CN105200296A - Superhard alloy - Google Patents
Superhard alloy Download PDFInfo
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- CN105200296A CN105200296A CN201510633654.2A CN201510633654A CN105200296A CN 105200296 A CN105200296 A CN 105200296A CN 201510633654 A CN201510633654 A CN 201510633654A CN 105200296 A CN105200296 A CN 105200296A
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- wimet
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Abstract
The invention belongs to the technical field of hard alloys, particularly relates to a superhard alloy and solves the technical problem by providing a superhard alloy high in hardness and low in crushability. The superhard alloy comprises, by weight, 85-90% of a hard phase, 0.05-0.09% of copper, 0.03-0.15% of europium, 3-5% of silicon, 4-8% of aluminum oxide, and the balance of iron and unavoidable impurities. The hard phase comprises titanium vanadium carbide and tungsten carbide, wherein a vanadium/titanium molar ratio is 0.6-0.8, and a weight ratio of the titanium vanadium carbide to the tungsten carbide is 1:1.5. The superhard alloy has the advantages that the use of silicon as a raw material for the superhard alloy may effectively improve the hardness of the alloy, the addition of a certain amount of aluminum oxide effectively improves bending strength of the alloy, and thus the quality of the alloy is improved, production cost is saved and production efficiency is improved.
Description
Technical field
The invention belongs to Wimet technical field, be specifically related to a kind of superhard Wimet.
Background technology
Wimet is a kind of alloy material be made up by powder metallurgical technique of the hard compounds of refractory metal and matrix metal.
Wimet has that hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant, and particularly its high rigidity and wear resistance, even if also substantially remain unchanged at the temperature of 500 DEG C, still have very high hardness 1000 DEG C time.
Traditional Wimet manufacture high, production efficiency is low, flow process is complicated, and due to tungsten cobalt contents higher, cause its fragility and sintering temperature greatly to increase, bending strength is poor, flexible not enough.
Summary of the invention
(1) technical problem that will solve
The present invention is in order to overcome the shortcoming that existing Wimet fragility is large, bending strength is poor, flow process is complicated, and the technical problem to be solved in the present invention is to provide that a kind of hardness is large, bending strength is high, the better simply superhard Wimet of Making programme.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides so a kind of superhard Wimet and manufacturing process thereof, specific as follows:
A kind of superhard Wimet, the raw material of described superhard Wimet and composition by weight percentage thereof are: hard phase 85-90%, copper 0.05-0.09%, europium 0.03-0.15%, silicon 3-5%, aluminium sesquioxide 4-8%, and surplus is iron and inevitable impurity; Described hard phase is vanadium carbide titanium and wolfram varbide, and wherein vanadium/titanium mol ratio is 0.6-0.8, and the weight ratio of vanadium carbide titanium and wolfram varbide is 1:1.5.
A manufacturing process for superhard Wimet, comprises the following steps:
A. by described superhard Wimet manufacture raw material and take titanium carbide, vanadium carbide, wolfram varbide, reduced iron powder, copper, europium, silicon, aluminium sesquioxide by the percentage of quality;
B. raw material mixing step a taken, under the protection of the environment of isolated air, levigate, cross 320-500 mesh sieve, obtain powder pellet, dry, then add 1wt%-1.5wt% polyglycol solution, fully stir, cross 45-60 mesh sieve, obtain particulate material;
C. particulate material is put into mould, with the pressure compression moulding of 800-900MPa, compacting duration 80 ~ 100s, obtains briquet;
D. briquet is placed in vacuum oven, at 300-350 DEG C, sintering 125-150 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
E. at 500-550 DEG C, sintering 35-45 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
F. at 600-650 DEG C, sintering 10-15 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
G. at 700-750 DEG C, sintering 50-60 minute, the inner absolute pressure of vacuum oven is less than or equal to 2Pa;
H. at 300-350 DEG C, sintering 65-75 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
I. at 200-300 DEG C, sintering 30-35 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
J. at 100-150 DEG C, sintering 20-25 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
K. be positioned in stove, be down to normal temperature.
(3) beneficial effect
Employ silicon in Hardmetal materials of the present invention, can effectively put forward heavy alloyed hardness, low-alloyed broken degree can be fallen owing to adding a certain amount of aluminium sesquioxide simultaneously, its bending strength of effective raising, thus improve the quality of Wimet, save production cost, enhance productivity.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
A kind of superhard Wimet, it is characterized in that, comprise the composition of following weight percent, hard phase 85%, copper 0.05%, europium 0.03%, silicon 3%, aluminium sesquioxide 4%, wolfram varbide, surplus is iron and inevitable impurity; Described hard phase is vanadium carbide titanium and wolfram varbide, and wherein vanadium/titanium mol ratio is 0.6 ~ 0.8, and the weight ratio of vanadium carbide titanium and wolfram varbide is 1:1.5.
Embodiment 2
A kind of superhard Wimet, it is characterized in that, comprise the composition of following weight percent, hard phase 90%, copper 0.09%, europium 0.15%, silicon 5%, aluminium sesquioxide 8%, wolfram varbide, surplus is iron and inevitable impurity; Described hard phase is vanadium carbide titanium and wolfram varbide, and wherein vanadium/titanium mol ratio is 0.6 ~ 0.8, and the weight ratio of vanadium carbide titanium and wolfram varbide is 1:1.5.
Embodiment 3
A kind of superhard Wimet, it is characterized in that, comprise the composition of following weight percent, hard phase 88%, copper 0.06%, europium 0.12%, silicon 3%, aluminium sesquioxide 4.5%, wolfram varbide, surplus is iron and inevitable impurity; Described hard phase is vanadium carbide titanium and wolfram varbide, and wherein vanadium/titanium mol ratio is 0.6 ~ 0.8, and the weight ratio of vanadium carbide titanium and wolfram varbide is 1:1.5.
Embodiment 4
A. titanium carbide, vanadium carbide, wolfram varbide, reduced iron powder, copper, europium, silicon, aluminium sesquioxide is taken in proportion;
B. raw material mixing step a taken, under the protection of the environment of isolated air, levigate, cross 320-500 mesh sieve, obtain powder pellet, dry, then add 1wt%-1.5wt% polyglycol solution, fully stir, cross 45-60 mesh sieve, obtain particulate material;
C. particulate material is put into mould, with the pressure compression moulding of 800-900MPa, compacting duration 80 ~ 100s, obtains briquet;
D. briquet is placed in vacuum oven, at 300-350 DEG C, sintering 125-150 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
E. at 500-550 DEG C, sintering 35-45 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
F. at 600-650 DEG C, sintering 10-15 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
G. at 700-750 DEG C, sintering 50-60 minute, the inner absolute pressure of vacuum oven is less than or equal to 2Pa;
H. at 300-350 DEG C, sintering 65-75 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
I. at 200-300 DEG C, sintering 30-35 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
J. at 100-150 DEG C, sintering 20-25 minute, the inner absolute pressure of vacuum oven is less than or equal to 3Pa;
Be positioned in stove, be down to normal temperature and get superhard Wimet 5 × 5 × 3 centimetres of 10 block samples made, tested by automatic Rockwell hardometer, test result is in table 1.
Table 1 Wimet test block hardness test recorder
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 82HRC | 80HRC | 83HRC | 79HRC | 81HRC | 78HRC | 79HRC | 81HRC | 80HRC | 82HRC |
Result shows, and reaches the requirement of superhard Wimet.
The above embodiment only have expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion, improvement and substitute, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (1)
1. a superhard Wimet, is characterized in that, the raw material of described superhard Wimet and composition by weight percentage thereof are: hard phase 85-90%, copper 0.05-0.09%, europium 0.03-0.15%, silicon 3-5%, aluminium sesquioxide 4-8%, surplus is iron and inevitable impurity; Described hard phase is vanadium carbide titanium and wolfram varbide, and wherein vanadium/titanium mol ratio is 0.6-0.8, and the weight ratio of vanadium carbide titanium and wolfram varbide is 1:1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633654.2A CN105200296A (en) | 2015-09-30 | 2015-09-30 | Superhard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633654.2A CN105200296A (en) | 2015-09-30 | 2015-09-30 | Superhard alloy |
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| CN105200296A true CN105200296A (en) | 2015-12-30 |
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| CN201510633654.2A Pending CN105200296A (en) | 2015-09-30 | 2015-09-30 | Superhard alloy |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285187A (en) * | 2008-05-15 | 2008-10-15 | 西北工业大学 | Method for preparing particulate reinforced metal-based composite material |
| CN101910354A (en) * | 2008-02-14 | 2010-12-08 | 六号元素有限公司 | Method for manufacturing encapsulated superhard material |
| CN103266249A (en) * | 2013-05-24 | 2013-08-28 | 成都工业学院 | Vanadium titanium carbide hard alloy and drilling bit prepared from same and preparation method |
| CN104004952A (en) * | 2014-06-10 | 2014-08-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium-based cemented carbide and preparation method thereof |
-
2015
- 2015-09-30 CN CN201510633654.2A patent/CN105200296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910354A (en) * | 2008-02-14 | 2010-12-08 | 六号元素有限公司 | Method for manufacturing encapsulated superhard material |
| CN101285187A (en) * | 2008-05-15 | 2008-10-15 | 西北工业大学 | Method for preparing particulate reinforced metal-based composite material |
| CN103266249A (en) * | 2013-05-24 | 2013-08-28 | 成都工业学院 | Vanadium titanium carbide hard alloy and drilling bit prepared from same and preparation method |
| CN104004952A (en) * | 2014-06-10 | 2014-08-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium-based cemented carbide and preparation method thereof |
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Application publication date: 20151230 |