Connecting ring forming and bonding method
A bonding method and a technology of connecting rings, which are applied in the direction of radiation unit covers, household components, household appliances, etc., can solve the problems of not being able to better adapt to the lightweight development requirements of high-speed aircraft, not suitable for high temperature use, and high material density. , to achieve good connection matching, reduce weight and high efficiency
Pending Publication Date: 2022-03-08
湖北三江航天江北机械工程有限公司
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Problems solved by technology
The ceramic cover body is mainly quartz ceramics or quartz composite ceramics, which have low expansion (10 -6 / ℃) performance, in order to ensure the thermal matching performance, the traditional connecting ring is mainly made of low-expansion Invar alloy material (10 -6 / °C), Invar alloy material has excellent low expansion properties, but its material density is high (8.1g / cm 3 ), cannot better adapt to the development requirements of lightweight high-speed aircraft, and the linear expansion increases sharply above high temperature (200°C), so it is not suitable for high temperature use
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[0027] Such as figure 1 The connecting ring forming and bonding method shown includes the connecting ring 1 and the ceramic cover body 2, and the forming method includes the following steps:
[0028] 1) According to figure 1 The size of the inner surface of the connecting ring 1 is processed by processing the left winding mandrel 3 and the right winding mandrel 4, the outer surface of the left winding mandrel 3 and the right winding mandrel 4 are consistent with the inner surface of the connecting ring 1, The end face of the left winding mandrel 3 has a protrusion 5 with an external thread facing outward, the end face of the right winding mandrel 4 has a groove 6 with an internal thread facing inward, and the protrusion 5 of the left winding mandrel 3 is screwed into the right winding core In the groove 6 of mold 4, left winding mandrel 3 and right winding mandrel 4 are connected into integral winding mandrel, as figure 2 shown;
[0029] Both the left winding mandrel 3 and...
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Abstract
The connecting ring forming and bonding method comprises the steps that a connecting ring and a ceramic cover body are included, a left winding core mold and a right winding core mold are machined according to the size of the inner molded surface of the connecting ring, and a prefabricated blank is formed through winding; cutting off the two ends of the pre-cured prefabricated blank to obtain a pre-cured connecting ring; curing to obtain the whole connecting ring; and the two connecting rings bonded with the ceramic cover bodies are obtained. The weight of the connecting ring is reduced by more than 80% compared with that of a traditional invar alloy connecting ring, and the weight of the aircraft is greatly reduced; the ceramic cover can be used for a long time at the temperature of 280 DEG C, has low linear expansion at the high temperature, and can have good connection matching performance with a quartz ceramic cover body. The connecting ring can be formed in a near-net size mode, two connecting rings can be manufactured at a time, the connecting ring and the ceramic cover body can be integrally formed in an adhesive mode at a time, and efficiency is high.
Description
technical field [0001] The invention belongs to the technical field of aerospace special composite materials, and specifically refers to a connecting ring forming and bonding method. Background technique [0002] Ceramic radomes are mainly used in aerospace vehicles to protect radars from working normally in harsh environments with high temperature and high speed. With the development of aerospace technology, aerospace vehicles are developing in the direction of high Mach, long endurance, and light weight. The high-temperature environment and light weight requirements brought about by high-speed and long-time flight have brought great challenges to radome materials. challenge. [0003] The most widely used high temperature radome is the ceramic radome, which mainly consists of two parts: a ceramic radome and a connecting ring. The ceramic cover body is mainly quartz ceramics or quartz composite ceramics, which have low expansion (10 -6 / ℃) performance, in order to ensure ...
Claims
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IPC IPC(8): B29C70/32B29C70/34B29C70/84H01Q1/42C08G73/12B29K709/02B29L31/34
CPCB29C70/32B29C70/34B29C70/84H01Q1/42C08G73/12B29K2709/02B29L2031/3456
Inventor 吴广力陈海昆贾曼莉任海成李天明
Owner 湖北三江航天江北机械工程有限公司