CN103484639B - The production technology of cold rolling hard state stainless steel band - Google Patents
The production technology of cold rolling hard state stainless steel band Download PDFInfo
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- CN103484639B CN103484639B CN201310413492.2A CN201310413492A CN103484639B CN 103484639 B CN103484639 B CN 103484639B CN 201310413492 A CN201310413492 A CN 201310413492A CN 103484639 B CN103484639 B CN 103484639B
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Abstract
The invention discloses the production technology of a kind of cold rolling hard state stainless steel band; rectify stress relief annealing including hot-drawn to process; this process includes: is aligned in protective gas by finished product stainless steel band in stress annealing stove and makes annealing treatment, and obtains described cold rolling hard state stainless steel band.The production technology hot-drawn of the cold rolling hard state stainless steel band of the present invention is rectified step and is substituted cold drawn rectifying and two steps of destressing, shortens production technology and production time, improves production efficiency；This hot-drawn is rectified step and is completed within one device, saves equipment and space.It is thorough that the production technology of the cold rolling hard state stainless steel band of the present invention eliminates stress, can obtain the cold rolling hard state stainless steel band that template is good, can pass through milling train direct panel surface roughness, increases product variety, improves product competitiveness.
Description
Technical field
The present invention relates to the production technical field of stainless steel band, specifically, relate to a kind of cold rolling hard state not
The production technology of rust steel band.
Background technology
In the production industry of cold rolling hard state stainless steel band, steel band indeformable after requiring punching press need to be carried out
Elimination stress process, removing de-stress and template is well the most important prescription of this series products, cold rolling not
Rust steel band is this type of products material.
The production technology of cold rolling hard state stainless steel band, dise knife in the most traditional diamond in prior art
Sheet, etching and weaving reed stainless steel band eliminate stress and improve the technique of template must have cold drawn rectify and
Two steps of destressing, are completed by distinct device, and the production time is longer, relatively inefficient.
Summary of the invention
The technical problem to be solved is that existing technique includes cold drawn rectifying and destressing, production time
Longer, relatively inefficient.
Technical scheme is as follows:
The production technology of a kind of cold rolling hard state stainless steel band, rectifys stress relief annealing including hot-drawn and processes, should
Process includes: is aligned in protective gas by finished product stainless steel band in stress annealing stove and makes annealing treatment,
Obtain described cold rolling hard state stainless steel band.
Further: it is 500～800 DEG C that the temperature of stress relief annealing process is rectified in described hot-drawn, described finished product
Stainless steel band tension force in described stress relief annealing stove is 10～50KN, and unit tension is
16-34kg/mm2, speed is 4 ms/min～30 ms/min, and described hot-drawn is rectified stress relief annealing and processed
Protective gas be nitrogen hydrogen mixeding gas, pure hydrogen gas or pure nitrogen gas；Described nitrogen hydrogen mixeding gas is
Volume content be 25% nitrogen and volume content be the hydrogen of 75%.
Further: the porch of described stress relief annealing stove and exit are provided with the described finished product of control not
The tension level(l)ing device of the template of rust steel band.
Further, described hot-drawn is rectified before stress relief annealing processes and is also included: get the raw materials ready: rustless steel is cold
Strip rolling welding band-leading obtains stainless steel cold-rolled steel band blank；Semi-finished product roll: by described stainless-steel cold-rolling
The rolling of steel band blank is semi-finished product stainless steel band；Semi-finished product stainless steel band ungrease treatment: to described semi-finished product
Stainless steel band is carried out, and removes the oils and fats of described semi-finished product stainless steel band surface；Solution treatment: by institute
State semi-finished product stainless steel band light continuous heat in protective gas；Finished product rolls: by described semi-finished product
Rolling stainless steel band is finished product stainless steel band；Finished product stainless steel band ungrease treatment: to described finished product rustless steel
Band is carried out, and removes the oils and fats of described finished product stainless steel band surface.
Further, also include: divide after described semi-finished product stainless steel band ungrease treatment and described finished product roll
Not carrying out hot-air seasoning process, the temperature of hot blast is 100-120 DEG C, steel belt operating speed is 15～30 meters/
Minute.
Further: described in the get the raw materials ready thickness of the described stainless steel cold-rolled steel band obtained be 0.6～1.5mm.
Further: the equipment that the rolling of described semi-finished product uses is 20 roller precision cold-rolled units；Described half becomes
The roll-force used in the product operation of rolling is 1500～3000KN, and rolling tensile force is 100～200KN, rolls
Speed processed is 100～300mpm, and the thickness of described semi-finished product stainless steel band is 0.15～0.75mm.
Further: described semi-finished product stainless steel band ungrease treatment and described finished product stainless steel band ungrease treatment
Temperature is 60～80 DEG C.
Further: the equipment that described solution treatment uses is bright continuous annealing furnace, and described semi-finished product are stainless
Steel band is 9～30mpm by the speed of described bright continuous annealing furnace, the heating temperature of described solution treatment
Degree is 1020～1145 DEG C, and the tapping temperature of described solution treatment is less than 60 DEG C, described solution treatment
Protective gas be volume content be 25% nitrogen and the mixed gas of hydrogen that volume content is 75% composition.
Further: the equipment that the rolling of described finished product uses is 20 roller precision cold-rolled units, and described finished product rolls
System uses bicone intermediate calender rolls, and the roll-force of described finished product rolling is 1000～2500KN, and rolling tensile force is
50～120KN, mill speed is 100-400mpm, the thickness of described finished product stainless steel band be 0.05～
0.5mm, after the rolling of described finished product, template limit wave height is less than 3% less than 3mm, chilled box.
The technique effect of the present invention is as follows:
1, the production technology hot-drawn of the cold rolling hard state stainless steel band of the present invention rectify step substitute cold drawn rectify and go
Two steps of stress, shorten production technology and production time, improve production efficiency.
2, to rectify step the completeest in the hot-drawn of the production technology of the cold rolling hard state stainless steel band of the present invention
Become, save equipment and space.
3, the production technology of the cold rolling hard state stainless steel band of the present invention eliminates stress thoroughly, obtains template good
Cold rolling hard state stainless steel band.
4, the production technology of the cold rolling hard state stainless steel band of the present invention is without cold drawn strong operation, can pass through
Milling train direct panel surface roughness, increases product variety, improves product competitiveness.
Accompanying drawing explanation
Fig. 1 is the flow chart of the production technology of the cold rolling hard state stainless steel band of the present invention；
Fig. 2 is the structural representation of the stress relief annealing stove being provided with tension level(l)ing device of the present invention.
Detailed description of the invention
As it is shown in figure 1, be the flow chart of the production technology of the cold rolling hard state stainless steel band of the present invention.This work
The step of skill is as follows:
Step S1: get the raw materials ready
Stainless steel cold-rolled steel band welding band-leading is obtained stainless steel cold-rolled steel band blank.Wherein stainless-steel cold-rolling
The thickness of steel band is preferably 0.6～1.5mm.
Step S2: semi-finished product roll
The stainless steel cold-rolled steel band blank using 20 roller precision cold-rolled units step S1 to be obtained is rolled into
Semi-finished product stainless steel band.Semi-finished product rolling roll-force be 1500～3000KN, rolling tensile force be 100～
200KN, mill speed is 100～300 ms/min (meters per minute, mpm).Semi-finished product
After rolling, the thickness of semi-finished product stainless steel band is preferably 0.15～0.75mm, this semi-finished product stainless steel band
Thickness deviation is ± 0.005～± 0.01mm.
The purpose of semi-finished product rolling is that steel band is rolled down to required thickness.
Step S3: semi-finished product stainless steel band ungrease treatment
Owing to using mineral oil to cool down, lubricate in the semi-finished product operation of rolling, therefore rolling will be by de-
Fat processes and is cleaned up by semi-finished product stainless steel band.
The semi-finished product stainless steel band using alkaline defatting agent step S2 to be obtained is carried out at 60～80 DEG C,
Remove the oils and fats of semi-finished product stainless steel band surface.
Step S4: solution treatment
Finished product stainless steel band step S3 obtained in bright continuous annealing furnace is light in protective gas
Continuous heat.This semi-finished product stainless steel band is 9～30mpm by the speed of bright continuous annealing furnace,
The heating-up temperature of solution treatment is 1020～1145 DEG C, and the tapping temperature of solution treatment is less than 60 DEG C.Protect
Protect gas be volume content be the N of 25%2With 75% H2Mixed gas.
Semi-finished product rolling belongs to cold-rolling process, and it is the rolling carried out under metal recrystallization temperature, metal
It is destroyed and can not produce recrystallization at cold rolling middle crystal grain to recover, cause the refinement of metal generation crystal grain and processing
Hardening.After processing hardening reaches to a certain degree, rolling cannot be proceeded, need softened heat
Process is allowed to recover plasticity.Stainless softening heat treatment is " solution treatment ".Therefore, at solid solution
The processing hardening produced when reason is to eliminate cold rolling, improves organizational structure and metallographic structure, in order under
The rolling of one step；Make steel band obtain suitable grain size, it is ensured that steel band grain size number after solution treatment simultaneously
More than 11 grades.The annealing temperature of solution treatment is high, speed is slow, and bating effect is good.
Step S5: finished product rolls
The semi-finished product rolling stainless steel band using 20 roller precision cold-rolled units step S4 to be obtained becomes finished product
Stainless steel band.This 20 roller precision cold-rolled unit uses bicone intermediate calender rolls.The roll-force of finished product rolling is
1000～2500KN, rolling tensile force is 50～120KN, and mill speed is 100-400mpm.Finished product rolls
After system, the thickness of finished product stainless steel band is 0.05～0.5mm, the thickness deviation of finished product stainless steel band is ±
0.003～± 0.008mm, template limit wave height is less than 3mm, and chilled box is less than 3%.
The purpose of finished product rolling is to ensure that working modulus and thickness.Product hardness is to be determined by working modulus and material
's.Rustless steel has processing hardening, and the biggest hardness of working modulus is the highest, so for obtaining certain hardness
Working modulus to be controlled, namely controls the thickness of middle product.
After solution treatment, steel band becomes soft state, it is therefore desirable to less rolling tensile force, otherwise easily drawing down,
Break.
Step S6: finished product stainless steel band ungrease treatment
Owing to the finished product operation of rolling using mineral oil cool down, lubricate, therefore roll and will pass through defat
Process and finished product stainless steel band is cleaned up.
The finished product stainless steel band using alkaline defatting agent step S5 to be obtained is carried out at 60～80 DEG C,
Remove the oils and fats of finished product stainless steel band surface.
Step S7: hot-drawn is rectified stress relief annealing and processed
As in figure 2 it is shown, the structure for the stress relief annealing stove being provided with tension level(l)ing device of the present invention is shown
It is intended to.The porch of stress relief annealing stove 201 and exit are respectively arranged with and control finished product stainless steel band
The tension level(l)ing device 202 of template and tension level(l)ing device 203.
Finished product stainless steel band step S7 obtained in stress relief annealing stove 201 is aligned in protective gas
And make annealing treatment, obtain cold rolling hard state stainless steel band.The temperature of stress relief annealing process is rectified in hot-drawn
500～800 DEG C.Finished product stainless steel band tension force in stress relief annealing stove is 5～50KN, unit tension
15-40kg/mm2, speed is 4mpm～30mpm.Protective gas is nitrogen hydrogen mixeding gas, pure hydrogen gas
Or pure nitrogen gas.Nitrogen hydrogen mixeding gas be volume content be 25%N2And 75%H2。
The foundation selecting the tension force in this stress relief annealing stove 201 is as follows: the Main Function of this tension force is to adjust
Complete plate, eliminates limit wave, coordinates uniform temperature, while Stress Release, relies on hightension by steel band
Stretching leveling.Tension force in stress relief annealing stove 201 determines according to the tensile strength of steel band, unit tension
15-30% for tensile strength.
Select this hot-drawn to rectify temperature that stress relief annealing processes according to as follows: elimination stress is rectified in this hot-drawn
The temperature of annealing belongs to middle temperature, is also rustless steel sensitization silicon carbide.Utilize rustless steel at a temperature of being somebody's turn to do
The easily solid solution diffusion such as band internal grain atom C, N, interior tissue produces minor variations, mainly horse
Family name's body is changed into austenite, and distortional stress is released, and reaches destressing effect.If this temperature is too low,
Then Stress Release is slow, and drawing effect is poor；If this temperature is too high, then Stress Release is effective, but machine
Tool performance, mainly intensity and hardness reduce.Below 500 DEG C, the improvement to template is the least, though single
Position tension force is 30kg/mm2, process front wave 2.5mm, processing back wave is 2.3mm, and processes front phase
Ratio is almost without change.Although template improves when processing for 850 DEG C, but mechanical performance drastically declines.
Such as, 304 stainless steel bands that thickness is 0.2mm, hardness is HV420, when in stress relief annealing stove
Speed when being 10mpm, hardness drops to HV380, it is impossible to keep the stability of its performance, but should
Hot-drawn rectify stress relief annealing process temperature below 800 DEG C time hardness can maintain HV410, base
This keeps the stability of its performance, concordance.Therefore this hot-drawn is selected to rectify the temperature that stress relief annealing processes
Degree is 500～800 DEG C, can keep stablizing of steel band performance.
Preferably, carrying out hot-air seasoning process after step S3 and step S5, the temperature of hot blast is 100-120
DEG C, steel belt operating speed is 15～30mpm.
Embodiment 1
Selecting 301 stainless steel bands, width is 600mm, and hardness is HV510-540.
The concrete technology step of this embodiment is as follows:
(1) get the raw materials ready
The 301 austenitic stainless steel cold-rolled strips selecting thickness to be 0.6mm prepare rolling.
(2) semi-finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 1500KN and the rolling tensile force of 200KN,
With the mill speed of 150mpm, the stainless steel cold-rolled steel band blank that 0.6mm is thick is rolled into thickness is
The semi-finished product stainless steel band of 0.15mm, the thickness deviation of this semi-finished product stainless steel band is ± 0.005mm.
(3) semi-finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, semi-finished product stainless steel band is carried out, removes semi-finished product not
The oils and fats of rust steel strip surface.In the present embodiment, degreasing agent is alkaline defatting agent, the master of this alkaline defatting agent
Wanting composition is KOH.
(4) solution treatment
Semi-finished product stainless steel band is passed through bright annealing furnace, light with the speed of 26mpm in protective gas
Heating-up temperature in annealing furnace is 1120 DEG C, the tapping temperature of semi-finished product stainless steel band control 60 DEG C with
Under.This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.
(5) finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 2000KN and the rolling tensile force of 100KN,
With the mill speed of 150mpm, the semi-finished product rolling stainless steel band through solution treatment become thickness be
The finished product stainless steel band of 0.06mm, the thickness deviation of this finished product stainless steel band is ± 0.003mm.This finished product
The working modulus of stainless steel band is 60%.Finished product rolling uses bicone intermediate calender rolls, and after rolling, template limit wave is high
Degree is less than 3% less than 3mm, chilled box.
(6) finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, finished product stainless steel band is carried out, removes finished product rustless steel
The oils and fats of belt surface.In the present embodiment, degreasing agent is alkaline defatting agent, the main one-tenth of this alkaline defatting agent
Dividing is KOH.
(7) stress relief annealing process is rectified in hot-drawn
Finished product steel belt after defat is equipped with at an entrance and exit tension level(l)ing device go should
Power annealing furnace carries out eliminating stress in protective gas and processes, to eliminate the stress within finished product steel belt, with
Shi Liyong hightension carries out template tension straingtening.It is 680 DEG C that the temperature of stress relief annealing process is rectified in hot-drawn.
This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.Obtained by this step
Good, the stainless steel band of stress relieving to template, steel band tension force in stove is 10KN, and unit tension is
27.78kg/mm2, speed 25mpm.
Using cold rolling hard state 301 stainless steel band that above-mentioned production technology obtains, the key technical indexes is: limit
Wave is less than 1mm, middle wave less than 0.5mm, and hardness is HV510-530, resisting of steel band vertical and horizontal
Tensile strength, yield strength ratio all within 100 ± 5%.
Embodiment 2
Selecting 301 stainless steel bands, width is 600mm, hardness HV500-530.
The present invention uses following processing step
(1) get the raw materials ready
The 301 austenitic stainless steel cold-rolled strips selecting thickness to be 1.5mm prepare rolling.
(2) semi-finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 2500KN and the rolling tensile force of 100KN,
With the mill speed of 100mpm, the stainless steel cold-rolled steel band blank that 1.5mm is thick is rolled into thickness is
The semi-finished product stainless steel band of 0.48mm, the thickness deviation of this semi-finished product stainless steel band is ± 0.006mm.
(3) semi-finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, semi-finished product stainless steel band is carried out, removes finished product stainless
The oils and fats of steel strip surface.In the present embodiment, degreasing agent is alkaline defatting agent, this alkaline defatting agent main
Composition is KOH.
(4) solution treatment
Semi-finished product stainless steel band is passed through bright annealing furnace, light with the speed of 15mpm in protective gas
Heating-up temperature in annealing furnace is 1140 DEG C, the tapping temperature of semi-finished product stainless steel band control 60 DEG C with
Under.This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.
(5) finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 1000KN and the rolling tensile force of 50KN,
With the mill speed of 100mpm, the semi-finished product rolling stainless steel band through solution treatment become thickness be
The finished product stainless steel band of 0.2mm, the thickness deviation of this finished product stainless steel band is ± 0.005mm.This finished product
The working modulus of stainless steel band is 58.33%.Finished product rolling uses bicone intermediate calender rolls, template limit wave after rolling
Highly less than 3mm, chilled box is less than 3%.
(6) finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, finished product stainless steel band is carried out, removes finished product rustless steel
The oils and fats of belt surface.In the present embodiment, degreasing agent is alkaline defatting agent, the main one-tenth of this alkaline defatting agent
Dividing is KOH.
(7) stress relief annealing process is rectified in hot-drawn
Finished product steel belt after defat is equipped with at an entrance and exit tension level(l)ing device go should
Power annealing furnace carries out eliminating stress in protective gas and processes, to eliminate the stress within finished product steel belt, with
Shi Liyong hightension carries out template tension straingtening.It is 750 DEG C that the temperature of stress relief annealing process is rectified in hot-drawn.
This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.Obtained by this step
Good, the stainless steel band of stress relieving to template, steel band tension force in stove is 40KN, and unit tension is
33.33kg/mm2, speed is 20mpm.
Using cold rolling hard state 301 stainless steel band that above-mentioned production technology obtains, the key technical indexes is: limit
Wave is less than 1.5mm, middle wave less than 0.7mm, and hardness is HV510-530, steel band vertical and horizontal
Tensile strength, yield strength ratio all within 100 ± 8%.
Embodiment 3
Selecting 301 stainless steel bands, width is 600mm, and hardness is HV510-540.
The concrete technology step of this embodiment is as follows:
(1) get the raw materials ready
The 301 austenitic stainless steel cold-rolled strips selecting thickness to be 0.8mm prepare rolling.
(2) semi-finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 3000KN and the rolling tensile force of 150KN,
With the mill speed of 300mpm, the stainless steel cold-rolled steel band blank of 0.8mm is rolled into thickness is
The semi-finished product stainless steel band of 0.15mm, the thickness deviation of this semi-finished product stainless steel band is ± 0.01mm.
(3) semi-finished product stainless steel band ungrease treatment
With the alkaline defatting agent that temperature is 60～80 DEG C, semi-finished product stainless steel band is carried out, removes half and become
The oils and fats of product stainless steel band surface.In the present embodiment, degreasing agent is alkaline defatting agent, this alkaline defatting agent
Main component be KOH.
(4) solution treatment
Semi-finished product stainless steel band is passed through bright annealing furnace, light with the speed of 30mpm in protective gas
Heating-up temperature in annealing furnace is 1020 DEG C, the tapping temperature of semi-finished product stainless steel band control 60 DEG C with
Under.This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.
(5) finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 2500KN and the rolling tensile force of 120KN,
With the mill speed of 400mpm, the semi-finished product rolling stainless steel band through solution treatment become thickness be
The finished product stainless steel band of 0.05mm, the thickness deviation of this finished product stainless steel band is ± 0.008mm.This finished product
The working modulus of stainless steel band is 66.66%.Finished product rolling uses bicone intermediate calender rolls, template limit wave after rolling
Highly less than 3mm, chilled box is less than 3%.
(6) finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, finished product stainless steel band is carried out, removes finished product rustless steel
The oils and fats of belt surface.In the present embodiment, degreasing agent is alkaline defatting agent, the main one-tenth of this alkaline defatting agent
Dividing is KOH.
(7) stress relief annealing process is rectified in hot-drawn
Finished product steel belt after defat is equipped with at an entrance and exit tension level(l)ing device go should
Power annealing furnace carries out eliminating stress in protective gas and processes, to eliminate the stress within finished product steel belt, with
Shi Liyong hightension carries out template tension straingtening.It is 500 DEG C that the temperature of stress relief annealing process is rectified in hot-drawn.
Protective gas is pure hydrogen gas.Obtained by this step that template is good, the stainless steel band of stress relieving, steel
Band tension force in stove is 10KN, and unit tension is 33.33kg/mm2, speed 30mpm.
Using cold rolling hard state 301 stainless steel band that above-mentioned production technology obtains, the key technical indexes is: limit
Wave is less than 1mm, middle wave less than 0.5mm, and hardness is HV520-550, resisting of steel band vertical and horizontal
Tensile strength, yield strength ratio all within 100 ± 5%.
Embodiment 4
Selecting 301 stainless steel bands, width is 600mm, hardness HV400-450.
The present invention uses following processing step
(1) get the raw materials ready
The 301 austenitic stainless steel cold-rolled strips selecting thickness to be 1.5mm prepare rolling.
(2) semi-finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 2000KN and the rolling tensile force of 100KN,
With the mill speed of 100mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into thickness is
The semi-finished product stainless steel band of 0.75mm, the thickness deviation of this semi-finished product stainless steel band is ± 0.007mm.
(3) semi-finished product stainless steel band ungrease treatment
With the alkaline defatting agent that temperature is 60～80 DEG C, semi-finished product stainless steel band is carried out, removes finished product
The oils and fats of stainless steel band surface.In the present embodiment, degreasing agent is alkaline defatting agent, this alkaline defatting agent
Main component is KOH.
Carrying out hot-air seasoning process after semi-finished product stainless steel band ungrease treatment, the temperature of hot blast is 100-120
DEG C, steel belt operating speed is 15～30 ms/min.
(4) solution treatment
Semi-finished product stainless steel band is passed through bright annealing furnace, light with the speed of 9mpm in protective gas
Heating-up temperature in annealing furnace is 1145 DEG C, the tapping temperature of semi-finished product stainless steel band control 60 DEG C with
Under.This protective gas be volume content be the N of 25%2With 75% H2Mixed gas.
(5) finished product rolling
Use 20 roller precision cold-rolled units, under the roll-force of 1000KN and the rolling tensile force of 50KN,
With the mill speed of 100mpm, the semi-finished product rolling stainless steel band through solution treatment become thickness be
The finished product stainless steel band of 0.5mm, the thickness deviation of this finished product stainless steel band is ± 0.005mm.This finished product
The working modulus of stainless steel band is 33.33%.Finished product rolling uses bicone intermediate calender rolls, template limit wave after rolling
Highly less than 3mm, chilled box is less than 3%.
Carrying out hot-air seasoning process after finished product rolls, the temperature of hot blast is 100-120 DEG C, and steel band runs speed
Degree is 15～30 ms/min.
(6) finished product stainless steel band ungrease treatment
With the degreasing agent that temperature is 60～80 DEG C, finished product stainless steel band is carried out, removes finished product rustless steel
The oils and fats of belt surface.In the present embodiment, degreasing agent is alkaline defatting agent, the main one-tenth of this alkaline defatting agent
Dividing is KOH.
(7) stress relief annealing process is rectified in hot-drawn
Finished product steel belt after defat is equipped with at an entrance and exit tension level(l)ing device go should
Power annealing furnace carries out eliminating stress in protective gas and processes, to eliminate the stress within finished product steel belt, with
Shi Liyong hightension carries out template tension straingtening.It is 800 DEG C that the temperature of stress relief annealing process is rectified in hot-drawn.
Protective gas is pure nitrogen gas.Obtained by this step that template is good, the stainless steel band of stress relieving, steel
Band tension force in stove is 50KN, and unit tension is 16.67kg/mm2, speed is 4mpm.
Using cold rolling hard state 301 stainless steel band that above-mentioned production technology obtains, the key technical indexes is: limit
Wave is less than 1.5mm, middle wave less than 0.7mm, and hardness is HV410-450, steel band vertical and horizontal
Tensile strength, yield strength ratio all within 100 ± 4%.
Claims (9)
1. the production technology of a cold rolling hard state stainless steel band, it is characterised in that include hot-drawn
Rectifying stress relief annealing to process, this process includes:
In stress annealing stove, finished product stainless steel band aligned in protective gas and make annealing treatment,
Obtain described cold rolling hard state stainless steel band；
It is 680～800 DEG C that the temperature of stress relief annealing process is rectified in described hot-drawn, described finished product
Stainless steel band tension force in described stress relief annealing stove is 10～50KN, and unit tension is
16-34kg/mm2, speed is 4 ms/min～30 ms/min, and described hot-drawn is rectified and eliminated stress
The protective gas of annealing is nitrogen hydrogen mixeding gas, pure hydrogen gas or pure nitrogen gas；Described
Nitrogen hydrogen mixeding gas be volume content be 25% nitrogen and volume content be the hydrogen of 75%.
2. the production technology of cold rolling hard state stainless steel band as claimed in claim 1, its feature
It is: the porch of described stress relief annealing stove and exit are provided with the described finished product of control not
The tension level(l)ing device of the template of rust steel band.
3. the production technology of cold rolling hard state stainless steel band as claimed in claim 1, its feature
Being, described hot-drawn is rectified before stress relief annealing processes and is also included:
Get the raw materials ready: stainless steel cold-rolled steel band welding band-leading is obtained stainless steel cold-rolled steel band blank；
Semi-finished product roll: roll described stainless steel cold-rolled steel band blank for semi-finished product stainless steel band；
Semi-finished product stainless steel band ungrease treatment: described semi-finished product stainless steel band is carried out, removes
Remove the oils and fats of described semi-finished product stainless steel band surface；
Solution treatment: by described semi-finished product stainless steel band light continuous heat in protective gas；
Finished product rolls: be finished product stainless steel band by described semi-finished product rolling stainless steel band；
Finished product stainless steel band ungrease treatment: be carried out described finished product stainless steel band, removes institute
State the oils and fats of finished product stainless steel band surface.
4. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
It is: also include, divides after described semi-finished product stainless steel band ungrease treatment and described finished product roll
Not carrying out hot-air seasoning process, the temperature of hot blast is 100-120 DEG C, steel belt operating speed be 15～
30 ms/min.
5. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
Be: described in the get the raw materials ready thickness of the described stainless steel cold-rolled steel band obtained be 0.6～1.5mm.
6. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
It is: the equipment that the rolling of described semi-finished product uses is 20 roller precision cold-rolled units；
The roll-force used in the described semi-finished product operation of rolling is 1500～3000KN, rolling
Power is 100～200KN, and mill speed is 100～300mpm, described semi-finished product stainless steel band
Thickness be 0.15～0.75mm.
7. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
It is: described semi-finished product stainless steel band ungrease treatment and described finished product stainless steel band ungrease treatment
Temperature is 60～80 DEG C.
8. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
It is: the equipment that described solution treatment uses is bright continuous annealing furnace, and described semi-finished product are stainless
Steel band is 9～30mpm by the speed of described bright continuous annealing furnace, described solution treatment
Heating-up temperature is 1020～1145 DEG C, and the tapping temperature of described solution treatment is less than 60 DEG C,
The protective gas of described solution treatment is that volume content is 25% nitrogen and volume content is 75%
Hydrogen composition mixed gas.
9. the production technology of cold rolling hard state stainless steel band as claimed in claim 3, its feature
It is: the equipment that the rolling of described finished product uses is 20 roller precision cold-rolled units, and described finished product rolls
System uses bicone intermediate calender rolls, and the roll-force of described finished product rolling is 1000～2500KN, rolls
Tension force processed is 50～120KN, and mill speed is 100-400mpm, described finished product stainless steel band
Thickness be 0.05～0.5mm, after the rolling of described finished product, template limit wave height is less than 3mm, anxious
High degree is less than 3%.
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