CN109706400A - A kind of Hastelloy and carbon steel composite board and its manufacturing method - Google Patents
A kind of Hastelloy and carbon steel composite board and its manufacturing method Download PDFInfo
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- CN109706400A CN109706400A CN201910007611.1A CN201910007611A CN109706400A CN 109706400 A CN109706400 A CN 109706400A CN 201910007611 A CN201910007611 A CN 201910007611A CN 109706400 A CN109706400 A CN 109706400A
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Abstract
The invention discloses a kind of Hastelloys and carbon steel composite board and its manufacturing method, the Hastelloy include with carbon steel composite board include Hastelloy layer, the interlayer interface adjacent with Hastelloy, middle layer, the interlayer interface adjacent with carbon steel and carbon steel layer, the middle layer is located between the interlayer interface and the interlayer interface adjacent with carbon steel adjacent with Hastelloy, and connects the interlayer interface adjacent with Hastelloy and the interlayer interface adjacent with carbon steel.The manufacturing method of Hastelloy and carbon steel composite board disclosed by the invention is compound using vacuum rolling, heat preservation is carried out when blank heating guarantees rolling temperature and the control of the heating temperature temperature difference within limits, and the rolling of multi-pass is carried out, finally obtain the higher Hastelloy of shear strength and carbon steel composite board.
Description
Technical field
The invention belongs to metallic composite and field of engineering technology, and in particular to a kind of Hastelloy and carbon steel composite board
And its manufacturing method.
Background technique
Due to steel and common metal material easily in air oxygen and the substances such as water react and cause itself rotten
Erosion, corrodes even more serious in acid or alkali environment, and corrosion phenomenon destroys integrity of project, causes economic loss.It is single
Steel can not reach the requirement to the working environment of highly corrosion resistant.Hastelloy is a kind of with many excellent properties
Corrosion resistant alloy has good resistivity to oxidisability and the corrosion of medium reproducibility, and there is excellent stress corrosion resistant to open
The ability for splitting ability and good resistance to local corrosion is the corrosion resistant alloy material being widely used.
Hastelloy and carbon steel composite board have both the mechanical property of excellent the corrosion-and high-temp-resistant energy and carbon steel of Hastelloy
Energy and cost advantage can have outstanding resistance to spot corrosion, seam in the state of aoxidizing and also two kinds of environment of original state exist simultaneously
Gap corrosion and the new energy of stress corrosion cracking, can be used for making pipeline or container is used to convey or contain corrosive liquids or gas,
It has broad application prospects paper-making industry, chemical industry, oil industry etc. are multi-field.
In view of the above-mentioned advantage of Hastelloy and carbon steel composite board, develops the Ni-based composite plate of high-performance and develop as composite plate
Important trend.In this regard, have conducted extensive research both at home and abroad, as patent CN2017222.U patent document in provide one kind
The method that explosion Welding prepares C276 Hastelloy and steel composite board.But the Welding that explodes is complicated, to test site and experiment
Environmental requirement is higher, complicated for operation, and risk height has biggish environment and noise pollution, it is more difficult to large-scale application.Patent
CN104525611 has invented a kind of preparation side that pipeline nichrome and carbon steel composite board is prepared using continuous rolling water cooling
Method, this method automation easy to accomplish, to the thickness of material, the ingredient of binder course can be controlled by adjusting rolling technological parameter
System, bond strength high corrosion resistance is good, welds composite plate preparation process compared to explosion, it is easier to industrialization.But its nickel chosen
Ferrochrome based alloy can only fight the corrosion of reducing environment.And use rolling mill practice prepare simultaneously can fight two kinds of redox it is comprehensive
The Hastelloy and steel composite board material of the corrosion in cyclization border become now still in blank and develop the important of high-performance composite plate
Trend.
Summary of the invention
Goal of the invention: the invention discloses a kind of Hastelloy and carbon steel composite board and its manufacturing method, the Hastelloys
With carbon steel composite board shear strength with higher, composite plate middle layer binding performance is preferable.The Hastelloy and carbon steel are compound
The manufacturing method of plate is not polluted the environment using rolling is vacuumized, and can be fought using composite plate made of such technique
The corrosion of two kinds of integrated environments of redox.
Technical solution: a kind of Hastelloy and carbon steel composite board, including Hastelloy layer, the centre adjacent with Hastelloy
Bed boundary, middle layer, the interlayer interface adjacent with carbon steel and carbon steel layer, middle layer are located at the middle layer adjacent with Hastelloy
Between interface and the interlayer interface adjacent with carbon steel, and connect the interlayer interface adjacent with Hastelloy and adjacent with carbon steel
Interlayer interface.
Wherein intermetallic compound has been precipitated in the interlayer interface adjacent with Hastelloy, mainly by Ni, Cr, tri- kinds of Mo
Element composition.
Carbon steel layer mass percentage content is C≤0.22%Mn≤1.8%Si≤0.6%S≤0.050P≤0.045, remaining
Amount is Fe and inevitable impurity element, or adds the V-N steel element V that mass fraction is no more than 0.12% again.
Hastelloy layer mass percentage content is C≤0.02%, 10%≤Cr≤21%, 13%≤Mo≤20%, 3%
≤ Fe≤9%, 3%≤W≤6%, Si≤0.10%, Co≤3.5%, surplus are Ni and inevitable impurity element.
The invention also discloses a kind of Hastelloys and carbon steel composite board preparation method, comprising the following steps:
1) substrate steel sheet or steel billet and multiple material Hastelloy are rolled down to the size of design, to Hastelloy and carbon steel
Surface carries out cleaning treatment, and the brushing high temperature resistant barrier coating on a surface of Hastelloy；Using symmetrical group blank technology
Carbon steel or steel billet are combined with Hastelloy, steel plate or steel billet are placed in outermost, complete the combination of steel plate or steel billet；
2) welding edge sealing is carried out to the steel plate and Hastelloy plate that combine and carries out vacuumize process, obtain composite slab
Material；
3) start hot rolling after keeping the temperature at a temperature of combination blank being placed in 800~1500 DEG C, heated at once after rolling compound
Plate temperature reaches 800~1500 DEG C, then takes out composite plate and rolls, is formed after multi-pass heat preservation-rolling process compound
Plate, wherein single pass reduction ratio is in 10-40%；
4) temperature that the composite plate formed after hot rolling is placed at 500~1100 DEG C is heat-treated.
Specifically, above-mentioned steps 3) in will combination blank be placed in 1100 DEG C at a temperature of keep the temperature after start hot rolling, at this time
The composite plate shear strength highest arrived.
Specifically, heat treatment temperature is specially 1000 DEG C in step 4).Control start rolling temperature and holding temperature in step 3)
Within 50 DEG C, finishing temperature and holding temperature difference are controlled within 100 DEG C for difference control.The vacuum degree that step 2) is vacuum-treated
Not less than 10-2Pa。
The utility model has the advantages that Hastelloy and the Mo element containing high-content in the Hastelloy in carbon steel composite board, Mo element
Addition greatly improve material in strong reduction, the corrosion resistance of Strong oxdiative environment, and improve the slit and corrosion resistant of material,
Two kinds of performances of anticorrosion stress-resistant.Simultaneously because Mo constituent content is higher in selected Hastelloy, it under high temperature environment can be with it
His element forms rich Mo compound, as the long conference of metallic compound reduces the corrosion resistance of Hastelloy.Therefore, for effective
Control the technological design key request for being formed into this patent of the metallic compound of richness Mo.Hastelloy and carbon steel of the invention
Composite board manufacture method strict control vacuum degree, it is therefore prevented that contact of the combination interface with oxygen avoids brittleness oxygen at faying face
The generation of compound.And it devises unique rolling mill practice and interface is released since thermal dilation difference is produced by rolling temperature control
Raw internal stress avoids the generation of faying face defect during the rolling process.Meanwhile it effectively controlling interface element diffusion length
Control is formed in 2~3 μm and metallic compound, realizes composite plate high quality bond.
Detailed description of the invention
Fig. 1 is assembly schematic diagram before composite plate blanks of the present invention roll.
Fig. 2 is the secondary electron photo of Hastelloy of the present invention and carbon steel composite board SEM.
Fig. 3 is Hastelloy prepared by the present invention and carbon steel composite board shear strength curve.
The Hastelloy and carbon steel composite board that Fig. 4, which is rolling temperature of the present invention, to be prepared when being 1000 DEG C, 1100 DEG C, 1200 DEG C
Shear strength correlation curve.
Specific embodiment
Embodiment 1
A kind of manufacturing method of Hastelloy and carbon steel composite board, comprising the following steps:
It 1) will be having a size of 100mm × 120mm × 4mm C-276 Hastelloy and having a size of 100mm × 120mm × 8m carbon
Steel surface polishing is bright and removes surface impurity with pickling；Wherein, carbon steel mass percentage content is C≤0.22%Mn≤1.8%
Si≤0.6%S≤0.050P≤0.045, surplus are Fe and inevitable impurity element；Hastelloy mass percent contains
Amount be C≤0.02%, 10%≤Cr≤21%, 13%≤Mo≤20%, 3%≤Fe≤9%, 3%≤W≤6%, Si≤
0.10%, Co≤3.5%, surplus are Ni and inevitable impurity element.
2) interleaving agent is coated between the contact surface of two layers of Hastelloy, Symmetric Composite is made to base, by steel plate or steel billet
As for outermost.
3) steel billet is combined with carbon steel to the Hastelloy combined and carries out edged item, using vacuum electron beam welding method pair
The steel billet combined, is vacuumized using mechanical pump, and vacuum degree reaches 10-2It is welded to obtain overall thickness group after Pa and is combined into 24mm's
Blank.
4) it will combine and start hot rolling after keeping the temperature 10min at a temperature of blank is placed in 1100 DEG C, mill speed 40m/min,
Bundle amount is 5mm under first passage, heats compound plate temperature after rolling at once and reaches 1100 DEG C, then takes out plate similarly to roll
Speed rolling, it is secondary under the amount of rolling be 4mm, repeat the above process, three times the amount of rolling 5mm down, the amount of rolling is 4mm under four times, final to roll
To with a thickness of 6mm, four sides of rolled plate are cut off, obtain two pieces with a thickness of the Hastelloy and carbon steel composite board of 3mm, Kazakhstan
Alloy and carbon steel interface cohesion are good, and microstructure is as shown in Fig. 2, have excellent performance, and shear strength 422MPa, shearing curve is such as
Shown in Fig. 3.
5) Hastelloy through 1100 DEG C of method hot rollings is respectively placed in the temperature at 500~1100 DEG C with carbon steel composite board
1h is kept the temperature, temperature gradient is 100 DEG C, air-cooled after heat preservation 1h.Composite plate shear strength after heat treatment is as follows:
Table 1
By 1 shear strength data comparison of table it is found that 600 DEG C, 900 DEG C, 1000 DEG C of shear strengths be more than 300Mpa, 1000
DEG C when performance it is best, up to 480MPa, intensity increases 15%.But compared with the interface shear strength of no heat treatment technique
Compared with only 1000 DEG C are heat-treated lower than 1100 DEG C rolleds of boundary strength and are increased.1100 DEG C of rolled interface bond strengths
For 422MPa, the interface bond strength under the heat treatment of other temperature is below 1100 DEG C of rolleds.Mainly since heat treatment adds
Strong intermolecular diffusion, while the raising of temperature also promotes interatomic Reaction-diffusion terms.Element between interface is mutually reciprocal
Inter-metal oxide and brittlement phase hard particles should be generated, the crack initiation when shear stress reaches critical value, brittle property oxidation
Object and metal hard particles cannot consume the energy of crack propagation, namely can not stop the extension of crackle, finally make interface disconnected
Split unsticking.
Embodiment 2
A kind of manufacturing method of Hastelloy and carbon steel composite board, comprising the following steps:
It 1) will be having a size of 150mm × 150mm × 3mm C-276 Hastelloy and having a size of 150mm × 150mm × 9m carbon
Steel surface polishing is bright and removes surface impurity with pickling；Its medium carbon steel mass percentage content is C≤0.22%Mn≤1.8%Si
≤ 0.6%S≤0.050P≤0.045, surplus are Fe and inevitable impurity element；Hastelloy mass percentage content is
C≤0.02%, 10%≤Cr≤21%, 13%≤Mo≤20%, 3%≤Fe≤9%, 3%≤W≤6%, Si≤0.10%,
Co≤3.5%, surplus are Ni and inevitable impurity element.
2) interleaving agent is coated between the contact surface of two layers of Hastelloy, Symmetric Composite is made to base, by steel plate or steel billet
As for outermost.
3) steel billet is combined with carbon steel to the Hastelloy combined and carries out edged item, using vacuum electron beam welding method pair
The steel billet combined, is vacuumized using mechanical pump, and vacuum degree reaches 10-2It is welded after Pa, obtains overall thickness group and be combined into 30mm
Blank.
4) it will combine and start hot rolling after keeping the temperature 10min at a temperature of blank is placed in 1000 DEG C, mill speed 30m/min,
Bundle amount is 4mm under first passage, heats compound plate temperature after rolling at once and reaches 1000 DEG C, then takes out plate similarly to roll
Speed rolling, every time under the amount of rolling be 4mm, by 6 passes, be finally rolling to a thickness of 6mm, cut off the four of rolled plate
A side obtains two pieces with a thickness of the Hastelloy and carbon steel composite board of 3mm, and Hastelloy reaches with carbon steel interface bond strength
270MPa。
Embodiment 3
The influence that present invention is alternatively directed to the manufacturing method rolling temperatures of Hastelloy and carbon steel composite board to bond strength is set
Control experiment is set, steps are as follows for specific experiment:
1) by the C-276 Hastelloy having a size of 150mm*125mm*4mm and having a size of 150mm*125mm*8mmQ235
Surface of low-carbon steel polishing is bright and removes surface impurity with pickling.Hastelloy ingredient such as the following table 2:
2 Hastelloy ingredient (wt%) of table
2) interleaving agent is coated between the contact surface of two layers of Hastelloy, Symmetric Composite is made to base, by steel plate or steel billet
As for outermost.
3) steel billet is combined with carbon steel to the Hastelloy combined and carries out edged item, using vacuum electron beam welding method pair
The steel billet combined, is vacuumized using mechanical pump, and vacuum degree reaches 10-2It is welded after Pa, obtains vacuum combination to base.
4) vacuum combination heats base under the conditions of 1000 DEG C, 1100 DEG C, 1200 DEG C of temperature respectively, setting is initial
Soaking time is 20min.In order to make entire operation of rolling temperature as close possible to initial temperature, returned online between rolling per pass
Furnace keeps the temperature 5min, mill speed 40m/min.Combination slab is kept the temperature at different temperature, studies different temperatures to rolling
The influence of bond strength.Its shear strength correlation curve is as shown in Fig. 4.As shown in table 3, it is manufactured under three kinds of different rolling temperatures
Hastelloy and carbon steel composite board good combination can be achieved, but mechanical property is relatively best at 1100 DEG C, shearing
Intensity reaches 422MPa.Interfacial fracture mode is brittle fracture when rolling temperature is 1000 DEG C, and interfacial fracture mode is at 1200 DEG C
Ductile rupture, 1100 DEG C of fracture mode are then that the two has concurrently.
3 1000 DEG C of table, 1100 DEG C, 1200 DEG C of shear strengths
Hastelloy manufactured by the manufacturing method of Hastelloy and carbon steel composite board disclosed in above three embodiments with
Carbon steel composite board, including Hastelloy layer, the interlayer interface adjacent with Hastelloy, middle layer, the centre adjacent with carbon steel
Bed boundary and carbon steel layer, middle layer be located at the interlayer interface adjacent with Hastelloy and the interlayer interface adjacent with carbon steel it
Between, and connect the interlayer interface adjacent with Hastelloy and the interlayer interface adjacent with carbon steel.During Hastelloy is adjacent
Between bed boundary intermetallic compound has been precipitated, mainly by Ni, Cr, tri- kinds of elements compositions of Mo.
Claims (10)
1. a kind of Hastelloy and carbon steel composite board, it is characterised in that: including Hastelloy layer, the centre adjacent with Hastelloy
Bed boundary, middle layer, the interlayer interface adjacent with carbon steel and carbon steel layer, the middle layer are located at described adjacent with Hastelloy
Interlayer interface and the interlayer interface adjacent with carbon steel between, and connect the interlayer interface adjacent with Hastelloy and with
The adjacent interlayer interface of carbon steel.
2. Hastelloy according to claim 1 and carbon steel composite board, it is characterised in that: during the Hastelloy is adjacent
Between bed boundary intermetallic compound has been precipitated, mainly by Ni, Cr, tri- kinds of elements compositions of Mo.
3. Hastelloy according to claim 1 and carbon steel composite board, it is characterised in that: the carbon steel layer mass percent
Content is C≤0.22%Mn≤1.8%Si≤0.6%S≤0.050P≤0.045, and surplus is Fe and inevitable impurity member
Element, or the V-N steel element V that mass fraction is no more than 0.12% is added again.
4. Hastelloy according to claim 1 and carbon steel composite board, it is characterised in that: the Hastelloy layer quality hundred
Dividing than content is C≤0.02%, 10%≤Cr≤21%, 13%≤Mo≤20%, 3%≤Fe≤9%, 3%≤W≤6%, Si
≤ 0.10%, Co≤3.5%, surplus are Ni and inevitable impurity element.
5. Hastelloy according to claim 1 and carbon steel composite board preparation method, it is characterised in that: including following step
It is rapid:
1) substrate steel sheet or steel billet and multiple material Hastelloy are rolled down to the size of design, to the surface of Hastelloy and carbon steel
Carry out cleaning treatment, and the brushing high temperature resistant barrier coating on a surface of Hastelloy；Using symmetrical blank technology of organizing by carbon
Steel or steel billet are combined with Hastelloy, and steel plate or steel billet are placed in outermost, complete the combination of steel plate or steel billet；
2) welding edge sealing is carried out to the steel plate and Hastelloy plate that combine and carries out vacuumize process, obtain combination blank；
3) start hot rolling after keeping the temperature at a temperature of combination blank being placed in 800~1500 DEG C, heat composite plate temperature after rolling at once
Degree reaches 800~1500 DEG C, then takes out composite plate and rolls, forms composite plate after multi-pass heat preservation-rolling process；
4) temperature that the composite plate formed after hot rolling is placed at 500~1100 DEG C is heat-treated.
6. Hastelloy according to claim 5 and carbon steel composite board preparation method, it is characterised in that: in the step 3)
Start hot rolling after keeping the temperature at a temperature of combination blank is specially placed in 1100 DEG C.
7. Hastelloy according to claim 5 and carbon steel composite board preparation method, it is characterised in that: in the step 4)
Heat treatment temperature is specially 1000 DEG C.
8. Hastelloy according to claim 5 and carbon steel composite board preparation method, it is characterised in that: in the step 3)
It controls start rolling temperature and holding temperature difference controls within 50 DEG C, finishing temperature and holding temperature difference control within 100 DEG C.
9. Hastelloy according to claim 5 and carbon steel composite board preparation method, it is characterised in that: the step 3) is single
Percentage pass reduction is in 10-40%.
10. Hastelloy according to claim 5 and carbon steel composite board preparation method, it is characterised in that: the step 2)
The vacuum degree of vacuum processing is not less than 10-2Pa。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222187A (en) * | 2020-09-22 | 2021-01-15 | 武汉科技大学 | Preparation method of high-impact-toughness nickel-based alloy composite material |
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Effective date of registration: 20190920 Address after: 211164, Jiangsu, Nanjing province Jiangning District streets industrial concentration zone, 116 North Road, Qing margin Applicant after: Nanjing Youtian Metal Technology Co., Ltd. Address before: 150000 No. 145, Nantong Avenue, Nangang District, Heilongjiang, Harbin Applicant before: Harbin Engineering Univ. Applicant before: Nanjing Youtian Metal Technology Co., Ltd. |
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