CN106086695A - A kind of for milling train high hardness wear-resisting guide and guard and preparation method thereof - Google Patents
A kind of for milling train high hardness wear-resisting guide and guard and preparation method thereof Download PDFInfo
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- CN106086695A CN106086695A CN201610695715.2A CN201610695715A CN106086695A CN 106086695 A CN106086695 A CN 106086695A CN 201610695715 A CN201610695715 A CN 201610695715A CN 106086695 A CN106086695 A CN 106086695A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Abstract
The invention discloses a kind of for milling train high hardness wear-resisting guide and guard and preparation method thereof.This Roll Collar prepared is made up of the chemical composition of following weight percents: C 1.7～2.4%；W 5.0～6.0%；V 1.8～2.5%；Cr 12.5.0～15.0%；B 0.2～0.5%；Mo 1.2～1.4%, Si 1.7～2.4%, RE 0.28～0.68%；Cu 0.05～0.15%；Ti 0.18～0.20%, surplus is Fe.The present invention is the guide and guard that main base is made by using 1Cr18Ni9Ti, WC powder and 1Cr18Mn8Ni5N, these guide and guard are made to have good toughness and higher endurance life, effectively raise the service life of these guide and guard, guide and guard surface carries out hard alloy coating sprayed coating, guide and guard surface is made to form the coating of one layer of rub resistance, to improve these guide and guard surface accuracy in use, improve product quality.
Description
Technical field
The invention belongs to rolling mill guiding technical field, particularly relate to a kind of for milling train high hardness wear-resisting guide and guard and
Preparation method.
Background technology
Guide wheel is the important spare part that consumption is bigger in hot rolled rod production line, is the crucial portion in steel rolling guide assembly
Part, the shadow land measure equal to fifteen mu in most parts of the Northeast the technical-economic indexes such as operating rate of rolling mill.The a lot of guide and guard part heat resistances used are not enough, occur that steel bonding etc. shows
As, also have some process conditions wearabilities, thermal fatigue property bad, have impact on service life and mill bar quality.
The physical essence of hardness abrasion is the fracture process of a kind of specific form, occurs at the top layer of wear-out part and Ya Biao
Layer.When considering hardness number, it is impossible to simply think that hardness more high-wearing feature is the best, its under various regimes hard to be taken into full account
Degree.Such as: the hardness changed due to Surface hardened layer or softening in work process；Surface is made owing to contacting with high temperature rolled piece
Temperature raises, and will consider temperature hardness.
Summary of the invention
It is an object of the invention to provide a kind of for milling train high hardness wear-resisting guide and guard and preparation method thereof, by using
1Cr18Ni9Ti, WC powder and 1Cr18Mn8Ni5N are the guide and guard that main base is made, and guide and guard surface carries out hard alloy coating
Sprayed coating so that guide and guard surface forms the coating of one layer of rub resistance, to improve these guide and guard surface accuracy in use, improves
Product quality.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of for milling train high hardness wear-resisting guide and guard, leads for milling train high hardness wear-resisting including one
Defend, it is characterised in that this Roll Collar prepared is made up of the chemical composition of following weight percents: C 1.7～2.4%；W 5.0
～6.0%；V1.8～2.5%；Cr12.5.0～15.0%；B 0.2～0.5%；Mo 1.2～1.4%, Si 1.7～
2.4%, RE 0.28～0.68%；Cu 0.05～0.15%；Ti 0.18～0.20%, surplus is Fe.
A kind of preparation method for milling train high hardness wear-resisting guide and guard, comprises the steps:
Step one, uses the 1Cr18Ni9Ti rustless steel waste material of mass percent 25.0-28.0%, 5.0-10.0%
1Cr18Mn8Ni5N rustless steel, the high carbon ferro-chrome of 3.0-5.0%, the nitrided ferro-chromium of 0.25-0.50%, the ferrosilicon of 1.2-1.6%,
The ferromanganese of 0.8-1.0%, the ferromanganese of 0.60-0.75%, the metallic aluminium of 0.55-0.70%, the VN alloy of 0.2-0.4%,
The ferrozirconium of 0.35-0.50%, the calcium-silicon of 0.6-0.8%, the ferro-boron of 0.5-0.8%, 0.25-0.28%WC powder and
The magnesium-rare earth dispensing of 0.15-0.30%, surplus is Fe；
Step 2, first by 1Cr18Ni9Ti rustless steel waste material, 1Cr18Mn8Ni5N rustless steel, the ferromanganese of 0.60-0.75%,
The nitrided ferro-chromium of the ferrozirconium of 0.35-0.50%, the VN alloy of 0.2-0.4% and 0.25-0.50% carries out Hybrid Heating fusing,
Add ferrosilicon and ferromanganese after molten steel is melting down, after 3～5 minutes, add nitrided ferro-chromium；
Step 3, then rises to 1680～1750 DEG C by liquid steel temperature, is sequentially added into metallic aluminium, calcium-silicon, and continuing will
Liquid steel temperature rises to 1760～1780 DEG C, and adds WC powder and ferrozirconium, comes out of the stove after being incubated 2～3 minutes；
Step 4, is crushed to the fritter that granularity is 8～12mm by magnesium-rare earth and ferro-boron, dries 2 through 180～220 DEG C
～after 4 hours, it is placed in bottom casting ladle, pour method molten steel is carried out compound modification treatment in bag；
Step 5, the molten steel after step 4 being processed uses the method cast guide and guard of cured mould essence casting, pouring molten steel temperature
1440～1460 DEG C, air cooling guide and guard of unpacking after pouring into a mould 1～2 hour, spruing, clear up undesirable root, overlap, burr；
Step 6, carries out hard alloy coating sprayed coating process by guide and guard surface.
Further, described step 6, guide and guard surface is carried out hard alloy coating sprayed coating process particular by electric arc
Spraying equipment is at one layer of RE-WC-steel composite coating of the uniform sprayed coating of Roll Collar body surface.
Further, chemical composition mass fraction %:60～65Cr of described high carbon ferro-chrome, 6.8～7.5C ,≤3.0Si,
≤ 0.05S ,≤0.06P, Fe surplus.
Further, chemical composition mass fraction %:60～65Cr of described nitrided ferro-chromium, 5.0～7.0N, C≤0.1,
Si≤1.5, S≤0.04, P≤0.03, Fe surplus.
Further, chemical composition mass fraction %:72～80Si of described ferrosilicon, 0.5～1.5Al ,≤0.05P ,≤
0.04S ,≤0.15C, Fe surplus.
Further, chemical composition mass fraction %:78～85Mn ,≤the 1.5C ,≤2.0Si of described ferromanganese ,≤
0.35P ,≤0.03S, Fe surplus.
Further, chemical composition mass fraction %:8.0～10.0RE of described magnesium-rare earth, Ce/RE >=46,8.0
～10.0Mg, 1.0～3.0Ca ,≤44.0Si ,≤2.0Mn ,≤1.0Ti ,≤1.2MgO, Fe surplus.
Further, chemical composition mass fraction %:66～72V of described VN alloy, 12～17N, P < 0.045, S <
0.045, C < 0.50, Fe surplus.
The method have the advantages that
1, the present invention is the guide and guard that main base is made by using 1Cr18Ni9Ti, WC powder and 1Cr18Mn8Ni5N,
Make these guide and guard have good toughness and higher endurance life, effectively raise the service life of these guide and guard.
2, the present invention is by the guide and guard table made for main base with 1Cr18Ni9Ti, WC powder and 1Cr18Mn8Ni5N
Face carries out hard alloy coating sprayed coating so that guide and guard surface forms the coating of one layer of rub resistance, is using improving these guide and guard
Surface accuracy in journey, improves product quality.
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.
Embodiment one
A kind of preparation method for milling train high hardness wear-resisting guide and guard, comprises the steps:
Step one, uses the 1Cr18Ni9Ti rustless steel waste material of mass percent 25.0%, the 1Cr18Mn8Ni5N of 5.0%
Rustless steel, the high carbon ferro-chrome of 3.0-5.0%, the nitrided ferro-chromium of 0.25-0.50%, the ferrosilicon of 1.2-1.6%, 0.8-1.0%
Ferromanganese, the ferromanganese of 0.60-0.75%, the metallic aluminium of 0.55-0.70%, the VN alloy of 0.2-0.4%, 0.35-0.50%
The rare earth magnesium of ferrozirconium, the calcium-silicon of 0.6-0.8%, the ferro-boron of 0.5-0.8%, 0.25%WC powder and 0.15-0.30% is closed
Gold dispensing, surplus is Fe；
Step 2, first by 1Cr18Ni9Ti rustless steel waste material, 1Cr18Mn8Ni5N rustless steel, the ferromanganese of 0.60-0.75%,
The nitrided ferro-chromium of the ferrozirconium of 0.35-0.50%, the VN alloy of 0.2-0.4% and 0.25-0.50% carries out Hybrid Heating fusing,
Add ferrosilicon and ferromanganese after molten steel is melting down, after 3～5 minutes, add nitrided ferro-chromium；
Step 3, then rises to 1680～1750 DEG C by liquid steel temperature, is sequentially added into metallic aluminium, calcium-silicon, and continuing will
Liquid steel temperature rises to 1760～1780 DEG C, and adds WC powder and ferrozirconium, comes out of the stove after being incubated 2～3 minutes；
Step 4, is crushed to the fritter that granularity is 8～12mm by magnesium-rare earth and ferro-boron, dries 2 through 180～220 DEG C
～after 4 hours, it is placed in bottom casting ladle, pour method molten steel is carried out compound modification treatment in bag；
Step 5, the molten steel after step 4 being processed uses the method cast guide and guard of cured mould essence casting, pouring molten steel temperature
1440～1460 DEG C, air cooling guide and guard of unpacking after pouring into a mould 1～2 hour, spruing, clear up undesirable root, overlap, burr；
Step 6, carries out hard alloy coating sprayed coating process by guide and guard surface.Guide and guard surface is carried out hard alloy coating
Sprayed coating processes particular by electric arc spraying equipment at one layer of RE-WC-steel composite coating of the uniform sprayed coating of Roll Collar body surface.
Use the guide and guard that the 1Cr18Ni9Ti of low content, WC powder and 1Cr18Mn8Ni5N make, the continuous survey of 5-7 days
In examination, under surface heat fatigue strength, surface damage occurs.
Embodiment two
A kind of preparation method for milling train high hardness wear-resisting guide and guard, comprises the steps:
Step one, use the 1Cr18Ni9Ti rustless steel waste material of mass percent 28.0%, 10.0%
1Cr18Mn8Ni5N rustless steel, the high carbon ferro-chrome of 3.0-5.0%, the nitrided ferro-chromium of 0.25-0.50%, the ferrosilicon of 1.2-1.6%,
The ferromanganese of 0.8-1.0%, the ferromanganese of 0.60-0.75%, the metallic aluminium of 0.55-0.70%, the VN alloy of 0.2-0.4%,
The ferrozirconium of 0.35-0.50%, the calcium-silicon of 0.6-0.8%, the ferro-boron of 0.5-0.8%, 0.28%WC powder and 0.15-
The magnesium-rare earth dispensing of 0.30%, surplus is Fe；
Step 2, first by 1Cr18Ni9Ti rustless steel waste material, 1Cr18Mn8Ni5N rustless steel, the ferromanganese of 0.60-0.75%,
The nitrided ferro-chromium of the ferrozirconium of 0.35-0.50%, the VN alloy of 0.2-0.4% and 0.25-0.50% carries out Hybrid Heating fusing,
Add ferrosilicon and ferromanganese after molten steel is melting down, after 3～5 minutes, add nitrided ferro-chromium；
Step 3, then rises to 1680～1750 DEG C by liquid steel temperature, is sequentially added into metallic aluminium, calcium-silicon, and continuing will
Liquid steel temperature rises to 1760～1780 DEG C, and adds WC powder and ferrozirconium, comes out of the stove after being incubated 2～3 minutes；
Step 4, is crushed to the fritter that granularity is 8～12mm by magnesium-rare earth and ferro-boron, dries 2 through 180～220 DEG C
～after 4 hours, it is placed in bottom casting ladle, pour method molten steel is carried out compound modification treatment in bag；
Step 5, the molten steel after step 4 being processed uses the method cast guide and guard of cured mould essence casting, pouring molten steel temperature
1440～1460 DEG C, air cooling guide and guard of unpacking after pouring into a mould 1～2 hour, spruing, clear up undesirable root, overlap, burr；
Step 6, carries out hard alloy coating sprayed coating process by guide and guard surface.Guide and guard surface is carried out hard alloy coating
Sprayed coating processes particular by electric arc spraying equipment at one layer of RE-WC-steel composite coating of the uniform sprayed coating of Roll Collar body surface.
Use the guide and guard that the 1Cr18Ni9Ti of high-load, WC powder and 1Cr18Mn8Ni5N make, the continuous survey of 5-7 days
In examination, under surface heat fatigue strength, non-surface damage occurs, along with 1Cr18Ni9Ti, WC powder and 1Cr18Mn8Ni5N content
Increase, the structural stability of guide and guard linearly develops.
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 (9)
1. one kind is used for milling train high hardness wear-resisting guide and guard, it is characterised in that this Roll Collar prepared is by following weight percents
Chemical composition composition: C 1.7～2.4%；W 5.0～6.0%；V1.8～2.5%；Cr12.5.0～15.0%；B 0.2～
0.5%；Mo 1.2～1.4%, Si 1.7～2.4%, RE 0.28～0.68%；Cu 0.05～0.15%；Ti 0.18～
0.20%, surplus is Fe.
2. a kind of preparation method for milling train high hardness wear-resisting guide and guard as described in claim 1 is arbitrary, it is characterised in that
Comprise the steps:
Step one, uses the 1Cr18Ni9Ti rustless steel waste material of mass percent 25.0-28.0%, 5.0-10.0%
1Cr18Mn8Ni5N rustless steel, the high carbon ferro-chrome of 3.0-5.0%, the nitrided ferro-chromium of 0.25-0.50%, the ferrosilicon of 1.2-1.6%,
The ferromanganese of 0.8-1.0%, the ferromanganese of 0.60-0.75%, the metallic aluminium of 0.55-0.70%, the VN alloy of 0.2-0.4%,
The ferrozirconium of 0.35-0.50%, the calcium-silicon of 0.6-0.8%, the ferro-boron of 0.5-0.8%, 0.25-0.28%WC powder and
The magnesium-rare earth dispensing of 0.15-0.30%, surplus is Fe；
Step 2, first by 1Cr18Ni9Ti rustless steel waste material, 1Cr18Mn8Ni5N rustless steel, the ferromanganese of 0.60-0.75%,
The nitrided ferro-chromium of the ferrozirconium of 0.35-0.50%, the VN alloy of 0.2-0.4% and 0.25-0.50% carries out Hybrid Heating fusing,
Add ferrosilicon and ferromanganese after molten steel is melting down, after 3～5 minutes, add nitrided ferro-chromium；
Step 3, then rises to 1680～1750 DEG C by liquid steel temperature, is sequentially added into metallic aluminium, calcium-silicon, continues molten steel
Temperature rises to 1760～1780 DEG C, and adds WC powder and ferrozirconium, comes out of the stove after being incubated 2～3 minutes；
Step 4, is crushed to the fritter that granularity is 8～12mm by magnesium-rare earth and ferro-boron, dries 2～4 through 180～220 DEG C little
Shi Hou, is placed in bottom casting ladle, pours method molten steel is carried out compound modification treatment in bag；
Step 5, by step 4 process after molten steel use cured mould essence casting method cast guide and guard, pouring molten steel temperature 1440～
1460 DEG C, air cooling guide and guard of unpacking after pouring into a mould 1～2 hour, spruing, clear up undesirable root, overlap, burr；
Step 6, carries out hard alloy coating sprayed coating process by guide and guard surface.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State step 6, guide and guard surface is carried out hard alloy coating sprayed coating process particular by electric arc spraying equipment at Roll Collar body
One layer of RE-WC-steel composite coating of the uniform sprayed coating in surface.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State chemical composition mass fraction %:60～65Cr of high carbon ferro-chrome, 6.8～7.5C ,≤3.0Si ,≤0.05S ,≤0.06P, Fe
Surplus.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State chemical composition mass fraction %:60～65Cr of nitrided ferro-chromium, 5.0～7.0N, C≤0.1, Si≤1.5, S≤0.04, P≤
0.03, Fe surplus.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
Stating chemical composition mass fraction %:72～80Si of ferrosilicon, 0.5～1.5Al ,≤0.05P ,≤0.04S, more than≤0.15C, Fe
Amount.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State chemical composition mass fraction %:78～85Mn ,≤1.5C ,≤the 2.0Si ,≤0.35P of ferromanganese ,≤0.03S, Fe surplus.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State chemical composition mass fraction %:8.0～10.0RE of magnesium-rare earth, Ce/RE >=46,8.0～10.0Mg, 1.0～
3.0Ca ,≤44.0Si ,≤2.0Mn ,≤1.0Ti ,≤1.2MgO, Fe surplus.
A kind of preparation method for milling train high hardness wear-resisting guide and guard the most according to claim 2, it is characterised in that institute
State chemical composition mass fraction %:66～72V of VN alloy, 12～17N, P < 0.045, S < 0.045, C < 0.50, Fe surplus.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108380675A (en) * | 2018-05-14 | 2018-08-10 | 合肥东方节能科技股份有限公司 | A kind of Combined guiding protective plate |
| CN108531809A (en) * | 2018-05-14 | 2018-09-14 | 合肥东方节能科技股份有限公司 | One kind being used for hot-rolled steel section guide crossbeam device |
| CN108588583A (en) * | 2018-05-14 | 2018-09-28 | 合肥东方节能科技股份有限公司 | A kind of manufacturing method of wear-resisting rolling mill guiding |
| CN108637262A (en) * | 2018-05-14 | 2018-10-12 | 合肥东方节能科技股份有限公司 | A kind of Combined guiding protective plate with surface spraying layer |
| CN108642378A (en) * | 2018-05-14 | 2018-10-12 | 合肥东方节能科技股份有限公司 | A kind of Roll Collar alloy material and preparation method thereof |
| CN108380675B (en) * | 2018-05-14 | 2019-06-14 | 合肥东方节能科技股份有限公司 | A kind of Combined guiding protective plate |
| CN109136730A (en) * | 2018-08-13 | 2019-01-04 | 林州凤宝管业有限公司 | A kind of high speed wire rod finishing block Roll Collar and preparation method thereof |
| CN115261705A (en) * | 2022-06-27 | 2022-11-01 | 包头职业技术学院 | Preparation method of high-strength high-toughness wear-resistant anti-fatigue steel guide plate |
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Application publication date: 20161109 |