CN108707741A - A kind of surface compound treatment technique of austenite stainless steel welding joint - Google Patents
A kind of surface compound treatment technique of austenite stainless steel welding joint Download PDFInfo
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- CN108707741A CN108707741A CN201810572729.4A CN201810572729A CN108707741A CN 108707741 A CN108707741 A CN 108707741A CN 201810572729 A CN201810572729 A CN 201810572729A CN 108707741 A CN108707741 A CN 108707741A
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- impact
- stainless steel
- toe
- austenite stainless
- welded seam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/085—Iron or steel solutions containing HNO3
Abstract
The invention discloses a kind of surface compound treatment techniques of austenite stainless steel welding joint, include the following steps：A, the heat-affected zone of needle-like impact head butt joint and welded seam area is used to carry out ultrasonic implement treatment first using impact gun；B, ultrasonic implement treatment is carried out to welded seam area and toe of weld region using cylindrical impact needle roller followed by impact gun；C, and then using impact gun using needle-like impact head shock treatment is carried out again to heat-affected zone, welded seam area and toe of weld region under low power scenarios；D, when roughness, which is more than 128 μm or hardness, is less than 1.5 times of base material hardness, step c is repeated；E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density strong acid.By the above-mentioned means, the surface compound treatment technique of austenite stainless steel welding joint of the present invention, improves austenite stainless steel welding joint anti-stress corrosion performance, especially anti-fluorine ion stress corrosion performance.
Description
Technical field
The present invention relates to welding post-processing technology fields, more particularly to a kind of surface of austenite stainless steel welding joint
Composite treatment process.
Background technology
As a kind of processing method of special surface, ultrasonic implement treatment（Ultrasonic Impact Treatment）
The surface quality of welding point can be effectively improved, welding vestige stress is eliminated, smooth toe of weld refines surface layer grain ruler
Very little, welding point after treatment forms certain tensile stress layer and hardened layer, to improve welding point, especially austenite
The anti-stress corrosion performance of stainless steel welded joint.
Traditional ultrasonic impact treatment process, although austenite stainless steel welding joint can be improved to a certain extent
Anti-stress corrosion performance, but since its treatment process parameter is single, flow is simple, has that processing rear surface roughness is big, weldering
The problem of toe transition is not round and smooth and surface stress is unevenly distributed, stress concentration is big, after processing welding point surface quality
It also needs to further be promoted.
For this purpose, being based on ultrasonic implement treatment technology, the surface recombination for proposing new austenite stainless steel welding joint is needed
Treatment process overcomes the above problem.
Invention content
The invention mainly solves the technical problem of providing a kind of surface compound treatments of austenite stainless steel welding joint
Technique promotes the surface quality and hardness of welding point, improves anti-stress corrosion performance.
In order to solve the above technical problems, one aspect of the present invention is：A kind of austenitic stainless steel weldering is provided
The surface compound treatment technique of connector, includes the following steps：
A, the welding point of austenite stainless steel part is after surface cleaning, uses needle-like impact head the first using impact gun
The heat-affected zone of butt joint and welded seam area carry out ultrasonic implement treatment under one high power operating mode；
B, needle roller is impacted under the second high power operating mode to welded seam area and toe of weld region using cylindrical followed by impact gun
Carry out ultrasonic implement treatment；
C, and then using impact gun use needle-like impact head under low power scenarios to heat-affected zone, welded seam area and toe zone
Domain carries out shock treatment again；
D, after the completion of processing, welded seam area, toe of weld region and heat-affected zone roughness and case hardness are measured, when roughness is big
When 128 μm or hardness are less than 1.5 times of base material hardness, step c is repeated, until roughness and hardness reach corresponding index；
E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density strong acid, retained certain
After time, surface strong acid is cleaned, and then complete whole processing technology.
In a preferred embodiment of the present invention, the first high power operating mode refers to percussion power between 0.8 ~ 1kW.
In a preferred embodiment of the present invention, the second high power operating mode refers to power bracket between 1 ~ 1.2 kW.
In a preferred embodiment of the present invention, in the step c, low-power refer to power bracket 0.5-0.7 kW it
Between.
In a preferred embodiment of the present invention, in the step a, impact gun is in the first angle, the first folder with process face
The angle at angle is 60 ~ 90 °, and the movement speed of the needle-like impact head is between 3-5cm/s.
In a preferred embodiment of the present invention, in the step b, when processing welding lines region, cylinder impact needle roller
Axis is vertical with welded seam area, and impact gun is in 90 ° with process face, and the movement speed of cylinder impact needle roller is 5-6m/s.
In a preferred embodiment of the present invention, in the step b, when handling toe of weld region, cylinder impact needle roller
Axis is parallel with toe of weld, and impact gun is in the second angle with process face, and the angle of the second angle is 45 °, cylinder impact needle roller
Movement speed is 4-5m/s.
In a preferred embodiment of the present invention, in the step c, impact gun and heat-affected zone, welded seam area and weldering
The process face in toe region is in third angle, and the angular range of third angle is between 60-90 °, the movement speed of needle-like impact head
For 2-3cm/s.
In a preferred embodiment of the present invention, in the step e, the strong acid be 5% concentration salpeter solution or
25% hydrochloric acid solution.
The beneficial effects of the invention are as follows：A kind of surface compound treatment for austenite stainless steel welding joint that the present invention points out
Technique, after carrying out ultrasonic implement treatment using different technological parameters by the different zones in welding point, welding point
Welding vestige stress has obtained effectively discharging, while producing certain thickness tensile stress layer, by changing impact head
Form, toe of weld transition obtain round and smooth transition, and on this basis, by the repeated impacts of low-power, surface roughness is significantly
It reduces, stress concentration is alleviated significantly, eventually by acid wash passivation, the surface layer that chemical property is stablized is generated, to greatly improve Austria
Family name's body anti-stress corrosion performance of welding joint of stainless steel, especially anti-fluorine ion stress corrosion performance.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein：
Fig. 1 is that a kind of process object one of the surface compound treatment technique of austenite stainless steel welding joint of the present invention is preferably implemented
The structural schematic diagram of example；
Fig. 2 is a preferably implementation of step a in a kind of surface compound treatment technique of austenite stainless steel welding joint of the present invention
The structural schematic diagram of example；
Fig. 3 is a preferably implementation of step b in a kind of surface compound treatment technique of austenite stainless steel welding joint of the present invention
The structural schematic diagram of example.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
Based on the principle of " subregion is divided and ruled ", according to the surface layer characteristic of different welding point different zones, it is proposed that Yi Zhongxin
Austenite stainless steel welding joint surface compound treatment technique.
~ Fig. 3 is please referred to Fig.1, the embodiment of the present invention includes：
Embodiment 1：
A kind of surface compound treatment technique of austenite stainless steel welding joint, includes the following steps：
A, the welding point of austenite stainless steel part is after surface cleaning, uses needle-like impact head the first using impact gun
The heat-affected zone of butt joint and welded seam area carry out ultrasonic implement treatment, the first high power operating mode under one high power operating mode
Percussion power be 0.8kW, impact gun and process face are in the first angle, and the angle of the first angle is 60 °, the needle-like impact head
Movement speed between 3cm/s；
B, needle roller is impacted under the second high power operating mode to welded seam area and toe of weld region using cylindrical followed by impact gun
Ultrasonic implement treatment is carried out, it is 1 kW that the second high power operating mode, which refers to power, when processing welding lines region, cylinder impact needle roller
Axis it is vertical with welded seam area, impact gun and process face are in 90 °, and the movement speed of cylinder impact needle roller is 5m/s, processing
When toe of weld region, the axis of cylinder impact needle roller is parallel with toe of weld, and impact gun is in the second angle with process face, the second angle
Angle is 45 °, and the movement speed of cylinder impact needle roller is 4m/s；
C, and then using impact gun use needle-like impact head under the low power condition of 0.5kW to heat-affected zone, welded seam area
And toe of weld region carries out shock treatment again, the process face in impact gun and heat-affected zone, welded seam area and toe of weld region is in the
The angle of three angles, third angle is 60 °, and the movement speed of needle-like impact head is 2cm/s；
D, after the completion of processing, welded seam area, toe of weld region and heat-affected zone roughness and case hardness are measured, when roughness is big
When 128 μm or hardness are less than 1.5 times of base material hardness, step c is repeated, until roughness and hardness reach corresponding index；
E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density strong acid, retained certain
After time, surface strong acid is cleaned, and then complete whole processing technology, the strong acid is the salpeter solution of 5% concentration.
Embodiment 2：
A kind of surface compound treatment technique of austenite stainless steel welding joint, includes the following steps：
A, the welding point of austenite stainless steel part is after surface cleaning, uses needle-like impact head the first using impact gun
The heat-affected zone of butt joint and welded seam area carry out ultrasonic implement treatment, the first high power operating mode under one high power operating mode
Percussion power be 1kW, impact gun and process face are in the first angle, and the angle of the first angle is 90 °, the needle-like impact head
Movement speed is 5cm/s；
B, needle roller is impacted under the second high power operating mode to welded seam area and toe of weld region using cylindrical followed by impact gun
Carrying out ultrasonic implement treatment, the power of the second high power operating mode is 1.2 kW, when processing welding lines region, cylinder impact rolling
The axis of needle is vertical with welded seam area, and impact gun is in 90 ° with process face, and the movement speed of cylinder impact needle roller is 6m/s, place
When managing toe of weld region, the axis of cylinder impact needle roller is parallel with toe of weld, and impact gun is in the second angle, the second angle with process face
Angle be 45 °, cylinder impact needle roller movement speed be 5m/s；
C, then using impact gun using needle-like impact head under 0.7kW low power conditions to heat-affected zone, welded seam area and
Toe of weld region carries out shock treatment again, and the process face in impact gun and heat-affected zone, welded seam area and toe of weld region is in third
The angle of angle, third angle is 90 °, and the movement speed of needle-like impact head is 3cm/s；
D, after the completion of processing, welded seam area, toe of weld region and heat-affected zone roughness and case hardness is measured, roughness is measured
It it is 64 μm, hardness is 1.7 times of base material hardness, reaches roughness and hardness number；
E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density strong acid, retained certain
After time, surface strong acid is cleaned, and then complete whole processing technology, the hydrochloric acid solution that the strong acid is 25%.
Embodiment 3：
A kind of surface compound treatment technique of austenite stainless steel welding joint, includes the following steps：
A, the welding point of austenite stainless steel part is after surface cleaning, uses needle-like impact head the first using impact gun
The heat-affected zone of butt joint and welded seam area carry out ultrasonic implement treatment, the first high power operating mode under one high power operating mode
Percussion power be 0.9kW, impact gun and process face are in the first angle, and the angle of the first angle is 90 °, the needle-like impact head
Movement speed be 5cm/s；
B, needle roller is impacted under the second high power operating mode to welded seam area and toe of weld region using cylindrical followed by impact gun
Carrying out ultrasonic implement treatment, the power of the second high power operating mode is 1.1kW, when processing welding lines region, cylinder impact rolling
The axis of needle is vertical with welded seam area, and impact gun is in 90 ° with process face, and the movement speed of cylinder impact needle roller is 5.5m/s,
When handling toe of weld region, the axis of cylinder impact needle roller is parallel with toe of weld, and impact gun is in the second angle, the second folder with process face
The angle at angle is 45 °, and the movement speed of cylinder impact needle roller is 4.5m/s；
C, then using impact gun using needle-like impact head under 0.6 kW low power conditions to heat-affected zone, welded seam area and
Toe of weld region carries out shock treatment again, and the process face in impact gun and heat-affected zone, welded seam area and toe of weld region is in third
The angle of angle, third angle is 75 °, and the movement speed of needle-like impact head is 2.5cm/s；
D, after the completion of processing, welded seam area, toe of weld region and heat-affected zone roughness and case hardness are measured, when roughness is big
When 128 μm or hardness are less than 1.5 times of base material hardness, step c is repeated, until roughness and hardness reach corresponding index；
E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density 25% hydrochloric acid solution, protected
After staying the regular hour, surface strong acid is cleaned.
In conclusion a kind of surface compound treatment technique for austenite stainless steel welding joint that the present invention points out,
The welding point of austenitic stainless steel is smooth after processing, and roughness is low, and toe of weld transition is smooth, surface layer chemical stabilization after processing
Property good, anti-stress corrosion performance, especially anti-fluorine ion stress corrosion performance is greatly improved, especially suitable for preventing
In chemical industry equipment the problem of austenite stainless steel welding joint fluorine ion stress corrosion cracking.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (9)
1. a kind of surface compound treatment technique of austenite stainless steel welding joint, which is characterized in that include the following steps：
A, the welding point of austenite stainless steel part is after surface cleaning, uses needle-like impact head the first using impact gun
The heat-affected zone of butt joint and welded seam area carry out ultrasonic implement treatment under one high power operating mode；
B, needle roller is impacted under the second high power operating mode to welded seam area and toe of weld region using cylindrical followed by impact gun
Carry out ultrasonic implement treatment；
C, and then using impact gun use needle-like impact head under low power scenarios to heat-affected zone, welded seam area and toe zone
Domain carries out shock treatment again；
D, after the completion of processing, welded seam area, toe of weld region and heat-affected zone roughness and case hardness are measured, when roughness is big
When 128 μm or hardness are less than 1.5 times of base material hardness, step c is repeated, until roughness and hardness reach corresponding index；
E, treated welded seam area, toe of weld region and heat-affected zone is smeared using certain density strong acid, retained certain
After time, surface strong acid is cleaned, and then complete whole processing technology.
2. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states the first high power operating mode and refers to percussion power between 0.8 ~ 1kW.
3. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states the second high power operating mode and refers to power bracket between 1 ~ 1.2 kW.
4. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states in step c, low-power refers to power bracket between 0.5-0.7 kW.
5. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states in step a, impact gun is in the first angle with process face, and the angle of the first angle is 60 ~ 90 °, the shifting of the needle-like impact head
Dynamic speed is between 3-5cm/s.
6. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states in step b, when processing welding lines region, the axis of cylinder impact needle roller is vertical with welded seam area, and impact gun is in process face
90 °, the movement speed of cylinder impact needle roller is 5-6m/s.
7. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states in step b, when handling toe of weld region, the axis of cylinder impact needle roller is parallel with toe of weld, and impact gun is in second with process face
The angle of angle, the second angle is 45 °, and the movement speed of cylinder impact needle roller is 4-5m/s.
8. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
It states in step c, the process face in impact gun and heat-affected zone, welded seam area and toe of weld region is in third angle, third angle
For angular range between 60-90 °, the movement speed of needle-like impact head is 2-3cm/s.
9. the surface compound treatment technique of austenite stainless steel welding joint according to claim 1, which is characterized in that institute
State in step e, the strong acid be 5% concentration salpeter solution or 25% hydrochloric acid solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810572729.4A CN108707741B (en) | 2018-06-06 | 2018-06-06 | A kind of surface compound treatment technique of austenite stainless steel welding joint |
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| CN201810572729.4A CN108707741B (en) | 2018-06-06 | 2018-06-06 | A kind of surface compound treatment technique of austenite stainless steel welding joint |
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| CN108707741A true CN108707741A (en) | 2018-10-26 |
| CN108707741B CN108707741B (en) | 2019-08-09 |
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ID=63870354
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112251596A (en) * | 2020-09-09 | 2021-01-22 | 中冶建筑研究总院有限公司 | Method for improving fatigue performance of steel plate and butt-welded joint |
| CN113084316A (en) * | 2021-04-30 | 2021-07-09 | 徐州徐工矿业机械有限公司 | Dissimilar steel ZG120Mn17Cr2 and Q355 welding process method, detection method and movable cone assembly |
| US20230287536A1 (en) * | 2022-03-09 | 2023-09-14 | Yamada Infra Technos Co., Ltd. | Preventive maintenance construction method for steel bridge |
| US11959148B2 (en) * | 2022-03-09 | 2024-04-16 | Yamada Infra Technos Co., Ltd. | Preventive maintenance construction method for steel bridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112251596A (en) * | 2020-09-09 | 2021-01-22 | 中冶建筑研究总院有限公司 | Method for improving fatigue performance of steel plate and butt-welded joint |
| CN113084316A (en) * | 2021-04-30 | 2021-07-09 | 徐州徐工矿业机械有限公司 | Dissimilar steel ZG120Mn17Cr2 and Q355 welding process method, detection method and movable cone assembly |
| US20230287536A1 (en) * | 2022-03-09 | 2023-09-14 | Yamada Infra Technos Co., Ltd. | Preventive maintenance construction method for steel bridge |
| US11959148B2 (en) * | 2022-03-09 | 2024-04-16 | Yamada Infra Technos Co., Ltd. | Preventive maintenance construction method for steel bridge |
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| Publication number | Publication date |
|---|---|
| CN108707741B (en) | 2019-08-09 |
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