CN105463291A - Fully-prealloyed powder and preparation method thereof - Google Patents
Fully-prealloyed powder and preparation method thereof Download PDFInfo
- Publication number
- CN105463291A CN105463291A CN201510903434.7A CN201510903434A CN105463291A CN 105463291 A CN105463291 A CN 105463291A CN 201510903434 A CN201510903434 A CN 201510903434A CN 105463291 A CN105463291 A CN 105463291A
- Authority
- CN
- China
- Prior art keywords
- powder
- full pre
- alloying powder
- alloying
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 199
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 37
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 8
- 238000005275 alloying Methods 0.000 claims description 115
- 239000002994 raw material Substances 0.000 claims description 85
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 36
- 239000011247 coating layer Substances 0.000 claims description 35
- 230000009467 reduction Effects 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 30
- 229960004643 cupric oxide Drugs 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 21
- 239000001257 hydrogen Substances 0.000 claims description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims description 19
- 239000011812 mixed powder Substances 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000003801 milling Methods 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 238000001272 pressureless sintering Methods 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000001291 vacuum drying Methods 0.000 claims description 10
- 238000013467 fragmentation Methods 0.000 claims description 9
- 238000006062 fragmentation reaction Methods 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 238000009692 water atomization Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 abstract description 31
- 230000008569 process Effects 0.000 abstract description 20
- 239000010432 diamond Substances 0.000 abstract description 17
- 229910003460 diamond Inorganic materials 0.000 abstract description 17
- 239000007767 bonding agent Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000010949 copper Substances 0.000 description 55
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 31
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 26
- 238000000889 atomisation Methods 0.000 description 26
- 238000002844 melting Methods 0.000 description 26
- 230000008018 melting Effects 0.000 description 26
- 239000000203 mixture Substances 0.000 description 26
- 239000011135 tin Substances 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- 239000011651 chromium Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 239000000049 pigment Substances 0.000 description 8
- 238000003723 Smelting Methods 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 238000005452 bending Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 229910052718 tin Inorganic materials 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 238000009747 press moulding Methods 0.000 description 6
- NSRBDSZKIKAZHT-UHFFFAOYSA-N tellurium zinc Chemical compound [Zn].[Te] NSRBDSZKIKAZHT-UHFFFAOYSA-N 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 238000000975 co-precipitation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005551 mechanical alloying Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- -1 contains atomization Substances 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000713 high-energy ball milling Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- 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
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
- B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
Abstract
The invention discloses fully-prealloyed powder. The fully-prealloyed powder is prepared from, by weight percentage, 30%-65% of Fe, 15%-45% of Cu, 1%-15% of Sn, 0%-15% of Ni, 1%-30% of Co, 0%-5% of Qt and the balance inevitable impurities, wherein Qt is selected from one or more of Mn, Cr, Ti, P and W. The invention further discloses a preparation method of the fully-prealloyed powder. The formability and sintering strength of the fully-prealloyed powder are improved, and the sintering density of the fully-prealloyed power is increased; in the whole process, only the fully-prealloyed powder is used as a bonding agent in a diamond tool bit; and the advantages that the fully-prealloyed powder is low in sintering temperature, wide in process range and good in pullout strength on diamond are brought into full play.
Description
Technical field
The present invention relates to powder metallurgical technology, especially a kind of full pre-alloying powder and preparation method thereof.
Background technology
Diamond tool the overwhelming majority adopt powder metallurgic method make, first bonding agent is mixed mutually with synthetic diamond particles, more repressed shaping, sinter form.
Bonding agent (also known as carcass) affects the performance of diamond tool to a great extent, generally by cobalt, copper, tin, iron, the multiple element allotments such as nickel form, after mixing with diamond particles, pass through swaging, sintering reaches the shape of setting, density and mechanical property, it is higher to there is sintering temperature in this multielement mechanically mixing powder, element alloyed insufficient, metallographic structure is uneven, sintering is difficult to reach complete densification, the shortcomings such as wayward are sintered during element fusing point great disparity, cause the wear resistance of carcass, holding property can not get there is performance, simultaneously comparatively high temps sintering has infringement to diamond properties and uneconomical.
For improving the performance of bonding agent, people propose pre-alloyed powder concept in the nineties in 20th century, by multielement by the leading alloying of certain technique, because pre-alloyed powder alloying is abundant, homogeneous microstructure, the shortcoming of mechanically mixing powder can be overcome like this, greatly can improve the resistance to compression of sintered article, bending strength, and can sintering temperature be reduced, shorten sintering time, the system that such as same component is formed, hot pressed sintering temperature can decline 80 ~ 150 DEG C, not only the high-temperature damage of diamond original performance is reduced, and power saving, save graphite jig, at the situation decline lower production cost that cutting property is identical.Even if at lesser temps sintering, also can obtain the sintered compact of uniform microtexture and complete densification, low melting point metal wherein also can not more early run off, thus the wear resistance of sintered compact and holding property are not fully exerted.
The preparation method of pre-alloyed powder mainly contains atomization, chemical coprecipitation and mechanical alloying method, chemical coprecipitation is the technique adopting co-precipitation Reduction of Oxide, the particle diameter of powder is little of, loose low, be conducive to the sintering of cutter head, but total oxygen content is higher, technology controlling and process is more difficult, and price occupies high, and has pollution to environment; Mechanical alloying method is the technique adopting high-energy ball milling, and can realize the alloying of some special elementses, the free energy of powder is higher, but efficiency is low, and follow-up Passivation Treatment is had any problem technically; Atomization adopts melting atomization process, and production capacity is large, cost is low, and the alloying level of powder is high, uniform composition, but Song Bigao, plasticity are poor.
In above-mentioned three kinds of preparation methods, the most extensive in industrial application with atomization, pre-alloyed powder prepared by water atomization can improve over-all properties than congruent simple substance mixed powder, but because plasticity is poor, when pre-alloyed powder accounting is more than 50%, compacting scrap rate obviously increases, and in carcass, usage ratio is restricted.
The plasticity how improving atomized powder becomes the makers' striving direction of prealloy powder.Urgently development need not add the full prealloy powder of other powder.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of full pre-alloying powder and preparation method thereof, improve the plasticity of full pre-alloying powder, sintered density and sintering strength, all use full pre-alloying powder as bonding agent in diamond tool bit, give full play to that full pre-alloyed powder sintering temperature is low, processing range is wide, the advantage good to diamond hold.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Full pre-alloying powder, moiety and the weight percentage of described full pre-alloying powder be,
Fe30 ~ 65%, Cu15 ~ 45%, Sn1 ~ 15%, Ni0 ~ 15%, Co1 ~ 30%, Qt0 ~ 5%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
The further improvement of technical solution of the present invention is: moiety and the weight percentage of described full pre-alloying powder be,
Fe35 ~ 62%, Cu15 ~ 40%, Sn3 ~ 12%, Ni0 ~ 12%, Co3 ~ 30%, Qt0 ~ 2%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
Technical scheme of the present invention also comprises:
The preparation method of full pre-alloying powder, described preparation method comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material;
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A;
C, the coating layer raw material in steps A is placed in mixing equipment with the parent core powder prepared in the form of cupric oxide powder and step B is mixed to color even, obtain mixed powder;
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material;
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The further improvement of technical solution of the present invention is: in described steps A, and the weight percentage that the Cu as coating layer raw material separated accounts for full pre-alloying powder is 10 ~ 25%.
The further improvement of technical solution of the present invention is: the processing condition of described step B mesohigh water atomization pulverization method are, superheating temperature is 100 ~ 150 DEG C, leaking eye diameter is 4 ~ 6mm, high water pressure is 50 ~ 70MPa, vacuum-drying temperature is 90 ~ 110 DEG C, the granularity of parent core powder is less than 270 orders, and oxygen level is less than 0.6%.
The further improvement of technical solution of the present invention is: in described step C, and the granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, the charge amount of ball mill is 1/2 ~ 2/3 of volume, and sphere diameter is 6 ~ 10mm, ratio of grinding media to material 2:1 ~ 5:1, be dry mixed, mixing time 1 ~ 2h.
The further improvement of technical solution of the present invention is: in described step D, and the protective atmosphere carrying out vat blue RS in reduction furnace is liquefied ammonia hydrogen manufacturing decomposition gas or hydrogen.
The further improvement of technical solution of the present invention is: in described step D, and the temperature of carrying out vat blue RS in reduction furnace is 600 ~ 750 DEG C, and the time of vat blue RS is 2 ~ 6h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
The further improvement of technical solution of the present invention is: in described step e, and the granularity of full pre-alloying powder is less than 200 orders, and oxygen level is less than 0.4%.
The further improvement of technical solution of the present invention is: the coldmoulding pressure of the full pre-alloying powder that described preparation method prepares is 350 ~ 450MPa, green strength is 15.0 ~ 25.0MPa, pressureless sintering temperature 830 ~ 900 DEG C, sintered density reaches more than 98%.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
The full pre-alloying powder that the present invention prepares is used as the bonding agent of diamond tool, has excellent wear resistance, the holding higher to diamond particles, good low-temperature sintering, good plasticity and excellent weldability.
In the preparation method of full pre-alloying powder of the present invention, utilize the easy reductibility of cupric oxide and the good plasticity of copper, the alloying of powder is divided into two steps, parent core composition is made parent core powder, as the core of second step diffusion alloying by hydraulic atomized milling method by the first step; Small part copper mixes with core with cupric oxide form by second step in ball mill, then moves to reduction furnace and carries out vat blue RS, makes the copper after reduction be diffused on core, utilizes the good plasticity of copper to improve plasticity, thus obtained full pre-alloying powder.
Preparation method of the present invention, in vat blue RS process in reduction furnace, the oxide compound on parent core surface and the cupric oxide that is mixed into are by hydrogen reducing, and seize the oxygen in oxide compound, the parent core particle after reduction and the surface of copper particle are pure, active high, simultaneously owing to being attended by the generation of water vapour in reduction process, facilitate the wetting of copper, make it spread over parent core surface equably, again through High temperature diffusion, copper and parent core form certain metallurgical binding.
Preparation method of the present invention, the weight percent that the copper as coating layer raw material accounts for full pre-alloying powder should be 10 ~ 25%, when lower than 10% time, the copper film on surface is too thin, does not have cohesive action to parent core when suppressing; When more than 25%, copper can wrap parent core completely, and except with except the diffusion-bonded of parent core, the copper of enrichment can reduce powder compression density, and can reduce the hold of powder and diamond particles when sintering.
The full pre-alloying powder of the present invention has uniform composition, advantage that plasticity is good, the accounting of full pre-alloyed powder in bonding agent can reach more than 80%, directly can add diamond and make diamond tool, compression and sintering good manufacturability, and the present invention is to preparing environment and raw-material purity requirement is lower, environmentally safe, is applicable to suitability for industrialized production.
Embodiment
The invention discloses full pre-alloying powder, the moiety of full pre-alloying powder and weight percentage be,
Fe30 ~ 65%, Cu15 ~ 45%, Sn1 ~ 15%, Ni0 ~ 15%, Co1 ~ 30%, Qt0 ~ 5%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
Preferably, the moiety of full pre-alloying powder and weight percentage be,
Fe35 ~ 62%, Cu15 ~ 40%, Sn3 ~ 12%, Ni0 ~ 12%, Co3 ~ 30%, Qt0 ~ 2%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
More preferably, the moiety of full pre-alloying powder and weight percentage be,
Fe40 ~ 60%, Cu20 ~ 35%, Sn3 ~ 10%, Ni3 ~ 10%, Co8 ~ 20%, Qt0 ~ 2%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
The invention also discloses the preparation method of full pre-alloying powder, comprise following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
Particularly, the weight percentage that the Cu as coating layer raw material separated accounts for full pre-alloying powder is 10 ~ 25%, and the Cu as coating layer raw material feeds in raw material with the form of cupric oxide.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.
Particularly, the detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, and preferably block, rod fills or flaky raw material; Melting raw material in mid-frequency melting furnace, with melting down temperature for benchmark, continues intensification 100 ~ 150 DEG C, i.e. superheating temperature 100 ~ 150 DEG C, and leak eye diameter and be preferably 4 ~ 6mm, high water pressure is preferably 50 ~ 70MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtains that granularity is less than 270 orders, oxygen level is less than 0.6% parent core powder.
C, the coating layer raw material in steps A is placed in mixing equipment with the parent core powder prepared in the form of cupric oxide powder and step B is mixed to color even, obtain mixed powder.
Particularly, the granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 1/2 ~ 2/3 of volume, and sphere diameter is 6 ~ 10mm, ratio of grinding media to material 2:1 ~ 5:1, is dry mixed, and mixing time 1 ~ 2h, is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.
Particularly, the protective atmosphere carrying out vat blue RS in reduction furnace is liquefied ammonia hydrogen manufacturing decomposition gas or hydrogen, and the composition of liquefied ammonia hydrogen manufacturing decomposition gas is the hydrogen of 3/4 volume fraction and the nitrogen of 1/4 volume fraction.The temperature of carrying out vat blue RS in reduction furnace is 600 ~ 750 DEG C, and the time of vat blue RS is 2 ~ 6h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
Particularly, the granularity of full pre-alloying powder is less than 200 orders, and oxygen level is less than 0.4%.
The coldmoulding pressure of full pre-alloying powder prepared by the inventive method is 350 ~ 450MPa, and green strength is 15.0 ~ 25.0MPa, and pressureless sintering temperature is 830 ~ 900 DEG C, and sintered density reaches more than 98%.
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment, only for explaining the present invention, does not form the restriction to protection scope of the present invention.
Embodiment 1
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe62%, Cu20%, Sn4%, Ni8%, Co6%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 62kg, and Cu accounts for 20kg, and Sn accounts for 4kg, and Ni accounts for 8kg, and Co accounts for 6kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 15%.Namely in the present embodiment, coating layer raw material contains the Cu of 15kg, and parent core raw material is by the Fe of 62kg, and the Co of the Ni of the Sn of the Cu of 5kg, 4kg, 8kg, 6kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, select cathode plate, pure iron rod, tin slab, sheet nickel, electrolytic cobalt sheet; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1480 DEG C, and smelting temperature is 1590 DEG C, and leaking eye diameter is 5.5mm, and high water pressure is 65MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.6%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 18.75kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 1/2 of volume, and sphere diameter is 6mm, ratio of grinding media to material 2:1, is dry mixed, and mixing time 2h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is hydrogen.The temperature of carrying out vat blue RS in reduction furnace is 700 ± 10 DEG C, and the time of vat blue RS is 2h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.4%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 1
The composition of pre-alloying powder prepared by this comparative example and weight percentage are predefined for: Fe62%, Cu20%, Sn4%, Ni8%, Co6%.Namely this comparative example prepares 100kg pre-alloying powder, and Fe accounts for 62kg, and Cu accounts for 20kg, and Sn accounts for 4kg, and Ni accounts for 8kg, and Co accounts for 6kg.
The preparation method of the present embodiment pre-alloying powder is full atomization, comprises following processing step,
1) prepare burden according to the weight percentage of component each in prealloyed powders powder stock.
2) melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1470 DEG C, and smelting temperature is 1580 DEG C.
3) be 5.5mm at leakage eye diameter, high water pressure is be atomized under the condition of 65MPa; Nitrogen protection is passed in atomizing cup in atomization process.
4) the pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.6%.
Below the performance test data of embodiment 1 and comparative example 1.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Embodiment 2
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe38%, Cu40%, Sn10%, Ni8%, Co4%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 38kg, and Cu accounts for 40kg, and Sn accounts for 10kg, and Ni accounts for 8kg, and Co accounts for 4kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 25%.Namely in the present embodiment, coating layer raw material contains the Cu of 25kg, and parent core raw material is by the Fe of 38kg, and the Co of the Ni of the Sn of the Cu of 15kg, 10kg, 8kg, 4kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, select cathode plate, pure iron rod, tin slab, sheet nickel, electrolytic cobalt sheet; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1460 DEG C, smelting temperature 1580 DEG C, and leaking eye diameter is 4.5mm, and high water pressure is 60MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.5%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 31.25kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 1/2 of volume, and sphere diameter is 8mm, ratio of grinding media to material 5:1, is dry mixed, and mixing time 1h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is hydrogen.The temperature of carrying out vat blue RS in reduction furnace is 620 ± 10 DEG C, and the time of vat blue RS is 4h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.3%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 2
The composition of pre-alloying powder prepared by this comparative example and weight percentage are predefined for: Fe38%, Cu40%, Sn10%, Ni8%, Co4%.Namely this comparative example prepares 100kg pre-alloying powder, and Fe accounts for 38kg, and Cu accounts for 40kg, and Sn accounts for 10kg, and Ni accounts for 8kg, and Co accounts for 4kg.
The preparation method of this comparative example pre-alloying powder is full atomization, and concrete technology step is identical with comparative example 1.
Below the performance test data of embodiment 2 and comparative example 2.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Embodiment 3
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe45%, Cu30%, Sn5%, Co20%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 45kg, and Cu accounts for 30kg, and Sn accounts for 5kg, and Co accounts for 20kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 20%.Namely in the present embodiment, coating layer raw material contains the Cu of 20kg, and parent core raw material is by the Fe of 45kg, and the Co of the Sn of the Cu of 10kg, 5kg, 20kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, select cathode plate, pure iron rod, tin slab, electrolytic cobalt sheet; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1490 DEG C, and smelting temperature is 1620 DEG C, and leaking eye diameter is 5.0mm, and high water pressure is 65MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.6%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 25kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 2/3 of volume, and sphere diameter is 6mm, ratio of grinding media to material 4:1, is dry mixed, and mixing time 1.5h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is liquefied ammonia hydrogen manufacturing decomposition gas, and the composition of liquefied ammonia hydrogen manufacturing decomposition gas is the hydrogen of 3/4 volume fraction and the nitrogen of 1/4 volume fraction.The temperature of carrying out vat blue RS in reduction furnace is 650 ± 10 DEG C, and the time of vat blue RS is 5h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.3%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 3
The composition of pre-alloying powder prepared by this comparative example and weight percentage are predefined for: Fe45%, Cu30%, Sn5%, Co20%.Namely the present embodiment prepares 100kg pre-alloying powder, and Fe accounts for 45kg, and Cu accounts for 30kg, and Sn accounts for 5kg, and Co accounts for 20kg.
The preparation method of this comparative example pre-alloying powder is full atomization, and concrete technology step is identical with comparative example 1.
Below the performance test data of embodiment 3 and comparative example 3.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Embodiment 4
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe60%, Cu18%, Sn3%, Ni15%, Co3%, Mn0.5%, Cr0.5%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 60kg, and Cu accounts for 18kg, and Sn accounts for 3kg, and Ni accounts for 15kg, and Co accounts for 3kg, and Mn accounts for 0.5kg, and Cr accounts for 0.5kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 15%.Namely in the present embodiment, coating layer raw material contains the Cu of 15kg, and parent core raw material is by the Fe of 60kg, and the Cr of the Mn of the Co of the Ni of the Sn of the Cu of 3kg, 3kg, 15kg, 3kg, 0.5kg, 0.5kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, select cathode plate, pure iron rod, tin slab, sheet nickel, electrolytic cobalt sheet, low carbon ferromanganese, electrolysis chromium sheet; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1520 DEG C, smelting temperature 1630 DEG C, and leaking eye diameter is 6.0mm, and high water pressure is 70MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.4%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 18.75kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is for being less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 1/2 of volume, and sphere diameter is 10mm, ratio of grinding media to material 4:1, is dry mixed, and mixing time 2h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is hydrogen.The temperature of carrying out vat blue RS in reduction furnace is 750 ± 10 DEG C, and the time of vat blue RS is 6h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.4%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 4
The composition of pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe60%, Cu18%, Sn3%, Ni15%, Co3%, Mn0.5%, Cr0.5%.Namely the present embodiment prepares 100kg pre-alloying powder, and Fe accounts for 60kg, and Cu accounts for 18kg, and Sn accounts for 3kg, and Ni accounts for 15kg, and Co accounts for 3kg, and Mn accounts for 0.5kg, and Cr accounts for 0.5kg.
The preparation method of this comparative example pre-alloying powder is full atomization, and concrete technology step is identical with comparative example 1.
Below the performance test data of embodiment 4 and comparative example 4.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Embodiment 5
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe30%, Cu40%, Sn10%, Ni10%, Co8%, W2%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 30kg, and Cu accounts for 40kg, and Sn accounts for 10kg, and Ni accounts for 10kg, and Co accounts for 8kg, and W accounts for 2kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 25%.Namely in the present embodiment, coating layer raw material contains the Cu of 25kg, and parent core raw material is by the Fe of 30kg, and the W of the Co of the Ni of the Sn of the Cu of 15kg, 10kg, 10kg, 8kg, 2kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: select cathode plate, pure iron rod, tin slab, sheet nickel, electrolytic cobalt sheet, ferrotungsten; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1540 DEG C, smelting temperature 1670 DEG C, and leaking eye diameter is 4.0mm, and high water pressure is 55MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.5%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 31.25kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 1/2 of volume, and sphere diameter is 6mm, ratio of grinding media to material 2:1, is dry mixed, and mixing time 2h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is liquefied ammonia hydrogen manufacturing decomposition gas, and the composition of liquefied ammonia hydrogen manufacturing decomposition gas is the hydrogen of 3/4 volume fraction and the nitrogen of 1/4 volume fraction.The temperature of carrying out vat blue RS in reduction furnace is 650 ± 10 DEG C, and the time of vat blue RS is 3h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.4%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 5
The composition of pre-alloying powder prepared by this comparative example and weight percentage are predefined for: Fe30%, Cu40%, Sn10%, Ni10%, Co8%, W2%.Namely this comparative example prepares 100kg pre-alloying powder, and Fe accounts for 30kg, and Cu accounts for 40kg, and Sn accounts for 10kg, and Ni accounts for 10kg, and Co accounts for 8kg, and W accounts for 2kg.
The preparation method of this comparative example pre-alloying powder is full atomization, and concrete technology step is identical with comparative example 1.
Below the performance test data of embodiment 5 and comparative example 5.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Embodiment 6
The composition of full pre-alloying powder prepared by the present embodiment and weight percentage are predefined for: Fe35%, Cu15%, Sn12%, Ni6%, Co30%, P1%, Ti1%.Namely the present embodiment prepares the full pre-alloying powder of 100kg, and Fe accounts for 35kg, and Cu accounts for 15kg, and Sn accounts for 12kg, and Ni accounts for 6kg, and Co accounts for 30kg, and P accounts for 1kg, and Ti accounts for 1kg.
The preparation method of the full pre-alloying powder of the present embodiment comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material.
The weight percentage that the Cu as coating layer raw material separated in the present embodiment accounts for full pre-alloying powder is 10%.Namely in the present embodiment, coating layer raw material contains the Cu of 10kg, and parent core raw material is by the Fe of 35kg, and the Ti of the P of the Co of the Ni of the Sn of the Cu of 5kg, 12kg, 6Kg, 30kg, 1kg, 1kg forms.
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A.The detailed process of hydraulic atomized milling method and processing condition are: prepare burden according to the weight percentage of each component in parent core raw material, select cathode plate, pure iron rod, tin slab, sheet nickel, electrolytic cobalt sheet, ferrophosphorus, ferrotianium; Melting above-mentioned raw materials in mid-frequency melting furnace, melting down temperature is 1480 DEG C, and smelting temperature is 1610 DEG C, and leaking eye diameter is 6.0mm, and high water pressure is 50MPa; Nitrogen protection is passed in atomizing cup in atomization process; Pigment mixture after atomization, through filter-press dehydration, after 90 ~ 110 DEG C of vacuum-dryings, screens out particle diameter and is greater than 270 object coarse particless, obtain the parent core powder that granularity is less than 270 orders, oxygen level is less than 0.5%.
C, added with the form of cupric oxide powder by the coating layer raw material in steps A, the quality of the cupric oxide powder after amounting to is 12.5kg, is placed in mixing equipment and is mixed to color even, obtain mixed powder with the parent core powder prepared in step B.The granularity of cupric oxide powder is less than 325 orders, and mixing equipment is ball mill, and the charge amount of ball mill is 2/3 of volume, and sphere diameter is 6mm, ratio of grinding media to material 4:1, is dry mixed, and mixing time 1.5h is mixed to color even consistent.
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material.The protective atmosphere carrying out vat blue RS in reduction furnace is hydrogen.The temperature of carrying out vat blue RS in reduction furnace is 600 ± 10 DEG C, and the time of vat blue RS is 5h, and after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
The granularity of the full pre-alloying powder of the present embodiment is less than 200 orders, and oxygen level is less than 0.4%.Carry out conjunction to the powder after screening to criticize, check, measure and packaging warehouse-in.
Comparative example 6
The composition of pre-alloying powder prepared by this comparative example and weight percentage are predefined for: Fe35%, Cu15%, Sn12%, Ni6%, Co30%, P1%, Ti1%.Namely this comparative example prepares 100kg pre-alloying powder, and Fe accounts for 35kg, and Cu accounts for 15kg, and Sn accounts for 12kg, and Ni accounts for 6kg, and Co accounts for 30kg, and P accounts for 1kg, and Ti accounts for 1kg.
The preparation method of this comparative example pre-alloying powder is full atomization, and concrete technology step is identical with comparative example 1.
Below the performance test data of embodiment 6 and comparative example 6.
1) cold-press moulding
Note: the testing method of green strength is according to GB/T5160-2002 " the mensuration rectangle pressed compact transverse breakage method of metal-powder green strength ".
2) pressureless sintering performance
The pressed compact obtained under 400MPa compacting pressure (30mm × 12mm × 6mm) is placed in well formula sintering oven, carries out pressureless sintering by design temperature, time, then test the density of the rear sample of sintering, hardness and bending strength.
Find out from embodiment, full pre-alloying powder prepared by the inventive method, due to the effect of surface copper, under equal compacting pressure, increase than full atomized powder pressed density, compact strength significantly improves.In pressureless sintering performance, the existence of surperficial trace copper does not affect sintering character, under equal sintering temperature, cutter head density, hardness and intensity and full atomized powder basically identical.
The beneficial effect of the inventive method is: the plasticity improving prealloy powder prepared by water atomization, make that diamond tool tyre case is entirely pre-alloyed becomes possibility, the usage ratio of the full pre-alloying powder of the present invention in cutter head carcass reaches 80 ~ 100%, can give full play to that full pre-alloying powder sintering temperature is low, processing range is wide, the advantage good to diamond hold.
The inventive method manufacture craft is simple, and environmentally safe, is suitable for suitability for industrialized production.
Claims (10)
1. full pre-alloying powder, is characterized in that: moiety and the weight percentage of described full pre-alloying powder be,
Fe30 ~ 65%, Cu15 ~ 45%, Sn1 ~ 15%, Ni0 ~ 15%, Co1 ~ 30%, Qt0 ~ 5%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
2. full pre-alloying powder according to claim 1, is characterized in that: moiety and the weight percentage of described full pre-alloying powder be,
Fe35 ~ 62%, Cu15 ~ 40%, Sn3 ~ 12%, Ni0 ~ 12%, Co3 ~ 30%, Qt0 ~ 2%, wherein Qt be selected from Mn, Cr, Ti, P, W wherein one or more, surplus is inevitable impurity.
3. the preparation method of full pre-alloying powder, is characterized in that: described preparation method comprises following processing step,
A, the raw material of full pre-alloying powder is separated a part of Cu as coating layer raw material, remainder is parent core raw material;
B, hydraulic atomized milling method is adopted to make parent core powder the parent core raw material in steps A;
C, the coating layer raw material in steps A is placed in mixing equipment with the parent core powder prepared in the form of cupric oxide powder and step B is mixed to color even, obtain mixed powder;
D, the mixed powder in step C is placed in reduction furnace carries out vat blue RS, obtain caking material;
E, the caking material in step D carried out to fragmentation, the obtained full pre-alloying powder of screening.
4. the preparation method of full pre-alloying powder according to claim 3, is characterized in that: in described steps A, and the weight percentage that the Cu as coating layer raw material separated accounts for full pre-alloying powder is 10 ~ 25%.
5. the preparation method of full pre-alloying powder according to claim 3, it is characterized in that: the processing condition of described step B mesohigh water atomization pulverization method are, superheating temperature is 100 ~ 150 DEG C, leaking eye diameter is 4 ~ 6mm, high water pressure is 50 ~ 70MPa, vacuum-drying temperature is 90 ~ 110 DEG C, and the granularity of parent core powder is less than 270 orders, and oxygen level is less than 0.6%.
6. the preparation method of full pre-alloying powder according to claim 3, it is characterized in that: in described step C, the granularity of cupric oxide powder is less than 325 orders, mixing equipment is ball mill, the charge amount of ball mill is 1/2 ~ 2/3 of volume, and sphere diameter is 6 ~ 10mm, ratio of grinding media to material 2:1 ~ 5:1, be dry mixed, mixing time 1 ~ 2h.
7. the preparation method of full pre-alloying powder according to claim 3, is characterized in that: in described step D, and the protective atmosphere carrying out vat blue RS in reduction furnace is liquefied ammonia hydrogen manufacturing decomposition gas or hydrogen.
8. the preparation method of full pre-alloying powder according to claim 7; it is characterized in that: in described step D, the temperature of carrying out vat blue RS in reduction furnace is 600 ~ 750 DEG C, and the time of vat blue RS is 2 ~ 6h; after vat blue RS, material is cooled to less than 50 DEG C and comes out of the stove in protective atmosphere.
9. the preparation method of full pre-alloying powder according to claim 3, is characterized in that: in described step e, the granularity of full pre-alloying powder is less than 200 orders, and oxygen level is less than 0.4%.
10. the preparation method of full pre-alloying powder according to claim 3, it is characterized in that: the coldmoulding pressure of the full pre-alloying powder that described preparation method prepares is 350 ~ 450MPa, green strength is 15.0 ~ 25.0MPa, pressureless sintering temperature 830 ~ 900 DEG C, sintered density reaches more than 98%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903434.7A CN105463291B (en) | 2015-12-09 | 2015-12-09 | Fully-prealloyed powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903434.7A CN105463291B (en) | 2015-12-09 | 2015-12-09 | Fully-prealloyed powder and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105463291A true CN105463291A (en) | 2016-04-06 |
| CN105463291B CN105463291B (en) | 2017-03-22 |
Family
ID=55601443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510903434.7A Active CN105463291B (en) | 2015-12-09 | 2015-12-09 | Fully-prealloyed powder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105463291B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835235A (en) * | 2016-05-19 | 2016-08-10 | 江苏超峰工具有限公司 | High-strength diamond dry corrugated saw blade and cold press molding technology thereof |
| CN105834518A (en) * | 2016-05-19 | 2016-08-10 | 江苏超峰工具有限公司 | High-strength continuous-tooth diamond saw blade and hot press molding technology thereof |
| CN105904597A (en) * | 2016-05-23 | 2016-08-31 | 江苏华昌工具制造有限公司 | Pressureless sintering dry slice |
| CN105945741A (en) * | 2016-05-19 | 2016-09-21 | 江苏超峰工具有限公司 | Abrasion-resistant S-shaped grinding wheel and hot-press forming technology thereof |
| CN106521288A (en) * | 2016-11-23 | 2017-03-22 | 南通白鹤机针有限公司 | Pre-alloyed powder material |
| CN106926370A (en) * | 2017-01-22 | 2017-07-07 | 博深工具股份有限公司 | A kind of cutting and grinding material diamond disc |
| CN107243644A (en) * | 2017-05-25 | 2017-10-13 | 河南工业大学 | A kind of preparation method of the diamond tool copper-based prealloy powder of ultra-fine quaternary |
| CN107385346A (en) * | 2017-07-17 | 2017-11-24 | 江苏锋泰工具有限公司 | Compact diamond tool prealloy powder and preparation method thereof |
| WO2018053940A1 (en) * | 2016-09-26 | 2018-03-29 | 广东粤海华金科技股份有限公司 | Non-magnetic steel product and powder metallurgy manufacturing method therefor |
| CN108637241A (en) * | 2018-05-15 | 2018-10-12 | 陕西凯恩宝德新材料有限公司 | A kind of mining industry survey acquisition tool alloy powder and preparation method thereof |
| CN108746656A (en) * | 2018-06-15 | 2018-11-06 | 威海职业学院 | Prealloy powder and preparation method thereof for diamond composition |
| CN109078581A (en) * | 2018-08-29 | 2018-12-25 | 中南钻石有限公司 | A kind of catalytic alloy powder and the surface grooves shape diamond using its preparation, preparation method and application |
| CN109128145A (en) * | 2018-11-02 | 2019-01-04 | 石家庄海川工具有限公司 | A kind of preparation method of diamond engineering thin-walled drill cutter head powdered metallurgical material and cutter head |
| CN110480022A (en) * | 2019-09-04 | 2019-11-22 | 泉州天智合金材料科技有限公司 | A kind of FeNiCuSn pre-alloyed powder, preparation method and application |
| WO2020142671A1 (en) * | 2019-01-04 | 2020-07-09 | Tenneco Inc. | Hard powder particles with improved compressibility and green strength |
| CN111745155A (en) * | 2020-07-10 | 2020-10-09 | 郑州机械研究所有限公司 | Low-melting-point cladding alloy powder, preparation method thereof and iron-based diamond matrix |
| CN112170842A (en) * | 2020-09-29 | 2021-01-05 | 上海交通大学 | Method for preparing component gradient material by laser coaxial powder feeding additive |
| CN113600810A (en) * | 2021-08-10 | 2021-11-05 | 泉州众志新材料科技有限公司 | Matrix material for preparing high-cost-performance fine slices and fine slice cutter head |
| CN114645171A (en) * | 2022-03-21 | 2022-06-21 | 中南大学 | Novel multi-principal-element alloy-diamond grinding tool material and preparation method and application thereof |
| CN115449660A (en) * | 2022-08-31 | 2022-12-09 | 西安理工大学 | Preparation method of ultrahigh Sn content high-density low-segregation copper-tin alloy |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462162A (en) * | 2009-01-16 | 2009-06-24 | 博深工具股份有限公司 | Prealloyed carcass powder |
| CN102632296A (en) * | 2012-03-27 | 2012-08-15 | 中国有色桂林矿产地质研究院有限公司 | Cutting head of diamond saw blade for cutting metal |
| US20130133483A1 (en) * | 2010-03-08 | 2013-05-30 | University Of Rochester | Synthesis of Nanoparticles Using Reducing Gases |
| CN103273433A (en) * | 2013-05-20 | 2013-09-04 | 江苏锋泰钻石工具制造有限公司 | Diamond cutting grinding piece |
| CN103658668A (en) * | 2013-12-06 | 2014-03-26 | 湖北鄂信钻石材料有限责任公司 | Method for preparing iron-based prealloy powder |
| JP2015025169A (en) * | 2013-07-26 | 2015-02-05 | 株式会社リケン | Sintered alloy valve guide and manufacturing method thereof |
| CN105039824A (en) * | 2015-06-25 | 2015-11-11 | 安泰科技股份有限公司 | Circular diamond saw blade bit and manufacturing method thereof |
-
2015
- 2015-12-09 CN CN201510903434.7A patent/CN105463291B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462162A (en) * | 2009-01-16 | 2009-06-24 | 博深工具股份有限公司 | Prealloyed carcass powder |
| US20130133483A1 (en) * | 2010-03-08 | 2013-05-30 | University Of Rochester | Synthesis of Nanoparticles Using Reducing Gases |
| CN102632296A (en) * | 2012-03-27 | 2012-08-15 | 中国有色桂林矿产地质研究院有限公司 | Cutting head of diamond saw blade for cutting metal |
| CN103273433A (en) * | 2013-05-20 | 2013-09-04 | 江苏锋泰钻石工具制造有限公司 | Diamond cutting grinding piece |
| JP2015025169A (en) * | 2013-07-26 | 2015-02-05 | 株式会社リケン | Sintered alloy valve guide and manufacturing method thereof |
| CN103658668A (en) * | 2013-12-06 | 2014-03-26 | 湖北鄂信钻石材料有限责任公司 | Method for preparing iron-based prealloy powder |
| CN105039824A (en) * | 2015-06-25 | 2015-11-11 | 安泰科技股份有限公司 | Circular diamond saw blade bit and manufacturing method thereof |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945741B (en) * | 2016-05-19 | 2017-12-08 | 江苏超峰工具有限公司 | Wear-resisting type S type emery wheel hot press forming technologies |
| CN105834518A (en) * | 2016-05-19 | 2016-08-10 | 江苏超峰工具有限公司 | High-strength continuous-tooth diamond saw blade and hot press molding technology thereof |
| CN105945741A (en) * | 2016-05-19 | 2016-09-21 | 江苏超峰工具有限公司 | Abrasion-resistant S-shaped grinding wheel and hot-press forming technology thereof |
| CN105835235A (en) * | 2016-05-19 | 2016-08-10 | 江苏超峰工具有限公司 | High-strength diamond dry corrugated saw blade and cold press molding technology thereof |
| CN105835235B (en) * | 2016-05-19 | 2018-04-06 | 江苏超峰工具有限公司 | A kind of dry ripple saw blade cold pressing forming process of high-strength diamond |
| CN105834518B (en) * | 2016-05-19 | 2018-02-16 | 江苏超峰工具有限公司 | High intensity continuous tooth diamond saw blade hot press forming technology |
| CN105904597A (en) * | 2016-05-23 | 2016-08-31 | 江苏华昌工具制造有限公司 | Pressureless sintering dry slice |
| WO2018053940A1 (en) * | 2016-09-26 | 2018-03-29 | 广东粤海华金科技股份有限公司 | Non-magnetic steel product and powder metallurgy manufacturing method therefor |
| CN106521288A (en) * | 2016-11-23 | 2017-03-22 | 南通白鹤机针有限公司 | Pre-alloyed powder material |
| CN106926370A (en) * | 2017-01-22 | 2017-07-07 | 博深工具股份有限公司 | A kind of cutting and grinding material diamond disc |
| CN106926370B (en) * | 2017-01-22 | 2019-05-24 | 博深工具股份有限公司 | A kind of cutting and grinding material diamond disc |
| CN107243644A (en) * | 2017-05-25 | 2017-10-13 | 河南工业大学 | A kind of preparation method of the diamond tool copper-based prealloy powder of ultra-fine quaternary |
| CN107385346A (en) * | 2017-07-17 | 2017-11-24 | 江苏锋泰工具有限公司 | Compact diamond tool prealloy powder and preparation method thereof |
| CN108637241A (en) * | 2018-05-15 | 2018-10-12 | 陕西凯恩宝德新材料有限公司 | A kind of mining industry survey acquisition tool alloy powder and preparation method thereof |
| CN108746656A (en) * | 2018-06-15 | 2018-11-06 | 威海职业学院 | Prealloy powder and preparation method thereof for diamond composition |
| CN108746656B (en) * | 2018-06-15 | 2021-11-26 | 威海职业学院 | Pre-alloyed powder for diamond products and preparation method thereof |
| CN109078581A (en) * | 2018-08-29 | 2018-12-25 | 中南钻石有限公司 | A kind of catalytic alloy powder and the surface grooves shape diamond using its preparation, preparation method and application |
| CN109078581B (en) * | 2018-08-29 | 2020-07-07 | 中南钻石有限公司 | Catalyst alloy powder, surface groove-shaped diamond prepared from catalyst alloy powder, preparation method and application |
| CN109128145A (en) * | 2018-11-02 | 2019-01-04 | 石家庄海川工具有限公司 | A kind of preparation method of diamond engineering thin-walled drill cutter head powdered metallurgical material and cutter head |
| WO2020142671A1 (en) * | 2019-01-04 | 2020-07-09 | Tenneco Inc. | Hard powder particles with improved compressibility and green strength |
| CN113396233A (en) * | 2019-01-04 | 2021-09-14 | 天纳克股份有限公司 | Hard powder particles with improved compressibility and green strength |
| CN110480022A (en) * | 2019-09-04 | 2019-11-22 | 泉州天智合金材料科技有限公司 | A kind of FeNiCuSn pre-alloyed powder, preparation method and application |
| CN110480022B (en) * | 2019-09-04 | 2022-06-21 | 泉州天智合金材料科技有限公司 | FeNiCuSn prealloying powder, preparation method and application |
| CN111745155A (en) * | 2020-07-10 | 2020-10-09 | 郑州机械研究所有限公司 | Low-melting-point cladding alloy powder, preparation method thereof and iron-based diamond matrix |
| CN111745155B (en) * | 2020-07-10 | 2022-07-12 | 郑州机械研究所有限公司 | Low-melting-point cladding alloy powder, preparation method thereof and iron-based diamond matrix |
| CN112170842A (en) * | 2020-09-29 | 2021-01-05 | 上海交通大学 | Method for preparing component gradient material by laser coaxial powder feeding additive |
| CN113600810A (en) * | 2021-08-10 | 2021-11-05 | 泉州众志新材料科技有限公司 | Matrix material for preparing high-cost-performance fine slices and fine slice cutter head |
| CN114645171A (en) * | 2022-03-21 | 2022-06-21 | 中南大学 | Novel multi-principal-element alloy-diamond grinding tool material and preparation method and application thereof |
| CN115449660A (en) * | 2022-08-31 | 2022-12-09 | 西安理工大学 | Preparation method of ultrahigh Sn content high-density low-segregation copper-tin alloy |
| CN115449660B (en) * | 2022-08-31 | 2023-04-07 | 西安理工大学 | Preparation method of ultrahigh Sn content high-density low-segregation copper-tin alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105463291B (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105463291A (en) | Fully-prealloyed powder and preparation method thereof | |
| CN108441706B (en) | High-entropy alloy reinforced nickel-aluminum composite material and preparation method thereof | |
| CN102350497B (en) | High-compressibility water atomization iron powder and preparation method thereof | |
| CN102383021B (en) | WC-Co hard alloy with binding phase enhanced by Ni3Al and preparation method thereof | |
| CN103921017B (en) | A kind of welding rod supporting containing Ni low-temperature steel | |
| CN104342592B (en) | High-titanium-carbide steel bond hard alloy mold material | |
| CN101658930B (en) | Water atomizing steel powder used for high-compressibility sintering hardening and production method thereof | |
| WO2018053940A1 (en) | Non-magnetic steel product and powder metallurgy manufacturing method therefor | |
| CN107245628B (en) | Make the cemented carbide material and preparation method thereof of Binder Phase using Ni-Cu continuous solid solution | |
| CN105441765B (en) | Bullet high-specific gravity tungsten alloy and preparation method thereof | |
| CN105886871A (en) | High-strength hard alloy with titanium carbide as main component and preparation method of high-strength hard alloy | |
| CN102154582A (en) | Hard alloy taking nickel-aluminium intermetallic compound Ni3Al as binding phase and preparation method | |
| CN108188405B (en) | Method for improving ball milling dispersion uniformity of hard alloy mixture | |
| CN102433486A (en) | Tungsten carbide-intermetallic compound hard alloy of twin structure and preparation method thereof | |
| CN102134663B (en) | Hard alloy with iron-aluminum intermetallic compound as main binding phase and preparation method of hard alloy | |
| CN112662930A (en) | High-entropy die steel material and preparation method thereof | |
| CN110229989B (en) | Multi-element hard alloy and preparation method thereof | |
| US20130236349A1 (en) | Industrial method for producing dispersion-strengthened iron-based materials at low cost and in large-scale | |
| CN108823444B (en) | Short-process preparation method of copper-carbon composite material | |
| CN102965532B (en) | Preparation method for fully-compact W-Ni-Mn heavy alloy | |
| CN110016621B (en) | Powder metallurgy high-manganese austenite non-magnetic steel and preparation method thereof | |
| CN102151834A (en) | Al2O3-cobalt-based adhesive phase-containing ultrafine hard alloy powder and preparation method and use thereof | |
| CN103447545B (en) | Method for preparing iron-based friction material by utilizing vacuum carbothermal in-situ reactive sintering from vanadium-titanium magnetite | |
| CN110508820B (en) | High-permeability copper infiltrated powder and manufacturing method thereof | |
| CN114381623B (en) | Preparation method of boron-containing high-specific-gravity tungsten-based alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 050035 Yangtze River Avenue 289, Shijiazhuang High-tech Zone, Hebei Province Patentee after: Boshen Co.,Ltd. Address before: 050035 Haihedao No. 10, Shijiazhuang High-tech Zone, Hebei Province Patentee before: BOSUN TOOLS Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Fully pre alloyed powder and its preparation method Effective date of registration: 20210922 Granted publication date: 20170322 Pledgee: Handan Bank Co.,Ltd. Shijiazhuang Ping'an sub branch Pledgor: Boshen Co.,Ltd. Registration number: Y2021130000026 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231225 Granted publication date: 20170322 Pledgee: Handan Bank Co.,Ltd. Shijiazhuang Ping'an sub branch Pledgor: Boshen Co.,Ltd. Registration number: Y2021130000026 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |