CN111394635B - Nonmagnetic hard alloy for instrument shaft and preparation method thereof - Google Patents
Nonmagnetic hard alloy for instrument shaft and preparation method thereof Download PDFInfo
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- CN111394635B CN111394635B CN202010374423.5A CN202010374423A CN111394635B CN 111394635 B CN111394635 B CN 111394635B CN 202010374423 A CN202010374423 A CN 202010374423A CN 111394635 B CN111394635 B CN 111394635B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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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
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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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
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/042—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling using a particular milling fluid
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
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Abstract
The invention discloses a nonmagnetic hard alloy for an instrument shaft and a preparation method thereof, wherein the hard alloy comprises the following raw materials in percentage by weight: WC powder: 86.5%, W powder: 1.6%, Ni powder: 11% of Cr3C2Powder: 0.4% -0.6%, Mo powder or MoC powder: 0.3 to 0.5 percent. The preparation method comprises the following steps: weighing raw materials, wet grinding, sieving, drying, sieving, adding a forming agent, mixing, extruding and forming, removing the forming agent, sintering, carrying out physical detection, carrying out appearance inspection to obtain a product, and processing to obtain the instrument shaft. The invention not only can meet the requirement of the hardness of the instrument shaft, but also has no magnetism, so that the instrument can resist electromagnetic interference, has good working stability, and can normally work without being influenced in the environment with a large surrounding electric magnetic field.
Description
Technical Field
The invention relates to a hard alloy material, in particular to a nonmagnetic hard alloy for an instrument shaft and a preparation method thereof.
Background
The instrument transmission shaft is made of steel as a main material, and has the main defects of low hardness, low durability and limited application range due to the fact that the instrument transmission shaft belongs to a magnetic material and the accuracy of measurement is interfered and influenced under the existing electromagnetic environment.
The hard alloy material is an alloy material which is made of hard compounds of refractory metals and bonding metals through a powder metallurgy process. The hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, basically keeps unchanged even at the temperature of 500 ℃, and still has high hardness at the temperature of 1000 ℃. Cemented carbide materials are therefore the preferred material for making instrument drive shafts. The hard alloy material can well solve the problem of hardness of the transmission shaft of the instrument, but the problem of magnetism still exists, so that the hard alloy material loses magnetism, the transmission shaft of the instrument is made of the non-magnetic hard alloy material, the advantages of durability and electromagnetic interference resistance are achieved, the hardness is much higher than that of the transmission shaft, and the hard alloy material is an ideal material for manufacturing the transmission shaft of the instrument.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the non-magnetic hard alloy, the transmission shaft of the instrument prepared from the material not only can meet the requirement on the hardness of the transmission shaft of the instrument, but also has no magnetism, so that the instrument can resist electromagnetic interference and has good working stability, and the normal work can be not influenced in the environment with a large surrounding electric magnetic field.
A non-magnetic hard alloy for an instrument shaft is characterized in that: comprises the following raw materials in percentage by weight:
the WC powder requires: fsss particle size: 2-4u, carbon content: 5.91-5.95 percent.
The requirements of the W powder are as follows: fsss particle size: 2-4 u.
The Ni powder requires: fsss particle size: 1.5-2.5 u.
The Cr is3C2Powder requirements are as follows: fsss particle size: 1-2 u.
The Mo powder and the MoC powder are required: fsss particle size: 1-2 u.
The non-magnetic hard alloy for the instrument shaft has the following physical property requirements:
porosity: a is less than or equal to 02/B02/C00
Density: 14.5g/cm3
Magnetic force: 0
Bending resistance: more than 4000N/mm2
Hardness: HRA 89-90.
The invention also provides a preparation method of the nonmagnetic hard alloy for the instrument shaft, which comprises the following steps:
step 1, weighing the raw materials according to the weight percentage;
step 2, mixing the raw materials and carrying out wet grinding;
step 3, sieving;
step 4, drying and sieving;
step 5, adding a forming agent for mixing;
step 6, extrusion forming;
step 7, removing the forming agent;
step 8, sintering;
step 9, physical detection;
step 10, checking the appearance to obtain a product;
and 11, processing to obtain the instrument transmission shaft.
In the step 2, when wet grinding is carried out, the added wet grinding agent is alcohol.
In step 9, the physical detection is to detect the magnetism, the gap, the density, the strength and the hardness of the material.
In step 10, the shape detection is to detect roundness, outer diameter and length.
The invention has the beneficial effects that:
the hard alloy provided by the invention has high hardness, is a preferable material for manufacturing the instrument shaft, has no magnetism, and the manufactured instrument shaft has the advantages of durability and electromagnetic interference resistance. Compared with common materials, the material provided by the invention has the advantages of electromagnetic interference resistance, good working stability, no influence on normal work in the environment with a large electric magnetic field around and wide application range. The instrument shaft has longer working time, and the durable time of the instrument shaft is more than several times of the working time of common materials.
Drawings
FIG. 1 is a flow chart of the manufacturing process of the present invention.
Detailed Description
The invention is explained in detail in the following with reference to the figures in particular embodiments:
example 1
This example illustrates a total weight of 100 kg:
step 1, weighing raw materials:
the WC powder requirement is as follows: fsss particle size: 2-4u, carbon content: 5.91-5.95%;
the requirement of W powder: fsss particle size: 2-4 u;
the requirement of Ni powder: fsss particle size: 1.5-2.5u, wherein the Ni powder is preferably Canadian nickel powder;
Cr3C2powder requirements are as follows: fsss particle size: 1-2 u;
mo powder requirement: fsss particle size: 1-2 u;
step 2, mixing the raw materials, and then adding a wet grinding agent to carry out wet grinding (such as alcohol);
step 3, sieving;
step 4, sieving again after drying;
step 5, adding a forming agent for mixing;
step 6, extrusion forming;
step 7, removing the forming agent;
step 8, sintering;
step 9, physical detection; detecting whether the magnetic force, the gap, the density, the strength and the hardness of the material meet the requirements, wherein the physical property requirements are as follows:
porosity: a is less than or equal to 02/B02/C00
Density: 14.5g/cm3
Magnetic force: 0
Bending resistance: more than 4000N/mm2
Hardness: HRA 89-90;
step 10, checking the appearance to obtain a product, and checking the roundness, the outer diameter and the length of the product;
and 11, processing to obtain the instrument transmission shaft.
Example 2
This example is essentially the same as example 1 except that the Mo powder is replaced with MoC powder.
Example 3
This example is substantially the same as example 1, except that the raw materials were weighed as follows:
example 4
This example is substantially the same as example 1, except that the raw materials were weighed as follows:
example 5
This example is substantially the same as example 1, except that the raw materials were weighed as follows:
finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (4)
1. A non-magnetic hard alloy for an instrument shaft is characterized in that: the composite material consists of the following raw materials in percentage by weight:
86.5% of WC powder, Fsss particle size: 2-4 μm, carbon content: 5.91-5.95%;
1.6% of W powder, Fsss particle size: 2-4 μm;
11% of Ni powder, Fsss particle size: 1.5-2.5 μm;
Cr3C20.4% -0.6% of flour, Fsss particle size: 1-2 μm;
0.3% -0.5% of Mo powder or MoC powder, and the particle size of Fsss: 1-2 μm;
the non-magnetic hard alloy for the instrument shaft has the following physical property requirements:
porosity: a is less than or equal to 02/B02/C00
Density: 14.5g/cm3
Magnetic force: 0
Bending resistance:>4000N/mm2
hardness: HRA 89-90.
2. A method for preparing the nonmagnetic cemented carbide for an instrument shaft according to claim 1, wherein: the method comprises the following steps:
step 1, weighing the raw materials according to the weight percentage;
step 2, mixing the raw materials and carrying out wet grinding;
step 3, sieving;
step 4, drying and sieving;
step 5, adding a forming agent for mixing;
step 6, extrusion forming;
step 7, removing the forming agent;
step 8, sintering;
step 9, physical detection;
step 10, checking the appearance to obtain a product;
and 11, processing to obtain the instrument shaft.
3. The method for preparing a nonmagnetic cemented carbide for an instrument shaft according to claim 2, wherein: in the step 2, when wet grinding is carried out, the added wet grinding agent is alcohol.
4. The method for preparing a nonmagnetic cemented carbide for an instrument shaft according to claim 2, wherein: in step 9, physical detection is to detect the magnetism, the gap, the density, the strength and the hardness of the material, and in step 10, shape detection is to detect the roundness, the outer diameter and the length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010374423.5A CN111394635B (en) | 2020-05-06 | 2020-05-06 | Nonmagnetic hard alloy for instrument shaft and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010374423.5A CN111394635B (en) | 2020-05-06 | 2020-05-06 | Nonmagnetic hard alloy for instrument shaft and preparation method thereof |
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| CN111394635B true CN111394635B (en) | 2021-10-08 |
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| CN101050123A (en) * | 2007-05-23 | 2007-10-10 | 济南大学 | Method for preparing clad material of hard alloy in solidness phase of composite ceramic |
| CN101205584A (en) * | 2007-05-14 | 2008-06-25 | 横店集团东磁股份有限公司 | Non-magnetic hard alloy with high hardness, high strength and low cost |
| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN102418024A (en) * | 2011-11-25 | 2012-04-18 | 四川科力特硬质合金股份有限公司 | WCNR carbide alloy and preparation method thereof |
| CN102517484A (en) * | 2011-12-26 | 2012-06-27 | 四川科力特硬质合金股份有限公司 | N300 hard alloy and preparation method thereof |
| CN105274414A (en) * | 2014-07-16 | 2016-01-27 | 匡永刚 | Non-magnetic hard alloy and preparation method thereof |
| CN109306423A (en) * | 2018-10-23 | 2019-02-05 | 株洲市超宇实业有限责任公司 | A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method |
| CN109652702A (en) * | 2017-10-12 | 2019-04-19 | 牛金生 | A kind of WC-10Co-0.6Cr3C2 hard alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109496238A (en) * | 2016-06-23 | 2019-03-19 | 山特维克海博锐股份有限公司 | Corrosion-resistant and antifatigue hard alloy process the Line tool |
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- 2020-05-06 CN CN202010374423.5A patent/CN111394635B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4852608A (en) * | 1971-11-08 | 1973-07-24 | ||
| CN1470665A (en) * | 2003-04-30 | 2004-01-28 | 横店集团东磁股份有限公司 | Nonmagnetic hard alloy and preparing method thereof |
| CN101205584A (en) * | 2007-05-14 | 2008-06-25 | 横店集团东磁股份有限公司 | Non-magnetic hard alloy with high hardness, high strength and low cost |
| CN101050123A (en) * | 2007-05-23 | 2007-10-10 | 济南大学 | Method for preparing clad material of hard alloy in solidness phase of composite ceramic |
| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN102418024A (en) * | 2011-11-25 | 2012-04-18 | 四川科力特硬质合金股份有限公司 | WCNR carbide alloy and preparation method thereof |
| CN102517484A (en) * | 2011-12-26 | 2012-06-27 | 四川科力特硬质合金股份有限公司 | N300 hard alloy and preparation method thereof |
| CN105274414A (en) * | 2014-07-16 | 2016-01-27 | 匡永刚 | Non-magnetic hard alloy and preparation method thereof |
| CN109652702A (en) * | 2017-10-12 | 2019-04-19 | 牛金生 | A kind of WC-10Co-0.6Cr3C2 hard alloy |
| CN109306423A (en) * | 2018-10-23 | 2019-02-05 | 株洲市超宇实业有限责任公司 | A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method |
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| CN111394635A (en) | 2020-07-10 |
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