CN109972016A - A kind of hard alloy in low cobalt material and preparation method thereof - Google Patents
A kind of hard alloy in low cobalt material and preparation method thereof Download PDFInfo
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- CN109972016A CN109972016A CN201711501067.3A CN201711501067A CN109972016A CN 109972016 A CN109972016 A CN 109972016A CN 201711501067 A CN201711501067 A CN 201711501067A CN 109972016 A CN109972016 A CN 109972016A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of hard alloy in low cobalt materials and preparation method thereof, it specifically includes: with 80 parts of WC powder that granularity is 400 mesh, 4-16 parts of carbonyl iron dust, 1-5 parts of carbonyl nickel powder, cobalt powder 2-15 parts of reduction is raw material, obtains hard alloy in low cobalt by being heat-treated after pretreatment, pre-sintering, reheating knot, sintering.Gained hard alloy in low cobalt comprehensive performance of the invention is suitable with tradition WC-20%Co hard alloy, and hardness and compactness are also advantageous over WC-20%Co hard alloy.
Description
Technical field
The present invention relates to hard alloy technical field, specifically a kind of cemented carbide material.
Background technique
Hard alloy is because having unique combining properties, i.e. high compressive strength, excellent abrasive resistance, high rigidity, high resiliency mould
Amount, shock resistance is strong, vibration resistance is good, corrosion-resistant good and good stability of the dimension etc., is especially still able to maintain at high temperature higher hard
Degree and intensity.So that it almost becomes indispensable structural material and tool and mould material in all new technical fields and industrial department
Material, is widely used in defence and military, metal cutting, and nonmetallic cutting operation (such as ore, petroleum, natural gas drilling) is handed over
Logical transport service, building, the fields such as metal forming are known as " industrial tooth ".Since the 1920s, cobalt is always hard
The main binder of alloy.This is because cobalt has good wetability and caking property to hard phases such as WC, in addition, WC is in Co
There is certain solubility, to make the WC base cemented carbide using cobalt as binder that there is high intensity, high rigidity, high-wearing feature etc.
A series of excellent performances.But cobalt is a kind of valuableness and rare metal, world saving are extremely limited.Therefore, it is closed in hard
In the development history of metal working industry, the hard alloy scientists and engineers of countries in the world are used in continuous thinking, development test always
The metal or alloy substituted metal cobalt relatively inexpensive, strategic position is less important makees the binder of hard alloy.
Summary of the invention
In view of the above problems, synthesis is obtained with iron, the pure co binder of nickel substitution the purpose of the present invention is to provide a kind of
Performance and the comparable hard alloy in low cobalt material of traditional WC-Co hard alloy, to reduce the production cost of hard alloy, reduction pair
The use of strategic material cobalt.
The invention is realized by the following technical scheme:
(1) with 80 parts of WC powder that granularity is 400 mesh, 4-16 parts of carbonyl iron dust, 1-5 parts of carbonyl nickel powder, cobalt powder 2-15 is restored
Part is raw material, passes through heat treatment procedure after pretreatment, pre-sintering, reheating knot, sintering and obtains hard alloy in low cobalt.Hard phase is
WC, Binder Phase are made of Fe, Ni and Co.
(2) pretreatment includes: to carry out wet-milling to prepared powder using anhydrous (oxygen) lapping liquid first, then by powder
Body is packed into mixing in three-dimensional material mixer mixing machine, and steel ball ball milling is added, and completes mixing；After mixing, be added binder and
Lubricant is pressed powder with four column pneumatic presses.The drying of mixture, the mistake for mixing binder and lubricant
Journey will carry out in protective atmosphere (or under vacuum condition).
(3) pre-sintering includes: that the powder of compression moulding is packed into graphite jig, and setting is sintered 930 DEG C of maximum temperature,
Pressure 300kg/cm2, vacuum high-pressure is sintered 30min, then air-cooled.
(4) to include: room temperature be sintered 45 minutes to 600 DEG C the reheating knot, and 600 DEG C to 800 DEG C are sintered 25 minutes, 800 DEG C
It is sintered 30 minutes to 1000 DEG C, 1000 DEG C to 1200 DEG C are sintered 35 minutes, and 1200 DEG C to 1400 DEG C are sintered 45 minutes, and 1400 DEG C extremely
1460 DEG C are sintered 90 minutes.After heating and thermal insulation, sample furnace cooling.Vacuum degree must be controlled in 0.5Pa in sintering process
It is interior.
(5) hard alloy in low cobalt is observed by microscopic structure, can obviously observe α, γ, η phase, alloy has crystallized
It is kind.
(6) at 12 parts of hard alloy in low cobalt iron shown in, 3 parts of nickel, 5 parts of cobalt, the hardness of alloy reaches peak.
The present invention is by being prepared for hard alloy in low cobalt, the hardness of gained hard alloy, densification for the method for cobalt with iron nickel
Degree is suitable with WC-20%Co hard alloy, to reduce the production cost of hard alloy, reduces to strategic materials Co's
It relies on.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of cemented carbide material: including 80 parts of hard phase, 14 parts of iron, 4 parts of nickel, 2 parts of cobalt.Hard phase is made of WC, is glued
Knot is mutually made of Fe, Ni and Co.Gained cemented carbide material consistency is after pretreatment, pre-sintering and weight sintering process
92.6%, hardness 84.73HRA, bending strength 1936MPa.
Embodiment 2
A kind of cemented carbide material: including 80 parts of hard phase, 12 parts of iron, 3 parts of nickel, 5 parts of cobalt.Hard phase is made of WC, is glued
Knot is mutually made of Fe, Ni and Co.Gained cemented carbide material consistency is after pretreatment, pre-sintering and weight sintering process
93.5%, hardness 88.1HRA, bending strength 2011MPa.
Embodiment 3
A kind of cemented carbide material: including 80 parts of hard phase, 4 parts of iron, 1 part of nickel, 15 parts of cobalt.Hard phase is made of WC, is glued
Knot is mutually made of Fe, Ni and Co.Gained cemented carbide material consistency is after pretreatment, pre-sintering and weight sintering process
93.4%, hardness 86.9HRA, bending strength 2109MPa.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (7)
1. a kind of hard alloy in low cobalt material and preparation method thereof, it is characterised in that: with 80 parts of WC powder that granularity is 400 mesh, carbonyl
4-16 parts of base iron powder, 1-5 parts of carbonyl nickel powder, cobalt powder 2-15 parts of reduction is raw material, by pretreatment, pre-sintering, reheating knot, is burnt
Heat treatment procedure obtains hard alloy in low cobalt after knot.
2. cemented carbide material according to claim 1, it is characterised in that: hard phase WC, Binder Phase is by Fe, Ni and Co
Composition.
3. preparation method according to claim 1, it is characterised in that: when pretreatment, first use anhydrous (oxygen) lapping liquid pair
Prepared powder carries out wet-milling, then powder is packed into three-dimensional material mixer mixing machine and is mixed, and steel ball ball milling is added, and completes mixed
Material；After mixing, binder and lubricant are added, powder is pressed with four column pneumatic presses.Mixture
Drying, incorporation binder and the process of lubricant to be carried out in protective atmosphere (or under vacuum condition).
4. preparation method according to claim 1, it is characterised in that: during pre-sintering, the powder of compression moulding is filled
Enter graphite jig, 930 DEG C of maximum temperature of setting sintering, pressure 300kg/cm2, vacuum high-pressure is sintered 30min, then air-cooled.
5. preparation method according to claim 1, it is characterised in that: when reheating knot, room temperature to 600 DEG C be sintered 40 minutes,
600 DEG C to 800 DEG C be sintered 30 minutes, 800 DEG C to 1000 DEG C be sintered 30 minutes, 1000 DEG C to 1200 DEG C be sintered 35 minutes, 1200
DEG C to 1400 DEG C be sintered 45 minutes, 1400 DEG C to 1460 DEG C be sintered 90 minutes.After heating and thermal insulation, sample furnace cooling.It burns
Vacuum degree must control in 0.5Pa during knot.
6. cemented carbide material according to claim 1, it is characterised in that: the microscopic structure observation can be observed clearly
To α, γ, η phase, alloy crystallizes perfect.
7. cemented carbide material according to claim 1, it is characterised in that: 80 parts of shown hard phase, 12 parts of iron, 3 parts of nickel,
At 5 parts of cobalt, the hardness of alloy reaches peak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711501067.3A CN109972016A (en) | 2017-12-28 | 2017-12-28 | A kind of hard alloy in low cobalt material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711501067.3A CN109972016A (en) | 2017-12-28 | 2017-12-28 | A kind of hard alloy in low cobalt material and preparation method thereof |
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| CN109972016A true CN109972016A (en) | 2019-07-05 |
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| CN201711501067.3A Pending CN109972016A (en) | 2017-12-28 | 2017-12-28 | A kind of hard alloy in low cobalt material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229989A (en) * | 2019-05-09 | 2019-09-13 | 陕西理工大学 | A kind of polynary hard alloy and preparation method thereof |
| CN111254337A (en) * | 2020-03-10 | 2020-06-09 | 株洲明日硬质合金有限公司 | Hard alloy anti-skid nail core for automobile tire and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1268189A (en) * | 1997-08-27 | 2000-09-27 | 钴碳化钨硬质合金公司 | A rotary earth strata penetrating tool with a cermet insert having a Co-Ni-Fe binder |
| CN106166611A (en) * | 2016-08-13 | 2016-11-30 | 安徽鼎恒再制造产业技术研究院有限公司 | A kind of WC Co Fe Ni nano material and preparation method thereof |
-
2017
- 2017-12-28 CN CN201711501067.3A patent/CN109972016A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1268189A (en) * | 1997-08-27 | 2000-09-27 | 钴碳化钨硬质合金公司 | A rotary earth strata penetrating tool with a cermet insert having a Co-Ni-Fe binder |
| CN106166611A (en) * | 2016-08-13 | 2016-11-30 | 安徽鼎恒再制造产业技术研究院有限公司 | A kind of WC Co Fe Ni nano material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 唐鹏: "铁镍代钴型硬质合金应用研究", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229989A (en) * | 2019-05-09 | 2019-09-13 | 陕西理工大学 | A kind of polynary hard alloy and preparation method thereof |
| CN110229989B (en) * | 2019-05-09 | 2021-04-23 | 陕西理工大学 | Multi-element hard alloy and preparation method thereof |
| CN111254337A (en) * | 2020-03-10 | 2020-06-09 | 株洲明日硬质合金有限公司 | Hard alloy anti-skid nail core for automobile tire and preparation method thereof |
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Application publication date: 20190705 |