Method for sintering laser pipe cap

Abstract

The invention discloses a method for sintering a laser pipe cap. The laser pipe cap comprises a metal shell, glass and welding flux. The metal shell is installed as the cap body. A hole is formed in the top of the metal shell. Glass is inlaid in the hole. The glass is spherical. The gap between glass and the metal shell is filled with welding flux. Welding flux comprises glass powder and a carriersolvent. The initial state of welding flux is a flowing state. The method for sintering the laser pipe cap comprises the following steps that in a high-temperature sintering machine, welding flux iscoated on the gap between the metal shell and glass; and low-temperature roasting forming is conducted firstly, and then high-temperature sintering is conducted. According to the method for sinteringthe laser pipe cap, the temperature is easy to control, and temperature sensitivity is low; the shape of welding flux is easy to control, and a uniform streamline body can be kept by products after sintering is conducted; the sealing-connection yield is high; and laser pipe caps can be sintered in batches.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a sintering method of a laser tube cap. Background technique [0002] Pipe caps, also known as plugs, caps, etc., are pipe fittings that are welded on the pipe end or installed on the external thread of the pipe end to cover and block the pipe, and are used to close the pipeline. The head is similar to the pipe cap. They look very similar, but the difference between the pipe cap and the head is very large. The difference between the two mainly lies in the inner diameter and the scope of use. The pipe cap is just a plug for the pipe, and the DN exceeds 300. It is necessary to replace it with a head. If it is under pressure, it needs to be checked for strength; the size of the cap is relatively small, and it can be forged; the size of the cap is relatively large, and it is generally pressed with a steel plate. The head is used for the upper and lower parts or the left and righ...

AI Technical Summary

Problems solved by technology

[0004] The welding process of the glass body and the metal frame is strictly required, and special welding materials are required to ensure that the optical performance is not affected. At present, there are roughly two processes for making laser tube caps on the market. The first is molded packaging, and the second is Refueling ring packaging; molded packaging is the fusion of metal and glass materials at high temperatures, which is difficult to control the temperature, low sealing yield, and high material stress requirements; solder ring packaging is to melt the solder ring on the glass and metal materials. Some solder ring packages have the defects of difficult to control the shape of the solder, difficult batch operation, low yield rate, and easy to cause dirt