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A method of manufacturing a power semiconductor tube shell

A technology of a semiconductor tube and a manufacturing method, which is applied in the field of the manufacture of power semiconductor tubes, can solve the problems of high sealing stress, failure of semiconductor devices, and inability to meet the requirements of high-end customers.

Active Publication Date: 2014-10-22
福建海鼎盛特种陶瓷有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the cathodes of power semiconductor tube shells are made of copper body and flange copper skin welded at high temperature. There is a problem of high sealing stress. Under the condition of long-term load work, the airtightness of the tube shell device will decrease, so that lead to premature failure of semiconductor devices
At the same time, it is difficult to ensure the consistency of concentricity between the flange and the copper body during welding, which cannot meet the requirements of high-end customers

Method used

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  • A method of manufacturing a power semiconductor tube shell
  • A method of manufacturing a power semiconductor tube shell
  • A method of manufacturing a power semiconductor tube shell

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Embodiment Construction

[0015] A method for manufacturing a power semiconductor tube shell according to the invention is characterized in that the process includes: blanking-annealing-swing milling-machining-annealing-stamping. a. The blanking is to pass the copper rods of relevant specifications through the cutting machine to become small copper blocks of fixed length. b. The annealing refers to the high temperature treatment of the copper block to reduce the hardness of the copper block and achieve the purpose of reducing the forming force of the pendulum mill; if the copper piece is small in size, this process is not required. c. The above-mentioned pendulum mill, that is, by changing the traditional pendulum mill, it is designed and transformed so that the angle of the pendulum mill is 1-10° required by the product. The punch on the ball head makes a pure swing on the central axis generatrix in a circular trajectory. The blank to be processed is placed in the lower die on the slider, and the wor...

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Abstract

The invention discloses a method for manufacturing a power semiconductor tube, which relates to manufacturing process of a cathode of a power semiconductor tube. The method for manufacturing the power semiconductor tube includes (1), sawing a copper bar into copper blocks; (2), processing the copper blocks at high temperature; (3), realizing swing grinding process for the copper blocks processed at high temperature to form a copper body with an extending flange; (4), processing and removing an oxide scale of a formed workpiece and improving dimensional precision of the formed workpiece by the aid of a CNC (computerized numerical control) lathe; and (5), punching the processed workpiece with final geometric dimensions.

Description

technical field [0001] The invention relates to a manufacturing method of a power semiconductor tube shell. The power semiconductor shell produced by this process has the advantages of high production efficiency, high air tightness and high structural strength. Background technique [0002] Power electronics technology is a modern high-efficiency energy-saving technology, an important interface between the information industry and traditional industries, a bridge between weak current control and controlled strong current, and a basic technology that supports the development of multiple high technologies in a very wide range of fields. . Among them, high-power power semiconductor devices are the core converter components of power generation, power distribution, power transmission, power consumption, and energy storage. They can accurately and efficiently control and transform current, voltage, power, and frequency, and are used for power distribution, power conversion, Elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00H01L21/48
Inventor 郑维舟
Owner 福建海鼎盛特种陶瓷有限公司
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