CN111515401A - Hard alloy material for paper industry roller cutter, roller cutter blank preparation method and roller cutter blank - Google Patents
Hard alloy material for paper industry roller cutter, roller cutter blank preparation method and roller cutter blank Download PDFInfo
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- CN111515401A CN111515401A CN202010373727.XA CN202010373727A CN111515401A CN 111515401 A CN111515401 A CN 111515401A CN 202010373727 A CN202010373727 A CN 202010373727A CN 111515401 A CN111515401 A CN 111515401A
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- 239000000956 alloy Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 24
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 25
- 229910045601 alloy Inorganic materials 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 18
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 16
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 16
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 16
- 239000006229 carbon black Substances 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001238 wet grinding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 150000001247 metal acetylides Chemical class 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims description 5
- 238000009694 cold isostatic pressing Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- -1 sanitary towels Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/162—Machining, working after consolidation
-
- 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
-
- 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
-
- 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
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Nonmetal Cutting Devices (AREA)
Abstract
The invention discloses a hard alloy material for a paper industry roller cutter, a roller cutter blank preparation method and a roller cutter blank, wherein the hard alloy material comprises 87-90.5% of tungsten carbide powder, 0.5% of chromium carbide and 9-12.5% of metal cobalt powder by weight; wherein the tungsten carbide powder is tungsten carbide powder with the Fisher particle size of 1-1.2 mu; the hard alloy material prepared by the proportion has the sharpness and the continuity of the paper sanitary protective product roller cutter ring cutting production, not only has enough continuous ring cutting function, but also does not collapse due to the over-sharp cutter body, and avoids influencing the working efficiency of the cutter body.
Description
Technical Field
The invention relates to the technical field of alloy materials, in particular to a hard alloy material for a paper industry roller cutter, a roller cutter blank preparation method and a roller cutter blank.
Background
The paper rolling knife is a common knife used in paper production, and is used for forming and cutting various sanitary products such as sanitary towels, paper diapers and the like. The sharpness requirement of the roll knife is very high because the forming and cutting of the toilet paper require characteristics and the forming amount of one knife is more than ten million times. The sharpness of the roller cutter is related to the hardness of the alloy material adopted by the roller cutter, and if the hardness is too high, the roller cutter is easy to break; if the hardness is insufficient, the predetermined yield cannot be achieved, and the paper breakage is difficult, which affects the production efficiency.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention provides a cemented carbide material for a paper rolling cutter.
Further, the invention also provides a preparation method of the roller cutter blank for the hard alloy in the paper industry.
Further, the invention also provides a roller cutter blank prepared by the method.
In order to achieve the purpose, the invention adopts the technical means that:
the hard alloy for the paper rolling cutter comprises 87-90.5% of tungsten carbide powder, 0.5% of chromium carbide and 9-12.5% of metal cobalt powder by weight; the tungsten carbide powder is tungsten carbide powder with the Fisher particle size of 1-1.2 mu.
The tungsten carbide powder is 87-90 wt%, the chromium carbide is 0.5 wt%, the metal cobalt powder is 9-12 wt%, and the tantalum carbide is 0.5 wt%.
Further, vanadium carbide is also included, and the vanadium carbide accounts for 0.12-0.15% of the total amount.
Further, the tungsten powder or the carbon black is used for adjusting the total carbon content of the tungsten carbide powder to 5.90-6.20% and reach the specific total carbon content required by the production process.
Further, 89% of tungsten carbide powder, 0.5% of chromium carbide, 10% of metal cobalt powder and 0.5% of tantalum carbide; the vanadium carbide accounts for 0.12 to 0.15 percent of the total amount.
Further, the application also provides a method for preparing the roller cutter blank for the paper industry roller cutter, which comprises the following steps:
preparing materials: taking tungsten carbide powder, vanadium carbide, chromium carbide, metal cobalt powder and tantalum carbide according to the proportion;
wet grinding: putting the mixture into a wet grinder, adding alcohol for wet grinding to fully mix all metal carbides and enable the metal carbides to have metal activity;
and (3) precipitation: screening the mixture after wet grinding, precipitating and drying to obtain a hard alloy mixture;
and (3) granulating: adding a forming agent into the hard alloy slurry, and granulating and sieving to obtain a granulating mixture;
cold isostatic pressing: carrying out cold isostatic pressing on the granulation mixture to obtain a primary pressed compact;
preprocessing: preprocessing the primary pressed blank to a size suitable for clamping on a machine tool;
machining a preform: carving the prefabricated pressed blank into a preform of a roller cutter through a processing center;
and (3) sintering: and sintering and molding the preform in a sintering furnace to obtain the hard alloy roller cutter blank.
Further, in the step of batching, the method also comprises a step of adjusting the carbon content:
detecting the carbon content, adding tungsten powder or carbon black, and adjusting the total carbon content to 5.90-6.20% to reach the specific total carbon content required by the production process.
Further, the application also provides a roller knife blank for the paper industry roller knife, and the roller knife blank is prepared by adopting the method.
Compared with the prior art, the invention has the following beneficial effects:
1. the proportion of the metal cobalt powder is 9-12.5%, and by adopting the proportion, the sintered hard alloy can reach the hardness level of HRA 91.5-92, and the bending strength can reach 3000N/mm2-3500N/mm2(scale C).
2. The tungsten carbide powder adopts tungsten carbide powder with the Fisher particle size of 1-1.2 mu: the total carbon content is in the range of 5.90-6.20%, and by adding trace components of chromium carbide and vanadium carbide, tungsten carbide crystal grains can be prevented from growing (thickening) during sintering, so that the same effect as that of using finer tungsten carbide powder can be obtained after the hard alloy is sintered, the alloy can also reach very good porosity (compact level) under the condition of using common production equipment, the situation that the same level can be realized only by using an expensive pressure sintering furnace due to the adoption of tungsten carbide powder with finer Fisher granularity is avoided, and higher equipment cost is avoided.
3. And a small amount of tantalum carbide is added, so that the toughness of the alloy can be effectively improved, and the hard alloy has good flexibility suitable for the cutter when being processed into a roller cutter.
4. The hard alloy cutter material prepared by the proportion has special sharp and continuous toughness, and can ensure that a roller cutter blank after the hard alloy is sintered has good processing and grinding performance; the cutting tool has a continuous sharp state in the working process, cannot collapse due to over hardness and over sharpness, and cannot continuously work due to the fact that the cutting capability is influenced due to too flexibility.
5. Through reasonable proportioning, expensive raw materials and processing equipment are avoided, and the cost of the hard alloy material and the processing cost are more reasonable.
Detailed Description
The following examples are given to further illustrate the invention. It should be noted that the following examples are not to be construed as limiting the scope of the present invention, and that the skilled person would be able to make modifications and variations of the present invention without departing from the spirit and scope of the present invention.
Example 1:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89.5kg of tungsten carbide powder with the Fisher size of 1-1.2 mu, 0.5kg of chromium carbide and 10kg of metal cobalt powder, adding carbon black or tungsten powder, and adjusting the total carbon content of the tungsten carbide powder to 5.90-6.20% so as to enable the total carbon content to meet the process requirements of production equipment conditions.
Example 2:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89.5kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 10kg of metal cobalt powder and 0.12kg of vanadium carbide, adding carbon black or tungsten powder, and adjusting the total carbon content to 5.90-6.20%.
Example 3:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 10kg of metal cobalt powder, 0.5kg of tantalum carbide and 0.12kg of vanadium carbide, adding carbon black or tungsten powder, and adjusting the total carbon content to 5.90-6.20%.
Example 4:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 87kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 12kg of metal cobalt powder, 0.5kg of tantalum carbide and 0.12kg of vanadium carbide, and adding carbon black or tungsten powder to adjust the total carbon content to 5.90-6.20%.
Example 5:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 10kg of metal cobalt powder, 0.5kg of tantalum carbide and 0.15kg of vanadium carbide, adding carbon black or tungsten powder, and adjusting the total carbon content to 5.90-6.20%.
Example 6:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 88kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 11kg of metal cobalt powder, 0.5kg of tantalum carbide and 0.15kg of vanadium carbide, and adding carbon black or tungsten powder to adjust the total carbon content to 5.90-6.20%.
Example 7:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89.5kg of tungsten carbide powder with the Fisher particle size of 1-1.2 mu, 0.5kg of chromium carbide, 9.5kg of metal cobalt powder, 0.5kg of tantalum carbide and 0.12kg of vanadium carbide, adding carbon black or tungsten powder, and adjusting the total carbon content to 5.90-6.20%.
Comparative example 1:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 93.5kg of tungsten carbide powder with the Fisher particle size of 1.3-1.8 mu, 0.5kg of chromium carbide and 6kg of metal cobalt powder.
Comparative example 2:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 91.5kg of tungsten carbide powder with the Fisher particle size of 1.3-1.8 mu, 0.5kg of chromium carbide and 8kg of metal cobalt powder.
Comparative example 3:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89.5kg of tungsten carbide powder with the Fisher size of 1.3-1.8 mu, 0.5kg of chromium carbide and 10kg of metal cobalt powder.
Comparative example 4:
the alloy material for the paper industry roller knife comprises the following components in percentage by weight: 89kg of tungsten carbide powder with the Fisher particle size of 0.5-0.6 mu, 0.5kg of chromium carbide and 10kg of metal cobalt powder.
According to the formula proportion of the examples 1 to 7 and the comparative examples 1 to 4, the roller knife blank is prepared according to the following steps:
s1, taking tungsten carbide powder, vanadium carbide, chromium carbide, metal cobalt powder and tantalum carbide according to the proportion of each embodiment; detecting whether the total carbon content is between 5.90 and 6.20 percent, if the total carbon content is over 6.2 percent, adding tungsten powder for adjustment, and if the total carbon content is less than 5.9 percent, adding carbon black for adjustment, so that the total carbon content is kept between 5.90 and 6.20 percent, and the specific total carbon content required by the production process is achieved.
S2, adding the materials into a wet grinder, adding alcohol for wet grinding, and fully mixing the metal carbides and enabling the metal carbides to have metal activity; alcohol is added in the wet grinding step, so that the anti-oxidation effect can be achieved.
S3, discharging the mixture after wet grinding, and sieving with a-320 mesh sieve. After precipitation, the alcohol is removed to obtain an alcohol-containing precipitate.
And S4, putting the mixture containing the alcohol into a steam drying barrel, drying by vibration, recovering the alcohol, and removing the alcohol to obtain the hard alloy mixture to be dried.
And S5, adding a forming agent into the hard alloy mixture, and granulating and sieving to obtain a granulating mixture.
And S6, forming the granulating mixture by using a cold isostatic press to obtain a primary pressed compact.
And S7, preprocessing the primary pressed blank, and processing the primary pressed blank to a size suitable for clamping on a machine tool.
And S8, carving the prefabricated pressed blank into a preform of a roller knife through a machining center to form the shape of the roller knife.
And S9, detecting the geometric dimension of the preform to ensure that the preform reaches the theoretical dimension before pre-sintering so that the preform can shrink to the specified dimension after sintering. The detection items comprise: the outer diameter, inner diameter, height of the preform, the geometric position of the blade shape, the coordinate position of the mounting hole, and the integrity of the blade blank.
And S10, sintering the preform in a sintering furnace to obtain the required hard alloy roller cutter blank product.
S11, performing surface treatment on the roller cutter blank to remove attachments such as burr carbon black and the like generated in the sintering process, and eliminating stress to improve the use quality of the alloy.
The roller blade blanks prepared in examples 1 to 7 and comparative examples 1 to 4 were tested, and the test results were as follows:
from the above detection results, it can be seen that the addition of chromium carbide and vanadium carbide in examples 1 and 2 still provides good porosity when using relatively coarse tungsten carbide powder, but the toughness is slightly poor due to the absence of tantalum carbide, and can basically reach the required 1000 ten thousand times, and only a few of the tungsten carbide powder cannot reach the required requirements; in the embodiments 3, 5, 6 and 7, trace tantalum carbide is added on the basis of the embodiments 1 and 2, so that the toughness of the finished product is well improved, the processing frequency of the finished product is greatly increased and can reach more than 1200 ten thousand times; example 4 reduces the amount of tungsten carbide powder, increases the amount of cobalt powder, and reduces the hardness of the finished product slightly, which occasionally causes paper breakage; comparative example 4 because of using the thinner tungsten carbide powder, it is not suitable to adopt the ordinary vacuum furnace to sinter, will make its hole increase, need to adopt HIP (pressure furnace) hole can be qualified, but the apparatus is expensive; the alloy produced by adopting a common vacuum furnace is used for processing the sanitary towels, so that the quantity of the sanitary towels is unstable; the comparative examples 1 to 3 adopt thicker tungsten carbide powder, the tungsten carbide powder in the comparative example 1 has higher content and enough hardness, but the tungsten carbide powder has insufficient strength, is easy to collapse during processing and is not beneficial to alloy processing; in the comparative example 2, the content of the tungsten carbide powder is reduced, but the requirement of 1000 ten thousand times cannot be met, and gaps are easy to appear; comparative example 3 the chromium carbide was removed from comparative example 1, and the hardness was low, and the requirement of stable processing for more than 1000 ten thousand times was still not met.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered in the claims of the present invention.
Claims (8)
1. The hard alloy for the paper rolling cutter is characterized by comprising 87-90.5% of tungsten carbide powder, 0.5% of chromium carbide and 9-12.5% of metal cobalt powder by weight; the tungsten carbide powder is tungsten carbide powder with the Fisher particle size of 1-1.2 mu.
2. The cemented carbide for a paper mill roll cutter according to claim 1, further comprising tantalum carbide, the tungsten carbide powder being 87-90%, the chromium carbide being 0.5%, the metal cobalt powder being 9-12%, the tantalum carbide being 0.5% by weight.
3. The cemented carbide for a paper mill roll cutter according to claim 1 or 2, further comprising vanadium carbide in an amount of 0.12-0.15% of the total amount.
4. The cemented carbide for a paper mill roll cutter as claimed in claim 3, further comprising tungsten powder or carbon black for adjusting the total carbon content of tungsten carbide to 5.90-6.20%.
5. The hard alloy for the paper industry roller blade according to any one of claims 1 to 4, wherein the tungsten carbide powder is 89%, the chromium carbide is 0.5%, the metal cobalt powder is 10%, and the tantalum carbide is 0.5%; the vanadium carbide accounts for 0.12 to 0.15 percent of the total amount.
6. A method for preparing a roller cutter blank for a paper industry roller cutter is characterized by comprising the following steps:
preparing materials: taking tungsten carbide powder, vanadium carbide, chromium carbide, metal cobalt powder and tantalum carbide according to the proportion of any one of claims 1 to 5;
wet grinding: putting the mixture into a ball mill, adding alcohol for wet milling to fully mix all metal carbides and enable the metal carbides to have certain metal activity;
and (3) precipitation: screening the slurry subjected to wet grinding, precipitating and drying to obtain a hard alloy mixture;
and (3) granulating: adding a forming agent into the hard alloy mixture, and granulating and sieving to obtain a granulated mixture;
cold isostatic pressing: carrying out cold isostatic pressing on the granulation mixture to obtain a primary pressed compact;
preprocessing: preprocessing the primary pressed blank to a size suitable for clamping on a machine tool;
machining a preform: carving the prefabricated pressed blank into a preform of a roller cutter through a processing center;
and (3) sintering: and sintering and molding the preform in a sintering furnace to obtain the hard alloy roller cutter blank.
7. The method for preparing the carbon fiber reinforced plastic composite material as claimed in claim 6, wherein the step of preparing the material further comprises the step of adjusting the carbon content:
detecting the carbon content, adding tungsten powder or carbon black, and adjusting the total carbon content of the tungsten carbide to 5.90-6.20% to reach the specific total carbon content required by the production process.
8. A roller blade blank for a paper industry roller blade, characterized in that it is produced by the method of any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373727.XA CN111515401A (en) | 2020-05-06 | 2020-05-06 | Hard alloy material for paper industry roller cutter, roller cutter blank preparation method and roller cutter blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373727.XA CN111515401A (en) | 2020-05-06 | 2020-05-06 | Hard alloy material for paper industry roller cutter, roller cutter blank preparation method and roller cutter blank |
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|---|---|
| CN111515401A true CN111515401A (en) | 2020-08-11 |
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|---|---|---|---|
| CN202010373727.XA Pending CN111515401A (en) | 2020-05-06 | 2020-05-06 | Hard alloy material for paper industry roller cutter, roller cutter blank preparation method and roller cutter blank |
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| CN (1) | CN111515401A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176237A (en) * | 2020-09-07 | 2021-01-05 | 湖北金谷材料科技有限公司 | Hard alloy and preparation method thereof |
| CN112195387A (en) * | 2020-09-30 | 2021-01-08 | 昆山长鹰硬质材料科技股份有限公司 | Hard alloy, die-cutting knife roll hard alloy blank and preparation method of die-cutting knife roll hard alloy blank |
| CN114227147A (en) * | 2021-11-08 | 2022-03-25 | 成都美奢锐新材料有限公司 | Preparation method of blade special for cigar scissors or cigar knives and blade |
| CN114250428A (en) * | 2021-11-08 | 2022-03-29 | 成都美奢锐新材料有限公司 | Hard alloy material for cigar cutter and preparation method thereof |
| CN115896519A (en) * | 2022-11-16 | 2023-04-04 | 河南大地合金有限公司 | Method for preparing hard alloy from WC ultrafine powder and hard alloy |
| CN116083767A (en) * | 2022-11-01 | 2023-05-09 | 厦门通耐钨钢有限公司 | Tungsten carbide-based hard alloy and preparation method thereof |
| CN117684036A (en) * | 2024-02-04 | 2024-03-12 | 崇义章源钨业股份有限公司 | Superfine crystal hard alloy and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050211475A1 (en) * | 2004-04-28 | 2005-09-29 | Mirchandani Prakash K | Earth-boring bits |
| CN101824575A (en) * | 2010-05-27 | 2010-09-08 | 中南大学 | Ultrafine grain wolfram carbide/ cobalt hard alloy and preparation method thereof |
| CN202116006U (en) * | 2011-06-07 | 2012-01-18 | 河南中孚实业股份有限公司 | High-temperature thickener cleaning machine |
| CN103305741A (en) * | 2013-07-01 | 2013-09-18 | 长沙肯贝科技有限公司 | Hard alloy, hard alloy cutter bar and manufacturing method thereof |
| CN104439233A (en) * | 2014-12-15 | 2015-03-25 | 技锋精密刀具（马鞍山）有限公司 | Material for hard alloy cutting tool |
| US20170306456A1 (en) * | 2014-12-17 | 2017-10-26 | Kennametal Inc. | Cemented carbide articles and applications thereof |
| CN109321804A (en) * | 2018-10-17 | 2019-02-12 | 四川铭泰顺硬质合金有限公司 | It is a kind of for cutting the hard alloy cutter subject preparation method of carbon fibre composite |
| CN109396451A (en) * | 2018-12-20 | 2019-03-01 | 赣州海盛硬质合金有限公司 | A kind of production technology of machining hard alloy bar |
-
2020
- 2020-05-06 CN CN202010373727.XA patent/CN111515401A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050211475A1 (en) * | 2004-04-28 | 2005-09-29 | Mirchandani Prakash K | Earth-boring bits |
| CN101824575A (en) * | 2010-05-27 | 2010-09-08 | 中南大学 | Ultrafine grain wolfram carbide/ cobalt hard alloy and preparation method thereof |
| CN202116006U (en) * | 2011-06-07 | 2012-01-18 | 河南中孚实业股份有限公司 | High-temperature thickener cleaning machine |
| CN103305741A (en) * | 2013-07-01 | 2013-09-18 | 长沙肯贝科技有限公司 | Hard alloy, hard alloy cutter bar and manufacturing method thereof |
| CN104439233A (en) * | 2014-12-15 | 2015-03-25 | 技锋精密刀具（马鞍山）有限公司 | Material for hard alloy cutting tool |
| US20170306456A1 (en) * | 2014-12-17 | 2017-10-26 | Kennametal Inc. | Cemented carbide articles and applications thereof |
| CN109321804A (en) * | 2018-10-17 | 2019-02-12 | 四川铭泰顺硬质合金有限公司 | It is a kind of for cutting the hard alloy cutter subject preparation method of carbon fibre composite |
| CN109396451A (en) * | 2018-12-20 | 2019-03-01 | 赣州海盛硬质合金有限公司 | A kind of production technology of machining hard alloy bar |
Non-Patent Citations (2)
| Title |
|---|
| 周书助: "《硬质合金生产原理和质量控制》", 31 August 2014, 冶金工业出版社 * |
| 李沐山: "《八十年代世界硬质合金技术进展》", 31 August 1992, 《硬质合金》编辑部 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176237A (en) * | 2020-09-07 | 2021-01-05 | 湖北金谷材料科技有限公司 | Hard alloy and preparation method thereof |
| CN112195387A (en) * | 2020-09-30 | 2021-01-08 | 昆山长鹰硬质材料科技股份有限公司 | Hard alloy, die-cutting knife roll hard alloy blank and preparation method of die-cutting knife roll hard alloy blank |
| CN114227147A (en) * | 2021-11-08 | 2022-03-25 | 成都美奢锐新材料有限公司 | Preparation method of blade special for cigar scissors or cigar knives and blade |
| CN114250428A (en) * | 2021-11-08 | 2022-03-29 | 成都美奢锐新材料有限公司 | Hard alloy material for cigar cutter and preparation method thereof |
| CN116083767A (en) * | 2022-11-01 | 2023-05-09 | 厦门通耐钨钢有限公司 | Tungsten carbide-based hard alloy and preparation method thereof |
| CN115896519A (en) * | 2022-11-16 | 2023-04-04 | 河南大地合金有限公司 | Method for preparing hard alloy from WC ultrafine powder and hard alloy |
| CN117684036A (en) * | 2024-02-04 | 2024-03-12 | 崇义章源钨业股份有限公司 | Superfine crystal hard alloy and preparation method thereof |
| CN117684036B (en) * | 2024-02-04 | 2024-04-26 | 崇义章源钨业股份有限公司 | Superfine crystal hard alloy and preparation method thereof |
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