CN105369103B - Preparation method for ultrafine-grained hard alloy striping and slitting tool - Google Patents
Preparation method for ultrafine-grained hard alloy striping and slitting tool Download PDFInfo
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Abstract
The invention discloses a preparation method for an ultrafine-grained hard alloy striping and slitting tool, and belongs to the technical field of hard alloy tools. The preparation method for the ultrafine-grained hard alloy striping and slitting tool, which is disclosed by the invention, comprises the following steps: (1) material preparation: striping and slitting tool materials are prepared according to the components of the materials; (2) the mixed materials are grinded and dried, and then rotationally distributed and pressed into blanks, the rotational material distribution is carried out by virtue of a rotary-disc material distribution device, and the rotary-disc material distribution device comprises a disc, an outer circular ring, an inner circular ring, a central circular ring, a first cushion block, a second cushion block and a rotary base; and (3) after the blanks are formed by pressing, a sintering procedure of powder metallurgy is carried out, and then cooling is carried out after completion of the sintering. According to the invention, a high-performance high-accuracy slitting and shearing tool can be produced, the tool is high in hardness, strength, wear resistance and toughness, and the quality and the comprehensive use performance of the tool occupy domestic leading positions.
Description
Present patent application is for Application No.：2014101614797 divisional application, the applying date of original application
For：On April 21st, 2014, invention and created name is：A kind of high-performance superfine cemented carbide new material slitting carving knife.
Technical field
The present invention relates to carbide tool technical field, more particularly, it relates to a kind of ultra-fine cemented carbide slitting
The preparation method of carving knife, is suitable for lithium electricity industry, metallic film, press-packaging industry numerical control of machine tools shearing tool.
Background technology
Since new century, with the fast development of China's manufacturing industry, domestic numerical control equipment starts to enter in a large number with streamline
Every field, a sharp contradiction emerges quickly --- advanced equipment, with less than advanced domestic machinery cutter, no
Foreign knife must be unworthy of.International mould and five metals plastic industry association of business suppliers secretary-general Luo Baihui represent, high-quality carbide cutting
Main force cutter of the cutter needed for China has become processing enterprise, is widely used in automobile and parts production, mould
The heavy industry such as manufacture, Aero-Space field, but cutter enterprise of China produces high-speed steelknife blindly, in large quantities and some are low
Shelves standard cutter, needed for percent saturation of market and enterprise are not accounted for completely, finally with high added value, high-tech content
Hand over overseas enterprise in middle and high end cutter market.In developed country, current carbide tool has accounted for the leading position of cutter,
Proportion is up to 70%, and high-speed steel tool is just reduced with annual 1%～2% speed, and proportion is reduced to less than 30%.And
China, has data to show, the current annual sales amount of domestic cutter is about 14,500,000,000 yuan, wherein shared by high-quality carbide tool
Proportion less than 25%, but the high-quality carbide tool needed for domestic manufacturing industry has accounted for more than the 50% of cutter market,
This blindness production seriously can not meet the domestic manufacturing industry demand growing to high-quality carbide tool, so as to shape
Into the vacuum state of middle and high-end market, finally occupied by overseas enterprise.Except middle and high-end market is blank, China's cutter manufacture is looked forward to
Industry also generally existing added value of product is low, and traditional processing mode mutually disconnects with the market demand of personalization, raw material heat treatment
Technical merit is low, the problems such as the wasting of resources.
Although China lithium electricity industry had in recent years a development advanced by leaps and bounds, generally existing is of poor quality and high cost is asked
Topic.It is also to lead using the kerf quality of various steel part cutters generation and to the quality problems subsequently brought in addition to quality of materials
Cause the key factor of overall industry poor quality.Low production efficiency, poor product quality, profit are thin, and future brings existence to industry
With development crisis.Thus, many producers of lithium electricity industry and coloured film cutting attempt to change the status quo, the external cutting of numerous and confused import
Cutter, some import cutters and original home equipment are not matched, while to repair knife extremely difficult and expensive the later stage, some
Producer also has to abandon import cutter, is continuing with high-speed steel tool.
In recent years, domestic some cutter producers also attempted to develop hard alloy wolfram steel, but due to a lack of technology and key
Professional, at present can only the common carbide tool of Development and Production, because cutting edge quality has high demands, difficulty of processing is big, general
Logical hard alloy grain size is difficult to meet cutting blade processing request, it is impossible to make the ultra-fine cemented carbide material knife of high-quality
Tool.
With regard to ultra-fine cemented carbide material cutter, especially from ultra-fine grain hard carbide WC and binding metal Co
The cutter of powder manufacture, its crucial technological difficulties is following several respects：(1) due to the irrationality of dispensing, ingredient groups are caused
The bad hole for bringing of dispersion for dividing and Co distributed mutuallies inequality problem, so as to high-quality compound cannot be produced；(2) it is being pressed into base
The cloth material process for carrying out before is unreasonable, and existing cloth process typically rolls platen press using static, will compound pour cutter into
In forming tank, with steel ruler the compound in cutter forming tank is carried out coming and going and roll pressure, so as to reach floating effect, but it is this
Static pressure of rolling can cause cloth uneven, poor so as to produce green density, it is impossible to ensure the difference in height of cutter blank each point after sintering
Between 0.2～0.5mm, final products are caused to produce hidden crackle and layering.Based on the problems referred to above, cause of the prior art super
Fine grained cemented carbide material cutter combination property is poor.
By patent retrieval, with regard to related art scheme is disclosed in Powder metallurgy tool prior art, such as China is special
Sharp application number：201310550868.4, the applying date：2013-11-09, invention and created name is：A kind of high rigidity super abrasive powder
Metallurgical cutter and preparation method thereof, this application case is related to a kind of high rigidity super abrasive Powder metallurgy tool, by following weight portion
Raw material is made：Boron nitride 70-72, boron 1-2, aluminum 3-4, bortz powder 9-12, ferrum 20-21, cobalt 1-2, tungsten 4-5, Graphene 1-2,
Ta2O5 1-2、Mn2O32-3, calcium sulfide 1-2, hard acid acid zinc 2-3, dispersion phase 2-3；The dispersion phase by following weight portion original
Material is made：Iron powder 30-40, lead sulfate 1-2, iron chloride 1-2, feldspar in powder 2-3, Actinolitum 5-6, magnesium sulfate 2-3, nano-silica
SiClx 1-2, N660 white carbon black 2-3, MTES 1-2；Preparation method is by iron powder, lead sulfate, iron chloride, potassium feldspar
Powder, Actinolitum, magnesium sulfate mixing, grind to form 200-300 mesh powder, are subsequently adding MTES mix homogeneously,
Blank is pressed under 10-15Mpa, then, 3-4 hours is calcined at sending into 920-950 DEG C, after cooling, be ground into 300-400 mesh powder
End, mixes with other residual componentss, is heated to 60-70 DEG C, and 1-2 hours are stirred under 1200-1500 rev/min, obtains final product.This application
Dispensing in case is unreasonable, it is impossible to ensure Co distributed mutuallies inequality problem.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome the Co distributed mutuallies of ultra-fine cemented carbide material cutter in prior art uneven, and
The uneven green density difference problem brought of cloth, the invention provides a kind of preparation of ultra-fine cemented carbide slitting carving knife
Method, using technical scheme, being capable of effectively solving is brought because wet-milling dispersion is bad from dispensing hole and Co phases
The problems such as skewness, so as to produce high-quality compound.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of high-performance superfine cemented carbide new material slitting carving knife of the present invention, slitting carving knife adopts powder smelting
Gold process is made, and each component of its raw material is constituted by following mass percent：
Preferably, each component of raw material is constituted by following mass percent：
Preferably, each component of raw material is constituted by following mass percent：
Preferably, each component of raw material is constituted by following mass percent：
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result：
(1) present invention effectively solving is brought because wet-milling dispersion is bad from dispensing hole and Co distributed mutuallies are unequal asks
Topic, so as to produce high-quality compound, produces high-performance and high accuracy cutting shearing tool, and cutter possesses high rigidity, high intensity, strong
Wear-resisting, good toughness, its quality and comprehensive performance occupy domestically leading status, suitable with same kind of products at abroad quality, but have
More preferable versatility and absolute price advantage.It is the product that can replace import slitting cutting tool and high-speed steel tool completely
Product, are also the product for possessing exploitation foreign market strength；
(2) slitting carving knife prepared by the present invention, its bending strength is more than 4000N/mm2, breaking resistance is more than
565000psi, non-compound carbon porosity is A02B00C00, and alloy mean grain size is less than 0.5 μm, the slitting cutting of the present invention
Knife can not only effectively solving slitting cutting product edge-curl phenomenon, while ensure otch without burr, without turned-down edge, service life is common
5-10 times of hard alloy, is tens times of high-speed steel, and price is lower than same kind of products at abroad by more than 50%.The technical products material
Material also can have the cutter instrument that coloured gold belongs to the industries such as ﹑ steel, leather, weaving, plastics, timber to use as production, future prospect
It is wide.
Description of the drawings
Fig. 1 is the main structure diagram of turntable distribution device of the present invention；
Fig. 2 is the overlooking the structure diagram of turntable distribution device of the present invention.
Label declaration in schematic diagram：1st, disk；2nd, outer toroid；3rd, interior annular；4th, central circular；5th, rotating base；51、
Rotary body；52nd, supporter；61st, the first cushion block；62nd, the second cushion block.
Specific embodiment
To further appreciate that present disclosure, with reference to embodiment, the invention will be further described.
Embodiment 1
A kind of high-performance superfine cemented carbide new material slitting carving knife of the present embodiment, the slitting carving knife adopts powder
Last metallurgical technology is made, and each component of its raw material is constituted by following mass percent：0.45%CT, 85.2%WC, 12.3%Co,
0.5%Vc, 0.8%Cr3C2, 0.7%TaC, 0.05% stearic acid.CT in the present embodiment refers to catechol, and WC refers to tungsten carbide
Powder, Co refers to cobalt powder, and Vc refers to vinylene carbonate, Cr3C2Refer to chromium carbide, TaC refers to ramet.
A kind of high-performance superfine cemented carbide new material slitting carving knife of the present embodiment, its step is：(1) dispensing：
The each component of slitting carving knife raw material is configured by said components；(2) compound is ground and is dried, rotated after being dried
Cloth is simultaneously pressed into base；(3) it is pressed into after base, carries out the sintering circuit of powder metallurgy, is cooled down after terminating.This reality
Apply the rotation cloth of step in example (2) carries out (as depicted in figs. 1 and 2) using rotating disk distribution device, the rotating disk distribution device bag
Disk 1, outer toroid 2, interior annular 3, central circular 4, the first cushion block 61, the second cushion block 62 and rotating base 5 are included, wherein, rotation
Base 5 includes rotary body 51 and supporter 52, and rotary body 51 is located at the top of rotating base 5, and supporter 52 is located at rotating base 5
Bottom, described disk 1 is located at the top of rotating base 5, and the lower surface center of disk 1 is provided with groove, above-mentioned rotary body 51
In the groove of embedded disk 1, rotary body 51 is the ball bearing of horizontal positioned, and supporter 52 is connected with the internal ring of ball bearing, circle
The rotary body 51 when rotating of disk 1 synchronizes rotation, and supporter 52 is motionless, and this rotation distributing mode causes cloth speed more
It is fast and cloth is uniform.The outer ring of interior annular 3 is provided with outer toroid 2, and the excircle diameter of interior annular 3 is equal to the inner circle of outer toroid 2
All diameters, the inner ring of interior annular 3 is provided with central circular 4, and the inner circumferential diameter of interior annular 3 is straight equal to the excircle of central circular 4
Footpath.3 piece of first cushion block 61, and the upper surface of outer toroid 2 are provided between outer toroid 2 and disk 1 higher than the upper table of interior annular 3
Face, is provided with 3 piece of second cushion block 62, and the upper surface of central circular 4 higher than the upper table of outer toroid 2 between central circular 4 and disk 1
Face so that the outer circumference surface of central circular 4, the inner peripheral surface of outer toroid 2 and the upper surface of interior annular 3 form cannelure, and three faces are formed
Cannelure be used for cloth when be put into compound, specifically when material is rolled, one side rotating circular disk 1, while in being propped up with steel ruler one end
Heart annulus 4 carries out rolling material, and such rotation is rolled material process and effectively avoids arch bridge effect, overcomes the irregular product of compacting product cloth
The problem of raw green density difference, makes the difference in height of cutter blank each point after sintering between 0.2～0.5mm, it is ensured that final products are not produced
The hidden crackle of life and layering.
The cloth rotating disk of innovative design in the present embodiment when in use, first selects set specification according to the specification of required blade
Disk 1, outer toroid 2, interior annular 3, central circular 4, the first cushion block 61 and the second cushion block 62, then first rotating base 5 erected
It is straight to place on the table, then the rotary body 51 of groove alignment rotating base 5 upper end the bottom of disk 1, that is, complete disk 1 with
The assembling of rotating base 5, is then placed on the center of disk 1 interior annular 3, subsequently places first outside the outer ring of interior annular 3
Cushion block 61, and the second cushion block 62 is placed in its inner ring, outer toroid 2 is then laid on the first cushion block 61, in the second cushion block 62
Upper placement central circular 4, i.e. assembling is finished.A rolling bearing is set as circumference midpoint, no matter dise knife diameter in the bottom centre of disk 1
How much, rotating one around circumference midpoint during cloth and enclose, each position of dise knife surface area once, cloth is overcome because ultra-fine
The irregular density contrast that produces of the little pressing fabric of material apparent density causes the hidden crackle of product and sintering warpage.
The present invention is according to powder metallurgical technique mode, selected ultra-fine grain hard carbide WC and binding metal Co powder, root
Add trace element as inhibitor (such as Vc, Cr according to condition3C2, Tac etc.), while adding activating substance (such as according to grinding mechanism
Stearic acid).Select ultrafine WC (BET ＞ 1.5m2/ g) and Co powder materials, and innovation improvement is carried out in dispensing, so as to improve point
Scattered ability, increases cobalt distributing homogeneity in WC；Addition lot of trace inhibitor, suppresses alloy grain to grow up；Obtain after sintering
The alloy material (common alloy grain degree is between 1.0 μm～5.0 μm) of mean grain size≤0.5 μm；Add a small amount of stearic acid to make
Wet grinding activating substance, improves the surface energy of powder particle, disperses when increasing powder wet grinding, the densification of WC particle when being conducive to sintering
Property reset.
It is total well known, in sintering process, because local carbon content or oxygen content are uneven, local sintering liquid phase can be produced
Point is different；If local carbon content is too high, there is ternary with the solid solution of WC (W, C, Co) under conditions of 1280 DEG C -1300 DEG C of Jing
After eutectic reaction, unnecessary carbon can also occur binary eutectic reaction at 1320 DEG C with cobalt；Liquid-phase sintering point is caused to reduce, relatively
Extend the liquid phase retention time, the solution modeling for tungsten carbide provides the excessive time and space；Too growing up for crystal grain is caused, is drawn
Play the fragility increase of product regional area, crackle and be also easy to produce even extension, this will largely effect on the bulk strength of product；If
Local too high oxygen level, product selective oxidation thing cannot be reduced under cryogenic, and residual oxide needs to consume part chemical combination
Carbon is reduced, and causes WC lattice defects, produces excess W2C；Under the conditions of into 1280 DEG C of -1300 DEG C of ternary eutectics, due to
Local chemical combination carbon amounts is not enough, affects ternary eutectic and amount of liquid phase, and the solution modeling of tungsten carbide and cobalt in liquid phase is completed too early,
Significantly shrink uneven to product formation, local does not complete pinch condition will cause a large amount of holes and cobalt segregation phenomena, formed
Cobalt pond, causing the fragility of product regional area increases, and the bulk strength for causing final products is substantially reduced.The present embodiment then passes through
Start with the configuration of raw material and in cloth homogenization, the material uniformity of strict control pressed compact, effectively solving is because of wet-milling dispersion
The problems such as bad hole for bringing and Co distributed mutuallies are uneven, so as to ensure sintering process in local carbon content homogenization.
The present embodiment overcomes conventional rigid alloy material and is difficult to, with high rigidity, high intensity and strong toughness, adopt
With the technical scheme of the present embodiment, the material capability requirement of lithium electricity industry non-ferrous metal film dividing cutter product is disclosure satisfy that.
The ultra-fine cemented carbide slitting slitting blade of the present embodiment be for modern machine be China or even international lithium electricity industry pole piece,
The applicable industries product that non-ferrous metal thin film and press-packaging industry are developed.The product material performance of the present embodiment, cutter geometry
Design and manufacture machined parameters have met or exceeded similar products at home and abroad level.Table 1 be the product of the present embodiment 1 with it is present
The main cutting tools for cutting combination property synopsis that lithium electricity slitting blade is used on market.
The product of the present embodiment 1 of table 1 and common tungsten carbide tipped tool, high-speed steel tool combination property synopsis
It is comprehensive to adopt new material and unique Tool Design technology and processing technique, produce high-quality ultrafine gain size
Slitting carving knife, make the cutter be not only suitable for lithium electricity industry and non-ferrous metal film dividing equipment use, while can meet not
Same industry shearing rip cutting is required；And have an extraordinary cost performance.Its service life is respectively the nearly several times of common alloy cutter,
The decades of times of high-speed steel tool, only high 1 times and 4 times of price.
Embodiment 2
A kind of high-performance superfine cemented carbide new material slitting carving knife of the present embodiment, each component of its raw material is by such as
Lower mass percent composition：0.40%CT, 85.5%WC, 12.0%Co, 0.57%Vc, 0.7%Cr3C2, 0.8%TaC,
0.03% stearic acid.The other the same as in Example 1.
Embodiment 3
A kind of high-performance superfine cemented carbide new material slitting carving knife of the present embodiment, each component of its raw material is by such as
Lower mass percent composition：0.50%CT, 85.0%WC, 12.5%Co, 0.4%Vc, 0.9%Cr3C2, 0.63%TaC,
0.07% stearic acid.The other the same as in Example 1.
Claims (1)
1. a kind of preparation method of ultra-fine cemented carbide slitting carving knife, it is characterised in that its step is：
(1) dispensing：Each component according to slitting carving knife raw material is configured, and each component of its raw material presses following mass percent group
Into：CT 0.40～0.50%, WC 85.0～85.5%, Co 12.0～12.5%, Vc 0.4～0.6%, Cr3C20.7～
0.9%th, TaC 0.6～0.8%, stearic acid 0.03～0.07%；
(2) compound is ground and is dried, carry out rotating cloth and being pressed into base after being dried；
(3) it is pressed into after base, carries out the sintering circuit of powder metallurgy, is cooled down after terminating；
The rotation cloth of step (2) is carried out using rotating disk distribution device, and the rotating disk distribution device is when in use, first according to required knife
The specification of piece selects disk, outer toroid, interior annular, central circular, the first cushion block and second cushion block of set specification, then first will
Rotating base is vertically placed on the table, then the rotary body of the groove alignment rotating base upper end disk bottom, that is, complete
The assembling of disk and rotating base, is then placed on interior annular at disc centre, and the is subsequently placed outside the outer ring of interior annular
One cushion block, and the second cushion block is placed in its inner ring, then outer toroid is laid on the first cushion block, in placing on the second cushion block
Heart annulus, i.e. assembling are finished；
When material is rolled, one side rotating circular disk, while prop up central circular with steel ruler one end to carry out rolling material, turns during cloth around circumference
A dynamic circle, each position of dise knife surface area by cloth once；
Described rotating disk distribution device includes disk, outer toroid, interior annular, central circular, the first cushion block, the second cushion block and rotation
Base, wherein, rotating base includes rotary body and supporter, and rotation position is located at rotation in the top of rotating base, supporter
Base bottom, described disk is located at rotating base top, and lower disk surface center is provided with groove, and above-mentioned rotary body is embedding
Enter in disk groove, rotary body is the ball bearing of horizontal positioned, supporter is connected with the internal ring of ball bearing, and disk is being rotated
When rotary body synchronize rotation, and supporter is motionless；
Interior annular outer ring is provided with outer toroid, and the excircle diameter of interior annular is equal to the inner periphery diameter of outer toroid, interior annular
Inner ring is provided with central circular, and the inner circumferential diameter of interior annular is equal to the excircle diameter of central circular；
The first cushion block, and the upper surface of outer toroid are provided between outer toroid and disk higher than the upper surface of interior annular, center circle
The second cushion block, and central circular upper surface are provided between ring and disk higher than the upper surface of outer toroid so that outside central circular
Periphery, outer toroid inner peripheral surface and interior annular upper surface form cannelure, and the cannelure of three face formation is used to be put during cloth
Enter compound.
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| CN201510898415.XA CN105369103B (en) | 2014-04-21 | 2014-04-21 | Preparation method for ultrafine-grained hard alloy striping and slitting tool |
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| CN201510898415.XA CN105369103B (en) | 2014-04-21 | 2014-04-21 | Preparation method for ultrafine-grained hard alloy striping and slitting tool |
| CN201410161479.7A CN103898388B (en) | 2014-04-21 | 2014-04-21 | A kind of high-performance superfine cemented carbide new material divides bar carving knife |
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| CN201410161479.7A Division CN103898388B (en) | 2014-04-21 | 2014-04-21 | A kind of high-performance superfine cemented carbide new material divides bar carving knife |
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| CN105195731A (en) * | 2015-09-09 | 2015-12-30 | 苏州晓谕精密机械股份有限公司 | Hard alloy material for rack |
| CN105950938B (en) * | 2016-05-30 | 2017-11-24 | 马鞍山市恒利达机械刀片有限公司 | A kind of processing method of high-performance carbide new material slitting carving knife |
| CN106002131B (en) * | 2016-05-30 | 2019-10-18 | 马鞍山市恒利达机械刀片有限公司 | A kind of embedded alloy high-performance shearing dise knife and its processing method |
| CN107699766A (en) * | 2017-10-19 | 2018-02-16 | 成都壹佰科技有限公司 | A kind of formula of carbide cutter tool head material and preparation method thereof |
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| CN102974871A (en) * | 2012-11-27 | 2013-03-20 | 深圳市金洲精工科技股份有限公司 | Substrate for processing cutter and manufacturing method of substrate and drill bit using substrate |
| CN103362445A (en) * | 2012-04-10 | 2013-10-23 | 吴庆华 | Technology for preparing diamond sandwich type hard alloy mine rock drilling blade |
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| JPH10259433A (en) * | 1996-10-16 | 1998-09-29 | Mitsubishi Materials Corp | Production of hyperfine-grained tungsten carbide base sintered hard alloy having high strength |
| CN101629263B (en) * | 2009-08-06 | 2011-11-02 | 江西稀有稀土金属钨业集团有限公司 | Ultrafine cemented carbide and preparation method and application thereof |
| CN101812621A (en) * | 2010-04-22 | 2010-08-25 | 株洲硬质合金集团有限公司 | Submicron hard alloy and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362445A (en) * | 2012-04-10 | 2013-10-23 | 吴庆华 | Technology for preparing diamond sandwich type hard alloy mine rock drilling blade |
| CN102974871A (en) * | 2012-11-27 | 2013-03-20 | 深圳市金洲精工科技股份有限公司 | Substrate for processing cutter and manufacturing method of substrate and drill bit using substrate |
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