CN106140812B - A kind of method of working hot-rolled strip - Google Patents
A kind of method of working hot-rolled strip Download PDFInfo
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- CN106140812B CN106140812B CN201610753612.7A CN201610753612A CN106140812B CN 106140812 B CN106140812 B CN 106140812B CN 201610753612 A CN201610753612 A CN 201610753612A CN 106140812 B CN106140812 B CN 106140812B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
Abstract
The present invention relates to a kind of methods of working hot-rolled strip, include the following steps：Choose the hot-rolled coil that the trade mark is BJS15C；First time longitudinal shearing slitting is carried out using the first big splitting production line, slitting roll bending is made；The slitting roll bending that first time longitudinal shearing slitting is obtained carries out pickling, and pickling roll bending is made；The pickling roll bending that pickling obtains is rolled, and rolling roll bending is made；Rolling rolling roll bending is subjected to spheroidizing, and spheroidizing roll bending is made；The spheroidizing roll bending that spheroidizing is obtained carries out finish rolling, and finish rolling roll bending is made；The finish rolling roll bending that finish rolling is obtained carries out second of longitudinal shearing slitting, and slitting roll bending is made；Packaging and storage.The beneficial effects of the invention are as follows：Can stabilized product quality, raise labour productivity.
Description
Technical field
The present invention relates to strip production and processing technical field more particularly to a kind of methods of working hot-rolled strip.
Background technology
It is well known that strip is a kind of narrow and long steel plate produced to adapt to different industrial departments needs.Strip
Coiled supply has many advantages, such as that dimensional accuracy is high, surface quality is good, easy to process, saving material, is widely used in production welding steel
Pipe, makees the fields such as the blank of cold-rolled forming section.
It is influenced by the method for current working hot-rolled strip, the strip quality produced is not sufficiently stable, and is being produced
Easily occur defective work in the process, causes entire production efficiency relatively low.
Invention content
Technical problem to be solved by the invention is to provide it is a kind of can stabilized product quality, raise labour productivity plus
The method of work hot-strip.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of method of working hot-rolled strip, including it is as follows
Step：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and pickling roll bending is made；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Secondly, annealing furnace annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 0.5h-3h after being warming up to 260 DEG C,
After keeping the temperature 0.5h-3h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1h-4h, and protected after being warming up to 400 DEG C
Annealing furnace is warming up to 580 DEG C by warm 1h-3h in 1h-4h again, after annealing furnace keeps the temperature 1h-3h at a temperature of 400 DEG C, and
Keep the temperature 0.5h-3h after being warming up to 580 DEG C, the 4th, after annealing furnace keeps the temperature 0.5h-3h at a temperature of 580 DEG C, annealing furnace is existed
It is warming up to 670 DEG C in 1h-4h, and keeps the temperature 0.5h-3h after being warming up to 670 DEG C, the 5th, annealing furnace protects at a temperature of 670 DEG C
After warm 0.5h-3h, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1h-4h, and kept the temperature after being warming up to 680 DEG C to 700 DEG C
8h-16h, the 6th, after annealing furnace keeps the temperature 8h-16h at a temperature of 680 DEG C to 700 DEG C, it will annealing by the way of furnace cooling
The temperature of stove is down to 600 DEG C by 680 DEG C to 700 DEG C, and the 7th, be down to the temperature of annealing furnace by the way of furnace cooling
After 600 DEG C, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, by annealing furnace
Temperature is down to 280 DEG C, and by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, and nodularization is made
Annealing roll bending；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
The beneficial effects of the invention are as follows：By to rolling roll bending carry out spheroidizing when, by entire spheroidizing process
Several stages are divided into, and effectively control heating-up time, soaking time and the temperature in each stage in each stage, to
So that the product quality produced is stablized, product qualification rate gets a promotion, to further improve labor productivity.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in the step 3, when carrying out pickling, the minus tolerance of the thickness before and after slitting roll bending pickling is less than
0.15mm, the quantity of descaling bath are two, and the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, two descaling baths
Pickling concentration is respectively 18%-22%, 15%-18%, and the sour position in two descaling baths is 380mm to 420mm, and acid liquor temperature is
53 DEG C to 72 DEG C, the pH value of neutralization chamber is 11 to 13, and the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51
DEG C, the cleaning speed of pickling lines is 5m/min to 15m/min.
It is using above-mentioned further advantageous effect：The oxidation that roll bending generates during soft annealing can be effectively removed
Skin avoids influencing following process.
Further, in the step 5, in spheroidizing, annealing furnace is warming up to 260 DEG C at full speed, and be warming up to
0.6h-1.4h is kept the temperature after 260 DEG C；After annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 260 DEG C, by annealing furnace in 1.2h-3.5h
400 DEG C are inside warming up to, and 1.2h-2.5h is kept the temperature after being warming up to 400 DEG C；Annealing furnace keeps the temperature 1.2h- at a temperature of 400 DEG C
After 2.5h, annealing furnace is warming up to 580 DEG C in 1.2h-3.5h, and 0.6h-1.4h is kept the temperature after being warming up to 580 DEG C；Annealing furnace
After keeping the temperature 0.6h-1.4h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 1.2h-3.5h, and be warming up to 670
0.6h-1.4h is kept the temperature after DEG C；After annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 670 DEG C, by annealing furnace in 1.2h-3.5h
680 DEG C to 700 DEG C are warming up to, and 9h-15h is kept the temperature after being warming up to 680 DEG C to 700 DEG C；Annealing furnace is at 680 DEG C to 700 DEG C
At a temperature of heat preservation 9h-15h after, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling.
Further, in spheroidizing, annealing furnace is warming up to 260 DEG C at full speed, and kept the temperature after being warming up to 260 DEG C
0.8h-1.2h；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 260 DEG C, annealing furnace is warming up to 400 in 1.6h-2.5h
DEG C, and keep the temperature 1.5h-2.2h after being warming up to 400 DEG C；After annealing furnace keeps the temperature 1.5h-2.2h at a temperature of 400 DEG C, it will anneal
Stove is warming up to 580 DEG C in 1.6h-2.5h, and keeps the temperature 0.8h-1.2h after being warming up to 580 DEG C；Temperature of the annealing furnace at 580 DEG C
After lower heat preservation 0.8h-1.2h, annealing furnace is warming up to 670 DEG C in 1.6h-2.5h, and 0.8h- is kept the temperature after being warming up to 670 DEG C
1.2h；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C extremely in 1.6h-2.5h
700 DEG C, and keep the temperature 11h-13h after being warming up to 680 DEG C to 700 DEG C；Annealing furnace is kept the temperature at a temperature of 680 DEG C to 700 DEG C
After 11h-13h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling.
Further, in spheroidizing, annealing furnace is warming up to 260 DEG C at full speed, and 1h is kept the temperature after being warming up to 260 DEG C；
After annealing furnace keeps the temperature 1h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 2h, and kept the temperature after being warming up to 400 DEG C
2h；After annealing furnace keeps the temperature 2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 2h, and after being warming up to 580 DEG C
Keep the temperature 1h；After annealing furnace keeps the temperature 1h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 2h, and be warming up to 670
1h is kept the temperature after DEG C；After annealing furnace keeps the temperature 1h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 DEG C in 2h, and
12h is kept the temperature after being warming up to 680 DEG C to 700 DEG C；After annealing furnace keeps the temperature 12h at a temperature of 680 DEG C to 700 DEG C, using with stove
The temperature of annealing furnace is down to 600 DEG C by cooling mode by 680 DEG C to 700 DEG C.
It further,, need to be first with metallographic microscope to the ball of spheroidizing roll bending before carrying out finish rolling in the step 6
Rate is detected, and the qualified annealing roll bending of detection is carried out finish rolling.
It further,, need to be first with universal testing machine and hardometer before carrying out second of longitudinal shearing slitting in the step 7
The hardness of finish rolling roll bending is detected, and acceptability limit Wei≤160HV of the hardness number of finish rolling roll bending.
Further, acceptability limit Wei≤140HV of the hardness number of finish rolling roll bending.
It is using above-mentioned further advantageous effect：The parameter in production technology can be adjusted in time according to detection data
Value, it is ensured that the quality of production.
Description of the drawings
Fig. 1 be working hot-rolled strip of the present invention method in spheroidizing curve graph.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment one：As shown in Figure 1, a kind of method of working hot-rolled strip, includes the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 0.5h after being warming up to 260 DEG C, and secondly, annealing furnace exists
After keeping the temperature 0.5h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1h, and 1h is kept the temperature after being warming up to 400 DEG C, then
After secondary, annealing furnace keeps the temperature 1h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 1h, and after being warming up to 580 DEG C
Keep the temperature 0.5h, the 4th, after annealing furnace keeps the temperature 0.5h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 1h, and
Keep the temperature 0.5h after being warming up to 670 DEG C, the 5th, after annealing furnace keeps the temperature 0.5h at a temperature of 670 DEG C, annealing furnace is heated up in 1h
To 680 DEG C to 700 DEG C, and 8h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, temperature of the annealing furnace at 680 DEG C to 700 DEG C
After lower heat preservation 8h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th, adopting
After the temperature of annealing furnace is down to 600 DEG C with the mode of furnace cooling, to annealing furnace change that cover is air-cooled, and by the temperature of annealing furnace
Degree is down to 280 DEG C by 600 DEG C, and the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace
80 DEG C are down to by 280 DEG C, finally, is come out of the stove, spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
Embodiment two：As shown in Figure 1, a kind of method of working hot-rolled strip, includes the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 0.8h after being warming up to 260 DEG C, and secondly, annealing furnace exists
After keeping the temperature 0.8h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1.6h, and kept the temperature after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 1.5h at a temperature of 400 DEG C, is warming up to 580 DEG C, and rising by 1.5h in 1.6h
Temperature is to keeping the temperature 0.8h after 580 DEG C, and the 4th, after annealing furnace keeps the temperature 0.8h at a temperature of 580 DEG C, annealing furnace is heated up in 1.6h
To 670 DEG C, and 0.8h is kept the temperature after being warming up to 670 DEG C, the 5th, after annealing furnace keeps the temperature 0.8h at a temperature of 670 DEG C, will anneal
Stove is warming up to 680 DEG C to 700 DEG C in 1.6h, and 11h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, and the 6th, annealing furnace is 680
DEG C to after keeping the temperature 11h at a temperature of 700 DEG C, the temperature of annealing furnace is down to by 680 DEG C to 700 DEG C by the way of furnace cooling
600 DEG C, the 7th, after the temperature of annealing furnace is down to 600 DEG C by the way of furnace cooling, annealing furnace is carried out to change cover wind
It is cold, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, using the side of water cooling
The temperature of annealing furnace is down to 80 DEG C by formula by 280 DEG C, finally, is come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
Embodiment three：As shown in Figure 1, a kind of method of working hot-rolled strip, includes the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 1.2h after being warming up to 260 DEG C, and secondly, annealing furnace exists
After keeping the temperature 1.2h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 2.5h, and kept the temperature after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 2.2h at a temperature of 400 DEG C, is warming up to 580 DEG C, and rising by 2.2h in 2.5h
Temperature is to keeping the temperature 1.2h after 580 DEG C, and the 4th, after annealing furnace keeps the temperature 1.2h at a temperature of 580 DEG C, annealing furnace is heated up in 2.5h
To 670 DEG C, and 1.2h is kept the temperature after being warming up to 670 DEG C, the 5th, after annealing furnace keeps the temperature 1.2h at a temperature of 670 DEG C, will anneal
Stove is warming up to 680 DEG C to 700 DEG C in 2.5h, and 13h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, and the 6th, annealing furnace is 680
DEG C to after keeping the temperature 13h at a temperature of 700 DEG C, the temperature of annealing furnace is down to by 680 DEG C to 700 DEG C by the way of furnace cooling
600 DEG C, the 7th, after the temperature of annealing furnace is down to 600 DEG C by the way of furnace cooling, annealing furnace is carried out to change cover wind
It is cold, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, using the side of water cooling
The temperature of annealing furnace is down to 80 DEG C by formula by 280 DEG C, finally, is come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
Example IV：As shown in Figure 1, a kind of method of working hot-rolled strip, includes the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 3h after being warming up to 260 DEG C, and secondly, annealing furnace is 260
After keeping the temperature 3h at a temperature of DEG C, annealing furnace is warming up to 400 DEG C, and keep the temperature 3h after being warming up to 400 DEG C in 4h, again, moved back
After stove keeps the temperature 3h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 4h, and kept the temperature after being warming up to 580 DEG C
3h, the 4th, after annealing furnace keeps the temperature 3h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 4h, and be warming up to 670
Keep the temperature 3h after DEG C, the 5th, after annealing furnace keeps the temperature 3h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 in 4h
DEG C, and 16h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, annealing furnace keep the temperature 16h at a temperature of 680 DEG C to 700 DEG C
Afterwards, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th, using with furnace cooling
After the temperature of annealing furnace is down to 600 DEG C by mode but, to annealing furnace change that cover is air-cooled, and by the temperature of annealing furnace by 600
DEG C it is down to 280 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace by 280 DEG C
80 DEG C are down to, finally, is come out of the stove, spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
Embodiment five：As shown in Figure 1, a kind of method of working hot-rolled strip, includes the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains is transported to pickling production by row device for hoisting
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: rolling, the pickling roll bending that pickling obtains being transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending be transported to by row device for hoisting in annealing furnace carrying out ball
Annealing is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 1h after being warming up to 260 DEG C, and secondly, annealing furnace is 260
After keeping the temperature 1h at a temperature of DEG C, annealing furnace is warming up to 400 DEG C, and keep the temperature 2h after being warming up to 400 DEG C in 2h, again, moved back
After stove keeps the temperature 2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 2h, and kept the temperature after being warming up to 580 DEG C
1h, the 4th, after annealing furnace keeps the temperature 1h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 2h, and be warming up to 670
Keep the temperature 1h after DEG C, the 5th, after annealing furnace keeps the temperature 1h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 in 2h
DEG C, and 12h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, annealing furnace keep the temperature 12h at a temperature of 680 DEG C to 700 DEG C
Afterwards, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th, using with furnace cooling
After the temperature of annealing furnace is down to 600 DEG C by mode but, to annealing furnace change that cover is air-cooled, and by the temperature of annealing furnace by 600
DEG C it is down to 280 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace by 280 DEG C
80 DEG C are down to, finally, is come out of the stove, spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains is transported to finish rolling production line by row device for hoisting
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packet
Dress.
In the present invention, it is preferred to which the technical solution of embodiment five is formulated specific according to the thickness of corresponding rolling roll bending
The operating process of spheroidizing, to effectively control the stability for the product quality produced and the performance of product, when
When the thickness of rolling roll bending changes, the operating process of spheroidizing is also required to change.
Before carrying out finish rolling, the Oxygen potential of spheroidizing roll bending need to be detected first with metallographic microscope, and will inspection
It surveys qualified annealing roll bending and carries out finish rolling.
Before carrying out second of longitudinal shearing slitting, the hardness of finish rolling roll bending need to be carried out first with universal testing machine and hardometer
Detection, and acceptability limit Wei≤140HV of the hardness number of finish rolling roll bending carry out finish rolling roll bending after hardness determination qualification
Metallographic detects, and wherein metallographic testing result information only refers to, and hardness qualification treats as metallographic qualification.
When carrying out second of longitudinal shearing slitting need on slitting roll bending antirust oil；When carrying out the second longitudinal shearing slitting, hot rolling
Roll bending surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, and hot-rolled coil must not have layering, surface to allow have thickness
Spend the deep point of slight point and part, minute bubbles, slight scuffing and the roll impression within margin of tolerance half；Hot rolled coil edges of boards
Edge is neat, without zigzag, and the bounce of blade datum end face should be less than or equal to 0.06mm.
When being rolled, obtained rolling roll bending surface is without sticking up skin, pit, point, yellow rust, scale, scuffing, template
It is straight；Edge：Without plucking, broken side.The surface for the slitting roll bending that second of longitudinal shearing slitting obtains is without sticking up skin, point, pit, water
Rust, scuffing, yellow rust, coining, plate shape is straight, edge is without broken side；It is needed toward on slitting roll bending when carrying out second of longitudinal shearing slitting
Antirust oil.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (8)
1. a kind of method of working hot-rolled strip, which is characterized in that include the following steps：
Step 1: preparing raw material, choosing the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, that the hot-rolled coil got ready in step 1 by row device for hoisting is transported to first is big vertical
Progress first time longitudinal shearing slitting on production line is cut, and slitting roll bending is made；
Step 3: pickling, the slitting roll bending that first time longitudinal shearing slitting obtains is transported to by row device for hoisting on pickling lines
Pickling is carried out, and pickling roll bending is made；
Step 4: rolling, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill rolls, and
Rolling roll bending is made；
Step 5: spheroidizing, by rolling rolling roll bending by row device for hoisting be transported in annealing furnace carry out nodularization move back
Fire is warming up to 260 DEG C at full speed first, by annealing furnace, and keeps the temperature 0.5h-3h after being warming up to 260 DEG C, and secondly, annealing furnace is 260
After keeping the temperature 0.5h-3h at a temperature of DEG C, annealing furnace is warming up to 400 DEG C in 1h-4h, and 1h- is kept the temperature after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 1h-3h at a temperature of 400 DEG C, is warming up to 580 DEG C, and rising by 3h in 1h-4h
Temperature is to keeping the temperature 0.5h-3h after 580 DEG C, and the 4th, after annealing furnace keeps the temperature 0.5h-3h at a temperature of 580 DEG C, by annealing furnace in 1h-
It is warming up to 670 DEG C in 4h, and keeps the temperature 0.5h-3h after being warming up to 670 DEG C, the 5th, annealing furnace keeps the temperature at a temperature of 670 DEG C
After 0.5h-3h, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1h-4h, and 8h- is kept the temperature after being warming up to 680 DEG C to 700 DEG C
16h, the 6th, after annealing furnace keeps the temperature 8h-16h at a temperature of 680 DEG C to 700 DEG C, by annealing furnace by the way of furnace cooling
Temperature be down to 600 DEG C by 680 DEG C to 700 DEG C, the 7th, the temperature of annealing furnace is being down to 600 by the way of furnace cooling
After DEG C, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, by the temperature of annealing furnace
Degree is down to 280 DEG C, and by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, obtained nodularization is moved back
Fiery roll bending；
Step 6: finish rolling, that spheroidizing roll bending that spheroidizing obtains by row device for hoisting is transported to finish rolling production line is enterprising
Row finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, that finish rolling roll bending that finish rolling obtains by row device for hoisting is transported to small banding machine is enterprising
Second of longitudinal shearing slitting of row, and slitting roll bending is made；
Step 8: packaging and storage, using the obtained slitting roll bending of second of longitudinal shearing slitting of baling press pair carrying out packing packaging.
2. a kind of method of working hot-rolled strip according to claim 1, which is characterized in that in the step 3, into
When row pickling, the minus tolerance of the thickness before and after slitting roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two, the number of deactivation slot
Amount is one, and the quantity of neutralization chamber is one, and the pickling concentration of two descaling baths is respectively 18%-22%, 15%-18%, two
Sour position in a descaling bath is 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, and the pH value of neutralization chamber is 11 to 13, passivation
The pH value of slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is 5m/min to 15m/
min。
3. a kind of method of working hot-rolled strip according to claim 1, which is characterized in that in the step 5, in ball
When annealing, annealing furnace is warming up to 260 DEG C at full speed, and 0.6h-1.4h is kept the temperature after being warming up to 260 DEG C；Annealing furnace is at 260 DEG C
At a temperature of keep the temperature 0.6h-1.4h after, annealing furnace is warming up to 400 DEG C in 1.2h-3.5h, and protected after being warming up to 400 DEG C
Warm 1.2h-2.5h；After annealing furnace keeps the temperature 1.2h-2.5h at a temperature of 400 DEG C, annealing furnace is warming up in 1.2h-3.5h
580 DEG C, and keep the temperature 0.6h-1.4h after being warming up to 580 DEG C；It, will after annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 580 DEG C
Annealing furnace is warming up to 670 DEG C in 1.2h-3.5h, and keeps the temperature 0.6h-1.4h after being warming up to 670 DEG C；Annealing furnace is at 670 DEG C
At a temperature of heat preservation 0.6h-1.4h after, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1.2h-3.5h, and be warming up to 680 DEG C
9h-15h is kept the temperature after to 700 DEG C；After annealing furnace keeps the temperature 9h-15h at a temperature of 680 DEG C to 700 DEG C, using the side of furnace cooling
The temperature of annealing furnace is down to 600 DEG C by formula by 680 DEG C to 700 DEG C.
4. a kind of method of working hot-rolled strip according to claim 3, which is characterized in that in spheroidizing, will move back
Stove is warming up to 260 DEG C at full speed, and keeps the temperature 0.8h-1.2h after being warming up to 260 DEG C；Annealing furnace is kept the temperature at a temperature of 260 DEG C
After 0.8h-1.2h, annealing furnace is warming up to 400 DEG C in 1.6h-2.5h, and 1.5h-2.2h is kept the temperature after being warming up to 400 DEG C；
After annealing furnace keeps the temperature 1.5h-2.2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 1.6h-2.5h, and rising
Temperature is to keeping the temperature 0.8h-1.2h after 580 DEG C；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 580 DEG C, by annealing furnace in 1.6h-
It is warming up to 670 DEG C in 2.5h, and 0.8h-1.2h is kept the temperature after being warming up to 670 DEG C；Annealing furnace is kept the temperature at a temperature of 670 DEG C
After 0.8h-1.2h, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1.6h-2.5h, and after being warming up to 680 DEG C to 700 DEG C
Keep the temperature 11h-13h；After annealing furnace keeps the temperature 11h-13h at a temperature of 680 DEG C to 700 DEG C, it will be moved back by the way of furnace cooling
The temperature of stove is down to 600 DEG C by 680 DEG C to 700 DEG C.
5. a kind of method of working hot-rolled strip according to claim 4, which is characterized in that in spheroidizing, will move back
Stove is warming up to 260 DEG C at full speed, and keeps the temperature 1h after being warming up to 260 DEG C；It, will after annealing furnace keeps the temperature 1h at a temperature of 260 DEG C
Annealing furnace is warming up to 400 DEG C in 2h, and keeps the temperature 2h after being warming up to 400 DEG C；Annealing furnace keeps the temperature 2h at a temperature of 400 DEG C
Afterwards, annealing furnace is warming up to 580 DEG C in 2h, and 1h is kept the temperature after being warming up to 580 DEG C；Annealing furnace is protected at a temperature of 580 DEG C
After warm 1h, annealing furnace is warming up to 670 DEG C in 2h, and 1h is kept the temperature after being warming up to 670 DEG C；Temperature of the annealing furnace at 670 DEG C
After lower heat preservation 1h, annealing furnace is warming up to 680 DEG C to 700 DEG C in 2h, and 12h is kept the temperature after being warming up to 680 DEG C to 700 DEG C；
After annealing furnace keeps the temperature 12h at a temperature of 680 DEG C to 700 DEG C, by the temperature of annealing furnace by 680 DEG C by the way of furnace cooling
It is down to 600 DEG C to 700 DEG C.
6. a kind of method of working hot-rolled strip according to claim 1, which is characterized in that in the step 6, into
Before row finish rolling, the Oxygen potential of spheroidizing roll bending need to be detected first with metallographic microscope, and qualified annealing will be detected
Roll bending carries out finish rolling.
7. a kind of method of working hot-rolled strip according to claim 1, which is characterized in that in the step 7, into
Before second of longitudinal shearing slitting of row, the hardness of finish rolling roll bending need to be detected first with universal testing machine and hardometer, and essence
Roll acceptability limit Wei≤160HV of the hardness number of roll bending.
8. a kind of method of working hot-rolled strip according to claim 7, which is characterized in that the hardness number of finish rolling roll bending
Acceptability limit Wei≤140HV.
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| CN107881303A (en) * | 2017-12-30 | 2018-04-06 | 江苏创泰特钢制品有限公司 | Steel annealing process |
| CN108311540A (en) * | 2018-02-26 | 2018-07-24 | 包头钢铁（集团）有限责任公司 | Steel production method, steel production system and computer readable storage medium |
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| JP4299435B2 (en) * | 2000-04-05 | 2009-07-22 | 新日本製鐵株式会社 | Manufacturing method of hot-rolled steel sheet |
| CN1319660C (en) * | 2005-07-22 | 2007-06-06 | 濮德兴 | High-precision very-thin special-wide cold-rolled steel band and its working process |
| JP5050433B2 (en) * | 2005-10-05 | 2012-10-17 | Ｊｆｅスチール株式会社 | Method for producing extremely soft high carbon hot-rolled steel sheet |
| CN100560354C (en) * | 2006-06-13 | 2009-11-18 | 永鑫精密材料（无锡）有限公司 | A kind of production technology of composite nickel steel band |
| CN101307378A (en) * | 2008-07-03 | 2008-11-19 | 山西太钢不锈钢股份有限公司 | Spheroidizing annealing process for medium carbon steel plate in bell furnace |
| CN101845601B (en) * | 2009-03-26 | 2011-11-23 | 上海祝桥金属冲压延有限公司 | Ultrahigh strength cold rolled steel strip for automobile seat |
| JP5392857B2 (en) * | 2011-01-24 | 2014-01-22 | 日新製鋼株式会社 | Manufacturing method for medium and high carbon steel sheets with excellent machinability |
| CN103014265A (en) * | 2012-11-27 | 2013-04-03 | 大连经济技术开发区圣洁真空技术开发有限公司 | Spheroidizing annealing process for bearing steel |
| CN103014261B (en) * | 2012-11-27 | 2015-04-08 | 大连经济技术开发区圣洁真空技术开发有限公司 | Link plate balling and annealing technology |
| CN105200308B (en) * | 2014-05-28 | 2017-05-31 | 宝山钢铁股份有限公司 | Fine steel and its governor motion fine parts manufacture method |
| CN105234171B (en) * | 2015-09-17 | 2017-11-07 | 武汉钢铁江北集团精密带钢有限公司 | A kind of 4B cold rolled precisions steel band and its manufacture method |
| CN105274308B (en) * | 2015-10-27 | 2017-08-25 | 江苏丰东热处理及表面改性工程技术研究有限公司 | Automobile engine cam vacuum isothermal annealing process |
| CN105543461A (en) * | 2015-12-30 | 2016-05-04 | 苏州翔楼金属制品有限公司 | Thermal treatment process for cold-rolled steel strip S50C for automobile flywheel disc |
| CN105567948A (en) * | 2015-12-31 | 2016-05-11 | 江苏创泰特钢制品有限公司 | Spheroidizing annealing temperature control process of cold-rolled steel coil |
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2016
- 2016-08-29 CN CN201711460200.5A patent/CN107881302A/en active Pending
- 2016-08-29 CN CN201711460188.8A patent/CN108193027B/en active Active
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Also Published As
| Publication number | Publication date |
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| CN106140812A (en) | 2016-11-23 |
| CN108193027B (en) | 2019-08-23 |
| CN108193027A (en) | 2018-06-22 |
| CN107881302A (en) | 2018-04-06 |
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