CN108342633A - Carcass composition, the diamond block and preparation method thereof using the composition - Google Patents
Carcass composition, the diamond block and preparation method thereof using the composition Download PDFInfo
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- CN108342633A CN108342633A CN201711397647.2A CN201711397647A CN108342633A CN 108342633 A CN108342633 A CN 108342633A CN 201711397647 A CN201711397647 A CN 201711397647A CN 108342633 A CN108342633 A CN 108342633A
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- diamond
- powder
- carcass
- diamond block
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- 239000010432 diamond Substances 0.000 title claims abstract description 170
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 170
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 88
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 229910000743 fusible alloy Inorganic materials 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 33
- 239000003292 glue Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 23
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000005469 granulation Methods 0.000 claims description 12
- 230000003179 granulation Effects 0.000 claims description 12
- 239000013528 metallic particle Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims 2
- 238000004321 preservation Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 6
- 229910052759 nickel Inorganic materials 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000001513 hot isostatic pressing Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- -1 tungsten carbides Chemical class 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000005563 spheronization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- 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
-
- B22F1/0003—
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/006—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes with additional metal compounds being carbides
Abstract
The present invention relates to a kind of carcass compositions, include following component by weight percentage：60 80%WC powder, 5 15%Co powder, 5 12%Cu powder, 3 5%Mn powder, 2 6%Zn powder, 3 8% self-fusible alloy powder of nickel-base；A kind of diamond block, including working lining are further related to, is made of following raw material by percent by volume：Carcass composition 50 70%, diamond 30 50%；Further disclose the preparation method of above-mentioned locking nub.Nickel-based self-fluxing alloy powder and Mn powder, Zn powder combine and can well fuse between other metal powders in above-mentioned carcass composition；Diamond is to be put into carcass by round as a ball, not easily to fall off；Again successively through vacuum heating-press sintering, hip treatment；Such locking nub has superior toughness, wearability and diamond hold, and diamond uniform distribution, uniform force, can work under extremely severe probing/borehole environment.
Description
Technical field
The present invention relates to a kind of carcass composition, and using the diamond block of the composition, more particularly, to geology,
Coal and oil drilling drill bit or building materials, stone material drill diamond block；Further relate to the preparation of the diamond block
Method.
Background technology
Diamond block is the sintered body that tungsten carbide and cobalt plate coarse diamond for main carcass material, and carcass is wear-resisting
Property, impact resistance are extremely strong, and the drilling ability of coarse diamond is good, is highly suitable for the drilling of adverse circumstances difficult drilling formation.
Common diamond block is mixed equal by carcass powder (the generally cemented carbide powder of high carbide content) and diamond
It is even after hot pressed sintering form, due to diamond concentration height, it is big with carcass powder difference of specific gravity, thus it is more difficult obtain be uniformly mixed
There is crane span structure phenomenon between compacting and the easy diamond of sintering process, diamond block is caused to go out at diamond crane span structure in carcass powder
The existing weak area of hardness and strength, can be in weak area's premature failure, the problem of to cause short life during use.Moreover, because golden
The pressure and impact force that hard rock locking nub is subject in deep-well are huge, and locking nub is needed to have a high toughness, and conventional powder
The diamond block that last metallurgy obtains cannot be satisfied huge impact at all.
Invention content
In view of the deficiencies of the prior art, one of the objects of the present invention is to provide a kind of carcass compositions.
The second object of the present invention is to provide a kind of diamond block prepared using above-mentioned carcass composition and its system
Preparation Method.In the diamond block, diamond is uniformly distributed in locking nub, has good wearability, hardness, shock resistance tough
Property, it can be used for geology, coal and oil drilling Cutter or building materials, stone material drill cutting tooth etc..
To achieve the above object, the present invention uses following technical scheme：
A kind of carcass composition includes following component by weight percentage：The WC powder of 60-80%, the Co of 5-15%
Powder, the Cu powder of 5-12%, the Mn powder of 3-5%, the Zn powder of 2-6%, the self-fusible alloy powder of nickel-base of 3-8%.
The reasons why said components select is as follows：
WC powder is the most important wear-resistant component of carcass as carbide.Carcass group provided by the invention
WC content control is closed in object in 60-80wt%, additive amount is more than the ratio it will cause sintering temperature is excessively high or carcass sintering
Compactness is not high, and that it will cause Matrix Wear Resistances is inadequate less than the ratio for additive amount, and diamond falls off too early.
Co powder can effectively reduce the interface stress of cobalt and diamond, and the hold to improving diamond plays key
Effect, and the bending strength of carcass can be improved.The control of Co contents is in 5-15wt% in carcass composition provided by the invention.
Cu powder is mutually melted with Zn powder, is the main binding agent of carcass.Cu contents in carcass composition provided by the invention
Control is in 5-12wt%.
Mn powder has certain deoxidizing capacity to metal powder, participates in the alloying of carcass, strengthens carcass.The present invention
The control of Mn contents is in 3-5wt% in the carcass composition of offer.
Zn powder is mutually melted with Cu powder, is the main binding agent of carcass, and can reduce the sintering temperature of carcass.The present invention
The control of Zn contents is in 2-6wt% in the carcass composition of offer.
Self-fusible alloy powder of nickel-base plays a key effect to the hold for improving diamond.Carcass combination provided by the invention
The control of self-fusible alloy powder of nickel-base content is in 3-8wt% in object.
A kind of diamond block, including working lining；The working lining is made by percent by volume of following raw material：The tire
Body composition 50-70%, diamond 30-50%.In working lining, by 400% concentration system calculate, the diamond it is a concentration of
120-200%, the 1/4 of the concentration is actual concentration of the diamond phase for all materials in working lining raw material, and in other words, this is dense
The 1/4 of degree is actual concentration of the diamond phase for total addition of carcass composition and diamond, i.e., volume hundred described above
Divide and compares 30-50%.400% concentration be it is per cubic centimeter in locking nub working lining contain 17.56 carats of diamond, and 100%
Concentration then indicates per cubic centimeter in locking nub working lining and contains 4.39 carats of diamond, so 120%-200% concentration indicates
It is 5.268-8.78 containing diamond carats per cubic centimeter in locking nub working lining.In working lining, the percent by volume of diamond is less than
30%, it will cause locking nub wearability is inadequate, the percent by volume of diamond is more than 50%, then can excessively be caused because of diamond
Locking nub insufficient strength；It is preferably controlled in 35-47.5%.
In above-mentioned diamond block, the diamond block further includes transition zone as a preferred implementation manner, described
Transition zone is made of the carcass composition.The weld strength of the diamond block can be improved by adding transition zone more.
In above-mentioned diamond block, the thickness of the transition zone is the work thickness as a preferred implementation manner,
The 1/4-1/6 of degree, the diamond block under the thickness ratio have longer service life.
In above-mentioned diamond block, as a preferred implementation manner, the granularity of the diamond be -18~+25 mesh (i.e.
18 mesh screens can be penetrated, but impervious 25 mesh screen, i.e. size are about the diamond between 710-1000 microns)；Preferably, institute
The granularity for stating diamond, which is -18~+20 mesh, (can penetrate 18 mesh screens, but impervious 20 mesh screen, i.e. size are about 850-
Diamond between 1000 microns), or (20 mesh screens, but impervious 25 mesh screen, i.e. ruler can be penetrated for -20~+25 mesh
Very little is about the diamond between 710-850 microns), or be -18~+20 mesh (alternatively referred to as 18/20 mesh) and -20~+25 mesh
(the i.e. described diamond is the diamond and -20~+25 mesh Buddha's warrior attendants of -18~+20 mesh to the combination grain of (alternatively referred to as 20/25 mesh)
The mixture of stone).In above-mentioned diamond block, the shape of the diamond block can root as a preferred implementation manner,
It is arbitrarily devised according to needing, preferably the asymmetric wedge shape of symmetric wedge (referring to Fig. 1), oblate capitiform (referring to Fig. 2), cylinder (referring to
Fig. 3), track type (referring to Fig. 4) etc..
A kind of preparation method of diamond block, includes the following steps：
Step 1, carcass composition batch mixing step：Raw material is weighed according to the proportioning of above-mentioned carcass composition, mixed processing is equal
It is even, obtain carcass powder；
It is prepared by step 2, working lining raw material：Glue spraying processing is carried out to the diamond, then according to above-mentioned working lining raw material
Proportioning is round as a ball in diamond surface by the carcass powder, and the center of being formed is the metal ball (ginseng that outer layer of diamond is carcass powder
See Fig. 5)；That is, containing a diamond in each metal ball；Whole carcass powders needed for working lining are all wrapped in
The surface of each diamond forms the more uniform metal ball of granularity, it is ensured that diamond is uniform in carcass in working lining
Distribution；
Step 3, compression moulding processing：It takes metal ball made from step 2 to be routed in mold, place is pressed
Reason, obtains into parison；
Step 4, degumming process：Step 3 is obtained described at parison progress degumming process；
Step 5, vacuum-sintering processing：The blank that step 4 obtains is assembled into graphite jig, is carried out at vacuum-sintering
Reason, obtains sintered blank；
Step 6, hip treatment：Hip treatment will be carried out after the sintered blank jacket that step 5 obtains, obtained
To the diamond block.
The present invention technical thought be：Glue-spheronization process is added to keep diamond particles uniform in carcass material by being introduced into
Arrangement makes each diamond coat one layer of certain thickness carcass powder on its surface according to design concentration by specially treated
Then end sinters diamond block into, this technique makes the crane span structure phenomenon of diamond in locking nub substantially reduce, and creeps at it
Cheng Zhong, diamond block, which is reached to the new diamond of exposure by constantly consuming the carcass material plated, to be continued from sharp effect
Fruit, to keep faster rate of penetration for a long time.The pressure and impact force being subject in deep-well due to diamond block are huge
Greatly, need locking nub have high toughness, and the diamond block that conventional powder metallurgical obtains cannot be satisfied at all it is huge
Big impact, therefore heat and other static pressuring processes are also used in the diamond block preparation process of the application, in the common of high temperature and pressure
Under effect, locking nub is respectively pressurized to equilibrium, makes that the consistency of diamond block is high, uniformity is good, has excellent performance, and impact resistance is significantly
It improves.When round as a ball, according to the proportioning of diamond in working lining and carcass composition, i.e. the concentration 120-200% of diamond comes
Determine the amount of round as a ball required carcass composition.
In the preparation method of above-mentioned diamond block, further include before the step 3 as a preferred implementation manner,：
Transition zone material preparation step：The carcass powder made from the appropriate step 1 is taken, stirs evenly, is made after glue is added
Grain processing, obtains metallic particles；In the step 3, first choice takes metal ball made from step 2 to be routed in mold, then takes
Metallic particles made from the transition zone material preparation step is laid with above metal ball in a mold, then place is pressed
Reason, obtains into parison.
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, after the step 6, further include
Post-processing step carries out polishing burr, blasting treatment to the diamond block, obtains diamond block finished product.
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 1, the mixed processing
Time be 16-24h (such as 16.5h, 17h, 18h, 19h, 20h, 21h, 22h, 23h, 23.5h), the mixed processing process
In, the alcohol of the 2-5% (such as 2.5%, 3%, 3.5%, 4%, 4.5%) of the carcass composition weight is added, for wet
Moisten metal powder so that mixed evenly between powder.
In the preparation method of above-mentioned diamond block, glue spraying processing i.e. glue spraying, institute on the surface of diamond in step 2
The effect of glue is to form round or subcircular metal ball, transition zone to make diamond surface cling the carcass powder
Glue used in material preparation step be in order to which transition metal powder is pelletized, in the present invention glue that uses can be from
In the market buy or using usual way prepare, as a preferred implementation manner, the glue by granulation agent, ethylene glycol and
Isopropanol mixing, stirring, heating are made, wherein the granulation agent is preferably GB600 granulation agents, granulation agent, ethylene glycol and isopropyl
The weight ratio of alcohol is 3:5:2；Mixing speed is preferably 580-620rpm, and heating temperature is preferably 60-80 DEG C.
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 2, the glue spraying processing
Glue spraying amount be carcass composition weight 1-3% (such as 1.2%, 1.5%, 1.8%, 2.2%, 2.5%, 2.8%).
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in transition zone material preparation step
The additive amount of the glue is the 2-5% (such as 2.5%, 3%, 3.5%, 4%, 4.5%) of the carcass composition weight；It is more excellent
The granularity of selection of land, the granularity after metal powder is reunited after granulation, i.e., the described metallic particles is -20 mesh.
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 3, the compression moulding
Processing pressure 150-200MPa (such as 152MPa, 155MPa, 160MPa, 170MPa, 180MPa, 185MPa, 190MPa,
195MPa), dwell time 5-10s (such as 6s, 7s, 8s, 9s).
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 4, the degumming process
Temperature be 500-550 DEG C (such as 505 DEG C, 510 DEG C, 515 DEG C, 520 DEG C, 525 DEG C, 530 DEG C, 535 DEG C, 540 DEG C, 545 DEG C),
Time is 50-70min (such as 52min, 55min, 58min, 62min, 65min, 68min).
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 5, the vacuum-sintering
The temperature of processing is 980-1100 DEG C (such as 990 DEG C, 1000 DEG C, 1020 DEG C, 1040 DEG C, 1060 DEG C, 1080 DEG C, 1090 DEG C),
Pressure 30-40MPa (such as 32MPa, 34MPa, 36MPa, 38MPa, 39MPa), soaking time 5-10min (such as 5.5min,
6min, 7min, 8min, 9min, 9.5min), vacuum degree is 1 × 10-1Pa or less.
In the preparation method of above-mentioned diamond block, as a preferred implementation manner, in step 6, the hot isostatic pressing
The temperature of processing be 880-1000 DEG C (such as 885 DEG C, 890 DEG C, 900 DEG C, 920 DEG C, 940 DEG C, 960 DEG C, 980 DEG C, 990 DEG C,
995 DEG C), pressure 120-160MPa (such as 125MPa, 130MPa, 135MPa, 140MPa, 145MPa, 150MPa, 155MPa),
The heat-insulation pressure keeping time is 30-60min (such as 32min, 35min, 40min, 45min, 50min, 55min, 58min).
Above step and process conditions can be applied in combination under the premise of not conflicting mutually.
Compared with prior art, the beneficial effects of the invention are as follows：
1) nickel-based self-fluxing alloy powder and Mn powder, Zn powder combine can fuse into well other metal powders such as tungsten carbide,
Between copper powder, cobalt powder so that carcass has good intensity, toughness.
2) it since diamond is to be put into carcass by round as a ball, is not in direct contact between diamond particles, carcass is to gold
Hard rock has high hold, and diamond is not easy to fall off, therefore diamond block has good wearability.
3) for diamond block after vacuum heating-press sintering, carcass is dense, densification degree can reach 97% with
On；Using hip treatment, further the densification degree of carcass is promoted to 99% or more, greatly improves carcass
Toughness and wearability.
4) diamond block of the invention has superior toughness, wearability and diamond hold, and Buddha's warrior attendant
Stone is uniformly distributed, uniform force, can work under extremely severe probing/borehole environment.
Description of the drawings
Fig. 1 is the symmetric wedge diamond block structural schematic diagram that the preferred embodiment of the present invention provides；
Fig. 2 is the oblate capitiform diamond block structural schematic diagram that the preferred embodiment of the present invention provides；
Fig. 3 is the asymmetric wedge-shaped diamond block structural schematic diagram of cylinder that the preferred embodiment of the present invention provides；
Fig. 4 is the track type diamond block structural schematic diagram that the preferred embodiment of the present invention provides；
Fig. 5 is the photo schematic diagram of the metal ball formed after diamond is round as a ball；
Fig. 6 is diamond distribution photo schematic diagram in diamond block provided by the invention.
Specific implementation mode
Present disclosure will be described in further detail by embodiment combination attached drawing below, protection of the invention
Range is including but not limited to following embodiments.
Specific experiment step or condition are not specified in embodiment, according to conventional steps described in document in the art
Operation or condition can carry out.The rolling circle equipment used in embodiment is vibrating sieving machine, that is, diamond is allowed to be shaken in equipment
Dynamic, rolling, drying, sieving form ball；Glue spraying processing is carried out using glue sprayer in embodiment；The various examinations used in embodiment
Agent and raw material are commercial product, and nickel-based self-fluxing alloy powder is BNi71CrSi, by GB1085 9-89, AWS：BNi5, the trade mark：
Titd-Ni06)。
Embodiment 1
1) component and proportioning of the carcass composition used in the present embodiment are as follows：Include 60 parts of tungsten carbides by weight
Powder, 15 parts of cobalt powders, 12 parts of copper powders, 5 parts of manganese powders, 4 parts of zinc powders and 4 parts of nickel-based self-fluxing alloy powder.Raw material is taken to carry out by said ratio
Mixing material；3% alcohol of carcass composition weight, mixing time 20h are added when batch mixing；Obtain carcass powder.
2) prepared by working lining raw material：First, glue spraying processing is carried out to diamond, glue spraying amount is carcass composition weight
2%, wherein glue is 3 according to weight ratio by GB600 granulation agents, ethylene glycol and isopropanol:5:2 are made through mixing, stirring, heating,
Mixing speed 600rpm, 70 DEG C of heating temperature；It then, will whole carcass powder according to the proportioning of various raw materials in working lining
End is round as a ball in diamond surface, and the center of being formed is the metal ball (referring to Fig. 5) that outer layer of diamond is carcass powder, each metal ball
Inside contain a diamond；Diamond concentration is calculated by 400% concentration system, and for 130%, (actually diamond accounts for 32.5%, tire
67.5%) body composition accounts for, diamond grit is 18/20 mesh；
3) prepared by transition zone raw material：First, the carcass powder made from appropriate step 1) is taken, after 3% glue is added
It stirs evenly, then, carries out pelletization treatment, cross 20 mesh screens, form the metallic particles that granularity is -20 mesh；
4) it takes metal ball made from step 2) to be fitted into punching block, then metallic particles made from step 3) is taken to be fitted into punching block
The upper surface of and be laid on metal ball, processing, pressure 150MPa is pressed, pressing time 8s obtains into parison；
5) being put into reduction furnace at parison of obtaining of step 4) is subjected to degumming process, 550 DEG C of temperature, time 60min；
6) it is assembled into what step 5) obtained in graphite jig at parison, is put into vacuum sintering funace and carries out Vacuum Heat
It is 980 DEG C, pressure 40MPa, soaking time 6min to press sintering processes, temperature, vacuum degree 1 × 10-1Pa obtains sintered blank；
7) sintered blank that step 6) obtains is put into steel jacket, is put into hip treatment stove and carries out hot isostatic pressing
The temperature of processing, hip treatment is 880 DEG C, pressure 150MPa, and the heat-insulation pressure keeping time is 60min, obtains diamond block；
8) diamond block for obtaining step 7) carries out polishing burr, blasting treatment, obtains diamond block finished product.Figure
6 be the plane shape appearance figure of diamond block manufactured in the present embodiment, and as can be seen from the figure diamond is uniformly distributed in locking nub.
Diamond block made from the present embodiment is the cylinder of 15mm high, and wherein transition zone and working lining is vertical distribution, transition
Layer thickness is the 1/4 of work layer thickness, and specifically, top is working lining, thickness 12mm, and lower part is transition zone, thickness 3mm；
The service life of diamond block by wear tested than method test, wear resistance ratio refers to by locking nub and 80 mesh silicon carbide grinding wheels pair
Mill, the weight ratio of the weight and locking nub loss of grinding wheel loss, specific test method is referring to JB/T3235-1999, after tested originally
The service life (wear resistance ratio) of diamond block prepared by embodiment is 100,000；Other the performance test results are shown in Table 3.
Embodiment 2
1) component and proportioning of the carcass composition used in the present embodiment are as follows：Include 70 parts of tungsten carbides by weight
Powder, 10 parts of cobalt powders, 5 parts of copper powders, 5 parts of manganese powders, 5 parts of zinc powders and 5 parts of nickel-based self-fluxing alloy powder.Raw material is taken to be matched by said ratio
Batch mixing；3% alcohol of carcass composition weight, mixing time 20h are added when batch mixing；Obtain carcass powder.
2) prepared by working lining raw material：First, glue spraying processing is carried out to diamond, glue spraying amount is carcass composition weight
2%, glue is 3 according to weight ratio by GB600 granulation agents, ethylene glycol and isopropanol:5:2 are made through mixing, stirring, heating, stirring
Speed 600rpm, 70 DEG C of heating temperature；Then, according to the proportioning of various raw materials in working lining, will all the carcass powder exist
Diamond surface is round as a ball, and the center of being formed is the metal ball (referring to Fig. 5) that outer layer of diamond is carcass powder, and each metal ball includes
There is a diamond；Diamond concentration is calculated by 400% concentration system, and for 150%, (actually diamond accounts for 37.5%, carcass group
It closes object to account for 62.5%), diamond is 18/20 mesh and 20/25 mesh according to weight ratio 1:1 mixing；
3) prepared by transition zone raw material：First, the carcass powder made from appropriate step 1) is taken, after 3% glue is added
It stirs evenly, then, carries out pelletization treatment, cross 20 mesh screens, form the metallic particles that granularity is -20 mesh；
4) it takes metal ball made from step 2) to be fitted into punching block, then metallic particles made from step 3) is taken to be fitted into punching block
The upper surface of and be laid on metal ball, processing, pressure 150MPa is pressed, pressing time 8s obtains into parison；
5) being put into reduction furnace at parison of obtaining of step 4) is subjected to degumming process, 550 DEG C of temperature, time 60min；
6) it is assembled into what step 5) obtained in graphite jig at parison, is put into vacuum sintering funace and carries out Vacuum Heat
It is 1050 DEG C, pressure 40MPa, soaking time 6min to press sintering processes, temperature, vacuum degree 1 × 10-1Pa obtains sintered blank；
7) sintered blank that step 6) obtains is put into steel jacket, is put into hip treatment stove and carries out hot isostatic pressing
The temperature of processing, hip treatment is 950 DEG C, pressure 150MPa, and the heat-insulation pressure keeping time is 60min, obtains diamond block；
8) diamond block for obtaining step 7) carries out polishing burr, blasting treatment, obtains diamond block finished product.This
Diamond made from embodiment is block-shaped, highly identical as in embodiment 1, and wherein transition region thickness is work layer thickness
1/5, it is tested through method in the same manner as in Example 1, the service life (wear resistance ratio) of diamond block manufactured in the present embodiment is 120,000,
Other the performance test results are shown in Table 3.
Embodiment 3
1) component and proportioning of the carcass composition used in the present embodiment are as follows：Include 80 parts of tungsten carbides by weight
Powder, 5 parts of cobalt powders, 6 parts of copper powders, 4 parts of manganese powders, 2 parts of zinc powders and 3 parts of nickel-based self-fluxing alloy powder.Raw material is taken to be matched by said ratio
Batch mixing；3% alcohol of carcass composition weight, mixing time 20h are added when batch mixing；Obtain carcass powder.
2) prepared by working lining raw material：First, glue spraying processing is carried out to diamond, glue spraying amount is carcass composition weight
2%, glue is 3 according to weight ratio by GB600 granulation agents, ethylene glycol and isopropanol:5:2 are made through mixing, stirring, heating, stirring
Speed 600rpm, 70 DEG C of heating temperature；Then, according to the proportioning of various raw materials in working lining, will all the carcass powder exist
Diamond surface is round as a ball, and the center of being formed is the metal ball (referring to Fig. 5) that outer layer of diamond is carcass powder, and each metal ball includes
There is a diamond；Diamond concentration is calculated by 400% concentration system, and for 190%, (actually diamond accounts for 47.5%, carcass group
It closes object to account for 52.5%), diamond grit is 18/20 mesh；
3) prepared by transition zone raw material：First, the carcass powder made from appropriate step 1) is taken, after 3% glue is added
It stirs evenly；Then, pelletization treatment is carried out, 20 mesh screens are crossed, forms the metallic particles that granularity is -20 mesh；
4) it takes metal ball made from step 2) to be fitted into punching block, then metallic particles made from step 3) is taken to be fitted into punching block
The upper surface of and be laid on metal ball, processing, pressure 150MPa is pressed, pressing time 8s obtains into parison；
5) being put into reduction furnace at parison of obtaining of step 4) is subjected to degumming process, 550 DEG C of temperature, time 60min；
6) it is assembled into what step 5) obtained in graphite jig at parison, is put into vacuum sintering funace and carries out Vacuum Heat
It is 1100 DEG C, pressure 40MPa, soaking time 6min to press sintering processes, temperature, vacuum degree 1 × 10-1Pa obtains sintered blank；
7) sintered blank that step 6) obtains is put into steel jacket, is put into hip treatment stove and carries out hot isostatic pressing
The temperature of processing, hip treatment is 1000 DEG C, pressure 150MPa, and the heat-insulation pressure keeping time is 60min, obtains diamond
Block；
8) diamond block for obtaining step 7) carries out polishing burr, blasting treatment, obtains diamond block finished product.This
Diamond made from embodiment is block-shaped, highly identical as in embodiment 1, and wherein transition region thickness is work layer thickness
1/6, it is tested through method in the same manner as in Example 1, the service life (wear resistance ratio) of diamond block manufactured in the present embodiment is 150,000,
Other the performance test results are shown in Table 3.
Embodiment 4-5
In addition to the parameter of hip treatment step is different from embodiment 1, other operating procedures and the same embodiment of parameter
1.Hip treatment parameter such as the following table 1 of embodiment 4-5.
1 embodiment 4-5 hip treatment parameters of table
Embodiment 6-9
In addition to the parameter of vacuum-sintering processing step is different from embodiment 1, other operating procedures and the same embodiment of parameter
1.Vacuum-sintering processing parameter such as the following table 2 of embodiment 6-9.
The vacuum-sintering processing parameter of 2 embodiment 6-9 of table
Embodiment 10-13 and comparative example 1
Embodiment 10-13 is in addition to the proportioning of carcass composition is different from embodiment 1, the preparation method of diamond block
With embodiment 1.The proportioning of the carcass composition used in embodiment 10-13 such as the following table 3.
The carcass composition component and proportioning (wt%) of 2 embodiment 10-13 of table
Test example
The diamond block that above example and comparative example is prepared in the present invention is tested, as a result referring to table 3.Firmly
The test method of degree HRC is to test hardness using Rockwell apparatus；Bending strength is used uses three on universal testing machine
Point bend test method is tested；Consistency is tested using drainage；Ballistic work is tested using pendulum impact test instrument.
3 embodiment diamond block the performance test results of table
| Number | Hardness HRC | Bending strength/MPa | Densification degree/% | Ballistic work/J |
| Embodiment 1 | 50 | 1015 | 99.5 | 452 |
| Embodiment 2 | 56 | 985 | 99.1 | 428 |
| Embodiment 3 | 58 | 962 | 99 | 410 |
| Embodiment 4 | 48 | 930 | 98.7 | 401 |
| Embodiment 5 | 51 | 928 | 99.0 | 392 |
| Embodiment 6 | 45 | 880 | 98.2 | 368 |
| Embodiment 7 | 52 | 935 | 98.6 | 421 |
| Embodiment 8 | 53 | 910 | 99.2 | 415 |
| Embodiment 9 | 55 | 872 | 98.9 | 388 |
| Embodiment 10 | 47 | 941 | 99.2 | 416 |
| Embodiment 11 | 52 | 918 | 98.9 | 405 |
| Embodiment 12 | 56 | 985 | 99.1 | 428 |
| Embodiment 13 | 58 | 962 | 99.0 | 410 |
| Comparative example 1 | 46 | 815 | 98.4 | 352 |
As can be seen from the above embodiments, diamond block provided by the invention has superior toughness, wear-resisting
Property and diamond hold, and diamond uniform be distributed uniform force, can under extremely severe probing/borehole environment work
Make.
Claims (10)
1. a kind of carcass composition, which is characterized in that the carcass composition includes following component by weight percentage：60-
80% WC powder, the Co powder of 5-15%, the Cu powder of 5-12%, the Mn powder of 3-5%, the Zn powder of 2-6%, 3-8%
Self-fusible alloy powder of nickel-base.
2. a kind of diamond block, which is characterized in that the diamond block includes working lining；The working lining presses volume basis
Than being made of following raw material：Carcass composition 50-70%, diamond 30-50% as described in claim 1；Preferably, described
The percent by volume of diamond is 35-47.5%.
3. diamond block according to claim 2, which is characterized in that the diamond block further includes transition zone, institute
Transition zone is stated to be made of the carcass composition；Preferably, the thickness of the transition zone is the 1/4-1/ of the work layer thickness
6。
4. diamond block according to claim 2 or 3, which is characterized in that the granularity of the diamond is -18~+25
Mesh；Preferably, the granularity of the diamond is -18~+20 mesh, is either -20~+25 mesh or is -18~+20 mesh and -20
The combination grain of~+25 mesh；It is highly preferred that the shape of the diamond block is symmetric wedge, oblate head dummy, cylinder asymmetry
Wedge shape or track type.
5. a kind of preparation method of diamond block, which is characterized in that the preparation method includes the following steps：
Step 1, carcass composition batch mixing step：Raw material is weighed according to the proportioning of carcass composition as described in claim 1, is mixed
It is uniform to close processing, obtains carcass powder；
It is prepared by step 2, working lining raw material：Glue spraying processing is carried out to diamond, then according to any one of claim 2-4 institutes
State working lining raw material proportioning the carcass powder is round as a ball in the diamond surface, the center of being formed is diamond, outer layer is tire
The metal ball of body powder；
Step 3, compression moulding processing：It takes the metal ball made from step 2 to be routed in mold, place is pressed
Reason, obtains into parison；
Step 4, degumming process：Step 3 is obtained described at parison progress degumming process；
Step 5, vacuum-sintering processing：The blank that step 4 obtains is assembled into graphite jig, vacuum-sintering processing is carried out,
Obtain sintered blank；
Step 6, hip treatment：Hip treatment will be carried out after the sintered blank jacket that step 5 obtains, obtains institute
State diamond block.
6. the preparation method of diamond block according to claim 5, which is characterized in that further include before the step 3：
Transition zone material preparation step：The carcass powder made from the appropriate step 1 is taken, stirs evenly, is made after glue is added
Grain processing, obtains metallic particles；In the step 3, first choice takes metal ball made from step 2 to be routed in mold, then takes
Metallic particles made from the transition zone material preparation step is laid with above metal ball in a mold, then place is pressed
Reason, obtains into parison；Preferably, further include post-processing step after the step 6, polish the diamond block
Burr, blasting treatment obtain diamond block finished product.
7. according to the preparation method of the diamond block of claim 5 or 6, which is characterized in that in step 1, at the mixing
The time of reason is 16-24h, and during the mixed processing, the alcohol of the 2-5% of the carcass composition weight is added.
8. according to the preparation method of the diamond block of claim 5 or 6, which is characterized in that in step 2, at the glue spraying
The glue spraying amount of reason is the 1-3% of carcass composition weight；
Preferably, in the transition zone material preparation step, the additive amount of the glue is the 2- of the carcass composition weight
5%；It is highly preferred that the granularity of the metallic particles is -20 mesh；
It is further preferred that step 2 neutralizes in the transition zone material preparation step, the glue is by granulation agent, ethylene glycol and different
Propyl alcohol mixing, stirring, heating are made, wherein the granulation agent is preferably GB600 granulation agents, granulation agent, ethylene glycol and isopropanol
Weight ratio be 3:5:2；Mixing speed is preferably 580-620rpm, and heating temperature is preferably 60-80 DEG C.
9. according to the preparation method of the diamond block of claim 5 or 6, which is characterized in that described to be pressed into step 3
The pressure 150-200MPa, dwell time 5-10s of type processing；
Preferably, in step 4, the temperature of the degumming process is 500-550 DEG C, time 50-70min.
10. according to the preparation method of the diamond block of claim 5 or 6, which is characterized in that in step 5, the vacuum
The temperature of sintering processes is 980-1100 DEG C, pressure 30-40MPa, soaking time 5-10min, and vacuum degree is 1 × 10-1Pa or less；
Preferably, in step 6, the temperature of the hip treatment is 880-1000 DEG C, pressure 120-160MPa, and heat preservation is protected
The pressure time is 30-60min.
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