CN106086350B - A kind of processing technology of strip - Google Patents

A kind of processing technology of strip Download PDF

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Publication number
CN106086350B
CN106086350B CN201610755057.1A CN201610755057A CN106086350B CN 106086350 B CN106086350 B CN 106086350B CN 201610755057 A CN201610755057 A CN 201610755057A CN 106086350 B CN106086350 B CN 106086350B
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annealing furnace
warming
temperature
incubated
roll bending
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CN106086350A (en
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宁立峥
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HUBEI DAFAN METAL PRODUCTS Co Ltd
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HUBEI DAFAN METAL PRODUCTS Co Ltd
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Priority to CN201810020573.9A priority Critical patent/CN108220548B/en
Priority to CN201810020587.0A priority patent/CN108193028B/en
Priority to CN201610755057.1A priority patent/CN106086350B/en
Priority to CN201810020575.8A priority patent/CN108239693B/en
Priority to CN201810020582.8A priority patent/CN108251610B/en
Priority to CN201810020574.3A priority patent/CN108165709B/en
Publication of CN106086350A publication Critical patent/CN106086350A/en
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    • 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
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • 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
    • 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
    • B21B2015/0021—Cutting or shearing the product in the rolling direction

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The present invention relates to a kind of processing technology of strip, comprise the following steps：Choose the hot-rolled coil that the trade mark is SCM435；First time longitudinal shearing slitting will be carried out；The hot-rolled coil of first time longitudinal shearing slitting is subjected to soft annealing by annealing furnace/ammonia destruction furnace, soft annealing roll bending is made；Soft annealing roll bending is subjected to pickling, and pickling roll bending is made；Pickling roll bending is rolled, and rolling roll bending is made；Rolling roll bending is subjected to spheroidizing by annealing furnace/ammonia destruction furnace, spheroidizing roll bending is made；Spheroidizing roll bending is subjected to finish rolling, and finish rolling roll bending is made；Finish rolling roll bending is subjected to second of longitudinal shearing slitting by small banding machine, and slitting roll bending is made；Packaging and storage, using baling press packing packaging is carried out to slitting roll bending.The beneficial effects of the invention are as follows：Can stabilized product quality, raise labour productivity.

Description

A kind of processing technology of strip
Technical field
The present invention relates to strip to produce and process technical field, more particularly to a kind of processing technology of strip.
Background technology
It is well known that strip is a kind of narrow and long steel plate in order to adapt to different industrial department needs and produce.It is wide Spend typically within 300mm, but as economic development, width do not limit.Strip is supplied in rolls, have dimensional accuracy it is high, Surface quality is good, is easy to process, saves the advantages that material, is widely used in production welded still pipe, makees the blank of cold-rolled forming section, manufacture Cycle frame, wheel rim, clip, packing ring, spring leaf, saw blade and blade, the first-class field of sole and ladle of Labor protection shoes.
Influenceed by the processing technology of current strip, its strip quality produced is not sufficiently stable, in production process In easily there is defective work, cause whole production efficiency than relatively low..
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of being capable of stabilized product quality, the band raised labour productivity The processing technology of steel.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into first by row device for hoisting First time longitudinal shearing slitting is carried out on big splitting production line；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 1h to 5h is incubated after being warming up to 400 DEG C, secondly, Annealing furnace is warming up to 600 DEG C, and be warming up to 600 by annealing furnace after insulation 1h to 5h at a temperature of 400 DEG C in 1h to 6h 0.5h to 4h is incubated after DEG C, again, after annealing furnace is incubated 0.5h to 4h at a temperature of 600 DEG C, by annealing furnace in 1h to 5h Be warming up to 690 DEG C, and 0.5h to 4h be incubated after being warming up to 690 DEG C, the 4th, annealing furnace be incubated 0.5h at a temperature of 690 DEG C To 4h, annealing furnace is warming up to 710 DEG C to 730 DEG C in 1h to 5h, and 10h is incubated extremely after being warming up to 710 DEG C to 730 DEG C 18h, the 5th, after annealing furnace is incubated 10h to 18h at a temperature of 710 DEG C to 730 DEG C, will annealing by the way of furnace cooling Stove cool down 4h to 8h, the 6th, using furnace cooling by the way of to annealing furnace cooling 4h to 8h after, annealing furnace is carried out to change cover wind It is cold, and the temperature of annealing furnace is down to 280 DEG C, the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, will move back The temperature of stove is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, and soft annealing roll bending is made；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 1h to 5h is incubated after being warming up to 400 DEG C, its Annealing furnace is warming up to 640 DEG C, and be warming up to by secondary, annealing furnace after insulation 1h to 5h at a temperature of 400 DEG C in 1h to 6h 0.5h to 4h is incubated after 640 DEG C, again, after annealing furnace is incubated 0.5h to 4h at a temperature of 640 DEG C, by annealing furnace in 1h to 5h Inside it is warming up to 730 DEG C, and 0.5h to 4h is incubated after being warming up to 730 DEG C, the 4th, annealing furnace is incubated at a temperature of 730 DEG C After 0.5h to 4h, annealing furnace is warming up to 740 DEG C to 760 DEG C in 0.5h to 2h, and protected after being warming up to 740 DEG C to 760 DEG C Warm 10h to 16h, the 5th, after annealing furnace is incubated 10h to 16h at a temperature of 740 DEG C to 760 DEG C, by the way of furnace cooling The temperature of annealing furnace is down to 550 DEG C to 600 DEG C, the 6th, the temperature of annealing furnace is being down to 550 by the way of furnace cooling DEG C to 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, the 7th, the temperature of annealing furnace After being down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, obtained nodularization is moved back Fiery roll bending；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
The beneficial effects of the invention are as follows：By to hot-rolled coil carry out soft annealing when, by whole soft annealing process Some stages are divided into, and effectively control heating-up time, soaking time and the temperature in each stage in each stage, and When carrying out spheroidizing to rolling roll bending, whole spheroidizing process is divided into some stages, and effectively controlled each Heating-up time, soaking time and the temperature in each stage in individual stage, so that the product quality produced is stable, product Qualification rate gets a promotion, so as to further improve labor productivity.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, in the step 3, in soft annealing, annealing furnace is warming up to 400 DEG C at full speed, and be warming up to 1.5h to 3h is incubated after 400 DEG C；Annealing furnace rises annealing furnace after insulation 1.5h to 3h at a temperature of 400 DEG C in 2h to 4h Temperature is incubated 0.6h to 2h to 600 DEG C after being warming up to 600 DEG C；After annealing furnace is incubated 0.6h to 2h at a temperature of 600 DEG C, Annealing furnace is warming up to 690 DEG C in 1.5h to 3h, and 0.6h to 2h is incubated after being warming up to 690 DEG C；Annealing furnace is at 690 DEG C At a temperature of be incubated 0.6h to 2h after, annealing furnace is warming up to 710 DEG C to 730 DEG C in 1.5h to 3h, and be warming up to 710 DEG C extremely 11h to 16h is incubated after 730 DEG C；Annealing furnace is after insulation 11h to 16h at a temperature of 710 DEG C to 730 DEG C, using furnace cooling Annealing furnace is cooled down 4.5h to 7.2h by mode.
Further, in soft annealing, annealing furnace is warming up to 400 DEG C at full speed, and 1.8h is incubated after being warming up to 400 DEG C To 2.4h；Annealing furnace is warming up to 600 by annealing furnace after insulation 1.8h to 2.4h at a temperature of 400 DEG C in 2.8h to 3.4h DEG C, and 0.8h to 1.2h is incubated after being warming up to 600 DEG C；Annealing furnace will move back after insulation 0.8h to 1.2h at a temperature of 600 DEG C Stove is warming up to 690 DEG C in 1.8h to 2.4h, and 0.8h to 1.2h is incubated after being warming up to 690 DEG C；Annealing furnace is at 690 DEG C At a temperature of be incubated 0.8h to 1.2h after, annealing furnace is warming up to 710 DEG C to 730 DEG C in 1.8h to 2.4h, and be warming up to 710 DEG C to being incubated 11.2h to 15.6h after 730 DEG C；Annealing furnace is adopted after insulation 11.2h to 15.6h at a temperature of 710 DEG C to 730 DEG C Annealing furnace is cooled down into 5.2h to 6.4h with the mode of furnace cooling.
Further, in soft annealing, need to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace； In whole heating and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C.
It is using above-mentioned further beneficial effect：The stability of soft annealing roll bending quality can effectively be ensured.
Further, in step 4, before pickling is carried out, Oxygen potential that need to be first with metallographic microscope to soft annealing roll bending Detected, and put into qualified soft annealing roll bending is detected on pickling lines.
It is using above-mentioned further beneficial effect：The parameter in production technology can be adjusted in time according to detection data Value, it is ensured that the quality of production.
Further, in step 4 when carrying out pickling, the minus tolerance of the thickness before and after soft annealing 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% to 22%, 15% to 18%, and the sour position in two descaling baths is 380mm to 420mm, acid liquor temperature For 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 beneficial effect：Roll bending caused oxidation during soft annealing can effectively be removed Skin, avoid influenceing following process.
Further, in the step 6, in spheroidizing, annealing furnace is warming up to 400 DEG C at full speed, and be warming up to 1.5h to 3h is incubated after 400 DEG C；Annealing furnace rises annealing furnace after insulation 1.5h to 3h at a temperature of 400 DEG C in 2h to 4h Temperature is incubated 0.6h to 2h to 640 DEG C after being warming up to 640 DEG C；After annealing furnace is incubated 0.6h to 2h at a temperature of 640 DEG C, Annealing furnace is warming up to 730 DEG C in 1.5h to 3h, and 0.6h to 2h is incubated after being warming up to 730 DEG C；Annealing furnace is at 730 DEG C At a temperature of be incubated 0.6h to 2h after, annealing furnace is warming up to 740 DEG C to 760 DEG C in 0.5h to 1.8h, and be warming up to 740 DEG C 11h to 14h is incubated after to 760 DEG C.
Further, in spheroidizing, annealing furnace is warming up to 400 DEG C at full speed, and 1.8h is incubated after being warming up to 400 DEG C To 2.4h；Annealing furnace is warming up to 640 by annealing furnace after insulation 1.8h to 2.4h at a temperature of 400 DEG C in 2.5h to 3.2h DEG C, and 0.6h to 1.2h is incubated after being warming up to 640 DEG C；Annealing furnace will move back after insulation 0.6h to 1.2h at a temperature of 640 DEG C Stove is warming up to 730 DEG C in 1.8h to 2.4h, and 0.6h to 1.2h is incubated after being warming up to 730 DEG C；Annealing furnace is at 730 DEG C At a temperature of be incubated 0.6h to 1.2h after, annealing furnace is warming up to 740 DEG C to 760 DEG C in 0.6h to 1.2h, and be warming up to 740 DEG C to being incubated 12h to 13.5h after 760 DEG C.
Further, in spheroidizing, need to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace； In whole heating and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C.
It is using above-mentioned further beneficial effect：The stability of spheroidizing roll bending quality can effectively be ensured.
Further,, need to be first with universal testing machine and hardometer to essence before second of longitudinal shearing slitting is carried out in step 8 The hardness for rolling roll bending is detected, and the acceptability limit of the hardness number of finish rolling roll bending is 75HRB to 85HRB；Hardness number is closed The finish rolling roll bending of lattice carries out metallographic detection, and metallographic is detected into also qualified finish rolling roll bending and put on small banding machine.
It is using above-mentioned further beneficial effect：The parameter in production technology can be adjusted in time according to detection data Value, it is ensured that the quality of production.
Brief description of the drawings
Fig. 1 be strip of the present invention processing technology in soft annealing curve map；
Fig. 2 be strip of the present invention processing technology in spheroidizing curve map；
The metallographic reference picture that Fig. 3 detects for metallographic in the processing technology of strip of the present invention.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, 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 and Figure 2, a kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435, wherein, the change of SCM435 hot-rolled coil The requirement for studying part is：C:0.33 to 0.38, Si:0.15 to 0.35, Mn:0.60 to 0.90, P：≦0.030、S：≦0.030、 Cr：0.90 to 1.20, Ni：≦0.25、Mo：0.15 to 0.30；The requirement of the mechanical property of SCM435 hot-rolled coil is：Tension Intensity:≦1000MPa；The requirement of the metallographic of SCM435 hot-rolled coil is：Ferrite+pearlitic structrure, decarburized layer, works as thickness >5mm, it is allowed to Tuo Tan≤1%t, wherein t be hot rolled steel plate thickness, Dang Hou Du≤5mm, it is allowed to decarburization<50 μm, banded structure< 2 grades, field trash is carefully<2 grades, in the present embodiment, the thickness for choosing the hot-rolled coil that the trade mark is SCM435 is 3mm to 8.0mm, It is preferred that 5mm to 6mm；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into 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 reserved 0.5mm or so surplus, the thickness tolerance of hot-rolled coil should meet GB/T709 regulation, 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 slight pit within thickness deviation scope half and local deep pit, 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；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 1h is incubated after being warming up to 400 DEG C, secondly, is annealed Annealing furnace is warming up to 600 DEG C, and be incubated after being warming up to 600 DEG C by stove after insulation 1h at a temperature of 400 DEG C in 1h 0.5h, again, after annealing furnace is incubated 0.5h at a temperature of 600 DEG C, annealing furnace is warming up to 690 DEG C in 1h, and heating up It is incubated 0.5h after to 690 DEG C, the 4th, after annealing furnace is incubated 0.5h at a temperature of 690 DEG C, annealing furnace is warming up in 1h 710 DEG C to 730 DEG C, and 10h is incubated after being warming up to 710 DEG C to 730 DEG C, the 5th, temperature of the annealing furnace at 710 DEG C to 730 DEG C After lower insulation 10h, annealing furnace is cooled down into 4.5h by the way of furnace cooling, the 6th, by the way of furnace cooling to moving back After stove cooling 4.5h, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, the temperature of annealing furnace After degree is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, softening is made Annealing roll bending；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made, wherein, the thickness after roll bending rolls is 4mm；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 1h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 640 DEG C, and be incubated after being warming up to 640 DEG C by stove after insulation 1h at a temperature of 400 DEG C in 1h 0.5h, again, after annealing furnace is incubated 0.5h at a temperature of 640 DEG C, annealing furnace is warming up to 730 DEG C in 1h, and heating up It is incubated 0.5h after to 730 DEG C, the 4th, after annealing furnace is incubated 0.5h at a temperature of 730 DEG C, annealing furnace is warming up in 0.5h 740 DEG C to 760 DEG C, and 10h is incubated after being warming up to 740 DEG C to 760 DEG C, the 5th, temperature of the annealing furnace at 740 DEG C to 760 DEG C After lower insulation 10h, the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the way of furnace cooling, the 6th, using with stove After the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the mode of cooling, to annealing furnace change that cover is air-cooled, and by annealing furnace Temperature is down to 280 DEG C, and the 7th, after 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, it is last, come out of the stove, spheroidizing roll bending is made；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made, wherein, the thickness of finish rolling roll bending is 3.5mm；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
Embodiment two：As shown in Figure 1 and Figure 2, a kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435, wherein, the change of SCM435 hot-rolled coil The requirement for studying part is：C:0.33 to 0.38, Si:0.15 to 0.35, Mn:0.60 to 0.90, P：≦0.030、S：≦0.030、 Cr：0.90 to 1.20, Ni：≦0.25、Mo：0.15 to 0.30；The requirement of the mechanical property of SCM435 hot-rolled coil is：Tension Intensity:≦1000MPa；The requirement of the metallographic of SCM435 hot-rolled coil is：Ferrite+pearlitic structrure, decarburized layer, works as thickness >5mm, it is allowed to Tuo Tan≤1%t, wherein t be hot rolled steel plate thickness, Dang Hou Du≤5mm, it is allowed to decarburization<50 μm, banded structure< 2 grades, field trash is carefully<2 grades, in the present embodiment, the thickness for choosing the hot-rolled coil that the trade mark is SCM435 is 3mm to 8.0mm, It is preferred that 5mm to 6mm；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into 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 reserved 0.5mm or so surplus, the thickness tolerance of hot-rolled coil should meet GB/T709 regulation, 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 slight pit within thickness deviation scope half and local deep pit, 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；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 1.8h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 600 DEG C, and protected after being warming up to 600 DEG C by stove after insulation 1.8h at a temperature of 400 DEG C in 2.8h Warm 0.8h, again, after annealing furnace is incubated 0.8h at a temperature of 600 DEG C, annealing furnace is warming up to 690 DEG C in 1.8h, and It is incubated 0.8h after being warming up to 690 DEG C, the 4th, after annealing furnace is incubated 0.8h at a temperature of 690 DEG C, annealing furnace is risen in 1.8h Temperature and is incubated 11.2h to 710 DEG C to 730 DEG C after being warming up to 710 DEG C to 730 DEG C, and the 5th, annealing furnace is at 710 DEG C to 730 DEG C At a temperature of be incubated 11.2h after, annealing furnace is cooled down into 5.2h by the way of furnace cooling, the 6th, using furnace cooling After mode cools down 5.2h to annealing furnace, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, move back After the temperature of stove is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, Soft annealing roll bending is made；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made, wherein, the thickness after roll bending rolls is 4mm；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 1.8h is incubated after being warming up to 400 DEG C, secondly, Annealing furnace is warming up to 640 DEG C by annealing furnace after insulation 1.8h at a temperature of 400 DEG C in 2.5h, and after being warming up to 640 DEG C 0.6h is incubated, again, after annealing furnace is incubated 0.6h at a temperature of 640 DEG C, annealing furnace is warming up to 730 DEG C in 1.8h, and It is incubated 0.6h after being warming up to 730 DEG C, the 4th, after annealing furnace is incubated 0.6h at a temperature of 730 DEG C, by annealing furnace in 0.6h 740 DEG C to 760 DEG C are warming up to, and 12h is incubated after being warming up to 740 DEG C to 760 DEG C, the 5th, annealing furnace is at 740 DEG C to 760 DEG C At a temperature of be incubated 12h after, the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the way of furnace cooling, the 6th, adopting After the temperature of annealing furnace is down into 550 DEG C to 600 DEG C with the mode of furnace cooling, it is air-cooled to annealing furnace change cover, and will move back The temperature of stove is down to 280 DEG C, and the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace Degree is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, and spheroidizing roll bending is made；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made, wherein, the thickness of finish rolling roll bending is 3.5mm；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
Embodiment three：As shown in Figure 1 and Figure 2, a kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435, wherein, the change of SCM435 hot-rolled coil The requirement for studying part is：C:0.33 to 0.38, Si:0.15 to 0.35, Mn:0.60 to 0.90, P：≦0.030、S：≦0.030、 Cr：0.90 to 1.20, Ni：≦0.25、Mo：0.15 to 0.30；The requirement of the mechanical property of SCM435 hot-rolled coil is：Tension Intensity:≦1000MPa；The requirement of the metallographic of SCM435 hot-rolled coil is：Ferrite+pearlitic structrure, decarburized layer, works as thickness >5mm, it is allowed to Tuo Tan≤1%t, wherein t be hot rolled steel plate thickness, Dang Hou Du≤5mm, it is allowed to decarburization<50 μm, banded structure< 2 grades, field trash is carefully<2 grades, in the present embodiment, the thickness for choosing the hot-rolled coil that the trade mark is SCM435 is 3mm to 8.0mm, It is preferred that 5mm to 6mm；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into 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 reserved 0.5mm or so surplus, the thickness tolerance of hot-rolled coil should meet GB/T709 regulation, 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 slight pit within thickness deviation scope half and local deep pit, 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；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 2.4h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 600 DEG C, and protected after being warming up to 600 DEG C by stove after insulation 2.4h at a temperature of 400 DEG C in 3.4h Warm 1.2h, again, after annealing furnace is incubated 1.2h at a temperature of 600 DEG C, annealing furnace is warming up to 690 DEG C in 2.4h, and It is incubated 1.2h after being warming up to 690 DEG C, the 4th, after annealing furnace is incubated 1.2h at a temperature of 690 DEG C, annealing furnace is risen in 2.4h Temperature and is incubated 15.6h to 710 DEG C to 730 DEG C after being warming up to 710 DEG C to 730 DEG C, and the 5th, annealing furnace is at 710 DEG C to 730 DEG C At a temperature of be incubated 15.6h after, annealing furnace is cooled down into 6.4h by the way of furnace cooling, the 6th, using furnace cooling After mode cools down 6.4h to annealing furnace, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, move back After the temperature of stove is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, Soft annealing roll bending is made；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made, wherein, the thickness after roll bending rolls is 4mm；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 2.4h is incubated after being warming up to 400 DEG C, secondly, Annealing furnace is warming up to 640 DEG C by annealing furnace after insulation 2.4h at a temperature of 400 DEG C in 3.2h, and after being warming up to 640 DEG C 1.2h is incubated, again, after annealing furnace is incubated 1.2h at a temperature of 640 DEG C, annealing furnace is warming up to 730 DEG C in 2.4h, and It is incubated 1.2h after being warming up to 730 DEG C, the 4th, after annealing furnace is incubated 1.2h at a temperature of 730 DEG C, by annealing furnace in 1.2h 740 DEG C to 760 DEG C are warming up to, and 14h is incubated after being warming up to 740 DEG C to 760 DEG C, the 5th, annealing furnace is at 740 DEG C to 760 DEG C At a temperature of be incubated 14h after, the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the way of furnace cooling, the 6th, adopting After the temperature of annealing furnace is down into 550 DEG C to 600 DEG C with the mode of furnace cooling, it is air-cooled to annealing furnace change cover, and will move back The temperature of stove is down to 280 DEG C, and the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace Degree is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, and spheroidizing roll bending is made；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made, wherein, the thickness of finish rolling roll bending is 3.5mm；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
Example IV：As shown in Figure 1 and Figure 2, a kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435, wherein, the change of SCM435 hot-rolled coil The requirement for studying part is：C:0.33 to 0.38, Si:0.15 to 0.35, Mn:0.60 to 0.90, P：≦0.030、S：≦0.030、 Cr：0.90 to 1.20, Ni：≦0.25、Mo：0.15 to 0.30；The requirement of the mechanical property of SCM435 hot-rolled coil is：Tension Intensity:≦1000MPa；The requirement of the metallographic of SCM435 hot-rolled coil is：Ferrite+pearlitic structrure, decarburized layer, works as thickness >5mm, it is allowed to Tuo Tan≤1%t, wherein t be hot rolled steel plate thickness, Dang Hou Du≤5mm, it is allowed to decarburization<50 μm, banded structure< 2 grades, field trash is carefully<2 grades, in the present embodiment, the thickness for choosing the hot-rolled coil that the trade mark is SCM435 is 3mm to 8.0mm, It is preferred that 5mm to 6mm；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into 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 reserved 0.5mm or so surplus, the thickness tolerance of hot-rolled coil should meet GB/T709 regulation, 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 slight pit within thickness deviation scope half and local deep pit, 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；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 5h is incubated after being warming up to 400 DEG C, secondly, is annealed Annealing furnace is warming up to 600 DEG C by stove after insulation 5h at a temperature of 400 DEG C in 6h, and is incubated 4h after being warming up to 600 DEG C, Again, annealing furnace is warming up to 690 DEG C, and be warming up to 690 DEG C by annealing furnace after insulation 4h at a temperature of 600 DEG C in 5h After be incubated 4h, the 4th, after annealing furnace is incubated 4h at a temperature of 690 DEG C, annealing furnace is warming up to 710 DEG C to 730 DEG C in 5h, And 18h is incubated after being warming up to 710 DEG C to 730 DEG C, the 5th, after annealing furnace is incubated 18h at a temperature of 710 DEG C to 730 DEG C, adopt Annealing furnace is cooled down into 7.2h with the mode of furnace cooling, the 6th, after 7.2h is cooled down to annealing furnace by the way of furnace cooling, To annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, after the temperature of annealing furnace is down to 280 DEG C, By the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, soft annealing roll bending is made；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made, wherein, the thickness after roll bending rolls is 4mm；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 5h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 640 DEG C, and be incubated after being warming up to 640 DEG C by stove after insulation 5h at a temperature of 400 DEG C in 6h 4h, again, after annealing furnace is incubated 4h at a temperature of 640 DEG C, annealing furnace is warming up to 730 DEG C in 4h, and be warming up to 730 It is incubated 5h after DEG C, the 4th, after annealing furnace is incubated 5h at a temperature of 730 DEG C, annealing furnace is warming up to 740 DEG C to 760 in 2h DEG C, and 16h is incubated after being warming up to 740 DEG C to 760 DEG C, the 5th, annealing furnace be incubated 16h at a temperature of 740 DEG C to 760 DEG C Afterwards, the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the way of furnace cooling, the 6th, by the way of furnace cooling After the temperature of annealing furnace is down into 550 DEG C to 600 DEG C, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, Finally, come out of the stove, spheroidizing roll bending is made；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made, wherein, the thickness of finish rolling roll bending is 3.5mm；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
Embodiment five：As shown in Figure 1 and Figure 2, a kind of processing technology of strip, comprises the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435, wherein, the change of SCM435 hot-rolled coil The requirement for studying part is：C:0.33 to 0.38, Si:0.15 to 0.35, Mn:0.60 to 0.90, P：≦0.030、S：≦0.030、 Cr：0.90 to 1.20, Ni：≦0.25、Mo：0.15 to 0.30；The requirement of the mechanical property of SCM435 hot-rolled coil is：Tension Intensity:≦1000MPa；The requirement of the metallographic of SCM435 hot-rolled coil is：Ferrite+pearlitic structrure, decarburized layer, works as thickness >5mm, it is allowed to Tuo Tan≤1%t, wherein t be hot rolled steel plate thickness, Dang Hou Du≤5mm, it is allowed to decarburization<50 μm, banded structure< 2 grades, field trash is carefully<2 grades, in the present embodiment, the thickness for choosing the hot-rolled coil that the trade mark is SCM435 is 3mm to 8.0mm, It is preferred that 5mm to 6mm；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported into 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 reserved 0.5mm or so surplus, the thickness tolerance of hot-rolled coil should meet GB/T709 regulation, 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 slight pit within thickness deviation scope half and local deep pit, 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；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing is transported to by row device for hoisting In stove/ammonia destruction furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 2h is incubated after being warming up to 400 DEG C, secondly, is annealed Annealing furnace is warming up to 600 DEG C by stove after insulation 2h at a temperature of 400 DEG C in 3h, and is incubated 1h after being warming up to 600 DEG C, Again, annealing furnace is warming up to 690 DEG C, and be warming up to 690 DEG C by annealing furnace after insulation 1h at a temperature of 600 DEG C in 2h After be incubated 1h, the 4th, after annealing furnace is incubated 1h at a temperature of 690 DEG C, annealing furnace is warming up to 710 DEG C to 730 DEG C in 2h, And 13h is incubated after being warming up to 710 DEG C to 730 DEG C, the 5th, after annealing furnace is incubated 13h at a temperature of 710 DEG C to 730 DEG C, adopt Annealing furnace is cooled down into 6h with the mode of furnace cooling, the 6th, after 6h is cooled down to annealing furnace by the way of furnace cooling, to moving back Stove change that cover is air-cooled, and the temperature of annealing furnace is down into 280 DEG C, and the 7th, after the temperature of annealing furnace is down to 280 DEG C, use The mode of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, soft annealing roll bending is made；
Step 4: pickling, the soft annealing roll bending that soft annealing obtains is transported into pickling lines by row device for hoisting Upper carry out pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling be transported on production line of rolling mill by row device for hoisting carried out Rolling, and rolling roll bending is made, wherein, the thickness after roll bending rolls is 4mm；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported into annealing furnace/ammonolysis craft by row device for hoisting Spheroidizing is carried out in stove, is warming up to 400 DEG C at full speed first, by annealing furnace, and 2h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 640 DEG C, and be incubated after being warming up to 640 DEG C by stove after insulation 2h at a temperature of 400 DEG C in 3h 1h, again, after annealing furnace is incubated 1h at a temperature of 640 DEG C, annealing furnace is warming up to 730 DEG C in 2h, and be warming up to 730 It is incubated 1h after DEG C, the 4th, after annealing furnace is incubated 1h at a temperature of 730 DEG C, annealing furnace is warming up to 740 DEG C to 760 in 1h DEG C, and 12h is incubated after being warming up to 740 DEG C to 760 DEG C, the 5th, annealing furnace be incubated 12h at a temperature of 740 DEG C to 760 DEG C Afterwards, the temperature of annealing furnace is down to 550 DEG C to 600 DEG C by the way of furnace cooling, the 6th, by the way of furnace cooling After the temperature of annealing furnace is down into 550 DEG C to 600 DEG C, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C, the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, Finally, come out of the stove, spheroidizing roll bending is made；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolls production Finish rolling is carried out on line, and finish rolling roll bending is made, wherein, the thickness of finish rolling roll bending is 3.5mm；
Step 8: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported into small banding machine by row device for hoisting Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 9: packaging and storage, being packed to the slitting roll bending obtained by after second of longitudinal shearing slitting using baling press Packaging.
In the present invention, it is preferred to the technical scheme of embodiment five, according to the thickness of corresponding hot-rolled coil, is formulated specific Soft annealing, the operating process of spheroidizing, so as to effectively control the stability for the product quality produced, and product Performance, when the thickness of hot-rolled coil changes, soft annealing, the operating process of spheroidizing are also required to change.
In soft annealing, need to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；Entirely rising In temperature and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C, and actual temperature value is measured by thermocouple, inspection The frequency of survey is 1 time/1h, in addition, can suitably increase insulation platform in temperature-rise period, to meet theoretical raising speed.
In spheroidizing, need to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；Entirely rising In temperature and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C, and actual temperature value is measured by thermocouple, inspection The frequency of survey is 1 time/1h, in addition, can suitably increase insulation platform in temperature-rise period, to meet theoretical raising speed.
Strip is in whole production technology, it is necessary to be detected twice, wherein once being shown before pickling is carried out by metallographic Micro mirror detects to the Oxygen potential of soft annealing roll bending, and puts into pickling lines by qualified soft annealing roll bending is detected On, judge the whether qualified standard of soft annealing roll bending according to JB/T 5074-2007 standard components wherein in Oxygen potential detection process In, 5 grades or 6 grades of the classification of medium carbon structural alloy steel nodularization body；In addition once before second of longitudinal shearing slitting is carried out, by omnipotent Testing machine and hardometer detect to the hardness of finish rolling roll bending, and the acceptability limit of the hardness number of finish rolling roll bending is 75HRB To 85HRB；The finish rolling roll bending qualified to hardness number carries out metallographic detection, metallographic detection also qualified finish rolling roll bending is put into small On banding machine, metallographic detection reference JB/T5074 to 2007 regulation, wherein shown in reference picture 3.
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, and surface allows have thickness Slight pit and local deep pit, minute bubbles, slight scuffing and the roll impression spent 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, resulting rolling roll bending surface is without sticking up skin, pit, pit, 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, pit, pit, water Rust, scuffing, Huang becomes rusty, imprinted, plate shape is straight, edge is without broken side；Needed when carrying out second of longitudinal shearing slitting toward on slitting roll bending Antirust oil.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (10)

1. a kind of processing technology of strip, it is characterised in that comprise the following steps：
Step 1: the hot-rolled coil that preparing raw material, the selection trade mark are SCM435；
Step 2: first time longitudinal shearing slitting, that by row device for hoisting the hot-rolled coil got ready in step 1 is transported into first is big vertical Cut progress first time longitudinal shearing slitting on production line；
Step 3: soft annealing, by complete first time longitudinal shearing slitting hot-rolled coil annealing furnace/ammonia is transported to by row device for hoisting Secondly, annealing furnace in dore furnace, 400 DEG C are warming up at full speed first, by annealing furnace, and 1h to 5h is incubated after being warming up to 400 DEG C, After insulation 1h to 5h at a temperature of 400 DEG C, annealing furnace is warming up to 600 DEG C in 1h to 6h, and protected after being warming up to 600 DEG C Warm 0.5h to 4h, again, after annealing furnace is incubated 0.5h to 4h at a temperature of 600 DEG C, annealing furnace is warming up in 1h to 5h 690 DEG C, and 0.5h to 4h is incubated after being warming up to 690 DEG C, the 4th, after annealing furnace is incubated 0.5h to 4h at a temperature of 690 DEG C, Annealing furnace is warming up to 710 DEG C to 730 DEG C in 1h to 5h, and 10h to 18h is incubated after being warming up to 710 DEG C to 730 DEG C, the 5th, annealing furnace is cooled down annealing furnace by the way of furnace cooling after insulation 10h to 18h at a temperature of 710 DEG C to 730 DEG C 4h to 8h, the 6th, after 4h to 8h is cooled down to annealing furnace by the way of furnace cooling, it is air-cooled to annealing furnace change cover, and The temperature of annealing furnace is down to 280 DEG C, the 7th, after the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by annealing furnace Temperature be down to 80 DEG C by 280 DEG C, it is last, come out of the stove, soft annealing roll bending is made；
Step 4: pickling, that by row device for hoisting soft annealing roll bending that soft annealing obtains is transported into pickling lines is enterprising Row pickling, and pickling roll bending is made；
Step 5: rolling, the pickling roll bending obtained after pickling is transported on production line of rolling mill by row device for hoisting rolled, And rolling roll bending is made；
Step 6: spheroidizing, the rolling roll bending obtained after rolling is transported in annealing furnace/ammonia destruction furnace by row device for hoisting Spheroidizing is carried out, is warming up to 400 DEG C at full speed first, by annealing furnace, and 1h to 5h is incubated after being warming up to 400 DEG C, secondly, is moved back Annealing furnace is warming up to 640 DEG C, and be warming up to 640 DEG C by stove after insulation 1h to 5h at a temperature of 400 DEG C in 1h to 6h 0.5h to 4h is incubated afterwards, and again, after annealing furnace is incubated 0.5h to 4h at a temperature of 640 DEG C, annealing furnace is risen in 1h to 5h Temperature to 730 DEG C, and after being warming up to 730 DEG C be incubated 0.5h to 4h, the 4th, annealing furnace be incubated 0.5h extremely at a temperature of 730 DEG C After 4h, annealing furnace is warming up to 740 DEG C to 760 DEG C in 0.5h to 2h, and 10h is incubated extremely after being warming up to 740 DEG C to 760 DEG C 16h, the 5th, after annealing furnace is incubated 10h to 16h at a temperature of 740 DEG C to 760 DEG C, will annealing by the way of furnace cooling The temperature of stove is down to 550 DEG C to 600 DEG C, and the 6th, the temperature of annealing furnace is being down to 550 DEG C extremely 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, the 7th, the temperature of annealing furnace is down to After 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, come out of the stove, spheroidizing volume is made Plate；
Step 7: finish rolling, the spheroidizing roll bending obtained after spheroidizing being transported to by row device for hoisting and rolled on production line Finish rolling is carried out, and finish rolling roll bending is made；
Step 8: second of longitudinal shearing slitting, that by row device for hoisting finish rolling roll bending that finish rolling obtains is transported into small banding machine is enterprising Second of longitudinal shearing slitting of row, and slitting roll bending is made；
Step 9: packaging and storage, using baling press carrying out packing packaging to the slitting roll bending obtained by after second of longitudinal shearing slitting.
2. the processing technology of a kind of strip according to claim 1, it is characterised in that in the step 3, moved back in softening When fiery, annealing furnace is warming up to 400 DEG C at full speed, and 1.5h to 3h is incubated after being warming up to 400 DEG C；Temperature of the annealing furnace at 400 DEG C After the lower insulation 1.5h to 3h of degree, annealing furnace is warming up to 600 DEG C in 2h to 4h, and 0.6h is incubated extremely after being warming up to 600 DEG C 2h；Annealing furnace is warming up to 690 DEG C, and rising by annealing furnace after insulation 0.6h to 2h at a temperature of 600 DEG C in 1.5h to 3h 0.6h to 2h is incubated after warm to 690 DEG C；After annealing furnace is incubated 0.6h to 2h at a temperature of 690 DEG C, by annealing furnace in 1.5h extremely 710 DEG C to 730 DEG C are warming up in 3h, and 11h to 16h is incubated after being warming up to 710 DEG C to 730 DEG C；Annealing furnace at 710 DEG C extremely After being incubated 11h to 16h at a temperature of 730 DEG C, annealing furnace is cooled down into 4.5h to 7.2h by the way of furnace cooling.
3. the processing technology of a kind of strip according to claim 2, it is characterised in that in soft annealing, by annealing furnace 400 DEG C are warming up at full speed, and 1.8h to 2.4h is incubated after being warming up to 400 DEG C；Annealing furnace is incubated 1.8h at a temperature of 400 DEG C To 2.4h, annealing furnace is warming up to 600 DEG C in 2.8h to 3.4h, and 0.8h to 1.2h is incubated after being warming up to 600 DEG C；Move back Annealing furnace is warming up to 690 DEG C, and rising by stove after insulation 0.8h to 1.2h at a temperature of 600 DEG C in 1.8h to 2.4h 0.8h to 1.2h is incubated after warm to 690 DEG C；Annealing furnace exists annealing furnace after insulation 0.8h to 1.2h at a temperature of 690 DEG C 710 DEG C to 730 DEG C are warming up in 1.8h to 2.4h, and 11.2h to 15.6h is incubated after being warming up to 710 DEG C to 730 DEG C；Annealing Annealing furnace is cooled down 5.2h by stove after insulation 11.2h to 15.6h at a temperature of 710 DEG C to 730 DEG C by the way of furnace cooling To 6.4h.
4. according to a kind of processing technology of any described strip in claim 1 to 2, it is characterised in that in soft annealing, Need to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；In whole heating and insulating process, actual temperature The difference of angle value and process warm angle value is less than 15 DEG C.
5. the processing technology of a kind of strip according to claim 1, it is characterised in that in the step 4, carrying out acid Before washing, the Oxygen potential of soft annealing roll bending need to be detected first with metallographic microscope, and qualified soft annealing will be detected Roll bending is put on pickling lines.
6. the processing technology of a kind of strip according to claim 1, it is characterised in that carrying out pickling in the step 4 When, the minus tolerance of the thickness before and after soft annealing roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two, the quantity of deactivation slot For one, the quantity of neutralization chamber is one, and the pickling concentration of two descaling baths is respectively 18% to 22%, 15% to 18%, two Sour position in individual 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 groove 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。
7. the processing technology of a kind of strip according to claim 1, it is characterised in that in the step 6, moved back in nodularization When fiery, annealing furnace is warming up to 400 DEG C at full speed, and 1.5h to 3h is incubated after being warming up to 400 DEG C；Temperature of the annealing furnace at 400 DEG C After the lower insulation 1.5h to 3h of degree, annealing furnace is warming up to 640 DEG C in 2h to 4h, and 0.6h is incubated extremely after being warming up to 640 DEG C 2h；Annealing furnace is warming up to 730 DEG C, and rising by annealing furnace after insulation 0.6h to 2h at a temperature of 640 DEG C in 1.5h to 3h 0.6h to 2h is incubated after warm to 730 DEG C；After annealing furnace is incubated 0.6h to 2h at a temperature of 730 DEG C, by annealing furnace in 0.5h extremely 740 DEG C to 760 DEG C are warming up in 1.8h, and 11h to 14h is incubated after being warming up to 740 DEG C to 760 DEG C.
8. the processing technology of a kind of strip according to claim 7, it is characterised in that in spheroidizing, by annealing furnace 400 DEG C are warming up at full speed, and 1.8h to 2.4h is incubated after being warming up to 400 DEG C；Annealing furnace is incubated 1.8h at a temperature of 400 DEG C To 2.4h, annealing furnace is warming up to 640 DEG C in 2.5h to 3.2h, and 0.6h to 1.2h is incubated after being warming up to 640 DEG C；Move back Annealing furnace is warming up to 730 DEG C, and rising by stove after insulation 0.6h to 1.2h at a temperature of 640 DEG C in 1.8h to 2.4h 0.6h to 1.2h is incubated after warm to 730 DEG C；Annealing furnace exists annealing furnace after insulation 0.6h to 1.2h at a temperature of 730 DEG C 740 DEG C to 760 DEG C are warming up in 0.6h to 1.2h, and 12h to 13.5h is incubated after being warming up to 740 DEG C to 760 DEG C.
9. the processing technology of a kind of strip according to claim 1 or 7 or 8, it is characterised in that in spheroidizing, entering Need to do detonation experiment before row heating, it is ensured that the purity of hydrogen in ammonia destruction furnace；In whole heating and insulating process, actual temperature The difference of value and process warm angle value is less than 15 DEG C.
10. the processing technology of a kind of strip according to claim 1, it is characterised in that in the step 8, carrying out the Before secondary longitudinal shearing slitting, the hardness of finish rolling roll bending need to be detected first with universal testing machine and hardometer, and finish rolling is rolled up The acceptability limit of the hardness number of plate is 75HRB to 85HRB；The finish rolling roll bending qualified to hardness number carries out metallographic detection, by metallographic Also qualified finish rolling roll bending is detected to put on small banding machine.
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