CN106048398A - High-hardness alloy material and heat treatment method for guide and guard of rolling mill - Google Patents
High-hardness alloy material and heat treatment method for guide and guard of rolling mill Download PDFInfo
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- CN106048398A CN106048398A CN201610664497.6A CN201610664497A CN106048398A CN 106048398 A CN106048398 A CN 106048398A CN 201610664497 A CN201610664497 A CN 201610664497A CN 106048398 A CN106048398 A CN 106048398A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a high-hardness alloy material and heat treatment method for a guide and guard of a rolling mill. The high-hardness alloy material comprises, by mass, 2.45 to 2.6% of C, 8 to 10.5% of Cr, 3.8 to 4.2% of Ti, 0.4 to 0.8% of Mn, 0.4 to 0.6% of Co, 0.05 to 0.1% of Mo and 0.15 to 0.2% of Cu, with the balance being Fe, wherein a mass ratio of Ti to C is in a range of 1 to 3. According to the invention, alloy components, especially carbon and chromium contents, are adjusted on the basis of traditional chromium-based high-temperature wear-resistant alloy, so the surface-enhanced antioxidation performance of the guide and guard of the rolling mill is improved, steel bonding is prevented, and high-temperature resistance and corrosion resistance are improved; and Ti and Co added into the high-hardness alloy material form high-hardness carbide with C, so high-hardness alloy carbide in dispersion distribution is formed, and high hardness, wear resistance and red hardness of alloy are guaranteed.
Description
Technical field
The invention belongs to technical field of metal, particularly relate to a kind of rolling mill guiding high hardness alloy material and roll
Machine guide and guard heat treatment 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.
Owing to guide and guards bears huge mechanical pressure, its structure causing the destruction of persistence, the life-span is the most relatively low.
Existing rolling mill guiding uses austenitic heat-resistance steel mostly, and this material has preferable high-temperature stability and toughness, but it is high
Temperature wears no resistance, and causes product serious wear, and steel transportation amount is usually no more than 800 tons, and service life is low.
Summary of the invention
It is an object of the invention to provide a kind of rolling mill guiding high hardness alloy material and rolling mill guiding heat treatment method,
Become the carbide of high rigidity by Ti, Co of addition with C-shaped, form high rigidity and the alloy carbide of Dispersed precipitate, it is ensured that close
The hardness of Jin Yougao, wearability and red hardness, solve the existing rolling mill guiding life-span low, flimsy problem.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of rolling mill guiding high hardness alloy material, including each component of this high hardness alloy material by matter
The composition of amount percentage ratio is: C:2.45～2.6%, Cr:8～10.5%, Ti:3.8～4.2%, Mn:0.4～0.8%, Co:
0.4～0.6%, Mo:0.05～0.1%, Cu:0.15～0.2%, surplus is the ratio of the mass percent between Fe, and Ti and C
Example is: Ti/C=1～3；
The heat treatment method of described high-strength alloy material comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 200 DEG C～300 DEG C, and the time is 2
Hour～3.5 hours, stove is cooled to room temperature；
Step 2: then, through 600 DEG C～the preheating of 800 DEG C, is incubated 4 hours, and carries out 1060 DEG C～2050 DEG C consolidate
Molten process 4 hours～5 hours；
Step 3: last, is heated to 440 DEG C～480 DEG C with the firing rate of 80 DEG C～100 DEG C/h, carries out 2 hours
～440 DEG C of 3 hours～480 DEG C of high temperings, air cooling is to room temperature；
Step 4: finally 270 DEG C～290 DEG C of lonneals 5 hours, cool to room temperature with the furnace.
Rolling mill guiding heat treatment method, described rolling mill guiding is made up of the high-strength alloy material described in claim 1
, its heat treatment method comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 200 DEG C～300 DEG C, and the time is 2
Hour～3.5 hours, stove is cooled to room temperature；
Step 2: then, through 600 DEG C～the preheating of 800 DEG C, is incubated 4 hours, and carries out 1060 DEG C～2050 DEG C consolidate
Molten process 4 hours～5 hours；
Step 3: last, is heated to 440 DEG C～480 DEG C with the firing rate of 80 DEG C～100 DEG C/h, carries out 2 hours
～440 DEG C of 3 hours～480 DEG C of high temperings, air cooling is to room temperature；
Step 4: finally 270 DEG C～290 DEG C of lonneals 5 hours, cool to room temperature with the furnace.
Further, in described step one, Low-temperature stress-relief annealing process is heated to 200 DEG C～the liter of 300 DEG C by room temperature
Temperature speed is 85 DEG C～100 DEG C/h.
Further, in described step 2, solution treatment process is heated to the intensification speed of 1060 DEG C～2050 DEG C by room temperature
Degree is 205 DEG C～250 DEG C/h.
Further, in described step 3, high tempering process is heated to 440 DEG C～the programming rate of 480 DEG C by room temperature
It it is 55 DEG C～75 DEG C/h.
Further, in described step 4, lonneal process is heated to 270 DEG C～the programming rate of 290 DEG C by room temperature
It it is 25 DEG C～30 DEG C/h.
This rolling mill guiding high hardness alloy material is by adjusting chemical composition and using different Technologies for Heating Processing, to change
It is apt to and improves alloy rigidity and toughness, thus meeting the severe working environment of guide and guard material and high performance requirement.The present invention
Each component of described high temperature wear resistant alloy material is: C:2.45～2.6wt% (mass percent), Cr:8～10.5wt%, Ti:
3.8～4.2wt%, Mn:0.4～0.8wt%, Co:0.4～0.6wt%, Mo:0.05～0.1wt%, P≤0.03wt%, S≤
0.03wt%, Cu:0.15～0.2wt%, wt% represents mass percent.Co, as additive, has an effect of bonding, Ti,
Mn, Mo, Cu etc. are addible material for material, thus improve the characteristics such as the quenching degree of alloy material, hardness and toughness.
Wherein, C:2.45～2.6wt%, coordinate with the alloying element such as Ti, Fe, form high rigidity and the alloy of Dispersed precipitate
Carbide, it is ensured that alloy has high hardness, wearability and red hardness；
Wherein, Mn:0.4～0.8wt%, make alloy have good solid solution strengthening effect, put forward heavy alloyed heat resistance；
Wherein, Cr:8～10.5wt%, be conducive to putting forward heavy alloyed quenching degree and wearability, and form cause at alloy surface
Close chromium oxide film, to strengthen antioxygenic property, pre-adhesion resistant steel, promote resistance to high temperature corrosion performance；Add a small amount of Ni, Mo, Cu
It is easy to be formed the most tiny, disperse, hard and not agglomeration alloy carbide Deng alloying element, to cause post-curing to imitate
Should, there is good toughness simultaneously.
Wherein, to put forward heavy alloyed plasticity and heat conductivity, make carbide attenuate, discontinuously, prevent guide and guard at rapid heat cycle
Use environment in produce and burst.
The method have the advantages that
1, the high-strength alloy material of the present invention is by tradition chromio high temperature wear resistant alloy (C:0.70-1.40wt%；
Cr:8.00-14.00wt%), on the basis of, by adjusting alloying component, especially adjust carbon, chromium content, improve this milling train and lead
The surface enhanced antioxygenic property defended, pre-adhesion resistant steel, promote resistance to high temperature corrosion performance.
2, Ti, the Co added in the high-strength alloy material of the present invention becomes the carbide of high rigidity with C-shaped, forms high rigidity
And the alloy carbide of Dispersed precipitate, it is ensured that alloy has high hardness, wearability and red hardness.
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 rolling mill guiding high hardness alloy material, each component of this high hardness alloy material structure by mass percentage
Become: C:2.45w%, Cr:8w%, Ti:3.8w%, Mn:0.4w%, Co:0.4w%, Mo:0.05w%, Cu:0.15w%, remaining
Amount for the ratio of the mass percent between Fe, and Ti and C is: Ti/C=1.55；
The heat treatment method of this high-strength alloy material comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 200 DEG C, and the time is 2.5 hours,
Stove is cooled to room temperature；The programming rate that Low-temperature stress-relief annealing process is heated to 200 DEG C by room temperature is 85 DEG C/h.
Step 2: then, through the preheating of 600 DEG C, is incubated 4 hours, and carries out the solution treatment 4 hours of 1360 DEG C；Gu
The programming rate that molten processing procedure is heated to 1360 DEG C by room temperature is 205 DEG C/h.
Step 3: last, is heated to 440 DEG C with the firing rate of 80 DEG C/h, and the 440 DEG C of high temperature carried out 2 hours return
Fire, air cooling is to room temperature；The programming rate that high tempering process is heated to 440 DEG C by room temperature is 55 DEG C/h.
Step 4: finally 270 DEG C of lonneals 5 hours, cooling to room temperature with the furnace, lonneal process is heated by room temperature
It it is 25 DEG C/h to the programming rates of 270 DEG C.
Normal Temperature: micro-hardness: tiny in matrix, disperse, the microhardness of equally distributed carbide are
HV1550～1620；Macrohardness: guide and guard worksheet surface layer hardness HRC70～72.5；Impact flexibility: 11.5J/m2.
Embodiment two
A kind of rolling mill guiding high hardness alloy material, each component of this high hardness alloy material structure by mass percentage
Becoming: C:2.6%, Cr:10.5%, Ti:4.2%, Mn:0.8%, Co:0.6%, Mo:0.1%, Cu:0.2%, surplus is Fe,
And the ratio of the mass percent between Ti and C is: Ti/C=1.61；
The heat treatment method of this high-strength alloy material comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 300 DEG C, and the time is 3.5 hours,
Stove is cooled to room temperature；The programming rate that Low-temperature stress-relief annealing process is heated to 300 DEG C by room temperature is 85 DEG C/h.
Step 2: then, through the preheating of 600 DEG C, is incubated 4 hours, and carries out the solution treatment 4 hours of 2010 DEG C；Gu
The programming rate that molten processing procedure is heated to 2010 DEG C by room temperature is 250 DEG C/h.
Step 3: last, is heated to 800 DEG C with the firing rate of 100 DEG C/h, and the 800 DEG C of high temperature carried out 2 hours return
Fire, air cooling is to room temperature；The programming rate that high tempering process is heated to 800 DEG C by room temperature is 60 DEG C/h.
Step 4: finally 290 DEG C of lonneals 5 hours, cooling to room temperature with the furnace, lonneal process is heated by room temperature
It it is 25 DEG C/h to the programming rates of 270 DEG C.
Normal Temperature: micro-hardness: tiny in matrix, disperse, the microhardness of equally distributed carbide are
HV2550～3000；Macrohardness: guide and guard worksheet surface layer hardness HRC102.1～122.5；Impact flexibility: 13.5J/m2.
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 (6)
1. a rolling mill guiding high hardness alloy material, it is characterised in that each component of this high hardness alloy material presses quality
The composition of percentage ratio is: C:2.45～2.6%, Cr:8～10.5%, Ti:3.8～4.2%, Mn:0.4～0.8%, Co:0.4
～0.6%, Mo:0.05～0.1%, Cu:0.15～0.2%, surplus is the ratio of the mass percent between Fe, and Ti and C
For: Ti/C=1～3；
The heat treatment method of described high-strength alloy material comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 200 DEG C～300 DEG C, and the time is 2 hours
～3.5 hours, stove is cooled to room temperature；
Step 2: then, through 600 DEG C～the preheating of 800 DEG C, is incubated 4 hours, and carries out at the solid solution of 1060 DEG C～2050 DEG C
Manage 4 hours～5 hours；
Step 3: last, is heated to 440 DEG C～480 DEG C with the firing rate of 80 DEG C～100 DEG C/h, carries out 2 hours～3 little
Time 440 DEG C～480 DEG C of high temperings, air cooling is to room temperature；
Step 4: finally 270 DEG C～290 DEG C of lonneals 5 hours, cool to room temperature with the furnace.
2. rolling mill guiding heat treatment method, it is characterised in that described rolling mill guiding is by the high-strength alloy described in claim 1
Material is made, and its heat treatment method comprises the steps:
Step one: first, carries out Low-temperature stress-relief annealing to rolling mill guiding at a temperature of 200 DEG C～300 DEG C, and the time is 2 hours
～3.5 hours, stove is cooled to room temperature；
Step 2: then, through 600 DEG C～the preheating of 800 DEG C, is incubated 4 hours, and carries out at the solid solution of 1060 DEG C～2050 DEG C
Manage 4 hours～5 hours；
Step 3: last, is heated to 440 DEG C～480 DEG C with the firing rate of 80 DEG C～100 DEG C/h, carries out 2 hours～3 little
Time 440 DEG C～480 DEG C of high temperings, air cooling is to room temperature；
Step 4: finally 270 DEG C～290 DEG C of lonneals 5 hours, cool to room temperature with the furnace.
Rolling mill guiding heat treatment method the most according to claim 2, it is characterised in that in described step one, low temperature goes should
The programming rate that power annealing process is heated to 200 DEG C～300 DEG C by room temperature is 85 DEG C～100 DEG C/h.
Rolling mill guiding heat treatment method the most according to claim 2, it is characterised in that in described step 2, solution treatment
The programming rate that process is heated to 1060 DEG C～2050 DEG C by room temperature is 205 DEG C～250 DEG C/h.
Rolling mill guiding heat treatment method the most according to claim 2, it is characterised in that in described step 3, high tempering
The programming rate that process is heated to 440 DEG C～480 DEG C by room temperature is 55 DEG C～75 DEG C/h.
Rolling mill guiding heat treatment method the most according to claim 2, it is characterised in that in described step 4, lonneal
The programming rate that process is heated to 270 DEG C～290 DEG C by room temperature is 25 DEG C～30 DEG C/h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521307A (en) * | 2016-11-14 | 2017-03-22 | 安徽名杰净化科技有限公司 | Preparation method of anti-cracking air purifier cast iron base |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200532033A (en) * | 2004-03-23 | 2005-10-01 | Hong-Jang Hsu | Alloy for engine parts and method of producing the same |
| CN1847439A (en) * | 2006-04-30 | 2006-10-18 | 郑州航空工业管理学院 | Guide and guard roller for guiding steel billet in high speed wire rolling machine and its making process |
| CN103757545A (en) * | 2014-01-29 | 2014-04-30 | 合肥东方节能科技股份有限公司 | High-temperature wearing-resistance alloy material for rolling mill guide and guard unit and rolling mill guide and guard unit thermal treatment method |
| CN104789872A (en) * | 2015-04-24 | 2015-07-22 | 合肥东方节能科技股份有限公司 | Rolling mill guide roller and preparation method thereof |
| CN104789851A (en) * | 2015-04-24 | 2015-07-22 | 合肥东方节能科技股份有限公司 | High-temperature wearing-resistance alloy material for rolling mill guide roller and preparation method of high-temperature wearing-resistance alloy material |
| CN104878296A (en) * | 2015-06-12 | 2015-09-02 | 合肥东方节能科技股份有限公司 | High vanadium anti-wear alloy material for rolling mill guide roller and rolling mill guide roller heat treatment method |
-
2016
- 2016-08-12 CN CN201610664497.6A patent/CN106048398A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200532033A (en) * | 2004-03-23 | 2005-10-01 | Hong-Jang Hsu | Alloy for engine parts and method of producing the same |
| CN1847439A (en) * | 2006-04-30 | 2006-10-18 | 郑州航空工业管理学院 | Guide and guard roller for guiding steel billet in high speed wire rolling machine and its making process |
| CN103757545A (en) * | 2014-01-29 | 2014-04-30 | 合肥东方节能科技股份有限公司 | High-temperature wearing-resistance alloy material for rolling mill guide and guard unit and rolling mill guide and guard unit thermal treatment method |
| CN104789872A (en) * | 2015-04-24 | 2015-07-22 | 合肥东方节能科技股份有限公司 | Rolling mill guide roller and preparation method thereof |
| CN104789851A (en) * | 2015-04-24 | 2015-07-22 | 合肥东方节能科技股份有限公司 | High-temperature wearing-resistance alloy material for rolling mill guide roller and preparation method of high-temperature wearing-resistance alloy material |
| CN104878296A (en) * | 2015-06-12 | 2015-09-02 | 合肥东方节能科技股份有限公司 | High vanadium anti-wear alloy material for rolling mill guide roller and rolling mill guide roller heat treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521307A (en) * | 2016-11-14 | 2017-03-22 | 安徽名杰净化科技有限公司 | Preparation method of anti-cracking air purifier cast iron base |
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Application publication date: 20161026 |