CN107914018B - 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 PDF

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CN107914018B
CN107914018B CN201711002381.7A CN201711002381A CN107914018B CN 107914018 B CN107914018 B CN 107914018B CN 201711002381 A CN201711002381 A CN 201711002381A CN 107914018 B CN107914018 B CN 107914018B
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powder
iron
diamond tool
binding agent
diamond
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CN107914018A (en
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张凤林
刘伟
陈家泓
尹自强
王素娟
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Guangdong University of Technology
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Guangdong University of Technology
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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
    • 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
    • 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%
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention discloses a kind of iron Al binding agent diamond tools 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 composition；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 simultaneously.Diamond tool of the invention is added to Al-based agent in iron-binding agent, forms iron Al binding agent Fe3Al has excellent antioxygenic property, corrosion resistance and excellent mechanical property, can save manufacturing 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

A kind of iron Al binding agent diamond tool and preparation method thereof
Technical field
The present invention relates to a kind of iron Al binding agent diamond tools and preparation method thereof.
Background technique
Metal binding agent diamond tool is widely used in stone material, architectural pottery, glass, concrete, bituminous pavement and cuts It cuts, 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 powder cost of material is higher, secondly, these heavy metals can cause certain huge sum of money to environment in manufacture and application process Belong to pollution, therefore from the viewpoint of save the cost and it is environmentally protective, at present be badly in need of research and development low cost environment friendly Metal binding agent diamond tool and its manufacturing 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 is exactly a kind of environmentally friendly diamond tool.Ferro element is resourceful, Low in cost, aoxidizing or decompose in the natural environment after consumption not will cause heavy metal pollution, and set by material appropriate Meter can synthesize the diamond tool of excellent in mechanical performance.
Although iron-binding agent is a kind of ideal metallic bond, but factors limit it in metallic bond gold Application on hard rock tool.On the one hand, during the sintering process, diamond easily reacts with iron and is etched and reduces intensity, another Aspect, iron is easy to oxidize to cause its sintering character and mechanical property insufficient.Therefore, it is needed in iron-binding agent diamond tool at present Alloying element is added to improve performance, the cost of raw material is continuously improved, and heavy metal element type and quantity also therefore and Increase.
Summary of the invention
The purpose of the present invention is to provide a kind of iron Al binding agent diamond tools 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 composition；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume.
Fe-Al mixed powder is that Fe powder and Al powder 6.2:1 in mass ratio are formed, and wherein the partial size of Fe powder is 5~50 μm, Al powder Partial size be 5~50 μm.
It is 5~50 μm that the mass content of Si, which is the partial size of 14~16%, Si-Fe alloyed powder, in Si-Fe alloyed powder.
The partial size of Si powder is 1~15 μm, and the partial size of B powder is 1~15 μm, TiH2The partial size of powder is 1~10 μm.
The partial size of diamond abrasive is 20~120 mesh.
A kind of preparation method of iron Al binding agent diamond tool, comprising the following steps:
1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powder；
2) by Fe-Al mixed powder, Si-Fe alloyed powder, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill, It obtains diamond tool and prepares material；
3) diamond tool is prepared into material cold moudling, obtains diamond tool green body；
4) diamond tool green body is sintered, obtains above-mentioned iron Al binding agent diamond tool.
In step 1) or step 2), the revolving 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 green body is 50~70% theoretical densities, cold pressing pressure is 200~ 300MPa。
In step 4), the mode of sintering is discharge plasma sintering, hot pressed sintering, wherein one in gas pressure sintering Kind.
In step 4), sintering temperature be 600~1100 DEG C, sintering time be 3~30min, sintering pressure be 30~ 100MPa。
The beneficial effects of the present invention are:
Diamond tool of the invention is added to Al-based agent in iron-binding agent, forms iron Al binding agent Fe3Al has excellent anticorrosive and antioxygenic property, can save manufacturing cost and improve reaction efficiency, while utilize more The bonding agent system that kind additive combination obtains 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, have excellent anticorrosive and antioxygenic property, Fe3The characteristics of Al anomalous yield, 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, to save manufacturing cost, and the reaction is rapidly, and efficiency can be improved.
3) present invention is the sintering character and mechanical property of improvement system, is added to several different additions again in system Agent, Si-Fe alloy powder, Si powder, B powder, TiH2Powder.Si element in Si-Fe can reduce melting temperature, further decrease sintering Temperature makes up iron-binding agent to the defect of high temperature sensitive.Add B and TiH2, TiB is formed in situ2It can be to Fe3Al is formed more It dissipates and strengthens, improve the intensity of diamond tool；In addition, B element can also improve Fe3The brittleness of Al improves hardness；Ti element then can Improve binding performance, improves Fe3Holding power of the Al to diamond abrasive.
Specific 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 composition；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 powder, 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 composition；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 powder is that Fe powder and Al powder 6.2:1 in mass ratio are formed, and wherein the partial size of Fe powder is 5~50 μm, the partial size of Al powder is 5~50 μm；It is further preferred that the partial size of Fe powder is 10~40 μm, the partial size of Al powder is 10~40 μ m。
Preferably, it is 5~50 μ that the mass content of Si, which is the partial size of 14~16%, Si-Fe alloyed powder, in Si-Fe alloyed powder m；It is further preferred that the partial size of Si-Fe alloyed powder is 10~40 μm.
Preferably, the partial size of Si powder is 1~15 μm, and the partial size of B powder is 1~15 μm, TiH2The partial size of powder is 1~10 μm； It is further preferred that the partial size of Si powder is 5~10 μm, the partial size of B powder is 5~10 μm, TiH2The partial size of powder is 5~10 μm.
Preferably, the partial size of diamond abrasive is 20~120 mesh；It is further preferred that the partial size of diamond abrasive is 30 ~60 mesh.
A kind of preparation method of iron Al binding agent diamond tool, comprising the following steps:
1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powder；
2) by Fe-Al mixed powder, Si-Fe alloyed powder, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill, It obtains diamond tool and prepares material；
3) diamond tool is prepared into material cold moudling, obtains diamond tool green body；
4) diamond tool green body is sintered, obtains above-mentioned iron Al binding agent diamond tool.
Preferably, in step 1) or step 2), the revolving 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 total 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 green body is 50~70% theoretical densities, and cold pressing pressure is 200~300MPa.
Further, 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 It is one of.
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 sintering temperature is 800~1000 DEG C in step 4), 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 larger than 99.9%.
The contents of the present invention are described in further detail below by way of specific embodiment.
Embodiment 1:
The Fe powder that mass parts ratio is 6.2:1 is uniformly mixed in the ball mill with Al powder, the revolving speed of ball mill is 200r/ Min, Ball-milling Time 3h, ratio of grinding media to material 5:1, ball milling are prepared into Fe-Al mixed powder, and mass fraction is 88 parts altogether, wherein Fe The partial size of powder is 20 μm, and the partial size of Al powder is 20 μm；The mass fraction of Si-Fe alloy powder is 10 parts, and partial size is 20 μm；Si The mass fraction of powder is 1 part, and partial size is 10 μm；The mass fraction of B powder is 0.5 part, and partial size is 5 μm；TiH2The matter of powder Measuring number is 0.5 part, and partial size is 10 μm.Diamond abrasive is added, it is made to account for grinding working lining volume 25%, 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 tool is prepared into material cold moudling in hard alloy cold stamping die, pressure For 200MPa, the green density of obtained tool green body is 50% theoretical density.Hot pressed sintering, sintering temperature are carried out to tool green body Degree is 800 DEG C, sintering time 10min, sintering pressure 30MPa, the thermal energy and pressure that tool green body relies on hot pressing furnace to provide It reacts, finally obtains diamond tool.
Embodiment 2:
The Fe powder that mass parts ratio is 6.2:1 is uniformly mixed in the ball mill with Al powder, the revolving speed of ball mill is 200r/ Min, Ball-milling Time 3h, ratio of grinding media to material 5:1, ball milling are prepared into Fe-Al mixed powder, and mass fraction is 82 parts altogether, wherein Fe The partial size of powder is 10 μm, and the partial size of Al powder is 10 μm；The mass fraction of Si-Fe alloy powder is 14.5 parts, and partial size is 10 μm； The mass fraction of Si powder is 2 parts, and partial size is 5 μm；The mass fraction of B powder is 0.5 part, and partial size is 10 μm；TiH2Powder Mass fraction is 1 part, and partial size is 5 μm.Diamond abrasive is added, it is made to account for grinding working lining volume 18.75%, 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 Time consuming is 5h, ratio of grinding media to material 10:1.Mixed tool is prepared into material cold moudling in hard alloy cold stamping die, is pressed Power is 250MPa, and the green density of obtained tool green body is 60% theoretical density.Gas pressure sintering is carried out to tool green body, Sintering temperature is 900 DEG C, sintering time 12min, sintering pressure 50MPa, the thermal energy that tool green body relies on hot pressing furnace to provide It reacts with pressure, finally obtains diamond tool.
Embodiment 3:
The Fe powder that mass parts ratio is 6.2:1 is uniformly mixed in the ball mill with Al powder, the revolving speed of ball mill is 200r/ Min, Ball-milling Time 3h, ratio of grinding media to material 5:1, ball milling are prepared into Fe-Al mixed powder, and mass fraction is 76 parts altogether, Fe powder Partial size is 40 μm, and the partial size of Al powder is 40 μm；The mass fraction of Si-Fe alloy powder is 22 parts, and partial size is 40 μm；Si powder Mass fraction is 0.5 part, and partial size is 10 μm；The mass fraction of B powder is 1 part, and partial size is 10 μm；TiH2The mass parts of powder Number is 0.5 part, and partial size is 5 μm.Diamond abrasive is added, it is made to account for grinding working lining volume 25%, 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 tool is prepared into material cold moudling in hard alloy cold stamping die, pressure is 300MPa, the green density of obtained tool green body are 70% theoretical density.Hot pressed sintering, sintering temperature are carried out to tool green body It is 1000 DEG C, sintering time 8min, sintering pressure 60MPa, the thermal energy and pressure hair that tool green body is provided by hot pressing furnace Raw reaction, finally obtains diamond tool.

Claims (6)

1. a kind of 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 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 composition；Abrasive material is diamond, and diamond abrasive accounts for the 5~25% of grinding working lining volume；The Fe-Al Mixed powder is that Fe powder and Al powder 6.2:1 in mass ratio are formed, and wherein the partial size of Fe powder is 5~50 μm, and the partial size of Al powder is 5~50 μm；It is 5~50 μm that the mass content of Si, which is the partial size of 14~16%, Si-Fe alloyed powder, in Si-Fe alloyed powder；The partial size of Si powder It is 1~15 μm, the partial size of B powder is 1~15 μm, TiH2The partial size of powder is 1~10 μm；The partial size of diamond abrasive is 20~120 Mesh.
2. a kind of preparation method of iron Al binding agent diamond tool, it is characterised in that: the following steps are included:
1) Fe powder and Al powder are mixed in ball mill, obtains Fe-Al mixed powder；
2) by Fe-Al mixed powder, Si-Fe alloyed powder, Si powder, B powder, TiH2Powder and diamond abrasive are mixed in ball mill, obtain gold Hard rock tool prepares material；
3) diamond tool is prepared into material cold moudling, obtains diamond tool green body；
4) diamond tool green body is sintered, obtains iron Al binding agent diamond tool described in claim 1.
3. a kind of preparation method of iron Al binding agent diamond tool according to claim 2, it is characterised in that: step 1) Or in step 2), the revolving 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.
4. a kind of preparation method of iron Al binding agent diamond tool according to claim 2, it is characterised in that: step 3) In, the green density of diamond tool green body is 50~70% theoretical densities, and cold pressing pressure is 200~300MPa.
5. a kind of preparation method of iron Al binding agent diamond tool according to claim 2, it is characterised in that: step 4) In, the mode of sintering is discharge plasma sintering, hot pressed sintering, the one of which in gas pressure sintering.
6. a kind of preparation method of iron Al binding agent diamond tool according to claim 5, 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.
CN201711002381.7A 2017-10-24 2017-10-24 A kind of iron Al binding agent diamond tool and preparation method thereof Active CN107914018B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
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
CN105773447A (en) * 2016-05-24 2016-07-20 广东工业大学 Novel dry type machining grinding tool and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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
CN105773447A (en) * 2016-05-24 2016-07-20 广东工业大学 Novel dry type machining grinding tool and preparation method thereof

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