CN104480408B - A kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube and production technology - Google Patents
A kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube and production technology Download PDFInfo
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- CN104480408B CN104480408B CN201410749596.5A CN201410749596A CN104480408B CN 104480408 B CN104480408 B CN 104480408B CN 201410749596 A CN201410749596 A CN 201410749596A CN 104480408 B CN104480408 B CN 104480408B
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Abstract
nullThe invention discloses a kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube，The mass percent of its component is: C:0.01 0.03%，S:0.020 0.030%，P:0.025 0.035%,Si:0.25 0.28%，Mn:1.6 1.8%，Ni:9.8 10.2%，Cr:18.5 18.8%，Ti:0.42 0.45%，Cu:0.12 0.15%，Mg:0.05 0.08%，Na:0.02 0.04%,Mo:1 2%，V:2.5 2.8%，Compound rare-earth: 3.2 3.5%，Surplus is Fe，And provide the production technology of this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube，This 0Cr18Ni9 minor diameter seamless capillary stainless steel tube not only antioxygenic property is good，Tensile strength and yield strength are high.
Description
Technical field
The present invention relates to stainless steel tube, a kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube and production technology.
Background technology
China has become steel pipe's production and consumption big country, but equipment and product quality have bigger gap with advanced developed country,
Especially minor diameter seamless capillary stainless steel tube is with high content of technology, and manufacture difficulty is big, for a long time, always by abroad being monopolized,
Mainly there are Japan, France, Germany and a U.S. etc., China's substantially dependence on import, but the raw material of costliness and supporting import charges,
To largely restrict the level of the productive forces of China, even affect the sound development of whole industry；In prior art, owing to becoming
Point and technique unreasonable, thus cause seamless capillary stainless steel tube antioxygenic property poor, tensile strength and high-yield strength are the highest,
The problems such as surface roughness is higher, and service life is short.
Summary of the invention
The technical problem to be solved is, for the shortcoming of above prior art, propose a kind of 0Cr18Ni9 minor diameter without
Seam capillary stainless steel tube and production technology, this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube not only antioxygenic property is good, tension
Intensity and yield strength are high, smooth surface, and wearability is good, and good looking appearance improves decay resistance, and service life is long, and
And this convenient production process operation, low cost, and the process-cycle can be shortened, improve the quality of product, meet different operating mode
Need.
In order to solve above-mentioned technical problem, the technical scheme is that and be accomplished by: a kind of 0Cr18Ni9 is little directly
Footpath is seamless capillary stainless steel tube, the mass percent of its component is: C:0.01-0.03%, S:0.020-0.030%, P:
0.025-0.035%, Si:0.25-0.28%, Mn:1.6-1.8%, Ni:9.8-10.2%, Cr:18.5-18.8%, Ti:0.42-0.45%,
Cu:0.12-0.15%, Mg:0.05-0.08%, Na:0.02-0.04%, Mo:1-2%, V:2.5-2.8%, complex element:
3.2-3.5%, surplus is Fe；
Described complex element by the mass percent of its component is: Pr:16.3-16.5%, Sm:5.2-5.5%, Dy:6.1-6.3%,
Ac:1.5-1.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, surplus is Tm；
So, add Mn element, its intensity can be improved, and increase fatigue resistance, add V element, energy in heat treatment
Crystal grain thinning, can strengthen its intensity, toughness, anticorrosive, the wear-resisting and load that withstands shocks etc., add P element, can refine
Crystal grain and its superheated susceptivity of reduction and temper brittleness, improve intensity, can improve resistant to hydrogen, nitrogen, ammonia under weather-resistant and high temperature
Corrosion, adds Cr and Ni trace element, can improve its wear-resisting ability ability and increase its intensity, improving its fusing point, increase anti-height
The ability of temperature, is also added into rare earth element simultaneously, forms the crystal grain of densification, and is evenly distributed, increase it in forging process
Intensity, improves its combination property, produces beyond thought technique effect.
Present invention also offers the production technology of this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube:
(1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and the centre of wall thickness by cold-rolling equipment
Base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；
(2): step (1) gained intermediate blank pipe is carried out heat treatment for the first time, first temperature is brought up to 1280-1290 DEG C, protect
Temperature 30-40min, then drop to 770-780 DEG C with the water-cooled speed of 5-8 DEG C/s, it is incubated 15-25min, then with 10-12 DEG C/s's
Oil speed of cooling is down to 350-360 DEG C, and last air cooling is to room temperature；
(3): by the intermediate blank pipe after step (2) heat treatment by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness,
Pipe detector for outer diameter error ± 0.08mm, wall thickness deflection ± 0.06mm；
(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface, thickness
For 0.02-0.04mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 980-990 DEG C, is incubated 30-45min, so
Rear employing helium is down to 580-585 DEG C with 3-6 DEG C/s rate of cooling, then is down to 230-240 DEG C with the oily speed of cooling of 8-10 DEG C/s,
Last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5-6MPa, fiber cloth is advanced to pass
Carry out the wiping of many frequencys inside finished-product straight pipe, carry out deoiling and cleaning process；
(6): the production tube after using pure hydrogen protective gas to process cleaning carries out brightness heat treatment, and heat treatment temperature is 900 ± 5
DEG C, heat treatment time is 30-35min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
So, after this production technology, this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube not only antioxygenic property is good, anti-
Tensile strength and yield strength are high, smooth surface, and this convenient production process operation, low cost, and its inner surface coating again
There is equadag coating, not only increase intensity and the wearability on surface, moreover it is possible to improve its antioxygenic property and decay resistance, increase
Add its service life.
The technical scheme that the present invention limits further is:
Aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, the mass percent of its component is: C:0.01%, S:0.020%,
P:0.025%, Si:0.25%, Mn:1.6%, Ni:9.8%, Cr:18.5%, Ti:0.42%, Cu:0.12%, Mg:0.05%,
Na:0.02%, Mo:1%, V:2.5%, complex element: 3.2%, surplus is Fe；Complex element is by the percent mass of its component
Ratio is: Pr:16.3%, Sm:5.2%, Dy:6.1%, Ac:1.5%, Nd:12%, Eu:11%, Tb:7.2%, and surplus is
Tm。
Aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, the mass percent of its component is: C:0.02%, S:0.025%,
P:0.028%, Si:0.26%, Mn:1.7%, Ni:9.9%, Cr:18.6%, Ti:0.44%, Cu:0.13%, Mg:0.07%,
Na:0.03%, Mo:1.5%, V:2.7%, complex element: 3.3%, surplus is Fe；Complex element is by the quality hundred of its component
Proportion by subtraction is: Pr:16.4%, Sm:5.4%, Dy:6.2%, Ac:1.7%, Nd:13%, Eu:12%, Tb:7.4%, surplus
For Tm.
Aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, the mass percent of its component is: C:0.03%, S:0.030%,
P:0.035%, Si:0.28%, Mn:1.8%, Ni:10.2%, Cr:18.8%, Ti:0.45%, Cu:0.15%, Mg:0.08%,
Na:0.04%, Mo:2%, V:2.8%, complex element: 3.5%, surplus is Fe；Complex element is by the percent mass of its component
Ratio is: Pr:16.5%, Sm:5.5%, Dy:6.3%, Ac:1.8%, Nd:14%, Eu:13%, Tb:7.5%, and surplus is
Tm。
The production technology of aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, this production technology sequentially includes the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to by cold-rolling equipment the intermediate blank pipe of required pipe external diameter and wall thickness,
Pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is carried out at the hottest
Reason, first brings up to 1280 DEG C by temperature, is incubated 30min, then drops to 770 DEG C with the water-cooled speed of 5 DEG C/s, is incubated 15min,
Being down to 350 DEG C with the oily speed of cooling of 10 DEG C/s again, last air cooling is to room temperature；(3): by the intermediate blank after step (2) heat treatment
Pipe is by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall thickness deflection
±0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface,
Thickness is 0.02mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 980 DEG C, is incubated 30min, then uses helium
Gas is down to 580 DEG C with 3 DEG C/s rate of cooling, then is down to 230 DEG C with the oily speed of cooling of 8 DEG C/s, and last air cooling is to room temperature；(5):
Use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5MPa, advance fiber cloth to pass inside finished-product straight pipe
Carry out the wiping of many frequencys, carry out deoiling and cleaning process；(6): the production tube after using pure hydrogen protective gas to process cleaning is carried out
Brightness heat treatment, heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 30min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
The production technology of aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, this production technology sequentially includes the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to by cold-rolling equipment the intermediate blank pipe of required pipe external diameter and wall thickness,
Pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is carried out at the hottest
Reason, first brings up to 1290 DEG C by temperature, is incubated 40min, then drops to 780 DEG C with the water-cooled speed of 8 DEG C/s, is incubated 25min,
Being down to 360 DEG C with the oily speed of cooling of 12 DEG C/s again, last air cooling is to room temperature；(3): by the intermediate blank after step (2) heat treatment
Pipe is by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall thickness deflection
±0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface,
Thickness is 0.04mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 990 DEG C, is incubated 45min, then uses helium
Gas is down to 585 DEG C with 6 DEG C/s rate of cooling, then is down to 240 DEG C with the oily speed of cooling of 10 DEG C/s, and last air cooling is to room temperature；(5):
Use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 6MPa, advance fiber cloth to pass inside finished-product straight pipe
Carry out the wiping of many frequencys, carry out deoiling and cleaning process；(6): the production tube after using pure hydrogen protective gas to process cleaning is carried out
Brightness heat treatment, heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 35min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
The production technology of aforesaid 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, this production technology sequentially includes the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to by cold-rolling equipment the intermediate blank pipe of required pipe external diameter and wall thickness,
Pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is carried out at the hottest
Reason, first brings up to 1285 DEG C by temperature, is incubated 38min, then drops to 775 DEG C with the water-cooled speed of 6 DEG C/s, is incubated 20min,
Being down to 355 DEG C with the oily speed of cooling of 11 DEG C/s again, last air cooling is to room temperature；(3): by the intermediate blank after step (2) heat treatment
Pipe is by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall thickness deflection
±0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface,
Thickness is 0.03mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 985 DEG C, is incubated 40min, then uses helium
Gas is down to 582 DEG C with 5 DEG C/s rate of cooling, then is down to 235 DEG C with the oily speed of cooling of 9 DEG C/s, and last air cooling is to room temperature；(5):
Use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5.5MPa, advance fiber cloth to pass in finished-product straight pipe
Portion carries out the wiping of many frequencys, carries out deoiling and cleaning process；(6): the production tube after using pure hydrogen protective gas to process cleaning enters
Row brightness heat treatment, heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 33min, is cooled to room temperature afterwards and carries out at aligning
Reason；(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
The invention has the beneficial effects as follows: add Mn element, its intensity can be improved, and increase fatigue resistance, add V element,
In heat treatment can crystal grain thinning, can strengthen its intensity, toughness, anticorrosive, the wear-resisting and load that withstands shocks etc., add P
Element, energy crystal grain thinning and its superheated susceptivity of reduction and temper brittleness, improve intensity, can improve under weather-resistant and high temperature
Resistant to hydrogen, nitrogen, ammonia corrosion, add Cr and Ni trace element, can improve its wear-resisting ability ability and increase its intensity, improves it and melts
Point, increases the ability of high temperature resistance, is also added into rare earth element simultaneously, forms the crystal grain of densification, and be distributed in forging process
Uniformly, increase its intensity, improve its combination property, produce beyond thought technique effect；
After this production technology, this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube not only antioxygenic property is good, tensile strength
High with yield strength, smooth surface, and this convenient production process operation, low cost, and its inner surface is coated with graphite again
Coating, not only increases intensity and the wearability on surface, moreover it is possible to improve its antioxygenic property and decay resistance, is greatly increased it and makes
Use the life-span.
Detailed description of the invention
The present invention is described in further detail below:
Embodiment 1
The present embodiment provides a kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, and the mass percent of its component is: C:
0.01%, S:0.020%, P:0.025%, Si:0.25%, Mn:1.6%, Ni:9.8%, Cr:18.5%, Ti:0.42%,
Cu:0.12%, Mg:0.05%, Na:0.02%, Mo:1%, V:2.5%, complex element: 3.2%, surplus is Fe；Compound
Element by the mass percent of its component is: Pr:16.3%, Sm:5.2%, Dy:6.1%, Ac:1.5%, Nd:12%, Eu:
11%, Tb:7.2%, surplus is Tm；The present embodiment additionally provides the production of this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube
Technique: (1): by constituent content proportioning on request, mother tube is cold-rolled in required pipe external diameter and wall thickness by cold-rolling equipment
Between base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is carried out
Heat treatment, first brings up to 1285 DEG C by temperature, is incubated 38min, then drops to 775 DEG C with the water-cooled speed of 6 DEG C/s, protects
Temperature 20min, then it is down to 355 DEG C with the oily speed of cooling of 11 DEG C/s, last air cooling is to room temperature；(3): by step (2) heat treatment
After intermediate blank pipe by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall thickness
Error ± 0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first with in powdered graphite even application
Surface, thickness is 0.03mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 985 DEG C, is incubated 40min, then
Using helium to be down to 582 DEG C with 5 DEG C/s rate of cooling, then be down to 235 DEG C with the oily speed of cooling of 9 DEG C/s, last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5.5MPa, advance fiber cloth through finished product
Carry out the wiping of many frequencys inside straight tube, carry out deoiling and cleaning process；(6): the one-tenth after using pure hydrogen protective gas that cleaning is processed
QC carries out brightness heat treatment, and heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 33min, is cooled to room temperature afterwards and carries out
Straightening processing；(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
Embodiment 2
The present embodiment provides a kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, and the mass percent of its component is: C:
0.02%, S:0.025%, P:0.028%, Si:0.26%, Mn:1.7%, Ni:9.9%, Cr:18.6%, Ti:0.44%,
Cu:0.13%, Mg:0.07%, Na:0.03%, Mo:1.5%, V:2.7%, complex element: 3.3%, surplus is Fe；Multiple
Closing element by the mass percent of its component is: Pr:16.4%, Sm:5.4%, Dy:6.2%, Ac:1.7%, Nd:13%,
Eu:12%, Tb:7.4%, surplus is Tm；The present embodiment additionally provides this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube
Production technology: (1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and wall thickness by cold-rolling equipment
Intermediate blank pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is entered
Row heat treatment for the first time, first brings up to temperature 1280 DEG C, is incubated 30min, then drops to 770 DEG C with the water-cooled speed of 5 DEG C/s,
Insulation 15min, then it is down to 350 DEG C with the oily speed of cooling of 10 DEG C/s, last air cooling is to room temperature；(3): at step (2) heat
Intermediate blank pipe after reason is by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall
Thick error ± 0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first uses powdered graphite even application
Inner surface, thickness is 0.02mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 980 DEG C, is incubated 30min, so
Rear employing helium is down to 580 DEG C with 3 DEG C/s rate of cooling, then is down to 230 DEG C with the oily speed of cooling of 8 DEG C/s, and last air cooling is to room
Temperature；(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5MPa, fiber cloth is advanced to pass into
Carry out the wiping of many frequencys inside product straight tube, carry out deoiling and cleaning process；(6): after using pure hydrogen protective gas that cleaning is processed
Production tube carries out brightness heat treatment, and heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 30min, is cooled to room temperature afterwards and enters
Row straightening processing；(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
Embodiment 3
The present embodiment provides a kind of 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, and the mass percent of its component is: C:
0.03%, S:0.030%, P:0.035%, Si:0.28%, Mn:1.8%, Ni:10.2%, Cr:18.8%, Ti:0.45%,
Cu:0.15%, Mg:0.08%, Na:0.04%, Mo:2%, V:2.8%, complex element: 3.5%, surplus is Fe；Compound
Element by the mass percent of its component is: Pr:16.5%, Sm:5.5%, Dy:6.3%, Ac:1.8%, Nd:14%, Eu:
13%, Tb:7.5%, surplus is Tm；The present embodiment additionally provides the production of this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube
Technique: (1): by constituent content proportioning on request, mother tube is cold-rolled in required pipe external diameter and wall thickness by cold-rolling equipment
Between base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；(2): step (1) gained intermediate blank pipe is carried out
Heat treatment, first brings up to 1290 DEG C by temperature, is incubated 40min, then drops to 780 DEG C with the water-cooled speed of 8 DEG C/s, protects
Temperature 25min, then it is down to 360 DEG C with the oily speed of cooling of 12 DEG C/s, last air cooling is to room temperature；(3): by step (2) heat treatment
After intermediate blank pipe by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness, pipe detector for outer diameter error ± 0.08mm, wall thickness
Error ± 0.06mm；(4): step (3) gained production tube is carried out second time heat treatment, first with in powdered graphite even application
Surface, thickness is 0.04mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 990 DEG C, is incubated 45min, then
Using helium to be down to 585 DEG C with 6 DEG C/s rate of cooling, then be down to 240 DEG C with the oily speed of cooling of 10 DEG C/s, last air cooling is to room
Temperature；(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 6MPa, fiber cloth is advanced to pass into
Carry out the wiping of many frequencys inside product straight tube, carry out deoiling and cleaning process；(6): after using pure hydrogen protective gas that cleaning is processed
Production tube carries out brightness heat treatment, and heat treatment temperature is 900 ± 5 DEG C, and heat treatment time is 35min, is cooled to room temperature afterwards and enters
Row straightening processing；(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
So by the technical scheme of embodiment, this 0Cr18Ni9 minor diameter seamless capillary stainless steel tube not only antioxygenic property is good,
Tensile strength and yield strength are high, smooth surface, and wearability is good, and good looking appearance improves decay resistance, and service life is long,
And this convenient production process operation, low cost, and the process-cycle can be shortened, improve the quality of product, meet different operating mode
Needs.
Above example is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every according to this
The technological thought that invention proposes, any change done on the basis of technical scheme, within each falling within scope.
Claims (7)
1. a 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, it is characterised in that: the mass percent of its component is: C:
0.01-0.03%, S:0.020-0.030%, P:0.025-0.035%, Si:0.25-0.28%, Mn:1.6-1.8%, Ni:9.8-10.2%,
Cr:18.5-18.8%, Ti:0.42-0.45%, Cu:0.12-0.15%, Mg:0.05-0.08%, Na:0.02-0.04%, Mo:
1-2%, V:2.5-2.8%, complex element: 3.2-3.5%, surplus is Fe；
Described complex element by the mass percent of its component is: Pr:16.3-16.5%, Sm:5.2-5.5%, Dy:6.1-6.3%,
Ac:1.5-1.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, surplus is Tm；
The production technology of wherein said 0Cr18Ni9 minor diameter seamless capillary stainless steel tube, this production technology sequentially includes the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and the centre of wall thickness by cold-rolling equipment
Base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；
(2): step (1) gained intermediate blank pipe is carried out heat treatment for the first time, first temperature is brought up to 1280-1290 DEG C, protect
Temperature 30-40min, then drop to 770-780 DEG C with the water-cooled speed of 5-8 DEG C/s, it is incubated 15-25min, then with 10-12 DEG C/s's
Oil speed of cooling is down to 350-360 DEG C, and last air cooling is to room temperature；
(3): by the intermediate blank pipe after step (2) heat treatment by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness,
Pipe detector for outer diameter error ± 0.08mm, wall thickness deflection ± 0.06mm；
(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface, thickness
For 0.02-0.04mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 980-990 DEG C, is incubated 30-45min, so
Rear employing helium is down to 580-585 DEG C with 3-6 DEG C/s rate of cooling, then is down to 230-240 DEG C with the oily speed of cooling of 8-10 DEG C/s,
Last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5-6MPa, fiber cloth is advanced to pass
Carry out the wiping of many frequencys inside finished-product straight pipe, carry out deoiling and cleaning process；
(6): the production tube after using pure hydrogen protective gas to process cleaning carries out brightness heat treatment, and heat treatment temperature is 900 ± 5
DEG C, heat treatment time is 30-35min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: the matter of its component
Amount percentage ratio is: C:0.01%, S:0.020%, P:0.025%, Si:0.25%, Mn:1.6%, Ni:9.8%, Cr:18.5%,
Ti:0.42%, Cu:0.12%, Mg:0.05%, Na:0.02%, Mo:1%, V:2.5%, complex element: 3.2%, surplus
For Fe；
Described complex element by the mass percent of its component is: Pr:16.3%, Sm:5.2%, Dy:6.1%, Ac:1.5%,
Nd:12%, Eu:11%, Tb:7.2%, surplus is Tm.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: the matter of its component
Amount percentage ratio is: C:0.02%, S:0.025%, P:0.028%, Si:0.26%, Mn:1.7%, Ni:9.9%, Cr:18.6%,
Ti:0.44%, Cu:0.13%, Mg:0.07%, Na:0.03%, Mo:1.5%, V:2.7%, complex element: 3.3%, remaining
Amount is Fe；
Described complex element by the mass percent of its component is: Pr:16.4%, Sm:5.4%, Dy:6.2%, Ac:1.7%,
Nd:13%, Eu:12%, Tb:7.4%, surplus is Tm.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: the matter of its component
Amount percentage ratio is: C:0.03%, S:0.030%, P:0.035%, Si:0.28%, Mn:1.8%, Ni:10.2%, Cr:18.8%,
Ti:0.45%, Cu:0.15%, Mg:0.08%, Na:0.04%, Mo:2%, V:2.8%, complex element: 3.5%, surplus
For Fe；
Described complex element by the mass percent of its component is: Pr:16.5%, Sm:5.5%, Dy:6.3%, Ac:1.8%,
Nd:14%, Eu:13%, Tb:7.5%, surplus is Tm.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: this production technology
Sequentially include the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and the centre of wall thickness by cold-rolling equipment
Base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；
(2): step (1) gained intermediate blank pipe is carried out heat treatment for the first time, first temperature is brought up to 1280 DEG C, be incubated 30min,
Drop to 770 DEG C with the water-cooled speed of 5 DEG C/s again, be incubated 15min, then be down to 350 DEG C with the oily speed of cooling of 10 DEG C/s, finally
Air cooling is to room temperature；
(3): by the intermediate blank pipe after step (2) heat treatment by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness,
Pipe detector for outer diameter error ± 0.08mm, wall thickness deflection ± 0.06mm；
(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface, thickness
For 0.02mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 980 DEG C, is incubated 30min, then use helium with 3
DEG C/s rate of cooling is down to 580 DEG C, then is down to 230 DEG C with the oily speed of cooling of 8 DEG C/s, last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5MPa, fiber cloth is advanced to pass into
Carry out the wiping of many frequencys inside product straight tube, carry out deoiling and cleaning process；
(6): the production tube after using pure hydrogen protective gas to process cleaning carries out brightness heat treatment, and heat treatment temperature is 900 ± 5
DEG C, heat treatment time is 30min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: this production technology
Sequentially include the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and the centre of wall thickness by cold-rolling equipment
Base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；
(2): step (1) gained intermediate blank pipe is carried out heat treatment for the first time, first temperature is brought up to 1290 DEG C, be incubated 40min,
Drop to 780 DEG C with the water-cooled speed of 8 DEG C/s again, be incubated 25min, then be down to 360 DEG C with the oily speed of cooling of 12 DEG C/s, finally
Air cooling is to room temperature；
(3): by the intermediate blank pipe after step (2) heat treatment by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness,
Pipe detector for outer diameter error ± 0.08mm, wall thickness deflection ± 0.06mm；
(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface, thickness
For 0.04mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 990 DEG C, is incubated 45min, then use helium with 6
DEG C/s rate of cooling is down to 585 DEG C, then is down to 240 DEG C with the oily speed of cooling of 10 DEG C/s, last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 6MPa, fiber cloth is advanced to pass into
Carry out the wiping of many frequencys inside product straight tube, carry out deoiling and cleaning process；
(6): the production tube after using pure hydrogen protective gas to process cleaning carries out brightness heat treatment, and heat treatment temperature is 900 ± 5
DEG C, heat treatment time is 35min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
0Cr18Ni9 minor diameter the most according to claim 1 seamless capillary stainless steel tube, it is characterised in that: this production technology
Sequentially include the following steps:
(1): by constituent content proportioning on request, mother tube is cold-rolled to required pipe external diameter and the centre of wall thickness by cold-rolling equipment
Base pipe, pipe detector for outer diameter error ± 0.20mm, wall thickness deflection ± 0.15mm；
(2): step (1) gained intermediate blank pipe is carried out heat treatment for the first time, first temperature is brought up to 1285 DEG C, be incubated 38min,
Drop to 775 DEG C with the water-cooled speed of 6 DEG C/s again, be incubated 20min, then be down to 355 DEG C with the oily speed of cooling of 11 DEG C/s, finally
Air cooling is to room temperature；
(3): by the intermediate blank pipe after step (2) heat treatment by cold-rolling equipment finish rolling to required pipe external diameter and the production tube of wall thickness,
Pipe detector for outer diameter error ± 0.08mm, wall thickness deflection ± 0.06mm；
(4): step (3) gained production tube is carried out second time heat treatment, first with powdered graphite even application inner surface, thickness
For 0.03mm, then with the constant temperature speed of 5 DEG C/s, production tube is heated to 985 DEG C, is incubated 40min, then use helium with 5
DEG C/s rate of cooling is down to 582 DEG C, then is down to 235 DEG C with the oily speed of cooling of 9 DEG C/s, last air cooling is to room temperature；
(5): use the fiber cloth soaking acetone, and by the pressure of high pressure air rifle, pressure 5.5MPa, fiber cloth is advanced to pass
Carry out the wiping of many frequencys inside finished-product straight pipe, carry out deoiling and cleaning process；
(6): the production tube after using pure hydrogen protective gas to process cleaning carries out brightness heat treatment, and heat treatment temperature is 900 ± 5
DEG C, heat treatment time is 33min, is cooled to room temperature afterwards and carries out straightening processing；
(7): to will through the finished-product straight pipe Non-Destructive Testing after step (6) straightening processing, detect qualified after pack warehouse-in.
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|---|---|---|---|---|
| JP2007270265A (en) * | 2006-03-31 | 2007-10-18 | Sumitomo Metal Ind Ltd | Method for manufacturing duplex stainless steel seamless pipe |
| CN101070582A (en) * | 2007-06-12 | 2007-11-14 | 江阴康瑞不锈钢制品有限公司 | Austenite cold-forged stainless-steel and steel wire making method |
| JP4258679B1 (en) * | 2007-10-04 | 2009-04-30 | 住友金属工業株式会社 | Austenitic stainless steel |
| CN101524947A (en) * | 2009-04-10 | 2009-09-09 | 泰州嘉诚精密合金厂 | High-performance stainless steel wheel hub of automobile and manufacturing method thereof |
| CN102634739A (en) * | 2012-05-03 | 2012-08-15 | 江苏锦越航空合金材料有限公司 | Corrosion-resisting stainless steel and manufacturing process thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007270265A (en) * | 2006-03-31 | 2007-10-18 | Sumitomo Metal Ind Ltd | Method for manufacturing duplex stainless steel seamless pipe |
| CN101070582A (en) * | 2007-06-12 | 2007-11-14 | 江阴康瑞不锈钢制品有限公司 | Austenite cold-forged stainless-steel and steel wire making method |
| JP4258679B1 (en) * | 2007-10-04 | 2009-04-30 | 住友金属工業株式会社 | Austenitic stainless steel |
| CN101524947A (en) * | 2009-04-10 | 2009-09-09 | 泰州嘉诚精密合金厂 | High-performance stainless steel wheel hub of automobile and manufacturing method thereof |
| CN102634739A (en) * | 2012-05-03 | 2012-08-15 | 江苏锦越航空合金材料有限公司 | Corrosion-resisting stainless steel and manufacturing process thereof |
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Denomination of invention: A 0Cr18Ni9 small diameter seamless capillary stainless steel tube and its production process Effective date of registration: 20211117 Granted publication date: 20160831 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Huishan branch Pledgor: WUXI XINCHANG STEEL PIPE Co.,Ltd. Registration number: Y2021320010479 |
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