CN106191604A - A kind of wearable lightweight hard alloy - Google Patents
A kind of wearable lightweight hard alloy Download PDFInfo
- Publication number
- CN106191604A CN106191604A CN201610651534.XA CN201610651534A CN106191604A CN 106191604 A CN106191604 A CN 106191604A CN 201610651534 A CN201610651534 A CN 201610651534A CN 106191604 A CN106191604 A CN 106191604A
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- parts
- hard alloy
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- carbide
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Classifications
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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
- C22C29/02—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
-
- 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
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The invention discloses a kind of wearable lightweight hard alloy and preparation method thereof, in terms of mass parts, including following raw material: hafnium carbide 34 52 parts, ramet 25 32 parts, vanadium nitride 14 25 parts, chromium carbide 9 16 parts, binding agent are 38 parts of nickel.Cemented Carbide Hardness prepared by the present invention is big, has wearability and the light weight of excellence, and without layering, crackle, toughness, fatigue strength, fracture strength etc. all reach 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,
Especially light-high-strength hard alloy bar technology, in general, the hard alloy of wearable lightweight need meet demand.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of wear-resisting and hard alloy of lightweight of holding concurrently.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of wearable lightweight hard alloy and preparation method thereof, in terms of mass parts, including following raw material: hafnium carbide 34-52 part, carbon
Change tantalum 25-32 part, vanadium nitride 14-25 part, chromium carbide 9-16 part, binding agent are nickel 3-8 part.
Described wearable lightweight hard alloy and preparation method thereof, step is as follows:
1) each powder stock input ball mill being carried out high speed ball milling, Ball-milling Time is 18-56h, rotational speed of ball-mill 840-960 turns/
Minute；
2) compound after ball milling is sieved, is dried, obtains carbide alloy mixture through pelletize again；In described granulating working procedure, add
Enter the forming agent polyvinyl alcohol that consumption is hard alloy material weight 3-9%；
3) by repressed for compound molding, pressing pressure is 280-350 MPa.
4) carrying out defat again, skimming temp is 200-280 DEG C, heating rate 1-5 DEG C/min, is incubated more than 20 minutes；
5) by compressing semi-finished product sintering, using vacuum-sintering, sintering temperature 1520-1580 DEG C, heating rate is 5-8
DEG C/min, once insulation 10-15 minute of often heating up.
Beneficial effect: prepared by the present invention Cemented Carbide Hardness is big, has wearability and the light weight of excellence, without layering,
Crackle, toughness, fatigue strength, fracture strength etc. all reach industry standard.
Detailed description of the invention
With embodiment, the present invention is explained in detail below.
Embodiment 1
A kind of wearable lightweight hard alloy and preparation method thereof, in terms of mass parts, including following raw material: hafnium carbide 42 parts, carbonization
Tantalum 28 parts, vanadium nitride 20 parts, chromium carbide 12 parts, binding agent are 5 parts of nickel.
Described wearable lightweight hard alloy and preparation method thereof, step is as follows:
1) each powder stock input ball mill being carried out high speed ball milling, Ball-milling Time is 50h, rotational speed of ball-mill 840-960 rev/min
Clock；
2) compound after ball milling is sieved, is dried, obtains carbide alloy mixture through pelletize again；In described granulating working procedure, add
Enter the forming agent polyvinyl alcohol that consumption is hard alloy material weight 8%；
3) by repressed for compound molding, pressing pressure is 320-340 MPa.
4) carrying out defat again, skimming temp is 220-280 DEG C, heating rate 3 DEG C/min, is incubated 20 minutes；
5) by compressing semi-finished product sintering, vacuum-sintering, sintering temperature 1520-1580 DEG C are used, heating rate is 5 DEG C/
Minute, once insulation 16 minutes of often heating up.
Cemented Carbide Hardness prepared by the present embodiment is 98HRA, and density is 9.17g/cm-3。
Embodiment 2
A kind of wearable lightweight hard alloy and preparation method thereof, in terms of mass parts, including following raw material: hafnium carbide 34 parts, carbonization
Tantalum 25 parts, vanadium nitride 14 parts, chromium carbide 9 parts, binding agent are 3 parts of nickel.
Preparation process is with embodiment 1
Cemented Carbide Hardness prepared by the present embodiment is 96HRA, and density is 9.04g/cm-3。
Embodiment 3
A kind of wearable lightweight hard alloy and preparation method thereof, in terms of mass parts, including following raw material: hafnium carbide 52 parts, carbonization
Tantalum 32 parts, vanadium nitride 25 parts, chromium carbide 16 parts, binding agent are 8 parts of nickel.
Preparation process is with embodiment 1
Cemented Carbide Hardness prepared by the present embodiment is 94HRA, and density is 9.21g/cm-3。
Comparative example 1
Dusty raw materials hafnium carbide in embodiment 1 is replaced with tungsten carbide, and other component contents and preparation process are with embodiment 1.
Cemented Carbide Hardness prepared by this comparative example is 86HRA, and density is 13.25g/cm-3。
Comparative example 2
Binding agent in embodiment 1 is changed cobalt 6 parts, other component contents and preparation process into embodiment 1.
Cemented Carbide Hardness prepared by this comparative example is 87HRA, and density is 12.85g/cm-3。
Above example not thereby limits the scope of the claims of the present invention, every made in scope of the present invention replace
Change or change, being encompassed by the range of claims of the present invention protection.
Claims (2)
1. wearable lightweight hard alloy and preparation method thereof, it is characterised in that in terms of mass parts, including following raw material: carbon
Change hafnium 34-52 part, ramet 25-32 part, vanadium nitride 14-25 part, chromium carbide 9-16 part, binding agent are nickel 3-8 part.
2. wearable lightweight hard alloy according to claim 1 and preparation method thereof, step is as follows:
1) each powder stock input ball mill being carried out high speed ball milling, Ball-milling Time is 18-56h, rotational speed of ball-mill 840-960 turns/
Minute；
2) compound after ball milling is sieved, is dried, obtains carbide alloy mixture through pelletize again；In described granulating working procedure, add
Enter the forming agent polyvinyl alcohol that consumption is hard alloy material weight 3-9%；
3) by repressed for compound molding, pressing pressure is 280-350 Mpa；
4) carrying out defat again, skimming temp is 200-280 DEG C, heating rate 1-5 DEG C/min, is incubated more than 20 minutes；
5) by compressing semi-finished product sintering, using vacuum-sintering, sintering temperature 1520-1580 DEG C, heating rate is 5-8
DEG C/min, once insulation 10-15 minute of often heating up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651534.XA CN106191604A (en) | 2016-08-11 | 2016-08-11 | A kind of wearable lightweight hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651534.XA CN106191604A (en) | 2016-08-11 | 2016-08-11 | A kind of wearable lightweight hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106191604A true CN106191604A (en) | 2016-12-07 |
Family
ID=57514034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610651534.XA Pending CN106191604A (en) | 2016-08-11 | 2016-08-11 | A kind of wearable lightweight hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106191604A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052599A (en) * | 2019-04-26 | 2019-07-26 | 四川一然新材料科技有限公司 | A kind of 108 or more low density rigid alloying pellet of diameter and preparation method thereof |
-
2016
- 2016-08-11 CN CN201610651534.XA patent/CN106191604A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052599A (en) * | 2019-04-26 | 2019-07-26 | 四川一然新材料科技有限公司 | A kind of 108 or more low density rigid alloying pellet of diameter and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |
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| WD01 | Invention patent application deemed withdrawn after publication |