CN107338366A - Dispersion intensifying platinum and platinum composite and preparation method thereof - Google Patents
Dispersion intensifying platinum and platinum composite and preparation method thereof Download PDFInfo
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- CN107338366A CN107338366A CN201710623799.3A CN201710623799A CN107338366A CN 107338366 A CN107338366 A CN 107338366A CN 201710623799 A CN201710623799 A CN 201710623799A CN 107338366 A CN107338366 A CN 107338366A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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Abstract
The invention belongs to technical field of metal material, and in particular to a kind of dispersion intensifying platinum and platinum composite and preparation method thereof.The technical problems to be solved by the invention are to provide the preparation method of a kind of dispersion intensifying platinum and platinum composite, comprise the following steps：Powder is made in dispersion intensifying platinum, platinum respectively, is laid in sintering mold, by sintering, annealing, hot pressing, sizing hot forging, unformed hot forging, surface treatment, the final obtained composite of rolling.The composite has weld, can carry out weld with alloy platinum material, platinum-rhodium alloy material, disperse alloy platinum material and disperse platinum rhodium material, while have the performance such as good elevated temperature strength, inoxidizability, anti-corrosion.
Description
Technical field
The invention belongs to technical field of metal material, and in particular to a kind of dispersion intensifying platinum and platinum composite and its preparation
Method.I.e. by the way that dispersion intensifying platinum and platinum are carried out compound to obtain a kind of advanced composite material (ACM).
Background technology
Platinum and platinum-rhodium alloy are widely used in glass industry.Dispersion-strengtherning alloy platinum material is using metal platinum as matrix, with gold
Belong to zirconium, yttrium, thorium, the new structural material that the oxide such as beryllium is dispersion-strengtherning phase, have good elevated temperature strength, inoxidizability with
And resistance to melting glass attack.However, dispersion intensifying platinum or dispersion intensifying platinum and the composite wood of platinum that existing method is prepared
The weld of material can not meet process requirements, so as to can not platinum dish one layer of disperse material of key component weld with to whole
Individual platinum product vessel structure is strengthened, or internally weld one layer of dispersion-strengtherning platinum material improves platinum dish
Corrosion resistance.
The content of the invention
It is difficult to forge platinum dish for existing dispersion-strengtherning alloy platinum material or the composite of dispersion intensifying platinum and platinum
The problem of connecing reinforcing, the invention provides a kind of dispersion intensifying platinum and platinum composite and preparation method thereof.This method is prepared into
The composite arrived has weld, can enter with alloy platinum material, platinum-rhodium alloy material, disperse alloy platinum material and disperse platinum rhodium material
Row weld, while there is the performance such as good elevated temperature strength, inoxidizability, anti-corrosion.
First technical problem to be solved by this invention is to provide the preparation of a kind of dispersion intensifying platinum and platinum composite
Method.The preparation method comprises the following steps：
1st, dispersion intensifying platinum powder is prepared
1.1st, vacuum melting：By weight percentage, by 0.01~0.6% disperse means, remaining be alloy platinum material mix and
Abundant melting under the conditions of vacuum ＜ 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2nd, cast：By 1.1 gained liquid alloy cast moldings under an inert gas, cast temperature is 1750~2000
℃；
1.3rd, powder processed：Powder is made in material obtained by 1.2 cast moldings；
2nd, platinum powder end is prepared
2.1st, induction melting：Alloy platinum material is sensed under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature
Melting, obtain liquid platinum；
2.2nd, cast：By 2.1 gained liquid platinum cast moldings, cast temperature is 1800~2100 DEG C；
2.3rd, powder processed：Powder is made in material obtained by 2.2 cast moldings；
3rd, dispersion intensifying platinum and platinum composite are prepared
3.1st, it is compound：By 1.3 and 2.3 gained powder overlapping tiles in sintering mould；
3.2nd, sinter：The powder that 3.1 are completed sinters at 1100~1500 DEG C；
3.3rd, anneal oxidation：3.2 gained materials are made annealing treatment at 1100~1400 DEG C；
3.4th, hot pressing：3.3 gained materials are suppressed under 600~1300 DEG C, 4~100MPa of pressure；
3.5th, sizing hot forging：3.4 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, then
Forged on 200~400kg pneumatic hammers from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~
1100 DEG C, forge 50~80% after being 3.4 hot pressing to thickness；
3.6th, unformed hot forging：3.5 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, so
Forged afterwards on 200~400kg pneumatic hammers from six faces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, forge to less than 40% that thickness is 3.2 sintering gained substance thickness；
3.7th, it is surface-treated：The booty of 3.6 gained material surfaces, impurity are removed clean；
3.8th, roll：3.7 gained materials are rolled, in distance objective 0.3~0.8mm of thickness, 1200~
It is heat-treated 15~60 minutes at 1400 DEG C, after heat treatment terminates, then is rolled down to target thickness.
Preferably, in the preparation method step 1.1 of above-mentioned dispersion intensifying platinum and platinum composite, the disperse means be zirconium,
At least one of yttrium, calcium, lanthanum or titanium；Or the alloy that zirconium, yttrium, calcium, lanthanum or titanium are formed with platinum.
Preferably, in the preparation method step 1.1 of above-mentioned dispersion intensifying platinum and platinum composite, the alloy platinum material purity is
More than 99.9%.The alloy platinum material is sponge state, sheet material, sheet material or melted ingot.
Preferably, in the preparation method step 1.1 or 2.1 of above-mentioned dispersion intensifying platinum and platinum composite, during the melting
Between be 1~2 hour.
Preferably, in the preparation method step 1.2 of above-mentioned dispersion intensifying platinum and platinum composite, the inert gas is argon
Gas, pressure are 0.02~0.08MPa.
Preferably, it is described to be cast into the preparation method step 1.2 or 2.2 of above-mentioned dispersion intensifying platinum and platinum composite
Type is to be cast into bar-shaped, a diameter of 30~50mm.
Preferably, in the preparation method step 1.3 or 2.3 of above-mentioned dispersion intensifying platinum and platinum composite, the powder
Granularity is 500 μm of ＜.
Preferably, in the preparation method step 3.1 of above-mentioned dispersion intensifying platinum and platinum composite, the platinum powder account for platinum powder with
The 5~95% of dispersion-strengtherning platinum powder gross weight.
Preferably, in the preparation method step 3.1 of above-mentioned dispersion intensifying platinum and platinum composite, the sintering mould is
Cuboid or other shapes mould.The sintering mould is made up of graphite or other materials not with platinum reaction.
Preferably, it is described to be sintered in vacuum in the preparation method step 3.2 of above-mentioned dispersion intensifying platinum and platinum composite
Carried out under ＜ 10Pa；Or carried out under inert gas shielding, protective gas pressure is 10~300Pa.The inert gas is argon
Gas.
Specifically, in the preparation method step 3.2 of above-mentioned dispersion intensifying platinum and platinum composite, the sintering time is 1
~5 hours.It is preferred that 3~4 hours.
Specifically, in the preparation method step 3.3 of above-mentioned dispersion intensifying platinum and platinum composite, the annealing time
For 1~24 hour.It is preferred that 6~12 hours.
Specifically, in the preparation method step 3.4 of above-mentioned dispersion intensifying platinum and platinum composite, the press time is 1
~2 hours.
Preferably, in the preparation method step 3.8 of above-mentioned dispersion intensifying platinum and platinum composite, the distance objective thickness
For 0.5mm.
Second technical problem to be solved by this invention is to provide the above-mentioned system by dispersion intensifying platinum and platinum composite
The dispersion intensifying platinum that Preparation Method is prepared and platinum composite.
The inventive method powder processed after raw material platinum is refined by special process, and by dispersion-strengtherning alloy platinum material powder,
The dispersion intensifying platinum being prepared after both are compound by specific processing step and condition and platinum composite have can with platinum,
Platinum-rhodium alloy, dispersion intensifying platinum and dispersion intensifying platinum rhodium material carry out the performance of reliable hot forging；Also there is dispersion intensifying platinum simultaneously
The intensity of material, toughness, resistance to Poisoning, low volatility.Gained composite of the invention can be by hot forging mode to platinum device
The key component of ware is strengthened, and the vessel particularly made to disperse material are strengthened, and plays and saves non-key part platinum
The usage amount of gold.One block of 0.3mm thickness forging welding material of forging welding on 1mm thickness platinum channels, the life-span of this part of platinum channel can be extended
50~100%.
Brief description of the drawings
Used rectangular mould 1. bottom plate X1 2. side plate X4 when Fig. 1 is sintered
Fig. 2 composite inner institutional frameworks；Top is the institutional framework of alloy platinum material, and bottom is dispersion-strengtherning alloy platinum material
Institutional framework, both are combined together under microstate
Embodiment
Because existing dispersion-strengtherning alloy platinum material has good elevated temperature strength, inoxidizability and resistance to melting glass attack
Property, in order to improve the performance of vessel, it is desirable in the one layer of dispersion-strengthened material in the surface of vessel or key position weld, but
Existing dispersion-strengthened material or its composite do not have weld, can not be with vessel weld.
In order that dispersion-strengtherning alloy platinum material has weld, the present inventor has found by lot of experiments, can be to dispersion-strengtherning
Alloy platinum material is modified, and is passed to that special technique is compound with alloy platinum material, so as to which answering with weld is prepared
Condensation material.
Specifically, the preparation method of dispersion intensifying platinum and platinum composite, comprises the following steps：
1st, dispersion intensifying platinum powder is prepared
1.1st, vacuum melting：By weight percentage, by 0.01~0.6% disperse means, remaining be alloy platinum material mix and
Abundant melting under the conditions of vacuum ＜ 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2nd, cast：By 1.1 gained liquid alloy cast moldings under an inert gas, cast temperature is 1750~2000
℃；
1.3rd, powder processed：Powder is made in material obtained by 1.2 cast moldings；
2nd, platinum powder end is prepared
2.1st, induction melting：Alloy platinum material is sensed under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature
Melting, obtain liquid platinum；
2.2nd, cast：By 2.1 gained liquid platinum cast moldings, cast temperature is 1800~2100 DEG C；
2.3rd, powder processed：Powder is made in material obtained by 2.2 cast moldings；
3rd, dispersion intensifying platinum and platinum composite are prepared
3.1st, it is compound：1.3 and 2.3 gained powder are laid in sintering mould, one of which is laid on mould, separately
One kind is laid on former；
3.2nd, sinter：The powder that 3.1 are completed sinters at 1100~1500 DEG C；
3.3rd, anneal oxidation：3.2 gained materials are made annealing treatment at 1100~1400 DEG C；
3.4th, hot pressing：3.3 gained materials are suppressed under 600~1300 DEG C, 4~100MPa of pressure；
3.5th, sizing hot forging：3.4 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, then
Forged on 200~400kg pneumatic hammers from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~
1100 DEG C, forge 50~80% after being 3.4 hot pressing to thickness；
3.6th, unformed hot forging：3.5 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, so
Forged afterwards on 200~400kg pneumatic hammers from six faces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, forge to less than 40% that thickness is 3.2 sintering gained substance thickness；
3.7th, it is surface-treated：The booty of 3.6 gained material surfaces, impurity are removed clean；
3.8th, roll：3.7 gained materials are rolled, in distance objective 0.3~0.8mm of thickness, 1200~
It is heat-treated 15~60 minutes at 1400 DEG C, after heat treatment terminates, then is rolled down to target thickness.
In the inventive method 1.1, the disperse means are at least one of zirconium, yttrium, calcium, lanthanum or titanium；Or zirconium, yttrium, calcium,
The alloy that lanthanum or titanium are formed with platinum.
In the inventive method 1.1, the alloy platinum material purity is more than 99.9%.The alloy platinum material is sponge state, sheet material, plate
Material or melted ingot.
In the inventive method 1.1 or 2.1, the smelting time is 1~2 hour.
In the inventive method 1.2, the inert gas is argon gas, and pressure is 0.02~0.08MPa.
In the inventive method 1.2 or 2.2, the cast molding is to be cast into bar-shaped, a diameter of 30~50mm.
In the inventive method 1.3 or 2.3, the granularity of the powder is 500 μm of ＜.
In the inventive method 3.1, the sintering mould is cuboid or other shapes mould.The sintering mould by
Graphite or other materials not with platinum reaction are made.
In the inventive method 3.2, described be sintered under vacuum ＜ 10Pa is carried out；Or carried out under inert gas shielding,
Protective gas pressure is 10~300Pa.The inert gas is argon gas.
In the inventive method 3.8, the distance objective thickness is 0.5mm.
In the inventive method 1.3 or 2.3, the powder processed carries out powder processed using conventional method, and different process has different ginsengs
Number, powder processed can use various ways, and the key of powder is granule size in the inventive method, it is only necessary to ensures the grain of powder
Degree is below 500 μm, but granularity is the smaller the better.
In the inventive method step 2, powder processed need to be refined again to alloy platinum material, the properties of product that otherwise powder processed obtains can not
Meet follow-up requirement.
In the inventive method 3.1, general control platinum powder accounts for the 5~95% of gross weight.The more composite elongation percentage of platinum powder
It is better, but elevated temperature strength, inoxidizability, corrosion resistance can reduce；Dispersion intensifying platinum is then opposite.So can be according to composite wood
Expect the addition of requirement both reasonable designs within the above range of performance.Platinum powder and dispersion-strengtherning platinum powder can be 1 ︰ 1,
95 ︰ 5 can be up to.
It is different according to the different filling thickness of mould in the inventive method 3.1, general filling tiling thickness is 80~
200mm, finished ingot thickness are generally 10~40mm.
In the inventive method 3.2, sintering time is not particularly limited, and when sintering time is long, then can be lost time and energy consumption,
Properties of product are influenceed without special.In order to take into account performance and energy consumption, it is 1~5 hour to control sintering time.It is preferred that 3~4 hours.
In the inventive method 3.3, annealing time is not particularly limited, and when annealing time is long, then can be lost time and energy consumption,
Properties of product are influenceed without special.In order to take into account performance and energy consumption, the annealing time is 1~24 hour.It is preferred that 6~12
Hour.
In the inventive method 3.4, the press time is 1~2 hour.
In the inventive method step 3,3.1 is simply simply overlapping by two kinds of powder tilings；3.2 are made by way of sintering
It is bonded together, thickness change unobvious；3.3 change interior tissue by annealing, thickness change unobvious；3.4
Make its top and bottom more fine and close with respect to previous step by hot pressing mode, but it is fine and close not enough, and now thickness change is larger；3.5
Make it more fine and close in upper and lower surfaces by way of hot forging of shaping, other faces are fine and close compared with previous step, now due to 3.4 hot pressing
It is to carry out hot pressing from upper and lower surfaces, then upper and lower surfaces are relatively more fine and close, if 3.5 are all forged from six faces respectively
Beat, then properties of product can be caused bad, so need to be forged from upper and lower surfaces, while being forged from upper and lower surfaces
Other faces can be promoted fine and close compared with previous step；3.6 to be forged by the method for unformed hot forging from six faces to thickness be 3.2 to burn
When tying less than the 40% of gained substance thickness, density of material has met to require；3.7 bring one into because abovementioned steps are likely to result in
A little impurity, so as to go the removal of impurity；Density is rolled down to required size by 3.8 up to desired material, and operation of rolling product is close
Degree is substantially unchanged, and in order to ensure quality, being rolled down to 0.3~0.8mm of distance objective thickness also needs to be heat-treated, and then rerolls
Make target thickness.By above-mentioned steps, so as to obtain the composite with weld, other performances can be entered according to demand
Row regulation.
Embodiment 1
The ratio in the present embodiment being both platinum powder and dispersion-strengtherning platinum powder is 1 ︰ 1, and in actual production, both ratios can
95 ︰ 5 are up to according to demand.
1st, dispensing：Dispersion-strengtherning platinum powder：Disperse means 0.06% are taken, surplus is platinum ingot of the purity more than 99.9%；Platinum powder：
Platinum ingot casting of the purity more than 99.9%；
2nd, vacuum melting and induction melting：Disperse means, the platinum ingot configured in vacuum melting furnace by 1 is put into vacuum melting furnace
Middle carry out melting, vacuum 3Pa, temperature are 1850 DEG C, and the time is 2 hours, obtains being sufficiently mixed uniform liquid alloy；Sensing
The platinum ingot configured in smelting furnace by 1 carries out melting, and frequency can be selected in 20KHz, and smelting temperature is at 1850 DEG C, and smelting time is 2
Hour；
3rd, it is cast into bar：The liquid alloy and liquid metal that 2 are obtained are cast in ready mold respectively to be cast
Club-shaped material, for bar diameter in 30mm, cast temperature is 1800 DEG C；
4th, powder processed：By the disperse bar of 3 cast moldings, by powder manufacturing apparatus, dispersion intensifying platinum powder, powder grain are prepared into
500 μm of degree, it is stand-by；Platinum rod is then also passed through into powder manufacturing apparatus, is prepared into platinum powder end, 500 μm of powder size is stand-by；
5th, powder stacks：The powder that 4 are obtained is piled up in the in-mold molding of sintering according to 1 ︰ 1 ratio.First will
6kg platinum powders are all deposited in cuboid mould inside, with grafter that surface is floating after all completing, then that 6kg disperses is strong
Change platinum powder and be deposited in cuboid mould inside again, wait after being stuffed entirely with, the thickness of whole cuboid is 120mm, stand-by；
6th, sinter：5 ready powder moulding mixtures are sintered in sintering furnace, vacuum 10Pa, sintering temperature 1100
DEG C, the time is 5 hours；
7th, anneal oxidation is handled：The product that 6 are obtained is made annealing treatment at a temperature of 1400 DEG C, and processing time is 24
Hour；
8th, hot pressing：The product that 7 are obtained, is positioned in hot press, and temperature at 800 DEG C, pressed in 200MPa by pressure
System, the press time was at 2 hours；
9th, sizing hot forging：The product that 8 are obtained carries out annealing 60 minutes at 1400 DEG C, then in 200kg air
Forged, can only be forged from upper and lower surfaces on hammer, 1400 DEG C of initial forging temperature forges number 2 times, final forging temperature 1100
DEG C, forge 2 times, then 3 times the step for repetition, until the fine and close simultaneously ingot shape of product；
10th, unformed hot forging：The product that will be obtained after 9 hot forgings, carries out annealing 60 minutes at 1400 DEG C, Ran Hou
Forged on 200kg pneumatic hammers, now need to forge six faces of spindle, make it all fine and close in all directions, begin forging temperature
1400 DEG C of degree, forges number 2 times, 1100 DEG C of final forging temperature, forges 2 times；The step for repeating, make the thickness (top and bottom of spindle
Between distance) for sintering after 40%；
11st, it is surface-treated：The upper and lower surface of the product obtained by mechanical means such as milling, plane, mills by 10 is handled, will
The removals such as booty, impurity on two sides are clean；
12nd, roll：The product that 11 are obtained is rolled on milling train, when being rolled down to 1.0mm, it is necessary to carry out 1400
DEG C heat treatment, heat treatment time be 60 minutes, after the completion of heat treatment, then be rolled down to the thickness 0.5mm of target plate.
The finished product that the present embodiment is obtained samples, and sampling specification is as follows：Long 100mm, wide 10mm, thick 0.5mm, and in temperature
For 1400 DEG C when do strength test.Under equal stress, composite high temperature elongation percentage of the present invention is common dispersion-strengtherning
12 times of platinum, it is 2 times of common platinum, high temperature service life is 240 times of common platinum.And composite of the present invention has good weld
Performance, can carry out forging welding with dispersion intensifying platinum, and forging welding is carried out in the bending part of vessel prepared by dispersion intensifying platinum thick 1.0mm,
6 months life-spans herein can be extended.
Embodiment 2
The ratio in the present embodiment being both platinum powder and dispersion-strengtherning platinum powder is 3 ︰ 2, and in actual production, the ratio of two can
95 ︰ 5 are up to according to demand.
1st, dispensing：Dispersion-strengtherning platinum powder：Disperse means 0.01% are taken, surplus is platinum ingot of the purity more than 99.9%；Platinum powder：
Platinum ingot casting of the purity more than 99.9%；
2nd, vacuum melting and induction melting：Disperse means, the platinum ingot configured in vacuum melting furnace by 1 is put into vacuum melting furnace
Middle carry out melting, vacuum 10Pa, temperature are 1800 DEG C, and the time is 1 hour, obtains being sufficiently mixed uniform liquid alloy；Sense
The platinum ingot configured in smelting furnace by 1 is answered to carry out melting, frequency can be selected in 5KHz, and smelting temperature is at 1800 DEG C, and smelting time is 2
Hour；
3rd, it is cast into bar：The liquid alloy and liquid metal that 2 are obtained are cast in ready mold respectively to be cast
Club-shaped material, for bar diameter in 40mm, cast temperature is 1800 DEG C；
4th, powder processed：By the disperse bar of 3 cast moldings, by powder manufacturing apparatus, dispersion intensifying platinum powder, powder grain are prepared into
200 μm of degree, it is stand-by；Platinum rod is then also passed through into powder manufacturing apparatus, is prepared into platinum powder end, 200 μm of powder size is stand-by；
5th, powder stacks：The powder that 4 are obtained is piled up in the in-mold molding of sintering according to 3 ︰ 2 ratio.First will
6kg platinum powders are all deposited in cuboid mould inside, with grafter that surface is floating after band all completes, and then switch disperse by 4
Strengthen platinum powder and be deposited in cuboid mould inside again, after band is stuffed entirely with, the thickness of whole cuboid is 100mm, stand-by.
6th, sinter：5 ready powder moulding mixtures are sintered in sintering furnace, vacuum 1Pa, sintering temperature 1500
DEG C, the time is 4 hours；
7th, anneal oxidation is handled：The product that 6 are obtained is made annealing treatment at a temperature of 1100 DEG C, and processing time is 24
Between hour；
8th, hot pressing：The product that 7 are obtained, is positioned in hot press, and temperature at 600 DEG C, pressed in 250MPa by pressure
System, the press time was at 2 hours；
9th, sizing hot forging：The product that 8 are obtained carries out annealing 30 minutes at 1250 DEG C, then 400kg air again
Forged, can only be forged from upper and lower surfaces on hammer, 1250 DEG C of initial forging temperature forges number 1 time, final forging temperature 900
DEG C, forge 1 time, then 2 times the step for repetition, until the fine and close simultaneously ingot shape of product；
10th, unformed hot forging：The product that will be obtained after 9 hot forgings, carries out annealing 30 minutes at 1250 DEG C, Ran Hou
Forged on 400kg pneumatic hammers, now need to forge six faces of spindle, make it all fine and close in all directions.Begin forging temperature
1250 DEG C of degree, forges number 2 times, 900 DEG C of final forging temperature, forges 1~2 time.The step for repeating, make the thickness of spindle (up and down
Distance between face) for sintering after 35%；
11st, it is surface-treated：The upper and lower surface of the product obtained by mechanical means such as milling, plane, mills by 10 is handled, will
The removals such as booty, impurity on two sides are clean；
12nd, roll：The product that 11 are obtained is rolled on milling train, when being rolled down to 0.8mm, it is necessary to carry out 1400
DEG C heat treatment, heat treatment time be 60 minutes, after the completion of heat treatment, then be rolled down to the thickness 0.3mm of target plate.
The finished product that the present embodiment is obtained samples, and sampling specification is as follows：Long 100mm, wide 10mm, thick 0.3mm, and in temperature
For 1400 DEG C when do strength test.Under equal stress, composite high temperature elongation percentage of the present invention is common dispersion-strengtherning
8 times of platinum, it is 1.6 times of common platinum, high temperature service life is 160 times of common platinum.And composite of the present invention has good forge
Performance is connect, forging welding can be carried out with dispersion intensifying platinum, forged in the bending part of vessel prepared by dispersion intensifying platinum thick 0.75mm
Connect, 4 months life-spans herein can be extended.
Claims (10)
1. the preparation method of dispersion intensifying platinum and platinum composite, it is characterised in that：Comprise the following steps：
Step 1, prepare dispersion intensifying platinum powder
1.1st, vacuum melting：By weight percentage, by 0.01~0.6% disperse means, remaining be alloy platinum material mix and in vacuum
Abundant melting under the conditions of degree ＜ 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2nd, cast：By 1.1 gained liquid alloy cast moldings under an inert gas, cast temperature is 1750~2000 DEG C；
1.3rd, powder processed：Powder is made in material obtained by 1.2 cast moldings；
Step 2, prepare platinum powder end
2.1st, induction melting：Alloy platinum material is carried out into sensing under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature to melt
Refining, obtains liquid platinum；
2.2nd, cast：By 2.1 gained liquid platinum cast moldings, cast temperature is 1800~2100 DEG C；
2.3, powder processed：Powder is made in material obtained by 2.2 cast moldings；
Step 3, prepare dispersion intensifying platinum and platinum composite
3.1st, it is compound：By 1.3 and 2.3 gained powder overlapping tiles in sintering mould；
3.2nd, sinter：The powder that 3.1 are completed sinters at 1100~1500 DEG C；
3.3rd, anneal oxidation：3.2 gained materials are made annealing treatment at 1100~1400 DEG C；
3.4th, hot pressing：3.3 gained materials are suppressed under 600~1300 DEG C, 4~100MPa of pressure；
3.5th, sizing hot forging：3.4 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, Ran Hou
Forged on 200~400kg pneumatic hammers from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, forge 50~80% after being 3.4 hot pressing to thickness；
3.6th, unformed hot forging：3.5 gained materials are subjected to annealing 15~60 minutes at 1100~1400 DEG C, Ran Hou
Forged on 200~400kg pneumatic hammers from six faces, 1100~1400 DEG C of initial forging temperature, 900~1100 DEG C of final forging temperature,
Forge to less than 40% that thickness is 3.2 sintering gained substance thickness；
3.7th, it is surface-treated：The booty of 3.6 gained material surfaces, impurity are removed clean；
3.8th, roll：3.7 gained materials are rolled, in distance objective 0.3~0.8mm of thickness, at 1200~1400 DEG C
Lower heat treatment 15~60 minutes, after heat treatment terminates, then is rolled down to target thickness.
2. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 1.1
In, the disperse means are at least one of zirconium, yttrium, calcium, lanthanum or titanium；Or the alloy that zirconium, yttrium, calcium, lanthanum or titanium are formed with platinum.
3. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 1.1
Or in 2.1, the smelting time is 1~2 hour.
4. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 1.3
Or in 2.3, the granularity of the powder is 500 μm of ＜.
5. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 3.1
In, the platinum powder accounts for the 5~95% of platinum powder and dispersion-strengtherning platinum powder gross weight.
6. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 3.2
In, described be sintered under vacuum ＜ 10Pa is carried out；Or carried out under inert gas shielding, protective gas pressure be 10~
300Pa。
7. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 3.2
In, the sintering time is 1~5 hour；It is preferred that 3~4 hours.
8. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 3.3
In, the annealing time is 1~24 hour；It is preferred that 6~12 hours.
9. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite, it is characterised in that：Step 3.4
In, the press time is 1~2 hour.
10. the disperse being prepared by the preparation method of any one of claim 1~9 dispersion intensifying platinum and platinum composite
Strengthen platinum and platinum composite.
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| CN114192599A (en) * | 2021-11-30 | 2022-03-18 | 英特派铂业股份有限公司 | Method for manufacturing platinum or platinum rhodium belt and sheet |
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