CN104117676B - Rare earth modified tungstenio binder diamond bistrique, its manufacture method and rare earth modified tungstenio bonding agent - Google Patents
Rare earth modified tungstenio binder diamond bistrique, its manufacture method and rare earth modified tungstenio bonding agent Download PDFInfo
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- CN104117676B CN104117676B CN201410355255.XA CN201410355255A CN104117676B CN 104117676 B CN104117676 B CN 104117676B CN 201410355255 A CN201410355255 A CN 201410355255A CN 104117676 B CN104117676 B CN 104117676B
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Abstract
The invention discloses a kind of rare earth modified tungstenio binder diamond bistrique, its manufacture method and rare earth modified tungstenio bonding agent, this rare earth modified tungstenio bonding agent comprises: 40～75 parts of tungsten, 2～6 parts of nickel, ferrum 2～5 parts, 8～30 parts of stannum, copper 7～20 parts, 0.4～1 part of manganese, 0.1～1 part of rare earth element；Diamond dust and above-mentioned rare earth modified tungstenio bonding agent are sufficiently mixed, cold moudling；At 900～960 DEG C, carry out vacuum heating-press sintering under 90～200KN 25～35 minutes；Subsequently at 840～900 DEG C, carry out HIP sintering under 80～120MPa 5～10 minutes, obtain diamond grinding head crude product；Diamond grinding head crude product is repaired, obtains diamond grinding head finished product.The present invention can significantly improve the hold of diamond particles, increases the wearability of diamond grinding head, thus improving processing characteristics and diamond grinding head life-span.
Description
Technical field
The present invention relates to a kind of rare earth modified tungstenio binder diamond bistrique, its manufacture method and rare earth modified tungstenio bonding agent.
Background technology
Diamond grinding head is generally mounted on grinding machine, polisher, buffing machine or special instrument, is widely used in the grinding in field, grinding and the polishings such as optics, medical science, automobile.The metallic bond of diamond grinding head mainly includes iron-binding agent and cobalt base bonding agent.Iron-based diamond grinding head has higher mechanical property, and diamond also has good wettability, and with low cost, but its self-sharpening is not good enough；And cobalt-based diamond grinding head has good formability and sinterability, the wettability of diamond is good, cohesive force is big, good toughness, self-sharpening, therefore cobalt is a kind of metallic bond that diamond tool field is most widely used, but the diamond on cobalt-based diamond grinding head holds by mechanical system, cause that diamond particles can not effectively cut completely in exposure, but also its severe attrition can be made because of the effect of pulling capacity so that diamond particles obscission is serious.In metallic bond, add a small amount of tungsten powder sometimes, this is because tungsten is except producing solid molten strengthening with other metals, or carbide, can react with diamond and produce enhanced primary treatment power, compared with simply mechanically being wrapped up by diamond with general metallic bond and being fitted together to, the generation of enhanced primary treatment power is conducive to improving the power that plates to diamond, strengthening hold, it is therefore contemplated that tungstenio binder diamond bistrique will have the performance of excellence.But the fusing point of tungsten is up to 3940 DEG C, it is sintered, as metallic bond, the ability that required temperature is born considerably beyond diamond using tungsten, it is easily caused the graphitization of diamond particles, what therefore all adopt at present mostly is the relatively low tungsten carbide-base bonding agent of sintering temperature, and simple tungsten based anchoring agent have not been reported.But tungsten carbide-base bonding agent wolfram element on the one hand itself has formed carbide, and its effect producing enhanced primary treatment power with diamond is weakened；On the other hand the sintering temperature needed for tungsten carbide-base bonding agent is still higher, be only suitable for the good diamond of heat resistance with the use of, relatively costly, range of application is narrow.Therefore, if the problem that tungsten based anchoring agent sintering temperature is high can be solved, it will the manufacturing technology for diamond grinding head opens the gate that a fan is new.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, it is provided that a kind of rare earth modified tungstenio binder diamond bistrique, its manufacture method and rare earth modified tungstenio bonding agent.
One of the technical solution adopted for the present invention to solve the technical problems is:
A kind of rare earth modified tungstenio binder diamond bistrique manufacture method, including:
1) diamond dust and rare earth modified tungstenio bonding agent being sufficiently mixed, this rare earth modified tungstenio bonding agent comprises following components by mass fraction: 40～75 parts of tungsten, 2～6 parts of nickel, ferrum 2～5 parts, 8～30 parts of stannum, copper 7～20 parts, 0.4～1 part of manganese, 0.1～1 part of rare earth element.
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 900～960 DEG C, sintering pressure 90～200KN, sintering time 25～35 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 840～900 DEG C, sintering pressure 80～120MPa, sintering time 5～10 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and diamond grinding head crude product is repaired, obtain diamond grinding head finished product.
In one embodiment: described diamond dust is artificial monocrystalline diamond powder, and its diamond concentration is 75%～125%, and granularity is W40～W5.
In one embodiment: described rare earth element is at least one in the compound of lanthanum or lanthanum.
In one embodiment: the compound of described lanthanum is at least one in lanthana, lanthanum sulfate, Lanthanum (III) nitrate, lanthanum chloride.
The two of the technical solution adopted for the present invention to solve the technical problems are:
A kind of rare earth modified tungstenio bonding agent, this rare earth modified tungstenio bonding agent comprises following components by mass fraction: 40～75 parts of tungsten, 2～6 parts of nickel, ferrum 2～5 parts, 8～30 parts of stannum, copper 7～20 parts, 0.4～1 part of manganese, 0.1～1 part of rare earth element.
The three of the technical solution adopted for the present invention to solve the technical problems are:
A kind of rare earth modified tungstenio binder diamond bistrique manufactured according to rare earth modified tungstenio binder diamond bistrique manufacture method.
Diamond concentration of the present invention is industry slang, refers to the quality of diamond in unit volume metallic bond, with 4.4 carats/centimetre3For diamond concentration 100%.
Heretofore described artificial single crystal's diamond dust is product sold in the market.
Heretofore described tungsten, nickel, ferrum, stannum, copper, manganese are elemental metals powder, are product sold in the market.
Heretofore described lanthanum, lanthana, lanthanum sulfate, Lanthanum (III) nitrate, lanthanum chloride are product sold in the market.
The technical program is compared with background technology, and it has the advantage that
1. rare earth modified tungstenio bonding agent provided by the present invention, each component complements each other, sintering temperature is reduced to, from nearly 4,000 degrees Celsius, the scope that diamond can bear, solve tungstenio bonding agent all the time and be difficult to the defect of practical application because sintering temperature is high, it is successfully realized the manufacture of tungstenio binder diamond bistrique, and utilize tungsten and diamond to react the enhanced primary treatment power produced, improve diamond particles hold on diamond grinding head, the diamond grinding head hardness obtained is high, wear-resistant, the new situation has been started in the manufacture for high-performance diamond bistrique.
2. the present invention adds rare earth element in tungstenio bonding agent, there is the effect controlling melts combine grain growth, and have employed the compound of rare earth element in the preferred embodiment, grain size controllability is better, the metallic bond crystal grain obtained will not be excessive or too small, particle diameter is more stable, enhance hardness and the toughness of diamond grinding head, also improve anti-wear performance and impact resistance, effect is better than rare earth element simple substance, it is further provided the new approaches of high-performance diamond bistrique manufacture method.
Detailed description of the invention
Illustrate present disclosure by the examples below:
Embodiment 1
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 75%, nickel 5%, ferrum 4%, stannum 8%, copper 7%, manganese 0.5%, lanthana 0.5%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W40 is sufficiently mixed by diamond concentration 100% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 950 DEG C, sintering pressure 100KN, sintering time 30 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 850 DEG C, sintering pressure 90MPa, sintering time 7 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 95%, and hardness is HRC (Rockwell hardness) 64.9.
Embodiment 2
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 70%, nickel 5%, ferrum 4%, stannum 11%, copper 9%, manganese 0.5%, lanthana 0.5%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W40 is sufficiently mixed by diamond concentration 100% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 950 DEG C, sintering pressure 100KN, sintering time 30 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 850 DEG C, sintering pressure 90MPa, sintering time 7 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 95%, and hardness is HRC64.5.
Embodiment 3
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 60%, nickel 5%, ferrum 4%, stannum 17%, copper 13%, manganese 0.5%, lanthana 0.5%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W40 is sufficiently mixed by diamond concentration 100% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 950 DEG C, sintering pressure 100KN, sintering time 30 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 850 DEG C, sintering pressure 90MPa, sintering time 7 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 96%, and hardness is HRC65.1.
Embodiment 4
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 55%, nickel 5%, ferrum 4%, stannum 20%, copper 15%, manganese 0.5%, lanthana 0.5%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W40 is sufficiently mixed by diamond concentration 100% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 950 DEG C, sintering pressure 100KN, sintering time 30 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 850 DEG C, sintering pressure 90MPa, sintering time 7 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 97%, and hardness is HRC65.2.
Embodiment 5
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 40%, nickel 5%, ferrum 4%, stannum 30%, copper 20%, manganese 0.5%, lanthana 0.5%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W40 is sufficiently mixed by diamond concentration 100% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 950 DEG C, sintering pressure 100KN, sintering time 30 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 850 DEG C, sintering pressure 90MPa, sintering time 7 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 97%, and hardness is HRC64.2.
Embodiment 6
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 65%, nickel 2%, ferrum 5%, stannum 15%, copper 10%, manganese 0.7%, lanthanum chloride 0.1%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W5 is sufficiently mixed by diamond concentration 75% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 930 DEG C, sintering pressure 150KN, sintering time 25 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 900 DEG C, sintering pressure 120MPa, sintering time 5 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 95%, and hardness is HRC64.3.
Embodiment 7
1) rare earth modified tungstenio bonding agent is prepared: in this rare earth modified tungstenio bonding agent gross mass, comprising following components: tungsten 50%, nickel 4%, ferrum 2%, stannum 25%, copper 18%, manganese 1%, lanthanum sulfate 1%, said components utilizes high-energy ball milling grind uniformly and get final product after being sufficiently mixed；Artificial single crystal's diamond dust that granularity is W20 is sufficiently mixed by diamond concentration 125% and above-mentioned rare earth modified tungstenio bonding agent；
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 900 DEG C, sintering pressure 200KN, sintering time 35 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 870 DEG C, sintering pressure 100MPa, sintering time 10 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and with diamond roller and oilstone, diamond grinding head crude product is carried out contouring, obtain diamond grinding head finished product.Adopting water weight method to detect the consistency of this diamond grinding head, adopt Rockwell apparatus to detect the hardness of this diamond grinding head, after tested, its consistency is 95%, and hardness is HRC64.6.
In above example, being up to criterion with diamond grinding head consistency and hardness, embodiment 4 effect is better.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process according to this, and the equivalence namely made according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (6)
1. a rare earth modified tungstenio binder diamond bistrique manufacture method, it is characterised in that: including:
1) diamond dust and rare earth modified tungstenio bonding agent being sufficiently mixed and obtain mixture, this rare earth modified tungstenio bonding agent comprises following components by mass fraction: 40～75 parts of tungsten, 2～6 parts of nickel, ferrum 2～5 parts, 8～30 parts of stannum, copper 7～20 parts, 0.4～1 part of manganese, 0.1～1 part of rare earth element.
2) difference according to required diamond grinding head geometric shape, utilizes corresponding mould that said mixture is carried out cold moudling；
3), after cold moudling, vacuum heating-press sintering, sintering temperature 900～960 DEG C, sintering pressure 90～200KN, sintering time 25～35 minutes are carried out；
4), after vacuum heating-press sintering, carry out HIP sintering, sintering temperature 840～900 DEG C, sintering pressure 80～120MPa, sintering time 5～10 minutes, obtain diamond grinding head crude product；
5) diamond grinding head crude product is welded in metallic rod, and diamond grinding head crude product is repaired, obtain diamond grinding head finished product.
2. one according to claim 1 rare earth modified tungstenio binder diamond bistrique manufacture method, it is characterised in that: described diamond dust is artificial monocrystalline diamond powder, and its diamond concentration is 75%～125%, and granularity is W40～W5.
3. one according to claim 1 rare earth modified tungstenio binder diamond bistrique manufacture method, it is characterised in that: at least one in the compound that addition form is lanthanum or lanthanum of described rare earth element.
4. one according to claim 3 rare earth modified tungstenio binder diamond bistrique manufacture method, it is characterised in that: the compound of described lanthanum is at least one in lanthana, lanthanum sulfate, Lanthanum (III) nitrate, lanthanum chloride.
5. a rare earth modified tungstenio bonding agent, it is characterised in that: this rare earth modified tungstenio bonding agent comprises following components by mass fraction: 40～75 parts of tungsten, 2～6 parts of nickel, ferrum 2～5 parts, 8～30 parts of stannum, copper 7～20 parts, 0.4～1 part of manganese, 0.1～1 part of rare earth element.
6. the rare earth modified tungstenio binder diamond bistrique that an a kind of rare earth modified tungstenio binder diamond bistrique manufacture method according to claim 1 manufactures.
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