CN109022872A - A kind of hard alloy cutting tool material and preparation method thereof - Google Patents
A kind of hard alloy cutting tool material and preparation method thereof Download PDFInfo
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- CN109022872A CN109022872A CN201811106464.5A CN201811106464A CN109022872A CN 109022872 A CN109022872 A CN 109022872A CN 201811106464 A CN201811106464 A CN 201811106464A CN 109022872 A CN109022872 A CN 109022872A
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- 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
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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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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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
- C22C29/06—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 based on carbides, but not containing other metal compounds
- C22C29/067—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 based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- 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
- C22C29/06—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 based on carbides, but not containing other metal compounds
- C22C29/08—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 based on carbides, but not containing other metal compounds based on tungsten carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
Abstract
The invention discloses a kind of hard alloy cutting tool materials and preparation method thereof.Its material component includes that zinc melts bar and spherical cobalt powder, the zinc melts bar and contains grain growth inhibitor, there is sharp cutting edge again with the present invention production existing preferable toughness of hard alloy cutting tool, ensure good cutting effect and superpower service life under more severe production environment, zinc melts bar material, not only ensure that the stability of material quality, but also the manufacturing cost of enterprise can be effectively reduced, by the long-time service of client, it is fully able to replace the product of primary material manufacture.
Description
Technical field
The present invention relates to hard alloy cutting tool Material Fields, are specifically related to a kind of hard alloy cutting tool use
Material and preparation method thereof.
Background technique
With the fast development of industrial technology, sintered-carbide tool material is quickly deep into industrial every aspect,
Gradually instead of original high speed steel material, and show unrivaled excellent properties.In order to cater to paper conversion industry cutter,
Traditional cutting tool material switchs to cemented carbide material by high speed steel material.Hard alloy main component is tungsten carbide (WC),
Bonding phase is generally done using cobalt, is produced using powder metallurgy process, there is very high wearability and intensity.Its high-wearing feature makes
Its service life improves 10~30 times, greatly improves productivity effect, reduces waste, reduces production cost, obtains
The approval of industry.But have some critical defects, and it is made of the thin raw material of particle, although wearability is good, poor toughness；With thick
Raw material do, although intensity, toughness can be with, the edge of a knife is blunt, cutting resistance is big, is also easy to produce high temperature, influences cutting quality and cutter
Service life.
Tungsten-cobalt is most popular one kind in hard alloy, and the hard alloy being made of tungsten carbide and metallic cobalt leads to
Normal bending strength and fracture toughness are improved with the increase of cobalt content, and hardness declines.Low for machine tool accuracy used in client,
It beats big problem, the raw material that existing alloy field prepares cemented carbide material all uses the partially thick high cobalt alloy (content of cobalt
It is 10%~20%), compression moulding is sintered using rubber method, and the performance of manufactured cemented carbide material is usually density D=
14 or so, cobalt magnetic com=11 or so, hardness HRA=86 or so, magnetic force He=10 or so, intensity TRS=2800 or so.Due to
The thicker edge of a knife of cemented carbide material feed particles is more blunt, cutting resistance is bigger, the edge of a knife easily generates heat, and influences cutting quality and cutter longevity
Life；Cobalt content more high rigidity is lower, wearability is poorer.Therefore the not sharp, hardness by the hard alloy edge of a knife of high cobalt alloy preparation
It is low, service life is short, high so as to cause the frequency for repairing knife, tool changing in the course of work, influence working efficiency, cause a large amount of manpower objects
The serious waste of power.
Chinese patent application (application number 201310270044.1, Publication No. CN103305741A) discloses a kind of hard
Alloy, hard alloy knife bar and its manufacturing method.The cemented carbide material selection mass parts of WC80~90,10~20 mass parts of cobalt,
0.15~0.5 mass parts of tantalum carbide, 0.2~0.4 mass parts of chromium carbide, 0.1~0.3 mass parts of vanadium carbide, forming agent select oil
The mixture of acid, naphthane and ethyl cellulose.The granularity of WC is 1.0~1.2 μm.But this method due to using 1.0um~
The fine grained tungsten carbide of 1.2um, the edge of a knife is easy to burst apart the hard alloy being prepared when in use.Also technical staff attempts to use
Coarse granule and fine grained tungsten carbide are mixed and are matched, but tungsten carbide is easily caused to build up, and crystal grain grows up, presss from both sides thick defect, therefore existing
It is main alloy raw material that the cemented carbide material of cutting tool in technology, which is all the tungsten carbide of the 4.0um~5.0um selected, though
The problem of right chipping, is effectively improved, but the edge of a knife is not sharp, cutting resistance is big, hardness is low, not wear-resisting.
Chinese patent application (application number 201310485442.5, publication number CN103540823A) discloses a kind of hard conjunction
Gold.The hard alloy includes the hard alloy substrate of metal carbide powders and metal adhesive composition, further includes coating, wherein
Metal carbide powders select each component mass percent be tungsten carbide 40~50%, chromium carbide 3~8%, titanium carbide 5~9%,
Vanadium carbide 5~10%, niobium carbide 2~5%, tantalum carbide 6~11%, metal adhesive select cobalt, mass percent be 12~
18%, coating selects diamond CVO coating.It is preferred that wc grain size be 0.1~0.4 μm, other metal carbides granularities be 0.1~
0.8um.But the disadvantages of this method is that production cost is very high: first is that, niobium carbide, tantalum carbide are all that price is very high in raw material
The value of expensive rare metal, 1 kilogram of tantalum carbide is equivalent to the value of 10 kilograms of tungsten carbides；Second is that coating technology requires height, sets
Standby expensive, a coating apparatus cost is up to ten million, is not widely deployed for general enterprises.
Summary of the invention
The technical problems to be solved by the present invention are: the edge of a knife of hard alloy carving knife is blunt in the prior art, wears no resistance,
Or the edge of a knife is sharp but poor toughness, seriously affects cutting quality and cutter life, the problem of of resulting in waste of resources.
In order to solve the above-mentioned technical problem, inventor's process is constantly brought forth new ideas and improvement obtains technical solution of the present invention, this
A kind of hard alloy cutting tool material of disclosure of the invention, component include that zinc melts bar and spherical cobalt powder, the zinc melt stick
Material contains grain growth inhibitor, and it is 95%~98% that the zinc, which melts bar quality accounting, and the spherical cobalt powder quality accounting is
2%~5%.
Further, the zinc melt bar be include tungsten carbide, cobalt sum grain growth inhibitor alloy, wherein being carbonized
Tungsten quality accounting is 89.0%~90.3%, cobalt quality accounting is 9.5%~10.5%, grain growth inhibitor quality accounting is
0.2%~0.5%.
Further, the grain growth inhibitor is chromium carbide.
Further, the grain growth inhibitor further includes tantalum carbide and/or vanadium carbide.
Further, it is 0.8~1.0um that the zinc, which melts the granularity of bar,；The granularity of the spherical cobalt powder be 1.0~
2.0um。
Further, the granularity of the spherical cobalt powder is 1.0um.
The invention also discloses a kind of preparation methods of hard alloy cutting tool material, comprising the following steps:
A. mixing, wet-milling
A1. grinding baseball, zinc are melted into bar and spherical cobalt powder pours into wet milk respectively and mixes, the grinding baseball and zinc are molten
The mass ratio of bar and spherical cobalt powder mixture is 4~5:1；
A2. the ethyl alcohol of concentration >=98% is added, paraffin or rubber are added simultaneously as abrasive media addition wet milk；
A3. wet-milling obtains wet-milling slurry, and the time is 36~60h；
B. it is tentatively sieved, is dry, secondary sieving
B1. preliminary sieving: primary dcreening operation slurry is obtained using 400 mesh stainless steel mesh sieving wet-milling slurry；
B2. it dries: primary dcreening operation slurry is dried to obtain by dried feed by vacuum drier；
B3. it is 1.8%~2.4% paraffin rubber as forming agent that mass ratio is added in dried feed；
B4. material grain is obtained using the mixture that 50 mesh~70 mesh stainless steel mesh wipe sieve b3；
C. it suppresses: will expect that grain is pressed into die mould material in b4；
D. it being sintered: being sintered step c medium-pressure type material in sintering furnace, temperature is 1410~1460 DEG C, heat preservation 50~
90min；
E. it cools down: the obtained sintering feed of step d being cooled to room temperature and is come out of the stove to obtain the final product.
Further, mass ratio is 4.21:1 in step a1；Paraffin is 56# paraffin or 58# paraffin in a2.
Further, drying steps include: to vacuumize, stir, drying in the step b2:
It first vacuumizes, then send hot water heating, hot water temperature controls at 90 DEG C, after heating 4h；
Double Z stirrings are started again, mixing speed is controlled in≤8r/min,
4h is reheated, after reaching 60~80min of maximum vacuum, is cooled to 40~50 DEG C；
Hard alloy forming agent, the hard alloy forming agent and step a1 is added in the drying process or after the completion of dry
The mass ratio that middle zinc melts bar raw material is 1.8~2.4:100.
Further, step e is rapid cooling vacuum annealing, in vacuum annealing furnace, by the obtained sintering feed of step d
Temperature is adjusted to 1300~1350 DEG C, and under vacuum conditions, sintering feed goes to cooling chamber from vacuum annealing furnace, in 30~40min
Prompt drop have to go to the toilet to room temperature.
Compared with prior art, the present invention can obtain following technical effect:
(1) there is sharp cutting edge again with the present invention production existing preferable toughness of hard alloy cutting tool, disliked comparing
Ensure good cutting effect and superpower service life under bad production environment, and with primary material tungsten carbide and cobalt powder because
It for rising steadily for cost, also rises steadily to the increased manufacturing cost of enterprise, melts bar material using zinc, both ensure that material product
The stability of matter, and the manufacturing cost of enterprise can be effectively reduced, by the long-time service of client, it is fully able to replace primary material system
The product made.
(2) zinc melts the fine grained that the granularity of bar is 0.8~1.0um in raw material of the invention, both can ensure that edge of a knife cutting edge of a knife or a sword
Sharp cutting resistance is small, and effectively changes tearing curve when alloy chipping, enhances toughness, while avoiding machine well
The edge of a knife is easy the problem of bursting apart when bed bounce, ensures that in excellent cutting effect compared with adverse circumstances bottom tool and superpower
Service life；Stock-removing efficiency and cutting quality are greatly improved, reduces the serious waste of material, enhances market competition
Power；
(3) a kind of hard alloy cutting tool material of the invention, granularity are the tungsten carbide of 0.8~1.0um through testing
The effect for verifying the material of hard alloy cutting tool obtained is best, and performance indexes is good；
(4) a kind of hard alloy cutting tool material of the invention, granularity difference preferably 0.8~1.0um of tungsten carbide,
The effect of the material of obtained hard alloy cutting tool is best, and performance indexes is good；
(5) a kind of hard alloy cutting tool material of the invention, selecting the granularity of spherical cobalt powder is 1.0~2.0um,
Because cobalt powder more thin dispersibility in the alloy is better, and since raw material main component is the carbonization that granularity is 0.8~1.0um
Tungsten is fine grained, and cobalt powder is thinner, the two contact area is also bigger, alloy ductility is better, to ensure that the tough of hard alloy
Degree, while the cost for making cobalt powder is lower, the effect that the granularity of spherical cobalt powder is 1.0um is best；
(6) a kind of hard alloy cutting tool material of the invention, fine grained zinc melt bar and include a certain proportion of carbon
Change chromium, tantalum carbide, talk vanadium mainly to play a part of that tungsten carbide crystal grain is inhibited to grow up, particle is thinner, and inhibiting effect is better, makes simultaneously
Make the cost of cobalt powder in contrast than convenient；
(7) a kind of hard alloy cutting tool of the invention is 1.0um with the granularity that material includes grain growth inhibitor,
The effect for inhibiting tungsten carbide crystal grain to grow up is best, overcomes tungsten carbide accumulation, crystal grain grows up, presss from both sides thick defect；
(8) in a kind of preparation method of hard alloy cutting tool material of the invention, ethyl alcohol and paraffin in step a2
Addition: ethyl alcohol is wet-milling grinding agent, in order to which wet-milling each component can be mixed more uniformly；Paraffin is binder, in order to suppress
Cheng Shunli molding, will not rupture；Mass ratio is 4.21:1 in step a2；Paraffin is 56# paraffin in a2 or 58# paraffin is most preferably
Scheme, fusing point is higher, and purity is more preferable；
(9) in a kind of preparation method of hard alloy cutting tool material of the invention, in step b3 in dried feed
The paraffin rubber that mass ratio is 1.8%~2.4% is added as forming agent；
(10) in a kind of preparation method of hard alloy cutting tool material of the invention, drying steps packet in step b2
Include: the benefit vacuumize, stir, drying is: ethyl alcohol grinding agent can be got rid of, facilitate powder pressing；
(11) in a kind of preparation method of hard alloy cutting tool material of the invention, step e is that rapid cooling is true
The benefit of sky annealing is: promoting the fracture toughness of product and increases wearability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, those of ordinary skill in the art are come
It says, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is flow diagram of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
With reference to the accompanying drawing and specific embodiment is further described application principle of the invention.
Embodiment 1
A kind of hard alloy cutting tool material, component include that zinc melts bar and spherical cobalt powder, and zinc melts bar and contains crystalline substance
The big inhibitor of grain length, it is 95%~98% that zinc, which melts bar quality accounting, and spherical cobalt powder quality accounting is 2%~5%.
Zinc melt bar be include tungsten carbide, cobalt sum grain growth inhibitor alloy, wherein tungsten carbide quality accounting be
89.0%~90.3%, cobalt quality accounting be 9.5%~10.5%, grain growth inhibitor quality accounting be 0.2%~
0.5%.
Grain growth inhibitor is chromium carbide, and another grain growth inhibitor further includes tantalum carbide and/or vanadium carbide；Zinc
The granularity of molten bar is 0.8~1.0um；The granularity of spherical cobalt powder is 1.0~2.0um；The optimal granularity of spherical cobalt powder is 1.0um
The present embodiment includes the preparation method of this hard alloy cutting tool material, comprising the following steps:
A. mixing, wet-milling
A1. grinding baseball, zinc are melted into bar and spherical cobalt powder pours into wet milk respectively and mixes, grinding baseball and zinc melt bar
Mass ratio with spherical cobalt powder mixture is 4~5:1；
A2. the ethyl alcohol of concentration >=98% is added, paraffin or rubber are added simultaneously as abrasive media addition wet milk；
A3. wet-milling obtains wet-milling slurry, and the time is 36~60h；
B. it is tentatively sieved, is dry, secondary sieving
B1. preliminary sieving: primary dcreening operation slurry is obtained using 400 mesh stainless steel mesh sieving wet-milling slurry；
B2. it dries: primary dcreening operation slurry is dried to obtain by dried feed by vacuum drier；
B3. it is 1.8%~2.4% paraffin rubber as forming agent that mass ratio is added in dried feed；
B4. material grain is obtained using the mixture that 50 mesh~70 mesh stainless steel mesh wipe sieve b3；
C. it suppresses: will expect that grain is pressed into die mould material in b4；
D. it being sintered: being sintered step c medium-pressure type material in sintering furnace, temperature is 1410~1460 DEG C, heat preservation 50~
90min；
E. it cools down: the obtained sintering feed of step d being cooled to room temperature and is come out of the stove to obtain the final product.
Wherein: it is optimal selection that mass ratio, which is 4.21:1, in step a1；Paraffin is 56# paraffin or 58# paraffin in a2；Step
Drying steps include: to vacuumize, stir, drying in b2:
It first vacuumizes, then send hot water heating, hot water temperature controls at 90 DEG C, after heating 4h；
Double Z stirrings are started again, mixing speed is controlled in≤8r/min,
4h is reheated, after reaching 60~80min of maximum vacuum, is cooled to 40~50 DEG C；
Hard alloy forming agent, hard alloy forming agent and zinc in step a1 are added in the drying process or after the completion of dry
The mass ratio of molten bar raw material is 1.8~2.4:100；Step e can be room temperature cooling annealing, optimal thing rapid cooling vacuum
Annealing, in vacuum annealing furnace, the temperature of the obtained sintering feed of step d is adjusted to 1300~1350 DEG C, under vacuum conditions,
Sintering feed goes to cooling chamber from vacuum annealing furnace, has to go to the toilet prompt drop to room temperature in 30~40min.
Embodiment 2
The fine grained zinc of a kind of material of hard alloy cutting tool of the present embodiment, group 0.8~1.0um of subpackage is molten
Bar material and spherical cobalt powder, it is 0.8~1.0um that wherein fine grained zinc, which melts bar material granularity, and the partial size of spherical cobalt powder is 1.0um；
It is 95:5 that the fine grained zinc that granularity is 0.8~1.0um, which melts bar material and the mass ratio of spherical cobalt powder,.
As shown in Figure 1, a kind of preparation method of the material of hard alloy cutting tool of the present embodiment, including walk as follows
It is rapid:
(1) selecting format diameter is respectively 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, height mutually should be 17cm,
16.7cm, 16.3cm, 15.6cm, 14.4cm, mass ratio mutually should be 3%, 33%, 32.5%, 16%, 15.5% grinding rod
Ball 1350Kg, the 300L for being added to the manufacture of Xiangtan, Hunan Province promotion powder apparatus Co., Ltd can incline wet milk.
(2) the fine grained zinc that granularity is 0.8~1.0um is selected to melt bar material, the spherical cobalt powder of 1.0um, according to mass ratio
For 95:5 ratio be made into 270Kg raw material put into step (1) described in wet milk mixed.
(3) wet milk described in step (2), the body of ethyl alcohol are directly added into using the ethyl alcohol of concentration >=98% as abrasive media
Product is 66L.
(4) wet-milling handles resulting mixture through above-mentioned steps.
(5) 400 mesh stainless steel mesh of selection sieving wet-milling slurry.
(6) slurry that will be handled through step (5) is packed into the bis- Z of 300L of Xiangtan, Hunan Province promotion powder apparatus Co., Ltd manufacture
Vacuum drier, the drying machine use double Z mixing, vacuum, ethyl alcohol recycling, hot water drying system；It first vacuumizes, then send hot water
Heating, hot water temperature controls at 90 DEG C, after heating 4h, starts double Z stirrings, and mixing speed control reheats 4h in≤8r/min,
After reaching 60~80min of maximum vacuum, it is cooled to 40~50 DEG C.Rubber 5.4Kg is added after the completion of dry as forming agent.
(7) it after the completion of dry, is sieved with 50 mesh network rubs, obtains meeting us and suppress the material grain of disc cutter requirement.
(8) by material grain compression moulding described in step (7), it is pressed into 20*6.5*5.25 standard batten, is burnt in conventional vacuum
Knot all-in-one oven is sintered to 1460 DEG C, keeps the temperature 50min, and vacuum annealing process is simultaneously cooled to room temperature cemented carbide material to obtain the final product of coming out of the stove.
After coming out of the stove by sample test the result is that: density: D=14.25, cobalt magnetic: com=11.5, hardness: HRA=
90.5, magnetic force: He=17.5, intensity: TRS=2800.
Embodiment 3
A kind of material of hard alloy cutting tool of the present embodiment, component include the fine grained zinc of 0.8~1.0um
Molten bar material and spherical cobalt powder, it is 0.8~1.0um that wherein fine grained zinc, which melts bar material granularity, and the partial size of spherical cobalt powder is
1.0um, the partial size of chromium carbide are 1.0um；The fine grained zinc that granularity is 0.8~1.0um melts bar material and spherical cobalt powder mass ratio
For 98:2.
A kind of preparation method of the material of hard alloy cutting tool of the present embodiment, includes the following steps:
(1) selecting format diameter is 5.5cm, is highly the grinding baseball 1200Kg of 14.4cm, is added to Xiangtan, Hunan Province height
The 300L for rising the manufacture of powder apparatus Co., Ltd can incline wet milk.
(2) select the fine grained zinc that granularity is 0.8~1.0um melt spherical cobalt powder that bar material and granularity are 1.0um according to
The raw material that the ratio that mass ratio is 98:2 is made into 270Kg puts into wet milk described in step (1) and is mixed.
(3) wet milk described in step (2), the body of ethyl alcohol are directly added into using the ethyl alcohol of concentration >=98% as abrasive media
Product is 66L.
(4) wet-milling handles resulting mixture through above-mentioned steps.
(5) 400 mesh stainless steel mesh of selection sieving wet-milling slurry.
(6) slurry that will be handled through step (5) is packed into the bis- Z vacuum of 300L of Xiangtan, Hunan Province promotion powder apparatus Co., Ltd
Drying machine, the drying machine use double Z mixing, vacuum, ethyl alcohol recycling, hot water drying system；It first vacuumizes, then hot water is sent to add
Heat, hot water temperature controls at 90 DEG C, after heating 4h, starts double Z stirrings, mixing speed control reheats 4h, reach in≤8r/min
To after 60~80min of maximum vacuum, it is cooled to 40~50 DEG C.Rubber 6Kg is added after the completion of dry as forming agent.
(7) it after the completion of dry, is sieved with 50 mesh network rubs, obtains meeting us and suppress the material grain of disc cutter requirement.
(8) by material grain compression moulding described in step (7), it is pressed into 20*6.5*5.25 standard batten, is burnt in conventional vacuum
Knot all-in-one oven is sintered to 1460 DEG C, keeps the temperature 50min, up to cemented carbide material after being cooled to room temperature.
After coming out of the stove by sample test the result is that: density: D=14.15, cobalt magnetic: com=10.5, hardness: HRA=
91, magnetic force: He=18.5, intensity: TRS=3000.
Embodiment 4
The fine grained zinc of a kind of material of hard alloy cutting tool of the present embodiment, the pure 0.8~1.0um of component is molten
Bar material, it is 0.8~1.0um, cobalt content 10% that wherein fine grained zinc, which melts bar material granularity,；Granularity is the thin of 0.8~1.0um
It is 100% that particulate zinc, which melts bar material quality,.
As shown in Figure 1, a kind of preparation method of the material of hard alloy cutting tool of the present embodiment, including walk as follows
It is rapid:
(1) selecting format diameter is 5.5cm, is highly the grinding baseball 1200Kg of 14.4cm, is added to Xiangtan, Hunan Province height
The 300L for rising the manufacture of powder apparatus Co., Ltd can incline wet milk.
(2) selecting the fine grained zinc that granularity is 0.8~1.0um to melt bar material and 1.0 spherical cobalt powders according to mass ratio is 98:
2 ratio is made into wet milk described in raw material investment step (1) of 270Kg and is mixed.
(3) wet milk described in step (2), the body of ethyl alcohol are directly added into using the ethyl alcohol of concentration >=98% as abrasive media
Product is 66L.
(4) wet-milling handles resulting mixture through above-mentioned steps.
(5) 400 mesh stainless steel mesh of selection sieving wet-milling slurry.
(6) slurry that will be handled through step (5) is packed into the bis- Z vacuum of 300L of Xiangtan, Hunan Province promotion powder apparatus Co., Ltd
Drying machine, the drying machine use double Z mixing, vacuum, ethyl alcohol recycling, hot water drying system；It first vacuumizes, then hot water is sent to add
Heat, hot water temperature controls at 95 DEG C, after heating 4h, starts double Z stirrings, mixing speed control reheats 6h, reach in≤8r/min
To after 60~80min of maximum vacuum, it is cooled to 40~50 DEG C.Rubber 6.6Kg is added after the completion of dry as forming agent.
(7) it after the completion of dry, is sieved with 70 mesh network rubs, obtains meeting us and suppress the material grain of disc cutter requirement.
(8) by material grain compression moulding described in step (7), it is pressed into 20*6.5*5.25 standard batten, is burnt in conventional vacuum
Knot all-in-one oven is sintered to 1460 DEG C, keeps the temperature 70min, is cooled to room temperature and comes out of the stove up to cemented carbide material.
After coming out of the stove by sample test the result is that: density: D=14.35, cobalt magnetic: com=9.8, hardness: HRA=
91.8, magnetic force: He=20.6, intensity: TRS=2600.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of hard alloy cutting tool material, it is characterised in that: its component includes that zinc melts bar and spherical cobalt powder, described
Zinc melts bar and contains grain growth inhibitor, and it is 95%~98% that the zinc, which melts bar quality accounting, the spherical cobalt powder quality
Accounting is 2%~5%.
2. a kind of hard alloy cutting tool material according to claim 1, it is characterised in that: the zinc melts bar and is
Alloy including tungsten carbide, the grain growth inhibitor of cobalt sum, wherein tungsten carbide quality accounting is 89.0%~90.3%, cobalt matter
Amount accounting is 9.5%~10.5%, grain growth inhibitor quality accounting is 0.2%~0.5%.
3. a kind of hard alloy cutting tool material according to claim 2, it is characterised in that: the crystal grain is grown up suppression
Preparation is chromium carbide.
4. a kind of hard alloy cutting tool material according to claim 2, it is characterised in that: the crystal grain is grown up suppression
Preparation further includes tantalum carbide and/or vanadium carbide.
5. a kind of hard alloy cutting tool material according to claim 1, it is characterised in that: the zinc melts bar
Granularity is 0.8~1.0um；The granularity of the spherical cobalt powder is 1.0~2.0um.
6. a kind of hard alloy cutting tool material according to claim 1, it is characterised in that: the spherical cobalt powder
Granularity is 1.0um.
7. the preparation method of described in any item a kind of hard alloy cutting tool materials according to claim 1~6, feature
It is, comprising the following steps:
A. mixing, wet-milling
A1. grinding baseball, zinc are melted into bar and spherical cobalt powder pours into wet milk respectively and mixes, the grinding baseball and zinc melt bar
Mass ratio with spherical cobalt powder mixture is 4~5:1；
A2. the ethyl alcohol of concentration >=98% is added, paraffin or rubber are added simultaneously as abrasive media addition wet milk；
A3. wet-milling obtains wet-milling slurry, and the time is 36~60h；
B. it is tentatively sieved, is dry, secondary sieving
B1. preliminary sieving: primary dcreening operation slurry is obtained using 400 mesh stainless steel mesh sieving wet-milling slurry；
B2. it dries: primary dcreening operation slurry is dried to obtain by dried feed by vacuum drier；
B3. it is 1.8%~2.4% paraffin rubber as forming agent that mass ratio is added in dried feed；
B4. material grain is obtained using the mixture that 50 mesh~70 mesh stainless steel mesh wipe sieve b3；
C. it suppresses: will expect that grain is pressed into die mould material in b4；
D. it is sintered: being sintered step c medium-pressure type material in sintering furnace, temperature is 1410~1460 DEG C, keeps the temperature 50~90min；
E. it cools down: the obtained sintering feed of step d being cooled to room temperature and is come out of the stove to obtain the final product.
8. a kind of preparation method of hard alloy cutting tool material according to claim 7, it is characterised in that: step
Mass ratio is 4.21:1 in a1；Paraffin is 56# paraffin or 58# paraffin in a2.
9. a kind of preparation method of hard alloy cutting tool material according to claim 7, it is characterised in that: described
Drying steps include: to vacuumize, stir, drying in step b2:
It first vacuumizes, then send hot water heating, hot water temperature controls at 90 DEG C, after heating 4h；
Double Z stirrings are started again, mixing speed is controlled in≤8r/min,
4h is reheated, after reaching 60~80min of maximum vacuum, is cooled to 40~50 DEG C；
Hard alloy forming agent, the hard alloy forming agent and zinc in step a1 are added in the drying process or after the completion of dry
The mass ratio of molten bar raw material is 1.8~2.4:100.
10. a kind of preparation method of hard alloy cutting tool material according to claim 7, it is characterised in that: step
Rapid e is rapid cooling vacuum annealing, in vacuum annealing furnace, the temperature of the obtained sintering feed of step d is adjusted to 1300~
1350 DEG C, under vacuum conditions, sintering feed goes to cooling chamber from vacuum annealing furnace, has to go to the toilet prompt drop to room temperature in 30~40min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604608A (en) * | 2018-12-26 | 2019-04-12 | 技锋精密刀具（马鞍山）有限公司 | A kind of high-performance carbide thin slice dise knife material and its manufacture craft |
| CN109702232A (en) * | 2018-12-28 | 2019-05-03 | 河源正信硬质合金有限公司 | A kind of hard alloy overlength alloy knife and preparation method thereof |
| CN111826569A (en) * | 2020-07-21 | 2020-10-27 | 广东正信硬质材料技术研发有限公司 | Wear-resistant high-hardness hard alloy drilling tool and preparation method thereof |
| CN112935241A (en) * | 2021-01-23 | 2021-06-11 | 晋城鸿刃科技有限公司 | Molding agent and molding method of hard alloy |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268552A (en) * | 2006-03-30 | 2007-10-18 | Komatsu Ltd | Wear-resistant particle and wear-resistant structural member |
| CN104399991A (en) * | 2014-12-15 | 2015-03-11 | 技锋精密刀具（马鞍山）有限公司 | Hard alloy paper slitting single tool processing technology |
| CN104439233A (en) * | 2014-12-15 | 2015-03-25 | 技锋精密刀具（马鞍山）有限公司 | Material for hard alloy cutting tool |
| CN104480337A (en) * | 2014-12-15 | 2015-04-01 | 技锋精密刀具（马鞍山）有限公司 | Preparation method of material for hard alloy slitting tool |
-
2018
- 2018-09-21 CN CN201811106464.5A patent/CN109022872A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268552A (en) * | 2006-03-30 | 2007-10-18 | Komatsu Ltd | Wear-resistant particle and wear-resistant structural member |
| CN104399991A (en) * | 2014-12-15 | 2015-03-11 | 技锋精密刀具（马鞍山）有限公司 | Hard alloy paper slitting single tool processing technology |
| CN104439233A (en) * | 2014-12-15 | 2015-03-25 | 技锋精密刀具（马鞍山）有限公司 | Material for hard alloy cutting tool |
| CN104480337A (en) * | 2014-12-15 | 2015-04-01 | 技锋精密刀具（马鞍山）有限公司 | Preparation method of material for hard alloy slitting tool |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604608A (en) * | 2018-12-26 | 2019-04-12 | 技锋精密刀具（马鞍山）有限公司 | A kind of high-performance carbide thin slice dise knife material and its manufacture craft |
| CN109702232A (en) * | 2018-12-28 | 2019-05-03 | 河源正信硬质合金有限公司 | A kind of hard alloy overlength alloy knife and preparation method thereof |
| CN111826569A (en) * | 2020-07-21 | 2020-10-27 | 广东正信硬质材料技术研发有限公司 | Wear-resistant high-hardness hard alloy drilling tool and preparation method thereof |
| CN112935241A (en) * | 2021-01-23 | 2021-06-11 | 晋城鸿刃科技有限公司 | Molding agent and molding method of hard alloy |
| CN116103555A (en) * | 2023-01-13 | 2023-05-12 | 福建中成新材料科技有限公司 | Regenerated hard alloy extruded round bar material and preparation process thereof |
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