CN115338401B - Powder treatment method of high-specific gravity tungsten alloy - Google Patents
Powder treatment method of high-specific gravity tungsten alloy Download PDFInfo
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
Abstract
The invention relates to the technical field of tungsten alloy, and in particular discloses a powder treatment method of high-specific gravity tungsten alloy, which comprises the following steps: step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished; step two: the irradiation material is then stirred evenly in 5-9 times of pre-modifier, and then washed and dried to obtain the pre-treated material; step three: adding grinding modifier accounting for 10-15% of the total amount of the pretreatment materials, and uniformly mixing; step four: feeding the mixture into a grinder for grinding treatment; step five: finally, carrying out heat improvement treatment, and ending the treatment. According to the invention, the powder of the tungsten alloy is subjected to plasma treatment to improve the activity, then the modified powder is subjected to modification treatment by the pre-modifier, the modified powder can be better matched and combined with the grinding modifier, the tungsten alloy is subjected to grinding modification by the graphene, and the two processes are treated to mutually cooperate and improve the toughness, density and wear resistance of the product.
Description
Technical Field
The invention relates to the technical field of tungsten alloys, in particular to a powder treatment method of a high-specific gravity tungsten alloy.
Background
Tungsten alloy is an alloy based on tungsten with other elements added. Among metals, tungsten has the highest melting point, high-temperature strength and creep resistance, and good heat conduction, electric conduction and electron emission properties, and has a large specific gravity, and besides being widely used for manufacturing hard alloy and alloy additives, tungsten and alloys thereof are widely used in the electronic and electric light source industries, and also used for manufacturing rocket nozzles, die casting molds, armor piercing cores, contacts, heating elements, heat shields and the like in the departments of aerospace, casting, weapons and the like.
The prior art treatment process of the tungsten alloy powder is difficult to improve the toughness, the density performance and the wear resistance, and has low comprehensive treatment efficiency and needs further optimization and improvement treatment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a powder treatment method of a high-specific gravity tungsten alloy, so as to solve the problems in the prior art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a powder treatment method of a high specific gravity tungsten alloy, which comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation material is then stirred evenly in 5-9 times of pre-modifier, and then washed and dried to obtain the pre-treated material;
step three: adding grinding modifier accounting for 10-15% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
Preferably, the irradiation power of the plasma irradiation box treatment is 300-400W, and the irradiation time is 20-30min.
Preferably, the preparation method of the pre-modifier comprises the following steps:
s01: adding 5-10 parts of sodium alkyl sulfonate and 1-3 parts of chitosan into 10-15 parts of deionized water, then adding 6-10 parts of sodium alginate solution, and stirring and mixing uniformly to obtain a pre-base solution;
s02: adding 2-5 parts of lanthanum sulfate and 1-3 parts of trisodium isocitrate into 5-10 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The inventor of the invention finds that the density, impact toughness and wear resistance of the product are obviously deteriorated without adopting the pre-modifier treatment, meanwhile, the performance of the product is also prone to deterioration without adopting the grinding modifier treatment, no modified conditioner and no sodium alkyl sulfonate are added in the preparation of the pre-modifier, the preparation methods of the raw materials of the product are different, and the performances of the product are different;
the inventor of the invention finds that 1-hexyl-3-methylimidazole tetrafluoroborate is not added in the preparation of the grinding modifier, and the graphene is replaced by bentonite, so that the performance of the product is prone to be deteriorated, and only the grinding modifier is matched with the pre-modifier for treatment, so that the performance improvement effect of the product is remarkable;
the density, impact toughness and wear resistance of the product prepared by adopting the process treatment of the invention can achieve the coordinated improvement effect, and other methods are adopted to replace the product, so that the effect of the invention is not achieved.
Preferably, the mass fraction of the hydrochloric acid solution is 5-10%.
Preferably, the mass fraction of the sodium alginate solution is 10-15%.
Preferably, the preparation method of the grinding modifier comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 3-5 times, uniformly dispersing, then adding 1-3 parts of phosphoric acid buffer solution and 0.2-0.6 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously stirring uniformly, and finally washing and drying to obtain the grinding modifier.
Preferably, the pH of the phosphate buffer solution is 5.5-6.0.
Preferably, the rotating speed of the grinding treatment is 1000-1500r/min, and the grinding time is 25-35min.
Preferably, the step of the heat improvement treatment is: treating at 300-350deg.C for 10-20min, heating to 500deg.C at 2-5deg.C/min, maintaining for 5-10min, and air cooling to room temperature.
Preferably, the air cooling is performed by adopting air with the flow rate of 5-10L/min, and the air temperature is 5-10 ℃.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the powder of the heavy tungsten alloy is subjected to plasma treatment to improve the activity, then the modified powder is subjected to modification treatment by the pre-modifier, the modified powder can be better matched and combined with the grinding modifier, the tungsten alloy is subjected to grinding modification by the graphene, and the two processes are treated to realize synergistic interaction, so that the toughness, density and wear resistance of the product are improved.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The powder treatment method of the high specific gravity tungsten alloy solves the problems in the background technology.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a powder treatment method of a high specific gravity tungsten alloy, which comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation material is then stirred evenly in 5-9 times of pre-modifier, and then washed and dried to obtain the pre-treated material;
step three: adding grinding modifier accounting for 10-15% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
The irradiation power of the plasma irradiation box treatment is 300-400W, and the irradiation time is 20-30min.
The preparation method of the pre-modifier in the embodiment comprises the following steps:
s01: adding 5-10 parts of sodium alkyl sulfonate and 1-3 parts of chitosan into 10-15 parts of deionized water, then adding 6-10 parts of sodium alginate solution, and stirring and mixing uniformly to obtain a pre-base solution;
s02: adding 2-5 parts of lanthanum sulfate and 1-3 parts of trisodium isocitrate into 5-10 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The mass fraction of the hydrochloric acid solution in this example is 5-10%.
The mass fraction of the sodium alginate solution in the embodiment is 10-15%.
The preparation method of the grinding modifier in the embodiment comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 3-5 times, uniformly dispersing, then adding 1-3 parts of phosphoric acid buffer solution and 0.2-0.6 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously stirring uniformly, and finally washing and drying to obtain the grinding modifier.
The pH of the phosphate buffer solution of this example was 5.5-6.0.
The rotational speed of the grinding treatment in this embodiment is 1000-1500r/min, and the grinding time is 25-35min.
The steps of the heat improvement treatment of this embodiment are: treating at 300-350deg.C for 10-20min, heating to 500deg.C at 2-5deg.C/min, maintaining for 5-10min, and air cooling to room temperature.
The air cooling in this embodiment is performed by using air with a flow rate of 5-10L/min, and the air temperature is 5-10deg.C.
Example 1.
The powder treatment method of the high specific gravity tungsten alloy comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: irradiation is carried out, then the irradiation is stirred uniformly in a 5-time pre-modifier, and then water washing and drying are carried out, thus obtaining a pre-treatment material;
step three: then adding a grinding modifier accounting for 10 percent of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
The irradiation power of the plasma irradiation box treatment of this embodiment is 300W and the irradiation time is 20min.
The preparation method of the pre-modifier in the embodiment comprises the following steps:
s01: adding 5 parts of sodium alkyl sulfonate and 1 part of chitosan into 10 parts of deionized water, then adding 6 parts of sodium alginate solution, and uniformly stirring and mixing to obtain a pre-base solution;
s02: adding 2 parts of lanthanum sulfate and 1 part of trisodium isocitrate into 5 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The mass fraction of the hydrochloric acid solution of this example was 5%.
The mass fraction of the sodium alginate solution of this example was 10%.
The preparation method of the grinding modifier in the embodiment comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 3 times, uniformly dispersing, then adding 1 part of phosphoric acid buffer solution and 0.2 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously stirring uniformly, and finally washing and drying to obtain the grinding modifier.
The pH of the phosphate buffer solution of this example was 5.5.
The rotational speed of the polishing treatment in this example was 1000r/min, and the polishing time was 25min.
The steps of the heat improvement treatment of this embodiment are: treating at 300 deg.c for 10min, heating to 500 deg.c at the speed of 2 deg.c/min, maintaining for 5min, and final air cooling to room temperature.
The air cooling in this example was performed using air at a flow rate of 5L/min, and the air temperature was 5 ℃.
Example 2.
The powder treatment method of the high specific gravity tungsten alloy comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation is then stirred uniformly in a pre-modifier of 9 times, and then the mixture is washed and dried to obtain a pre-treated material;
step three: then adding a grinding modifier accounting for 15% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
The irradiation power of the plasma irradiation box treatment of this embodiment is 400W, and the irradiation time is 30min.
The preparation method of the pre-modifier in the embodiment comprises the following steps:
s01: adding 10 parts of sodium alkyl sulfonate and 3 parts of chitosan into 15 parts of deionized water, then adding 10 parts of sodium alginate solution, and uniformly stirring and mixing to obtain a pre-base solution;
s02: adding 5 parts of lanthanum sulfate and 3 parts of trisodium isocitrate into 10 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The mass fraction of the hydrochloric acid solution of this example was 10%.
The mass fraction of the sodium alginate solution of this example was 15%.
The preparation method of the grinding modifier in the embodiment comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 5 times for uniform dispersion, then adding 3 parts of phosphoric acid buffer solution and 0.6 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously stirring uniformly, and finally washing and drying to obtain the grinding modifier.
The pH of the phosphate buffer solution of this example was 6.0.
The rotational speed of the polishing treatment in this example was 1500r/min, and the polishing time was 35min.
The steps of the heat improvement treatment of this embodiment are: treating at 350deg.C for 20min, heating to 500deg.C at a rate of 5deg.C/min, maintaining for 10min, and air cooling to room temperature.
The air cooling in this example was performed using air at a flow rate of 10L/min, and the air temperature was 10 ℃.
Example 3.
The powder treatment method of the high specific gravity tungsten alloy comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation is then stirred uniformly in a pre-modifier of 7 times, and then the mixture is washed and dried to obtain a pre-treated material;
step three: then adding a grinding modifier accounting for 12.5% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
The irradiation power of the plasma irradiation box treatment of the embodiment is 350W, and the irradiation time is 25min.
The preparation method of the pre-modifier in the embodiment comprises the following steps:
s01: adding 7.5 parts of sodium alkyl sulfonate and 2 parts of chitosan into 12.5 parts of deionized water, then adding 8 parts of sodium alginate solution, and uniformly stirring and mixing to obtain a pre-base solution;
s02: adding 3.5 parts of lanthanum sulfate and 2 parts of trisodium isocitrate into 7.5 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The mass fraction of the hydrochloric acid solution of this example was 7.5%.
The mass fraction of the sodium alginate solution of this example was 12.5%.
The preparation method of the grinding modifier in the embodiment comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 4 times, uniformly dispersing, then adding 2 parts of phosphoric acid buffer solution and 0.4 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously and uniformly stirring, and finally washing and drying to obtain the grinding modifier.
The pH of the phosphate buffer solution of this example was 5.7.
The rotational speed of the polishing treatment in this example was 1250r/min, and the polishing time was 30min.
The steps of the heat improvement treatment of this embodiment are: firstly, treating for 15min at 325 ℃, then heating to 500 ℃ at a speed of 3 ℃/min, preserving heat for 7.5min, and finally air-cooling to room temperature.
The air cooling in this example was performed using air at a flow rate of 7.5L/min, and the air temperature was 7.5 ℃.
Example 4.
The powder treatment method of the high specific gravity tungsten alloy comprises the following steps:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation material is then stirred uniformly in a pre-modifier of 6 times, and then washed and dried to obtain a pre-treated material;
step three: then adding a grinding modifier accounting for 12% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, carrying out heat improvement treatment, and ending the treatment.
The irradiation power of the plasma irradiation box treatment of this embodiment is 320W, and the irradiation time is 22min.
The preparation method of the pre-modifier in the embodiment comprises the following steps:
s01: adding 6 parts of sodium alkyl sulfonate and 2 parts of chitosan into 12 parts of deionized water, then adding 7 parts of sodium alginate solution, and uniformly stirring and mixing to obtain a pre-base solution;
s02: adding 3 parts of lanthanum sulfate and 2 parts of trisodium isocitrate into 6 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain the pre-modifier.
The mass fraction of the hydrochloric acid solution of this example was 6%.
The mass fraction of the sodium alginate solution in this example was 12%.
The preparation method of the grinding modifier in the embodiment comprises the following steps: and (3) sending the graphene into deionized water with the concentration of 4 times, uniformly dispersing, then adding 2 parts of phosphoric acid buffer solution and 0.3 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously and uniformly stirring, and finally washing and drying to obtain the grinding modifier.
The pH of the phosphate buffer solution of this example was 5.6.
The rotational speed of the polishing treatment in this example was 1200r/min, and the polishing time was 26min.
The steps of the heat improvement treatment of this embodiment are: treating at 310 deg.c for 12min, heating to 500 deg.c at the speed of 3 deg.c/min, maintaining for 6min, and final air cooling to room temperature.
The air cooling in this embodiment is performed by using air with a flow rate of 5-10L/min, and the air temperature is 5-10deg.C.
Comparative example 1.
The difference from example 3 is that no pre-modifier treatment was used.
Comparative example 2.
The difference from example 3 is that no modified conditioner was added in the preparation of the pre-modifier.
Comparative example 3.
The difference from example 3 is that the modified conditioner was prepared without the addition of trisodium isocitrate.
Comparative example 4.
The difference from example 3 is that no sodium alkyl sulfonate was added in the preparation of the pre-modifier.
Comparative example 5.
The difference from example 3 is that no grinding modifier treatment was used.
Comparative example 6.
The difference from example 3 is that no 1-hexyl-3-methylimidazole tetrafluoroborate was added in the preparation of the grinding modifier.
Comparative example 7.
The difference from example 3 is that the graphene in the grinding modifier is replaced with bentonite.
Comparative example 8.
The difference from example 3 is that no heat-modifying treatment was employed.
Measuring alloy abrasion performance by using an ML-100 type abrasive abrasion tester;
the products of examples 1-4 and comparative examples 1-8 were subjected to performance testing;
as can be seen from comparative examples 1-8 and examples 1-4;
according to the invention, the density, impact toughness and wear resistance of the product are obviously deteriorated without being treated by a pre-modifier, the performance of the product is also deteriorated without being treated by a grinding modifier, the preparation of the pre-modifier is not added with a modified conditioner and is not added with sodium alkyl sulfonate, the raw material preparation methods of the product are different, the performance of the product is different, 1-hexyl-3-methylimidazole tetrafluoroborate is not added in the preparation of the grinding modifier, and the graphene is replaced by bentonite, so that the performance of the product is also deteriorated, and only the grinding modifier provided by the invention is matched with the pre-modifier for treatment, so that the performance improvement effect of the product is obvious;
the density, impact toughness and wear resistance of the product prepared by adopting the process treatment of the invention can achieve the coordinated improvement effect, and other methods are adopted to replace the product, so that the effect of the invention is not achieved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The powder treatment method of the high-specific gravity tungsten alloy is characterized by comprising the following steps of:
step one: firstly placing tungsten alloy powder into a plasma irradiation box for irradiation treatment, and obtaining an irradiation treatment after irradiation is finished;
step two: the irradiation material is then stirred evenly in 5-9 times of pre-modifier, and then washed and dried to obtain the pre-treated material;
step three: adding grinding modifier accounting for 10-15% of the total amount of the pretreatment materials, and uniformly mixing;
step four: feeding the mixture into a grinder for grinding treatment;
step five: finally, performing heat improvement treatment, and finishing the treatment; the preparation method of the pre-modifier comprises the following steps:
s01: adding 5-10 parts of sodium alkyl sulfonate and 1-3 parts of chitosan into 10-15 parts of deionized water, then adding 6-10 parts of sodium alginate solution, and stirring and mixing uniformly to obtain a pre-base solution;
s02: adding 2-5 parts of lanthanum sulfate and 1-3 parts of trisodium isocitrate into 5-10 parts of hydrochloric acid solution, and uniformly stirring to obtain a modified conditioner;
s03: adding the modified conditioner into the pre-base liquid according to the weight ratio of 1:5, and stirring and mixing fully to obtain a pre-modifier; the preparation method of the grinding modifier comprises the following steps: the preparation method comprises the steps of (1) sending graphene into deionized water with the concentration of 3-5 times, uniformly dispersing, then adding 1-3 parts of phosphoric acid buffer solution and 0.2-0.6 part of 1-hexyl-3-methylimidazole tetrafluoroborate, continuously stirring uniformly, and finally washing and drying to obtain a grinding modifier; the heat improvement treatment comprises the following steps: treating at 300-350deg.C for 10-20min, heating to 500deg.C at 2-5deg.C/min, maintaining for 5-10min, and air cooling to room temperature.
2. The powder treatment method of the high specific gravity tungsten alloy according to claim 1, wherein the irradiation power of the plasma irradiation box is 300-400W, and the irradiation time is 20-30min.
3. The powder treatment method of a high specific gravity tungsten alloy according to claim 1, wherein the mass fraction of the hydrochloric acid solution is 5-10%.
4. The powder treatment method of the high-specific gravity tungsten alloy according to claim 1, wherein the mass fraction of the sodium alginate solution is 10-15%.
5. The method for powder treatment of a high gravity tungsten alloy according to claim 1, wherein the pH of the phosphoric acid buffer solution is 5.5-6.0.
6. The powder treatment method of a high specific gravity tungsten alloy according to claim 1, wherein the rotation speed of the grinding treatment is 1000-1500r/min and the grinding time is 25-35min.
7. The powder treatment method of a high specific gravity tungsten alloy according to claim 1, wherein the air cooling is performed by using air at a flow rate of 5 to 10L/min, and the air temperature is 5 to 10 ℃.
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| 用高能球磨粉末制备的高比重钨合金的组织与性能;田开文, 冯宏伟, 吴红, 史强军;兵器材料科学与工程(05);第47-49页 * |
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| CN115338401A (en) | 2022-11-15 |
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