利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN101294776A 具有多孔铝芯的热管的制备方法 无效 - 驳回

具有多孔铝芯的热管的制备方法
摘要：
本发明属于热管技术领域，具体涉及具有多孔铝芯的热管的制备方法。具有多孔铝芯的热管的制备方法，其特征在于，它包括如下步骤：1)原料的选取：按5～40μm的NaCl颗粒所占重量百分比为58～62％，5～10μm的Al粉所占重量百分比为38～42％，选取NaCl颗粒和Al粉备用；2)将NaCl颗粒和Al粉混合，置于铝基板上，然后利用脉冲电流技术进行烧结，烧结工艺为13～17MPa预压力、烧结温度570～590℃，烧结时间3～5分钟，随后将烧结块体在水中煮35～50分钟，得到具有多孔铝芯的复合板；3)利用所制备的复合板焊接成平板热管，抽真空并通入工作介质，密封，得到热管。该方法制备的热管具有孔隙率高、孔径可控、连接紧密的特点。
摘要（英）：

The invention belongs to the technology field of a heat pipe, and particularly relates to a manufacturing method of the heat pipe with a porous aluminum core. The manufacturing method of the heat pipe with the porous aluminum core is characterized in that the method includes the following steps: (1) material selection: selecting 58-62 wt% of NaCl particles with the diameter being 5-40 Mum and 38-42 wt% of Al powder with the diameter being 5-10 Mum in reserve; (2) mixing the NaCl particles with the Al powder; placing on an aluminum substrate; and then sintering by employing the pulse current technique with the sintering technological parameters of the pre-pressure being 13-17 MPa, the sintering temperature being 570-590 DEG C and the sintering time being 3-5 minutes; and boiling sintering blocks in the water for 35-50 minutes to obtain composite plates with porous aluminum core; (3) welding the obtained composite plates into flat heat pipes, vacuumizing, inletting in the working medium and sealing to obtain the heat pipe. The manufacturing method is characterized by high porosity, controllable pore diameter and tight connection.

0/0