CN104416293A - Composite overlaying manufacturing method of casting roller - Google Patents
Composite overlaying manufacturing method of casting roller Download PDFInfo
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- CN104416293A CN104416293A CN201310373697.2A CN201310373697A CN104416293A CN 104416293 A CN104416293 A CN 104416293A CN 201310373697 A CN201310373697 A CN 201310373697A CN 104416293 A CN104416293 A CN 104416293A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a composite overlaying manufacturing method of a casting roller. The method comprises the steps of 1) manufacturing a base body of the casting roller, and processing the surface of the base body; 2) preheating the base body; 3) sequentially manufacturing a bottom layer and a transition layer in the periphery of the base body by overlaying; 4) overlaying surface covering layer on the surface of the transition layer to form the casting roller, wherein the surface covering layer comprises the following chemical elements and components in percentage by mass: 0.3 to 0.8% of C, 1.0 to 4.8% of Mn, 0.4 to 6.0% of Si, 4.0 to 8.0% of Cr, 0.01 to 1.0% of Ti, 2.0 to 10% of V, 2.0 to 10.0% of W, 1.0 to 6.0% of Mo, 2.0 to 5.0% of Co, 0 to 0.4% of Ca, 0 to 0.4% of Ba, 0 to 0.5% of rare earth element, and the balance of Fe and other inevitable impurities; 5) tempering the casting roller by slowly heating and slowly cooling, wherein the tempering is performed under a temperature of 560 to 600 DEG C.
Description
Technical field
The present invention relates to a kind of roll manufacture method, particularly relate to the roll manufacture method of a kind of low speed high temperature, large roll-force.
Background technology
As the important branch of in welding field, composite manufacturing by hard surfacing is a kind of sufacing treatment process method, and it is adopt welding manner to apply at piece surface heap the technical process that one deck has certain performance materials.Composite manufacturing by hard surfacing technique is in roll field, and especially the reparation field of hot roll obtains good development and application.Find after deliberation, the service life that built-up welding process obviously can extend roll is carried out on breaker roll surface, reduces the losing quantity of steel rolling.General employing medium carbon alloy steel is as the matrix material of built-up welding composite roll, after matrix modifier treatment, there is ideal intensity and toughness, in addition, the optimization of built-up welding cover surface material is then conducive to the bond strength improving overlay cladding and basic unit, improve the high temperature wear of roll surface and cool-hot fatigue to interlock performance, surfacing roll in use produces and not easily cracks and roll breakage, extends the service life of built-up welding composite roll.Therefore, surfacing roll is applied in Rolling production and has great importance, also met the energy-saving and emission-reduction requirement of national promotion simultaneously.
Publication number is CN102189102A, publication date is on September 21st, 2011, name is called that the Chinese patent literature of " a kind of conticaster online doctor roll formula large pressure liquid core rolling method " discloses a kind of liquid core rolling method of the large pressure of conticaster online doctor roll formula, the steps include: to carry pressure setting target thickness at duo mill band, Real-time Feedback one-tenth-value thickness 1/10 and detect oil pressure, whether conversion roll-force transfinites, if roll-force does not transfinite, then stable rolling terminates to rolling; If roll-force transfinites, then adjust and rejudge roll-force; If target thickness changes in the operation of rolling, it is poor that milling train process machine calculates variable thickness, and whether the roll gap of adjustment duo mill reaches target thickness and rejudge roll-force and transfinite.
Publication number is CN202021199U, publication date is on November 2nd, 2011, name is called that the Chinese patent literature of " a kind of liquid-core high reduction rolling equipment for continuous casting machines " discloses a kind of liquid-core high reduction rolling equipment for continuous casting machines, it is located at the liquid core rolling district that slab caster level solidifies end latter end, this liquid-core high reduction rolling equipment for continuous casting machines comprises: direct current generator, as the Power output source of liquid-core high reduction rolling equipment for continuous casting machines; High-speed coupling, it is connected with the output of direct current generator; Reductor, it is connected with described high-speed coupling, and the speedy carding process of direct current generator is reduced to low speed; Low-speed shaft coupler, it is connected with described reductor; Pinion stand, its input is connected with described low-speed shaft coupler; Hooks coupling universal coupling, it is connected with the output of pinion stand; Big roller footpath milling train, its roll is horizontally disposed with, and is connected with described Hooks coupling universal coupling, and the topping roll of big roller footpath milling train is connected with a drive unit, topping roll does the pressure action perpendicular to roll axial direction under the driving effect of roller drive set, and the diameter of this roll is 750 ~ 1500mm.
Above-mentioned two China patent document all relates to continuous casting mill, wherein Casting Roller is the nucleus equipment of continuous casting mill, and under Casting Roller is all in comparatively severe working condition, the duty of Casting Roller is specially contact arc length, speed is low, high and the roll-force of Contact Temperature is large etc., and the Casting Roller under such duty very easily cracks the service life significantly shortening roll with roll breakage, thus improves production cost and constrain the scope of application of continuous casting mill.
Summary of the invention
The object of the present invention is to provide a kind of composite manufacturing by hard surfacing Casting Roller method, the Casting Roller that the method manufactures is under the duty of the large pressure of low speed high temperature, possesses excellent high temperature resistant fatigue resistance, Casting Roller compared to routine has longer service life, meanwhile, core of cast milling roller can recycle and the manufacturing cost of Casting Roller is reduced greatly.
In order to achieve the above object, the invention provides a kind of composite manufacturing by hard surfacing Casting Roller method, it comprises:
(1) manufacture the matrix of Casting Roller, the surface of matrix is processed;
(2) preheating is carried out to matrix;
(3) built-up welding prime coat and transition zone successively in matrix periphery, prime coat and transition zone adopt the low-alloy resurfacing welding material with good toughness and tenacity;
(4) form Casting Roller at transition zone surface overlaying capping layer, the chemical element composition quality percentage composition of described capping layer is: C0.3 ~ 0.8%; Mn1.0 ~ 4.8%; Si0.4 ~ 6.0%; Cr4.0 ~ 8.0%; Ti0.01 ~ 1.0%; V2.0 ~ 10%; W2.0 ~ 10.0%; Mo1.0 ~ 6.0%; Co2.0 ~ 5.0%; Ca0 ~ 0.4%; Ba0 ~ 0.4%; Rare earth element 0 ~ 0.5%; Surplus is Fe and other inevitable impurity;
(5) slowly to heat up to Casting Roller and the temper of Slow cooling, temperature is 560 DEG C ~ 600 DEG C.
In composite manufacturing by hard surfacing Casting Roller method of the present invention, by first at the peripheral built-up welding transition zone of roller substrate, then at transition zone surface overlaying capping layer to make Casting Roller to reduce the intensity of Casting Roller, the loss of hardness, the principle of mentioned component design is adopted to be for capping layer: in tool steel or high-speed steel system, to add a large amount of high high-temp stability alloys, to keep the intensity of built-up welding deposited metal.
In the step (5) of the technical program, temper technique is adopted to the Casting Roller through built-up welding, slowly heat up in this process even to ensure Casting Roller heating temperature, slow cooling produces to prevent new stress, temperature is not less than 560 DEG C to give full play to the performance of material, thus make this Casting Roller can carry out work under the environment that temperature is higher, temperature not higher than 600 DEG C to produce sufficient dispersion-strengtherning effect, thus reduce the loss of core of cast milling roller intensity, hardness, and then obtain high temperature resistant, withstand large pressure and the good Casting Roller of fatigue resistance.
In a preferred technical solution of the present invention, when above-mentioned capping layer thickness is greater than 20mm, also comprise step (4a): carry out intermediate heat-treatment between step (4) and step (5), heat treatment temperature is 450 DEG C ~ 500 DEG C.Because Casting Roller volume is comparatively large and capping layer built-up welding thickness is comparatively large, therefore, need when capping layer thickness reaches certain limit to carry out intermediate heat-treatment step, with the structure and properties of stable Casting Roller.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in above-mentioned steps (1), the material of described matrix is 42CrMo steel alloy (composition meets GB3077-1999), 45# carbon steel (composition meets GB/T699-1999) or 50Cr steel alloy (composition meets GB3077-1999).Employing medium carbon alloy steel can improve the bond strength between overlay cladding and matrix.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in above-mentioned steps (1), the forging ratio controlling matrix is not less than 4:1, and carries out modifier treatment to matrix.
In the composite manufacturing by hard surfacing Casting Roller method step (1) described in the technical program, to matrix surface carry out process comprise matrix is detected a flaw, turning, repair welding local defect, guarantee that matrix surface and inside do not have defect.
In composite manufacturing by hard surfacing Casting Roller method of the present invention, the main purpose that step (2) carries out preheating to matrix reduces the cooling velocity of deposited metal and heat affected area in weld deposit process, reduce tendency of hardenability and reduce welding stress, preventing matrix and deposited metal from undergoing phase transition in weld deposit process and cause crackle to produce.
Further, in composite manufacturing by hard surfacing Casting Roller method of the present invention, in above-mentioned steps (3), the hardness controlling transition zone is 43 ~ 52HRC, to ensure that transition zone has good obdurability and excellent Coating combination performance.
Further, in composite manufacturing by hard surfacing Casting Roller method of the present invention, in above-mentioned steps (3), the hardness controlling prime coat is less than 250HB.
Advantageously, in above-mentioned composite manufacturing by hard surfacing Casting Roller method, in step (4), the programming rate of temper is less than 40 DEG C/h.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in step (3), the yield strength σ of capping layer
s> 1300MPa.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in step (3), the section percentage elongation A > 10% of capping layer.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in step (3), the contraction percentage of area Z > 45% of capping layer.
Further, composite manufacturing by hard surfacing Casting Roller method of the present invention, in step (3), the elastic modulus E of capping layer and linear expansion coefficient α
lmeet: 500E α
l+ 300 < σ
s.
It should be noted that, composite manufacturing by hard surfacing Casting Roller method of the present invention also can be used for manufacturing the Heat Working Rolls under other conditions of high temperature.
Composite manufacturing by hard surfacing Casting Roller method of the present invention is implemented simple, operates easy.
The advantage of the Casting Roller obtained by composite manufacturing by hard surfacing Casting Roller method of the present invention is:
1) under the harsh environments of the large pressure of low speed high temperature, excellent high temperature resistant fatigue resistance and good high-temperature wearable damage performance is possessed;
2) compared to existing technology in the Casting Roller that adopts, it has longer service life, reduces the consumption of steel rolling;
3) roller core can recycle, and is easy to carry out Bead weld repair again, improves the utilization rate of roller core, reduces the manufacturing cost of Casting Roller.
Accompanying drawing explanation
Fig. 1 is the process chart of composite manufacturing by hard surfacing Casting Roller method of the present invention under a kind of embodiment.
Fig. 2 is the cross-sectional view of the Casting Roller obtained under a kind of embodiment by composite manufacturing by hard surfacing Casting Roller method of the present invention.
Detailed description of the invention
Below will be described further composite manufacturing by hard surfacing Casting Roller method of the present invention according to specific embodiment and Figure of description, but this explanation does not form inappropriate limitation of the present invention.
Embodiment 1-4
Fig. 1 shows the technological process of composite manufacturing by hard surfacing Casting Roller method of the present invention under a kind of embodiment.As shown in Figure 1, the step of composite manufacturing by hard surfacing Casting Roller method comprises:
1) 42CrMo steel alloy is adopted to manufacture the roller core (one-tenth of 42CrMo steel alloy is respectively in table 1) of this case embodiment; the forging ratio controlling matrix is not less than 4:1; and modifier treatment is carried out to matrix; then the surface of matrix is processed; to guarantee the equal zero defect of matrix surface and inside, and according to the actual requirements turning is carried out to matrix surface:
2) preheating is carried out to matrix: pre-heating temperature elevation speed≤40 DEG C/h, rises to 200-300 DEG C, insulation 20-30 hour, matrix is come out of the stove, at the both sides mounting block guard ring of roller substrate axial direction, then continues to heat up, be warming up to 340-400 DEG C, insulation 26-36 hour, preheating is complete;
3) at outer surface of matrix successively built-up welding prime coat and transition zone, the hardness controlling transition zone is 43 ~ 52HRC, prime coat and transition region thickness adjust according to actual demand, and such as barrel diameter turning is to Φ 1000mm, and in weld deposit process, prime coat 3 thickness can be 2mm ~ 3mm; Transition zone 2 thickness is 4mm ~ 8mm;
4) at transition zone surface overlaying capping layer to form Casting Roller, the chemical element composition quality percentage composition of this capping layer is: C0.3 ~ 0.8%; Mn1.0 ~ 4.8%; Si0.4 ~ 6.0%; Cr4.0 ~ 8.0%; Ti0.01 ~ 1.0%; V2.0 ~ 10%; W2.0 ~ 10.0%; Mo1.0 ~ 6.0%; Co2.0 ~ 5.0%; Ca0 ~ 0.4%; Ba0 ~ 0.4%; Rare earth element 0 ~ 0.5%; Surplus is Fe and other inevitable impurity, and the mass percentage proportioning of each chemical element of capping layer is as shown in table 2, and the correlated performance of capping layer 500 DEG C time is: yield strength σ
s> 1300MPa, section percentage elongation A > 10%, contraction percentage of area Z > 45%, elastic modulus E and linear expansion coefficient α
lmeet: 500E α
l+ 300 < σ
s, the correlation performance parameters of capping layer is as shown in table 3;
5) when capping layer thickness is greater than 20mm, carry out intermediate heat-treatment, heat treatment temperature is 450 DEG C ~ 500 DEG C, is incubated some hours, when capping layer thickness is less than 20mm, then without the need to heat-treating;
6) slowly to heat up to Casting Roller and the temper of Slow cooling, wherein, programming rate is less than 40 DEG C/h, and temperature is 560 DEG C ~ 600 DEG C, is incubated some hours;
7) come out of the stove with after stove cooling, naturally cool to room temperature, above-mentioned fabrication process parameters is specifically as shown in table 3, and final acquisition working diameter is the Casting Roller of 1090mm.
Table 1.42CrMo chemical composition (wt.%)
Table 2 shows the mass percentage proportioning of each chemical element of the capping layer in embodiment 1-4, and table 3 then shows the correlation performance parameters of the capping layer in embodiment 1-4.
Table 2.(wt.%)
The mass percent (wt%) of each composition in table 2 capping resurfacing welding material
(surplus is Fe and other inevitable impurity)
| Embodiment | C | Cr | Mn | Si | W | Ti | V | Cerium | Rare-earth yttrium | Ca | Ba | Mo | Co |
| 1 | 0.3 | 4.0 | 1.0 | 0.4 | 5 | 0.9 | 10 | 0.4 | 0 | 0 | 0 | 6.0 | 2.0 |
| 2 | 0.8 | 8.0 | 4.8 | 6 | 2 | 0.01 | 2.0 | 0 | 0 | 0.37 | 0.36 | 1.0 | 3.0 |
| 3 | 0.6 | 7.0 | 3.2 | 3.0 | 6 | 0.8 | 5.6 | 00 | 0.2 | 0 | 0.08 | 4.2 | 3.7 |
| 4 | 0.4 | 5.0 | 4.2 | 4.5 | 10 | 1.0 | 3 | 0.06 | 0.13 | 0.21 | 0.28 | 1.8 | 5.0 |
The Some Mechanical Properties of the capping resurfacing welding material of embodiment 1 ~ 4 under table 3 different temperatures
Table 4 shows the fabrication process parameters of embodiment 1-3.
Table 4.
In above-mentioned steps 3) and step 4) in, the special equipment of large-scale roller automatical hidden arc overlay welding can be adopted, with multi-machine heads monofilament along roll body circumferencial direction continuous helical mode automatical hidden arc overlay welding; Must carry out continuous sequence in weld deposit process, avoid pausing in midway.In order to prevent occurring " misrun " phenomenon at roll roll body two ends, at roll two ends, namely at the beginning weldering position of roll with eventually weld position, needing along the built-up welding after a week when not moving built-up welding head of its circumferencial direction, then carrying out helix built-up welding.In order to ensure the uniformity of interlayer hardness between transition zone and capping layer, need to make the welding bead position of capping layer built-up welding in step 4) and the welding bead position of transition zone built-up welding mutually to stagger 1/2 weld width.
When after Casting Roller steel rolling a period of time, first turning can fall the fatigue layer of Casting Roller, and then use composite manufacturing by hard surfacing Casting Roller method of the present invention to carry out repair and reconstruction to Casting Roller, increase substantially the utilization rate of Casting Roller like this, greatly save manufacturing cost.
As shown in Figure 2, the outside overlaying structure of the radial direction along this Casting Roller 4 is followed successively by the cross-section structure of the Casting Roller that this case embodiment 1-4 is finally formed: prime coat 3, transition zone 2 and capping layer 1.
It should be noted that above cited embodiment is only specific embodiments of the invention.Obvious the present invention is not limited to above embodiment, and the similar change thereupon made or distortion are that those skilled in the art can directly draw from content disclosed by the invention or be easy to just associate, and all should belong to protection scope of the present invention.
Claims (10)
1. a composite manufacturing by hard surfacing Casting Roller method, it comprises:
(1) manufacture the matrix of Casting Roller, the surface of matrix is processed;
(2) preheating is carried out to matrix;
(3) built-up welding prime coat and transition zone successively in matrix periphery;
(4) form Casting Roller at transition zone surface overlaying capping layer, the chemical element composition quality percentage composition of described capping layer is: C0.3 ~ 0.8%; Mn1.0 ~ 4.8%; Si0.4 ~ 6.0%; Cr4.0 ~ 8.0%; Ti0.01 ~ 1.0%; V2.0 ~ 10%; W2.0 ~ 10.0%; Mo1.0 ~ 6.0%; Co2.0 ~ 5.0%; Ca0 ~ 0.4%; Ba0 ~ 0.4%; Rare earth element 0 ~ 0.5%; Surplus is Fe and other inevitable impurity;
(5) slowly to heat up to Casting Roller and the temper of Slow cooling, temperature is 560 DEG C ~ 600 DEG C.
2. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, it is characterized in that, when capping layer thickness is greater than 20mm, also comprise step (4a): carry out intermediate heat-treatment between step (4) and step (5), heat treatment temperature is 450 DEG C ~ 500 DEG C.
3. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, it is characterized in that, in step (1), the material of described matrix is 42CrMo steel alloy, 45# carbon steel or 50Cr steel alloy.
4. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (1), the forging ratio controlling matrix is not less than 4:1, and carries out modifier treatment to matrix.
5. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (3), the hardness controlling transition zone is 43 ~ 52HRC.
6. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, it is characterized in that, in step (5), the programming rate of temper is less than 40 DEG C/h.
7. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (4), at 500 DEG C, and the yield strength σ of capping layer
s> 1300MPa.
8. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (4), at 500 DEG C, and the section percentage elongation A > 10% of capping layer.
9. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (4), at 500 DEG C, and the contraction percentage of area Z > 45% of capping layer.
10. composite manufacturing by hard surfacing Casting Roller method as claimed in claim 1, is characterized in that, in step (4), at 500 DEG C, and the elastic modulus E of capping layer and linear expansion coefficient α
lmeet: 500E α
l+ 300 < σ
s.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ306654B6 (en) * | 2015-12-18 | 2017-04-19 | Českévysoké Učení Technické V Praze, Fakulta Strojní, Ústav Výrobních Strojů A Zařízení | A method of forming metal parts by means of deposition of the material and a device for implementing this method |
| CN106670672A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Low-temperature overlaying technology of pressure-resistant grinding roller |
| CN106670668A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Surfacing process for anti-corrosion layer of anti-corrosion grinding roller |
| CN107717259A (en) * | 2017-09-25 | 2018-02-23 | 中冶建筑研究总院有限公司 | Composite manufacturing by hard surfacing pinch roll, the capping resurfacing welding material of Wrapping Roll roll surface and technique |
| CN109482843A (en) * | 2018-12-30 | 2019-03-19 | 佳木斯大学 | A kind of bimetallic cast welding composite roll and preparation method thereof |
| CN116060466A (en) * | 2023-02-07 | 2023-05-05 | 中国第一重型机械股份公司 | Roller composite extrusion method and roller |
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| CN109482843A (en) * | 2018-12-30 | 2019-03-19 | 佳木斯大学 | A kind of bimetallic cast welding composite roll and preparation method thereof |
| CN109482843B (en) * | 2018-12-30 | 2020-05-19 | 佳木斯大学 | Bimetal cast-weld composite roller and preparation method thereof |
| CN116060466A (en) * | 2023-02-07 | 2023-05-05 | 中国第一重型机械股份公司 | Roller composite extrusion method and roller |
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