CN107641773A - A kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe - Google Patents
A kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe Download PDFInfo
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- CN107641773A CN107641773A CN201710762093.5A CN201710762093A CN107641773A CN 107641773 A CN107641773 A CN 107641773A CN 201710762093 A CN201710762093 A CN 201710762093A CN 107641773 A CN107641773 A CN 107641773A
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Abstract
The present invention provides a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe, corrosion-resistant stainless steel seamless steel pipe chemical composition and mass percent：N：0.25 0.27%, C：0.018 0.035%, P：0.035 0.055%, S：0.003 0.005%, Si：0.4 0.6%, Ni：7.0 7.6%, Cr：26.5 27.2%, Mo：3.5 3.7%, Mn：1.00~1.40%, Cu：0.10 0.12%, surplus Fe；Preparation technology of the present invention can obtain a kind of corrosion-resistant stainless steel seamless steel pipe of good, the comprehensive fine corrosion resistance of acid resistance, corrosion-resistant stainless steel seamless steel pipe performance test or the reponse system of detection are also introduced into, such as increases air-tight test process, destructive testing process and water pressure test process to ensure that corrosion-resistant stainless steel seamless steel pipe is functional.
Description
Technical field
The present invention relates to stainless-steel seamless pipe to prepare manufacturing technology field, corrosion-resistant not more specifically to one kind
The preparation technology of rust steel seamless steel tube.
Background technology
Corrosion is one of problem for perplexing industrial gas oil development, according to "ball-park" estimate, is corroded to China's oil
Loss accounts for the 6% of the industry gross output value caused by industry, and takes suitable anti-corrosion measure at least to retrieve 30%-40%'s
Loss.The common mounting means of petroleum pipeline of China's transport at present is to be embedded in underground, and also some petroleum pipeline is to place
In open-air atmosphere, this just further increases the requirement to the corrosion resistance of petroleum pipeline, should meet the anti-of inner-walls of duct
Corrosion requires, meets the requirement of atmospheric corrosion resistance again.
And the especially preparation technology of corrosion-resistant stainless steel seamless steel pipe in existing stainless-steel seamless pipe preparation process
In lack feedback mechanism for corrosion-resistant stainless steel seamless steel pipe performance test or detection mostly.Wherein：
Air-leakage test for stainless-steel seamless pipe be applied to high-pressure bottle product detection it is particularly important, stainless steel without
Tube product air-tightness is bad can cause leakage for seam, will directly affect the reliability of stainless-steel seamless pipe product, economy and
Overall performance, the problem of causing to occur in actual use malfunctioning machine, operation exception, the less efficient, lost of life, therefore,
Air-leakage test embodies more and more important effect in modern industry, is to ensure stainless-steel seamless pipe product quality, peace
The important means of full performance.
China's Many researchers have also put into substantial amounts of material resources and manpower carries out the R and D of air-tightness detection device,
It is stable but existing air-tight test platform is tested primarily directed to each product, and testing stand is single, inconvenient for operation
Property it is poor, typically all using manually operated, the air-tightness dwell time is difficult to ensure that operator, always asks in use
Topic, as the air-leakage test of workpiece needs operating personnel to manually complete, during air-leakage test, when compressed gas is moved rapidly
Move to closed by after sample cavity, system gas pressure declines and system pipeline junction has gas tiny leakage, can all make
It is existing to need operating personnel to pass through pressure gauge observation system into detecting system pressure value deficiency, it is necessary to the timely ftercompction of system
Pressure value, easily it is affected by human factors, accuracy of detection is not high.Patent such as application number 201320279698.6 discloses a kind of inspection
Device is surveyed, the cylinder that detection means includes detection workbench and is arranged on above detection workbench, it also includes and detection means
Connected computing automatic display unit and the cylinder piston plate being used cooperatively and the air pressure acted on auto parts to be detected
Control device, the pressure bar for pressing each shrinkage pool position on auto parts to be detected, Pneumatic controller bag are provided with piston plate
Air pressure tank and tracheae are included, but its structure is single, precision is not high, carries inconvenience, is unfavorable for detecting the development of work；And for example apply
Number CN201320888905.8 patent discloses a kind of stainless steel valve class Multifunctional, air tightness test platform, including testing stand master
Body, testing stand body top are fixed with several fixtures, and pressure gauge and switch are fixed with the testing stand main body above fixture, press from both sides
Tool, pressure gauge, switch are connected with control room respectively；Fixture includes reservoir and chuck, and chuck is fixed on the front end of reservoir, and chuck
Sealing gasket is fixedly arranged at the front end with, although the structure can be controlled individually, is applicable to the essence of different products, stability and experiment
Degree is not easy to ensure.The air-tight test platform of the present invention uses PLC control assemblies and pressure sensor as core component, utilizes
PLC control assemblies control gas circuit structure, realize the automatic detection of the stainless-steel seamless pipe product of different accuracy requirement, from certain
Detection efficiency, precision are improved in degree.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of the resistance to of good, the comprehensive fine corrosion resistance of acid resistance
Corrode the preparation technology of stainless-steel seamless pipe, while be also introduced into corrosion-resistant stainless steel seamless steel pipe performance test or detection
Reponse system, such as increase air-tight test process, destructive testing process and water pressure test process etc..
In order to achieve the above object, the present invention provides following technical scheme：
A kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe, the chemical composition of the corrosion-resistant stainless steel seamless steel pipe
And mass percent is：N：0.25-0.27%, C：0.018-0.035%, P：0.035-0.055%, S：0.003-0.005%,
Si：0.4-0.6%, Ni：7.0-7.6%, Cr：26.5-27.2%, Mo：3.5-3.7%, Mn：1.00~1.40%, Cu：
0.10-0.12%, surplus Fe；
The corrosion-resistant stainless steel seamless steel pipe is prepared by following operational sequence：Round steel inspection-hot piercing-acid
Wash-examine reconditioning-the first cold rolling-- the first solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-weldering
Head-lubrication-- go for cold-drawn by the-the second solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-the second cold rolling-
The experiment of oil-brightness heat treatment-aligning-production tube with examine-whether qualified feed back-scale-cleaning-mark-packaging；
Wherein：The production tube experiment includes following process successively with examining：Air-tight test-destructive testing-table
Face and dimension control-ultrasonic inspection-eddy-current test-water pressure test；
The hot piercing process, Φ 75mm round steel is worn into by external diameter 75mm by hot piercing equipment, in wall thickness 6.0mm
Between manage；
First cold rolling process, cross cold-rolling equipment and intervalve is cold-rolled to external diameter 55mm, wall thickness 3.5mm intervalve；
The first solution treatment process, treatment temperature are 700-800 DEG C, soaking time 4-5.5 minutes；
The cold-drawn process, cross cold-drawn equipment and intervalve is cold drawing to external diameter 40mm, wall thickness 2.5mm intervalve；
The second solution treatment process, using protective atmosphere light solution heat treatment, the protective atmosphere uses purity
Pure hydrogen more than 99.99%, the heat treatment temperature of the protective atmosphere light solution heat treatment is 980-1100 DEG C, soaking time
6-8 minutes；
Second cold rolling, cross cold-rolling equipment and intervalve is cold-rolled to 32.54~32.56mm of external diameter, wall thickness 1.98-
2.00mm production tube；
The air-tight test process is that use can be put down for the air-tight test of the corrosion-resistant stainless steel seamless steel pipe
Platform is tested；
The destructive testing process is that use can be directed to the corrosion-resistant high pressure resistant of the corrosion-resistant stainless steel seamless steel pipe
Destroy test device (Patent No. 201610654389.0, the high pressure resistant destruction test device of entitled steel pipe)；
The water pressure test process is the hydrostatic testing machine (patent that use can be directed to the corrosion-resistant stainless steel seamless steel pipe
Number be 201620356531.9, it is entitled one kind without shuttle valve type minor diameter seamless steel tube hydrostatic testing machine)
32.54~32.56mm of external diameter of corrosion-resistant stainless steel seamless steel pipe, wall thickness are obtained by above-mentioned preparation technology
1.98-2.00mm, external diameter and wall thickness dimension deviation are in ± 0.01mm；Inner wall roughness Ra is less than or equal to 0.4 μm, and outer wall is coarse
Spend Ra and be less than or equal to 0.3 μm.
As preferable, the air-tight test platform employed in air-tight test process includes housing, described shell
Body includes the first housing and the second housing, is provided with the first shell body and is used to detect corrosion-resistant stainless steel seamless steel pipe sample gas
The tank of close property, the second shell body is interior to be provided with control assembly, and operating desk and display are provided with above second housing, described
Operating desk be provided with corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing and corrosion-resistant stainless steel seamless steel pipe sample test
Device；
Described corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing includes the first guide rail, clamp base, fixture and led
Flattening mechanism, first guide rail are arranged on the centre of the operating desk, are provided with the first sliding block below the clamp base, and described the
One sliding block can slide on first guide rail；The fixture is arranged in clamp base, and the fixture upper surface is provided with more
Individual corrosion-resistant stainless steel seamless steel pipe sample cell；The flattening mechanism of leading includes leading flat cylinder and flat guiding plate, and the flat guiding plate is parallel
It is arranged on the side of the fixture, described to lead flat cylinder one end and be connected with the flat guiding plate, the other end is fixed on institute by support
State on operating desk；
Described corrosion-resistant stainless steel seamless steel pipe Sample testing device includes main installation riser, mounting bracket and detection machine
Structure, the main installation riser are arranged on the operating desk close to one end of first housing, and the mounting bracket is positioned at described
Above tank and it is arranged in the main installation riser, the testing agency is arranged on the mounting bracket；The main installation is vertical
Plate lower end offers the square groove passed through for the fixture, is additionally provided with the main installation riser positioned at the square groove both sides
The axis of guide, the axis of guide are provided with the second sliding block；The mounting bracket is arranged on second sliding block by fixed transverse slat, institute
Stating mounting bracket includes the first fixed mount, the second fixed mount and the second guide rail, and the lower end of first fixed mount is uniformly provided with multiple
Slotted eye, the lower end of second fixed mount are uniformly provided with multiple through holes, and described second guide rail one end connects with first fixed mount
Connect, the second guide rail other end is connected by the 3rd sliding block with second fixed mount；The testing agency includes more set gas
Nozzle assembly and with more set seal assemblies that the valve component matches, cover the valve component more and be arranged at the slotted eye
It is interior, cover the seal assembly more and be arranged in the through hole.
Roller is provided with as preferable, described housing lower section.
As preferable, the described one end of first guide rail away from the fixture is provided with motor.
As preferable, lift cylinder of the fixed transverse slat provided with driving the second sliding block movement.
As preferable, guide cylinder of second fixed mount provided with driving the 3rd sliding block movement.
As preferable, the valve component and the seal assembly are provided with 6~12 sets.
As preferable, the valve component includes air inlet pipe, air tap sleeve and the syringe needle in the air tap sleeve, described
Air tap sleeve is externally provided with the fixing nut being connected with first fixed mount.
As preferable, the seal assembly includes the seal head and sealing nut that the through hole is stretched into one end.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of the resistance to of good, the comprehensive fine corrosion resistance of acid resistance can be prepared by the preparation technology of the present invention
Corrode stainless-steel seamless pipe, while be also introduced into corrosion-resistant stainless steel seamless steel pipe performance test or the reponse system of detection,
For example increase air-tight test process, destructive testing process and water pressure test process etc. to ensure that corrosion-resistant stainless steel is seamless
Steel tube performance is good.Specifically：According to the technical scheme of above-mentioned air-tight test process, it is recognised that air-tight test platform,
Including corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing and corrosion-resistant stainless steel seamless steel pipe Sample testing device, control group
Part and display, corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing include the first guide rail, clamp base, fixture and lead flat machine
Structure, fixture are arranged in clamp base, and fixture upper surface is provided with multiple corrosion-resistant stainless steel seamless steel pipe sample cells, will be to be tested
Corrosion-resistant stainless steel seamless steel pipe sample can stick into corrosion-resistant stainless steel seamless steel pipe sample cell, convenient detection, lead flat
Mechanism includes leading flat cylinder and flat guiding plate, and flat guiding plate is set in parallel in the side of fixture, can be in corrosion-resistant stainless steel to be tested
Seamless steel pipe sample is adjusted after being put into corrosion-resistant stainless steel seamless steel pipe sample cell to the sample, is made all to be tested resistance to
Length is consistent before and after corroding stainless-steel seamless pipe sample, is easy to follow-up test；Corrosion-resistant stainless steel seamless steel pipe sample is surveyed
Trial assembly is put including main installation riser, mounting bracket and testing agency, and mounting bracket includes the first fixed mount, the second fixed mount and second is led
Rail, mounting bracket are arranged on the second sliding block by fixed transverse slat, and whole testing agency can be driven to move up and down, the first fixed mount and
The second guide rail is provided between second fixed mount, the second fixed mount can slide back and forth on the second guide rail, and by the second fixed mount
Seal assembly docked with the valve component on the first fixed mount；Whole operation process very flexibly, conveniently, is not required to artificial
To install corrosion-resistant stainless steel seamless steel pipe sample to be tested, manpower on the one hand can be saved, on the other hand also improves inspection
The accuracy and security of survey；
Control assembly can be according to the operation of the process parameter control detection process of setting, while can be real by pressure sensor
When the system pressure data that gathers be transferred to display, facilitate operating personnel to be acquired and analyze, once detect pressure not
The situation of foot, can timely ftercompction；In whole detection process, automaticity is high, and operating personnel may exit off Hi-pot test and show
, pressure curve change is monitored in real time by control assembly and program, can automatic identification test corrosion-resistant stainless steel without
The qualification of steel pipe sample is stitched, drastically increases production efficiency and the security of operating personnel.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is air-tight test platform structure schematic diagram in air-tight test process in the present invention；
Fig. 2 is air-tight test platform top view in air-tight test process in the present invention；
Fig. 3 is the corrosion-resistant stainless steel seamless steel pipe sample of air-tight test platform in air-tight test process in the present invention
Test device structural representation；
Fig. 4 is the first fixed rack structure schematic diagram of air-tight test platform in air-tight test process in the present invention；
Fig. 5 is the valve component assembling structure schematic diagram of air-tight test platform in air-tight test process in the present invention；
Fig. 6 is the needle head structure schematic diagram of air-tight test platform in air-tight test process in the present invention；
Fig. 7 is the seal assembly assembling structure schematic diagram of air-tight test platform in air-tight test process in the present invention；
Wherein, marked in accompanying drawing as follows：
1- housings, the housings of 101- first, the housings of 102- second, 2- rollers, 3- tanks, 4- control assemblies, 5- operating desks, 6-
Display, the blanking grooves of 601- first, the blanking grooves of 602- second, 603- discharge trays, 604- folding pawls, 7- corrosion-resistant stainless steels are seamless
Steel pipe sample apparatus for placing, 8- corrosion-resistant stainless steel seamless steel pipe Sample testing devices, the guide rails of 9- first, 10- clamp bases,
11- fixtures, 12- lead flattening mechanism, and 1201- leads flat cylinder, 1202- flat guiding plates, 1203- supports, and the main installations of 13- are vertical
Plate, 1301- square grooves, the 1302- axis of guides, the sliding blocks of 1303- second, 14- mounting brackets,
1401- fixes transverse slat, the fixed mounts of 1402- first, the fixed mounts of 1403- second, the guide rails of 1404- second, 1405- the 3rd
Sliding block, 15- testing agencies,
16- valve components, 1601- air inlet pipe, 1602- air tap sleeves, 1603- syringe needles, 1604- fixing nuts, 17- sealing groups
Part, 1701- seal heads, 1702- sealing nuts, 18- slotted eyes, 19- through holes, 20- motors, 21- lift cylinders, 22- are oriented to
Cylinder.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The present invention provides a kind of specific embodiment of the preparation technology of corrosion-resistant stainless steel seamless steel pipe, it is described it is corrosion-resistant not
The chemical composition of steel seamless steel tube of becoming rusty and mass percent are：N：0.25-0.27%, C：0.018-0.035%, P：0.035-
0.055%, S：0.003-0.005%, Si：0.4-0.6%, Ni：7.0-7.6%, Cr：26.5-27.2%, Mo：3.5-
3.7%, Mn：1.00~1.40%, Cu：0.10-0.12%, surplus Fe；
The corrosion-resistant stainless steel seamless steel pipe is prepared by following operational sequence：Round steel inspection-hot piercing-acid
Wash-examine reconditioning-the first cold rolling-- the first solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-weldering
Head-lubrication-- go for cold-drawn by the-the second solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-the second cold rolling-
The experiment of oil-brightness heat treatment-aligning-production tube with examine-whether qualified feed back-scale-cleaning-mark-packaging；
Wherein：The production tube experiment includes following process successively with examining：Air-tight test-destructive testing-table
Face and dimension control-ultrasonic inspection-eddy-current test-water pressure test；
The hot piercing process, Φ 75mm round steel is worn into by external diameter 75mm by hot piercing equipment, in wall thickness 6.0mm
Between manage；
First cold rolling process, cross cold-rolling equipment and intervalve is cold-rolled to external diameter 55mm, wall thickness 3.5mm intervalve；
The first solution treatment process, treatment temperature are 700-800 DEG C, soaking time 4-5.5 minutes；
The cold-drawn process, cross cold-drawn equipment and intervalve is cold drawing to external diameter 40mm, wall thickness 2.5mm intervalve；
The second solution treatment process, using protective atmosphere light solution heat treatment, the protective atmosphere uses purity
Pure hydrogen more than 99.99%, the heat treatment temperature of the protective atmosphere light solution heat treatment is 980-1100 DEG C, soaking time
6-8 minutes；
Second cold rolling, cross cold-rolling equipment and intervalve is cold-rolled to 32.54~32.56mm of external diameter, wall thickness 1.98-
2.00mm production tube；
The air-tight test process is that use can be put down for the air-tight test of the corrosion-resistant stainless steel seamless steel pipe
Platform is tested；
The destructive testing process is that use can be directed to the corrosion-resistant high pressure resistant of the corrosion-resistant stainless steel seamless steel pipe
Destroy test device (Patent No. 201610654389.0, the high pressure resistant destruction test device of entitled steel pipe)；
The water pressure test process is the hydrostatic testing machine (patent that use can be directed to the corrosion-resistant stainless steel seamless steel pipe
Number be 201620356531.9, it is entitled one kind without shuttle valve type minor diameter seamless steel tube hydrostatic testing machine)
32.54~32.56mm of external diameter of corrosion-resistant stainless steel seamless steel pipe, wall thickness are obtained by above-mentioned preparation technology
1.98-2.00mm, external diameter and wall thickness dimension deviation are in ± 0.01mm；Inner wall roughness Ra is less than or equal to 0.4 μm, and outer wall is coarse
Spend Ra and be less than or equal to 0.3 μm.
Specifically, use can be directed to the corrosion-resistant stainless steel seamless steel in the air-tight test process in the present invention
The air-tight test platform specific embodiment of pipe, as depicted in figs. 1 and 2, a kind of air-tight test platform, including housing 1, housing
1 lower section is provided with roller 2, can facilitate the movement of testing stand, housing 1 includes the first housing 101 and the second housing 102, first shell
Tank 3 is provided with body 101, full water is stored up in tank 3, corrosion-resistant stainless steel seamless steel pipe sample to be detected is put into tank 3, i.e.,
The air-tightness of corrosion-resistant stainless steel seamless steel pipe sample can be detected by bubble；Control assembly 4 is provided with second housing 102, the
The top of two housing 102 is provided with operating desk 5 and display 6, and operating desk 5 is provided with corrosion-resistant stainless steel seamless steel pipe sample and places dress
7 and corrosion-resistant stainless steel seamless steel pipe Sample testing device 8 are put, control assembly 4 can detect according to the process parameter control of setting
The operation of process, while the system pressure data that can gather pressure sensor in real time is transferred to display 6, facilitates operator
Member is acquired and analyzed；
As depicted in figs. 1 and 2, corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing 7 includes the first guide rail 9, fixture bottom
Seat 10, fixture 11 and lead flattening mechanism 12, the first guide rail 9 is arranged on the centre of operating desk 5, the first guide rail 9 away from fixture 11 one
End is provided with motor 20, and the lower section of clamp base 10 is provided with the first sliding block 1001, and the first sliding block 1001 can be slided on the first guide rail 9
It is dynamic；Fixture 11 is arranged in clamp base 10, and the upper surface of fixture 11 is provided with multiple corrosion-resistant stainless steel seamless steel pipe sample cells
1101, the workpiece (corrosion-resistant stainless steel seamless steel pipe sample i.e. to be tested, similarly hereinafter) of test can stick into corrosion-resistant stainless steel
In seamless steel pipe sample cell 1101, convenient detection；Motor 20 drives clamp base 10 to move back and forth on the first guide rail 9,
And the workpiece on fixture 11 is delivered into the lower section of corrosion-resistant stainless steel seamless steel pipe Sample testing device 8, detected；Lead flattening mechanism
12 include leading flat cylinder 1201 and flat guiding plate 1202, and flat guiding plate 1202 is set in parallel in the side of fixture 11, leads flat cylinder 1201
One end is connected with flat guiding plate 1202, and the other end is fixed on operating desk 5 by support 1203, is led flat cylinder 1201 and is promoted flat guiding plate
1202 move along the vertical direction of workpiece, can be after workpiece is put into corrosion-resistant stainless steel seamless steel pipe sample cell 1101 to workpiece
It is adjusted, because the workpiece of one-time detection has more than one piece, leads the setting of flattening mechanism 12, not being adjusted one by one manually makes
Length is consistent before and after all workpiece, not only facilitates follow-up test, and improve accuracy of detection；
As shown in Figures 1 to 3, corrosion-resistant stainless steel seamless steel pipe Sample testing device 8 includes main installation riser 13, mounting bracket
14 and testing agency 15, main installation riser 13 is arranged on operating desk 5 to be located at close to one end of the first housing 101, mounting bracket 14
Above tank 3 and it is arranged in main installation riser 13, testing agency 15 is arranged on mounting bracket 14；Open the main lower end of installation riser 13
Provided with the square groove 1301 passed through for fixture 11, the axis of guide positioned at the both sides of square groove 1301 is additionally provided with main installation riser 13
1302, the axis of guide 1302 is provided with the second sliding block 1303；Mounting bracket 14 is arranged on the second sliding block 1303 by fixed transverse slat 1401
On, fixed transverse slat 1401 is provided with the lift cylinder 21 of driving the second sliding block 1303 movement, lift cylinder 21 drive it is corrosion-resistant not
Rust steel seamless steel tube Sample testing device 8 moves up and down；Mounting bracket 14 includes the first fixed mount 1402, the and of the second fixed mount 1403
Second guide rail 1404, the lower end of the first fixed mount 1402 are uniformly provided with multiple slotted eyes 18, and the second fixed mount 1403 is provided with driving
The guide cylinder 22 of 3rd sliding block 1405 movement, the lower end of the second fixed mount 1403 is uniformly provided with multiple through holes 19, the second guide rail
1404 one end are connected with the first fixed mount 1402, and the other end of the second guide rail 1404 passes through the 3rd sliding block 1405 and the second fixed mount
1403 connections；
As shown in figure 3 to figure 7, testing agency 15 includes 6~12 sets of valve components 16 and matched with valve component 16 close
17,6~12 sets of valve components 16 of sealing assembly are arranged in slotted eye 18, and valve component 16 includes air inlet pipe 1601, air tap sleeve
1602 and the syringe needle 1603 in air tap sleeve 1602, air tap sleeve 1602 be externally provided with the fixation spiral shell being connected with the first fixed mount 1402
Mother 1604；6~12 sets of seal assemblies 17 are arranged in through hole 19, and seal assembly 17 includes the seal head that through hole 19 is stretched into one end
1701 and sealing nut 1702；Guide cylinder 22 drives the second fixed mount 1403 to be slid back and forth on the second guide rail 1404, and will
Seal assembly 17 on second fixed mount 1403 docks with the valve component 16 on the first fixed mount 1402；Whole operation mistake
Cheng Shifen flexibly, conveniently, is not required to manually, to install workpiece, on the one hand to save manpower, on the other hand also improve detection
Accuracy and security.
The course of work of air-tight test platform of the present invention is as follows：
When in use, full water will be first stored in tank 3, then each workpiece for needing to detect will be sequentially placed into resistance on fixture 11
Corrode on stainless-steel seamless pipe sample cell 1101, and put workpiece neatly with flattening mechanism 12 is led, start motor 20, control
Clamp base 10 processed is moved on the first guide rail 9 below corrosion-resistant stainless steel seamless steel pipe Sample testing device 8, starts lifting
Cylinder 21 drives corrosion-resistant stainless steel seamless steel pipe Sample testing device 8 to move up and down, and adjusts it at correct position, restarts
Guide cylinder 22 drives the second fixed mount 1403 to be slid back and forth on the second guide rail 1404, and will be close on the second fixed mount 1403
Sealing assembly 17 docks one by one with workpiece to be tested respectively with the valve component 16 on the first fixed mount 1402, then passes through
Gas is urged to the air inlet pipe 1601 of valve component 16 by air pump, so as to enter to corrosion-resistant stainless steel seamless steel pipe sample to be detected
Row air tightness test, meanwhile, the system pressure data that control assembly 4 gathers pressure sensor in real time is transferred to display 6, side
Convenient to operate personnel are acquired, analyze and real-time monitoring.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
- A kind of 1. preparation technology of corrosion-resistant stainless steel seamless steel pipe, it is characterised in that the corrosion-resistant stainless steel seamless steel pipe Chemical composition and mass percent be：N：0.25-0.27%, C：0.018-0.035%, P：0.035-0.055%, S： 0.003-0.005%, Si：0.4-0.6%, Ni：7.0-7.6%, Cr：26.5-27.2%, Mo：3.5-3.7%, Mn：1.00~ 1.40%, Cu：0.10-0.12%, surplus Fe；The corrosion-resistant stainless steel seamless steel pipe is prepared by following operational sequence：Round steel inspection-hot piercing-pickling-inspection The-the first cold rolling-the-the first solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-soldering tip-profit is ground in running repair Cunning-cold-drawn-the-the second solution treatment of deoiling-aligning-Pipe Cutting-pickling-inspection reconditioning-the second cold rolling-is deoiled-light The experiment of bright heat treatment-aligning-production tube with examine-whether qualified feed back-scale-cleaning-mark-packaging；Wherein：The production tube experiment includes following process successively with examining：Air-tight test-destructive testing-surface and Dimension control-ultrasonic inspection-eddy-current test-water pressure test；The hot piercing process, Φ 75mm round steel is worn into by external diameter 75mm, wall thickness 6.0mm centre by hot piercing equipment Pipe；First cold rolling process, cross cold-rolling equipment and intervalve is cold-rolled to external diameter 55mm, wall thickness 3.5mm intervalve；The first solution treatment process, treatment temperature are 700-800 DEG C, soaking time 4-5.5 minutes；The cold-drawn process, cross cold-drawn equipment and intervalve is cold drawing to external diameter 40mm, wall thickness 2.5mm intervalve；The second solution treatment process, using protective atmosphere light solution heat treatment, the protective atmosphere is exceeded using purity 99.99% pure hydrogen, the heat treatment temperature of the protective atmosphere light solution heat treatment is 980-1100 DEG C, soaking time 6-8 Minute；Second cold rolling, cross cold-rolling equipment and intervalve is cold-rolled to 32.54~32.56mm of external diameter, wall thickness 1.98-2.00mm's Production tube；The air-tight test process is that use can enter for the air-tight test platform of the corrosion-resistant stainless steel seamless steel pipe Row experiment；The destructive testing process is the corrosion-resistant high pressure resistant destruction that use can be directed to the corrosion-resistant stainless steel seamless steel pipe Test device；The water pressure test process is the hydrostatic testing machine that use can be directed to the corrosion-resistant stainless steel seamless steel pipe；32.54~32.56mm of external diameter of corrosion-resistant stainless steel seamless steel pipe, wall thickness 1.98- are obtained by above-mentioned preparation technology 2.00mm, external diameter and wall thickness dimension deviation are in ± 0.01mm；Inner wall roughness Ra is less than or equal to 0.4 μm, outer wall roughness Ra Less than or equal to 0.3 μm.
- 2. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 1, it is characterised in that in gas Air-tight test platform employed in tightness test process includes housing (1), and described housing (1) includes the first housing (101) and the second housing (102), interior be provided with of first housing (101) are used to detect corrosion-resistant stainless steel seamless steel pipe sample The tank (3) of air-tightness, second housing (102) is interior to be provided with control assembly (4), is provided with above second housing (102) Operating desk (5) and display (6), described operating desk (5) are provided with corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing (7) With corrosion-resistant stainless steel seamless steel pipe Sample testing device (8)；Described corrosion-resistant stainless steel seamless steel pipe sample apparatus for placing (7) includes the first guide rail (9), clamp base (10), folder Have (11) and lead flattening mechanism (12), first guide rail (9) is arranged on the centre of the operating desk (5), the clamp base (10) lower section is provided with the first sliding block (1001), and first sliding block (1001) can be slided on first guide rail (9)；The folder Tool (11) is arranged in clamp base (10), and the fixture (11) upper surface is provided with multiple corrosion-resistant stainless steel seamless steel pipe samples Product groove (1101)；The flattening mechanism (12) of leading includes leading flat cylinder (1201) and flat guiding plate (1202), the flat guiding plate (1202) The side of the fixture (11) is set in parallel in, described flat cylinder (1201) one end of leading is connected with the flat guiding plate (1202), separately One end is fixed on the operating desk (5) by support (1203)；Described corrosion-resistant stainless steel seamless steel pipe Sample testing device (8) include main installation riser (13), mounting bracket (14) and Testing agency (15), the main installation riser (13) are arranged on the operating desk (5) close to the one of first housing (101) End, the mounting bracket (14) are located above the tank (3) and are arranged on the main installation riser (13), the testing agency (15) it is arranged on the mounting bracket (14)；Main installation riser (13) lower end offers the side passed through for the fixture (11) Shape groove (1301), the axis of guide (1302) positioned at the square groove (1301) both sides is additionally provided with the main installation riser (13), The axis of guide (1302) is provided with the second sliding block (1303)；The mounting bracket (14) is arranged on institute by fixed transverse slat (1401) State on the second sliding block (1303), the mounting bracket (14) includes the first fixed mount (1402), the second fixed mount (1403) and second Guide rail (1404), the lower end of first fixed mount (1402) are uniformly provided with multiple slotted eyes (18), second fixed mount (1403) lower end is uniformly provided with multiple through holes (19), described second guide rail (1404) one end and first fixed mount (1402) Connection, the second guide rail (1404) other end are connected by the 3rd sliding block (1405) with second fixed mount (1403)；Institute Stating testing agency (15) includes more set valve components (16) and the more set seal assemblies to match with the valve component (16) (17), cover the valve component (16) to be arranged in the slotted eye (18) more, cover the seal assembly (17) more and be arranged at In the through hole (19).
- 3. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Housing (1) below be provided with roller (2).
- 4. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described The one end of first guide rail (9) away from the fixture (11) is provided with motor (20).
- 5. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Fixed transverse slat (1401) is provided with the lift cylinder (21) for driving second sliding block (1303) mobile.
- 6. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Second fixed mount (1403) is provided with the guide cylinder (22) for driving the 3rd sliding block (1405) mobile.
- 7. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Valve component (16) and the seal assembly (17) are provided with 6~12 sets.
- 8. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Valve component (16) includes air inlet pipe (1601), air tap sleeve (1602) and the syringe needle in the air tap sleeve (1602) (1603), the air tap sleeve (1602) is externally provided with the fixing nut (1604) being connected with first fixed mount (1402).
- 9. according to a kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe described in claim 2, it is characterised in that described Seal assembly (17) includes the seal head (1701) and sealing nut (1702) that the through hole (19) are stretched into one end.
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| CN201710762093.5A CN107641773A (en) | 2017-08-30 | 2017-08-30 | A kind of preparation technology of corrosion-resistant stainless steel seamless steel pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109317932A (en) * | 2018-11-27 | 2019-02-12 | 上海新行不锈钢管有限公司 | A kind of automobile stainless steel jointless oil pipe |
| EP3640352A1 (en) * | 2018-10-17 | 2020-04-22 | AB Sandvik Materials Technology | Method of producing tube of duplex stainless steel |
| CN111112339A (en) * | 2019-12-31 | 2020-05-08 | 南京沃尔德特钢有限公司 | Method for manufacturing seamless stainless steel heat exchanger tube |
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| CN102282273A (en) * | 2009-01-19 | 2011-12-14 | 住友金属工业株式会社 | Process for production of duplex stainless steel pipe |
| CN103361564A (en) * | 2013-07-16 | 2013-10-23 | 江苏银环精密钢管股份有限公司 | Super duplex stainless steel seamless steel tube and preparation method |
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| CN101755059A (en) * | 2007-07-20 | 2010-06-23 | 住友金属工业株式会社 | Process for production of duplex stainless steel tubes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3640352A1 (en) * | 2018-10-17 | 2020-04-22 | AB Sandvik Materials Technology | Method of producing tube of duplex stainless steel |
| CN109317932A (en) * | 2018-11-27 | 2019-02-12 | 上海新行不锈钢管有限公司 | A kind of automobile stainless steel jointless oil pipe |
| CN111112339A (en) * | 2019-12-31 | 2020-05-08 | 南京沃尔德特钢有限公司 | Method for manufacturing seamless stainless steel heat exchanger tube |
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