CN103468911B - Production process of austenite stainless steel belt - Google Patents
Production process of austenite stainless steel belt Download PDFInfo
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- CN103468911B CN103468911B CN201310413504.1A CN201310413504A CN103468911B CN 103468911 B CN103468911 B CN 103468911B CN 201310413504 A CN201310413504 A CN 201310413504A CN 103468911 B CN103468911 B CN 103468911B
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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 the 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 remanent magnetism rate requires more than 8.0, and magnetic is more high better.
The production technique at present with 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 DEG C 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 is that produce is uneven, and the various performances such as wear resistance, elasticity, toughness differ larger with before processing.
Summary of the invention
The object of this invention is to provide a kind of production technique 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 production technique for austenic stainless steel belt, comprises the following steps, and without magnetic austenitic stainless steel after preprocessing, will obtain finished product steel belt; The MD(30/50 of described austenitic stainless steel) >=40; Described finished product steel belt is put into the destressing continuous annealing furnace that entrance and exit place is equipped with tension device to anneal; shielding gas is filled in described annealing furnace; annealing conditions: tension force is 10 ~ 20KN, speed is 5 ms/min ~ 15 ms/min, obtains described austenic stainless steel belt.
Further: annealing temperature is 400 ~ 600 DEG C.
Further: described annealing temperature is 500 DEG C, described tension force is 15KN, and described speed is 10 ms/min.
Further: described preprocessing comprises: to adopt the first cold mill complex, under the rolling load of 1000 ~ 2500KN and the rolling tensile force of 100 ~ 200KN, with the roll speed of 100 ~ 200 ms/min, the described of 0.6 ~ 1.5mm is rolled into without magnetic austenitic stainless steel the work in-process Stainless Steel Band that thickness is 0.2 ~ 0.7mm.
Further: after obtaining described work in-process Stainless Steel Band; described preprocessing also comprises: in continuous bright annealing furnace, fill shielding gas; described work in-process Stainless Steel Band is made to carry out solution treatment with the speed of 10 ~ 25 ms/min by described continuous bright annealing furnace; Heating temperature is 1020 ~ 1145 DEG C, and tapping temperature is below 60 DEG C.
Further: after described solution treatment, described preprocessing also comprises: adopt the second cold mill complex, under the rolling load of 1000 ~ 2300KN and the rolling tensile force of 50 ~ 120KN, with the roll speed of 60 ~ 120 ms/min, become by work in-process rolling stainless steel band after solution treatment thickness to be the hardening stainless steel band of 0.05 ~ 0.5mm, 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: to be that the grease-removing agent of 60 ~ 80 DEG C carries out skimming treatment to described hardening stainless steel band by temperature; With stretching straightener, leveling is carried out to the described hardening stainless steel band after skimming treatment, obtain the finished product steel belt that planeness is less than 1.0mm.
Further: described shielding gas is ammonolysis craft gas or pure nitrogen gas, it is 25%N that described ammonolysis craft gas comprises volume content
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, and only need 3 ~ 5 minutes, production efficiency is high.
2, the austenic stainless steel belt surface quality of the present invention's production is good, and remanent magnetism rate, thickness, precision and planeness are all higher, and the various performance such as wear resistance, elasticity, toughness before processing can be kept constant.
3, the present invention adopts and after cold rolling, obtains the hardenable strip steel with ideal grade without magnetic austenitic stainless steel, and it has certain magnetic, and remanent magnetism rate is substantially below 5; The mode of low temperature continuous annealing in rear employing, heat-treats, and improves intensity and remanent magnetism rate, and prevents the situation of traditional technology Internal and external cycle remanent magnetism rate inequality; Adopt comparatively hightension to maintain good template, avoid the recovery of steel band template to cold rolling template; Therefore, adopt technique of the present invention, ferromagneticly can obtain good template in increasing 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: the unstable austenite of austenitic stainless steel generating portion in work hardening process, heat under comparatively hightension and lesser temps, unstable austenitic transformation is become martensite, improve stainless magnetic and intensity by the cooperation of control temperature, speed and tension force, and keep the various performances such as the wear resistance before 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.Wherein MD(30/50) refer to that metal generates 50% martensitic temperature after the cold deformation of 30%.MD(30/50) larger, it is stronger that stainless steel produces martensite ability, and magnetic is higher, otherwise magnetic is lower.
In embodiment, shielding gas is volume content is 25%N
2and 75%H
2decomposed ammonia or pure nitrogen gas.
In embodiment, skimming treatment grease-removing agent used is that common grease-removing agent is commonly used in this area, and its main component is KOH.
In embodiment, tension device is the tension device that 2 rollers or 4 rollers are commonly used in this area, provides power with motor, is respectively provided with one group at the entrance and exit place of destressing continuous annealing furnace, in order to ensure the template quality of Stainless Steel Band.The preferably tension device of 4 rollers.
Embodiment 1
Select thickness to be 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 process, obtain the finished product steel belt that thickness is 0.2mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with tension device through an entrance and exit place is carried out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 400 DEG C, and by tension force 10KN, the condition of speed 5 ms/min (meters per minute, mpm) puts into 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
Select thickness to be 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 process, obtain the finished product steel belt that thickness is 0.3mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with tension device through an entrance and exit place is carried out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 600 DEG C, puts into destressing continuous annealing furnace by the condition of tension force 20KN, speed 15mpm, 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
Select thickness to be 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 process, obtain the finished product steel belt that thickness is 0.05mm.
The destressing continuous annealing furnace that finished product steel belt is equipped with tension device through an entrance and exit place is carried out subzero treatment, to increase steel band intensity and remanent magnetism rate.Fill shielding gas at continuous annealing furnace, temperature is 500 DEG C, puts into destressing continuous annealing furnace, obtain austenic stainless steel belt by the condition of tension force 15KN, speed 10mpm.
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
Select thickness to be 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 mill complex, be 20 roller precision cold-rolled units, under the rolling load of 2500KN and the rolling tensile force of 100KN, with the roll speed of 180mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into 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
Work in-process Stainless Steel Band is made to pass through continuous bright annealing furnace with the speed of 15mpm; continuous bright annealing furnace be heated to be 1120 DEG C; and shielding gas is filled to the work in-process Stainless Steel Band in continuous bright annealing furnace, the tapping temperature of work in-process Stainless Steel Band controls below 60 DEG C.
(4) finished product rolling
Adopt the second cold mill complex, be 20 roller precision cold-rolled units, under the rolling load of 1000KN and the rolling tensile force of 100KN, with the roll speed of 120mpm, become by work in-process rolling stainless steel band through solution treatment thickness to be the hardening stainless steel band of 0.2mm, 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
Be that the grease-removing agent of 60 DEG C cleans hardening stainless steel band by temperature, the grease of removing hardening stainless steel belt surface.
(6) tension leveling process
With stretching straightener, leveling is carried out to the hardening stainless steel band through skimming treatment, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing process
Temperature finished product steel belt being equipped with tension device through an entrance and exit place is that 400 DEG C of destressing continuous annealing furnaces carry out subzero treatment; to increase steel band intensity and remanent magnetism rate; shielding gas is filled to continuous annealing furnace simultaneously; put into 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
Select thickness to be 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 mill complex, be 20 roller precision cold-rolled units, under the rolling load of 1500KN and the rolling tensile force of 200KN, with the roll speed of 100mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into 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
Work in-process Stainless Steel Band is made to pass through continuous bright annealing furnace with the speed of 8mpm, continuous bright annealing furnace be heated to be 1020 DEG C, 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 controls below 60 DEG C.
(4) finished product rolling
Adopt the second cold mill complex, be 20 roller precision cold-rolled units, under the rolling load of 2000KN and the rolling tensile force of 50KN, with the roll speed of 60mpm, become by work in-process rolling stainless steel band through solution treatment thickness to be the hardening stainless steel band of 0.3mm, the working modulus of this hardening stainless steel band is 60%.
(5) skimming treatment
Be that the grease-removing agent of 80 DEG C cleans hardening stainless steel band by temperature, the grease of removing hardening stainless steel belt surface.
(6) tension leveling process
With stretching straightener, leveling is carried out to the hardening stainless steel band through skimming treatment, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing process
Temperature finished product steel belt being equipped with tension device through an entrance and exit place is that 500 DEG C of destressing continuous annealing furnaces carry out subzero treatment, to increase steel band intensity and remanent magnetism rate, simultaneously to continuous annealing furnace inflated with nitrogen, put into 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
Select thickness to be 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 mill complex, be 20 roller precision cold-rolled units, under the rolling load of 1000KN and the rolling tensile force of 160KN, with the roll speed of 200mpm, the stainless steel cold-rolled steel band blank of 1.5mm is rolled into 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
Work in-process Stainless Steel Band is made to pass through continuous bright annealing furnace with the speed of 25mpm, continuous bright annealing furnace be heated to be 1145 DEG C, 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 controls below 60 DEG C.
(4) finished product rolling
Adopt the second cold mill complex, be 20 roller precision cold-rolled units, under the rolling load of 2300KN and the rolling tensile force of 120KN, with the roll speed of 80mpm, become by work in-process rolling stainless steel band through solution treatment thickness to be the hardening stainless steel band of 0.3mm, the working modulus of this hardening stainless steel band is 60%.
(5) skimming treatment
Be that the grease-removing agent of 70 DEG C cleans hardening stainless steel band by temperature, the grease of removing hardening stainless steel belt surface.
(6) tension leveling process
With stretching straightener, leveling is carried out to the hardening stainless steel band through skimming treatment, obtain the finished product steel belt that planeness is less than 1.0mm.
(7) low-temperature annealing process
Temperature finished product steel belt being equipped with tension device through an entrance and exit place is that 600 DEG C of destressing continuous annealing furnaces carry out subzero treatment, to increase steel band intensity and remanent magnetism rate, simultaneously to continuous annealing furnace inflated with nitrogen, put into 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 (7)
1. a production technique for austenic stainless steel belt, comprises the following steps, and without magnetic austenitic stainless steel after preprocessing, will obtain finished product steel belt, it is characterized in that,
The MD (30/50) >=40 of described austenitic stainless steel;
Described finished product steel belt is put into the destressing continuous annealing furnace that entrance and exit place is equipped with tension device to anneal, in described annealing furnace, fill shielding gas, annealing conditions: tension force 12KN, speed 5 ms/min, obtains described austenic stainless steel belt; Or tension force 15KN, speed 8 ms/min, obtains described austenic stainless steel belt.
2. the production technique of austenic stainless steel belt as claimed in claim 1, it is characterized in that, annealing temperature is 400 ~ 600 DEG C.
3. the production technique of austenic stainless steel belt as claimed in claim 1 or 2, it is characterized in that, described preprocessing comprises:
Adopt the first cold mill complex, under the rolling load of 1000 ~ 2500KN and the rolling tensile force of 100 ~ 200KN, with the roll speed of 100 ~ 200 ms/min, the described of 0.6 ~ 1.5mm is rolled into without magnetic austenitic stainless steel the work in-process Stainless Steel Band that thickness is 0.2 ~ 0.7mm.
4. the production technique of austenic stainless steel belt as claimed in claim 3, it is characterized in that, after obtaining described work in-process Stainless Steel Band, described preprocessing also comprises:
In continuous bright annealing furnace, fill shielding gas, make described work in-process Stainless Steel Band carry out solution treatment with the speed of 10 ~ 25 ms/min by described continuous bright annealing furnace, Heating temperature is 1020 ~ 1145 DEG C, and tapping temperature is below 60 DEG C.
5. the production technique of austenic stainless steel belt as claimed in claim 4, it is characterized in that, after described solution treatment, described preprocessing also comprises:
Adopt the second cold mill complex, under the rolling load of 1000 ~ 2300KN and the rolling tensile force of 50 ~ 120KN, with the roll speed of 60 ~ 120 ms/min, become by work in-process rolling stainless steel band after solution treatment thickness to be the hardening stainless steel band of 0.05 ~ 0.5mm, the working modulus of described hardening stainless steel band is more than 50%.
6. the production technique of austenic stainless steel belt as claimed in claim 5, it is characterized in that, after obtaining described hardening stainless steel band, described preprocessing also comprises:
Be that the grease-removing agent of 60 ~ 80 DEG C carries out skimming treatment to described hardening stainless steel band by temperature;
With stretching straightener, leveling is carried out to the described hardening stainless steel band after skimming treatment, obtain the finished product steel belt that planeness is less than 1.0mm.
7. the production technique of austenic stainless steel belt as claimed in claim 1, it is characterized in that, described shielding gas is ammonolysis craft gas or pure nitrogen gas, and it is 25%N that described ammonolysis craft gas comprises volume content
2and 75%H
2.
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| 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 |
| 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 |
| CN115701840A (en) * | 2022-12-10 | 2023-02-14 | 南京鑫雯材料科技有限公司 | Production process of 201 stainless steel band for producing warm edge strips |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102719640A (en) * | 2012-07-10 | 2012-10-10 | 冶科金属有限公司 | Production method of stainless steel band used for internal round diamond blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102719640A (en) * | 2012-07-10 | 2012-10-10 | 冶科金属有限公司 | Production method of stainless steel band used for internal round diamond blade |
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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. |