CN103468911A - Production process of austenite stainless steel belt - Google Patents
Production process of austenite stainless steel belt Download PDFInfo
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- CN103468911A CN103468911A CN2013104135041A CN201310413504A CN103468911A CN 103468911 A CN103468911 A CN 103468911A CN 2013104135041 A CN2013104135041 A CN 2013104135041A CN 201310413504 A CN201310413504 A CN 201310413504A CN 103468911 A CN103468911 A CN 103468911A
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Abstract
The invention discloses a production process of an austenite stainless steel belt. The production process comprises the following steps of: pre-processing non-magnetic austenite stainless steel to obtain a finished product steel belt, wherein MD (Martensite Point) (30/50) of the austenite stainless steel is not less than 40; annealing the finished product steel belt into a stress-relieving continuous type annealing furnace which has tension devices at both an inlet and an outlet; charging a protective gas into the annealing furnace to obtain the austenite stainless steel belt, wherein the annealing conditions are that the tension is 10 KN-20 KN, the speed is 5-15 meters/minute. The production process disclosed by the invention has a simple thermal treatment process, low time consumption (only 3 minutes-5 minutes) and high production efficiency.
Description
Technical field
The present invention relates to the production technique of Stainless Steel Band, particularly relate to a kind of production technique with austenic stainless steel belt of strong magnetic.
Background technology
Surface installation technique (or surface mounting technology) (Surface Mounted Technology, SMT), most popular a kind of technology and technique in current Electronic Assemblies industry, SMT substrate used thereof material great majority are stainless steel, thickness is between 0.1mm～0.5mm, wherein 301 steel grade specification requirements must be strong magnetic, and the remanent magnetism rate requires more than 8.0, and magnetic is more high better.
The production technique that has at present the Stainless Steel Band of strong magnetic is by being incubated 0.5～2 hour to improve the magnetic of Stainless Steel Band in 300～400 ℃ of environment.But this process heat treatment time is longer, efficiency is low and Stainless Steel Band Internal and external cycle remanent magnetism rate that produce is inhomogeneous, before the various performances such as wear resistance, elasticity, toughness and processing, differs larger.
Summary of the invention
The production technique that the purpose of this invention is to provide a kind of austenic stainless steel belt, to solve existing technique length consuming time, the problem of the Stainless Steel Band poor performance of production.
Technical scheme is as follows:
A kind of production technique of austenic stainless steel belt, comprise the following steps, and will, without magnetic austenitic stainless steel after preprocessing, obtain finished product steel belt; The MD(30/50 of described austenitic stainless steel) >=40; Described finished product steel belt is put into to the destressing continuous annealing furnace that the entrance and exit place is equipped with tension device anneals; fill shielding gas in described annealing furnace; annealing conditions: tension force is 10～20KN, and speed is 5 m/mins～15 m/mins, obtains described austenic stainless steel belt.
Further: annealing temperature is 400～600 ℃.
Further: described annealing temperature is 500 ℃, and described tension force is 15KN, and described speed is 10 m/mins.
Further: described preprocessing comprises: adopt the first cold rolling unit, under the rolling tensile force of the rolling load of 1000～2500KN and 100～200KN, with the roll speed of 100～200 m/mins, the described of 0.6～1.5mm is rolled into to the work in-process Stainless Steel Band that thickness is 0.2～0.7mm without magnetic austenitic stainless steel.
Further: after obtaining described work in-process Stainless Steel Band; described preprocessing also comprises: fill shielding gas in continuous bright annealing furnace; make described work in-process Stainless Steel Band carry out solution treatment with the speed of 10～25 m/mins by described continuous bright annealing furnace; Heating temperature is 1020～1145 ℃, and tapping temperature is below 60 ℃.
Further: after described solution treatment, described preprocessing also comprises: adopt the second cold rolling unit, under the rolling tensile force of the rolling load of 1000～2300KN and 50～120KN, roll speed with 60～120 m/mins, work in-process rolling stainless steel band after solution treatment is become to the hardening stainless steel band that thickness is 0.05～0.5mm, and the working modulus of described hardening stainless steel band is more than 50%.
Further: after obtaining described hardening stainless steel band, described preprocessing also comprises: the grease-removing agent that is 60～80 ℃ by temperature carries out skimming treatment to described hardening stainless steel band; Described hardening stainless steel band with stretching straightener after to skimming treatment carries out leveling, obtains the finished product steel belt that planeness is less than 1.0mm.
Further: described shielding gas is decomposed ammonia body or pure nitrogen gas, and described decomposed ammonia body comprises that volume content is 25%N
2and 75%H
2.
The invention has the beneficial effects as follows:
1, the thermal treatment process of austenic stainless steel belt of the present invention is simple, and spent time is short, only needs 3～5 minutes, and production efficiency is high.
2, the austenic stainless steel belt surface quality that the present invention produces is good, and remanent magnetism rate, thickness, precision and planeness are all higher, and can keep the various performances such as the front wear resistance of processing, elasticity, toughness constant.
3, the present invention adopts and obtain the sclerosis steel band with ideal grade without magnetic austenitic stainless steel after cold rolling, and it has certain magnetic, and the remanent magnetism rate is substantially below 5; In rear employing, the mode of low temperature continuous annealing, heat-treat, and improves intensity and remanent magnetism rate, and prevented the situation of traditional technology Internal and external cycle remanent magnetism rate inequality; Employing can maintain good template than hightension, has avoided the recovery of steel band template to cold rolling template; Therefore, adopt technique of the present invention, can, increase the ferromagnetic good template that obtains simultaneously, improve production efficiency and quality product simultaneously.
Embodiment
Better understand the present invention for the ease of those skilled in the art, below in conjunction with specific embodiment, the present invention is described in further details.
Principle of the present invention: austenitic stainless steel is the unstable austenite of generating portion in the work hardening process, under than hightension and lesser temps, heat, unstable austenitic transformation is become to martensite, improve stainless magnetic and intensity by the cooperation of controlling temperature, speed and tension force, and keep the various performances such as the front wear resistance of thermal treatment, toughness constant.
Raw materials usedly in the embodiment of the present invention be: thickness is 0.6～1.5mm, MD(30/50) >=40 without magnetic austenitic stainless steel, this is commercially available stainless steel after solution treatment without magnetic austenitic stainless steel.MD(30/50 wherein) refer to that metal generates 50% martensitic temperature after 30% cold deformation.MD(30/50) larger, stainless steel generation martensite ability is stronger, and magnetic is higher, otherwise magnetic is lower.
In embodiment, shielding gas is that volume content is 25%N
2and 75%H
2decomposed ammonia or pure nitrogen gas.
In embodiment, skimming treatment grease-removing agent used is this area common grease-removing agent commonly used, and its main component is KOH.
The tension device that in embodiment, tension device is this area 2 rollers commonly used or 4 rollers, provide power with motor, respectively is provided with one group at the entrance and exit place of destressing continuous annealing furnace, in order to guarantee the template quality of Stainless Steel Band.The preferred tension device of 4 rollers.
Embodiment 1
Selecting thickness is 0.6mm, MD(30/50) be 40 without magnetic austenitic stainless steel, after the conventional preprocessings such as work in-process rolling, solution treatment, finished product rolling, skimming treatment, tension leveling processing, obtain the finished product steel belt that thickness is 0.2mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with to tension device through an entrance and exit place carries out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 400 ℃, presses tension force 10KN, and the condition of speed 5 m/mins (meters per minute, mpm) is put into the destressing continuous annealing furnace, obtains strong magnetic austenitic stainless steel band.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness is 0.2mm, and width is 600mm, thickness deviation: ± 0.005mm; Hardness is HV510-540, remanent magnetism rate 9.52.
Embodiment 2
Selecting thickness is 1.5mm, MD(30/50) be 50 without magnetic austenitic stainless steel, after the conventional preprocessings such as work in-process rolling, solution treatment, finished product rolling, skimming treatment, tension leveling processing, obtain the finished product steel belt that thickness is 0.3mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with to tension device through an entrance and exit place carries out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 600 ℃, presses tension force 20KN, and the condition of speed 15mpm is put into the destressing continuous annealing furnace, obtains strong magnetic austenitic stainless steel band.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness is 0.3mm, and width is 600mm, thickness deviation: ± 0.007mm; Hardness is HV530-550, remanent magnetism rate 9.8.
Embodiment 3
Selecting thickness is 1.0mm, MD(30/50) be 55 without magnetic austenitic stainless steel, after the conventional preprocessings such as work in-process rolling, solution treatment, finished product rolling, skimming treatment, tension leveling processing, obtain the finished product steel belt that thickness is 0.05mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with to tension device through an entrance and exit place carries out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 500 ℃, presses tension force 15KN, and the condition of speed 10mpm is put into the destressing continuous annealing furnace, obtains austenic stainless steel belt.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness is 0.05mm, and width is 600mm, thickness deviation: ± 0.002mm; Hardness is HV530-560, remanent magnetism rate 9.8.
Embodiment 4
Customer requirement austenic stainless steel belt thickness is 0.2mm, and width is 600mm, hardness HV500-530.
The present embodiment adopts following processing step:
(1) get the raw materials ready
Selecting thickness is 1.5mm, MD(30/50) be 42 without magnetic austenitic stainless steel, prepare rolling after welding band-leading.
(2) work in-process rolling
Adopt the first cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 2500KN and 100KN, roll speed with 180mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into to the work in-process Stainless Steel Band that thickness is 0.45mm, and the thickness deviation of this work in-process Stainless Steel Band is ± 0.01mm.
(3) solution treatment
Make the work in-process Stainless Steel Band pass through continuous bright annealing furnace with the speed of 15mpm; continuous bright annealing furnace be heated to be 1120 ℃; and the work in-process Stainless Steel Band in continuous bright annealing furnace is filled to shielding gas, the tapping temperature of work in-process Stainless Steel Band is controlled at below 60 ℃.
(4) finished product rolling
Adopt the second cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 1000KN and 100KN, roll speed with 120mpm, to become the hardening stainless steel band that thickness is 0.2mm through the work in-process rolling stainless steel band of solution treatment, the working modulus of this hardening stainless steel band is 55.56%.Wherein, working modulus=(raw thickness-finished product thickness)/raw thickness * 100%.
(5) skimming treatment
The grease-removing agent that is 60 ℃ by temperature is cleaned the hardening stainless steel band, removes the grease of hardening stainless steel belt surface.
(6) tension leveling is processed
With stretching straightener, the hardening stainless steel band through skimming treatment is carried out to leveling, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing is processed
The temperature that finished product steel belt is equipped with to tension device through an entrance and exit place is that 400 ℃ of destressing continuous annealing furnaces carry out subzero treatment; to increase steel band intensity and remanent magnetism rate; continuous annealing furnace is filled to shielding gas simultaneously; put into the destressing continuous annealing furnace by tension force at 12KN, speed 5mpm, obtain required austenic stainless steel belt.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness deviation: ± 0.005mm; Hardness is HV510-530, remanent magnetism rate 9.2.
Embodiment 5
Customer requirement austenic stainless steel belt thickness is 0.3mm, and width is 600mm, hardness HV520-550.
The present embodiment adopts following processing step:
(1) get the raw materials ready
Selecting thickness is 1.5mm, MD(30/50) be 50 without magnetic austenitic stainless steel, prepare rolling after welding band-leading.
(2) work in-process rolling
Adopt the first cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 1500KN and 200KN, roll speed with 100mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into to the work in-process Stainless Steel Band that thickness is 0.75mm, and the thickness deviation of this work in-process Stainless Steel Band is ± 0.015mm.
(3) solution treatment
Make the work in-process Stainless Steel Band pass through continuous bright annealing furnace with the speed of 8mpm, continuous bright annealing furnace be heated to be 1020 ℃, and, to the work in-process Stainless Steel Band inflated with nitrogen in continuous bright annealing furnace, the tapping temperature of work in-process Stainless Steel Band is controlled at below 60 ℃.
(4) finished product rolling
Adopt the second cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 2000KN and 50KN, roll speed with 60mpm, to become the hardening stainless steel band that thickness is 0.3mm through the work in-process rolling stainless steel band of solution treatment, the working modulus of this hardening stainless steel band is 60%.
(5) skimming treatment
The grease-removing agent that is 80 ℃ by temperature is cleaned the hardening stainless steel band, removes the grease of hardening stainless steel belt surface.
(6) tension leveling is processed
With stretching straightener, the hardening stainless steel band through skimming treatment is carried out to leveling, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing is processed
The temperature that finished product steel belt is equipped with to tension device through an entrance and exit place is that 500 ℃ of destressing continuous annealing furnaces carry out subzero treatment, to increase steel band intensity and remanent magnetism rate, simultaneously to the continuous annealing furnace inflated with nitrogen, put into the destressing continuous annealing furnace by tension force at 20KN, speed 15mpm, obtain required austenic stainless steel belt.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness deviation: ± 0.007mm; Hardness is HV530-550, remanent magnetism rate 9.8.
Embodiment 6
The present embodiment adopts following processing step:
(1) get the raw materials ready
Selecting thickness is 1.5mm, MD(30/50) be 48 without magnetic austenitic stainless steel, prepare rolling after welding band-leading.
(2) work in-process rolling
Adopt the first cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 1000KN and 160KN, roll speed with 200mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into to the work in-process Stainless Steel Band that thickness is 0.75mm, and the thickness deviation of this work in-process Stainless Steel Band is ± 0.015mm.
(3) solution treatment
Make the work in-process Stainless Steel Band pass through continuous bright annealing furnace with the speed of 25mpm, continuous bright annealing furnace be heated to be 1145 ℃, and, to the work in-process Stainless Steel Band inflated with nitrogen in continuous bright annealing furnace, the tapping temperature of work in-process Stainless Steel Band is controlled at below 60 ℃.
(4) finished product rolling
Adopt the second cold rolling unit, be 20 roller precision cold-rolled units, under the rolling tensile force of the rolling load of 2300KN and 120KN, roll speed with 80mpm, to become the hardening stainless steel band that thickness is 0.3mm through the work in-process rolling stainless steel band of solution treatment, the working modulus of this hardening stainless steel band is 60%.
(5) skimming treatment
The grease-removing agent that is 70 ℃ by temperature is cleaned the hardening stainless steel band, removes the grease of hardening stainless steel belt surface.
(6) tension leveling is processed
With stretching straightener, the hardening stainless steel band through skimming treatment is carried out to leveling, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing is processed
The temperature that finished product steel belt is equipped with to tension device through an entrance and exit place is that 600 ℃ of destressing continuous annealing furnaces carry out subzero treatment, to increase steel band intensity and remanent magnetism rate, simultaneously to the continuous annealing furnace inflated with nitrogen, put into the destressing continuous annealing furnace by tension force at 15KN, speed 8mpm, obtain required austenic stainless steel belt.
Adopt the product of above-mentioned explained hereafter, the key technical indexes can reach: thickness deviation: ± 0.007mm; Hardness is HV530-550, remanent magnetism rate 9.8.
Claims (8)
1. the production technique of an austenic stainless steel belt, comprise the following steps, and will without magnetic austenitic stainless steel after preprocessing, obtain finished product steel belt, it is characterized in that,
The MD(30/50 of described austenitic stainless steel) >=40;
Described finished product steel belt is put into to the destressing continuous annealing furnace that the entrance and exit place is equipped with tension device anneals; fill shielding gas in described annealing furnace; annealing conditions: tension force is 10～20KN, and speed is 5 m/mins～15 m/mins, obtains described austenic stainless steel belt.
2. the production technique of austenic stainless steel belt as claimed in claim 1, is characterized in that, annealing temperature is 400～600 ℃.
3. the production technique of austenic stainless steel belt as claimed in claim 2, is characterized in that, described annealing temperature is 500 ℃, and described tension force is 15KN, and described speed is 10 m/mins.
4. the production technique of austenic stainless steel belt as claimed in claim 1 or 2, is characterized in that, described preprocessing comprises:
Adopt the first cold rolling unit, under the rolling tensile force of the rolling load of 1000～2500KN and 100～200KN, with the roll speed of 100～200 m/mins, the described of 0.6～1.5mm is rolled into to the work in-process Stainless Steel Band that thickness is 0.2～0.7mm without magnetic austenitic stainless steel.
5. the production technique of austenic stainless steel belt as claimed in claim 4, is characterized in that, after obtaining described work in-process Stainless Steel Band, described preprocessing also comprises:
Fill shielding gas in continuous bright annealing furnace, make described work in-process Stainless Steel Band carry out solution treatment with the speed of 10～25 m/mins by described continuous bright annealing furnace, Heating temperature is 1020～1145 ℃, and tapping temperature is below 60 ℃.
6. the production technique of austenic stainless steel belt as claimed in claim 5, is characterized in that, after described solution treatment, described preprocessing also comprises:
Adopt the second cold rolling unit, under the rolling tensile force of the rolling load of 1000～2300KN and 50～120KN, roll speed with 60～120 m/mins, work in-process rolling stainless steel band after solution treatment is become to the hardening stainless steel band that thickness is 0.05～0.5mm, and the working modulus of described hardening stainless steel band is more than 50%.
7. the production technique of austenic stainless steel belt as claimed in claim 6, is characterized in that, after obtaining described hardening stainless steel band, described preprocessing also comprises:
The grease-removing agent that is 60～80 ℃ by temperature carries out skimming treatment to described hardening stainless steel band;
Described hardening stainless steel band with stretching straightener after to skimming treatment carries out leveling, obtains the finished product steel belt that planeness is less than 1.0mm.
8. the production technique of austenic stainless steel belt as claimed in claim 1, is characterized in that, described shielding gas is decomposed ammonia body or pure nitrogen gas, and described decomposed ammonia body comprises that volume content is 25%N
2and 75%H
2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111203693A (en) * | 2020-01-20 | 2020-05-29 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN115161454A (en) * | 2022-07-20 | 2022-10-11 | 山西太钢不锈钢精密带钢有限公司 | Production method of hard austenitic stainless precision strip steel |
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| CN102489550A (en) * | 2012-01-04 | 2012-06-13 | 山东能源机械集团乾元不锈钢制造有限公司 | Production method for stainless steel belt for etching |
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| CN102492813A (en) * | 2012-01-04 | 2012-06-13 | 山东能源机械集团乾元不锈钢制造有限公司 | Production technology of stainless steel band for weaving reed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111203693A (en) * | 2020-01-20 | 2020-05-29 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN111203693B (en) * | 2020-01-20 | 2021-09-14 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN115161454A (en) * | 2022-07-20 | 2022-10-11 | 山西太钢不锈钢精密带钢有限公司 | Production method of hard austenitic stainless precision strip steel |
| CN115161454B (en) * | 2022-07-20 | 2023-07-21 | 山西太钢不锈钢精密带钢有限公司 | Production method of hard austenitic stainless precision belt steel |
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Address after: 271200 Shandong city of Xintai province Tai'an City Xindong town new road three Patentee after: Shandong Energy Group Qianyuan Stainless Steel Manufacturing Co., Ltd, Address before: Tai'an City, Shandong Province town of 271222 east of Xintai new road three Patentee before: Shandong Energy Machinery Group Qianyuan Stainless Steel Manufacturing Co., Ltd. |