CN106111699B - A kind of processing method for inhibiting edge crack during fragile material rolling - Google Patents
A kind of processing method for inhibiting edge crack during fragile material rolling Download PDFInfo
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- CN106111699B CN106111699B CN201610487428.2A CN201610487428A CN106111699B CN 106111699 B CN106111699 B CN 106111699B CN 201610487428 A CN201610487428 A CN 201610487428A CN 106111699 B CN106111699 B CN 106111699B
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- 239000000463 material Substances 0.000 title claims abstract description 107
- 238000005096 rolling process Methods 0.000 title claims abstract description 56
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 7
- 229910000806 Latten Inorganic materials 0.000 claims abstract description 41
- 238000003466 welding Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005336 cracking Methods 0.000 claims abstract description 13
- 238000005097 cold rolling Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 238000003801 milling Methods 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 12
- 230000006698 induction Effects 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910017372 Fe3Al Inorganic materials 0.000 description 2
- 229910001005 Ni3Al Inorganic materials 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910021330 Ti3Al Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
Abstract
The present invention provides a kind of processing method for inhibiting edge crack when fragile material rolls, technological process is：The both sides of fragile material latten are connected with the material with some strength and plasticity, to strengthen the plastic working ability of edge, warm-rolling is carried out to composite plate first with milling train, then carries out cold rolling at room temperature, the final surface quality that obtains is good, no edge cracking phenomena latten.The present invention welds the technology of plastic material using edge, the edge that cracking is also easy to produce to fragile material is strengthened, when overcoming fragile material difficulty cold rolling the problem of edge crack, the perfect sunken and good fragile material latten of surface quality is obtained, the technology of the plastic material of edge welding simultaneously improves the lumber recovery of fragile material latten production, also considerably reduces the possibility of the broken belt casualty accident generation caused by edge crack problem during continuous production.
Description
Technical field
The present invention relates to technical field of metal material preparation, more particularly to one kind can inhibit edge during fragile material rolling
The processing method of cracking.
Background technology
It is to destroy the material being broken to be referred to as brittleness (such as to stretch, impact) under external force and only generate deforming for very little
Material.Include Ti in the typical fragile material of metal material field3Al based alloys, TiAl-base alloy, Ti2AlNb based alloys,
Ni3Al based alloys, Fe3Al based alloys and Fe-6.5wt.%Si high silicon steel.
Ti3Al based alloys, TiAl-base alloy and Ti2AlNb based alloys have low-density (3.8~5.8g/cm3), high temperature
The advantages that high intensity, high stiffness and excellent anti-oxidant, creep resistant, structural member loss of weight 35~50% can be made.Ni3Al bases close
Gold, MX-246 have good corrosion-resistant, wear-resistant and cavitation erosion resistance energy, show fabulous application prospect.Fe3Al based alloys
With good anti-oxidant and wear-corrosion resistance, there is higher-strength in medium temperature (being less than 600 DEG C), it is at low cost, it is that one kind can portion
Divide the new material of substitution stainless steel.Fe-6.5wt.%Si high silicon steel has very excellent soft magnet performance, for improving electric appliance effect
Rate energy saving has very important significance.
Fragile material always exists many difficulties in terms of mechanical processing, and fragile material when being rolled because itself is moulded
Property is poor to cause the cracking phenomenon of edge to be wherein prominent one.
Steel edge portion cracking (splitting on abbreviation side) is the problem of often meeting in cold-rolled process.Strip edge, which is split, directly results in band
The decline of steel quality of edges reduces the lumber recovery of steel, causes the huge wasting of resources, and serious or even can trigger disconnected
Band accident；Cold rolling is usually what is carried out under the tension for bearing tens of tons and hundreds of meters per minute of high-speed working condition, and broken belt causes
Enormous impact production equipment can be made badly damaged, reduced so as to cause production efficiency, cause to be difficult to the tremendous economic estimated damage
It loses.
There are many influence factor of cold rolling edge crack, and from steel-making to hot rolling again to cold rolling process, coverage is wider, but from
The angle analysis of cold rolling mill, cause cold rolling while damage while split defect the reason for can be divided into two kinds:Cold-rolled substrate quality problems and cold rolling
Process control issues and cold-rolled substrate quality problems include cold-rolled substrate edge fault and cold-rolled substrate edging tissue is uneven etc..
This invention address that plastic material is welded come to fragile material edge row guarantor by carrying out edge to high silicon plate
It protects and then inhibits the generation of the edge crack phenomenon in the fragile material operation of rolling, improve fragile material roll forming lumber recovery,
Promote the process of fragile material continuous production.It has not yet to see and inhibits fragile material edge crack behavior using edge welding
Report.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide sides in a kind of inhibition fragile material operation of rolling
The method of portion's cracking phenomena, the method that plastic material is welded by edge can effectively inhibit edge crack phenomenon, improve brittleness
Material roll forming lumber recovery, and the latten of the good edge flawless of surface quality is finally made.
A kind of method of edge crack behavior of inhibition fragile material in cold-rolled process, it is characterised in that technological process
For：The both sides of fragile material latten with the material with some strength and plasticity are connected, are added with the plasticity for strengthening edge
Work ability carries out warm-rolling to composite plate first with milling train, then carries out cold rolling at room temperature, and the final surface quality that obtains is good, nothing
Edge crack phenomenon latten；
Specific process step is as follows：
(1) pre-process：Fragile material latten is subjected to smooth, pickling at a certain temperature, to latten edge,
After plastic material edge is polished using grinding machine, the identical edge Rankine of prefabricated thickness is welded on latten both sides
Material obtains composite sheet, processing cutting edge strengthening material to one fixed width；
Edge plastic material：
Prefabricated edge plastic material be and fragile material latten thickness similar in plastic material thin plate.
Edge plastic material will meet three conditions in selection：
A) there is good plasticity, individually rolled under same process, it is boundless to split generation,
B) carbon equivalent is less than 0.62%, weld seam flawless good with fragile material weldability,
C) difference of elongation is exhausted after elongation is rolled with fragile material after plastic material rolls under same rolling condition
80% is less than to value；
(3) connect：Edge plastic material is attached with fragile material by the way of argon arc welding or laser welding, for
Brittle alloy and edge plastic material select suitable welding procedure；
(4) wire cutting：The width of edge plastic material should be controlled in 1-5mm；Wire cutting to cut at the striking of welding and
It receives at arc；
(5) roll：Roll is preheated before rolling, suitable warm-rolling temperature and temperature are then selected according to the difference of fragile material
It rolls rate and warm-rolling reduction in pass also has room temperature rolling rate, suitable rolling pass is selected according to required thickness；Alloy is thin
Plate is rolled to required thickness through room temperature repeat-rolling；
(6) the good fragile material flat cold-rolled sheet of the surface quality without edge cracking phenomena of 0.04-0.5mm thickness is obtained.
The thickness of fragile material latten wherein described in step (1) is 0.5mm-1mm, and smooth temperature is 500-1000
℃。
Plastic material thin plate described in step (2) is no more than 40% with fragile material latten thickness difference, plastic material
Web width is 40-70mm；The carbon equivalent of plastic material thin plate is less than 0.62%.
Preheating temperature is 30-100 DEG C before rolling described in step (5), and warm-rolling temperature is 50-400 DEG C, warm-rolling rate 20-
40m/min, warm-rolling reduction in pass are 20-50%, and suitable rolling pass is selected according to required thickness；Room temperature rolling rate is
20-40m/min。
The advantage of the invention is that：The technology of plastic material is welded using edge, the side of cracking is also easy to produce to fragile material
Portion is strengthened, and when overcoming fragile material difficulty cold rolling the problem of edge crack, it is good to have obtained perfect sunken and surface quality
Good fragile material latten, at the same the technology of edge welding plastic material improve the production of fragile material latten into
Material rate, also considerably reduce that the broken belt casualty accident caused by edge crack problem during continuous production occurs can
It can property.
Description of the drawings
Fig. 1 show edge welding and prepares thin strip cold process route chart.
Fig. 2 show the Fe-6.5wt.%Si high silicon steel and 304 stainless steel welded composite members of the preparation of the embodiment of the present invention one
The microstructure of weld seam.
Fig. 3 show the Fe-6.5wt.%Si high silicon steel and 304 stainless steel welded composite members of the preparation of the embodiment of the present invention one
The scanning electron microscope backscattered electron image of weld seam.
Fig. 4 show the 0.06mm thickness Fe-6.5wt.%Si high silicon steel flat cold-rolled sheet weld seams of the preparation of the embodiment of the present invention one
The microstructure at place.
Specific embodiment
The specific embodiment of the invention is described in detail below in conjunction with specific attached drawing.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be mutually combined to reach
To superior technique effect.In the attached drawing of following embodiments, identical label that each attached drawing occurs represent identical feature or
Person's component can be applied in different embodiments.
Embodiment one
(1) pre-process：The Fe-6.5wt.%Si high si fe alloy thin plates of 0.5mm thickness are put into the chamber type electric resistance furnace of temperature
In smooth fixture in, 850 DEG C of chamber type electric resistance furnace temperature, soaking time 5min then takes out, the stainless steel not heated with two pieces
Plate, which presses against, to be cooled down, and is cooled to room temperature, and pickling removal scale on surface is then carried out to latten；To latten side
Portion, plastic material edge are polished using grinding machine.
(2) plastic material selects 304 stainless steels.
(3) connect：The connection realized between Fe-6.5wt.%Si high silicon steel and 304 stainless steels is fetched using Laser Welding；It adopts
The grinded warm-rolling thin plate of the pickling is docked with plastic material with particular manufacturing craft；Laser welding using weld preheating and
Postheating, preheating temperature are 150 DEG C, and postwelding wraps up weldment using asbestos；Welding manner is using two-sided welding
The welding that test specimen carries out opposite side is overturn after completing one side welding, laser bonding power is 180W, speed of welding 30mm/s.
(4) cutting of composite plate is welded：The width of plastic material is 1mm；Wire cutting cut at the striking of laser welding and
It receives at arc.
(5) roll：Heating to roll and latten is realized using induction heating apparatus；Sensing heating is used before rolling
Roll is preheated to 50 DEG C, induction heating temperature is 150 DEG C, induction heating power 17.3KW；Warm-rolling rate 30m/min, temperature
It is 40% to roll reduction in pass, and latten thickness is in 0.15-0.25mm after twice warm-rolling；Room temperature rolling rate is 30m/
Min, latten obtain the good high silicon steel of the surface quality without edge cracking phenomena of 0.06mm thickness through room temperature repeat-rolling
Flat cold-rolled sheet.
Embodiment two
(1) pre-process：The Fe-6.5wt.%Si high si fe alloy thin plates of 0.5mm thickness are put into the chamber type electric resistance furnace of temperature
In smooth fixture in, 850 DEG C of chamber type electric resistance furnace temperature, soaking time 5min then takes out, the stainless steel not heated with two pieces
Plate, which presses against, to be cooled down, and is cooled to room temperature, and pickling removal scale on surface is then carried out to latten；To latten side
Portion, plastic material edge are polished using grinding machine.
(2) plastic material selects the non-oriented silicon steel sheet that the Baosteel trade mark is B50A470.
(3) connect：The non-oriented silicon steel sheet for realizing Fe-6.5wt.%Si high silicon steel and B50A470 is fetched using Laser Welding
Between connection；The grinded warm-rolling thin plate of the pickling is docked with plastic material using particular manufacturing craft；Laser welding
Using weld preheating and postheating, preheating temperature is 150 DEG C, and postwelding wraps up weldment using asbestos；Welding manner
It is the welding of overturning test specimen progress opposite side after the welding of completion one side using two-sided welding, laser bonding power is 180W, is welded
Speed is connect as 30mm/s.
(4) cutting of composite plate is welded：The width of plastic material is 1mm；Wire cutting cut at the striking of laser welding and
It receives at arc.
(5) roll：Heating to roll and latten is realized using induction heating apparatus；Sensing heating is used before rolling
Roll is preheated to 50 DEG C, induction heating temperature is 150 DEG C, induction heating power 17.3KW；Warm-rolling rate 30m/min, temperature
It is 40% to roll reduction in pass, and latten thickness is in 0.15-0.25mm after twice warm-rolling；Room temperature rolling rate is 30m/
Min, latten obtain the good high silicon steel of the surface quality without edge cracking phenomena of 0.06mm thickness through room temperature repeat-rolling
Flat cold-rolled sheet.
Embodiment three
(1) pre-process：The Fe-6.5wt.%Si high si fe alloy thin plates of 0.5mm thickness are put into the chamber type electric resistance furnace of temperature
In smooth fixture in, 850 DEG C of chamber type electric resistance furnace temperature, soaking time 5min then takes out, the stainless steel not heated with two pieces
Plate, which presses against, to be cooled down, and is cooled to room temperature, and pickling removal scale on surface is then carried out to latten；To latten side
Portion, plastic material edge are polished using grinding machine.
(2) plastic material selects the non-oriented silicon steel sheet that the Baosteel trade mark is B50A800.
(3) connect：The non-oriented silicon steel sheet for realizing Fe-6.5wt.%Si high silicon steel and B50A800 is fetched using Laser Welding
Connection；The grinded warm-rolling thin plate of the pickling is docked with plastic material using particular manufacturing craft；Laser welding uses
Weld preheating and postheating, preheating temperature are 150 DEG C, and postwelding wraps up weldment using asbestos；Welding manner uses
Two-sided welding is to complete to overturn the welding that test specimen carries out opposite side after one side is welded, and laser bonding power is 180W, and welding is fast
It spends for 30mm/s.
(4) cutting of composite plate is welded：The width of plastic material is 1mm；Wire cutting cut at the striking of laser welding and
It receives at arc.
(5) roll：Heating to roll and latten is realized using induction heating apparatus；Sensing heating is used before rolling
Roll is preheated to 50 DEG C, induction heating temperature is 150 DEG C, induction heating power 17.3KW；Warm-rolling rate 30m/min, temperature
It is 40% to roll reduction in pass, and latten thickness is in 0.15-0.25mm after twice warm-rolling；Room temperature rolling rate is 30m/
Min, latten obtain the good high silicon steel of the surface quality without edge cracking phenomena of 0.06mm thickness through room temperature repeat-rolling
Flat cold-rolled sheet.
Beneficial effects of the present invention are：Using the technology of edge welding plastic material, edge is also easy to produce to fragile material and is opened
The edge split is protected, and when overcoming fragile material difficulty cold rolling the problem of edge crack, has obtained perfect sunken and surface
The second best in quality fragile material latten, while the technology of edge welding plastic material improves the life of fragile material latten
The lumber recovery of production, the broken belt casualty accident caused by edge crack problem is sent out during also considerably reducing continuous production
Raw possibility.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (4)
1. a kind of processing method for inhibiting edge crack during fragile material rolling, which is characterized in that technological process is：By brittleness material
Expect that the both sides of latten are connected with the material with some strength and plasticity, to strengthen the plastic working ability of edge, first
Warm-rolling is carried out to composite plate using milling train, then carries out cold rolling at room temperature, it is final obtain surface quality it is good, without edge cracking phenomena
Latten；
Specific process step is as follows：
(1) pre-process：Fragile material latten is subjected to smooth, pickling at a certain temperature, to latten edge, plasticity
After material edge is polished using grinding machine, the identical edge strengthening material of prefabricated thickness is welded on latten both sides, is obtained
To composite sheet, processing cutting edge strengthening material to one fixed width；
(2) edge plastic material：
Prefabricated edge plastic material be and fragile material latten thickness similar in plastic material thin plate；
Edge plastic material will meet three conditions in selection：
A) there is good plasticity, individually rolled under same process, it is boundless to split generation,
B) carbon equivalent is less than 0.62%, weld seam flawless good with fragile material weldability,
C) absolute value of the difference of elongation after elongation is rolled with fragile material after plastic material rolls under same rolling condition
Less than 80%；
(3) connect：Edge plastic material is attached with fragile material by the way of argon arc welding or laser welding, for brittleness
Alloy and edge plastic material select suitable welding procedure；
(4) wire cutting：The width of edge plastic material should be controlled in 1-5mm；Wire cutting will cut at the striking of welding and receive arc
Place；
(5) roll：Roll is preheated before rolling, suitable warm-rolling temperature and warm-rolling speed are then selected according to the difference of fragile material
Rate and warm-rolling reduction in pass also have room temperature rolling rate, and suitable rolling pass is selected according to required thickness；Latten passes through
Room temperature repeat-rolling is rolled to required thickness；
(6) the good fragile material flat cold-rolled sheet of the surface quality without edge cracking phenomena of 0.04-0.5mm thickness is obtained.
A kind of 2. processing method for inhibiting edge crack during fragile material rolling according to claim 1, it is characterised in that step
Suddenly the thickness of the fragile material latten described in (1) is 0.5mm-1mm, and smooth temperature is 500-1000 DEG C.
A kind of 3. processing method for inhibiting edge crack during fragile material rolling according to claim 1, it is characterised in that step
Suddenly the plastic material thin plate described in (2) is no more than 40% with fragile material latten thickness difference, and plastic material web width is
40-70mm；The carbon equivalent of plastic material thin plate is less than 0.62%.
A kind of 4. processing method for inhibiting edge crack during fragile material rolling according to claim 1, it is characterised in that step
Suddenly preheating temperature is 30-100 DEG C before the rolling described in (5), and warm-rolling temperature is 50-400 DEG C, warm-rolling rate 20-40m/min, temperature
Reduction in pass is rolled for 20-50%, and suitable rolling pass is selected according to required thickness；Room temperature rolling rate is 20-40m/
min。
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| CN106702287B (en) * | 2016-12-13 | 2018-05-29 | 东北大学 | A kind of method for improving high boron stainless steel hot processing performance and temperature-room type plasticity |
| CN114453430A (en) * | 2022-01-20 | 2022-05-10 | 安阳钢铁股份有限公司 | Control method for preventing high magnetic induction oriented silicon steel cold rolling strip breakage |
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|---|---|---|---|---|
| JPH09256067A (en) * | 1996-03-19 | 1997-09-30 | Nisshin Steel Co Ltd | Production of steel sheet for heat treatment excellent in peeling resistance of scale |
| CN102071356A (en) * | 2010-12-22 | 2011-05-25 | 山西太钢不锈钢股份有限公司 | Method for preventing edge crack of low-carbon steel during rolling at high temperature |
| CN102240894A (en) * | 2011-06-01 | 2011-11-16 | 河北钢铁集团有限公司 | Composite manufacturing method of ultra-thick steel plate |
| CN103302097A (en) * | 2013-06-29 | 2013-09-18 | 济钢集团有限公司 | Method for rolling carbon steel and low alloy steel large-piece-weight extra thick composite blank |
| CN104985021A (en) * | 2015-07-29 | 2015-10-21 | 中冶南方(武汉)威仕工业炉有限公司 | Edge heating apparatus for preventing cracking of edges of band steel, and method thereof |
-
2016
- 2016-06-28 CN CN201610487428.2A patent/CN106111699B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09256067A (en) * | 1996-03-19 | 1997-09-30 | Nisshin Steel Co Ltd | Production of steel sheet for heat treatment excellent in peeling resistance of scale |
| CN102071356A (en) * | 2010-12-22 | 2011-05-25 | 山西太钢不锈钢股份有限公司 | Method for preventing edge crack of low-carbon steel during rolling at high temperature |
| CN102240894A (en) * | 2011-06-01 | 2011-11-16 | 河北钢铁集团有限公司 | Composite manufacturing method of ultra-thick steel plate |
| CN103302097A (en) * | 2013-06-29 | 2013-09-18 | 济钢集团有限公司 | Method for rolling carbon steel and low alloy steel large-piece-weight extra thick composite blank |
| CN104985021A (en) * | 2015-07-29 | 2015-10-21 | 中冶南方(武汉)威仕工业炉有限公司 | Edge heating apparatus for preventing cracking of edges of band steel, and method thereof |
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