CN206509329U - A kind of hard alloy compound roller - Google Patents
A kind of hard alloy compound roller Download PDFInfo
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- CN206509329U CN206509329U CN201720202507.4U CN201720202507U CN206509329U CN 206509329 U CN206509329 U CN 206509329U CN 201720202507 U CN201720202507 U CN 201720202507U CN 206509329 U CN206509329 U CN 206509329U
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- hard alloy
- inner sleeve
- overcoat
- intermediate layer
- compound roller
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Abstract
The application is related to metal-pressed machine technical field, and in particular to a kind of hard alloy compound roller.Because the thermal coefficient of expansion of different materials is differed, when progress the technique such as is heated and is combined, there is the phenomenon being stripped at combination interface in the adhesion strength for becoming loose, reducing at combination interface that the meeting having at combination interface is opened.The application provides a kind of hard alloy compound roller, including hard alloy overcoat, intermediate layer and hard alloy inner sleeve；Hard alloy outside of inner cover is provided with the intermediate layer that combination is electroplated with it, and hard alloy overcoat is arranged at outside intermediate layer, and hard alloy overcoat passes through intermediate layer and hard alloy inner sleeve metallurgical binding；Hard alloy inner sleeve composition is close or identical with hard alloy overcoat.Inner sleeve and overcoat in the application, with same or like thermal coefficient of expansion, can significantly improve or eliminate the defect that foreign material causes combination interface using the same or like Hardmetal materials of composition.
Description
Technical field
The application is related to metal-pressed machine technical field, and in particular to a kind of hard alloy compound roller.
Background technology
Roll wants consumption in operation part as rolling mill main, all has directly influence on product quality, production efficiency etc..Hard
Alloy roller compared to other materials roll, with hardness is high, compression strength is big, wearability is good, good corrosion resistance, friction system
Small, pyroconductivities are low for number, service life length, rolling Product Precision it is high, the advantages of quality is good, it has also become wire rod rolls face, especially
Be high-speed rod-rolling mill finish rolling, pre- finish rolling, in the main roll material that rolls.Per reconditioning once, single groove crosses steel to hard alloy roll
Amount reaches more than 800~1200 tons, is 10 times of nodular cast iron roller.And hard alloy roll can increase reconditioning number of times, and roll
The steel surface finish gone out is good.But carbide roll ring weight is big simultaneously, difficulty of processing is big, percent defective is high, alloy resource is wasted
Greatly, price height, shock resistance and poor seismic behavior, are influenceed by the mill speed of high speed, draught pressure and thermal shock load,
It is also easy to produce crackle and extends rapidly, causes surface to peel off and the generation of broken roller.
How to reduce the price of carbide roll ring, reduce the attention that alloy consumption has caused industry, for this disadvantage,
More universal hard alloy compound roller is used at present, and outer layer uses hard alloy, and internal layer uses the preferable high strength steel of toughness,
Formed between ectonexine using adhesive bond, such production technology reduces the usage amount of hard alloy, so as to reduce production
Cost.But because the thermal coefficient of expansion of different materials is differed, the thermal coefficient of expansion of especially hard alloy is relatively small, is entering
When the techniques such as row heating are combined, what the meeting having at combination interface was opened becomes loose, is formed very at combination interface
Big residual stress, reduces the adhesion strength at combination interface, occurs the phenomenon being stripped at combination interface.
Utility model content
The purpose of the application be in order to solve above-mentioned hard alloy compound roller due to different materials thermal coefficient of expansion not
With and being opened of to have at combination interface in process becomes loose, the bonding reduced at combination interface is strong
Degree, easily occurs in the problem of being stripped at combination interface.
Therefore, the utility model embodiment provides following technical scheme：A kind of hard alloy compound roller, including hard
Alloy overcoat, intermediate layer and hard alloy inner sleeve；The hard alloy outside of inner cover is provided with the intermediate layer that combination is electroplated with it,
The hard alloy overcoat is arranged at outside the intermediate layer, and the hard alloy overcoat passes through the intermediate layer and the hard
Alloy inner sleeve metallurgical binding；
The hard alloy inner sleeve composition is close or identical with the hard alloy overcoat.
Alternatively, the hard alloy overcoat is interference fitted with the hard alloy inner sleeve electroplated；The hard is closed
Golden inner sleeve is reusable.
Alternatively, the magnitude of interference of the interference fit is 0~0.05mm.
Alternatively, 10~30mm of wall thickness of the hard alloy overcoat, and no less than roll abrasion loss.
Alternatively, the mass fraction of intermediate layer institute cupric is more than 99.7%, and the wall thickness 0.05mm in the intermediate layer~
0.20mm。
Alternatively, wall thickness 20mm~40mm of the hard alloy inner sleeve.
The technical scheme that the utility model embodiment is provided includes following beneficial effect：The application hard alloy inner sleeve and hard
Matter alloy overcoat, can be very big with same or like thermal coefficient of expansion using the same or like Hardmetal materials of composition
Ground improves or eliminated the defect that foreign material causes combination interface because thermal coefficient of expansion is inconsistent.Because hard alloy overcoat is logical
Intermediate layer and hard alloy inner sleeve metallurgical binding are crossed, old roller set can be used to be processed for hard alloy inner sleeve, reused, greatly
Hardmetal materials are saved on ground, reduce manufacturing cost.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it should be apparent that, for those of ordinary skills, do not paying creative labor
On the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of hard alloy compound roller structural representation that Fig. 1 provides for the utility model embodiment；
Fig. 1 symbol is expressed as：
1- hard alloy overcoats, 2- intermediate layers, 3- hard alloy inner sleeves.
Embodiment
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets the utility model reality
Example is applied, and for explaining principle of the present utility model together with specification.
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, for ordinary skill people
For member, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Roll barrel outer layer and core (including roll neck part) make of unlike material, are metallurgical binding between two kinds of materials
Roll, composite roll can meet requirement of the milling train to performances such as body of roll wearability, thermal fatigue resistances, while in turn ensure that core
With the obdurability of roll neck.The specific requirement that outer layer and the main frame according to where roll of core material are used for performance is selected.
The cladding material of conventional composite roll has chilled cast iron, unbounded chilled cast iron, spheroidal graphite cast-iron, rich chromium cast iron, steel alloy, half
Steel, high chrome, high-speed steel, hard alloy etc.；Core common used material is gray cast iron, spheroidal graphite cast-iron, cast steel, forged steel.
Hard alloy is the one kind being made up of the hard compounds and binding metal of refractory metal of powder metallurgical technique
Alloy material.
A series of premium properties such as hard alloy has high, wear-resisting hardness, intensity and toughness is preferable, heat-resisting, corrosion-resistant, it is special
It is not its high rigidity and wearability, is held essentially constant at a temperature of 500 DEG C yet still have very high at 1000 DEG C
Hardness.
In machining and manufacturing process, the mated condition of two or more than two parts can be divided into roughly slip and match somebody with somebody
Many grades such as conjunction, interference fits and tight fit, are interference fitted the one kind belonged in tight fit, that is to say, that the diameter of axle matched
(key is wide) is greater than aperture (keyway), it is necessary to entered using special tool(s) extruding, or using the characteristic of rising-heat contracting-cold, by hole (key
Groove) heating, borehole enlargement is taken advantage of, is set on axle rapidly, two parts just tightly match somebody with somebody integrator after contraction to be cooled.
Metallurgical binding (metallurgical bond) refers between the interface of two pieces metal formed by atom phase counterdiffusion
With reference to.This combination either connection status, or in the presence of temperature or pressure (or temperature and pressure collective effect
Under) formed.
The interface of composite is formed after metallurgical binding, there is good processing performance.Various hot and cold pressure can be carried out to add
Work is molded, and can be welded and is machined.The cold composite that this, which is interface, combines for mechanical bond or Van der Waals force is not
It can compare.
Embodiment one
Referring to Fig. 1, a kind of hard alloy compound roller provided for the utility model embodiment, including hard alloy overcoat
1st, intermediate layer 2 and hard alloy inner sleeve 3；The intermediate layer 2 that combination is electroplated with it, institute are provided with outside the hard alloy inner sleeve 3
Hard alloy overcoat 1 is stated to be arranged at outside the intermediate layer 2, the hard alloy overcoat 1 by the intermediate layer 2 with it is described hard
The metallurgical binding of matter alloy inner sleeve 3；
The composition of hard alloy inner sleeve 3 is close or identical with the hard alloy overcoat 1.
Hard alloy inner sleeve 3 and hard alloy overcoat 1 in the hard alloy compound roller being related in the application are used into
The same or like Hardmetal materials of part, with same or like thermal coefficient of expansion, can significantly improve or eliminate xenogenesis
Material causes the defect of combination interface because thermal coefficient of expansion is inconsistent.
Embodiment two
Referring to Fig. 1, a kind of hard alloy compound roller provided for the utility model embodiment, including hard alloy overcoat
1st, intermediate layer 2 and hard alloy inner sleeve 3；The intermediate layer 2 that combination is electroplated with it, institute are provided with outside the hard alloy inner sleeve 3
Hard alloy overcoat 1 is stated to be arranged at outside the intermediate layer 2, the hard alloy overcoat 1 by the intermediate layer 2 with it is described hard
The metallurgical binding of matter alloy inner sleeve 3；
The composition of hard alloy inner sleeve 3 is close or identical with the hard alloy overcoat 1.
Alternatively, the hard alloy overcoat 1 is interference fitted with the hard alloy inner sleeve 3 electroplated；The hard
Alloy inner sleeve 3 is reusable.
Alternatively, the magnitude of interference of the interference fit is 0.01mm.
The hard alloy compound roller being related in the application has overcoat, intermediate layer 2 and inner sleeve.The overcoat closes for hard
Golden material, its composition is determined according to requirements, mainly as working lining；The intermediate layer 2 is binder course, is closed using copper or copper
Golden material；The inner sleeve is hard alloy roller set, and its composition is same or like with overcoat, plays a supportive role, the chi according to roll
It is very little it needs to be determined that, inner sleeve is reusable.The He of hard alloy inner sleeve 3 in the hard alloy compound roller being related in the present embodiment
Hard alloy overcoat 1, can pole with same or like thermal coefficient of expansion using the same or like Hardmetal materials of composition
The earth improves or eliminated the defect that foreign material causes combination interface because thermal coefficient of expansion is inconsistent.Due to hard alloy overcoat
By intermediate layer and the metallurgical binding of hard alloy inner sleeve 3, old roller set can be used to be processed for hard alloy inner sleeve 3, recycling,
Hardmetal materials are greatly saved, manufacturing cost is reduced.
Embodiment three
Referring to Fig. 1, a kind of hard alloy compound roller provided for the utility model embodiment, including hard alloy overcoat
1st, intermediate layer 2 and hard alloy inner sleeve 3；The intermediate layer 2 that combination is electroplated with it, institute are provided with outside the hard alloy inner sleeve 3
Hard alloy overcoat 1 is stated to be arranged at outside the intermediate layer 2, the hard alloy overcoat 1 by the intermediate layer 2 with it is described hard
The metallurgical binding of matter alloy inner sleeve 3；
The composition of hard alloy inner sleeve 3 is close or identical with the hard alloy overcoat 1.
Alternatively, the hard alloy overcoat 1 is interference fitted with the hard alloy inner sleeve 3 electroplated；The hard
Alloy inner sleeve 3 is reusable.
Alternatively, the magnitude of interference of the interference fit is 0.02mm.
Alternatively, the wall thickness 15mm of the hard alloy overcoat 1, and no less than roll abrasion loss.
Alternatively, the mass fraction of 2 cuprics in intermediate layer is more than 99.7%, the wall thickness 0.11mm in the intermediate layer.
Alternatively, the wall thickness 25mm of the hard alloy inner sleeve 3.
The hard alloy compound roller being related in the application has overcoat, intermediate layer 2 and inner sleeve.The overcoat closes for hard
Golden material, its composition is determined according to requirements, mainly as working lining, and its thickness is 15mm, and no less than roll abrasion loss；
The intermediate layer 2 is binder course, and using copper or Cu alloy material, its Main Ingredients and Appearance (quality %) is：Cu>99.7 and other, wall
Thickness is 0.11mm；The inner sleeve is hard alloy roller set, and its composition is same or like with overcoat, plays a supportive role, wall thickness 25mm,
According to roll size it needs to be determined that, inner sleeve is reusable.It is hard in the hard alloy compound roller being related in the present embodiment
Matter alloy inner sleeve 3 and hard alloy overcoat 1 are using the same or like Hardmetal materials of composition, with same or like heat
The coefficient of expansion, can significantly improve or eliminate the defect that foreign material causes combination interface because thermal coefficient of expansion is inconsistent.By
In hard alloy overcoat 1 by intermediate layer and the metallurgical binding of hard alloy inner sleeve 3, old roller can be used to pack into for hard alloy inner sleeve 3
Hardmetal materials are greatly saved in row processing, recycling, reduce manufacturing cost.
Example IV
The utility model embodiment also provides a kind of hard alloy compound roller manufacture method, the manufacture method include with
Lower step：
(1) hard alloy inner sleeve 3 and hard alloy overcoat 1 are processed by preliminary dimension；
(2) outer round surface of hard alloy inner sleeve 3 is pre-processed, including it is polishing, cleaning, ultrasonic wave cleaning, pickling, clear
Wash, sealing of hole and reduction；
(3) by the cylindrical plating intermediate layer of hard alloy inner sleeve 3, thickness 0.11mm is plated；
(4) the hard alloy inner sleeve 3 and hard alloy overcoat 1 that have electroplated intermediate layer 2 are interference fitted, using heat
Dress, is first heated to 250 DEG C by hard alloy overcoat 1, then carries out interference fit suit, the magnitude of interference is 0.01mm；
(5) composite roll for installing set is put into vacuum furnace, is slowly warming up to 1110 DEG C, is incubated 1.5h, so
Furnace cooling afterwards.
Alternatively, the hard alloy overcoat 1 is made up of the raw material of following parts by weight：65 parts of tungsten carbide, 35 parts of cobalt；It is described
Hard alloy inner sleeve 3 is made up of the raw material of following parts by weight：55 parts of tungsten carbide, 45 parts of cobalt.
It is that 285mm, internal diameter are 235.2mm, are highly in 95mm, hard alloy to be set to external diameter in the application outside hard alloy
It is that 235mm, internal diameter are 160mm, are highly 95mm to be set to external diameter, overcoat hard alloy composition be 65% tungsten carbide, cobalt and other
Trace element, inner sleeve hard alloy composition for 55% tungsten carbide, cobalt and other trace element, inner sleeve and overcoat hard alloy into
Part can be determined according to specifically used requirement.
The outer round surface of hard alloy inner sleeve 3 is pre-processed, polishing first, remove the oxide layer on surface, then
Cleaned with deionized water ultrasonic wave, the time is 10min.Then the pickling 1min in 15% sulfuric acid, then puts hard alloy
1h is boiled in the ionized water of boiling and carries out sealing pores, the acid solution penetrated into during pickling is fully diluted.Then with 0.5%
0.5min is weakened in the weak etch solution that sulfuric acid is made, then rapid cleanup, upper hanger enters groove preplating.
To the outer round surface electro-coppering of hard alloy inner sleeve 3, thickness of coating 0.11mm；First preplating, preplating uses cyanide electroplating,
Form copper plate；Pre-plating solution include following composition：20g/L cuprous cyanides, 30g/L Cymags, 4g/L sodium hydroxides；Pre-plating solution
20 DEG C, using air stirring, current density is 0.4A/dm, and anode is red copper, electroplating time 20s；Plating is using sulfate plating
Copper, plating solution includes following composition：170g/L copper sulphate, 55g/L sulfuric acid, 0.6mg/L crystal violets, 0.5g/L polyethylene glycol,
0.3mg/LOP emulsifying agents, 40mg/L Cl-；20 DEG C of plating solution, using air stirring, current density is 2A/dm, and anode is red copper,
Electroplate 6min.External diameter is set in hard alloy after copper facing for 235.11mm.
, first will be outer using hot charging by hard alloy overcoat 1 together with having electroplated the interference of hard alloy inner sleeve 3
Set is heated to 250 DEG C, then is set with.
The composite roll that set is installed is put into vacuum furnace, is slowly warming up to 1110 DEG C, then is incubated 1.5h, then
Furnace cooling.
The thickness being related in the application is wall thickness, namely hard alloy overcoat 1, intermediate layer 2 and the hard being previously mentioned
The thickness of alloy inner sleeve 3 is all the difference of its internal diameter and external diameter.
Described above is only the embodiment of the utility model embodiment, make skilled artisans appreciate that or
Realize the utility model.A variety of modifications to these embodiments will be apparent to one skilled in the art, this
General Principle defined in text can be in the case where not departing from spirit or scope of the present utility model, in other embodiments
Realize.Therefore, the utility model is not intended to be limited to the embodiments shown herein, and be to fit to it is disclosed herein
The principle most wide scope consistent with features of novelty.
It should be appreciated that the content that the application is not limited to be described above and is shown in the drawings, and can
To carry out various modifications and changes without departing from the scope.Scope of the present application is only limited by appended claim.
Claims (6)
1. a kind of hard alloy compound roller, it is characterised in that including hard alloy overcoat, intermediate layer and hard alloy inner sleeve；
The hard alloy outside of inner cover is provided with the intermediate layer that combination is electroplated with it, and the hard alloy overcoat is arranged at the centre
Layer is outside, and the hard alloy overcoat passes through the intermediate layer and the hard alloy inner sleeve metallurgical binding；
The hard alloy inner sleeve composition is close or identical with the hard alloy overcoat.
2. hard alloy compound roller as claimed in claim 1, it is characterised in that the hard alloy overcoat and the plating
Good hard alloy inner sleeve interference fit；The hard alloy inner sleeve is reusable.
3. hard alloy compound roller as claimed in claim 2, it is characterised in that the magnitude of interference of the interference fit is 0~
0.05mm。
4. hard alloy compound roller as claimed in claim 3, it is characterised in that the wall thickness 10 of the hard alloy overcoat~
30mm, and no less than roll abrasion loss.
5. hard alloy compound roller as claimed in claim 4, it is characterised in that the mass fraction of intermediate layer institute cupric
More than 99.7%, the wall thickness 0.05mm~0.20mm in the intermediate layer.
6. such as hard alloy compound roller according to any one of claims 1 to 5, it is characterised in that in the hard alloy
Wall thickness 20mm~40mm of set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202507.4U CN206509329U (en) | 2017-03-03 | 2017-03-03 | A kind of hard alloy compound roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202507.4U CN206509329U (en) | 2017-03-03 | 2017-03-03 | A kind of hard alloy compound roller |
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| CN206509329U true CN206509329U (en) | 2017-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623435A (en) * | 2017-03-03 | 2017-05-10 | 湖南三泰新材料股份有限公司 | Hard alloy compound roller and manufacturing method thereof |
-
2017
- 2017-03-03 CN CN201720202507.4U patent/CN206509329U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623435A (en) * | 2017-03-03 | 2017-05-10 | 湖南三泰新材料股份有限公司 | Hard alloy compound roller and manufacturing method thereof |
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