A kind of glass powder filling coating method
A technology of glass powder and coating, which is applied to thermometers, instruments, thermometers, etc. that are directly sensitive to heat and electric/magnetic components, and can solve problems such as many ends of glass powder, porcelain tubes that cannot be fixed on the shell, and porcelain tubes broken. , to achieve the effect of high structural strength
Active Publication Date: 2017-07-14
SUZHOU CHANGFENG AVIATION ELECTRONICS
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Problems solved by technology
[0003] Both methods have a common disadvantage: there are many ends of the glass powder, and there is little or no lower end; the glass powder is usually attached to one side of the porcelain tube
The existence of these shortcomings makes the porcelain tube unable to be fixed well with the shell, resulting in the breakage of the porcelain tube during the use of the product, which in turn leads to the broken wire
Method used
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[0016] The invention provides a glass powder filling and coating method, which is applied to assembled thermocouple sensors, such as figure 1 As shown, the assembled thermocouple sensor includes a casing 2, a porcelain tube 3 pierced through the casing 2, and a couple wire 4 arranged in the porcelain tube 3, and the gap between the casing 2 and the porcelain tube 3 and the porcelain tube is The glass powder sintered layer 1 after the glass powder is sintered, the specific coating method comprises the following steps:
[0017] a. In the mixing step, the glass powder is mixed with epoxy resin and stirred to form a colloidal mixture. The colloidal mixture has a little viscosity and will not deform for a short period of time;
[0018] b. In the coating step, the colloidal mixture is evenly coated on the surface of the porcelain tube, especially some gaps and complicated positions need to be paid attention to to ensure that the colloidal mixture can be evenly coated;
[0019] c....
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A glass powder filling and coating method, which is applied to an assembled thermocouple sensor, includes a casing, a porcelain tube connected in the casing, and a pair of wires arranged in the porcelain tube. The coating method includes the following steps: a mixing step, mixing the glass The powder is mixed with epoxy resin to form a colloidal mixture; the coating step is to uniformly coat the colloidal mixture on the surface of the porcelain tube; the drying step is to dry at room temperature or heat; the grinding step is to grind the shaft surface of the cured layer ; Assembling step, inserting the polished porcelain tube of the solidified layer into the shell; Sintering step, performing high-frequency sintering on the solidified layer, so that the glass powder is evenly attached between the shell and the porcelain tube after sintering. With the glass powder filling and coating method of the present invention, glass powder is coated between the porcelain tube and the shell, and glass powder can also be coated in small gaps or areas with complex structures between the porcelain tube and the shell. After sintering, it adheres evenly on the surface of the porcelain tube and the inside of the shell, and the porcelain tube, the coupler wire and the shell are effectively fixed.
Description
technical field [0001] The invention relates to a glass powder filling coating method, in particular to a glass powder filling coating method applied to an assembled thermocouple sensor. Background technique [0002] The couple wire passes through the porcelain tube, and the porcelain tube and the shell are fixed by sintered glass powder, which is a common structure of the assembled thermocouple sensor. The shell and the porcelain tube are filled with glass powder and fixed by high-frequency sintering, and the space between the coupler and the porcelain tube is also fixed by glass powder after sintering. At present, there are two main methods of glass powder filling: one is to use dry powder to pressurize, fill a certain amount of glass powder dry powder at the end, and let the glass powder go down along the gap between the porcelain tube and the shell through pressure; the other One is to mix glass powder and water to form a solution, and then pour it through the end, so t...
Claims
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IPC IPC(8): G01K7/02
Inventor 涂孝军张明任侃彭溢润
Owner SUZHOU CHANGFENG AVIATION ELECTRONICS