CN107914018A - A kind of iron Al binding agent diamond tool and preparation method thereof - Google Patents
A kind of iron Al binding agent diamond tool and preparation method thereof Download PDFInfo
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- CN107914018A CN107914018A CN201711002381.7A CN201711002381A CN107914018A CN 107914018 A CN107914018 A CN 107914018A CN 201711002381 A CN201711002381 A CN 201711002381A CN 107914018 A CN107914018 A CN 107914018A
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- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
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- 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
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- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- 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
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- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/002—Tools other than cutting tools
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- 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
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Abstract
The invention discloses a kind of iron Al binding agent diamond tool and preparation method thereof.This iron Al binding agent diamond tool includes bonding agent and abrasive material；Bonding agent is by 60~90 mass parts Fe Al mixed powders, 5~40 mass parts Si Fe alloyed powders, 0.5~3 mass parts Si powder, 0.5~1 mass parts B powder and 0.5~3 mass parts TiH2Powder forms；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume.The preparation method of this iron Al binding agent diamond tool is also disclosed that at the same time.The diamond tool of the present invention with the addition of Al-based agent in iron-binding agent, form iron Al binding agent Fe3Al, has excellent antioxygenic property, corrosion resistance and excellent mechanical property, can save manufacture cost and improve reaction efficiency, while can improve the sintering character and mechanical property of diamond tool using the bonding agent system that multiple additives combination obtains.
Description
Technical field
The present invention relates to a kind of iron Al binding agent diamond tool and preparation method thereof.
Background technology
Metal binding agent diamond tool is widely used in stone material, architectural pottery, glass, concrete, bituminous paving and cuts
Cut, drill, processing and forming.Metal binding agent diamond tool is mainly with copper-based, cobalt-based, iron-binding agent and diamond at present
Abrasive material is obtained by hot-pressing sintering method.The content of beary metal such as copper, cobalt, tin, zinc, lead in bonding agent are higher, on the one hand these
Metal dust cost of material is higher, and secondly, these heavy metals can cause environment certain huge sum of money in manufacture and application process
Belong to pollution, therefore from the perspective of cost-effective and is environmentally protective, be badly in need of research and development low cost environment friendly at present
Metal binding agent diamond tool and its manufacture method.
Domestic and foreign scholars are directed generally to prepare the environmental-friendly of the elements such as high performance no copper, cobalt, lead, tin, zinc at present
Type binding agent diamond tool, wherein iron-binding agent are exactly a kind of environmentally friendly diamond tool.Ferro element aboundresources,
It is of low cost, in natural environment aoxidize or decompose after consumption all without causing heavy metal pollution, and set by appropriate material
Meter can synthesize the diamond tool of excellent in mechanical performance.
Although iron-binding agent is a kind of preferable metallic bond, but factors limit it in metallic bond gold
Application on hard rock instrument.On the one hand, in sintering process, diamond easily reacts with iron and is etched and reduces intensity, another
Aspect, easily oxidation causes its sintering character and mechanical property deficiency to iron.Therefore, needed at present in iron-binding agent diamond tool
Alloying element is added to improve performance, its cost of raw material be continuously improved, and heavy metal element type and quantity also therefore and
Increase.
The content of the invention
It is an object of the invention to provide a kind of iron Al binding agent diamond tool and preparation method thereof.
The technical solution used in the present invention is：
A kind of iron Al binding agent diamond tool, including bonding agent and abrasive material；Bonding agent is mixed by 60~90 mass parts Fe-Al
Close powder, 5~40 mass parts Si-Fe alloyed powders, 0.5~3 mass parts Si powder, 0.5~1 mass parts B powder and 0.5~3 mass parts
TiH2Powder forms；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume.
Fe-Al mixed powders are Fe powder and Al powder in mass ratio 6.2:1 composition, the wherein particle diameter of Fe powder are 5~50 μm, Al powder
Particle diameter be 5~50 μm.
The mass content of Si is that the particle diameter of 14~16%, Si-Fe alloyed powders is 5~50 μm in Si-Fe alloyed powders.
The particle diameter of Si powder is 1~15 μm, and the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~10 μm.
The particle diameter of diamond abrasive is 20~120 mesh.
A kind of preparation method of iron Al binding agent diamond tool, comprises the following steps：
1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powders；
2) by Fe-Al mixed powders, Si-Fe alloyed powders, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill,
Obtain diamond tool and prepare material；
3) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；
4) diamond tool base substrate is sintered, obtains above-mentioned iron Al binding agent diamond tool.
In step 1) or step 2), the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h, and ratio of grinding media to material is
(5~10)：1.
In step 3), the green density of diamond tool base substrate is 50~70% solid densities, cold pressing pressure for 200~
300MPa。
In step 4), the mode of sintering is wherein one in discharge plasma sintering, hot pressed sintering, gas pressure sintering
Kind.
In step 4), sintering temperature is 600~1100 DEG C, and sintering time be 3~30min, sintering pressure is 30~
100MPa。
The beneficial effects of the invention are as follows：
The diamond tool of the present invention with the addition of Al-based agent in iron-binding agent, form iron Al binding agent
Fe3Al, has excellent anticorrosive and antioxygenic property, can save manufacture cost and improve reaction efficiency, while utilize more
Kind additive, which combines obtained bonding agent system, can improve the sintering character and mechanical property of diamond tool.
Specifically：
1) iron Al binding agent Fe3Al is relative to pure Cu (8.90g/cm3), pure Fe (7.86g/cm3) for, Fe3Al
(6.70g/cm3) density it is low, there is excellent anticorrosive and antioxygenic property, Fe3The characteristics of Al anomalous yields, makes it have good
Good medium temperature intensity, can substitute the materials such as high temperature alloy and heat resisting steel.
2) present invention utilizes the self-propagating reaction fabricated in situ Fe of Fe-Al3Al, the high enthalpy that self-propagating reaction provides reduce
Sintering temperature, so that manufacture cost has been saved, and the reaction is rapidly, can improve efficiency.
3) present invention is the sintering character and mechanical property of improvement system, and several different additions are with the addition of again in system
Agent, Si-Fe alloy powders, Si powder, B powder, TiH2Powder.Si elements in Si-Fe can reduce melting temperature, further reduce sintering
Temperature, makes up the defects of iron-binding agent is to sensitive.Add B and TiH2, it is formed in situ TiB2Can be to Fe3Al is formed more
Dissipate and strengthen, improve the intensity of diamond tool；In addition, B element can also improve Fe3The brittleness of Al, improves hardness；Ti elements then can
Improve binding ability, improve Fe3Holds of the Al to diamond abrasive.
Embodiment
A kind of iron Al binding agent diamond tool, including bonding agent and abrasive material；Bonding agent is mixed by 60~90 mass parts Fe-Al
Close powder, 5~40 mass parts Si-Fe alloyed powders, 0.5~3 mass parts Si powder, 0.5~1 mass parts B powder and 0.5~3 mass parts
TiH2Powder forms；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume.
Preferably, a kind of iron Al binding agent diamond tool, including bonding agent and abrasive material；Bonding agent is by 76~88 mass parts
Fe-Al mixed powders, 10~22 mass parts Si-Fe alloyed powders, 0.5~2 mass parts Si powder, 0.5~1 mass parts B powder and 0.5~1
Mass parts TiH2Powder forms；Abrasive material is diamond, and diamond abrasive accounts for the 15~25% of grinding working lining volume.
Further, diamond abrasive accounts for the 18.75~25% of grinding working lining volume.
Preferably, Fe-Al mixed powders are Fe powder and Al powder in mass ratio 6.2:1 composition, the wherein particle diameter of Fe powder are 5~50
μm, the particle diameter of Al powder is 5~50 μm；It is further preferred that the particle diameter of Fe powder is 10~40 μm, the particle diameter of Al powder is 10~40 μ
m。
Preferably, the mass content of Si is that the particle diameter of 14~16%, Si-Fe alloyed powders is 5~50 μ in Si-Fe alloyed powders
m；It is further preferred that the particle diameter of Si-Fe alloyed powders is 10~40 μm.
Preferably, the particle diameter of Si powder is 1~15 μm, and the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~10 μm；
It is further preferred that the particle diameter of Si powder is 5~10 μm, the particle diameter of B powder is 5~10 μm, TiH2The particle diameter of powder is 5~10 μm.
Preferably, the particle diameter of diamond abrasive is 20~120 mesh；It is further preferred that the particle diameter of diamond abrasive is 30
~60 mesh.
A kind of preparation method of iron Al binding agent diamond tool, comprises the following steps：
1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powders；
2) by Fe-Al mixed powders, Si-Fe alloyed powders, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill,
Obtain diamond tool and prepare material；
3) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；
4) diamond tool base substrate is sintered, obtains above-mentioned iron Al binding agent diamond tool.
Preferably, in step 1) or step 2), the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h,
Ratio of grinding media to material is (5~10)：1.
Further, in step 1) or step 2), the cumulative volume of abrading-ball and material is no more than the 2/3 of ball milling tank volume.
Preferably, in step 3), the green density of diamond tool base substrate is 50~70% solid densities, and cold pressing pressure is
200~300MPa.
Further, the cold moudling described in step 3) carries out in hard alloy cold stamping die.
Preferably, in step 4), the mode of sintering is discharge plasma sintering, in hot pressed sintering, gas pressure sintering
One of which.
Preferably, in step 4), sintering temperature is 600~1100 DEG C, and sintering time is 3~30min, sintering pressure 30
~100MPa；It is further preferred that in step 4), sintering temperature is 800~1000 DEG C, and sintering time is 8~12min, sintering
Pressure is 30~60MPa.
Fe powder, Al powder, Si powder, B powder and TiH of the present invention2The purity of powder is all higher than 99.9%.
Present disclosure is described in further detail below by way of specific embodiment.
Embodiment 1：
It is 6.2 by quality parts ratio:1 Fe powder is uniformly mixed in the ball mill with Al powder, and the rotating speed of ball mill is 200r/
Min, Ball-milling Time 3h, ratio of grinding media to material 5：1, ball milling is prepared into Fe-Al mixed powders, its mass fraction is 88 parts altogether, wherein Fe
The particle diameter of powder is 20 μm, and the particle diameter of Al powder is 20 μm；The mass fraction of Si-Fe alloy powders is 10 parts, its particle diameter is 20 μm；Si
The mass fraction of powder is 1 part, its particle diameter is 10 μm；The mass fraction of B powder is 0.5 part, its particle diameter is 5 μm；TiH2The matter of powder
It is 0.5 part to measure number, its particle diameter is 10 μm.Diamond abrasive is added, it is 25% it is accounted for grinding working lining volume, and mesh number is
50/60 mesh.By the bonding agent and abrasive material of aforementioned proportion, it is put into ball mill and is sufficiently mixed, drum's speed of rotation 150r/min, ball milling
Time is 3h, ratio of grinding media to material 5:1.Mixed instrument is prepared into material cold moudling in hard alloy cold stamping die, pressure
For 200MPa, the green density of obtained instrument base substrate is 50% solid density.Hot pressed sintering, sintering temperature are carried out to instrument base substrate
Spend for 800 DEG C, sintering time 10min, sintering pressure 30MPa, the thermal energy and pressure that instrument base substrate is provided by hot pressing furnace
React, finally obtain diamond tool.
Embodiment 2：
It is 6.2 by quality parts ratio:1 Fe powder is uniformly mixed in the ball mill with Al powder, and the rotating speed of ball mill is 200r/
Min, Ball-milling Time 3h, ratio of grinding media to material 5：1, ball milling is prepared into Fe-Al mixed powders, its mass fraction is 82 parts altogether, wherein Fe
The particle diameter of powder is 10 μm, and the particle diameter of Al powder is 10 μm；The mass fraction of Si-Fe alloy powders is 14.5 parts, its particle diameter is 10 μm；
The mass fraction of Si powder is 2 parts, its particle diameter is 5 μm；The mass fraction of B powder is 0.5 part, its particle diameter is 10 μm；TiH2Powder
Mass fraction is 1 part, its particle diameter is 5 μm.Diamond abrasive is added, it is 18.75% it is accounted for grinding working lining volume, mesh number
For 40/50 mesh.By the bonding agent and abrasive material of aforementioned proportion, it is put into ball mill and is sufficiently mixed, drum's speed of rotation 200r/min, ball
Consume time as 5h, ratio of grinding media to material 10:1.Mixed instrument is prepared into material cold moudling in hard alloy cold stamping die, is pressed
Power is 250MPa, and the green density of obtained instrument base substrate is 60% solid density.Gas pressure sintering is carried out to instrument base substrate,
Sintering temperature is 900 DEG C, sintering time 12min, sintering pressure 50MPa, and instrument base substrate relies on the thermal energy that hot pressing furnace provides
React with pressure, finally obtain diamond tool.
Embodiment 3：
It is 6.2 by quality parts ratio:1 Fe powder is uniformly mixed in the ball mill with Al powder, and the rotating speed of ball mill is 200r/
Min, Ball-milling Time 3h, ratio of grinding media to material 5：1, ball milling is prepared into Fe-Al mixed powders, its mass fraction is 76 parts altogether, Fe powder
Particle diameter is 40 μm, and the particle diameter of Al powder is 40 μm；The mass fraction of Si-Fe alloy powders is 22 parts, its particle diameter is 40 μm；Si powder
Mass fraction is 0.5 part, its particle diameter is 10 μm；The mass fraction of B powder is 1 part, its particle diameter is 10 μm；TiH2The mass parts of powder
Number is 0.5 part, its particle diameter is 5 μm.Diamond abrasive is added, it is 25% it is accounted for grinding working lining volume, mesh number 30/40
Mesh.By the bonding agent and abrasive material of aforementioned proportion, it is put into ball mill and is sufficiently mixed, drum's speed of rotation 250r/min, Ball-milling Time
For 4h, ratio of grinding media to material 9:1.Mixed instrument is prepared into material cold moudling in hard alloy cold stamping die, pressure is
300MPa, the green density of obtained instrument base substrate is 70% solid density.Hot pressed sintering, sintering temperature are carried out to instrument base substrate
For 1000 DEG C, sintering time 8min, sintering pressure 60MPa, thermal energy and pressure that instrument base substrate is provided by hot pressing furnace are sent out
Raw reaction, finally obtains diamond tool.
Claims (10)
- A kind of 1. iron Al binding agent diamond tool, it is characterised in that：Including bonding agent and abrasive material；Bonding agent is by 60~90 mass Part Fe-Al mixed powders, 5~40 mass parts Si-Fe alloyed powders, 0.5~3 mass parts Si powder, 0.5~1 mass parts B powder and 0.5~3 Mass parts TiH2Powder forms；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume.
- A kind of 2. iron Al binding agent diamond tool according to claim 1, it is characterised in that：Fe-Al mixed powders are Fe Powder and Al powder in mass ratio 6.2:1 composition, the wherein particle diameter of Fe powder are 5~50 μm, and the particle diameter of Al powder is 5~50 μm.
- A kind of 3. iron Al binding agent diamond tool according to claim 1, it is characterised in that：Si in Si-Fe alloyed powders Mass content be that the particle diameters of 14~16%, Si-Fe alloyed powders is 5~50 μm.
- A kind of 4. iron Al binding agent diamond tool according to claim 1, it is characterised in that：The particle diameter of Si powder for 1~ 15 μm, the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~10 μm.
- A kind of 5. iron Al binding agent diamond tool according to claim 1, it is characterised in that：The particle diameter of diamond abrasive For 20~120 mesh.
- A kind of 6. preparation method of iron Al binding agent diamond tool, it is characterised in that：Comprise the following steps：1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powders；2) by Fe-Al mixed powders, Si-Fe alloyed powders, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill, obtain gold Hard rock instrument prepares material；3) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；4) diamond tool base substrate is sintered, obtains Claims 1 to 5 any one of them iron Al binding agent Buddha's warrior attendant lapicide Tool.
- A kind of 7. preparation method of iron Al binding agent diamond tool according to claim 6, it is characterised in that：Step 1) Or in step 2), the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h, and ratio of grinding media to material is (5~10)：1.
- A kind of 8. preparation method of iron Al binding agent diamond tool according to claim 6, it is characterised in that：Step 3) In, the green density of diamond tool base substrate is 50~70% solid densities, and cold pressing pressure is 200~300MPa.
- A kind of 9. preparation method of iron Al binding agent diamond tool according to claim 6, it is characterised in that：Step 4) In, the mode of sintering is the one of which in discharge plasma sintering, hot pressed sintering, gas pressure sintering.
- A kind of 10. preparation method of iron Al binding agent diamond tool according to claim 9, it is characterised in that：Step 4) in, sintering temperature is 600~1100 DEG C, and sintering time is 3~30min, and sintering pressure is 30~100MPa.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181749A (en) * | 2007-12-19 | 2008-05-21 | 上海芬迪超硬材料科技有限公司 | Atomized alloyed powder substituting cobalt and nickel in diamond tools |
| CN102433486A (en) * | 2011-12-19 | 2012-05-02 | 株洲硬质合金集团有限公司 | Tungsten carbide-intermetallic compound hard alloy of twin structure and preparation method thereof |
| CN105773447A (en) * | 2016-05-24 | 2016-07-20 | 广东工业大学 | Novel dry type machining grinding tool and preparation method thereof |
-
2017
- 2017-10-24 CN CN201711002381.7A patent/CN107914018B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181749A (en) * | 2007-12-19 | 2008-05-21 | 上海芬迪超硬材料科技有限公司 | Atomized alloyed powder substituting cobalt and nickel in diamond tools |
| CN102433486A (en) * | 2011-12-19 | 2012-05-02 | 株洲硬质合金集团有限公司 | Tungsten carbide-intermetallic compound hard alloy of twin structure and preparation method thereof |
| CN105773447A (en) * | 2016-05-24 | 2016-07-20 | 广东工业大学 | Novel dry type machining grinding tool and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| 孙毓超等: "《金刚石工具制造理论与实践》", 31 May 2005, 郑州大学出版社 * |
| 易健宏: "《粉末冶金材料》", 31 July 2016, 中南大学出版社 * |
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