CN103346054A - Thorium tungsten wire used for winding microwave oven magnetron and manufacturing method of thorium tungsten wire - Google Patents

Thorium tungsten wire used for winding microwave oven magnetron and manufacturing method of thorium tungsten wire Download PDF

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CN103346054A
CN103346054A CN2013102490104A CN201310249010A CN103346054A CN 103346054 A CN103346054 A CN 103346054A CN 2013102490104 A CN2013102490104 A CN 2013102490104A CN 201310249010 A CN201310249010 A CN 201310249010A CN 103346054 A CN103346054 A CN 103346054A
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thorium
tungsten
step
tungsten wire
potassium
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CN103346054B (en
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李猛进
张海坡
袁瑞杰
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威海多晶钨钼科技有限公司
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Abstract

The invention belongs to the technical field of metal material manufacturing, and particularly relates to a thorium tungsten wire used for winding a microwave oven magnetron and a manufacturing method of the thorium tungsten wire. The thorium tungsten wire is characterized by comprising 0.5-1.5% of thorium oxide, 0.0020-0.0080% of potassium and 97-98% of tungsten. Compared with the prior art, the thorium tungsten wire and the manufacturing method have the advantages that (1) according to the thorium tungsten wire, though 0.0020-0.0080% of the potassium is added, thorium oxide particles are still fine and uniform; (2) the thorium tungsten wire contains microelement potassium in content, after coils of the microwave oven magnetron wound through the thorium tungsten wire are carbonized at a high temperature, crystal grains cannot grow larger easily, organization stability is maintained, and the situation that the microwave oven magnetron cannot break due to shaking in the packaging and delivery transportation processes after being produced is guaranteed.

Description

用于绕制微波炉磁控管的钍钨丝及其制造方法 Thorium tungsten wire and a manufacturing method for a microwave oven magnetron winding

技术领域 FIELD

[0001] 本发明涉及属于金属材料制造技术领域,具体的说是一种用于绕制微波炉磁控管的钍钨丝及其制造方法。 [0001] The present invention relates belongs to the technical field of metal material, specifically a thorium tungsten wire and a manufacturing method for a microwave oven magnetron wound.

背景技术 Background technique

[0002] 现有技术中,微波炉用的磁控管采用钍钨丝绕制而成。 [0002] In the prior art, a microwave oven using a magnetron winding made of thorium tungsten. 为提高磁控管发射的稳定性,要求对用钍钨丝绕成的磁控管进行碳化处理。 To enhance the stability of the magnetron emission requirements of the wound with a tungsten thorium magnetron carbonized. 碳化是把已经定形且装配好的磁控管放在碳氢化合物的蒸气中,加热到2200-2500°C,当碳氢化合物蒸气和高温的钨接触时,分解出碳和氢,碳附着在钍钨丝的表面,与钨形成碳化钨并向钨内部扩散。 The carbonation is already shaped and assembled in the magnetron of hydrocarbon vapor and heated to 2200-2500 ° C, when in contact with hydrocarbon vapors tungsten and high temperature, decomposition of carbon and hydrogen, carbon adhered thorium tungsten surface, and is formed of tungsten carbide and tungsten internal diffusion. 由于钍原子与碳化钨的结合力比钨大,碳化的钍钨丝在工作温度下,碳化钨将氧化钍还原成钍原子,从而使钍钨丝表面形成一稳定的单原子覆盖层,使之产生稳定的电子发射。 Since thorium atom binding force than tungsten carbide, tungsten, tungsten thorium carbide at the operating temperature, the tungsten atoms thoria reduced to thorium, thorium tungsten wire such that a stable surface monoatomic covering layer, so that generating stable electron emission.

[0003] 但是,采用传统的钍钨丝制备的微波炉磁控管在碳化的过程中,由于碳化温度高于钍钨丝的再结晶温度(约2000°C),钨晶粒长大速度快,导致钍钨丝的脆性增加,以致于在微波炉磁控管的装配及运输过程中容易发生脆断,降低微波炉磁控管生产过程中的成品率。 [0003] However, with the conventional microwave oven magnetron during the preparation of thorium tungsten carbide, since the carbonization temperature is higher than the recrystallization temperature of the tungsten thorium (about 2000 ° C), grain growth of W speed, leads to increased brittleness of thorium tungsten wire, so that the brittle fracture easily occurs during assembly and transportation of the microwave oven magnetron, the microwave oven magnetron decrease in yield in the production process. 另外,由于传统的钍钨丝抗蠕变能力低,采用传统的钍钨丝制备的微波炉磁控管在使用过程中会发生变形,降低其使用寿命。 Further, since the conventional anti thorium tungsten low creep, prepared using a conventional microwave oven magnetron thorium tungsten deformed during use, to reduce its service life.

[0004] 中国专利ZL200610033294.3公开了一种通过加入强酸溶液洗涤来去除钾等杂质的方法,如其说明书中公布,该方法在酸洗过程中需要反复重复依次利用去离子纯净水、盐酸、氢氟酸、去离子纯净水洗涤物料,过滤并检验物料的过程,直至将物料内钾的含量降至小于15PPM后,才进行下一步处理,该方法步骤繁琐,影响了生产效率;而另一方面,研究表明,向钨合金中适量添加微量元素如钾,能够有效细化钨晶粒,促进烧结,从而降低烧结温度,抑制因长期处于高温条件下而导致的氧化钍颗粒的粗化现象。 [0004] Chinese patent ZL200610033294.3 discloses a process for removing impurities such as by the addition of potassium strong acid washing solution, such as its published specification, this method requires repeated in the pickling process is repeated successively with deionized pure water, hydrochloric acid, hydrogen after the hydrofluoric acid, the material was washed with deionized purified water, filtered, and material inspection process, until the potassium content of the material to less than 15PPM, before further processing, the process step complicated, affecting the efficiency of production; on the other hand studies show that adding an appropriate amount of trace elements such as potassium, tungsten alloy, tungsten grain refinement can effectively promote sintering, thereby lowering the sintering temperature, suppressing coarsening due to long-term high temperature condition which results thorium oxide particles.

发明内容 SUMMARY

[0005] 本发明针对现有技术存在的缺陷,提出了一种工作性能优良的特别适用于绕制微波炉磁控管的钍钨丝及其制造方法。 [0005] The present invention is directed to drawbacks of the prior art, proposed with excellent performance and a manufacturing method of thorium tungsten wire is particularly suitable for microwave oven magnetron winding.

[0006] 本发明可以通过以下措施达到: [0006] The present invention can be achieved by the following measures:

一种用于绕制微波炉磁控管的钍钨丝,其特征在于包括以下列各组分:氧化钍 An apparatus for winding a microwave oven magnetron thoriated tungsten filament, characterized by comprising the following components: thoria

0.5-1.5%,钾0.0020-0.0080%,钨97-98%。 0.5-1.5%, potassium 0.0020-0.0080%, 97-98% tungsten.

[0007] 一种如上所述钍钨丝的制造方法,其特征在于包括以下步骤: [0007] A method for manufacturing thorium tungsten wire as described above, comprising the steps of:

步骤1:掺杂,向掺杂锅内加入硝酸娃溶液、硝酸钾溶液、娃酸招溶液与蓝鹤粉,通过固液混合烘干后,将原料送入还原炉, Step 1: doping, baby nitrate solution was added, a solution of potassium nitrate, an acid recruit baby powder to a solution of Blue Crane doped pot, after the solid-liquid mixing and drying, the raw material into the reduction furnace,

步骤2:还原,原料置于还原炉内后采用5段控温的还原工艺,五段温度分别为550°C、650°C、750°C、85(TC、95(rC,每段保温时间均为60_80min,装舟量为300_350g/舟,还原气氛为氢气,氢气流量为3-5m3/h,还原得到含有微量钾兀素的娃鹤粉末, Step 2: Reduction of raw materials placed in the reduction furnace using temperature reduction process section 5, five sections temperatures of 550 ° C, 650 ° C, 750 ° C, 85 (TC, 95 (rC, each segment holding time are 60_80min, boat loading amount 300_350g / boat, a reducing atmosphere of hydrogen gas flow rate of 3-5m3 / h, is reduced to give a powder containing trace amount of potassium baby crane Wu pigment,

步骤3:高能球磨,对步骤2中所得钍钨粉末进行酸洗后,放入含有聚氨酯内衬的球磨罐内高能球磨3-5h,球磨介质为钨球, Step 3: high energy ball milling, after thoriated tungsten powder obtained in step 2 pickling tank into the high energy ball milling liner comprises a polyurethane 3-5h, tungsten ball milling medium,

步骤4:压制,对球磨后的原料进行等静压制,获得钍钨条坯料,其中压制力为145-250MPa,钍钨条单重1.5kg-2.5kg 之间, Step 4: pressing, the raw material after isostatic pressing a ball mill to obtain a strip blank thoriated tungsten, wherein the pressing force of 145-250MPa, singlet thoriated tungsten strip between 1.5kg-2.5kg,

步骤5:烧结,将钍钨条坯料置于烧结炉内,采用直接通电垂熔烧结,烧结工艺为:2分钟内电流由OA上升至900A,经18分钟电流上升至3100-3500A,再经20分钟电流上升至4000-4500A,得到密度在17.5_18g/cm3之间的垂熔条, Step 5: sintering, tungsten thorium blank placed in a sintering furnace, a sintered energizing direct sintering, a sintering process is: the current increased from 2 minutes to OA 900A, up to 3100-3500A current over 18 minutes, and then 20 minutes to increase the current 4000-4500A, a sintered article having a density between 17.5_18g / cm3, and

步骤6:旋锻,采用旋锻机,把垂熔条从17mm左右加工到直径3.3mm,在此过程中,在9mm和5mm各进行一次高温退火,退火温度为2000-2300°C之间,退火速度0.5-2m/min,步骤7:拉丝,旋锻成3.3mm的掺杂钍钨条进入拉丝机拉丝,采用模序为2.8 - 2.4-2.0 -1.52 -1.24-1.08-0.93-0.77-0.7-0.63-0.57 -0.51mm,最后得到掺杂钍钨黑丝,步骤8:清洗,将直径0.51mm的黑丝经电解抛光至0.50mm,得到绕制微波炉磁控管的钍钨丝。 Step 6: swaged by spin forging machine, to a sintered article from 17mm diameter to about 3.3mm and processing, in this process, a high temperature annealing is performed in each of 5mm and 9mm, the annealing temperature is between 2000-2300 ° C, annealing speed of 0.5-2m / min, step 7: drawing, swaged to 3.3mm thorium doped tungsten wire drawing into the drawing machine, using the motif of 2.8 - 2.4-2.0 -1.52 -1.24-1.08-0.93-0.77-0.7 -0.63-0.57 -0.51mm, thorium doped tungsten finally obtained black silk, step 8: washing, diameter 0.51mm 0.50mm black silk electrolytically polished to give thoriated tungsten filament wound microwave magnetron.

[0008] 本发明在钍钨丝的制备过程中增加了高能球磨工序,通过高能球磨,一方面可以使还原得到氧化钍颗粒进一步细化和均匀分布在钨颗粒内部,另一方面还可以使钨颗粒进一步细化和增加钨晶粒内部的晶体缺陷,从而促进烧结,降低烧结温度,抑制氧化钍颗粒的粗化,通过采用以上措施,本发明具有以下有益效果:(1)通过本发明方法制备的钍钨丝,即使掺杂了0.0020-0.0080%的钾,氧化钍颗粒仍呈细小均匀分布。 [0008] The present invention increases during the preparation of the tungsten thorium high energy ball milling process, by high energy ball milling, one can obtain the reduced thoria particles further refine and uniformly distributed inside the tungsten particles, on the other hand it is also possible tungsten particles further refine and increase tungsten crystal defects inside crystal grains, thereby promoting sintering, the sintering temperature is lowered, suppressing coarsening of thorium oxide particles by using the above measures, the present invention has the following advantages: (1) prepared by the process of the present invention thorium tungsten wire, even if the doped 0.0020-0.0080% potassium, thorium oxide fine particles continued to show a uniform distribution. (2)本发明钍钨丝,在成分上含有微量元素钾,采用这种钍钨丝绕制的微波炉用磁控管线圈经高温碳化后,晶粒不易长大,能保持组织稳定,可保证生产完毕后包装、发货等运输流程不会出现因震动导致的脆断。 (2) thoriated tungsten filament of the present invention, the composition contains trace elements potassium, thorium tungsten wire using such a microwave oven with magnetron winding the coil at high temperature carbonization, grains grow easily, can maintain tissue stability, ensure after production packaging, shipping and other transportation process does not lead to brittle fracture due to vibration occurs.

[0009] 附图说明: [0009] BRIEF DESCRIPTION OF DRAWINGS:

附图1是本发明钍钨丝的显微结构。 1 is a microstructure thorium tungsten wire of the present invention.

[0010] 附图2是用本发明钍钨丝绕制成的微波炉磁控线圈经高温碳化后的显微结构,显示碳化后的鹤晶粒仍保持细小形式。 [0010] Figure 2 is a wound coil made of a microwave oven magnetron according to the present invention by thorium tungsten microstructure after high-temperature carbonization, carbonized grains display crane remains small form.

[0011] 附图3是采用传统钍钨丝绕制成的微波炉磁控线圈经高温碳化后的显微结构,显示碳化后粗大的鹤晶粒。 [0011] Figure 3 is a microwave oven using a conventional magnetic coils made by winding tungsten thorium microstructure after high-temperature carbonization, the display after carbonization crane coarse grains.

[0012] 具体实施方式: [0012] DETAILED DESCRIPTION:

下面结合附图和实施例对发明做进一步说明: DRAWINGS Examples and embodiments of the invention will be further described:

实施例1: Example 1:

一种用于绕制微波炉磁控管的钍钨丝的制造方法,包括以下步骤: A manufacturing method of tungsten wire wound thorium magnetron for a microwave oven, comprising the steps of:

步骤1:掺杂,将硝酸钍溶液、硝酸钾溶液、硅酸铝溶液与蓝钨粉在掺杂锅内固液混合烘干,然后送入还原炉, Step 1: doping, the thorium nitrate solution, a potassium nitrate solution, aluminum silicate solution and blue tungsten powder doped solid-liquid mixture and drying pan, and then into the reduction furnace,

步骤2:还原,还原炉采用5段控温的还原工艺,4段温度分别为550°c、750°c、85(rc、950°C,每段保温时间均为60-80min,装舟量为300_350g/舟,还原气氛为氢气,氢气流量为3-5m3/h,还原得到含有微量钾元素的钍钨粉末,其粉末粒度范围为1.3-1.5 μ m, Step 2: reduction, reduction furnace using a temperature reduction process section 5, section 4 temperatures of 550 ° c, 750 ° c, 85 (rc, 950 ° C, holding time of each segment are 60-80min, the amount of loading the boat is 300_350g / boat, a reducing atmosphere of hydrogen gas flow rate of 3-5m3 / h, is reduced to give a powder thoriated tungsten containing potassium trace element, a powder size range of 1.3-1.5 μ m,

步骤3:高能球磨,将钍钨粉末放入含有聚氨酯内衬的球磨罐内高能球磨3-5h,球磨介质为钨球,球料比5:1, Step 3: high energy ball milling, the powder was placed in a ball mill thoriated tungsten tank containing a polyurethane liner 3-5h energy ball milling, the milling media is tungsten ball feed ratio of 5: 1,

步骤4:压制,采用等静压制,压制力为200MPa,获得单重1.6kg的钍钨条坯料, Step 4: pressing using isostatic pressing, the pressing force of 200MPa, to obtain 1.6kg singlet thoriated tungsten blank,

步骤5:烧结,将钍钨条坯料置于烧结炉内,采用直接通电垂熔烧结,烧结工艺为:经2分钟电流由O升至900A,再经18分钟电流上升至3100-3500A,再经20分钟电流升至4000A-4500A,得到密度在17.5-18g/cm3之间的垂熔条, Step 5: sintering, tungsten thorium blank placed in a sintering furnace, a sintered energizing direct sintering, the sintering process: O 2 minutes by the current raised to 900A, and then the current is increased to 18 minutes 3100-3500A, then by 20 minutes current rises 4000A-4500A, a sintered article having a density between 17.5-18g / cm3, and

步骤6:旋锻,采用旋锻机,把垂熔条从17_左右加工到直径3.3mm,在此过程中在9_和5mm各进行一次高温退火,退火温度为200(T2300°C之间,退火速度0.5-2m/min, Step 6: swaged, using the rotary swaging machine, a sintered article from the processing of about 17_ to 3.3mm diameter, once this high-temperature annealing process in each 9_ and 5mm, the annealing temperature is between 200 (T2300 ° C annealing speed of 0.5-2m / min,

步骤7:拉丝,将旋锻成3.3mm的掺杂钍钨条进入拉丝机拉丝,采用模序为: Step 7: drawing the swaged to 3.3mm thorium doped tungsten wire drawing into the drawing machine used for the motif:

2.8-2.4-2.0-1.52-1.24-1.08-0.93-0.77-0.7-0.63-0.57-0.51mm,得到掺杂钍钨黑 2.8-2.4-2.0-1.52-1.24-1.08-0.93-0.77-0.7-0.63-0.57-0.51mm, thorium doped tungsten obtain black

丝, wire,

步骤8:清洗,将直径0.51mm的钍钨黑丝经电解抛光至0.50mm,得到绕制微波炉磁控管的钍钨丝。 Step 8: washing, thoriated tungsten diameter of 0.51mm to 0.50mm electrolytically polished black silk, to give thoriated tungsten filament wound microwave magnetron.

[0013] 如附图1所示,采用本发明所述方法制备的钍钨丝内,氧化钍颗粒呈细小均匀地分布在钨基体上。 [0013] As shown in Figure 1, the tungsten thorium prepared using the method of the present invention, thorium oxide fine particles are uniformly distributed in the tungsten matrix.

[0014] 实施例2: [0014] Example 2:

一种用于绕制微波炉磁控管的钍钨丝的制造方法,包括以下步骤: A manufacturing method of tungsten wire wound thorium magnetron for a microwave oven, comprising the steps of:

步骤1:掺杂,将硝硝酸钍溶液、硝酸钾溶液、硅酸铝溶液与蓝钨粉在掺杂锅内固液混合烘干后,送入还原炉, Step 1: doping, the thorium nitrate solution, nitrate, potassium nitrate solution, aluminum silicate solution and blue-doped tungsten powder after drying pot solid-liquid mixture, into the reduction furnace,

步骤2:还原,采用5段控温的还原工艺对炉内原料进行还原处理,5段温度分别为5500C >650 0C >7500C >850 0C >9500C,每段保温时间均为60_80min,装舟量为300_350g/ 舟,还原气氛为氢气,氢气流量为3-5m3/h,还原得到含有微量钾兀素的娃鹤粉末,粉末细度范围为1.3-1.5 μ m, Step 2: Reduction using reduction process section 5 of the furnace feedstock temperature reduction treatment temperatures of 5 segments 5500C> 650 0C> 7500C> 850 0C> 9500C, holding time of each segment are 60_80min, an amount of loading the boat 300_350g / boat, a reducing atmosphere of hydrogen gas flow rate of 3-5m3 / h, is reduced to give a powder containing trace amount of potassium baby crane Wu pigment powder fineness in the range 1.3-1.5 μ m,

步骤3:高能球磨,将步骤2中获得的钍钨粉末放入含有聚氨酯内衬的球磨罐内高能球磨3-5h,球磨介质为钨球,球料比5:1, Step 3: high energy ball milling, obtained in Step 2 of thoriated tungsten powder into urethane-containing high energy ball milling tank liner 3-5h, milling media tungsten ball feed ratio of 5: 1,

步骤4:压制,将球磨后的粉料进行等静压制,压制力为200MPa,获得单重为1.6kg的钍钨条坯料, Step 4: compression, ball milling the powder after the isostatic pressing, the pressing force of 200MPa, to obtain a single weight 1.6kg thoriated tungsten strip blank,

步骤5:烧结,采用直接通电垂熔对钍钨条坯料进行烧结,烧结工艺为:经2分钟电流由O上升至900A,经18分钟电流上升至3100A-3500A,经20分钟电流上升至4000A-4500A,得到密度在17.5-18g/cm3之间的垂熔条, Step 5: sintering, a sintered by direct energization of thoriated tungsten bar stock is sintered, the sintering process is: the current increased from 2 minutes to O 900A, 3100A-3500A up to 18 minutes over current, over 20 min up to current 4000A- 4500A, a sintered article having a density between 17.5-18g / cm3, and

步骤6:旋锻,采用旋锻机,把垂熔条从17mm左右加工到直径3.7mm,中间在9mm和5mm各进行一次高温退火,退火温度为200(T2300°C之间,退火速度0.5-2m/min, Step 6: swaged, using the rotary swaging machine, a sintered article from the processing of approximately 17mm diameter 3.7mm, 5mm and 9mm in each intermediate between a high temperature for annealing, the annealing temperature is 200 (T2300 ° C, annealing rate 0.5 2m / min,

步骤7:拉丝,将旋锻成3.3mm的掺杂钍钨条进入拉丝机拉丝,采用模序为3.1-2.5-2.1-1.8-1.52-1.32-1.14-1.08-0.87-0.77-0.70 -0.63-0.57-0.51mm,最后得到掺杂钍钨黑丝, Step 7: drawing the swaged to 3.3mm thorium doped tungsten wire drawing into the drawing machine used for the motif 3.1-2.5-2.1-1.8-1.52-1.32-1.14-1.08-0.87-0.77-0.70 -0.63- 0.57-0.51mm, thorium doped tungsten finally obtained black silk,

步骤8:清洗,将直径0.51mm的黑丝经电解抛光至0.50mm,得到绕制微波炉磁控管的钍钨丝。 Step 8: washing, diameter 0.51mm 0.50mm black silk electrolytically polished to give thoriated tungsten filament wound microwave magnetron.

[0015] 采用本发明中提出的钍钨丝绕制成的微波炉磁控线圈经高温碳化后的显微结构如附图2所示,采用传统钍钨丝绕制成的微波炉磁控线圈经高温碳化后的显微结构如附图3所示,通过对比可知,本发明中提出的钍钨丝在碳化后的钨晶粒仍保持细小形式,传统钍鹤丝在碳化后广生了粗大的鹤晶粒。 [0015] The present invention proposes thorium tungsten wire around the magnetic coils are made of a microwave microstructure after high-temperature carbonization As shown in Figure 2, using a conventional high temperature microwave magnetic coils made of thorium tungsten wire wound microstructure carbonized 3 as shown in the figures, by comparing the above, the present invention proposes tungsten thorium remains in the form of fine grains of tungsten carbide after the conventional crane thorium carbide filaments after the coarse crane Kwong Sang grains.

[0016] 本发明在钍钨丝的制备过程中增加了高能球磨工序,通过高能球磨,一方面可以使还原得到氧化钍颗粒进一步细化和均匀分布在钨颗粒内部,另一方面还可以使钨颗粒进一步细化和增加钨晶粒内部的晶体缺陷,从而促进烧结,降低烧结温度,抑制氧化钍颗粒的粗化,通过采用以上措施,本发明具有以下有益效果:(I)通过本发明方法制备的钍钨丝,即使掺杂了0.0020-0.0080%的钾,氧化钍颗粒仍呈细小均匀分布。 [0016] The present invention increases during the preparation of the tungsten thorium high energy ball milling process, by high energy ball milling, one can obtain the reduced thoria particles further refine and uniformly distributed inside the tungsten particles, on the other hand it is also possible tungsten particles further refine and increase tungsten crystal defects inside crystal grains, thereby promoting sintering, the sintering temperature is lowered, suppressing coarsening of thorium oxide particles by using the above measures, the present invention has the following advantages: (I) prepared by the process of the present invention thorium tungsten wire, even if the doped 0.0020-0.0080% potassium, thorium oxide fine particles continued to show a uniform distribution. (2)本发明钍钨丝,在成分上含有微量元素钾,采用这种钍钨丝绕制的微波炉用磁控管线圈经高温碳化后,晶粒不易长大,能保持组织稳定,可保证生产完毕后包装、发货等运输流程不会出现因震动导致的脆断。 (2) thoriated tungsten filament of the present invention, the composition contains trace elements potassium, thorium tungsten wire using such a microwave oven with magnetron winding the coil at high temperature carbonization, grains grow easily, can maintain tissue stability, ensure after production packaging, shipping and other transportation process does not lead to brittle fracture due to vibration occurs.

Claims (3)

1.一种用于绕制微波炉磁控管的钍钨丝,其特征在于包括以下列各组分:氧化钍0.5-1.5%,钾0.0020-0.0080%,钨97-98%。 1. A method for microwave wound thoriated tungsten filament of the magnetron, characterized by comprising the following components: 0.5-1.5% thorium oxide, potassium 0.0020-0.0080%, 97-98% tungsten.
2.一种如权利要求1所述的钍钨丝的制造方法,其特征在于包括以下步骤: 步骤1:掺杂,向掺杂锅内加入硝酸娃溶液、硝酸钾溶液、娃酸招溶液与蓝鹤粉,通过固液混合烘干后,将原料送入还原炉, 步骤2:还原,原料置于还原炉内后采用5段控温的还原工艺,5段温度分别为550°C、650°C、750°C、85(TC、95(rC,每段保温时间均为60_80min,装舟量为300_350g/舟,还原气氛为氢气,氢气流量为3-5m3/h,还原得到含有微量钾兀素的娃鹤粉末, 步骤3:高能球磨,对步骤2中所得钍钨粉末进行酸洗后,放入含有聚氨酯内衬的球磨罐内高能球磨3-5h,球磨介质为钨球, 步骤4:压制,对球磨后的原料进行等静压制,获得钍钨条坯料,其中压制力为145-250MPa,钍钨条单重1.5kg-2.5kg 之间, 步骤5:烧结,将钍钨条坯料置于烧结炉内,采用直接通电垂熔烧结,烧结工艺为:2分钟内电流由OA上升 2. A method for producing thorium tungsten wire according to claim 1, characterized by comprising the following steps: Step 1: doping, doping is added to the pot baby nitrate solution, a potassium nitrate solution, baby move acid solution crane blue powder by drying the solid-liquid mixture, the raw material into the reduction furnace, step 2: reduction, placed in the reduction furnace feedstock employed in the reduction process temperature control section 5, section 5 temperatures of 550 ° C, 650 ° C, 750 ° C, 85 (TC, 95 (rC, each segment holding time are 60_80min, boat loading amount 300_350g / boat, a reducing atmosphere of hydrogen gas flow rate of 3-5m3 / h, containing traces of potassium is reduced to give Wu crane baby powder pigment, step 3: high energy ball milling, after thoriated tungsten powder obtained in step 2 pickling tank into the high energy ball milling liner comprises a polyurethane 3-5h, tungsten ball milling medium, step 4 : pressing, the raw material after isostatic pressing a ball mill to obtain a strip blank thoriated tungsten, wherein the pressing force of 145-250MPa, thorium tungsten singlet between 1.5kg-2.5kg, step 5: sintering, tungsten thorium blank placed in a sintering furnace, a sintered energizing direct sintering, the sintering process: a current rise within 2 minutes OA 900A,经18分钟电流上升至3100-3500A,再经20分钟电流上升至4000-4500A,得到密度在17.5_18g/cm3之间的垂熔条, 步骤6:旋锻,采用旋锻机,把垂熔条从17mm左右加工到直径3.3mm,在此过程中,在9mm和5mm各进行一次高温退火,退火温度为2000-2300°C之间,退火速度0.5-2m/min,步骤7:拉丝,旋锻成3.3mm的掺杂钍钨条进入拉丝机拉丝,采用模序为2.8 - 2.4-2.0 -1.52 -1.24-1.08-0.93-0.77-0.7-0.63-0.57 -0.51mm,最后得到掺杂钍钨黑丝,步骤8:清洗,将直径0.51mm的黑丝经电解抛光至0.50mm,得到绕制微波炉磁控管的钍钨丝。 900A, the current rising over 18 minutes to 3100-3500A, over 20 minutes at currents up to 4000-4500A, a sintered article having a density between 17.5_18g / cm3, and Step 6: swaged by spin forging machine, the vertical melt processed article from 17mm to about 3.3mm diameter, in this process, a high temperature annealing is performed in each of 5mm and 9mm, the annealing temperature is between 2000-2300 ° C, an annealing speed of 0.5-2m / min, step 7: drawing, swaged to 3.3mm thorium doped tungsten wire drawing into the drawing machine, using the motif of 2.8 - 2.4-2.0 -1.52 -1.24-1.08-0.93-0.77-0.7-0.63-0.57 -0.51mm, finally resulting doped thorium tungsten black silk, step 8: washing, diameter 0.51mm 0.50mm black silk electrolytically polished to give thoriated tungsten filament wound microwave magnetron.
3.根据权利要求2所述的一种钍钨丝的制造方法,其特征在于步骤2中获得的钍钨粉末的细度范围为1.3-1.5 μ m。 The method for producing a tungsten thorium according to claim 2, characterized in that the range of fineness thoriated tungsten powder obtained in step 2 is 1.3-1.5 μ m.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101074460A (en) * 2006-05-19 2007-11-21 天津市蓟县胜利钨钼制品加工厂 Method for processing tungsten alloy filament
WO2009013919A1 (en) * 2007-07-24 2009-01-29 Kabushiki Kaisha Toshiba Method for manufacturing coil member and coil member
CN101781731A (en) * 2010-03-09 2010-07-21 朱惠冲 Multi-element high-temperature resistant anti-shock magnetron cathode
CN102009179A (en) * 2010-09-30 2011-04-13 厦门虹鹭钨钼工业有限公司 Doping method for powder for magnetic control coil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101074460A (en) * 2006-05-19 2007-11-21 天津市蓟县胜利钨钼制品加工厂 Method for processing tungsten alloy filament
WO2009013919A1 (en) * 2007-07-24 2009-01-29 Kabushiki Kaisha Toshiba Method for manufacturing coil member and coil member
CN101781731A (en) * 2010-03-09 2010-07-21 朱惠冲 Multi-element high-temperature resistant anti-shock magnetron cathode
CN102009179A (en) * 2010-09-30 2011-04-13 厦门虹鹭钨钼工业有限公司 Doping method for powder for magnetic control coil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
许泉华: "特种用途金属卤化物灯的电极及制备", 《中国照明电器》, no. 4, 31 December 1998 (1998-12-31), pages 14 *

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