CN106119657A - A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof - Google Patents
A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof Download PDFInfo
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- CN106119657A CN106119657A CN201610651535.4A CN201610651535A CN106119657A CN 106119657 A CN106119657 A CN 106119657A CN 201610651535 A CN201610651535 A CN 201610651535A CN 106119657 A CN106119657 A CN 106119657A
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- hard alloy
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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
- C22C29/14—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides
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- 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 having high-wearing feature and high tenacity concurrently and preparation method thereof, it is characterized in that, in terms of mass parts, including following dusty raw materials: titanium diboride 42 56 parts, two chromium boride 15 23 parts, chromium carbide 10 15 parts, tungsten carbide 9 12 parts, niobium carbide 8 13 parts, binding agent are molybdenum 48 parts.The Cemented Carbide Hardness of the present invention is high, and has wearability and the toughness of excellence, and without layering, crackle, fatigue strength, fracture strength etc. all meets industry standard.
Description
Technical field
The present invention relates to metal alloy compositions field, particularly relate to a kind of hard alloy.
Background technology
Hard alloy powder metallurgic method produces, by refractory metal compound (hard phase) and binding metal (bonding
Phase) composite that constituted.
Along with the development of cemented carbide industry, the performance of hard alloy is had higher requirement, in general, hard
The wearability of alloy, toughness both sides relation is contradiction: the raising of wearability will cause toughness to reduce, and the raising of toughness must
So cause the reduction of wearability.Therefore the hard alloy of wearability and toughness need a kind of be had concurrently to meet requirement.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of hard alloy hard alloy having wearability and toughness concurrently.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, in terms of mass parts, including following powder
Raw material: titanium diboride 42-56 part, two chromium boride 15-23 parts, chromium carbide 10-15 part, tungsten carbide 9-12 part, niobium carbide 8-13 part,
Binding agent is molybdenum 4-8 part.
The grain size of described tungsten carbide is 1-3 μm.
Described hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, comprises the steps:
(1), each powder stock input ball mill being carried out ball milling, Ball-milling Time is 12-72h, rotational speed of ball-mill 120-250 turns/
Minute；
(2), sieved by the compound after ball milling, be dried, pelletize obtains carbide alloy mixture；In described granulating working procedure, also add
Having entered the forming agent that consumption is hard alloy material weight 3-8%, described forming agent is at least selected from polyvinyl alcohol, rubber and paraffin
In any one；
(3), by repressed for compound molding, pressing pressure is 150-200 MPa；
(4) carrying out degreasing process, again, skimming temp is 150-260 DEG C, heating rate 2-5 DEG C/min, be incubated 10 minutes with
On；
(5), by compressing semi-finished product sintering, noble gas sintering or vacuum-sintering, sintering temperature 1350-1480 are used
DEG C, heating rate is 12-18 DEG C/min, once insulation 5-8 minute of often heating up.
Beneficial effect: the Cemented Carbide Hardness of the present invention is high, has wearability and the toughness of excellence concurrently, without layering,
Crackle, fatigue strength, fracture strength etc. all reaches industry standard.
Detailed description of the invention
With embodiment, the present invention is explained in detail below.
Embodiment 1
A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, in terms of mass parts, including following powder
Raw material: titanium diboride 48 parts, two chromium boride 22 parts, chromium carbide 13 parts, tungsten carbide 11 parts, niobium carbide 9 parts, binding agent are molybdenum 6 parts.
The grain size of described tungsten carbide is 1-3 μm.
Described hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, comprises the steps:
(1), each powder stock input ball mill being carried out ball milling, Ball-milling Time is 12-72h, rotational speed of ball-mill 200-240 turns/
Minute；
(2), sieved by the compound after ball milling, be dried, pelletize obtains carbide alloy mixture；In described granulating working procedure, also add
Having entered the forming agent that consumption is hard alloy material weight 5%, described forming agent is polyvinyl alcohol；
(3), by repressed for compound molding, pressing pressure is 160-180MPa；
(4) carrying out degreasing process, again, skimming temp is 190-220 DEG C, heating rate 2-5 DEG C/min, be incubated 10 minutes with
On；
(5), by compressing semi-finished product sintering, noble gas sintering or vacuum-sintering, sintering temperature 1350-1480 are used
DEG C, heating rate is 15 DEG C, once insulation 6 minutes of often heating up.
Hard alloy toughness (Ak) prepared by the present embodiment is 8.7N.m/cm2, and hardness is 102HRA
Embodiment 2
A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, in terms of mass parts, including following powder
Raw material: titanium diboride 54 parts, two chromium boride 15 parts, chromium carbide 10 parts, tungsten carbide 9 parts, niobium carbide 8 parts, binding agent are molybdenum 4 parts.
The grain size of described tungsten carbide is 1-3 μm.
Preparation process is with embodiment 1
Hard alloy toughness (Ak) prepared by the present embodiment is 8.4N.m/cm2, and hardness is 100HRA
Embodiment 3
A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, in terms of mass parts, including following powder
Raw material: titanium diboride 56 parts, two chromium boride 23 parts, chromium carbide 15 parts, tungsten carbide 12 parts, niobium carbide 13 parts, binding agent are molybdenum 8
Part.
The grain size of described tungsten carbide is 1-3 μm.
Preparation process is with embodiment 1
Hard alloy toughness (Ak) prepared by the present embodiment is 8.3N.m/cm2, and hardness is 100HRA
Comparative example 1
Dusty raw materials titanium diboride in embodiment 1 and tungsten carbide are replaced, i.e. titanium diboride 11 parts, tungsten carbide 48 parts, other
Component content and preparation process are with embodiment 1.
Hard alloy toughness (Ak) prepared by this comparative example is 4.3N.m/cm2, and hardness is 87HRA
Comparative example 2
Binding agent in embodiment 1 is changed cobalt 6 parts, other component contents and preparation process into embodiment 1.
The grain size of described tungsten carbide is 1-3 μm.
Hard alloy toughness (Ak) prepared by this comparative example is 3.7N.m/cm2, and hardness is 84HRA
Above example not thereby limits the scope of the claims of the present invention, every replacement made in scope of the present invention or
Change, be encompassed by the range of claims of the present invention protection.
Claims (3)
1. hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof, it is characterised in that in terms of mass parts, bag
Include following dusty raw materials: titanium diboride 42-56 part, two chromium boride 15-23 parts, chromium carbide 10-15 part, tungsten carbide 9-12 part,
Niobium carbide 8-13 part, binding agent are molybdenum 4-8 part.
Hard alloy having high-wearing feature and high tenacity concurrently the most according to claim 1 and preparation method thereof, its feature exists
In, the grain size of described tungsten carbide is 1-3 μm.
3. one kind according to hard alloy having high-wearing feature and high tenacity concurrently described in claim 1-2 and preparation method thereof, bag
Include following steps:
(1), each powder stock input ball mill being carried out ball milling, Ball-milling Time is 12-72h, rotational speed of ball-mill 120-250 turns/
Minute；
(2), sieved by the compound after ball milling, be dried, pelletize obtains carbide alloy mixture；In described granulating working procedure, also add
Having entered the forming agent that consumption is hard alloy material weight 3-8%, described forming agent is at least selected from polyvinyl alcohol, rubber and paraffin
In any one；
(3), by repressed for compound molding, pressing pressure is 150-200 Mpa；
(4) carrying out degreasing process, again, skimming temp is 150-260 DEG C, heating rate 2-5 DEG C/min, be incubated 10 minutes with
On；
(5), by compressing semi-finished product sintering, noble gas sintering or vacuum-sintering, sintering temperature 1350-1480 are used
DEG C, heating rate is 12-18 DEG C/min, once insulation 5-8 minute of often heating up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651535.4A CN106119657A (en) | 2016-08-11 | 2016-08-11 | A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651535.4A CN106119657A (en) | 2016-08-11 | 2016-08-11 | A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106119657A true CN106119657A (en) | 2016-11-16 |
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| CN201610651535.4A Pending CN106119657A (en) | 2016-08-11 | 2016-08-11 | A kind of hard alloy having high-wearing feature and high tenacity concurrently and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756403A (en) * | 2016-12-09 | 2017-05-31 | 大连圣洁真空技术开发有限公司开发区分公司 | A kind of accurate combination broach processing technology |
| CN108277413A (en) * | 2018-02-28 | 2018-07-13 | 湖南天益高技术材料制造有限公司 | A kind of 3D glass heats bender high temperature resistant soaking plate and its manufacturing process |
-
2016
- 2016-08-11 CN CN201610651535.4A patent/CN106119657A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756403A (en) * | 2016-12-09 | 2017-05-31 | 大连圣洁真空技术开发有限公司开发区分公司 | A kind of accurate combination broach processing technology |
| CN108277413A (en) * | 2018-02-28 | 2018-07-13 | 湖南天益高技术材料制造有限公司 | A kind of 3D glass heats bender high temperature resistant soaking plate and its manufacturing process |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161116 |