WO2015165278A1 - 半化学半机械密封式超低氧含量雾化设备 - Google Patents

半化学半机械密封式超低氧含量雾化设备 Download PDF

Info

Publication number
WO2015165278A1
WO2015165278A1 PCT/CN2015/000230 CN2015000230W WO2015165278A1 WO 2015165278 A1 WO2015165278 A1 WO 2015165278A1 CN 2015000230 W CN2015000230 W CN 2015000230W WO 2015165278 A1 WO2015165278 A1 WO 2015165278A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
semi
atomization
oxygen content
equipment
Prior art date
Application number
PCT/CN2015/000230
Other languages
English (en)
French (fr)
Inventor
施立新
施涧翀
Original Assignee
施立新
施涧翀
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 施立新, 施涧翀 filed Critical 施立新
Priority to EP15786038.8A priority Critical patent/EP3219419A4/en
Priority to AU2015252653A priority patent/AU2015252653A1/en
Publication of WO2015165278A1 publication Critical patent/WO2015165278A1/zh

Links

Classifications

    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
    • B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water

Definitions

  • the invention relates to a water atomization device, and more particularly to a water hydration or water gas atomization device for preparing metal and alloy powders, belonging to the genus The field of powder metallurgy equipment technology.
  • the water atomization device of the invention has the characteristics that the oxygen powder produced by the powder atomization device has a characteristic of between 50 and 500 PPB1 compared with the current domestic water atomization device.
  • water atomization equipment produced in the domestic market can be divided into two categories. One is called open type, and the other is closed-type manufacturer. It is a combination of high-pressure water-gas combination invented by Changsha Tuozhi Metal Materials Technology Co., Ltd. for the preparation of low-oxygen fine pre-alloyed powder. Method (Patent No.: CN201110076808. 4), the metal raw material can be melted into a liquid metal by an intermediate frequency melting furnace in an inert protective medium. The product has a low oxygen content, a fine particle size, a controlled particle morphology, and uniform composition without segregation.
  • inert gas protection system In the process of milling, in order to reduce the oxidation of metals and alloys and reduce the oxygen content of the powder, it is usually used to fog. A certain amount of inert gas is introduced into the tower for gas-weaving protection. The oxygen content of the sub-atomized product mainly comes from the 'casting process. Therefore, the powder produced by this equipment has an oxygen content of 10,000-3000 ppm. See the drawing of the manual],
  • the water atomization equipment produced by the company uses a beneficial method in the upper part of the melting chamber to try to block the air and molten metal to avoid oxidation of the gold melt.
  • the oxygen content of the product produced by this equipment is between 2000 and 3000 ppm. See Figure 2 of the manual.
  • the present invention employs semi-chemical such as reduction of CO or the like (or inert gas and vacuuming method, the latter two methods of oxygen containing fluorescing) and mechanical seals such as movement.
  • semi-chemical such as reduction of CO or the like (or inert gas and vacuuming method, the latter two methods of oxygen containing fluorescing)
  • mechanical seals such as movement.
  • the separator separates the enthalpy and the atomization chamber to reduce the oxygen content in the melting chamber.
  • the mechanical sealing method can completely separate the melting chamber and the smelting chamber.
  • the special sealing method allows the metal solution to enter the atomization chamber while Preventing the entry of water vapor into the melting chamber, avoiding possible explosions.
  • the powder material produced by the device has an oxygen content which is nearly an order of magnitude lower than that of the powder material produced by the above apparatus, and is between 50 and 500 ppm.
  • This project was officially approved by the Jinjiang Science and Technology Bureau of Fujian Republic in 2013 (2013J0107 Jincai Index 2013 No. 195). It is to be noted that the method of isolating the melting chamber and the atomizing chamber used herein is a moving partition. However, the isolation method included in this patent is not limited to the above one.
  • Figure 1-1 is a plan view of an open water atomization device
  • Figure 1-2 is a side view of the open water atomization device
  • the middle circle portion is a melting crucible, and it can be found that the melting crucible is directly connected to the outside air. Therefore, the oxygen content of the method is relatively high
  • FIG. 2-1 is a top view of the closed water atomizing device
  • FIG. 2 is a side view of the closed water atomizing device, comparing the middle circle melting of FIG. The ⁇ position, added a benefit, trying to separate the smelting crucible from the outside air.
  • Attached 3 is the water wheat equipment of the present invention, wherein FIG. 3-1 is a top view of the water atomizing device of the present invention, and FIG. 3-2 is a side view of the water atomizing device of the present invention, and the entire grinding equipment can be seen. They are all packed in a closed container, and the air in the container is evacuated by vacuuming, and then a reducing gas or an inert gas is charged as needed.
  • the smelting chamber can be completely separated from the outside, and the smelting crucible and the atomizing chamber can be completely segregated, and the reducing gas can eliminate a small amount of strontium in the melt. Therefore, the device is produced by using the device.
  • radon-containing powdery material which minimum specific example embodiments herein the reducing gas used is a gas and CO gas ⁇ ⁇ .
  • the present patent comprises a reducing gas is not limited to these two,
  • Example 1 In the apparatus of the present invention. Waste stainless steel was placed in a furnace, evacuated to 10 °Pa, and flushed into atmospheric pressure CO gas. Smelt to a certain temperature and atomize. The obtained powder was sieved, and its oxygen content was measured. And compared with the results obtained under the same conditions of the first two kinds of water atomization equipment. As a result, it was found that the stainless steel powder produced by the apparatus of the present invention has a surface oxygen content of only one-fiftieth of that of the sealed type equipment.
  • Example 2 In the apparatus of the present invention, a nickel piece was placed in a furnace, and it was taken to a temperature of 10 - ⁇ 3 , and it was flushed into a gas pressure of a large atmosphere. Smelt to a certain temperature and atomize. The obtained powder was sieved, and the oxygen contained therein was measured. And compared with the results obtained under the same conditions of the first two kinds of water atomization equipment. As a result, it was found that the nickel powder produced by the apparatus of the present invention has a surface enthalpy containing only one-twentieth of the sealing type equipment.

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

一种雾化设备，特别是一种水雾化或水气雾化设备，用于制备金属及合金粉末。1、采用半化学如加入CO等还原性气体及半机械密封如移动隔板的方式以降低熔炼室中氧含量；2、采用的机械密封方式能完全隔开熔炼室和雾化室；3、把熔炼设备装在密封的容器中，采用抽真空的方式抽走容器中的全部空气，并在必要时采用惰性气体或还原性气体来进行保护。

Description

半化学半机械密封式超低氧含量水雾化设备 技术领域 本发明涉及一种水雾化设备，特别是涉及一种水棼化或水气雾化设备，用于制备金属及合金 粉末， 属粉末冶金设备技术领域。 采用本发明的水雾化设备， 与目前国内的水雾化设备相比， 具有安全， 生产出来的粉束其氧含量具有在 50至 500PPB1之间的特点。
背景技术 低瓴含量水雾化设备已见文献报道， 根据福建省科技信息研究所出具的科技査新报吿 GN20i2fjl61 :菜芜钢铁集团粉末冶金有限公司李普明等人发明的水雾化合金钢粉的制造方法（专利号： CN02149116. X) , 在水雾化、 干燥、 高滠还原工序均采取了惰性气体保护措施， 有利于控制产品中的氧含 量， 从而使该制造方法在不采用真空退火炉处理的愦况下仍能使氡含量控制在 0. 15%左右， 生产出髙质量 的最终产品， 简化了生产操作程序， 节省了投资， 降低了成本. 日本川崎制铁股份有限公司发明的水力雾 化之铁粉及其制法 (专利号： TW083104452) , 其制得的产品氧含量系 1. 0wt¾左右。
目前国内市场内生产的水雾化设备可分为两类。一种称为敞开式， 另一种是封闭式 生产厂家分别为 湖南久泰及邯郸兰德等.长沙拓智金属材料科技有限公司发明的高压水气组合雾化制备低氧含量微细预合 金粉的方法（专利号： CN201110076808. 4), 可在惰性保护性介质中用中频熔炼炉将金属原料熔融成液体 金属， 其产品氧含蠶低、 粒度微细、 颗粒形貌可控， 成份均匀无偏析。 湖南省久泰科技有限公司幵发的^ 压水雾化制粉设备， 具有惰性气体保护系统： 在制粉的过程中， 为减小金属及合金的氧化， 降低粉末的氧 含量，通常采用向雾化塔内通入一定量惰性气体进行气织保护，由子雾化产品的氧含 ¾主要来自 '烙炼过程， 因此， 采用这种设备生产的粉末氧含量在 10000- 3000ppm之间。 见说明书附图】，
邯郸兰德公司生产的水雾化设备则把熔炼室坩埚上部采用加益的办法以试图隔幵空气和熔融的金属， 避免金屆熔体的氧化。但由于上部加茧的办法并不能充全把熔炼坩锅与外部的空气隔开， 因此这种设备生 产出来的产品氧含量在 2000-3000ppm之间。 见说明书附图 2。
发明内容 为进一歩降低氧含量， 区别于上述设备， 本发明采用半化学如加入 CO等还原性（或惰性的 气体及抽真空的方法， 后两方法氧含萤略髙）及机械密封如移动隔板隔离搏炼窒与雾化室的方式以降低熔 炼室中氧含量 · 所采用机械密封方式能完全隔离熔炼室和裟化室， 特殊的密封方式具备允许金属溶液进入 雾化室同时又可防止水汽等进入熔炼室的特点， 避免了可能发生的爆炸. 由于能完全把培炼室与外部的空 气隔幵， 同时又能完全隔离熔炼室和雾化室， 见附图 3, 因此， 采用本设备生产出来的粉末材料其氧含量 比上述设备生产的粉末材料^含萤降低近一个数量级， 在 50至 500ppm之间。 此项目于 2013年获福建省 晋江市科技局正式立项 （2013J0107晋财指标 2013年 195号文）。 需要声明的是， 此处举例所用的隔离熔 炼室和雾化室的方法为移动隔板。 但本专利所包括的隔离方法并不局限于上述这一种。
附阁说明 附图 1-1为敞开式水雾化设备的俯视图， 附图 1-2为敞开式水雾化设备的侧视图,中间圆圈 部分为熔炼坩埚， 可以发现熔炼坩埚直接与外部空气相通 因此， 此方法氧含量较髙， 附图 2-1为封闭式 水雾化设备的俯视图，附图^ 2为封闭式水雾化设备的侧视图,对比附图 1-1的中间画圈熔炼坩埚位置， 上 面加了个益， 试图隔开熔炼坩埚与外部空气.但是， 这种方法并不能完全把熔炼室与外部的空气隔开， 坩 埚上部与盞之 1 仍留有间隙. 有部分.空气中的鲺会进入焰炼坩埚中。 因此， 采用此设备 ΐ产的粉末其氧 含罱仍较商。附 3为本发明的水麥 ½设备， 其中附图 3-1为本发明水雾化设备的俯视图，附图 3-2为本 发明水雾化设备的侧视图， 可以看到整个瑢炼设备都被装入一个密闭容器中， 采用抽真空的方式抽走容器 内的空气， 然后视需要充入还原性气体或惰性气体。这样既能完全把嬸炼室与外部的交气隔幵， 又能宪全 隔离熔炼窒和雾化室， 同时还原性气体又能消除熔体中的少量茕. 因此， 采用本设备生产出来的粉末材料 其氡含 最低， 具体实施方式此处举例所用的还原性气体为 CO气体和 ΝΗΛ气体. 但本专利所包括的还原性气体并不 局限于上述两种，
1
替换页（细则第 26条) 实施例 1: 在本发明的设备内. 把废不锈钢加入炉中， 抽真空至 lO^Pa, 沖入一大气压 CO气体。熔炼 至一定温度， 雾化。 所得到的粉末进行筛分， 测定其氧含是。 并且与前两种水雾化设备在相同条件下所得 结果进行对比。 结果发现， 采用本发明设备生产的不锈钢粉其表面氧含量仅为封团式设备的五十分之一。
实施例 2: 在本发明的设备内， 把镍片加入炉中， 抽真交至 10—ΐ3， 冲入一大气压 ΝΗ、，气体。熔炼至一 定温度， 雾化。 所得到的粉末进行筛分， 测定其氧含萤。 并且与前两种水雾化设备在相同条件下所得结果 进行对比。 结果发现， 采用本发明设备生产的镍粉其表面氡含跫仅为封团式设备的二十分之一。
2
替换页（细则第 26条)

Claims

权 利 要 求 书 本发明专利涉及一种雾化设备，特别是涉及一种水雾化或水气雾化设备。 1本设备必须同时包括如下三点的技术特征。
( 1 ) 本设备具有采用半化学如加入 CO等还原性气体 （包括加入惰性的气体或 直接抽真空， 但会导致氧含量略高） 及半机械密封如采用移动隔板的方式以降 低熔炼室中氧含量的特点。
(2) 本设备采用机械密封方式以隔幵熔炼室和雾化室。 该密封方式具备允许金 属溶液进入雾化室同时又可防止水汽进入熔炼室的特点， 避免了可能发生爆炸。 同吋避免了雾化室中的水气进入熔炼室， 以免影响抽真空。
(3 ) 本设备具有把熔炼设备装在密封的容器中的特点。 然后采用抽真空的方式 抽走熔炼室的全部空气， 并在必要时采用惰性气体或还原性气体来进行保护。
2 说明书中举例所用的还原性气体为 CO气体和 NH3气体。 但本专利所包括的 还原性气体并不局限于上述两种。
3 用来完全隔开熔炼室和雾化室的方法并不局限于说明书中所举例的采川移动
PCT/CN2015/000230 2014-04-30 2015-04-02 半化学半机械密封式超低氧含量雾化设备 WO2015165278A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15786038.8A EP3219419A4 (en) 2014-04-30 2015-04-02 HALF-CHEMICAL, HALF-MECHANICAL SEALED SPRAYING DEVICE WITH EXTREMELY LOW OXYGEN CONTENT
AU2015252653A AU2015252653A1 (en) 2014-04-30 2015-04-02 Semi-chemical semi-mechanical sealed ultra-low oxygen content atomizing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410188894.1A CN105014086A (zh) 2014-04-30 2014-04-30 半化学半机械密封式超低氧含量雾化设备
CN201410188894.1 2014-04-30

Publications (1)

Publication Number Publication Date
WO2015165278A1 true WO2015165278A1 (zh) 2015-11-05

Family

ID=54358136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/000230 WO2015165278A1 (zh) 2014-04-30 2015-04-02 半化学半机械密封式超低氧含量雾化设备

Country Status (4)

Country Link
EP (1) EP3219419A4 (zh)
CN (1) CN105014086A (zh)
AU (1) AU2015252653A1 (zh)
WO (1) WO2015165278A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746648A (zh) * 2018-07-10 2018-11-06 北京中材人工晶体研究院有限公司 一种合成金刚石用合金触媒粉末的装备及工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006127792A2 (en) * 2005-05-26 2006-11-30 Crucible Materials Corporation Cold wall induction nozzle for induction melting apparatus
CN2855596Y (zh) * 2004-10-26 2007-01-10 上海申建冶金机电技术有限公司 全连续真空氩熔炼高压隋性气体雾化制粉装置
WO2010077736A2 (en) * 2008-12-09 2010-07-08 United Technologies Corporation A method for producing high strength aluminum alloy powder containing l12 intermetallic dispersoids
CN103611942A (zh) * 2013-12-10 2014-03-05 河北联合大学 高压熔炼雾化氮淬装置及其生产钐铁氮合金粉末的方法
CN104232898A (zh) * 2014-07-21 2014-12-24 湖南久泰冶金科技有限公司 一种连续化生产的真空或气体保护冶炼浇注设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2384892A (en) * 1942-05-28 1945-09-18 F W Berk & Company Method for the comminution of molten metals
US4385929A (en) * 1981-06-19 1983-05-31 Sumitomo Metal Industries Limited Method and apparatus for production of metal powder
US5084091A (en) * 1989-11-09 1992-01-28 Crucible Materials Corporation Method for producing titanium particles
JP2001271103A (ja) * 2000-03-28 2001-10-02 Fuji Electric Co Ltd 金属粉末作製方法
CN1410208B (zh) * 2002-11-25 2011-01-19 莱芜钢铁集团粉末冶金有限公司 水雾化合金钢粉的制造方法
CN1475318A (zh) * 2003-01-27 2004-02-18 李文漫 金属粉真空气体喷粉装置
JP2006063357A (ja) * 2004-08-24 2006-03-09 Daido Steel Co Ltd 水アトマイズ法による金属粉末の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2855596Y (zh) * 2004-10-26 2007-01-10 上海申建冶金机电技术有限公司 全连续真空氩熔炼高压隋性气体雾化制粉装置
WO2006127792A2 (en) * 2005-05-26 2006-11-30 Crucible Materials Corporation Cold wall induction nozzle for induction melting apparatus
WO2010077736A2 (en) * 2008-12-09 2010-07-08 United Technologies Corporation A method for producing high strength aluminum alloy powder containing l12 intermetallic dispersoids
CN103611942A (zh) * 2013-12-10 2014-03-05 河北联合大学 高压熔炼雾化氮淬装置及其生产钐铁氮合金粉末的方法
CN104232898A (zh) * 2014-07-21 2014-12-24 湖南久泰冶金科技有限公司 一种连续化生产的真空或气体保护冶炼浇注设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3219419A4 *

Also Published As

Publication number Publication date
CN105014086A (zh) 2015-11-04
EP3219419A1 (en) 2017-09-20
AU2015252653A1 (en) 2017-01-05
EP3219419A4 (en) 2019-02-27

Similar Documents

Publication Publication Date Title
CN105618776A (zh) 一种高氮不锈钢球形粉末的制备方法
MX2010002267A (es) Proceso para preparar polvo de suboxidos de niobio o niobio.
CN104070173B (zh) 球形钨粉的制备方法
CN104889399B (zh) 粉末冶金工艺制备耐磨耐蚀合金管件的方法
WO2015165278A1 (zh) 半化学半机械密封式超低氧含量雾化设备
CN104858444B (zh) 一种低氧含锰水雾化钢粉的还原工艺
CN104493155A (zh) 一种CuSn10合金青铜粉的制作方法
JP7242855B2 (ja) 水噴霧法による金属粉末の製造方法
CN102978340A (zh) 一种炼钢脱氧剂及其制备方法
CN107904410B (zh) 一种复合脱气剂制备高温合金和靶材专用高纯金属铬的生产方法
CN110819809B (zh) 一种废储氢合金粉末回收方法
JP5661540B2 (ja) 酸素含有量が低いＣｕ−Ｇａ系合金粉末、Ｃｕ−Ｇａ系合金ターゲット材、およびターゲット材の製造方法
CN109694969B (zh) 一种预合金粉末及添加预合金粉末的TiCN基金属陶瓷复合材料及其制备方法
CN104162678B (zh) 一种利用晶间腐蚀制备高压缩性水雾化不锈钢粉的方法
CN103658669B (zh) 一种压缩机平衡块生产用合金粉末的制备方法
CN107176850A (zh) 一种防粘粉末涂料及其制备方法
CN103042210B (zh) 一种高压锰球的制备方法
TW201501840A (zh) 含鐵及鉬之粉壓坯
CN113088828B (zh) 一种高Mn高Al钢及其真空熔炼工艺
EP2940155A1 (en) Apparatus and method for processing molten iron
CN104894457B (zh) 粉末冶金工艺制备工具钢的方法
CN208696305U (zh) 一种合成金刚石用合金触媒粉末的装备
CN101596599A (zh) 一种水作研磨介质混合料制备新工艺
CN102839289A (zh) 射频电缆带熔铸过程中控制氧含量的操作方法
CN101274369B (zh) 一种铜基合金/铁基马氏体合金复合粉体及其制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15786038

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017512086

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015786038

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015786038

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2015252653

Country of ref document: AU

Date of ref document: 20150402

Kind code of ref document: A