CN106834900B - A kind of high ferrochrome roll of centrifugal compound and its manufacturing method - Google Patents

A kind of high ferrochrome roll of centrifugal compound and its manufacturing method Download PDF

Info

Publication number
CN106834900B
CN106834900B CN201710099840.1A CN201710099840A CN106834900B CN 106834900 B CN106834900 B CN 106834900B CN 201710099840 A CN201710099840 A CN 201710099840A CN 106834900 B CN106834900 B CN 106834900B
Authority
CN
China
Prior art keywords
layer
roll
roller stock
roller
ferrochrome
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710099840.1A
Other languages
Chinese (zh)
Other versions
CN106834900A (en
Inventor
袁乃博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinosteel Xingtai Machinery and Mill Roll Co Ltd
Original Assignee
Sinosteel Xingtai Machinery and Mill Roll Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinosteel Xingtai Machinery and Mill Roll Co Ltd filed Critical Sinosteel Xingtai Machinery and Mill Roll Co Ltd
Priority to CN201710099840.1A priority Critical patent/CN106834900B/en
Publication of CN106834900A publication Critical patent/CN106834900A/en
Application granted granted Critical
Publication of CN106834900B publication Critical patent/CN106834900B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/10Cast-iron alloys containing aluminium or silicon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00Centrifugal casting; Casting by using centrifugal force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product
    • B22D19/16Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/06Cast-iron alloys containing chromium
    • C22C37/08Cast-iron alloys containing chromium with nickel

Abstract

The invention discloses a kind of high ferrochrome roll of centrifugal compound and its manufacturing methods, belong to the production field of roll, are the roller core and outer layer of spheroidal graphite cast-iron including material, further include one layer of steel middle layer between outer layer and roller core;The wherein composition of alloy and mass percent of outer section are as follows: C:2.0~2.5%, Si:0.6~1.2%, Mn:0.6~1.0%, Cr:10.0~20.0%, Mo:1.0~2.0%, V:1.0~2.0%, W:0.2~1.0%, Ni: >=0.5%, P :≤0.03%, S :≤0.03%, remaining is Fe and inevitable impurity.The present invention reduces the energy consumption in roll production process by adjusting original composite centrifugal production technology, improves production efficiency, and so that all aspects of the parameters of complex high-chromium iron roll is better than the prior art by designing suitable alloy proportion simultaneously.

Description

A kind of high ferrochrome roll of centrifugal compound and its manufacturing method
Technical field
The present invention relates to the manufacturing field of roll, the high ferrochrome roll of especially a kind of centrifugal compound and its manufacturing method are used There is the high ferrochrome roll of high rigidity in manufacture.
Background technique
Composite roll is the roll of a kind of body of roll outer layer and the production of core unlike material, is metallurgical junction between two kinds of materials The roll of conjunction, composite roll had not only been able to satisfy requirement of the milling train to performances such as body of roll outer abrasion resistant, thermal fatigue resistances, but also guaranteed The obdurability of core and roll neck.It requires, generallys use all in order to meet roll outer section in use and the different of roller core Such as centrifugal compound rinses that compound, CPC is compound, electroslag is molten multiple, rotation Electroslag Cladding technology makes composite roll entirely.Wherein The high ferrochrome roll produced in a manner of centrifugal compound is widely used in hot rolled strip finish rolling leading portion and furnace volume or middle plate roughing section, It ensure that normal rolling demand.
The production procedure of the high ferrochrome roll of traditional centrifugal compound is: production-body of roll of roller blank slightly adds-body of roll spy Triage survey-roll neck processing-high temperature quenches-two sections of tempering-finishing-finished product carrying out flaw detection-grinding-finished product.Why Roller Machining carrying out flaw detection is carried out before roll is heat-treated, it is low to be primarily due to initial roll flaw detection qualification rate, and binder course exists Defect is more.Binder course big cracking is be easy to cause when being heat-treated to the roll of binder course existing defects, so as to cause big Safety accident.First processing before roll heat treatment is generally taken to detect a flaw thus, the first processing removal if the existing defects of binder course position Be heat-treated again after defect, so as to avoid because Defect expanding caused by heat treatment process so that caused by safety accident.
But with the improvement of technique, the binder course flaw detection qualification rate of the composite roll produced at present reached 99% with On, or even approached 100%, if continuing to take original technological process of production and heat treatment process, not only complex procedures and And need roll being heated to high temperature anneal temperature from room temperature when being heat-treated, waste is serious, therefore, is badly in need of compound rolling to existing Roller production technology improves.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of high ferrochrome roll of centrifugal compound and its manufacturing methods, make it Existing production technology can be simplified, and improve the outer layer of composite roll and the quality of core simultaneously.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of high ferrochrome roll of centrifugal compound, is the roller core and outer layer of spheroidal graphite cast-iron including material, outer layer and roller core it Between further include one layer of material be different from the body of roll steel middle layer;
The chemical constituent and its mass percentage of the outer layer are as follows: C:2.0~2.5%, Si:0.6~1.2%, Mn: 0.6~1.0%, Cr:10.0~20.0%, Mo:1.0~2.0%, V:1.0~2.0%, W:0.2~1.0%, Ni: >= 0.5%, P :≤0.03%, S :≤0.03%, remaining is Fe and inevitable impurity.
Technical solution of the present invention further improvement lies in that: the chemical constituent and its mass percentage of the outer layer are as follows: C:2.4%, Si:1.1%, Mn:0.9%, Cr:19.5%, Mo:1.9%, V:1.9%, W:0.9%, Ni:1.1%, P≤ 0.03%, S≤0.03%, remaining is Fe and inevitable impurity.
A kind of manufacturing method of the high ferrochrome roll of centrifugal compound, comprising the following steps:
A, roller stock cast: according to design match allotment raw material, in intermediate frequency furnace smelt after formed outer layer molten iron, then from The high ferrochrome outer layer molten iron of scheming upper, pours into middle layer molten steel after molten steel solidification;To the high chromium hot melt of outer layer steel and middle layer Molten steel solidify completely after centrifuge stall, mould assembling finally pours into core spheroidal graphite cast-iron water and roller stock is made;
B, it unpacks: after core molten iron solidifies completely, unpacking, and roller stock is directly loadable into and is preheating to 800~1000 in advance DEG C high-temperature annealing furnace in;
C, it anneals: high annealing heat treatment is carried out to roller stock, roll is first heated to 850~1000 DEG C, heat preservation 20h is laggard Row Slow cooling, 1~5 DEG C/h of cooling velocity;
Start blowing when roller stock progressively cools to 750 DEG C and fast cooling, the cooling of fast cooling process are carried out to roller stock 1~5 DEG C/S of speed;
Stop drying when roller stock being cooled to 500 DEG C by fast cooling, is air-cooled to room temperature, cooling velocity after keeping the temperature 20h For 15~30 DEG C/h;
D, roughing: roughing is carried out to roller stock, then the roller stock complete to roughing carries out ultrasonic examination;
E, it is tempered: tempering is carried out to roller stock, tempering temperature is 500~560 DEG C, is air-cooled to room temperature after keeping the temperature 25h;
F, it finishes: after the completion of tempering, finishing being carried out to roller stock by required size, roll is made, finally carry out ultrasonic wave Flaw detection, hardness test and microstructure examination.
Technical solution of the present invention further improvement lies in that: in step E to roller stock carry out 2 times or 3 temperings.
Technical solution of the present invention further improvement lies in that: the weight of the casting of middle layer molten steel accounts for outer layer iron in step A The 10%~30% of water casting weight.
By adopting the above-described technical solution, the technological progress achieved by the present invention is:
Using roll made from the material mixture ratio of body of roll outer layer provided in the present invention, the body of roll surface hardness of roll 65~80HSD can be reached, and with having excellent wearability, excellent oxidation film to form and keep ability and high group Knit stability.
In the present invention when heat treatment of the high ferrochrome roll of centrifugal compound, no longer using traditional using electric energy by roll from room Temperature begins to warm up the high temperature anneal temperature of needs, but is being required roller temperature control using the afterheat in casting of roll itself Heat treatment temperature and heat preservation so that skin of the roll is consistent with the heat treatment of inner core part not only increase the heat treatment of roll Effect, while also substantially reducing the consumption of the energy, simplify production technology, shorten the production cycle.
In the subsequent process of high annealing, roll carries out Slow cooling, to reduce the thermal stress of roll;To body of roll temperature Body of roll position is quickly cooled down when i.e. 750 DEG C when degree being reduced to pearlite transformation area, it is a large amount of that this measure can be avoided generation Pearlite guarantees that every mechanical property of roll is up to standard smoothly.It is escaped after perlitic transformation area reaches 500 DEG C after body of roll temperature It keeps the temperature again and carries out body of roll samming and stress relief annealing, be slowly cooled to room temperature thereafter.
The present invention is also added to one layer of steel middle layer between the roller core portion of spheroidal graphite cast-iron and outer layer, and this measure can be improved The quality of composite roll binder course guarantees that binder course does not occur the defect of large area.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
The high ferrochrome roll of centrifugal compound involved in the present invention be widely used in hot rolled strip finish rolling leading portion and furnace volume or Middle plate roughing section, the present invention in the high ferrochrome roll of centrifugal compound include material be spheroidal graphite cast-iron roller core and outer layer, in order to The quality for improving binder course, prevents binder course from large area defect occur, further includes one layer of steel between the outer layer and roller core of roll Middle layer processed;The chemical constituent and its mass percentage of outer layer control in the following range: C:2.0~2.5%, Si:0.6~ 1.2%, Mn:0.6~1.0%, Cr:10.0~20.0%, Mo:1.0~2.0%, V:1.0~2.0%, W:0.2~1.0%, Ni: >=0.5%, P :≤0.03%, S :≤0.03%, remaining is Fe and inevitable impurity.
The production method of the high ferrochrome roll of centrifugal compound involved in the present invention is done into one combined with specific embodiments below Walk explanation.
Embodiment one:
The ingredient design object of body of roll outer section in the present embodiment are as follows: C:2.4%, Si:1.1%, Mn:0.9%, Cr: 19.5%, Mo:1.9%, V:1.9%, W:0.9%, Ni:1.1%, P≤0.03%, S≤0.03%, remaining is Fe and can not keep away The impurity exempted from.The production method is as follows:
A, roller stock cast: according to design object deploy raw material, in intermediate frequency furnace smelt after formed outer layer molten iron, then from The high ferrochrome outer layer molten iron of scheming upper, pours into middle layer molten steel after molten steel solidification, and the amount of pouring of middle layer molten steel accounts for outer layer The 15% of molten iron casting weight;Centrifuge stalls after the molten steel of the high chromium hot melt of outer layer steel and middle layer solidifies completely, mould assembling, most After pour into core spheroidal graphite cast-iron water roller stock be made;
B, it unpacks: after core molten iron solidifies completely, unpacking, and roller stock is directly loadable into and is preheating to 800~1000 in advance DEG C high-temperature annealing furnace in;
C, it anneals: high annealing heat treatment is carried out to roller stock, roll is first heated to 850~1000 DEG C, heat preservation 20h is laggard Row Slow cooling, 1~5 DEG C/h of cooling velocity;
Start blowing when roller stock progressively cools to 750 DEG C and fast cooling, the cooling of fast cooling process are carried out to roller stock 1~5 DEG C/S of speed;
Stop drying when roller stock being cooled to 500 DEG C by fast cooling, is air-cooled to room temperature, cooling velocity after keeping the temperature 20h For 15~30 DEG C/h;
D, roughing: roughing is carried out to roller stock, then the roller stock complete to roughing carries out ultrasonic examination;
E, it is tempered: two sections of temperings is carried out to roller stock, tempering temperature is 500~560 DEG C, is air-cooled to room after keeping the temperature 25h Temperature;
F, it finishes: after the completion of tempering, finishing being carried out to roller stock by required size, roll is made, finally carry out ultrasonic wave Flaw detection, hardness test and microstructure examination.
The hard of body of roll outer section is obtained after detecting hardness according to GB/T13313-2008 method using sclerometer Degree is 78HSD;After ultrasonic examination, do not find that large area defect occurs in binder course part, overall acceptability rate reaches 99.8%.
Embodiment 2 is to embodiment 5:
The processing step of embodiment 2 to embodiment 5 is same as Example 1, the difference is that body of roll outer section is each The design object of composition weight proportion is different, and each component design object is as follows:
The surface hardness of each embodiment is as shown in the table after testing:

Claims (4)

1. a kind of high ferrochrome roll of centrifugal compound is the roller core and outer layer of spheroidal graphite cast-iron including material, it is characterised in that: outer layer It further include one layer of steel middle layer between roller core;
The chemical constituent and its mass percentage of the outer layer are as follows: C:2.0~2.5%, Si:0.6~1.2%, Mn:0.6~ 1.0%, Cr:10.0~20.0%, Mo:1.0~2.0%, V:1.0~2.0%, W:0.2~1.0%, Ni: >=0.5%, P :≤0.03%, S :≤0.03%, remaining is Fe and inevitable impurity;
The manufacturing method of the high ferrochrome roll of centrifugal compound the following steps are included:
A, roller stock cast: according to above-mentioned alloy compositions deploy raw material, in intermediate frequency furnace smelt after formed outer layer molten iron, then from The high ferrochrome outer layer molten iron of scheming upper, pours into middle layer molten steel after molten steel solidification;To the high chromium hot melt of outer layer steel and middle layer Molten steel solidify completely after centrifuge stall, mould assembling finally pours into core spheroidal graphite cast-iron water and roller stock is made;
B, it unpacks: it is unpacking after core molten iron solidify completely, and roller stock is directly loadable into and is preheating to 800 ~ 1000 DEG C of height in advance In warm annealing furnace;
C, it anneals: high annealing heat treatment being carried out to roller stock, roll is first heated to 850 ~ 1000 DEG C, is delayed after keeping the temperature 20h Slow cool down, 1 ~ 5 DEG C/h of cooling velocity;
Start blowing when roller stock progressively cools to 750 DEG C and fast cooling, the cooling velocity 1 of fast cooling process are carried out to roller stock ~5℃/S;
Stopping drying when roller stock being cooled to 500 DEG C by fast cooling, keeps the temperature and be air-cooled to room temperature after 20h, cooling velocity is 15 ~ 30℃/h;
D, roughing: roughing is carried out to roller stock, then the roller stock complete to roughing carries out ultrasonic examination;
E, it is tempered: tempering is carried out to roller stock, tempering temperature is 500 ~ 560 DEG C, is air-cooled to room temperature after keeping the temperature 25h;
F, it finishes: after the completion of tempering, finishing being carried out to roller stock by required size, roll is made, finally carry out ultrasonic wave spy Wound, hardness test and microstructure examination.
2. the high ferrochrome roll of a kind of centrifugal compound according to claim 1, it is characterised in that: the chemical constituent of the outer layer And its mass percentage are as follows: C:2.4%, Si:1.1%, Mn:0.9%, Cr:19.5%, Mo:1.9%, V:1.9%, W:0.9%, Ni: 1.1%, P≤0.03%, S≤0.03%, remaining is Fe and inevitable impurity.
3. the high ferrochrome roll of a kind of centrifugal compound according to claim 1, it is characterised in that: carry out 2 to roller stock in step E Secondary or 3 temperings.
4. the high ferrochrome roll of a kind of centrifugal compound according to claim 1, it is characterised in that: middle layer molten steel in step A Casting weight account for outer layer molten iron casting weight 10% ~ 30%.
CN201710099840.1A 2017-02-23 2017-02-23 A kind of high ferrochrome roll of centrifugal compound and its manufacturing method Active CN106834900B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710099840.1A CN106834900B (en) 2017-02-23 2017-02-23 A kind of high ferrochrome roll of centrifugal compound and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710099840.1A CN106834900B (en) 2017-02-23 2017-02-23 A kind of high ferrochrome roll of centrifugal compound and its manufacturing method

Publications (2)

Publication Number Publication Date
CN106834900A CN106834900A (en) 2017-06-13
CN106834900B true CN106834900B (en) 2019-06-21

Family

ID=59133395

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710099840.1A Active CN106834900B (en) 2017-02-23 2017-02-23 A kind of high ferrochrome roll of centrifugal compound and its manufacturing method

Country Status (1)

Country Link
CN (1) CN106834900B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107511398B (en) * 2017-08-09 2019-07-02 三鑫重工机械有限公司 A kind of strong exhibition roll of wear-resistant type strip
CN107891138B (en) * 2017-11-09 2020-02-04 常州凯达重工科技有限公司 Preparation process of ultrahigh vanadium high-speed steel compression roller for manufacturing metal corrugated board
CN108004458B (en) * 2017-12-13 2021-01-08 中钢集团邢台机械轧辊有限公司 Improved high-chromium iron roller for tungsten modification treatment
CN108018482B (en) * 2017-12-19 2020-12-29 中钢集团邢台机械轧辊有限公司 High-chromium iron roller
CN108115105B (en) * 2017-12-22 2021-05-14 中钢集团邢台机械轧辊有限公司 Preparation method of high-alloy centrifugal roller
CN109465418B (en) * 2018-12-12 2021-01-08 中钢集团邢台机械轧辊有限公司 Roll sleeve of roll squeezer and manufacturing method thereof
CN109702175B (en) * 2018-12-17 2021-01-29 邢台德龙机械轧辊有限公司 Preparation method of roller and roller

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615108B (en) * 2012-04-09 2014-01-29 北京工业大学 Centrifugal casting high-speed steel composite roll and manufacture method thereof
CN103381477B (en) * 2013-07-05 2015-05-13 中钢集团邢台机械轧辊有限公司 Centrifugal casting method for thin-working layer composite cast iron roll
CN103526126B (en) * 2013-09-02 2015-11-18 中钢集团邢台机械轧辊有限公司 A kind of tool steel roll for rolling plate of moderate thickness and manufacture method thereof
CN105543655B (en) * 2015-12-24 2018-01-05 中钢集团邢台机械轧辊有限公司 H-Beam Rolling Mill high-chromium alloy anticentripetal roll collar and its manufacture method
CN106222530A (en) * 2016-08-30 2016-12-14 江苏共昌轧辊股份有限公司 A kind of centrifugal casting rich chromium cast iron collars and preparation method

Also Published As

Publication number Publication date
CN106834900A (en) 2017-06-13

Similar Documents

Publication Publication Date Title
CN106834900B (en) A kind of high ferrochrome roll of centrifugal compound and its manufacturing method
CN103316929B (en) Rolling and cooling technology method for reducing GCR15 bearing steel zonary carbide level
CN100404152C (en) High speed steel composite roll and its preparing method
JP5531109B2 (en) Martensitic stainless steel produced by twin roll thin plate casting process and method for producing the same
CN104388812B (en) High-speed steel composite roller for rods/wires and preparation method of high-speed steel composite roller
CN106884126B (en) A kind of high chromium steel roller and its manufacturing method
CN102899449B (en) Production technology of extra thick steel plate with super detection standard
CN105755379B (en) Wear-resistant high speed steel collars for kocks milling trains and preparation method thereof
CN104384193A (en) High speed steel finishing roll of wire bar mill and manufacturing method of high speed steel finishing roll
CN106222530A (en) A kind of centrifugal casting rich chromium cast iron collars and preparation method
CN105239018A (en) Roller and manufacturing method thereof
CN107475641A (en) High-speed steel roll and preparation method thereof
CN109158558A (en) A kind of H13 round steel continuous casting and rolling manufacturing process
US20160208357A1 (en) Process for producing non quenched and tempered steel
CN109482656A (en) The rolling-cogging production method of 416 free cutting stainless steels
CN106917035B (en) A kind of high ferrochrome collars of wear-resisting type and its manufacturing method
CN109482654A (en) For Kocks milling train composite ring and its manufacturing method
CN107739877B (en) One Albatra metal roller set and preparation method thereof
CN105624571A (en) Super-thick steel plate and production technology thereof
CN106676409B (en) High chrome anticentripetal roll collar and its manufacturing method
CN110468334A (en) The uniform plastic mould thickness band steel of section hardness and its process
JP3729178B2 (en) Centrifuge cast composite work roll for cold rolling
CN108060365A (en) A kind of cast steel with high chromium roll for hot rolled strip rolling
CN107326267A (en) A kind of production technology of bearing steel
CN107815584A (en) A kind of iron chair for high ferro fastener and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant