CN106222653A - A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature - Google Patents
A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature Download PDFInfo
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- CN106222653A CN106222653A CN201610695817.4A CN201610695817A CN106222653A CN 106222653 A CN106222653 A CN 106222653A CN 201610695817 A CN201610695817 A CN 201610695817A CN 106222653 A CN106222653 A CN 106222653A
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- liner plate
- rolling mill
- wearing feature
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses the preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature.Comprise the steps that the processes such as liner plate matrix, liner plate matrix surface defat and activation, liner plate substrate preheating, flame spray welding, later stage process and Nitrizing Treatment obtain the rolling mill guiding liner plate of high-wearing feature.The rolling mill guiding liner plate of the high-wearing feature of the present invention carries out Nitrizing Treatment by after flame spray welding; liner plate in flame spray welding molding carries out surface carburization; the protective layer formed with nickel base self-fluxing alloy powder carries out nitridation reaction; aln layer is obtained by Nitrizing Treatment repeatedly; the molybdenum comprised in the bag sheath of this liner plate is as generating nitride element; also the fragility occurred when nitriding temperature as reduction, improves the wearability of liner plate.
Description
Technical field
The invention belongs to technical field of metal, particularly relate to the preparation of the rolling mill guiding liner plate of a kind of high-wearing feature
Method.
Background technology
Guide and guards is indispensable vitals in shape rolling mill, in order to make rolled piece according to the position specified, direction
Passing in and out pass exactly with required state, it is to avoid collaring, rolled piece is scraped to be cut and squeezes steel and ensures that workman and equipment are pacified
Entirely, guide and guards will be installed before and after roll.Guide and guards include foreplate, guide cage, fixed cross beam, conduit, twisting box,
Torsion roller and positive reverse repeater etc..
Guide plate is used for guiding rolled piece correctly to pass in and out pass, makes the rolled piece in the horizontal direction will not left and right deflection and twisted.Load
Guide plate at Kou claims entrance guide plate, and be contained in exit is referred to as delivery guide.Three-high mill needs lifting platform or turns over steel and lead
The devices such as plate and various special tilting gear, machine for moving steel, reverse repeater, positive repeater, vertical repeater.The effect of reverse repeater will keep flat
Ellipse, rhombus, rectangle rolled piece guide next frame, and overturn an angle of 90 degrees and make rolled piece found entrance square opening or edging pass for rolling.?
In the race groove of repeater, rolled piece can not be naturally completed above-mentioned rotary movement, it is necessary to by means of reversing conduit.
The effect of positive repeater is that by a rolling mill, the square rolled piece stood up is guided another rolling mill, and makes rolled piece natural
Entrance oval groove is put down at 45 degree of angles of upset, ground.The effect of vertical repeater is in same frame, is guided by the rolled piece of upper roll line
Lower roll line, and rolled piece is reversed 45 degree of angles.Some milling train producing skelp also uses vertical repeater, and this vertical repeater only rises leads
To effect, do not act the effect reversing rolled piece.
Summary of the invention
It is an object of the invention to provide the preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature, pass through flame spray welding
After carry out Nitrizing Treatment, the liner plate in flame spray welding molding carries out surface carburization, with nickel base self-fluxing alloy powder formed guarantor
Sheath carries out nitridation reaction, obtains aln layer by Nitrizing Treatment repeatedly.
The present invention is achieved by the following technical solutions:
The present invention is the preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature, comprises the steps:
Step one, liner plate matrix
Choose the liner plate that the 40Cr steel plate allowance of 2mm (bottom surface leave) is made, after conditioned process, by surface of steel plate
Roughing is to certain roughness；
Step 2, liner plate matrix surface defat and activation
The liner plate obtained in step one is put into alkali liquor cleans to remove the oils and fats on surface and slight corrosion, cleaned
Liner plate, after air-drying, uses blasting craft that surface of the work is carried out roughening treatment, and the surface making purified treatment cross more activates；
Step 3, liner plate substrate preheating
By weak for oxy-acetylene flame furnishing carburizing flame, it is desirable to P (O2) >=0.8MPa, P (C2H2) >=0.1MPa, by step 2
The liner plate obtained is preheated to suitable temperature ranges, and sprays the pre-protection powder of last layer suitable thickness the most equably to prevent lining
Plate surface oxidation；
Step 4, flame spray welding
The step spray fuse method liner plate to processing through step 3 is taked to carry out flame spray welding: liner plate is heated to pre-protection powder
When starting moistening, appearance " minute surface ", starting powder feeding surfacing, powder feeding operation is intermittent powder feeding；Concrete operations are: powder is uniform
Be sprayed on after regional area reaches predetermined thickness, be heated to melt to the alloy powder layer in this region with same flame, when " mirror occurs
Face " after reflective phenomenon, then spray gun is slowly moved to another region, and repeat said process, until surface of the work all covers spray
Layer reaches certain thickness；
Step 5, later stage process
After the liner plate Slow cooling with spray-welding coating step 4 obtained, spray-welding coating surface is carried out grinding process, so
After be finish-machined to specify after specification according to art work sheet by surfacing product, i.e. obtain milling train abrasion-proof backing block；
Step 6, Nitrizing Treatment
Liner plate, between 550～700 DEG C, is heated to 750～850 DEG C by nitriding temperature, is incubated after being cooled to nitriding temperature
0.5～3 hour, repeat 1-5 time.
Further, the rough machining method described in described step one can be sandblasting, machine cut or other roughening sides
Method；Wherein machine cut can be rough turn, plane and milling.
Further, the 40Cr steel plate preheating temperature described in described step 3 is 500 DEG C～600 DEG C.
Further, the pre-protection powder described in described step 3 is nickel base self-fluxing alloy powder, and its composition presses quality
As follows: C2.26～2.7%, Cr14～15%, Si 1.5～2.0%, Ti4.5～5.0%, Nb2.5～2.8%, Fe
≤ 10%, Mn≤0.1%, Mo1.5～1.8%, Al0.85～1.5%, surplus is Ni.
Further, the pre-protection powder layer thickness described in described step 3 is 0.3～0.5mm.
The method have the advantages that
The rolling mill guiding liner plate of the high-wearing feature of the present invention carries out Nitrizing Treatment by after flame spray welding, becomes at flame spray welding
The liner plate of type carries out surface carburization, and the protective layer formed with nickel base self-fluxing alloy powder carries out nitridation reaction, by repeatedly
Nitrizing Treatment obtains aln layer, and the molybdenum comprised in the bag sheath of this liner plate is as generating nitride element, also as reducing
The fragility occurred during nitriding temperature, improves the wearability of liner plate.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature, following steps:
Step one, liner plate matrix
Choose the liner plate that the 40Cr steel plate allowance of 2mm (bottom surface leave) is made, after conditioned process, by surface of steel plate
Roughing is to certain roughness；
Step 2, liner plate matrix surface defat and activation
The liner plate obtained in step one is put into alkali liquor cleans to remove the oils and fats on surface and slight corrosion, cleaned
Liner plate, after air-drying, uses blasting craft that surface of the work is carried out roughening treatment, and the surface making purified treatment cross more activates；
Step 3, liner plate substrate preheating
By weak for oxy-acetylene flame furnishing carburizing flame, it is desirable to P (O2) >=0.8MPa, P (C2H2) >=0.1MPa, by step 2
The liner plate obtained is preheated to suitable temperature ranges, and sprays the pre-protection powder of last layer suitable thickness the most equably to prevent lining
Plate surface oxidation；
Step 4, flame spray welding
The step spray fuse method liner plate to processing through step 3 is taked to carry out flame spray welding: liner plate is heated to pre-protection powder
When starting moistening, appearance " minute surface ", starting powder feeding surfacing, powder feeding operation is intermittent powder feeding；Concrete operations are: powder is uniform
Be sprayed on after regional area reaches predetermined thickness, be heated to melt to the alloy powder layer in this region with same flame, when " mirror occurs
Face " after reflective phenomenon, then spray gun is slowly moved to another region, and repeat said process, until surface of the work all covers spray
Layer reaches certain thickness；
Step 5, later stage process
After the liner plate Slow cooling with spray-welding coating step 4 obtained, spray-welding coating surface is carried out grinding process, so
After be finish-machined to specify after specification according to art work sheet by surfacing product, i.e. obtain milling train abrasion-proof backing block；
Step 6, Nitrizing Treatment
Liner plate, between 550～700 DEG C, is heated to 750～850 DEG C by nitriding temperature, is incubated after being cooled to nitriding temperature
0.5～3 hour, repeat 1-5 time.
Wherein, the rough machining method described in step one can be sandblasting, machine cut or other method of roughening；Wherein machine
Tool cutting can be rough turn, plane and milling.
Wherein, the 40Cr steel plate preheating temperature described in step 3 is 500 DEG C～600 DEG C.
Wherein, the pre-protection powder described in step 3 is nickel base self-fluxing alloy powder, and its composition presses percent mass hundred such as
Under: C2.26～2.7%, Cr14～15%, Si1.5～2.0%, Ti4.5～5.0%, Nb2.5～2.8%, Fe≤10%, Mn
≤ 0.1%, Mo1.5～1.8%, Al0.85～1.5%, surplus is Ni.
Wherein, the pre-protection powder layer thickness described in step 3 is 0.3～0.5mm.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or feature in conjunction with this embodiment or example description is contained at least one enforcement of the present invention
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (5)
1. the preparation method of the rolling mill guiding liner plate of a high-wearing feature, it is characterised in that comprise the steps:
Step one, liner plate matrix
Choose the liner plate that the 40Cr steel plate allowance of 2mm (bottom surface leave) is made, after conditioned process, surface of steel plate is slightly added
Work is to certain roughness；
Step 2, liner plate matrix surface defat and activation
The liner plate obtained in step one is put into oils and fats and slight corrosion, the liner plate cleaned cleaning to remove surface in alkali liquor
After air-drying, using blasting craft that surface of the work is carried out roughening treatment, the surface making purified treatment cross more activates；
Step 3, liner plate substrate preheating
By weak for oxy-acetylene flame furnishing carburizing flame, it is desirable to P (O2) >=0.8MPa, P (C2H2) >=0.1MPa, step 2 is obtained
Liner plate be preheated to suitable temperature ranges, and the pre-protection powder of spraying last layer suitable thickness the most equably is to prevent liner plate table
Face aoxidizes；
Step 4, flame spray welding
The step spray fuse method liner plate to processing through step 3 is taked to carry out flame spray welding: liner plate to be heated to pre-protection powder and starts
When moistening, appearance " minute surface ", starting powder feeding surfacing, powder feeding operation is intermittent powder feeding；Concrete operations are: sprayed equably by powder
After regional area reaches predetermined thickness, it is heated to melt to the alloy powder layer in this region with same flame, when occurring that " minute surface " is anti-
After optical phenomenon, then spray gun is slowly moved to another region, and repeat said process, until surface of the work all covers spray-welding coating and reaches
Certain thickness；
Step 5, later stage process
After the liner plate Slow cooling with spray-welding coating that step 4 is obtained, spray-welding coating surface is carried out grinding process, then will
After surfacing product is finish-machined to specify specification according to art work sheet, i.e. obtain milling train abrasion-proof backing block；
Step 6, Nitrizing Treatment
Liner plate, between 550～700 DEG C, is heated to 750～850 DEG C by nitriding temperature, be cooled to after nitriding temperature to be incubated 0.5～
3 hours, repeat 1-5 time.
The preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature the most according to claim 1, it is characterised in that described
Modifier treatment technique described in step one is quenching+high tempering；Wherein hardening heat scope is 810 DEG C ± 5 DEG C, cooling side
Formula is that oil is cold；Temperature is 520 DEG C ± 10 DEG C, and the type of cooling can be water-cooled, the cold or air cooling of oil.
The preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature the most according to claim 1, it is characterised in that described
40Cr steel plate preheating temperature described in step 3 is 500 DEG C～600 DEG C.
The preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature the most according to claim 1, it is characterised in that described
Pre-protection powder described in step 3 is nickel base self-fluxing alloy powder, and it is as follows that its composition presses percent mass hundred: C2.26～
2.7%, Cr14～15%, Si 1.5～2.0%, Ti4.5～5.0%, Nb2.5～2.8%, Fe≤10%, Mn≤0.1%,
Mo1.5～1.8%, Al0.85～1.5%, surplus is Ni.
The preparation method of the rolling mill guiding liner plate of a kind of high-wearing feature the most according to claim 1, it is characterised in that described
Pre-protection powder layer thickness described in step 3 is 0.3～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695817.4A CN106222653A (en) | 2016-08-19 | 2016-08-19 | A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695817.4A CN106222653A (en) | 2016-08-19 | 2016-08-19 | A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature |
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| CN106222653A true CN106222653A (en) | 2016-12-14 |
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| CN201610695817.4A Pending CN106222653A (en) | 2016-08-19 | 2016-08-19 | A kind of preparation method of the rolling mill guiding liner plate of high-wearing feature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624798A (en) * | 2018-05-14 | 2018-10-09 | 合肥东方节能科技股份有限公司 | A kind of rolling mill guiding liner plate of high-wearing feature |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306476A (en) * | 1992-04-30 | 1993-11-19 | Daido Steel Co Ltd | Surface coated material, surface coating treatment and valve for internal combustion engine |
| CN102308112A (en) * | 2009-02-09 | 2012-01-04 | 戴姆勒股份公司 | Method for producing a brake disc |
| CN103158292A (en) * | 2011-12-15 | 2013-06-19 | 陕西天元材料保护科技有限公司 | Wear resistant blade and processing method thereof |
| CN104988452A (en) * | 2015-06-02 | 2015-10-21 | 合肥东方节能科技股份有限公司 | Manufacturing method of wear-resisting lining plate for rolling mill inlet guide |
-
2016
- 2016-08-19 CN CN201610695817.4A patent/CN106222653A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306476A (en) * | 1992-04-30 | 1993-11-19 | Daido Steel Co Ltd | Surface coated material, surface coating treatment and valve for internal combustion engine |
| CN102308112A (en) * | 2009-02-09 | 2012-01-04 | 戴姆勒股份公司 | Method for producing a brake disc |
| CN103158292A (en) * | 2011-12-15 | 2013-06-19 | 陕西天元材料保护科技有限公司 | Wear resistant blade and processing method thereof |
| CN104988452A (en) * | 2015-06-02 | 2015-10-21 | 合肥东方节能科技股份有限公司 | Manufacturing method of wear-resisting lining plate for rolling mill inlet guide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624798A (en) * | 2018-05-14 | 2018-10-09 | 合肥东方节能科技股份有限公司 | A kind of rolling mill guiding liner plate of high-wearing feature |
| CN108624798B (en) * | 2018-05-14 | 2020-10-09 | 合肥东方节能科技股份有限公司 | High-wear-resistance rolling mill guide lining plate |
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Application publication date: 20161214 |