CN103658230B - A kind of method being applied in hot-rolled steel production technology prevent strip edge from damaging and equipment thereof - Google Patents
A kind of method being applied in hot-rolled steel production technology prevent strip edge from damaging and equipment thereof Download PDFInfo
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- CN103658230B CN103658230B CN201310428866.8A CN201310428866A CN103658230B CN 103658230 B CN103658230 B CN 103658230B CN 201310428866 A CN201310428866 A CN 201310428866A CN 103658230 B CN103658230 B CN 103658230B
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Abstract
The invention discloses a kind of method being applied in hot-rolled steel production technology and preventing strip edge from damaging, guide and guard liner plate matrix is determined main abrasion region is as fricting working surface；The fatigue layer cut in described guide and guard liner plate matrix in key wear region by machining mode；On described guide and guard liner plate matrix, the region of cut fatigue layer, fills matrix cutting lay by the way of build-up wear-resistant alloy-layer；Mill unnecessary wear-resistant alloy layer by machining mode, form new guide and guard liner plate work surface.The present invention uses high rigidity, high-wearing feature work surface, and its more common work surface of wear grooves shape is the most straight, stable, regular, does not produce adhesion thing, can the most effectively prevent the generation of steel edge portion surface damage.Can keep longer simultaneously and use the time online, guide and guard symmetrical structure, can two-sided exchange use on guide and guards, saving spare part expense, economic and practical.
Description
Technical field
The invention belongs to the equipment in hot-rolled steel production technology and production method, specifically, design one
It is applied in hot-rolled steel production technology method and the equipment thereof preventing strip edge from damaging；Particularly one prevents hot rolling
The economical method of steel edge portion surface damage is produced before coiling machine.
Background technology
At present, in hot-rolled steel production technology, general hot-rolled coil station-service side is led device and is guided strip steel to enter into
Coiling machine.Due to the high-speed transfer of strip steel, affected by the heat radiation of steel plate simultaneously, caused guide and guard liner plate very
Quick-wearing, does not has good guide effect, affects the shaping of coil of strip strip steel, simultaneously because guide and guard liner plate
Unstable abrasion and form irregular groove and adhesion thing, belt steel surface two side areas will be caused damage,
I.e. belt steel surface both sides generation limit is damaged, and especially for mild steel series of products, limit is damaged and occurred at strip steel end to end, long
Degree is 10～20m.The hot rolled plate that there is edge damage can have a strong impact on user's use, if entering Cold-roller
Sequence, it is also possible to producing broken belt accident, therefore limit is damaged and strictly should be controlled in hot-rolled coil.
Chinese patent literature, Patent No. 200820010122.9, discloses a kind of anti-leukorrhagia stopping of hot tandem
The device that steel generation limit is damaged, this device uses guide wheel to guide, and the method for injection lubricating oil reduction friction simultaneously is come
Prevent the generation that limit is damaged.But there is also many technical problems, as opened less than guide and guard liner plate because of its guide wheel opening degree
Mouth degree 20～30mm, substantially strip steel is only guided by guide wheel, and is theoretically line between guide wheel and strip steel
Contact, contact area more former guide and guard liner plate is greatly reduced, and is unfavorable for carrying out Stress control, easily to strip steel side
Limit produces press-in, causes side the most concordant, and this apparatus structure is complicated simultaneously, considerably increases plant maintenance
Workload.
Chinese patent literature, Patent No. 201120059865.7, disclose one and prevent steel edge portion from damaging
Flipper guide, this flipper guide proposes to increase in advance guide groove in foreplate and guides the method for strip steel abrasion to prevent
Only limit is damaged.But the prior art equally exists many technical problems, as it is when side is led, due to depositing of guide groove
, by clamping force effect so that strip steel particularly thin plate series products produces edge deformation, scroll is produced not
The impact of profit.And the method unresolved must be produced by wear and tear irregular groove and adhesion thing of foreplate so that
The phenomenon of edge surface damage is the most unresolved.
Summary of the invention
The technical problem to be solved is, owing to the instability of guide and guard liner plate is worn and torn in prior art
Form irregular groove and adhesion thing, belt steel surface two side areas will be caused damage, i.e. belt steel surface two
Generation limit, side is damaged；Easily strip steel side being produced press-in, cause side the most concordant, this apparatus structure is multiple simultaneously
Miscellaneous, considerably increase the workload of plant maintenance；Due to the existence of guide groove, by clamping force effect so that band
Steel particularly thin plate series products produces edge deformation, to technical problems such as scroll have adverse effect on, and carries
A kind of method being applied in hot-rolled steel production technology prevent strip edge from damaging and equipment thereof are supplied.
The technology design of the present invention is, for solving in above-mentioned prior art due to the abrasion of guide and guard liner plate instability
Form irregular groove and adhesion thing, cause the technical problems such as generation limit, belt steel surface both sides damage, the present invention
Technology design be, design a kind of can formation rule wear grooves, and the guide and guard work surface not producing adhesion thing supplies
Strip steel carries out side leads, it is desirable to this work surface has high rigidity under the high temperature conditions, and high-wearing feature, to ensure not
Producing adhesion thing and form relatively regular wear grooves, keeping simple in construction simultaneously, economic and practical prevents strip steel
The method that limit is damaged.
Technical scheme provided by the present invention is, one is applied in hot-rolled steel production technology prevent strip edge from damaging
Method, step 1, guide and guard liner plate matrix is determined main abrasion region is as fricting working surface；Step
2, the fatigue layer cut in described guide and guard liner plate matrix in key wear region by machining mode；Step 3,
On described guide and guard liner plate matrix, the region of cut fatigue layer, fills by the way of build-up wear-resistant alloy-layer
Matrix is cut region；Step 4, mills unnecessary wear-resistant alloy layer by machining mode, forms new leading
Defend liner plate work surface.
Described liner plate matrix selects cast steel or straight carbon steel.
The described degree of depth degree of depth more than described fatigue layer being cut region, cutting depth is to be slightly deeper than cutting table
On the basis of face is smooth.
Described build-up wear-resistant alloy-layer, selects Fe-Cr-Mo-B surfacing welding, and described surfacing welding is graphite mould
Surfacing welding, deposited metal is molybdenum chromium-boron alloy, and surfacing hardness is HRC=60～65, and matrix is Cr7Mo6B8
Dispersion hardening Strengthening and Toughening austenite, deposited metal is cocrystallizing type or nearly cocrystallizing type alloy.
Described surfacing welding be resistant to 650 DEG C of high temperature, wearability is good, good toughness, crack resistance are good welding rod.
Described guide and guard liner plate uses full symmetric structure, every block of guide and guard liner plate two-sided exchange to use, can be effective
Reduce equipment maintenance cost.
If described guide and guard liner plate one surface wear groove reaches 6mm, the guide and guard liner plate of both sides can be exchanged and continue to make
With.
A kind of equipment being applied in hot-rolled steel production technology prevent strip edge from damaging, including guide and guard liner plate, described
Guide and guard wear liner region is provided with wear-resistant alloy layer, and the thickness of described wear-resistant alloy layer is more than the thickness of fatigue layer.
Described wear-resistant alloy layer is cocrystallizing type or nearly cocrystallizing type alloy, and metallic taste molybdenum chromium-boron alloy, hardness is
HRC=60～65, matrix is Cr7Mo6B8 dispersion hardening Strengthening and Toughening austenite.
Use technical scheme provided by the present invention, it is possible to effectively solve in prior art due to guide and guard liner plate
Instability is worn and torn and is formed irregular groove and adhesion thing, belt steel surface two side areas will be caused damage,
I.e. belt steel surface both sides generation limit is damaged；Easily strip steel side is produced press-in, cause side the most concordant, simultaneously
This apparatus structure is complicated, considerably increases the workload of plant maintenance；Due to the existence of guide groove, by clamping force
Effect so that strip steel particularly thin plate series products produces edge deformation, to skills such as scroll have adverse effect on
Art problem, meanwhile, the present invention uses high rigidity, high-wearing feature work surface, its wear grooves shape relatively unskilled labor
Make face the most straight, stable, regular, do not produce adhesion thing, can the most effectively prevent steel edge portion surface
The generation of damage.Can keep longer simultaneously and use the time online, guide and guard liner plate uses the time than former material online
Matter liner plate improves 4 times, guide and guard symmetrical structure, two-sided exchange can use on guide and guards, saves spare part
Expense, economic and practical.
Accompanying drawing explanation
In conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is guide and guard lining plate structure schematic diagram of the present invention；
Fig. 2 is Figure 1A-A cross-sectional view；
Fig. 3 is guide and guard liner plate operating diagram of the present invention；
Wherein, 1 is guide and guard liner plate；2 is matrix；3 is wear-resistant alloy layer.
Detailed description of the invention
In conjunction with accompanying drawing 1-3, technical scheme provided by the present invention is, one is applied in hot-rolled steel production technology
Prevent the method that strip edge damages, step 1, guide and guard liner plate 1 matrix 2 is determined main abrasion region conduct
Fricting working surface；Step 2, cuts key wear district in described guide and guard liner plate 1 matrix 2 by machining mode
Fatigue layer in territory；Step 3, on described guide and guard liner plate 1 matrix 2, the region of cut fatigue layer, passes through
The mode of build-up wear-resistant alloy-layer 3 is filled matrix 2 and is cut region；Step 4, is milled by machining mode
Unnecessary wear-resistant alloy layer 3, forms new guide and guard liner plate 1 work surface.Described liner plate matrix 2 select cast steel or
Straight carbon steel.The described degree of depth degree of depth more than described fatigue layer being cut region, cutting depth is cut to be slightly deeper than
On the basis of cutting surfacing.Described build-up wear-resistant alloy-layer 3, selects Fe-Cr-Mo-B surfacing welding, described
Surfacing welding is graphite mould surfacing welding, and deposited metal is molybdenum chromium-boron alloy, and surfacing hardness is HRC=60～65,
Matrix 2 is Cr7Mo6B8 dispersion hardening Strengthening and Toughening austenite, and deposited metal is cocrystallizing type or nearly cocrystallizing type alloy.
Described surfacing welding be resistant to 650 DEG C of high temperature, wearability is good, good toughness, crack resistance are good welding rod.Described
Guide and guard liner plate 1 uses full symmetric structure, and every block of guide and guard liner plate 1 can use in two-sided exchange, can effectively reduce
Equipment maintenance cost.If described guide and guard liner plate 1 one surface wear groove reaches 6mm, can be by the guide and guard liner plate of both sides
1 exchange is continuing with.
A kind of equipment being applied in hot-rolled steel production technology prevent strip edge from damaging, including guide and guard liner plate 1, described
Guide and guard liner plate 1 eroded area is provided with wear-resistant alloy layer 3, and the thickness of described wear-resistant alloy layer 3 is more than fatigue layer
Thickness.Described wear-resistant alloy layer 3 is cocrystallizing type or nearly cocrystallizing type alloy, metallic taste molybdenum chromium-boron alloy, firmly
Degree is HRC=60～65, and matrix 2 is Cr7Mo6B8 dispersion hardening Strengthening and Toughening austenite.
The technical solution adopted in the present invention is: with a kind of energy formation rule wear grooves, and do not produce adhesion thing
Guide and guard work surface carry out side lead for strip steel, it is desirable to this work surface has high rigidity under the high temperature conditions, high resistance to
Mill property, to ensure do not produce adhesion thing and form relatively regular wear grooves, keeps simple in construction simultaneously, economical
It is suitable for.
The step that this method is implemented is: determine main abrasion region conduct in guide and guard liner plate 1 matrix 2
Fricting working surface.By the fatigue layer in key wear region in machining excision matrix 2, with build-up wear-resistant
The mode of alloy-layer 3 fills matrix 2, and finally machining mills unnecessary wear-resistant alloy layer 3, forms new leading
Defend work surface.Liner plate matrix 2 can be selected for cast steel or straight carbon steel part.Select wear-resistant alloy layer 3, can be selected for
Fe-Cr-Mo-B surfacing welding, this surfacing welding is the surfacing welding of graphite mould, and deposited metal is that molybdenum chromium boron closes
Gold, surfacing hardness is HRC=60～65, and matrix 2 is Cr7Mo6B8 dispersion hardening Strengthening and Toughening austenite, heap
Weldering metal is cocrystallizing type or nearly cocrystallizing type alloy, this welding rod is the most high temperature resistant (up to 650 DEG C) and also wear-resisting
Property, toughness, crack resistance is fine.Guide and guard liner plate 1 uses full symmetric structure, every piece of guide and guard two-sided to exchange
Use, can effectively reduce equipment maintenance cost.By wear-resistant alloy layer 3 as abrasion work surface, add base
The resistance to impact of body 2, can obtain good wearability and impact resistance.The program combines firm, system
Make technique simple, it is easy to field repair.
The implementation result of the present invention:
The present invention before hot continuous rolling production line coiling machine guide and guard test, test result indicate that, use height
Hardness, high-wearing feature work surface, its more common work surface of wear grooves shape is the most straight, stable, regular,
Do not produce adhesion thing, can the most effectively prevent the generation of steel edge portion surface damage.Can keep longer simultaneously
Use the time online, guide and guard liner plate 1 uses the time to improve 4 times than original material liner plate online, guide and guard pair
Claim structure, can two-sided exchange use on guide and guards, save spare part expense, economic and practical.
As it can be seen, according to the actual wear situation of matrix 2 liner plate, determine in guide and guard liner plate 1 matrix 2
Go out main abrasion region.According to accompanying drawing 1 by the fatigue in key wear region in machining excision matrix 2
Layer, cutting depth by be slightly deeper than cutting surface smooth on the basis of.According to accompanying drawing 2 with build-up wear-resistant alloy-layer 3
Mode fill matrix 2 cutting lay, finally machining mills unnecessary wear-resistant alloy layer 3, is formed new high hard
Degree high abrasion work surface.If a surface wear groove reaches 6mm, the foreplate of both sides can be exchanged and be continuing with.
This example in detail use high-hardness, wearable work surface as the method for strip steel spigot surface, from root
Solve steel edge portion surface damage phenomenon on Ben, huge economic benefit can be produced for hot-rolled coil factory.
Claims (3)
1. the method being applied in hot-rolled steel production technology prevent strip edge from damaging, it is characterised in that
Step 1, determines that on guide and guard liner plate (1) matrix (2) main abrasion region is as friction
Work surface；Cast steel or straight carbon steel are selected in guide and guard liner plate matrix (2)；
Step 2, is cut in described guide and guard liner plate (1) matrix (2) by machining mode and mainly grinds
Damage the fatigue layer in region；It is cut the degree of depth degree of depth more than described fatigue layer in region, cutting
The degree of depth by be slightly deeper than cutting surface smooth on the basis of；
Step 3, in the region of the upper cut fatigue layer of described guide and guard liner plate (1) matrix (2), logical
Cross the mode of build-up wear-resistant alloy-layer (3) to fill matrix (2) and be cut region；Described built-up welding
Wear-resistant alloy layer (3), selects Fe-Cr-Mo-B surfacing welding, and described surfacing welding is stone
Ink type surfacing welding, deposited metal is molybdenum chromium-boron alloy, and surfacing hardness is HRC=60～65,
Matrix (2) is Cr7Mo6B8Dispersion hardening Strengthening and Toughening austenite, deposited metal is cocrystallizing type
Or nearly cocrystallizing type alloy；Described surfacing welding for be resistant to 650 DEG C of high temperature, wearability good,
The welding rod that good toughness, crack resistance are good；
Step 4, mills unnecessary wear-resistant alloy layer (3) by machining mode, forms new leading
Defend liner plate (1) work surface；Described guide and guard liner plate (1) uses full symmetric structure, leads for every piece
Defend liner plate (1) can two-sided exchange use, can effectively reduce equipment maintenance cost.
One the most according to claim 1 is applied in hot-rolled steel production technology prevent strip edge
Damage method, it is characterised in that described guide and guard liner plate (1) if a surface wear groove reaches 6mm,
The guide and guard liner plate (1) of both sides can be exchanged and be continuing with.
One the most according to claim 2 is applied in hot-rolled steel production technology prevent strip edge
The equipment of the method damaged, it is characterised in that include guide and guard liner plate (1), described guide and guard liner plate
(1) eroded area is provided with wear-resistant alloy layer (3), the thickness of described wear-resistant alloy layer (3)
Thickness more than fatigue layer；Described wear-resistant alloy layer (3) is cocrystallizing type or nearly cocrystallizing type alloy,
Metal is molybdenum chromium-boron alloy, and hardness is HRC=60～65, and matrix (2) is Cr7Mo6B8More
Dissipate hardening Strengthening and Toughening austenite；Described wear-resistant alloy layer (3) selects Fe-Cr-Mo-B built-up welding
Welding rod, described surfacing welding is graphite mould surfacing welding, and deposited metal is molybdenum chromium-boron alloy, heap
Layer hardness is HRC=60～65, and matrix (2) is Cr7Mo6B8Dispersion hardening Strengthening and Toughening
Austenite；Described surfacing welding for being resistant to that 650 DEG C of high temperature, wearability be good, good toughness, anti-
The welding rod that fragility is good.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310428866.8A CN103658230B (en) | 2013-09-18 | 2013-09-18 | A kind of method being applied in hot-rolled steel production technology prevent strip edge from damaging and equipment thereof |
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| CN201310428866.8A CN103658230B (en) | 2013-09-18 | 2013-09-18 | A kind of method being applied in hot-rolled steel production technology prevent strip edge from damaging and equipment thereof |
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| CN103658230B true CN103658230B (en) | 2016-12-07 |
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