CN111020372B - Hard alloy - Google Patents
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- CN111020372B CN111020372B CN201911070292.5A CN201911070292A CN111020372B CN 111020372 B CN111020372 B CN 111020372B CN 201911070292 A CN201911070292 A CN 201911070292A CN 111020372 B CN111020372 B CN 111020372B
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- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 title abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052796 boron Inorganic materials 0.000 claims abstract description 17
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 17
- 239000011777 magnesium Substances 0.000 claims abstract description 17
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 17
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 16
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 15
- 239000010955 niobium Substances 0.000 claims abstract description 15
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 15
- 239000011574 phosphorus Substances 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 15
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 15
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 229910000531 Co alloy Inorganic materials 0.000 claims description 7
- 239000012300 argon atmosphere Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- -1 0.67 part of silicon Chemical compound 0.000 claims 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to a hard alloy which comprises the following components in parts by weight: 0.4-5 parts of carbon, 0.6-0.7 part of silicon, 0.2-0.3 part of vanadium, 0.5-0.8 part of boron, 0.1-0.2 part of antimony, 0.04-0.11 part of ytterbium, 1.6-2.8 parts of aluminum, 0.03-0.14 part of niobium, 1.03-1.22 parts of tin, 0.05-0.13 part of tantalum, 0.06-0.15 part of magnesium, 0.04-0.09 part of phosphorus, and the balance of iron and inevitable impurities. The beneficial effects are that: the hard alloy has good hardness, heat resistance and oxidation resistance, and can improve the high-temperature resistance, toughness and the like of the alloy tool; has excellent high temperature and corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a hard alloy.
Background
The steel bonded hard alloy (steel bonded alloy for short) is used as a novel engineering material, has the hardness and wear resistance of carbide and good mechanical property of steel, and is a tool material between the hard alloy and tool steel. The performance characteristics of the steel bonded alloy are that on the basis of keeping high hardness and wear resistance, the strength and toughness are greatly improved, the comprehensive performance is good, and the steel bonded alloy is suitable for being used under the condition of larger impact load.
The steel bonded alloy contains a large amount of high-hardness hard phases which are dispersed and distributed, so that the wear resistance of the steel bonded alloy can be close to that of high-cobalt hard alloy, but compared with the hard alloy, the steel bonded alloy has better toughness, low cost and wider application range; compared with high alloy die steel, the high alloy die steel has higher elastic modulus, wear resistance, compressive strength and bending strength.
Drill bits are one of the indispensable components in electric drills. The current drill bit materials are primarily cemented carbide and high speed steel. The hard alloy material has high hardness and wear resistance, but in the processing process, the drill bit is easy to break or wear excessively, and needs to be replaced continuously, so that the processing cost is increased; in addition, drill wear is also a major factor affecting machining efficiency. Therefore, there is a need for a drill bit with a balanced combination of hardness, wear resistance and toughness to meet the needs of better applications.
Disclosure of Invention
In order to solve the problems, the invention adopts the following technical scheme:
the hard alloy comprises the following components in parts by weight:
0.4 to 5 parts of carbon,
0.6 to 0.7 part of silicon,
0.2 to 0.3 part of vanadium,
0.5 to 0.8 part of boron,
0.1 to 0.2 part of antimony,
0.04 to 0.11 part of ytterbium,
1.6 to 2.8 parts of aluminum,
0.03 to 0.14 part of niobium,
1.03 to 1.22 parts of tin,
0.05 to 0.13 part of tantalum,
0.06 to 0.15 parts of magnesium,
0.04 to 0.09 part of phosphorus,
84-87 parts of iron.
In one mode, the raw materials are ground according to the proportion, pressed after being ground, sintered under the protection of argon gas, and naturally cooled to obtain the hard alloy material.
In one mode, the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotation speed of the grinding machine is 200r/min,
the grinding time is 1-3h,
pressing at 500-550MPa after grinding,
sintering at 850 ℃ for 20-30min under the argon atmosphere,
and naturally cooling to obtain the hard alloy material.
In one mode, the particle size of the magnesium, tantalum and boron is 4-8 μm.
One way, the weight ratio is as follows:
0.47 part of carbon, namely,
0.67 part of silicon, namely,
0.23 part of vanadium, namely,
0.57 part of boron, and the like,
0.15 part of antimony, and the balance of antimony,
0.06 part of ytterbium,
1.8 parts of aluminum, namely,
0.09 part of niobium, wherein the weight portion is,
1.12 parts of tin, namely,
0.08 portion of tantalum, namely,
0.12 part of magnesium, namely,
0.06 part of phosphorus,
85.04 parts of iron.
One mode, the adhesive further comprises 1-2 parts of metal adhesive.
In one form, the metal binder is Co60 cobalt-based alloy powder.
In one form, the metal bond has a particle size of 5 to 7 μm.
The invention has the beneficial effects that:
1. the hard alloy has good hardness, heat resistance and oxidation resistance, and can improve the high-temperature resistance, toughness and the like of the alloy tool;
2. has excellent high temperature and corrosion resistance.
Detailed Description
The following detailed description is to be read in conjunction with the accompanying drawings
Example 1
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.15 part of antimony, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering at 650 deg.C for 20min in argon atmosphere,
and naturally cooling to obtain the hard alloy material.
Example 2
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.15 part of antimony, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus, 1.5 parts of Co60 cobalt-based alloy powder and 86 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering at 650 deg.C for 20min in argon atmosphere,
and naturally cooling to obtain the hard alloy material.
Example 3
5 parts of carbon, 0.7 part of silicon, 0.3 part of vanadium, 0.8 part of boron, 0.2 part of antimony, 0.11 part of ytterbium, 2.8 parts of aluminum, 0.14 part of niobium, 1.22 parts of tin, 0.13 part of tantalum, 0.15 part of magnesium, 0.09 part of phosphorus and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 200r/min, the grinding time is 3h,
pressing under 550MPa after grinding,
sintering at 850 deg.C for 30min in argon atmosphere,
and naturally cooling to obtain the hard alloy material.
Example 4
0.4 part of carbon, 0.6 part of silicon, 0.2 part of vanadium, 0.5 part of boron, 0.1 part of antimony, 0.04 part of ytterbium, 1.6 parts of aluminum, 0.03 part of niobium, 1.03 part of tin, 0.05 part of tantalum, 0.06 part of magnesium, 0.04 part of phosphorus and 84 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 200r/min, the grinding time is 1h,
pressing under 500MPa after grinding, in an argon environment,
sintering the mixture for 20min at the temperature of 650 ℃,
and naturally cooling to obtain the hard alloy material.
Example 5
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.15 part of antimony, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus, 6 parts of Co60 cobalt-based alloy powder and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering at 650 deg.C for 20min in argon atmosphere,
and naturally cooling to obtain the hard alloy material.
Example 6
5 parts of carbon, 1 part of silicon, 0.1 part of vanadium, 0.3 part of boron, 0.4 part of antimony, 0.15 part of ytterbium, 1 part of aluminum, 0.2 part of niobium, 1.5 parts of tin, 0.15 part of tantalum, 0.05 part of magnesium, 0.1 part of phosphorus and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 200r/min, the grinding time is 1h,
pressing at 500-550MPa after grinding,
sintering at 650 deg.C for 20min in argon atmosphere,
and naturally cooling to obtain the hard alloy material.
Example 7
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.15 part of antimony, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus, 1.5 parts of Co60 cobalt-based alloy powder and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering the mixture for 20min at the temperature of 400 ℃,
and naturally cooling to obtain the hard alloy material.
Example 8
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.15 part of antimony, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering the mixture for 20min at the temperature of 400 ℃,
and naturally cooling to obtain the hard alloy material.
Example 9
3 parts of carbon, 0.65 part of silicon, 0.25 part of vanadium, 0.6 part of boron, 0.07 part of ytterbium, 1.9 parts of aluminum, 0.1 part of niobium, 1.12 parts of tin, 0.1 part of tantalum, 0.1 part of magnesium, 0.06 part of phosphorus, 1.5 parts of Co60 cobalt-based alloy powder and 85 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering the mixture for 20min at the temperature of 400 ℃,
and naturally cooling to obtain the hard alloy material.
Example 10
0.47 part of carbon, 0.67 part of silicon, 0.23 part of vanadium, 0.57 part of boron, 0.15 part of antimony, 0.06 part of ytterbium, 1.8 parts of aluminum, 0.09 part of niobium, 1.12 parts of tin, 0.08 part of tantalum, 0.12 part of magnesium, 0.06 part of phosphorus, 1.5 parts of Co60 cobalt-based alloy powder and 85.04 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotating speed of the grinder is 150r/min, the grinding time is 1h,
pressing under 500MPa after grinding,
sintering the mixture for 20min at the temperature of 400 ℃,
and naturally cooling to obtain the hard alloy material.
The following table shows the results of the product performance tests of the examples of the present application:
it will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.
Claims (6)
1. A cemented carbide characterized by: the weight ratio is as follows:
0.4 to 5 parts of carbon,
0.6 to 0.7 part of silicon,
0.2 to 0.3 part of vanadium,
0.5 to 0.8 part of boron,
0.1 to 0.2 part of antimony,
0.04 to 0.11 part of ytterbium,
1.6 to 2.8 parts of aluminum,
0.03 to 0.14 part of niobium,
1.03 to 1.22 parts of tin,
0.05 to 0.13 part of tantalum,
0.06 to 0.15 parts of magnesium,
0.04 to 0.09 part of phosphorus,
84-87 parts of iron;
the raw materials are put into a grinding machine according to the proportion for mixing and grinding,
the rotation speed of the grinder is 100-200r/min,
the grinding time is 1-3h,
pressing at 500-550MPa after grinding,
sintering at 850 ℃ for 20-30min under the argon atmosphere,
and naturally cooling to obtain the hard alloy material.
2. A cemented carbide according to claim 1, characterized in that: the particle size of the magnesium, the tantalum and the boron is 4-8 mu m.
3. A cemented carbide according to claim 1, characterized in that: the weight ratio is as follows:
0.47 part of carbon, namely,
0.67 part of silicon, namely,
0.23 part of vanadium, namely,
0.57 part of boron, and the like,
0.15 part of antimony, and the balance of antimony,
0.06 part of ytterbium,
1.8 parts of aluminum, namely,
0.09 part of niobium, wherein the weight portion is,
1.12 parts of tin, namely,
0.08 portion of tantalum, namely,
0.12 part of magnesium, namely,
0.06 part of phosphorus,
85.04 parts of iron.
4. A cemented carbide according to claim 1, characterized in that: and 1-2 parts of metal adhesive.
5. A cemented carbide according to claim 4 characterised in that: the metal adhesive is Co60 cobalt-based alloy powder.
6. A cemented carbide according to claim 5 characterised in that: the particle size of the metal adhesive is 5-7 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911070292.5A CN111020372B (en) | 2019-11-05 | 2019-11-05 | Hard alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911070292.5A CN111020372B (en) | 2019-11-05 | 2019-11-05 | Hard alloy |
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| Publication Number | Publication Date |
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| CN111020372A CN111020372A (en) | 2020-04-17 |
| CN111020372B true CN111020372B (en) | 2021-03-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1293610A (en) * | 1970-01-05 | 1972-10-18 | Deutsche Edelstahlwerke Ag | A sintered-steel-bonded carbide hard alloy |
| CN102015163A (en) * | 2005-01-10 | 2011-04-13 | H.C.施塔克股份有限公司 | Metallic powder mixtures |
| CN104164610A (en) * | 2014-07-25 | 2014-11-26 | 合肥市瑞宏重型机械有限公司 | High-carbon low alloy steel material and manufacturing method |
-
2019
- 2019-11-05 CN CN201911070292.5A patent/CN111020372B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1293610A (en) * | 1970-01-05 | 1972-10-18 | Deutsche Edelstahlwerke Ag | A sintered-steel-bonded carbide hard alloy |
| CN102015163A (en) * | 2005-01-10 | 2011-04-13 | H.C.施塔克股份有限公司 | Metallic powder mixtures |
| CN104164610A (en) * | 2014-07-25 | 2014-11-26 | 合肥市瑞宏重型机械有限公司 | High-carbon low alloy steel material and manufacturing method |
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