CN107541618A - A kind of hot pressed sintering mould alloy material - Google Patents
A kind of hot pressed sintering mould alloy material Download PDFInfo
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- CN107541618A CN107541618A CN201710947182.7A CN201710947182A CN107541618A CN 107541618 A CN107541618 A CN 107541618A CN 201710947182 A CN201710947182 A CN 201710947182A CN 107541618 A CN107541618 A CN 107541618A
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Abstract
The invention discloses a kind of hot pressed sintering mould alloy material, belong to metallurgical technology field.The chemical composition of alloy material of the present invention forms and its mass percent is：C：0.01~0.06%, Si≤0.2%, Mn≤0.2%, P≤0.01%, S≤0.002%, Al：1.20~2.0%, Nb：2.20~2.60%, Ti：2.30~2.60%, Mo：8~10%, Cr：12~15%, Fe：22.0~25.0%, B≤0.01%, Cu≤0.07%, V≤0.07%, W≤0.2%, Co≤0.2%, remaining is Ni and inevitable impurity.Alloy material matrix of the present invention is homogeneous austenite structure, and the gentle high-temperature behavior of usable material chamber is excellent.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of hot pressed sintering mould alloy material.
Background technology
Hot pressed sintering is one kind important in powder metallurgical production technique, by being sintered in metal powder material during apply
Certain pressure, obtain the product of high consistency.Because the technique can shorten the process time compared with normal pressure-sintered, improve
Product combination property, therefore it is increasingly being applied to high-end circular saw, brill first-class product knife in diamond tool manufacturing industry
The production of head, and show the trend being in industry widely popularized.
In diamond tool manufacturing industry, production of the hot pressed sintering mould to diamond segment product is most important, generally makes
Mold materials are graphite material, and it is prominent to have that linear expansion coefficient is low, tolerable temperature is high, elevated temperature strength is high, purchase cost is low
Go out advantage, especially its intensity can increase as temperature raises, and may insure not lose under the process conditions of HTHP
Effect.However, graphite material itself comes with some shortcomings again, as plasticity is poor, poor toughness, service life are short and unrepairable, lead
Cause that mould manufacturing process is single, is unfavorable for producing that the cutter head of complicated shape, replacement frequency are high, the problems such as being difficult to recycle.
Chinese patent CN102886519A discloses a kind of supermatic pressing sintering, solves conventional thermocompression burning
Equipment space is big, heat utilization rate is low, noxious fume gas unrestrictedly diffuses in knot production and manpower takes more ask
Topic, drastically increases production efficiency.The hot-press sintering equipment is supporting using the progress of metal material mould, makes product-forming no longer
Limited by graphite jig, further improve product structure for diamond tool manufacturing enterprise and established hardware foundation, and gold
The reusable edible of category material is with greatly developing green economy, recycling economy perfection agrees with.However, hot-pressing sintering technique itself
Feature proposes very high requirement to Metal mould material, as high rigidity, high intensity, good high-temperature stability and high temperature are tough
Property etc..Although the materials such as traditional hot die steel, ferritic heat-resistant steel can meet hot pressed sintering in certain temperature range
Production, but when temperature is further lifted（800~900 DEG C）When, above-mentioned material is just quickly invalidated due to heat resistance difference；Heat resistance
Although higher high temperature alloy can realize stable military service in the Process temperature ranges of hot pressed sintering, due to hard at room temperature
Degree is universal relatively low（Typically not greater than 45HRC）, it is easy to that serious damage occurs during die-filling, the cutter head of production produces burr
Defect.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of hot pressed sintering mould alloy material.For diamond segment
The outstanding problem that hot pressed sintering production is restricted by mold materials, designs a kind of heat for being adapted to use at a temperature of 800~900 DEG C
Sintering mold alloy material, the characteristics of having high heat-intensity, high-ductility concurrently are pressed, and room temperature hardness is higher than conventional high temperature alloy, with
Meet the technological requirement of hot pressed sintering production diamond segment.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of hot pressed sintering mould alloy material
Material, the chemical composition composition and its mass percent of the alloy material are：C：0.01~0.06%, Si≤0.2%, Mn≤
0.2%, P≤0.01%, S≤0.002%, Al：1.20~2.0%, Nb：2.20~2.60%, Ti：2.30~2.60%, Mo：8~
10%, Cr：12~15%, Fe：22.0~25.0%, B≤0.01%, Cu≤0.07%, V≤0.07%, W≤0.2%, Co≤0.2%, its
Remaining is Ni and inevitable impurity.
C mass percent is in alloy material of the present invention：0.03~0.05%.
B mass percent is in alloy material of the present invention：0.007~0.01%.
Cu mass percent is in alloy material of the present invention：0.03~0.07%.
W and Co mass percent sum is in alloy material of the present invention：W+Co≤0.3%.
Hardness number is in 47~54HRC after alloy material Ageing Treatment of the present invention.
Alloy material of the present invention at room temperature tensile strength be 1420~1470MPa, yield strength be 1116~
1124MPa, elongation percentage are 6~7%.
Tensile strength is 945~969MPa at 800 DEG C of alloy material of the present invention, and yield strength is 838~848MPa,
Elongation percentage is 19.76~22.34%.
Tensile strength is 765~802MPa at 900 DEG C of alloy material of the present invention, and yield strength is 730~737MPa,
Elongation percentage is 23.79~27.72%.
The present invention uses vaccum sensitive stove, melting is carried out according to the alloy material of above-mentioned chemical composition proportioning, in pig mold
Ingot casting is cast into, obtains forging material through hydraulic press cogging, solution treatment and Ageing Treatment is passed through in silicon-carbon bar type heating furnace, is obtained
Final alloy material.
Hot pressed sintering mould of the present invention is referred to alloy material detection method：GB/T 14203 2016 《Spark discharge is former
Sub- emission spectrometry method general rule》.
It is using beneficial effect caused by above-mentioned technical proposal：1st, alloy material matrix of the present invention is uniformly difficult to understand
Family name's body tissue, the MC types carbide and intermetallic compound Ni formed by elements such as Mo, Nb, Ti3Al disperse educt rises
Crystal boundary toughening is realized in the precipitation of grain boundaries to precipitation enhancement, while by boride, avoids sending out in grain boundaries under high temperature
Raw intergranular crack.2nd, the gentle high-temperature behavior of usable material chamber of the present invention is excellent, and hardness number is in 47~54HRC after Ageing Treatment, at room temperature
Tensile strength and yield strength are respectively 1420~1470MPa, 1116~1124MPa, and elongation percentage is 6~7%；Tension at 800 DEG C
Intensity is respectively 945~969MPa, 838~848MPa with yield strength, and elongation percentage is 19.76~22.34%；Tension at 900 DEG C
Intensity is respectively 765~802MPa, 730~737MPa with yield strength, and elongation percentage is 23.79~27.72%.3rd, material of the present invention
Material is on active service as hot pressed sintering mold materials, and more traditional hot die steel service life extends more than 2 times, greatly reduces due to mould
The time that tool failure is changed the mold, improve the operating efficiency of hot pressed sintering production；Further, since material at high temperature excellent performance,
Can under the conditions of no more than 900 DEG C normal service so that sintering temperature and the press power of hot pressed sintering production are no longer influenced by mould
Have the restriction of material, good condition is created for the upgrading of downstream user production technology.
Brief description of the drawings
Fig. 1 is 200 times of metallographic structure figures of alloy material in the embodiment of the present invention 1.
Embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, concretely comprising the following steps：
By sheet nickel（Ni9920）, pure iron（YT01）, metallic cobalt（Co9980）, ferrotungsten（FeW80-C）, ferro-niobium（FeNb60A）、
Crome metal（JCR99A）, molybdenum-iron（FeMo55-B）It is placed in as furnace charge in vaccum sensitive stove, initial power 50KW, after half an hour
Power ascension after 45 minutes, power is adjusted to 150KW, power is adjusted to 200KW after 35 minutes to 100KW；Power after 10 minutes
180KW is down to, is finished until load melting, whole fusion process vacuum is maintained at 5~7Pa.Then start applying argon gas to go forward side by side
Row alloying, aluminum shot, ferrotianium, vanadium iron, manganese metal, carbon dust etc. is added successively, at the same time power ascension to 250KW；Complete to close
After aurification, when molten steel temperature reaches 1450 DEG C or so, cast into pig mold, obtain alloy cast ingot.Ingot casting is through 800 tons of hydraulic pressure
Formula forging press obtains alloy forging material with 2.9 ratio of forging reduction cogging, then after 1200 DEG C of solid solutions, 780 DEG C of timeliness, is finally closed
Golden material.
The alloy material room temperature hardness that the present embodiment obtains reaches 47.24HRC, room temperature tensile intensity 1420MPa, and room temperature is bent
Take intensity 1116MPa, room temperature elongation percentage 6%；Tensile strength 945MPa at 800 DEG C, the yield strength 842MPa at 800 DEG C,
Elongation percentage 19.76% at 800 DEG C；Tensile strength 765MPa at 900 DEG C, the yield strength 731MPa at 900 DEG C, at 900 DEG C
Elongation percentage 23.79%；Metallographic structure figure is shown in Fig. 1.
Embodiment 2
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, concretely comprising the following steps：
By sheet nickel（Ni9920）, pure iron（YT01）, metallic cobalt（Co9980）, ferrotungsten（FeW80-C）, ferro-niobium（FeNb60A）、
Crome metal（JCR99A）, molybdenum-iron（FeMo55-B）It is placed in as furnace charge in vaccum sensitive stove, initial power 50KW, after half an hour
Power ascension after 45 minutes, power is adjusted to 150KW, power is adjusted to 200KW after 35 minutes to 100KW；Power after 10 minutes
180KW is down to, is finished until load melting, whole fusion process vacuum is maintained at 5~7Pa.Then start applying argon gas to go forward side by side
Row alloying, aluminum shot, ferrotianium, vanadium iron, manganese metal, carbon dust etc. is added successively, at the same time power ascension to 250KW；Complete to close
After aurification, when molten steel temperature reaches 1450 DEG C or so, cast into pig mold, obtain alloy cast ingot.Ingot casting is through 800 tons of hydraulic pressure
Formula forging press obtains alloy forging material with 3.0 ratio of forging reduction cogging, then after 1200 DEG C of solid solutions, 780 DEG C of timeliness, is finally closed
Golden material.
The alloy material room temperature hardness that the present embodiment obtains reaches 53.44HRC, room temperature tensile intensity 1468MPa, and room temperature is bent
Take intensity 1124MPa, room temperature elongation percentage 7%；Tensile strength 969MPa at 800 DEG C, the yield strength 844MPa at 800 DEG C,
Elongation percentage 20.81% at 800 DEG C；Tensile strength 802MPa at 900 DEG C, the yield strength 730MPa at 900 DEG C, at 900 DEG C
Elongation percentage 26.92%.Metallographic structure figure is similar to Example 1, omits.
Embodiment 3
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, concretely comprising the following steps：
By sheet nickel（Ni9920）, pure iron（YT01）, metallic cobalt（Co9980）, ferrotungsten（FeW80-C）, ferro-niobium（FeNb60A）、
Crome metal（JCR99A）, molybdenum-iron（FeMo55-B）It is placed in as furnace charge in vaccum sensitive stove, initial power 50KW, after half an hour
Power ascension after 45 minutes, power is adjusted to 150KW, power is adjusted to 200KW after 35 minutes to 100KW；Power after 10 minutes
180KW is down to, is finished until load melting, whole fusion process vacuum is maintained at 5~7Pa.Then start applying argon gas to go forward side by side
Row alloying, aluminum shot, ferrotianium, vanadium iron, manganese metal, carbon dust etc. is added successively, at the same time power ascension to 250KW；Complete to close
After aurification, when molten steel temperature reaches 1450 DEG C or so, cast into pig mold, obtain alloy cast ingot.Ingot casting is through 800 tons of hydraulic pressure
Formula forging press obtains alloy forging material with 2.9 ratio of forging reduction coggings, then after 1200 DEG C of solid solutions, 780 DEG C of timeliness, obtains final alloy
Material.
The alloy material room temperature hardness that the present embodiment obtains reaches 49.86HRC, room temperature tensile intensity 1470MPa, and room temperature is bent
Take intensity 1120MPa, room temperature elongation percentage 6.8%；Tensile strength 963MPa at 800 DEG C, the yield strength 848MPa at 800 DEG C,
Elongation percentage 22.34% at 800 DEG C；Tensile strength 798MPa at 900 DEG C, the yield strength 737MPa at 900 DEG C, at 900 DEG C
Elongation percentage 27.72%.Metallographic structure figure is similar to Example 1, omits.
Embodiment 4
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, concretely comprising the following steps：
By sheet nickel（Ni9920）, pure iron（YT01）, metallic cobalt（Co9980）, ferrotungsten（FeW80-C）, ferro-niobium（FeNb60A）、
Crome metal（JCR99A）, molybdenum-iron（FeMo55-B）It is placed in as furnace charge in vaccum sensitive stove, initial power 50KW, after half an hour
Power ascension after 45 minutes, power is adjusted to 150KW, power is adjusted to 200KW after 35 minutes to 100KW；Power after 10 minutes
180KW is down to, is finished until load melting, whole fusion process vacuum is maintained at 5~7Pa.Then start applying argon gas to go forward side by side
Row alloying, aluminum shot, ferrotianium, vanadium iron, manganese metal, carbon dust etc. is added successively, at the same time power ascension to 250KW；Complete to close
After aurification, when molten steel temperature reaches 1450 DEG C or so, cast into pig mold, obtain alloy cast ingot.Ingot casting is through 800 tons of hydraulic pressure
Formula forging press obtains alloy forging material with 3.2 ratio of forging reduction cogging, then after 1200 DEG C of solid solutions, 780 DEG C of timeliness, is finally closed
Golden material.
The alloy material room temperature hardness that the present embodiment obtains reaches 51.84HRC, room temperature tensile intensity 1439MPa, and room temperature is bent
Take intensity 1119MPa, room temperature elongation percentage 6.5%；Tensile strength 957MPa at 800 DEG C, the yield strength 838MPa at 800 DEG C,
Elongation percentage 21.05% at 800 DEG C；Tensile strength 781MPa at 900 DEG C, the yield strength 735MPa at 900 DEG C, at 900 DEG C
Elongation percentage 24.9%.Metallographic structure figure is similar to Example 1, omits.
Embodiment 5
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, specific steps are the same as embodiment 1.
The alloy material room temperature hardness that the present embodiment obtains reaches 48HRC, room temperature tensile intensity 1400MPa, room temperature yield
Intensity 1118MPa, room temperature elongation percentage 6.5%；Tensile strength 947MPa at 800 DEG C, the yield strength 840MPa at 800 DEG C,
Elongation percentage 20% at 800 DEG C；Tensile strength 800MPa at 900 DEG C, the yield strength 733MPa at 900 DEG C, at 900 DEG C
Elongation percentage 24.9%.Metallographic structure figure is similar to Example 1, omits.
Embodiment 6
The present embodiment hot pressed sintering mould is shown in Table 1 with the chemical composition of alloy material, and alloy material is matched somebody with somebody in the chemical composition ratio
Than using 500kg vacuum induction meltings, specific steps are the same as embodiment 1.
The alloy material room temperature hardness that the present embodiment obtains reaches 50HRC, room temperature tensile intensity 1450MPa, room temperature yield
Intensity 1120MPa, room temperature elongation percentage 6.5%；Tensile strength 950MPa at 800 DEG C, the yield strength 843MPa at 800 DEG C,
Elongation percentage 22% at 800 DEG C；Tensile strength 793MPa at 900 DEG C, the yield strength 730MPa at 900 DEG C, at 900 DEG C
Elongation percentage 24.9%.Metallographic structure figure is similar to Example 1, omits.
The embodiment 1-6 chemical compositions of table 1 form（%）
Above example is only to illustrative and not limiting technical scheme, although entering with reference to above-described embodiment to the present invention
Go detailed description, it will be understood by those within the art that：Still the present invention can be modified or equally replaced
Change, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover will in right of the invention
Ask among scope.
Claims (9)
- A kind of 1. hot pressed sintering mould alloy material, it is characterised in that：The chemical composition composition and its matter of the alloy material Measuring percentage is：C：0.01~0.06%, Si≤0.2%, Mn≤0.2%, P≤0.01%, S≤0.002%, Al：1.20~2.0%, Nb：2.20~2.60%, Ti：2.30~2.60%, Mo：8~10%, Cr：12~15%, Fe：22.0~25.0%, B≤0.01%, Cu ≤ 0.07%, V≤0.07%, W≤0.2%, Co≤0.2%, remaining is Ni and inevitable impurity.
- A kind of 2. hot pressed sintering mould alloy material according to claim 1, it is characterised in that：In the alloy material C mass percent is：0.03~0.05%.
- A kind of 3. hot pressed sintering mould alloy material according to claim 1, it is characterised in that：In the alloy material B mass percent is：0.007~0.01%.
- A kind of 4. hot pressed sintering mould alloy material according to claim 1, it is characterised in that：In the alloy material Cu mass percent is：0.03~0.07%.
- A kind of 5. hot pressed sintering mould alloy material according to claim 1-4 any one, it is characterised in that：It is described W and Co mass percent sum is in alloy material：W+Co≤0.3%.
- A kind of 6. hot pressed sintering mould alloy material according to claim 1-4 any one, it is characterised in that：It is described Hardness number is in 47~54HRC after alloy material Ageing Treatment.
- A kind of 7. hot pressed sintering mould alloy material according to claim 1-4 any one, it is characterised in that：It is described Alloy material at room temperature tensile strength be 1420~1470MPa, yield strength be 1116~1124MPa, elongation percentage is 6~7%.
- A kind of 8. hot pressed sintering mould alloy material according to claim 1-4 any one, it is characterised in that：It is described Tensile strength is 945~969MPa at 800 DEG C of alloy material, and yield strength is 838~848MPa, elongation percentage is 19.76~ 22.34%。
- A kind of 9. hot pressed sintering mould alloy material according to claim 1-4 any one, it is characterised in that：It is described Tensile strength is 765~802MPa at 900 DEG C of alloy material, and yield strength is 730~737MPa, elongation percentage is 23.79~ 27.72%。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411265A (en) * | 2020-03-21 | 2020-07-14 | 交大材料科技(江苏)研究院有限公司 | Nickel-based alloy ultrathin sheet |
| CN114561571A (en) * | 2022-01-19 | 2022-05-31 | 河钢股份有限公司 | Low-casting-stress high-strength wear-resistant nickel-based alloy and production method thereof |
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| CN114561571A (en) * | 2022-01-19 | 2022-05-31 | 河钢股份有限公司 | Low-casting-stress high-strength wear-resistant nickel-based alloy and production method thereof |
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Application publication date: 20180105 |