CN104010751A - Method of making cutter elements - Google Patents
Method of making cutter elements Download PDFInfo
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- CN104010751A CN104010751A CN201280063194.9A CN201280063194A CN104010751A CN 104010751 A CN104010751 A CN 104010751A CN 201280063194 A CN201280063194 A CN 201280063194A CN 104010751 A CN104010751 A CN 104010751A
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- CN
- China
- Prior art keywords
- lotion
- superhard particles
- cutter elements
- green compact
- superhard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0063—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
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- 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
A method for making a cutter element, the method including combining a plurality of super-hard grains, a powder source of bond material for bonding the super-hard grains in the cutter element, and a fluid medium to form a paste, in which the content of the super-hard grains is sufficient for the content of the super-hard grains in the cutter element to be at least about 3 volume per cent. The paste is introduced into an extrusion device and extruded to form a green body, which is sintered to provide the cutter element. In some examples, the cutter element may be for a saw blade or drill bit.
Description
Technical field
The disclosure relates generally to a kind of for making the method for cutter elements, particularly but not exclusively, and for making the method for drill bit and saw blade.
Background technology
U.S. Patent number 6,102,140 disclose a kind of method being used to form for the plug-in unit of ground engagement instrument.A kind of container is provided, and the one of choosing in district's the first mixture and the second mixture of container is filled, described the first mixture is pulverous tungsten carbide and metallic cobalt, and described the second mixture is pulverous tungsten carbide and the metallic cobalt with diamond particles.After this, fill with the another kind in the first mixture and the second mixture in another district of container.Container is sealed, and simultaneously heated and be pressurized to a temperature and compacting and reach the time that is enough to cemented tungsten carbide and metallic cobalt and mixture is melt into single body.
U.S. Patent number 6,319,460 disclose a kind of method for the manufacture of super-hard compound material.The method comprises: provide diamond dust, approximately 40% to 85% of the volume that described diamond dust is super-hard compound material; Provide metal matrix composite, approximately 15% to 60% of the volume that described metal matrix composite is super-hard compound material; Mill superhard component to realize uniform mixture by metal matrix composite; And by uniform mixture compacted at least 95% the actual density to the theoretical maximum density of mixture.
Need to be a kind of for making the alternative of cutter elements, described cutter elements is for the instrument such as the drill bit for piercing ground and saw blade.
Summary of the invention
In view of first aspect, provide a kind of for making the method for cutter elements, the method comprises: by multiple superhard particles (particle that contains superhard material), combine to form lotion for the jointing material powder source in the bonding superhard particles of cutter elements and fluid media (medium); Lotion is introduced in pressurizing unit; Extruding lotion is to form green compact; And sintering green compact are to provide cutter elements; Wherein, the content of the superhard particles in lotion is enough to be used in making the content of the superhard particles in cutter elements to reach the percent by volume at least about 3.
Jointing material is the material that is suitable for providing such, that is, other component in the cutter elements that described material can be crossed superhard particles and sintering can be bonded together.
For the method, the disclosure is susceptible to various combinations and layout, the example of the nonrestrictive and nonexcludability of the method comprises the following steps, in the illustrative methods that comprises combination the first lotion and the second lotion, can apply the first lotion and the second lotion in a kind of or both.
In some examples, superhard particles can comprise diamond (natural diamond or diamond synthesis) or cubic boron nitride (cBN).
In some examples, multiple superhard particles can have at least about 100 microns and at the most approximately 2,000 microns average-size or fall in 12/200 U.S.'s size of mesh band (US Mesh band).
In some examples, the content of diamond dust can be chosen as is enough to be used in making the content of the diamond dust in cutter elements that sintering crosses to reach at least about 3 percent by volume and approximately 60 percent by volume at the most.
In some examples, the powder source of jointing material can comprise the particle of jointing material and or for the precursor material of jointing material, precursor material can transform or react to discharge jointing material.The example of jointing material comprises cobalt (Co), iron (Fe), nickel (Ni) and or comprises any suitable alloy material in above these materials.In some examples, jointing material can comprise cobalt (Co).
In some examples, the method can comprise: granulated metal carbide material is combined with superhard particles, jointing material and fluid media (medium).For example, hard material can comprise the ceramic material such as metal carbide material or metal oxide materials, and jointing material can be bonded together diamond dust and hard material being chosen as in the cutter elements completing.The example of metal carbides comprises tungsten carbide (WC) or titanium carbide (TiC).The weight ratio of jointing material and metal carbide material can be at least 10:90 and at the most 90:10.
In some examples, the method can comprise: fluid thickening material is combined with superhard particles, jointing material and fluid media (medium), and operation is to increase the viscosity of fluid media (medium) like this; With or the method can comprise: mechanically process lotion or make lotion ageing to increase the viscosity of lotion, operation is with the viscosity of increase fluid media (medium) like this.Fluid thickening material can be called adhesive material and can comprise organic material or inorganic material.The example of organic bond material comprises methylcellulose and polyethylene glycol (PEG), and the example of fluid media (medium) comprises water or ethanol.The viscosity of lotion can be by introducing more fluid media (medium) or changing by removing fluid media (medium).
In some examples, the method can comprise: lotion is introduced in die cavity, and pressurization lotion is to form green compact.
In some examples, the method can comprise: extruding lotion, to form intermediate, is introduced intermediate in pressurizing unit, and pressurization intermediate is included in the lotion in intermediate with extruding.
In some examples, the method can comprise: lotion is formed to intermediate, and intermediate is processed into at least one green compact.The method can comprise: the step of described processing intermediate comprises cutting intermediate.
In some examples, the method can comprise at least three extrusion cycle, and each extrusion cycle comprises extruding lotion.
In some examples, the density of green compact can be the composition material except fluid media (medium) greatest combined solid density at least 40% and at the most 70%.
In some examples, at least a portion of green compact can be the shape of cylindrical shape or rhombus.
In some examples, the method can comprise: make green compact be subject to high temperature and high pressure to form cutter elements.
In some examples, the method can comprise: provide the first lotion according to the disclosure; The second lotion is provided, and described the second lotion comprises the powder that can be sintered a part that forms cutter elements, and the second lotion has the material composition different from the material composition of the first lotion; Combine the first lotion and the second lotion to form green compact, and sintering green compact are to form cutter elements.Conventionally, the second lotion will have the material composition substantially different from the material composition of the first lotion, the each composition in the first lotion and the second lotion be chosen as be suitable for combination and sintering with formation cutter elements at least a portion.
Comprising that in some example of combination the first lotion and the second lotion, the second lotion can comprise superhard particles, described superhard particles has the distribution of sizes different from superhard particles in the first lotion.
In some examples, the second lotion can comprise the superhard particles content different from the first lotion.In some examples, the second lotion can not have superhard particles substantially.
In some examples, the second lotion can comprise the second powder source of the second jointing material, and the second lotion can comprise with the first lotion being the identical jointing material source of one species substantially; Or the second lotion can not be included in the jointing material in the first lotion substantially.
In some examples, the method can comprise: by multiple superhard particles, combine to form the first lotion for the jointing material powder source in the bonding superhard particles of cutter elements and fluid media (medium), wherein the content of superhard particles is enough to be used in making the content of the superhard particles in cutter elements to reach at least about 3 percent by volume or at least about 10 percent by volume; The second lotion is provided, and described the second lotion comprises the powder that can be sintered a part that forms cutter elements; Combine the first lotion and the second lotion to form green compact, and sintering green compact are to form cutter elements.
In various examples, superhard particles can be arranged to material that can be bonding with jointing material apply, material that need not be bonding with jointing material applies or is coated with material that can be bonding with jointing material.
In some examples, in superhard particles at least some can be arranged to be encapsulated in bead.The volume of each bead can be at least twice of the volume of superhard particles.
In some examples, each bead can comprise superhard particles, at least in part encapsulate superhard particles in seal district and in encapsulation, seal the outer encapsulating district in district at least in part; Inside seal district and there is the obviously larger wearability than outer encapsulating district.The volume of inside sealing district can be bead volume at least about 20% and or in seal district volume can be bead volume at the most approximately 75%.
In some examples, in superhard particles at least some can be encapsulated in bead or be embedded in addition in bead, described bead comprises the agglomerated powder of larger volume, and described agglomerated powder can be sintered or not be sintered and or can keep together by the adhesive material such as organic bond.Each bead can accommodate single superhard particles or more than one superhard particles.
In some examples, bead can comprise the jointing material that is applicable to cutter elements, and bead can accommodate the particle such as the ceramic material of metal carbides.
In some examples, the method can comprise: introduce one or more lotions again, and repeat extrusion process.This can have the inhomogeneity aspect of the superhard particles distribution strengthening in cutter elements.One or more intermediates can be cut into the length of expectation to form green compact or body.At least a portion of green compact can have substantially columnar shape.The density of green compact can be mixture of powders (composition except fluid media (medium)) maximum theory density at least about 40% and or maximum theory density at the most approximately 70%.Green compact can be subject to high temperature and can be pressurized with sintered powder is formed for cutter elements or the sintering of the cutter elements that substantially completes is crossed body.In some examples, fluid media (medium) can be removed from green compact before sintering.The body that sintering is crossed can be processed to form cutter elements.
In some examples, in hard material at least some and or jointing material source can there is the form of the granular materials or the coated structure that adhere to diamond dust.
Illustrative methods can comprise: by additive material and superhard particles, jointing material and fluid media (medium) and or hard material (if present) combination.Additive material can be chosen as some feature for strengthening cutter elements, for example, sintering quality, density, hardness, intensity, elastic modelling quantity, wearability, hot property, purity, like that.The example of additive material can comprise: copper (Cu) and or manganese (Mn) or comprise any suitable alloy material in these materials.In some examples, the combined content of the additive material in the mixture of powders except diamond dust can be approximately 20 percentage by weight at the most.
In some examples, cutter elements can be for piercing drill bit in ground or for saw blade.In some exemplary arrangement, at least a portion of body and cutter elements can have the shape of general cylindrical shape, for example, positive cylindrical shape, and or the end of cutter elements or body can be substantially flat, hemispheric, conical or Frusto-conical.Cutter elements can be for saw blade, and described saw blade is used for cutting stone, composite or other grinding-material.In some is arranged, cutter elements can have the shape of almost diamond conventionally.
Can provide make according to method of the present disclosure for example for the cutter elements of saw blade or drill bit and comprise the instrument of cutter elements.
Brief description of the drawings
Nonrestrictive exemplary arrangement is shown with reference to the accompanying drawings, wherein:
Figure 1A illustrates the perspective schematic view for the exemplary segmentation of diamond saw blade;
Figure 1B illustrates for the compound lotion bar of the exemplary segmentation of saw blade and the schematic side elevation of green compact; With
Fig. 2 illustrates the schematic cross sectional views of the exemplary bead that accommodates superhard particles.
Detailed description of the invention
Figure 1A illustrates the cutter elements of the form with compound segmentation 300, and for cutting the circular saw blade of stone, segmentation 300 is by obtaining according to method of the present disclosure.Segmentation 300 comprises three layers: pair of outer layer 310, described pair of outer layer 310 is adhered to the opposite side of the internal layer 320 between pair of outer layer 310.Outer 310 can accommodate higher diamond dust content than internal layer 320.In use, segmentation 300 will be driven along cut direction C by blade, and described segmentation will be attached to described blade.
Be used for the method for the exemplary cut device element of making the type shown in Figure 1A now with reference to Figure 1B explanation.Diamond abrasive grain and metallic matrix powder will be provided, and described metallic matrix powder comprises and is suitable for being sintered and being adhered to diamond abrasive grain to form the metal or alloy of cutter elements.Diamond abrasive grain is suitable for being carried out cutting operation and can being had the size in 120/18 U.S.'s size of mesh band by cutter elements by being chosen as, for example, and for cutting stone or rock.By for the preparation of making the first lotion of internal layer and for making outer field the second lotion.Substantially different in a certain respect by its composition of the first lotion and the second lotion, for example, diamond content, diamond distribution of sizes or adhesive material.Two kinds of lotions can be by diamond dust is mixed to prepare with metal dust, and the mass ratio of diamond dust and metal dust is chosen according to the diamond content of the expectation in every kind of lotion.Such as methylcellulose and or the organic bond material of polyethylene glycol (PEG) can be introduced in the mixture of diamond dust and metal dust, and can then in mixing, in mixture, introduce lentamente water to form lotion.Lotion can be by kneading, by packed and or be stored time enough section for making methylcellulose reach its viscosity substantially completely.Can introduce in extrusion die cavity individually and in turn and be extruded to form corresponding bar for every kind in lotion, described be basic rectangle in this example.The bar 520 being formed by the first lotion can by " folder " between the external bar 510 being formed by the second lotion to form the compound bar 500 of three layers.Can be with thering is the extrusion equipment that subtracts undersized extruding outlet for making bar 500 dense, can then be introduced in extrusion chamber for described 500 and be extruded to provide and there is the width that substantially reduces and the middle compound bar of three layers of height.Central strip can be cut to provide some green compact 400 to come for sintering.Each green compact 400 can be placed in graphite jig and under high temperature and high pressure processed with sintering metal powder with corresponding cutter segmentation 300 is provided.
The flexible program of described method will be apparent, and can comprise: for example, be not extruding lotion, but roll lotion to form bar.Have in the example of shape of non-rhombus at body to be sintered, for example, for the fringing of diamond rope saw or for the cylindrical shape plug-in unit of the drill bit of surface drilling, lotion can be squeezed into other shape, for example, cylindrical rod or concentric tube.
In some exemplary arrangement, superhard particles can be encapsulated in bead.With reference to Fig. 2, exemplary bead 600 has: superhard core 610, and described superhard core 610 comprises diamond dust; Inside seal district 620, seal district 620 in described to encapsulate superhard core 610 completely; With outer encapsulating district 630, described outer encapsulating district 630 seals district 620 in encapsulating completely.Inside seal district 620 harder and there is larger wearability than outer encapsulating district 630 than outer encapsulating district 630.In one example, diamond dust 610 can have the diameter dimension at least about 100 microns, and bead 600 can be roughly spherical and have at least about 200 microns and the diameter of approximately 5,000 microns at the most.Inside seal district 620 and can there is the average thickness at least about 100 microns, and outer encapsulating district 630 can have the thickness at least about 25 microns.Inside sealing district 620 can comprise: superhard material or ceramic material, for example, tungsten carbide, titanium carbide, carborundum, niobium carbide, molybdenum carbide, hafnium carbide or ramet; Or hardening oxidation material, for example, aluminium oxide or zirconia; Or hard nitride material, for example, silicon nitride or cubic boron nitride; Or hard carbon nitride material, for example, titanium carbonitride.In some examples, outer encapsulating district 630 can not be included the superhard or ceramic material of sealing in district 620 substantially, or the density of the superhard or ceramic material that holds of outer encapsulating district 630 can be lower than the density at the interior superhard or ceramic material holding in sealing district 620.In EP0012631, EP1894983, EP2059617, EP2176372, EP2240549, GB1014295, US4770907, US5143523 and US5405573, the illustrative methods of bead is made in explanation.
Exemplary drill bit can be for piercing ground in oil and natural gas probing, and can comprise multiple rib structures and multiple cutter elements of obtaining according to method of the present disclosure.Cutter elements can embed in the bag-shaped portion being formed in rib structure, and a part for each cutter elements is exposed for cutting rock.Each cutter elements can comprise: embed the diamond dust in the hard alloy substrate that contains WC particle; With the adhesive material that contains Co.In some examples, diamond dust can have the distribution of sizes falling in 18/35 U.S.'s size of mesh band, and the content of diamond dust can be from approximately 20 extremely approximately 30 percent by volume of percent by volume.The content of the WC particle in matrix material can have approximately 80 percentage by weight, and the content of the adhesive material in matrix material can have approximately 20 percentage by weight.In use, drill bit can rotate and be driven in the rock stratum in land, and cutter elements will engage rock stratum and cut rock stratum.Along with cutting is advanced, matrix material will obtain than Diamond Wear faster, cause diamond dust outstanding from the expose portion of each cutter elements, improve like this cutting efficiency.Along with cutting is advanced further, some in outstanding diamond dust can be pulled out and be lost, and other diamond dust will become the diamond dust of new exposure.Conventionally, the working life of instrument and can have complicated balance between cutting speed on the other hand on the one hand, it can be subject to the impact of various factors, for example, the diamond dust in each cutter elements distributes uniformity, the wearability of matrix material and the bonding strength between diamond dust and matrix.In these factors at least some can be subject to the impact for the manufacture of the method for cutter elements, but the details of this link unclear.
Conventionally,, if the superhard particles content in cutter elements is less than 3 percent by volume substantially, the cutting efficiency of cutter elements may be too low in some applications.Conventionally, the content of superhard particles and the composition of element can be chosen according to the needs of various application, for example, pierce in ground, or Concrete Cutting or stone.In lotion and the ceramic particle such as metal carbides that therefore comprises in cutter elements can have strengthen cutter elements wearability aspect.It seems that the lotion extruding that unexpectedly, contains the superhard particles content enough for practical application do not cause extrusion equipment consume fast wastefully.In the situation that not hope is subject to particular theory constraint, can works as when lotion is just being extruded and between superhard particles and extruding equipment, form the layer of fluid or the layer of other material, thus potentially for equipment provides certain protection.The protection of equipment can be further by superhard particles being encapsulated in harder inner region and softer outskirt and or applying or be coated superhard particles by the coating with thinner and strengthen.The viscosity increasing or reduce lotion can help its extruding, and the viscosity increasing can increase the robustness of green compact.
Nonrestrictive example is below provided in further detail.
Example 1
By a kind of explanation for making the illustrative methods of exemplary cut device element of diamond dust of the percent by volume that comprises approximately 25.In this example, diamond dust will be embedded in Widia matrix material, and described Widia matrix material comprises the WC of 50 percentage by weight, the Co of approximately 43 percentage by weight and approximately 7 the Cu of percentage by weight and the additive of Mn.
By providing multiple diamond dust by the uncoated diamond dust fusion in 30/35 U.S.'s size of mesh band of the uncoated diamond dust in 25/30 U.S.'s size of mesh band of about 0.36g and 0.24g.Diamond dust and metlbond powder mix by planetary stirring machine with the organic bond material that contains methylcellulose and PEG200.The content of methylcellulose is 1.5% (that is, in this example, 7.5g) of diamond weight, and the content of PEG200 is 33% (that is, for this example, 2.5ml) of cellulose additive.Metal dust is initial under the dry condition mixed in adding methylcellulose and PEG powder.In mixture, introduce lentamente water, until mixture forms lotion.Lotion by kneading one little can youngster, by packed and be stored time enough section for making methylcellulose reach its viscosity substantially completely.Lotion be introduced in extrusion die cavity and by the sliding cylinder extrusion of hydraulic actuation to form shaft-like length.Shaft-like length is introduced in extrusion die then again, and extrusion process is repeated approximately five times to guarantee that diamond dust is uniformly distributed, and the bar producing in final extraction circulation is cut into the length of expectation.In this stage, the density of the bar of estimation is approximately 50% of maximum theory density.Insertion rod in the die cavity of graphite jig, inserts plunger, and die assembly is inserted in sintering pressure machine, and its king-rod is sintered into higher density to produce cutter elements.
Cutter elements is installed to the drill body of " impreg " type for piercing ground, and wherein drill body comprises the diamond dust being dispersed in tungsten carbide.In this concrete field trial, the speed of creeping into of drill bit is significantly greater than the speed of creeping into for the comparable state of the prior art drill bit of rockhole type.
Example 2
Can produce the compound cuts device segmentation for circular saw blade, this segmentation comprises three adhesive layers, and described three adhesive layers are arranged between pair of outer layer, to have internal layer.The diamond concentration that the diamond concentration that internal layer has has lower than skin, described two skins have essentially identical diamond concentration.Segmentation can have the length of width and the 12mm of 5mm, and each skin has the thickness of about 1mm, and internal layer has the thickness of about 3mm.Explanation is used for making to the method for compound cuts device segmentation.
Diamond abrasive grain and the metallic matrix powder that comprises copper, cobalt and iron in 40/50 U.S.'s size of mesh band are provided.For the preparation of the first lotion of making internal layer, it comprises the metallic matrix powder of 1,915kg and the diamond abrasive grain of 85g, and for the preparation of making outer field the second lotion, it comprises the metallic matrix powder of 1,870g kg and the diamond abrasive grain of 130g.Substantially as described in example 1, prepare lotion.The first lotion is placed in extrusion chamber, and squeezes out the first rectangular strip being made up of the first lotion, and Article 1 has length, the width of 60mm and the thickness of 30mm of 100mm.The second lotion is placed in extrusion chamber, and squeezes out the second rectangular strip and the 3rd rectangular strip that are made up of the second lotion, each length, the width of 60mm and the thickness of 10mm with 100mm in the second rectangular strip and the 3rd rectangular strip.Article 1 by " folder " between Article 2 and Article 3 taking formation length as 100mm, width as 60mm and thickness be the compound bar of three layers of 50mm.The size of the extruding outlet of extrusion equipment reduces by factor 5, so that the opening of the size with 10mm × 12mm to be provided.Compound bar is inserted in extrusion chamber and is extruded to provide width to be 12mm and to be highly the compound bar of three layers of 10mm.Bar is cut, and so that some sections of bars to be provided, every section of bar all has the length of 40mm, and every section of bar is all the green compact for sintering.Each green compact are placed in graphite jig, and described graphite jig is configured to receive the green compact with these sizes, and the processed cutter segmentation to provide corresponding sintering to cross under high temperature and high pressure of each green compact.
Example 3
Can produce the compound cuts device segmentation for circular saw blade, this segmentation comprises seven adhesive layers and has the thickness of 10.5mm and the width of 15mm, and each layer has the thickness of 1.5mm.
Diamond abrasive grain and the metallic matrix powder that comprises copper, cobalt and iron in 40/50 U.S.'s size of mesh band are provided.Basic the second lotion of preparing the first lotion that contains diamond dust and there is no diamond dust as described in example 1.The metallic matrix powder that the first lotion contains 1,825kg and the diamond dust of 175g, the second lotion contains parent metal powder, but there is no diamond.The first lotion is placed in extrusion chamber, squeezes out four and contains adamantine, and each has length, the height of 15mm and the width of 75mm of 100mm.The second lotion is placed in extrusion chamber, and squeezing out three does not have adamantine, and each has and contain adamantine identical size.Seven bars are stacking each other in that replace, staggered layout, contain adamantine and be disposed in stacking bottom and top place in described layout.The compound bar of seven layers obtaining has height, the width of 75mm and the length of 100mm of 105mm.The outlet of crush resistance is changed to 21mm × 15mm, and compound bar is introduced in extrusion chamber and is extruded to provide the bar with these sizes.Bar is cut into some sections so that some green compact to be provided, and each section is 30mm.The compound segmentation of high temperature and high pressure to provide sintering to cross is provided these green compact.
To explain simply as used herein some term and concept.
Lotion is such material,, described material was all presented as solid before being applied with enough large load and stress, and in the time applying enough large load and stress, this material is mobile as viscous fluid, and viscosity is the measurement of the fluid resistance to being out of shape by shearing or tensile stress.For example, unless lotion is applied to enough large pressure, lotion can not be extruded substantially.As used herein, lotion comprises the suspension of the particle in fluid media (medium).The content of the particle in suspension impels suspension to embody for lotion even as big as particle is contacted with each other.
Superhard material has the mohs hardness at least about 9.5, and it comprises natural or diamond synthesis, polycrystalline diamond (PCD), cubic boron nitride (cBN) or polycrystalline cubic boron nitride (PCBN).Hard material has at least about 9 mohs hardness or at least about the elastic modelling quantity of 300GPa, and comprises tungsten carbide and titanium carbide.
Green compact are goods of self-supporting, and it comprises the dusty material that can be sintered to form attaching components.Exemplary green compact can comprise dusty material, and described dusty material keeps together by adhesive material or by interlocking between powder particle.
Claims (25)
1. for making a method for cutter elements, described method comprises: by multiple superhard particles, combine to form lotion for the jointing material powder source in the bonding described superhard particles of described cutter elements and fluid media (medium); Described lotion is introduced in pressurizing unit; Push described lotion to form green compact; And described in sintering green compact so that described cutter elements to be provided; Wherein, the content of the described superhard particles in described lotion is enough to be used in making the content of the described superhard particles in described cutter elements to reach the percent by volume at least about 3.
2. method according to claim 1, wherein, described superhard particles comprises diamond or cubic boron nitride (cBN).
3. according to claim 1 or method claimed in claim 2, wherein, described jointing material comprises cobalt.
4. according to the method described in any one of the preceding claims, comprising: granulated metal carbide material is combined with described superhard particles, described jointing material and described fluid media (medium).
5. method according to claim 4, wherein, the weight ratio of described jointing material and described metal carbide material is at least 10:90 and at the most 90:10.
6. according to the method described in any one of the preceding claims, comprising: fluid thickening material is combined with described superhard particles, described jointing material and described fluid media (medium), for increasing the viscosity of described fluid.
7. according to the method described in any one of the preceding claims, comprising: mechanically process described lotion or make described lotion ageing to increase the viscosity of described lotion.
8. according to the method described in any one of the preceding claims, comprising: described lotion is introduced in die cavity and the described lotion that pressurizes.
9. according to the method described in any one of the preceding claims, comprising: push described lotion to form intermediate, described intermediate is introduced in described pressurizing unit, and the described intermediate that pressurizes is included in the described lotion in described intermediate with extruding.
10. according to the method described in any one of the preceding claims, comprising: at least three extrusion cycle, each described extrusion cycle comprises the described lotion of extruding.
11. according to the method described in any one of the preceding claims, comprising: described lotion is formed to intermediate, and described intermediate is processed into at least one green compact.
12. methods according to claim 11, wherein, the step of processing described intermediate comprises: cut described intermediate.
13. according to the method described in any one of the preceding claims, wherein, the density of described green compact be the composition material except described fluid media (medium) greatest combined solid density at least 40% and at the most 70%.
14. according to the method described in any one of the preceding claims, and wherein, at least a portion of described green compact is the shape of cylindrical shape or rhombus.
15. according to the method described in any one of the preceding claims, comprising: make described green compact be subject to high temperature and high pressure to form described cutter elements.
16. 1 kinds of methods, described method comprises: provide according to the first lotion described in any one of the preceding claims; The second lotion is provided, and described the second lotion comprises the powder that can be sintered a part that forms cutter elements, and described the second lotion has the material composition different from the material composition of described the first lotion; Described the first lotion and described the second lotion are combined to form green compact, and described in sintering green compact with form cutter elements.
17. methods according to claim 16, wherein, described the second lotion comprises superhard particles, described superhard particles has the distribution of sizes different from the distribution of sizes of the superhard particles in described the first lotion.
18. according to the method described in claim 16 or 17, and wherein, described the second lotion comprises the superhard particles content different from the superhard particles content of described the first lotion.
19. methods according to claim 16, wherein, described the second lotion does not have superhard particles.
20. according to the method described in any one of the preceding claims, wherein, in described superhard particles at least some is arranged to be encapsulated in bead.
21. methods according to claim 20, wherein, the volume of each bead is at least twice of the volume of described superhard particles.
22. according to the method described in claim 20 or 21, wherein, each bead comprise superhard particles, at least in part encapsulate described superhard particles in seal district and encapsulate at least in part the outer encapsulating district that seals district in described; In described, seal district and there is the obviously larger wearability than described outer encapsulating district.
23. methods according to claim 22, wherein, the volume of sealing district in described be described bead volume at least 20%.
24. according to the method described in any one of the preceding claims, and wherein, described cutter elements is for piercing the drill bit on ground.
25. according to the method described in any one in claim 1 to 23, and wherein, described cutter elements is for saw blade.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161557790P | 2011-11-09 | 2011-11-09 | |
| GB1119329.9 | 2011-11-09 | ||
| US61/557,790 | 2011-11-09 | ||
| GBGB1119329.9A GB201119329D0 (en) | 2011-11-09 | 2011-11-09 | Method of making cutter elements,cutter element and tools comprising same |
| PCT/EP2012/072148 WO2013068469A1 (en) | 2011-11-09 | 2012-11-08 | Method of making cutter elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104010751A true CN104010751A (en) | 2014-08-27 |
Family
ID=45421497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280063194.9A Pending CN104010751A (en) | 2011-11-09 | 2012-11-08 | Method of making cutter elements |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140298730A1 (en) |
| EP (1) | EP2776191A1 (en) |
| KR (1) | KR20140085594A (en) |
| CN (1) | CN104010751A (en) |
| GB (2) | GB201119329D0 (en) |
| WO (1) | WO2013068469A1 (en) |
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| CN105598454A (en) * | 2015-11-25 | 2016-05-25 | 宁波渝鑫金属粉末科技有限公司 | Preparation method of powder injection molding tapper |
| CN106488895A (en) * | 2014-07-18 | 2017-03-08 | 六号元素(英国)有限公司 | The method manufacturing superhard article |
| CN111515400A (en) * | 2020-05-05 | 2020-08-11 | 泉州市华兴超硬工具有限公司 | Saw blade for stone cutting and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10507638B2 (en) * | 2015-03-17 | 2019-12-17 | Elementum 3D, Inc. | Reactive additive manufacturing |
| US11802321B2 (en) | 2015-03-17 | 2023-10-31 | Elementum 3D, Inc. | Additive manufacturing of metal alloys and metal alloy matrix composites |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB2496512B (en) | 2014-04-02 |
| WO2013068469A1 (en) | 2013-05-16 |
| KR20140085594A (en) | 2014-07-07 |
| EP2776191A1 (en) | 2014-09-17 |
| GB201220122D0 (en) | 2012-12-26 |
| GB201119329D0 (en) | 2011-12-21 |
| US20140298730A1 (en) | 2014-10-09 |
| GB2496512A (en) | 2013-05-15 |
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