CN110267761A - 生产钛粉的设备和方法 - Google Patents

生产钛粉的设备和方法 Download PDF

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CN110267761A
CN110267761A CN201780079274.6A CN201780079274A CN110267761A CN 110267761 A CN110267761 A CN 110267761A CN 201780079274 A CN201780079274 A CN 201780079274A CN 110267761 A CN110267761 A CN 110267761A
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titanium
titanium alloy
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威廉·迈克尔·哈努塞克
戴尔·R.·麦克布莱德
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Carpenter Technology Corp
Puris LLC
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    • 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
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    • B22F2009/0888—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 casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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    • B22F2009/0896—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 particle transport, separation: process and apparatus
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Abstract

用于从熔化物生产钛金属粉末的方法和设备。该设备包括具有内壁的雾化室，该内壁涂有与钛金属粉末一致的钛合金或整体由与钛金属粉末一致的钛合金形成，以避免其中钛金属粉末受到污染。在雾化室之后的流路中的设备的一些或所有组件的内表面涂有钛合金或纯钛，或者整体上用钛合金或纯钛形成。

Description

生产钛粉的设备和方法
相关申请的交叉引用
本申请要求2016年12月21日递交的名称为“生产钛粉的设备和方法”的临时专利申请No.62/437,129的优先权。
技术领域
本申请涉及一种生产钛粉的设备和方法，特别是涉及避免污染钛粉的设备和方法。
背景技术
在用于诸如航空航天之类的关键应用的用钛制成的部件的生产中，粉末冶金是很重要的技术。钛金属粉是这种加工路径中的基本原料。生产具有高填充密度的均匀的球状粉末的一种常用方法是使用诸如氩之类的惰性气体的雾化。用于气体雾化的一种典型装置包括液态金属流供给源、雾化气体射流以及冷却室。熔融钛的自由下落流受到惰性气体射流高速冲击，钛的雾化液滴在飞过腔室时凝固，并且聚集到腔室的底部。为了得到非常确切的受控结构，在液滴凝固期间冷却速率为极高值是期望的。雾化室的设计和构造的一些方面很重要：
1.腔室必须用不会与钛接触反应的材料构成；
2.腔室必须足够大，以使钛液滴能在与腔室的壁或底部部分相接触之前凝固；
3.腔室应能完全排空以避免大气污染；以及
4.腔室应设计为容易接近用以彻底清洁和检查其内部。
不锈钢是构建钛雾化室最常用的材料。也有一种可能，一些钛液滴会在凝固之前撞到雾化室。这些液滴与不锈钢发生反应产生脆性性质的低熔点化合物。这些化合物作为污染物进入钛粉流并且在标准质量控制技术中保持未被发现。用这些受污染的粉末制成的组件会出现灾难性的工作故障。
发明内容
根据本发明，通过为金属粉末流路加衬或者制作雾化阶段以后的金属粉末流路为产生不污染金属粉末的金属，可消除粉末金属污染。
在钛金属粉末的情况下，雾化室的壁优选为加衬的或者用和钛金属粉末一致的钛合金制作。例如，诸如Ti-6Al-4V之类的钛合金可用于衬里或腔室壁，如果正在生产的钛粉金属是Ti-6Al-4V的话。
该方案适于生产任何粉末金属的系统，由于腔室清洁操作中会产生金属污染，特别是适用于从熔化物生产金属粉末，因为这种方法偶尔会出现粉末球到腔室壁粘结。
从熔化物雾化包括气体雾化(GA)，其中金属的熔融流被高速惰性气体射流冲击以形成粉末，还包括旋转电极法(PREP)，其中金属棒的末端熔化而该棒快速旋转甩出金属液滴。
不论是哪种情况，熔化可通过电子束、等离子体炬、电弧、感应加热、激光加热或其它任何足够强效的加热方法实现。
附图说明
图1为用于生产钛粉的设备的一部分的示意图。
具体实施方式
参见图1，用于生产钛粉的设备10包括用于接收从已知系统供给的雾化液态金属流的雾化或热喷涂室12，已知系统例如是冷壁感应引导系统、电极感应熔炼气雾化法、等离子熔炼感应引导气雾化法、三重熔融法或任何其它已知系统。来自雾化室12的粉末通过输送管14，通过旋风分离器16，接着进入粉末容器18，如图1所示。
根据本发明，雾化室12的整个内表面20涂有和由包括如前文所述的钛粉金属的熔化物生产出的钛金属粉末相同的钛合金或由该钛合金形成。作为阐述性示例，雾化室12的内表面20上的钛合金涂层的厚度可为约2mm。雾化室可由任何合适的材料形成，例如不锈钢。作为选择，雾化室12可由钛合金形成，而不是由其它材料形成的内表面上的合金涂层。
为了进一步防止钛粉受到污染，雾化室12之后的全部或部分流路可涂有与钛粉一样的钛合金或可购得的纯钛(CP-Ti)，或由其形成。例如，输送管14、旋风分离器16和/或粉末容器18中的一个或多个可由钛合金或CP-Ti形成，或内部涂有钛合金或CP-Ti，以避免钛粉受到任何污染。
作为阐述性示例，钛合金，例如Ti-6Al-4V，可用于雾化室12中衬里或腔室壁20以及随后的所有或部分流路，如果正在处理的钛粉金属是Ti-6Al-4V的话。
虽然本发明已结合目前被认为是最实用和优选的实施例进行描述，但应当理解的是，本发明不限于本文所公开的实施例，而是相反地旨在涵盖在所附权利要求的精神和范围内所包括的各种修改和等同设置。

Claims (8)

1.用于从包括钛粉金属的熔化物生产钛金属粉末的设备，包括雾化室，所述雾化室具有内壁，所述内壁涂有与所述钛金属粉末一致的钛合金或整体由与所述钛金属粉末一致的钛合金形成，以避免其中钛金属粉末受到污染。
2.如权利要求1所述的设备，进一步包括粉末输送管、旋风分离器以及粉末容器，所述粉末输送管连接至所述雾化室的出口，所述旋风分离器连接至所述粉末输送管，以及所述粉末容器连接至所述旋风分离器，并且其中所述输送管、所述旋风分离器和/或所述粉末容器中的一个或多个的内表面涂有钛合金或纯钛，或整体由钛合金或纯钛形成。
3.如权利要求1所述的设备，其中所述雾化室的所述内壁涂有厚度约2mm的钛合金。
4.用于在从包括钛粉金属的熔化物生产钛粉的设备中避免钛粉受到污染的方法，所述设备包括具有内壁的雾化室，所述方法包括在所述内壁涂有与所述钛粉一致的钛合金或整体由与所述钛粉一致的钛合金形成所述内壁。
5.如权利要求4所述的方法，其中所述内壁上的钛合金涂层约为2mm。
6.如权利要求4所述的方法，其中所述设备在所述雾化室之后的流路中进一步包括输送管、旋风分离器以及粉末容器，并且所述输送管、所述旋风分离器和/或所述粉末容器中的一个或多个的内表面涂有钛合金或纯钛，或整体上由钛合金或纯钛形成所述内表面。
7.从熔化物生产钛金属粉末的设备，其中熔融钛流在具有内壁的雾化室中被惰性气体高速冲击，并且所述内壁涂有与所述钛金属粉末一致的钛合金或整体由与所述钛金属粉末一致的钛合金形成，以避免所述金属粉末受到污染。
8.如权利要求4所述的方法，进一步包括在所述雾化室之后的流路中的所述设备的一个或多个组件的内表面涂有钛合金或纯钛，或者整体上用钛合金或纯钛形成所述内表面。
CN201780079274.6A 2016-12-21 2017-05-09 生产钛粉的设备和方法 Pending CN110267761A (zh)

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US201662437129P 2016-12-21 2016-12-21
US62/437,129 2016-12-21
US15/588,993 2017-05-08
US15/588,993 US10583492B2 (en) 2016-12-21 2017-05-08 Titanium powder production apparatus and method
PCT/US2017/031685 WO2018118108A1 (en) 2016-12-21 2017-05-09 Titanium powder production apparatus and method

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CN103302296A (zh) * 2012-03-08 2013-09-18 Fmw合成物系统公司 钛粉的生产装置及方法
CN104475743A (zh) * 2014-11-25 2015-04-01 北京康普锡威科技有限公司 一种微细球形钛及钛合金粉末的制备方法
CN204449311U (zh) * 2015-01-30 2015-07-08 陕西维克德科技开发有限公司 用于制备细粒径低氧球形钛及钛合金粉末的装置

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MX2019007355A (es) 2019-08-16
US10583492B2 (en) 2020-03-10
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