,
What material was prepared by sol-gal process, ingredient includes yttrium oxide, cerium oxide and iron oxide, can be further improved alloy-layer
Corrosion-resistant, anti-oxidant aging and shock proof performance.
3) present invention is added to POSS (cage model sesquialter polysiloxanes) in anticorrosive paint, which can effectively improve oil transportation
Interface bond strength between pipe surface and anticorrosive paint, therefore can be further improved the corrosion resistance of petroleum pipeline, in addition,
POSS also can be further improved the wear-resistant and high temperature resistance of petroleum pipeline.
4) present invention in welding step use twice welding sequence, first weld used in alloy electrode and swash
The component of light cladding alloy powder is identical, potential difference corrosion can be eliminated in this way, to further increase the corrosion resistance of alloy-layer
Energy.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1
The method that anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating, comprising the following steps:
The end polishing of petroleum pipeline is angled 45 degree of groove, so by the petroleum pipeline for S1. taking two same models
Petroleum pipeline is pre-processed afterwards, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline.；
S2. the optical fiber laser for being 5kW with power forms cladding layer to the inner wall laser cladding alloy powder of petroleum pipeline
One, cladding layer one is 100mm at a distance from groove, cladding layer one with a thickness of 0.7mm, laser power 2800kW, hot spot is straight
Diameter is 2mm, scanning speed 600mm/min, overlapping rate 50%, powder sending quantity 20g/min, and argon gas is led in laser cladding process
Protection, argon flow 15L/min；
S3. the optical fiber laser for being 3kW with power forms the inner wall laser cladding alloy powder at petroleum pipeline groove
Cladding layer two, cladding layer two with a thickness of 0.7mm, laser power 2000kW, spot diameter 5mm, scanning speed is
1000mm/min, overlapping rate 50%, powder sending quantity 30g/min lead to argon gas protection in laser cladding process, and argon flow is
16L/min；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy identical with alloy powder component
Welding rod to V word mouth carry out first welding, then with common welding rod the outside of alloy electrode carry out second weld to be formed it is whole
Body.
Embodiment 2
Based on laser melting coating solve petroleum pipeline welding when anti-corrosion fusing failure method the following steps are included:
The end polishing of petroleum pipeline is angled 45 degree of groove, so by the petroleum pipeline for S1. taking two same models
Petroleum pipeline is pre-processed afterwards, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline.；
S2. the optical fiber laser for being 5kW with power forms cladding layer to the inner wall laser cladding alloy powder of petroleum pipeline
One, cladding layer one at a distance from groove be 100mm, cladding layer one with a thickness of 1mm, laser power 3200kW, spot diameter
For 2mm, scanning speed 800mm/min, overlapping rate 50%, powder sending quantity 40g/min leads to argon gas in laser cladding process and protects
Shield, argon flow 15L/min；
S3. the optical fiber laser for being 3kW with power forms the inner wall laser cladding alloy powder at petroleum pipeline groove
Cladding layer two, cladding layer two with a thickness of 1mm, laser power 2400kW, spot diameter 5mm, scanning speed 1200mm/
Min, overlapping rate 50%, powder sending quantity 40g/min lead to argon gas protection, argon flow 16L/min in laser cladding process；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy identical with alloy powder component
Welding rod to V word mouth carry out first welding, then with common welding rod the outside of alloy electrode carry out second weld to be formed it is whole
Body.
Embodiment 3
Based on laser melting coating solve petroleum pipeline welding when anti-corrosion fusing failure method the following steps are included:
The end polishing of petroleum pipeline is angled 45 degree of groove, so by the petroleum pipeline for S1. taking two same models
Petroleum pipeline is pre-processed afterwards, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline.；
S2. the optical fiber laser for being 5kW with power forms cladding layer to the inner wall laser cladding alloy powder of petroleum pipeline
One, cladding layer one is 100mm at a distance from groove, cladding layer one with a thickness of 1.5mm, laser power 3600kW, hot spot is straight
Diameter is 2mm, scanning speed 1000mm/min, overlapping rate 50%, powder sending quantity 50g/min, and argon is led in laser cladding process
Gas shielded, argon flow 15L/min；
S3. the optical fiber laser for being 3kW with power forms the inner wall laser cladding alloy powder at petroleum pipeline groove
Cladding layer two, cladding layer two with a thickness of 1.5mm, laser power 2800kW, spot diameter 5mm, scanning speed is
1400mm/min, overlapping rate 50%, powder sending quantity 50g/min lead to argon gas protection in laser cladding process, and argon flow is
16L/min；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy identical with alloy powder component
Welding rod to V word mouth carry out first welding, then with common welding rod the outside of alloy electrode carry out second weld to be formed it is whole
Body.
Embodiment 4
Based on laser melting coating solve petroleum pipeline welding when anti-corrosion fusing failure method the following steps are included:
The end polishing of petroleum pipeline is angled 45 degree of groove, so by the petroleum pipeline for S1. taking two same models
Petroleum pipeline is pre-processed afterwards, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline.；
S2. the optical fiber laser for being 5kW with power forms cladding layer to the inner wall laser cladding alloy powder of petroleum pipeline
One, cladding layer one is 100mm at a distance from groove, cladding layer one with a thickness of 1.2mm, laser power 3300kW, hot spot is straight
Diameter is 2mm, scanning speed 900mm/min, overlapping rate 50%, powder sending quantity 30g/min, and argon gas is led in laser cladding process
Protection, argon flow 15L/min；
S3. the optical fiber laser for being 3kW with power forms the inner wall laser cladding alloy powder at petroleum pipeline groove
Cladding layer two, cladding layer two with a thickness of 1.2mm, laser power 2500kW, spot diameter 5mm, scanning speed is
1100mm/min, overlapping rate 50%, powder sending quantity 45g/min lead to argon gas protection in laser cladding process, and argon flow is
16L/min；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy identical with alloy powder component
Welding rod to V word mouth carry out first welding, then with common welding rod the outside of alloy electrode carry out second weld to be formed it is whole
Body.
Alloy powder in embodiment 1-4 is mixed by the base-material and auxiliary material that weight ratio is 99:1, and base-material is Ni-based conjunction
Gold, weight percent composition are as follows: chromium 16%, boron 5%, silicon 4%, carbon 12%, cobalt 6%, remaining is nickel；The preparation method of auxiliary material
Are as follows:
Yttrium nitrate, cerous nitrate, ferric nitrate that molar ratio is 1:1:3 are incorporated in distilled water, are added after being uniformly dissolved
PVA, hexa, citric acid are heated to 85 DEG C after standing 2h, and magnetic agitation uniformly forms colloidal sol afterwards, and colloidal sol is taken out
It is put into drying box, drying forms xerogel at 110 DEG C, and xerogel is put into electric furnace and is calcined, and is heated up with the speed of 1 DEG C/min
1h is kept the temperature after to 300 DEG C, is then warming up to after 800 DEG C with the speed of 2 DEG C/min and keeps the temperature 1h, is taken out after cooled to room temperature,
Up to auxiliary material after grinding.
In the step S4 of embodiment 1-4, anticorrosive paint by weight ratio be 15:1 epoxy coating and POSS mixing and
At；POSS's the preparation method comprises the following steps:
Ferric trichloride, concentrated hydrochloric acid, methanol, petroleum ether, methylene chloride are added in reaction flask, stirring 1h obtains mixed liquor,
Vinyl trichlorosilane is added in petroleum ether, stirring is added dropwise in mixed liquor to after being completely dissolved, and stirring 48h is reacted
Filtrate one is obtained by filtration in reaction solution by liquid, and filtrate one is placed in liquid separation in separatory funnel and obtains supernatant liquid, by sodium carbonate, chlorine
Change calcium to be added in supernatant liquid, continues stirring and obtain mixed solution for 24 hours, filtrate two is obtained by filtration in mixed solution, by filtrate two
Rotary evaporation recrystallizes the filtrate two after rotary evaporation with methylene chloride, drying to evaporation of stopping rotating when having crystal precipitation
Afterwards up to POSS, ferric trichloride, vinyl trichlorosilane, calcium carbonate, calcium chloride weight ratio be 4:2.5:1:1.
Comparative example 1
Auxiliary material is not included in alloy powder as different from Example 2.
Comparative example 2
POSS is not included in anticorrosive paint as different from Example 2.
Comparative example 3
First of welding sequence is not included in step S5 as different from Example 2.
Reference examples
Reference examples are the embodiments one of the Chinese invention application No. is CN201710925399.8.
Experimental example one: corrosion resistance test
The weld of two petroleum pipelines after the processing of embodiment 1-4, comparative example 1-3 and reference examples is small using 48
When neutral salt spray test method tested in salt-mist corrosion tester, wherein the mass fraction of sodium chloride solution be 5%, pH
Value is 7.0, atomisation pressure 120kPa, and temperature is 35 DEG C, and spray time is 48 hours, calculates weight-loss ratio, weight-loss ratio=(survey
Weight after weight-test before trying)/preceding weight × 100% is tested, weight-loss ratio is smaller to show that corrosion resistance is better.Test result
It is as shown in table 1:
| Weight-loss ratio (%) | |
| Embodiment 1 | 0.16 |
| Embodiment 2 | 0.15 |
| Embodiment 3 | 0.16 |
| Embodiment 4 | 0.16 |
| Comparative example 1 | 0.21 |
| Comparative example 2 | 0.18 |
| Comparative example 3 | 0.20 |
| Reference examples | 0.28 |
Table 1
Table 1 shows, is respectively less than and compares by the weight-loss ratio of embodiment 1-4 treated two petroleum pipeline welds
Example, shows that corrosion resistance is fine, wherein the corrosion resistance of embodiment 2 is best.The part steps and reality of comparative example 1-4
It is different to apply example 2, the weight-loss ratio of comparative example 1,3 has rising, illustrates auxiliary material and first of Welder in alloy powder
Sequence can effectively improve the corrosion resistance of two petroleum pipeline welds；The weight-loss ratio of comparative example 2 slightly rises, explanation
POSS in anticorrosive paint can also play the role of certain raising to corrosion resistance.
Experimental example two: shock resistance test
Test method are as follows: handled with reference to GB/T 229-2007 testing example 1-4, comparative example 1-3 and reference examples
The ballistic work of the weld of two petroleum pipelines afterwards, ballistic work numerical value show that more greatly shock resistance is better, test result such as table 2
It is shown:
Table 2
Table 2 shows, is all larger than by the ballistic work numerical value of the weld of embodiment 1-4 treated two petroleum pipelines
Reference examples show that shock resistance is fine, and wherein the shock resistance of embodiment 2 is best.The part steps of comparative example 1-4
Different from embodiment 2, the ballistic work numerical value of comparative example 1 reduces the auxiliary material much illustrated in alloy powder and can effectively mention
The shock resistance of high two petroleum pipeline welds；The ballistic work numerical value and embodiment 1-4 of comparative example 2,3 maintain an equal level, and say
POSS and first of welding sequence in bright anticorrosive paint do not influence shock resistance.
Experimental example three: abrasion resistance properties test
Wear test is carried out with omnipotent abrasion machine and tests out embodiment 1-4, comparative example 1-3 and reference examples processing
The weight-loss ratio of the weld of two petroleum pipelines afterwards, friction pair material GCr15, frrction load 300N, revolving speed 100rpm,
Temperature is 25 DEG C, and fraction time is 1 hour, weight-loss ratio, and=(weight after weight-test before testing)/tests preceding weight × 100%,
Weight-loss ratio is smaller to show that abrasion resistance properties are better.Test result is as shown in table 3:
| Weight-loss ratio (%) | |
| Embodiment 1 | 0.092 |
| Embodiment 2 | 0.096 |
| Embodiment 3 | 0.097 |
| Embodiment 4 | 0.095 |
| Comparative example 1 | 0.096 |
| Comparative example 2 | 0.109 |
| Comparative example 3 | 0.118 |
| Reference examples | 0.131 |
Table 3
Table 3 shows, is all larger than control by the weight-loss ratio of the weld of embodiment 1-4 treated two petroleum pipelines
Example, shows that abrasion resistance properties are fine, wherein the abrasion resistance properties of embodiment 2 are best.The part steps and reality of comparative example 1-4
It is different to apply example 2, the weight-loss ratio of comparative example 2,3 rises, and illustrates POSS and first of weldering in anticorrosive paint
The abrasion resistance properties of two petroleum pipeline welds can be effectively improved by connecing process；The weight-loss ratio and embodiment of comparative example 1
1-4 maintains an equal level, and illustrates that the auxiliary material in alloy powder does not influence abrasion resistance properties.
Experimental example four: anti-oxidant aging performance test
The weld of two petroleum pipelines after the processing of embodiment 1-4, comparative example 1-3 and reference examples is placed in 1200
DEG C air in keep the temperature 6h, calculate rate of body weight gain, weight before rate of body weight gain=(weight before weight-test after test)/test ×
100%, rate of body weight gain is smaller to show that anti-oxidant aging performance is better.Test result is as shown in table 4:
| Rate of body weight gain (%) | |
| Embodiment 1 | 0.304 |
| Embodiment 2 | 0.309 |
| Embodiment 3 | 0.313 |
| Embodiment 4 | 0.306 |
| Comparative example 1 | 1.455 |
| Comparative example 2 | 0.307 |
| Comparative example 3 | 0.310 |
| Reference examples | 3.032 |
Table 4
Table 4 shows, is respectively less than and compares by the rate of body weight gain of the weld of embodiment 1-4 treated two petroleum pipelines
Example, shows that anti-oxidant aging performance is fine, wherein the anti-oxidant aging performance of embodiment 2 is best.The part of comparative example 1-4
Step is different from embodiment 2, and the rate of body weight gain of comparative example 1 rises the auxiliary material much illustrated in alloy powder and can effectively mention
The anti-oxidant aging performance of high two petroleum pipeline welds；The rate of body weight gain and embodiment 1-4 of comparative example 2,3 maintain an equal level, and say
POSS and first of welding sequence in bright anticorrosive paint do not influence anti-oxidant aging performance.
Experimental example five: high temperature resistance test
After embodiment 1-4, the comparative example 1-3 of SY/T 5324-94 measurement petroleum pipeline and reference examples processing
The apparent heat conductivity of the weld of two petroleum pipelines, apparent heat conductivity are divided into five grades from 1 to 5, and higher grade to be shown to regard
Thermal coefficient is smaller, and high temperature resistance is better.Test result is as shown in table 5:
| Apparent heat conductivity grade | |
| Embodiment 1 | 4 |
| Embodiment 2 | 4 |
| Embodiment 3 | 4 |
| Embodiment 4 | 4 |
| Comparative example 1 | 4 |
| Comparative example 2 | 3 |
| Comparative example 3 | 4 |
| Reference examples | 2 |
Table 5
Table 5 shows, the apparent heat conductivity grade by the weld of embodiment 1-4 treated two petroleum pipelines is equal
Higher than two grades of reference examples, show that high temperature resistance is fine.The part steps of comparative example 1-4 are different from embodiment 2, right
It is more suitable than the apparent heat conductivity grade and embodiment 1-4 of embodiment 1,3, illustrate auxiliary material and first of welding in alloy powder
Process does not influence high temperature resistance；The apparent heat conductivity grade of comparative example 2 is then lower than to embodiment 1-4 mono- etc.
Grade, illustrates that the POSS in anticorrosive paint plays the role of certain raising to the high temperature resistance of two petroleum pipeline welds.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
1. it is a kind of based on laser melting coating solve petroleum pipeline welding when anti-corrosion fusing failure method, it is characterised in that: including with
Lower step:
The end polishing of petroleum pipeline is angled 45 degree of groove by the petroleum pipeline for S1. taking two same models, then right
Petroleum pipeline is pre-processed；
S2. cladding layer one, cladding layer one and slope are formed with inner wall laser cladding alloy powder of the optical fiber laser to petroleum pipeline
Mouthful distance be 100mm, cladding layer one with a thickness of 0.7-1.5mm, laser power 2800-3600kW, spot diameter is
2mm, scanning speed 600-1000mm/min, overlapping rate 50%, powder sending quantity 20-50g/min lead in laser cladding process
Argon gas protection, argon flow 15L/min；
S3. cladding layer two, cladding layer are formed to the inner wall laser cladding alloy powder at petroleum pipeline groove with optical fiber laser
Two with a thickness of 0.7-1.5mm, laser power 2000-2800kW, spot diameter 5mm, scanning speed 1000-
1400mm/min, overlapping rate 50%, powder sending quantity 30-50g/min lead to argon gas protection in laser cladding process, and argon flow is
16L/min；
S4. anticorrosive paint processing is carried out to the inner wall of petroleum pipeline；
S5. the groove of two petroleum pipelines is close together to form V word mouth, uses alloy electrode identical with alloy powder component
First of welding is carried out to V word mouth, then second is carried out in the outside of alloy electrode with common welding rod and welds to form entirety；
In the step S1, pretreated process are as follows:
1. carrying out grinding to the place in petroleum pipeline to laser melting coating, surface corrosion is removed；
2. carrying out oil removal treatment to petroleum pipeline with acetone；
3. the end to petroleum pipeline carries out Darkening process；
4. carrying out drying and processing with machined surface of the air-heater to petroleum pipeline；
The alloy powder is mixed by the base-material that weight ratio is 99:1 and auxiliary material, and base-material is nickel-base alloy, weight percent
Than composition are as follows: chromium 16%, boron 5%, silicon 4%, carbon 12%, cobalt 6%, remaining is nickel；Auxiliary material the preparation method comprises the following steps:
Yttrium nitrate, cerous nitrate, ferric nitrate are incorporated in distilled water, PVA, hexa, lemon are added after being uniformly dissolved
Acid is heated to 85 DEG C after standing 2h, and magnetic agitation uniformly forms colloidal sol afterwards, and colloidal sol taking-up is put into drying box, is done at 110 DEG C
Dry formation xerogel, xerogel is put into electric furnace and is calcined, and is warming up to after 300 DEG C with the speed of 1 DEG C/min and is kept the temperature 1h, then with
The speed of 2 DEG C/min keeps the temperature 1h after being warming up to 800 DEG C, take out after cooled to room temperature, up to auxiliary material after grinding.
2. a kind of side for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating according to claim 1
Method, it is characterised in that: in the preparation method of the auxiliary material, yttrium nitrate, cerous nitrate, ferric nitrate molar ratio be 1:1:3.
3. a kind of side for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating according to claim 2
Method, it is characterised in that: in the step S2, the power of optical fiber laser is 5kW.
4. a kind of side for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating according to claim 3
Method, it is characterised in that: in the step S3, the power of optical fiber laser is 3kW.
5. a kind of side for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating according to claim 4
Method, it is characterised in that: in the step S4, anticorrosive paint by weight ratio be 15:1 epoxy coating and POSS mixing and
At；POSS's the preparation method comprises the following steps:
Ferric trichloride, concentrated hydrochloric acid, methanol, petroleum ether, methylene chloride are added in reaction flask, stirring 1h obtains mixed liquor, by second
Alkenyl trichlorosilane is added in petroleum ether, and stirring is added dropwise in mixed liquor to after being completely dissolved, and stirring 48h obtains reaction solution, will
Filtrate one is obtained by filtration in reaction solution, and filtrate one is placed in liquid separation in separatory funnel and obtains supernatant liquid, sodium carbonate, calcium chloride are added
Enter in supernatant liquid, continues stirring and obtain mixed solution for 24 hours, filtrate two is obtained by filtration in mixed solution, filtrate two is rotated and is steamed
It stops rotating evaporation, the filtrate two after rotary evaporation is recrystallized with methylene chloride, after drying when being sent to crystal precipitation to obtain the final product
POSS。
6. a kind of side for solving anti-corrosion fusing failure when petroleum pipeline welds based on laser melting coating according to claim 5
Method, it is characterised in that: in the preparation method of the POSS, ferric trichloride, vinyl trichlorosilane, calcium carbonate, calcium chloride weight
Amount is than being 4:2.5:1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476815.5A CN108359982B (en) | 2018-05-17 | 2018-05-17 | A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476815.5A CN108359982B (en) | 2018-05-17 | 2018-05-17 | A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108359982A CN108359982A (en) | 2018-08-03 |
| CN108359982B true CN108359982B (en) | 2019-01-15 |
Family
ID=63012201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810476815.5A Active CN108359982B (en) | 2018-05-17 | 2018-05-17 | A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108359982B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472074A (en) * | 1990-07-12 | 1992-03-06 | Asahi Glass Co Ltd | Building-up method for double boride cermet product |
| US6284058B1 (en) * | 1999-09-15 | 2001-09-04 | U.T. Battelle, Llc | Method of aluminizing metal alloys by weld overlay using aluminum and aluminum alloy filler metal |
| CN101722403A (en) * | 2008-10-29 | 2010-06-09 | 中国石油天然气集团公司 | Method for manufacturing high steel grade sulfur resistant drill pipe by laser cladding |
| CN103822031A (en) * | 2013-05-03 | 2014-05-28 | 胜利油田金岛工程安装有限责任公司 | Glass-lined anti-corrosion steel pipe producing and welding processes |
| CN107267910A (en) * | 2013-03-15 | 2017-10-20 | 冶联科技地产有限责任公司 | For the method for the hot-workability for improving metal alloy |
| CN107709613A (en) * | 2015-06-23 | 2018-02-16 | 日本发条株式会社 | The manufacture method of multiple tube and multiple tube |
-
2018
- 2018-05-17 CN CN201810476815.5A patent/CN108359982B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472074A (en) * | 1990-07-12 | 1992-03-06 | Asahi Glass Co Ltd | Building-up method for double boride cermet product |
| US6284058B1 (en) * | 1999-09-15 | 2001-09-04 | U.T. Battelle, Llc | Method of aluminizing metal alloys by weld overlay using aluminum and aluminum alloy filler metal |
| CN101722403A (en) * | 2008-10-29 | 2010-06-09 | 中国石油天然气集团公司 | Method for manufacturing high steel grade sulfur resistant drill pipe by laser cladding |
| CN107267910A (en) * | 2013-03-15 | 2017-10-20 | 冶联科技地产有限责任公司 | For the method for the hot-workability for improving metal alloy |
| CN103822031A (en) * | 2013-05-03 | 2014-05-28 | 胜利油田金岛工程安装有限责任公司 | Glass-lined anti-corrosion steel pipe producing and welding processes |
| CN107709613A (en) * | 2015-06-23 | 2018-02-16 | 日本发条株式会社 | The manufacture method of multiple tube and multiple tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108359982A (en) | 2018-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103639671B (en) | Manufacturing method of steel structure box girder | |
| CN102465294B (en) | Method for carrying out laser-cladding on high-hardness nickel-based alloy material in large area | |
| CN103286427B (en) | Method for welding Q500qE ultralow-carbon bainite steel for bridge | |
| CN102049599B (en) | Submerged-arc welding method for ultrahigh-strength steel plate F460Z for ocean structure | |
| CN101722403B (en) | Method for manufacturing high steel grade sulfur resistant drill pipe by laser cladding | |
| CN104816076A (en) | Tube-to-tube butt welding technological method of coiled tube | |
| CN103822031A (en) | Glass-lined anti-corrosion steel pipe producing and welding processes | |
| CN103862145B (en) | A kind of duct butt-welding method of lining coating pipeline | |
| CN107841702B (en) | A kind of powder cored filament material and the method for preparing anticorrosive erosion thermal spray metal coating | |
| CN104070270B (en) | A kind of wire submerged arc weldering welding procedure of resistance to coastal region atmospheric corrosion steel | |
| CN103194748A (en) | Method for preparing WC cemented carbide anti-wear layer on petroleum drilling tool stabilizer through laser cladding | |
| CN104069999A (en) | Production method of wear-resistant anti-corrosion inner-coating oil pipe | |
| CN103090118A (en) | Wear-resisting and corrosion-resisting alloy coating long and thin composite tube and production method thereof | |
| CN103967425A (en) | Abrasion-resistant and corrosion-resistant bimetal composite oil pipe completely coated with coating | |
| CN113913813A (en) | Method for repairing performance of nano-reinforced Inconel718 laser coating of chromium-molybdenum alloy | |
| US20140174583A1 (en) | Linepipe with cermet internal liner | |
| CN105921545A (en) | Manufacturing method of pure titanium or titanium alloy/carbon steel laminar composite welded pipe | |
| CN102851544B (en) | Corrosion-resistant nickel-base alloy overlay welding powder | |
| CN1024173C (en) | Anticorrosion weld repairing method for inner wall of welded joint region of small diameter steel pipeline | |
| CN107377340A (en) | The painting method of fusion bonded epoxy graphene powder is applied in a kind of pipeline | |
| CN104002014B (en) | A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel | |
| CN108359982B (en) | A method of anti-corrosion fusing is failed when solving petroleum pipeline welding based on laser melting coating | |
| CN103629446A (en) | Low-lying corrosion-resisting alloying corrosion-resisting heat-preservation pipeline and processing technology thereof | |
| CN103273213A (en) | High-strength high-toughness submerged arc welding wires | |
| CN104213118A (en) | Manufacturing method of lining for galvanizing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |