CN109047700A - A kind of compound body of roll production method of bimetallic - Google Patents

A kind of compound body of roll production method of bimetallic Download PDF

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Publication number
CN109047700A
CN109047700A CN201810793600.6A CN201810793600A CN109047700A CN 109047700 A CN109047700 A CN 109047700A CN 201810793600 A CN201810793600 A CN 201810793600A CN 109047700 A CN109047700 A CN 109047700A
Authority
CN
China
Prior art keywords
roll
metal
bimetallic
compound
roll production
Prior art date
Application number
CN201810793600.6A
Other languages
Chinese (zh)
Inventor
李道俊
陈智强
李道军
Original Assignee
柳州市创科复合金属陶瓷制品有限公司
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.)
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Application filed by 柳州市创科复合金属陶瓷制品有限公司 filed Critical 柳州市创科复合金属陶瓷制品有限公司
Priority to CN201810793600.6A priority Critical patent/CN109047700A/en
Publication of CN109047700A publication Critical patent/CN109047700A/en

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Classifications

    • 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

Abstract

The present invention provides a kind of compound body of roll production method of bimetallic, comprising the following steps: the production of body of roll metal mold;Body of roll metal mold is placed on centrifuge support roller;It is poured outer sphere molten metal and forms working lining;Casting inner layer metal liquid forms internal layer after outer sphere molten metal solidification.The body of roll is made of two kinds of materials, can be depending on the different condition of work, and the hardness of body of roll working lining is high, intensity is high, rather than working lining toughness is high, intensity is high and machinability is good.

Description

A kind of compound body of roll production method of bimetallic
[technical field]
The present invention relates to metal smelt industries, more particularly, to a kind of compound body of roll production method of bimetallic.
[background technique]
The annual output of current China hot continuous rolling steel is more than 1,000,000,000 tons, and million tons of annual consumption or more of roll, tradition is raw The roll of production technology production be that the mode of outer cooled is: for inhibit roll when being on active service surface with it is red-hot (usual 1100 DEG C~ 1150 DEG C) rolled piece contact and cause temperature increase and to contact carry out sufficient medium (usually water) cool down.The cooling Mode is to inhibit roll surface temperature rise to a certain extent, but make impact of the roller surface by cold cycling, generates big outer change Stress, generating roll surface prematurely, fatigue crack is resistance to make roll surface fail.Furthermore the type of cooling exists Also inevitably rolled piece is cooled down while cooling roll surface, the cooling of rolled piece is caused, for the temperature for making up this part Loss, the heating tapping temperature of steel billet have to improve tens of degree even nearly Baidu, this, which means that, increases energy consumption, adds The big burden of heating equipment, rolled piece are flooded leaching at high temperature and surface oxidation are caused to aggravate, and generate a large amount of iron scale, both It is degrading rolling operation, and reduces steel yield rate.
[summary of the invention]
Goal of the invention of the invention is: for overcome the deficiencies in the prior art, provide one kind can make prick roller cooling but The inner-cooled temp auto-controlled for not influencing rolled piece temperature pricks roller.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of compound body of roll production method of bimetallic, comprising the following steps: body of roll metal mold production;By the body of roll metal Type is placed on centrifuge support roller;It is poured outer sphere molten metal and forms working lining;Thermit reaction forms a kind of cermet compositions Matter, the specific gravity of the substance are slightly lighter than the molten metal of subsequent addition;It is filled with above-mentioned substance and metal liquid, which is Gao Jin Part is synthesized, there is high rigidity, high-wearing feature;Casting inner layer metal liquid forms internal layer after outer sphere molten metal solidification.
Further, the junction of the outer sphere molten metal and the inner layer metal liquid forms transition zone, the transition zone With a thickness of 1mm-5mm.
Further, it in the casting outer sphere molten metal step also needs that anti-oxidation solvent is added.
Further, with the increase of amount of metal in metal mold, internal diameter is gradually reduced, if revolving speed is constant, linear velocity is therewith Reducing, liquid metals is possible to generate to drench and fall, and it is generated here to be anti-, line inner hole linear velocity need to be kept not make big variation, so It need to constantly adjust to rated value.
Further, the outer sphere molten metal is hypo eutectoid medium alloy steel or hypereutectoid structure steel alloy.
Further, the inner layer metal liquid is middle carbon and low-alloy structural steel.
Further, the internal layer turnery processing forms leaf structure, and the leaf structure is increased for radiating Heat dissipation area.
Further, the internal layer is coated with metal coating, and the metal coating has high thermal conductivity and high anti-oxidation Property.
Further, the body of roll metal mold is ductile cast iron material.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
The body of roll is made of two kinds of materials, can be depending on the different condition of work, and the hardness of body of roll working lining is high, strong Degree is high, rather than working lining toughness is high, intensity is high and machinability is good.
[Detailed description of the invention]
Fig. 1 is a flow chart of the compound body of roll production method of bimetallic of the present invention.
[specific embodiment]
Below with reference to embodiment, the invention will be further described.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases Any and all combinations of the listed item of pass.
Referring to Fig. 1, a kind of compound body of roll production method of bimetallic, comprising the following steps:
Body of roll Design of Permanent Mould, production;
Coating, drying are hung in casting mold preheating;
Casting mold installation, installation running gate system;
The allotment of outer layer metal material, melting, chemical examination, thermometric, weighing;
Booting casting outer sphere molten metal;
The allotment of inner layer metal material, melting, chemical examination, thermometric, weighing;
Inner layer metal liquid is poured after outer layer solidification;
After the solidification of inner layer metal liquid and when some strength, shuts down, remove casting mold;
Blank is taken out at 850 DEG C -900 DEG C of internal layer temperature;
800 DEG C of -850 DEG C of blanks are packed into resistance furnace samming 2-3 hours and are come out of the stove with being furnace-cooled to 250 DEG C.
The technological parameter of the compound body of roll of centrifugal casting is as shown in table 1:
Table 1
A: with the increase of amount of metal in casting mold, internal diameter is gradually reduced, if revolving speed is constant, linear velocity reduces therewith, liquid Metal is possible to generate to drench and fall, and generates here to be anti-, line inner hole linear velocity need to be kept not make big variation, so need to constantly adjust To rated value.
B: it when 800 DEG C~900 DEG C of blank is put into resistance furnace 3 fluctuation of heat preservation, comes out of the stove with being furnace-cooled to 250 DEG C.
The junction of outer sphere molten metal and inner layer metal liquid forms transition zone, transition region thickness 1mm-5mm.Make two kinds of materials Material mixing or do not combine product grain, carbide under as cast condition it is tiny, it is uniform, without composition be segregated.Outer sphere molten metal is to close in hypo eutectoid Golden steel or hypereutectoid structure steel alloy.Inner layer metal liquid is middle carbon and low-alloy structural steel.The working lining of the compound body of roll of bimetallic and interior The chemical component of layer is as shown in table 2:
Table 2
Internal layer turnery processing forms leaf structure, and the leaf structure increases heat dissipation area for radiating.Internal layer It is coated with metal coating, metal coating has high thermal conductivity and high antioxidant.Body of roll metal mold is ductile cast iron material.
The compound body of roll of bimetallic of the method for the present invention production is made of two kinds of materials, can be according to the different condition of work Depending on, the hardness of body of roll working lining is high, intensity is high, rather than working lining toughness is high, intensity is high and machinability is good, meets work Make demand.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to In the covered the scope of the patents of the present invention.

Claims (9)

1. a kind of compound body of roll production method of bimetallic, which comprises the following steps:
The production of body of roll metal mold;
The body of roll metal mold is placed on centrifuge support roller;
It is poured outer sphere molten metal and forms working lining;
Thermit reaction forms a kind of cermet compositions matter, and the specific gravity of the substance is slightly lighter than the molten metal of subsequent addition;
It is filled with above-mentioned substance and metal liquid, which is that high gold synthesizes part, has high rigidity, high-wearing feature;
Casting inner layer metal liquid forms internal layer after outer sphere molten metal solidification.
2. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: the outer sphere molten metal and institute The junction for stating inner layer metal liquid forms transition zone, and the transition region thickness is 1mm-5mm.
3. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: the casting outer sphere molten metal It also needs that anti-oxidation solvent is added in step.
4. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: with amount of metal in metal mold Increase, internal diameter is gradually reduced, if revolving speed is constant, linear velocity reduces therewith, and liquid metals, which is possible to generate leaching, to be fallen, for it is anti-here It generates, line inner hole linear velocity need to be kept not make big variation, so need to constantly adjust to rated value.
5. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: the outer sphere molten metal is Asia Eutectoid medium alloy steel or hypereutectoid structure steel alloy.
6. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: during the inner layer metal liquid is Carbon and low-alloy structural steel.
7. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: the internal layer turnery processing shape At leaf structure, the leaf structure increases heat dissipation area for radiating.
8. the compound body of roll production method of bimetallic according to claim 7, it is characterised in that: the internal layer is coated with metal Coating, the metal coating have high thermal conductivity and high antioxidant.
9. the compound body of roll production method of bimetallic according to claim 1, it is characterised in that: the body of roll metal mold is ball Black cast iron materials.
CN201810793600.6A 2018-07-19 2018-07-19 A kind of compound body of roll production method of bimetallic CN109047700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810793600.6A CN109047700A (en) 2018-07-19 2018-07-19 A kind of compound body of roll production method of bimetallic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810793600.6A CN109047700A (en) 2018-07-19 2018-07-19 A kind of compound body of roll production method of bimetallic

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Publication Number Publication Date
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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942586B1 (en) * 1963-08-09 1974-11-15
CN85102836A (en) * 1985-04-01 1987-03-11 大连工学院 The method of centrifugal casting bi-metal double-pipe
CN1111291A (en) * 1994-05-06 1995-11-08 北京科技大学 Technology for making corrosion and heat resistant steel lined composite steel pipe
JPH10121186A (en) * 1996-08-23 1998-05-12 Kawasaki Steel Corp Centrifugally cast sleeve roll and its production
CN1302706A (en) * 2001-01-21 2001-07-11 四川恒宏科技钢管有限公司 Centrifugal casting mehtod with graate speed variation for casting steel pipe
CN2702797Y (en) * 2004-05-24 2005-06-01 周国良 Skull-melting centrifugal casting double-metal special steel pipe
CN101530897A (en) * 2008-07-24 2009-09-16 新兴铸管股份有限公司 Bimetal clad pipe blank with transition layer and production method and production device thereof
CN101530898A (en) * 2009-02-17 2009-09-16 新兴铸管股份有限公司 Corrosion-resistant dual metal clad tube blank and manufacturing method thereof
CN101585249A (en) * 2008-05-19 2009-11-25 周国良 A kind of three-layer composite corrugated roller
CN101804450A (en) * 2010-04-08 2010-08-18 新兴铸管股份有限公司 20/321H corrosion-resisting double-metal composite tube and manufacturing process thereof
CN102829258A (en) * 2012-09-11 2012-12-19 江阴东大新材料研究院 Method for producing ceramic-lined aluminum alloy pipe
CN103357855A (en) * 2013-07-11 2013-10-23 扬州金鑫管业有限公司 Technique for manufacturing ceramic composite steel pipe
CN105951004A (en) * 2016-05-09 2016-09-21 吴军旺 Abrasion-resistant corrosion-resistant composite alloy roller barrel and production process
CN107228565A (en) * 2017-06-20 2017-10-03 江苏丰东环保科技股份有限公司 A kind of dual heat resisting steel furnace roller

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942586B1 (en) * 1963-08-09 1974-11-15
CN85102836A (en) * 1985-04-01 1987-03-11 大连工学院 The method of centrifugal casting bi-metal double-pipe
CN1111291A (en) * 1994-05-06 1995-11-08 北京科技大学 Technology for making corrosion and heat resistant steel lined composite steel pipe
JPH10121186A (en) * 1996-08-23 1998-05-12 Kawasaki Steel Corp Centrifugally cast sleeve roll and its production
CN1302706A (en) * 2001-01-21 2001-07-11 四川恒宏科技钢管有限公司 Centrifugal casting mehtod with graate speed variation for casting steel pipe
CN2702797Y (en) * 2004-05-24 2005-06-01 周国良 Skull-melting centrifugal casting double-metal special steel pipe
CN101585249A (en) * 2008-05-19 2009-11-25 周国良 A kind of three-layer composite corrugated roller
CN101530897A (en) * 2008-07-24 2009-09-16 新兴铸管股份有限公司 Bimetal clad pipe blank with transition layer and production method and production device thereof
CN101530898A (en) * 2009-02-17 2009-09-16 新兴铸管股份有限公司 Corrosion-resistant dual metal clad tube blank and manufacturing method thereof
CN101804450A (en) * 2010-04-08 2010-08-18 新兴铸管股份有限公司 20/321H corrosion-resisting double-metal composite tube and manufacturing process thereof
CN102829258A (en) * 2012-09-11 2012-12-19 江阴东大新材料研究院 Method for producing ceramic-lined aluminum alloy pipe
CN103357855A (en) * 2013-07-11 2013-10-23 扬州金鑫管业有限公司 Technique for manufacturing ceramic composite steel pipe
CN105951004A (en) * 2016-05-09 2016-09-21 吴军旺 Abrasion-resistant corrosion-resistant composite alloy roller barrel and production process
CN107228565A (en) * 2017-06-20 2017-10-03 江苏丰东环保科技股份有限公司 A kind of dual heat resisting steel furnace roller

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