CN1575891A - Method for making a blade and blade manufactured thereby - Google Patents

Method for making a blade and blade manufactured thereby Download PDF

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Publication number
CN1575891A
CN1575891A CNA2004100069056A CN200410006905A CN1575891A CN 1575891 A CN1575891 A CN 1575891A CN A2004100069056 A CNA2004100069056 A CN A2004100069056A CN 200410006905 A CN200410006905 A CN 200410006905A CN 1575891 A CN1575891 A CN 1575891A
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CN
China
Prior art keywords
blade
weight
powder
powders
proportion
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.)
Pending
Application number
CNA2004100069056A
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Chinese (zh)
Inventor
草彅良太
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ping Jingming
Original Assignee
Ping Jingming
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Filing date
Publication date
Application filed by Ping Jingming filed Critical Ping Jingming
Publication of CN1575891A publication Critical patent/CN1575891A/en
Pending legal-status Critical Current

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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
    • B22F3/12—Both compacting and sintering
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B25/00—Hand cutting tools involving disc blades, e.g. motor-driven

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Knives (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

The present invention provides a blade material and a manufacturing method thereof adapted to maintain high wear resistance, high hardness, and relatively small specific gravity by using light alloy having a high hardness. A method for making a blade and blade manufactured thereby according to the present invention comprises the steps of preparing a powder mixture having 10-90 weight % of a first matter and 10-90 weight % of a second matter out of a total of 100 weight %, wherein the first matter is vanadium carbide (VC) having seven or less specific gravity, and the second matter is Titanium (Ti) or Titanium (Ti) alloy powder having seven or less specific gravity. A molded material is then obtained by packing the powder mixture into a mold and then pressing it. Finally, the molded material is sintered at below 1500 DEG C., wherein the molded and sintered material has a hardness equal to or larger than HRA60 and seven or less specific gravity.

Description

Be used to make the method for blade and by the blade of its manufacturing
Technical field
The present invention relates to cook with the blade of cutter or comprise the blade of circular different shape, more particularly, relate to the blade material that constitutes by light-alloy with high rigidity, and manufacture method.
Background technology
In the scraper (razor) of culinary art with cutter, universal cutter, circular rotating knife and different shape, blade (cutter) at first is processed by punching press one rolled steel plate usually.Then, this steel plate is heat-treated and cure process, to form blade.
The desired primary characteristic of conventional blades is to continue machinability.In order to realize this characteristic, implemented a kind of method, to increase the hardness of this blade material.Yet this method has a shortcoming, and promptly hardness and the fragility at Quenching Treatment process medium carbon steel all increases.
In addition, form big proportion according to it, make that the use of this powder sintered blade is limited with 10-16 by the powder sintered blade that tungsten carbide (WC) powder and cobalt (Co) powder are made.
Summary of the invention
Embodiments of the invention provide a kind of light-alloy that is suitable for having by use high rigidity to keep high-wearing feature, high rigidity and low-gravity blade material and manufacture method thereof.
In a preferred embodiment of the invention, a kind of method that is used for making blade may further comprise the steps: preparation has the mixture of powders that gross weight at its 100 weight % accounts for first material of 10-90 weight % and accounts for second material of 10-90 weight %, wherein, described first material is that proportion is 7 or less than 7 vanadium carbide (VC), and described second material is that proportion is 7 or less than 7 titanium (Ti) or titanium (Ti) alloy powder.Then, by also suppressing it then obtains moulding material in the mould that described mixture of powders is packed into.At last, at the described moulding material of sintering below 1500 ℃, wherein said material molded and sintering has more than or equal to the hardness of HRA60 and has 7 or less than 7 proportion.
Description of drawings
In order to understand character of the present invention and purpose more fully, can be with reference to the detailed description of carrying out below in conjunction with accompanying drawing, wherein:
Fig. 1 is the stereogram by the circular shear blade of the method manufacturing that is used to make blade according to an embodiment of the invention;
Fig. 2 is the cross-sectional view of the blade of Fig. 1.
The specific embodiment
1 and 2 pair of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Vanadium carbide (VC) is as the main material of the blade in the embodiment of the invention.Hardness ratio with VC of Vickers microhardness (micro-vickers hardness) HV=2600 has the hardness height of the conventional powder sintering blade material tungsten carbide (WC) of Vickers microhardness HV=1780.Therefore, when forming its proportion according to it and be 5 to 6, VC-titanium (Ti) sintered body or VC-Ti alloy are preferably used as the key component of this blade.The proportion of this sintered body be about rate of specific gravity be 10-16 high rigidity WC-Co alloy proportion half or 1/3rd.
When other conventional carbon steel blade was quenched, it was maximum that hardness is restricted to HV-820HRA84, and proportion is about 8.5.WC-Co alloy with high rigidity comprises with HV1800 (HRA92) for its maximum be about 15 proportion.Yet main material VC of the present invention has very high hardness HV2600 and is about 7 light proportion, thereby is fit to form a kind of blade material of lightweight high rigidity.
The following describes manufacture method according to the circular shear blade of the embodiment of Fig. 1 and 2.
Be 7 or become to account for first material of 10-90 weight % (percentage by weight) less than 7 VC powder preparation with proportion.Be 7 or be prepared into second material that accounts for 10-90 weight % with proportion less than 7 Ti or Ti alloy powder.Mix first and second materials have 100 weight % with formation mixture of powders then.
Preparing VC with 10-90 weight % is that then its wearability or hardness reduce because if VC content is 10 or less than 10 weight % in the mixture of powders total amount.If VC content is above 90 or greater than 90 weight %, then the fragility of VC is owing to high rigidity increases.
The mixture of powders of VC (first material) and Ti powder or Ti alloy powder (second material) is packed in the mould of the shape of wanting, and at every square centimeter of (cm 2) stand press forming under the pressure of 10t, thus moulding material obtained.
This moulding material is taken out from mould, and in vacuum drying oven at 1500 ℃ or more below the low temperature, preferably carrying out sintering below 1300 ℃, to obtain circular shear blade shown in Figure 1.
With reference to Fig. 1 and 2, be installed in rotation on the rotating shaft of machine as the blade of rotary turnplate blade, be formed with a patchhole (1) that inserts this rotating shaft therein.One planar portions (3) is formed with a desirable thickness by this planar portions of grinding.Neighboring by this planar portions of grinding (3) forms a neighboring blade part (2).
When VC accounted for 10 weight % with respect to the gross weight of this mixture of powders, the hardness that this material molded and sintering obtains was HRA60.
In another embodiment of the present invention, silver powder is joined in the mixture of powders of first and second materials as the 3rd material, be used to improve the antibiotic property and the wholesomeness of this blade.
When the light-alloy circular shear blade with high rigidity is used as the food cutting tool of meat, vegetables etc., require wholesomeness and lasting cutting ability.Therefore, for as the food cutting tool, silver is added in the light-alloy with high rigidity according to the present invention.
In case added silver in this blade, just can provide anti-microbial property for this blade by silver ion.Because silver ion has anti-microbial property and self-purification function,, also can keep sanitary condition even therefore this blade is stain by blood or animal flesh.
When silver (Ag) powder is mixed into VC-Ti powder or VC-Ti alloy powder,, then be difficult to obtain the antibacterial functions of silver ion if the weight % of Ag powder is 0.3 or less than 0.3.Yet if the weight % of Ag powder in mixture of powders is about 0.3 to 3.0, utilization silver wherein is from obtaining good antibacterial functions.In addition, the weight % of Ag powder is 3.0 or can not obtain better antibacterial functions greater than 3.0 o'clock, and only can increase manufacturing cost.
Simultaneously, in mould, load, suppress and during sintering, in the structure of this sintered body, form pore easily when mixture of powders.The amount that pore occurs changes with the pressure that is applied in the molding process on this mixture of powders usually.In addition, the pore in this sintered body reduces the actual density of this sintered body.Especially, when this pore was formed on the blade of this blade, the cutting power of this blade descended.
In the third embodiment of the present invention, add the Co powder of 2-10 weight % in the mixture of powders of in first embodiment or second embodiment, making, so that overcome above-mentioned shortcoming.This mixture of powders that is mixed with the Co powder is packed in the mould of the shape of wanting, and compacting, sintering under a sintering temperature then.
In case this Co powder adds in this mixture of powders and this mixture of powders is pressed and sintering, the Co powder just melts and liquefy under this sintering temperature at an easy rate, so that the acquisition high fluidity makes can flow in the pore that is formed on this sintered body inside, thereby this pore is full of.When Co was full of this pore, the pore that reduces the blade cut ability just was eliminated, and the density of sintered body structure also increases.
If the amount of Co is 2 or less than 2 weight %, the pore that then is formed at sintered body structure inside can not be filled fully.If the amount of Co surpasses 10 weight % or for higher, then fill the pore of sintered body inside after remaining Co can disperse unevenly therein, cause segregation (liquate).
In order to have in light weight and to have high rigidity, the first material VC is a main material of the present invention.The second material Ti is used for as this first corpuscle of whole mixture sintering as the binding material of first corpuscle (particle).
Like this, the Ti powder of second material can use cobalt (Co) to replace, with VC powder, molded and sintering, thereby obtain light-alloy blade with high rigidity.
Although the proportion of Co is bigger, be about 8.9, can its final proportion be reduced to less than 7 by adjusting with the mixing ratio of VC.Therefore, as this first embodiment, can effectively reduce the proportion of VC-Co alloy with high rigidity.
As from the foregoing, an advantage just is that the light-alloy blade can keep its high rigidity and low-gravity.
Another advantage is that blade of the present invention is compared with conventional blades has lower weight and identical volume, thereby helps to reduce raw material quantity, cost, and by making the product miniaturization help convenient the manufacturing.
Also have an advantage to be, because driving power of operating machines required in light weight and feasible reduces.

Claims (4)

1. method that is used to make blade may further comprise the steps:
Preparation has first material that accounts for 10-90 weight % in the gross weight of its 100 weight % and accounts for the mixture of powders of second material of 10-90 weight %, wherein, described first material is that proportion is 7 or less than 7 vanadium carbide (VC), and described second material is that proportion is 7 or less than 7 titanium (Ti) or titanium (Ti) alloy powder;
By also suppressing it then obtains moulding material in the mould that described mixture of powders is packed into; And
At the described moulding material of sintering below 1500 ℃, wherein said material molded and sintering has more than or equal to the hardness of HRA60 and has 7 or less than 7 proportion.
2. the method that is used to make blade according to claim 1 is characterized in that, also adds the silver powder of 0.3-3 weight % in described mixture of powders.
3. the method that is used to make blade according to claim 1 and 2 is characterized in that, also comprises the step of the cobalt powder that adds 2-10 weight % in described mixture of powders.
4. one kind by according to each described blade that is used to make the method manufacturing of blade of claim 1 to 3.
CNA2004100069056A 2003-07-28 2004-02-26 Method for making a blade and blade manufactured thereby Pending CN1575891A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030051950A KR100550235B1 (en) 2003-07-28 2003-07-28 Method for making a blade and Blade manufactured thereby
KR0051950/2003 2003-07-28

Publications (1)

Publication Number Publication Date
CN1575891A true CN1575891A (en) 2005-02-09

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CNA2004100069056A Pending CN1575891A (en) 2003-07-28 2004-02-26 Method for making a blade and blade manufactured thereby

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US (1) US20050025655A1 (en)
EP (1) EP1502967A1 (en)
JP (1) JP2005048276A (en)
KR (1) KR100550235B1 (en)
CN (1) CN1575891A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334042A (en) * 2013-06-20 2013-10-02 成都工业学院 Vanadium carbide based hard alloy
CN112643029A (en) * 2019-10-10 2021-04-13 银未来株式会社 Method for manufacturing silver sterilizing cutting tool

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100545749B1 (en) * 2003-10-27 2006-01-24 아키라 히라이 Multi-Layer Powder Sintering Tool Parts and Manufacturing Method Thereof
KR20050068506A (en) * 2003-12-30 2005-07-05 아키라 히라이 Method for making a blade and blade manufactured thereby
US20060185254A1 (en) * 2005-02-18 2006-08-24 Akira Hirai Titanium coated diamond containing edge material and method for manufacturing the same
KR20090102080A (en) * 2008-03-25 2009-09-30 가부시키가이샤 포에버 Blade using ultra-hard microscopic particles
JP3174409U (en) * 2011-11-29 2012-03-22 株式会社フォーエバー Blade with diamond particles
JP5987337B2 (en) * 2012-02-09 2016-09-07 セイコーエプソン株式会社 CUTTER, CUTTING DEVICE, RECORDING DEVICE, AND CUTTER MANUFACTURING METHOD
US10555863B2 (en) * 2013-03-15 2020-02-11 Jacob Randy Hall Cryotherapy compression system
CN105128040B (en) * 2015-09-29 2017-11-28 山西玉华再制造科技有限公司 Titanium alloy laser melting coating high speed food cutter head and manufacture method
CN112658248A (en) * 2020-12-07 2021-04-16 技锋精密刀具（马鞍山）有限公司 Mold for preparing circular blade and using method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334042A (en) * 2013-06-20 2013-10-02 成都工业学院 Vanadium carbide based hard alloy
CN112643029A (en) * 2019-10-10 2021-04-13 银未来株式会社 Method for manufacturing silver sterilizing cutting tool

Also Published As

Publication number Publication date
EP1502967A1 (en) 2005-02-02
KR20050013329A (en) 2005-02-04
KR100550235B1 (en) 2006-02-08
US20050025655A1 (en) 2005-02-03
JP2005048276A (en) 2005-02-24

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