A kind of internally threaded copper tube for radio frequency cable and its preparation process
A technology for radio frequency cables and preparation processes, which is applied in the field of internally threaded copper pipes for radio frequency cables and its preparation, which can solve the problems of poor softness of smooth copper pipes, and achieve the effects of optimized processing technology, low oxygen content, and improved processing efficiency
Active Publication Date: 2018-09-28
ZHONGTIAN ALLOY TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide an internally threaded copper tube for radio frequency cables, in which a threaded structure is added to replace the existing smooth copper tube, which can effectively solve the problem of poor flexibility of the smooth copper tube. Through the optimization of the processing technology, the copper tube per meter The weight has been reduced by 15%, the mechanical performance has been increased by 5%, and the electrical performance has been increased by 3%, which improves the stability of product performance and reduces production costs
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[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments.
[0032] Such as Figure 1~2 As shown, a kind of internally threaded copper pipe for radio frequency cables disclosed by the present invention has thread teeth on its inner wall, the outer diameter D of the threaded pipe is 12.7mm, the bottom wall thickness Tw is 0.30mm, and the number of teeth of the thread teeth is 30. The thickness Ht is 0.20mm, the tooth pitch is 0.63mm, the addendum angle α is 50°24′, and the helix angle β is 45°.
[0033] A preparation process of an internally threaded copper tube for radio frequency cables disclosed by the present invention specifically includes the following steps:
[0034] a. Upward leading continuous casting lead pipe: use high-purity cathode copper as raw material, put it into the melting furnace for melting, keep the melting temperature at 1160-1180°C, add graphite carbon powder with a th...
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Abstract
The invention discloses a preparation process for an internal thread copper pipe for a radio frequency cable. The preparation process includes the following steps of up leading of a continuous casting leading pipe, pipe blank rolling, jiggering, inner wall cleaning, online induction annealing, internal thread forming, compound winding, pit type furnace annealing, tray reversing, packaging and warehousing. The copper pipe, prepared through the preparation process, with an internal thread replaces an existing smooth copper pipe, and the problem that the original smooth copper pipe is poor in softness is solved; and meanwhile, compared with the original smooth copper pipe, the meter gram weight is reduced by 15%, the mechanical performance is improved by 5%, the electrical performance is improved by 3%, and the production cost is reduced while the product performance stability is improved.
Description
technical field [0001] The invention relates to a method for preparing a copper pipe, in particular to an internally threaded copper pipe for a radio frequency cable and a preparation process thereof. Background technique [0002] Radio frequency cable is a kind of radio frequency transmission line that transmits radio frequency signals, and has been widely used in radio communication and broadcasting, television, radar, navigation, computer, instrumentation, etc. Tubular conductor is the main structural form adopted by the inner conductor of low-attenuation high-power cables with air and semi-air insulation in radio frequency cables. In view of the skin effect at high frequencies, the current at high frequencies only flows in a very thin layer on the surface of the conductor , so as long as the wall of the tubular conductor is 4-5 times larger than the penetration depth of the current, smooth copper tubes are often used as the inner conductor material in the original radio ...
Claims
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IPC IPC(8): B21C37/06
CPCB21C37/06
Inventor 陈爱华王英华张洪岩缪华张达谢友刚陈荣荣
Owner ZHONGTIAN ALLOY TECH