A tungsten alloy rod and a method of manufacturing the same

Abstract

This invention discloses a tungsten alloy rod, comprising the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is (11-14):(2-4):5:9. The tungsten alloy rod of this invention uses tungsten, nickel, and chromium as the main materials. By adding wollastonite modifier and yttrium oxide conditioning solution, they are mutually harmonized and synergistically formulated. The wollastonite modifier strengthens the system, enhancing the interfacial efficiency between the raw materials. Furthermore, the yttrium oxide conditioning solution and the wollastonite modifier synergistically enhance each other, resulting in further improved product performance, achieving a coordinated improvement in impact toughness and wear resistance.

Description

Technical Field

[0001] This invention relates to the field of tungsten alloy rod technology, specifically to a tungsten alloy rod and its preparation method. Background Technology

[0002] Tungsten alloys are alloys composed of tungsten as a base and other elements. Among metals, tungsten has the highest melting point, excellent high-temperature strength and creep resistance, as well as good thermal conductivity, electrical conductivity, and electron emission properties. It also has a high specific gravity. Besides its extensive use in manufacturing cemented carbides and as an alloying additive, tungsten and its alloys are widely used in the electronics and electric light source industries, and in aerospace, casting, and weaponry sectors for making rocket nozzles, die-casting molds, armor-piercing projectile cores, contacts, heating elements, and heat shields. However, while existing tungsten alloy rods have been improved for impact toughness, their wear resistance has decreased, making it difficult to achieve a coordinated improvement in both impact toughness and wear resistance, thus limiting the product's efficiency. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this invention is to provide a tungsten alloy rod and its preparation method, so as to solve the problems mentioned in the background art.

[0004] The present invention solves the technical problem by adopting the following technical solution: This invention provides a tungsten alloy rod material, which comprises the following raw materials: tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier and yttrium oxide conditioning solution is (11-14):(2-4):5:9.

[0005] Preferably, the preparation method of the wollastonite modifier is as follows: S01: Preheat wollastonite at 50-55℃ for 5-10 minutes, then immerse the wollastonite in a lanthanum chloride solution with a volume of 4-5 times that of the wollastonite. The immersion pressure is 10-15 MPa and the immersion time is 10-20 minutes. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 5-10% of the total magnesium oxide content of silane coupling agent KH560 and 2-4% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 10-15% of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1000-1500 r / min and the ball milling time is 1-2 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier.

[0006] Preferably, the lanthanum chloride solution has a mass fraction of 2-5%.

[0007] Preferably, the sodium dodecylbenzenesulfonate solution has a mass fraction of 10-15%.

[0008] Preferably, the yttrium oxide conditioning solution is prepared by: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution that is 4-6 times the total amount of the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate that is 2-5% of the total amount of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain the yttrium oxide conditioning solution.

[0009] Preferably, the irradiation power of the irradiation treatment is 300-350W, and the irradiation time is 1-2h.

[0010] Preferably, the chitosan solution has a mass fraction of 5-8%.

[0011] Preferably, the regulator is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:1.

[0012] This invention also provides a method for preparing tungsten alloy rods, characterized by comprising the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1200-1250℃ for 1-2 hours. After sintering, the tungsten alloy rod of the present invention is obtained.

[0013] Preferably, the extrusion molding pressure is 100-120 MPa and the extrusion time is 10-20 min.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The tungsten alloy rod of this invention uses tungsten, nickel, and chromium as the main materials. By adding wollastonite modifier and yttrium oxide conditioning liquid, they are blended and synergistically formulated. The wollastonite modifier strengthens the system and enhances the interfacial performance between the raw materials. The yttrium oxide conditioning liquid and wollastonite modifier are further synergistically formulated, resulting in further improvements in the product's performance, including a coordinated improvement in impact toughness and wear resistance. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] This embodiment provides a tungsten alloy rod material, which includes the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is (11-14):(2-4):5:9.

[0017] The preparation method of wollastonite modifier is as follows: S01: Preheat wollastonite at 50-55℃ for 5-10 minutes, then immerse the wollastonite in a lanthanum chloride solution with a volume of 4-5 times that of the wollastonite. The immersion pressure is 10-15 MPa and the immersion time is 10-20 minutes. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 5-10% of the total magnesium oxide content of silane coupling agent KH560 and 2-4% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 10-15% of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1000-1500 r / min and the ball milling time is 1-2 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier.

[0018] The mass fraction of lanthanum chloride solution is 2-5%.

[0019] The mass fraction of sodium dodecylbenzenesulfonate solution is 10-15%.

[0020] The preparation method of yttrium oxide conditioning solution is as follows: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution that is 4-6 times the total amount of the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate that is 2-5% of the total amount of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain the yttrium oxide conditioning solution.

[0021] In this embodiment, the irradiation power is 300-350W and the irradiation time is 1-2h.

[0022] The chitosan solution in this embodiment has a mass fraction of 5-8%.

[0023] The regulator in this embodiment is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:1.

[0024] This embodiment describes a method for preparing a tungsten alloy rod, characterized by comprising the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1200-1250℃ for 1-2 hours. After sintering, the tungsten alloy rod of the present invention is obtained.

[0025] In this embodiment, the extrusion molding pressure is 100-120 MPa, and the extrusion time is 10-20 min.

[0026] Example 1 This embodiment provides a tungsten alloy rod material, which comprises the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is 11:2:5:9.

[0027] Preferably, the preparation method of the wollastonite modifier is as follows: S01: Preheat wollastonite at 50°C for 5 minutes, then immerse the wollastonite in a lanthanum chloride solution with a volume of 4-5 times that of the wollastonite. The immersion pressure is 10 MPa and the immersion time is 10 minutes. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 5% of the total magnesium oxide content of silane coupling agent KH560 and 2% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 10% of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1000 r / min and the ball milling time is 1 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier.

[0028] The mass fraction of the lanthanum chloride solution is 2%.

[0029] The sodium dodecylbenzenesulfonate solution has a mass fraction of 10%.

[0030] The preparation method of yttrium oxide conditioning solution is as follows: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution with a total volume of 4 times the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate with a total volume of 2% of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain the yttrium oxide conditioning solution.

[0031] In this embodiment, the irradiation power is 300W and the irradiation time is 1 hour.

[0032] The chitosan solution in this embodiment has a mass fraction of 5%.

[0033] The regulator in this embodiment is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:1.

[0034] This embodiment describes a method for preparing a tungsten alloy rod, characterized by comprising the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1200℃ for 1 hour. After sintering is completed, the tungsten alloy rod of the present invention is obtained.

[0035] In this embodiment, the extrusion molding pressure is 100 MPa and the extrusion time is 10 min.

[0036] Example 2 This embodiment provides a tungsten alloy rod material, which comprises the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is 14:4:5:9.

[0037] The preparation method of wollastonite modifier is as follows: S01: Preheat wollastonite at 55°C for 10 minutes, then immerse the wollastonite in a lanthanum chloride solution with a volume of 5 times that of the wollastonite. The immersion pressure is 15 MPa and the immersion time is 10-20 minutes. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 10% of the total magnesium oxide content of silane coupling agent KH560 and 4% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 15% of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1500 r / min and the ball milling time is 2 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier.

[0038] The lanthanum chloride solution has a mass fraction of 5%.

[0039] The sodium dodecylbenzenesulfonate solution has a mass fraction of 15%.

[0040] The preparation method of yttrium oxide conditioning solution is as follows: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution that is 6 times the total amount of the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate that is 5% of the total amount of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain the yttrium oxide conditioning solution.

[0041] In this embodiment, the irradiation power is 350W and the irradiation time is 2h.

[0042] The chitosan solution in this embodiment has a mass fraction of 8%.

[0043] The regulator in this embodiment is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:1.

[0044] This embodiment describes a method for preparing a tungsten alloy rod, characterized by comprising the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1250°C for 2 hours. After sintering is completed, the tungsten alloy rod of the present invention is obtained.

[0045] In this embodiment, the extrusion molding pressure is 120 MPa and the extrusion time is 20 min.

[0046] Example 3 This embodiment provides a tungsten alloy rod material, which comprises the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is 12.5:3:5:9.

[0047] The preparation method of wollastonite modifier is as follows: S01: Preheat wollastonite at 52°C for 7.5 min, then immerse the wollastonite in a lanthanum chloride solution with a volume of 4.5 times that of the wollastonite. The immersion pressure is 12.5 MPa and the immersion time is 15 min. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 7.5% of the total magnesium oxide content of silane coupling agent KH560 and 3% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 12.5% ​​of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1250 r / min and the ball milling time is 1.5 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier.

[0048] The mass fraction of the lanthanum chloride solution is 3.5%.

[0049] The sodium dodecylbenzenesulfonate solution has a mass fraction of 12.5%.

[0050] The preparation method of yttrium oxide conditioning solution is as follows: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution that is 5 times the total amount of the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate that is 3.5% of the total amount of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain the yttrium oxide conditioning solution.

[0051] In this embodiment, the irradiation power is 320W and the irradiation time is 1.5h.

[0052] The chitosan solution in this embodiment has a mass fraction of 6.5%.

[0053] The regulator in this embodiment is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:1.

[0054] This embodiment describes a method for preparing a tungsten alloy rod, characterized by comprising the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1220℃ for 1.5h. After sintering is completed, the tungsten alloy rod of the present invention is obtained.

[0055] In this embodiment, the extrusion molding pressure is 110 MPa and the extrusion time is 15 min.

[0056] Comparative Example 1. Unlike Example 3, no wollastonite modifier was added.

[0057] Comparative Example 2. Unlike Example 3, the SO1 step was not used in the preparation of the wollastonite modifier.

[0058] Comparative Example 3. Unlike Example 3, magnesium oxide modifier was not used in the preparation of the wollastonite modifier.

[0059] Comparative Example 4. The difference from Example 3 is the preparation method of the magnesium oxide modifier; no silane coupling agent KH560 or nano-silica sol was added.

[0060] Comparative Example 5. Unlike Example 3, this one was not treated with yttrium oxide conditioning solution.

[0061] Comparative Example 6. Unlike Example 3, the yttrium oxide modifier in the yttrium oxide conditioning solution is directly replaced by yttrium oxide raw material.

[0062] The performance measurement results of Examples 1-3 and Comparative Examples 1-6 are as follows:

[0063] From Examples 1-3 and Comparative Examples 1-6, it can be seen that the product of the present invention has excellent impact toughness and wear resistance. The performance of the product can be improved in a coordinated manner. At the same time, without the addition of wollastonite modifier and without the use of yttrium oxide conditioning solution, the performance of the product shows a significant trend of deterioration. Only by using the two in combination and working together can the performance of the product be most significant. Furthermore, the performance of products deteriorated in several ways, including the absence of the SO1 step in the preparation of the wollastonite modifier, the absence of magnesium oxide modifier in the preparation of the wollastonite modifier, the use of different magnesium oxide modifier preparation methods, the lack of addition of silane coupling agent KH560 and nano-silica sol, and the direct substitution of yttrium oxide raw materials for the yttrium oxide modifier in the yttrium oxide conditioning solution. Only the wollastonite modifier and yttrium oxide conditioning solution prepared by the method of this invention showed the most significant performance improvement, achieving a coordinated improvement in impact toughness and wear resistance.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0065] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tungsten alloy rod characterized by, The tungsten alloy rod material comprises the following raw materials: tungsten, nickel, chromium, wollastonite modifier, and yttrium oxide conditioning solution; wherein the mass ratio of tungsten, nickel, wollastonite modifier, and yttrium oxide conditioning solution is (11-14):(2-4):5:9; the preparation method of the wollastonite modifier is as follows: S01: Preheat wollastonite at 50-55℃ for 5-10 minutes, then immerse the wollastonite in a lanthanum chloride solution with a volume of 4-5 times that of the wollastonite. The immersion pressure is 10-15 MPa and the immersion time is 10-20 minutes. After immersion, filter and dry to obtain wollastonite impregnating agent. S02: Mix magnesium oxide and sodium dodecylbenzenesulfonate solution at a weight ratio of 1:5, then add 5-10% of the total magnesium oxide content of silane coupling agent KH560 and 2-4% of the total magnesium oxide content of nano-silica sol, and mix well to obtain magnesium oxide modifier. S03: Add 10-15% of magnesium oxide modifier to the wollastonite impregnating agent and ball mill it. The ball milling speed is 1000-1500 r / min and the ball milling time is 1-2 h. After the ball milling is completed, wash with water and dry to obtain the wollastonite modifier. The preparation method of the yttrium oxide conditioning solution is as follows: S11: Yttrium oxide is first sent into a proton irradiation chamber for irradiation treatment. After irradiation, irradiated yttrium oxide is obtained. S12: First, add the irradiated yttrium oxide agent to a chitosan solution that is 4-6 times the total amount of the irradiated yttrium oxide agent and stir thoroughly. Then, add sodium lignosulfonate that is 2-5% of the total amount of the irradiated yttrium oxide agent, stir evenly, wash with water, and dry to obtain the yttrium oxide modifier. S13: Mix the yttrium oxide modifier and regulator at a weight ratio of 2:5 to obtain a yttrium oxide conditioning solution; The regulator is a mixture of 10% sodium alginate solution, triethanolamine borate, and diethanolamine in a weight ratio of 5:2:

1. The preparation method of tungsten alloy rods includes the following steps: Tungsten, nickel, chromium, wollastonite modifier and yttrium oxide conditioning liquid are stirred and mixed evenly, then washed with water and dried, then shaped in an extrusion molding machine, and then sintered at 1200-1250℃ for 1-2 hours. After sintering, tungsten alloy rod material is obtained.

2. The tungsten alloy rod according to claim 1, characterized in that, The lanthanum chloride solution has a mass fraction of 2-5%.

3. The tungsten alloy rod according to claim 1, characterized in that, The sodium dodecylbenzenesulfonate solution has a mass fraction of 10-15%.

4. The tungsten alloy rod according to claim 1, characterized in that, The irradiation power of the irradiation treatment is 300-350W, and the irradiation time is 1-2h.

5. The tungsten alloy rod according to claim 1, characterized in that, The chitosan solution has a mass fraction of 5-8%.

6. The tungsten alloy rod according to claim 1, characterized in that, The extrusion molding pressure is 100-120 MPa, and the extrusion time is 10-20 min.

Images