Tin ring fusion welding process for socket

A socket and tin ring technology, applied in the direction of manufacturing tools, metal processing, welding equipment, etc., can solve the problem of poor leakage prevention performance of sockets, and achieve the effect of reducing production cost and good leakage prevention performance.

Inactive Publication Date: 2014-04-30
中普天诚(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fusion welding method cannot take into account the above requirements and effects at the same time, so the welded socket cannot withstand a long-term experiment with a pressure difference exceeding 25 atmospheres, and the leak-proof performance of the socket is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] Put pins made of kovar alloy and kovar plates at 650°C for 5 minutes for oxidation treatment to obtain mouse gray kovar parts, and immediately sinter with glass insulators at 950°C for 25 minutes; Then gold-plate the sintered parts; put the treated sintered parts into the nickel-plated socket shell, put the socket into a box-type resistance furnace at 500 ° C, and keep it warm for 5 minutes; take out the socket; put the pre-wound tin ring Put the sintered part into the mating position of the nickel-plated socket shell, the tin ring will flow into the periphery of the joint surface of the sintered part and "wet" with the plating layer of the socket shell to seal the joint surface of the sintered part and the socket shell, and cool Finally, it plays the role of welding the sintered part and the socket shell.

Embodiment approach 2

[0017] The pins made of Kovar alloy and the Kovar plate are oxidized at 660°C for 5 minutes to obtain mouse gray Kovar parts, and then sintered with glass insulators at 970°C for 25 minutes; Then gold-plate the sintered parts; put the treated sintered parts into the nickel-plated socket shell, put the socket into a box-type resistance furnace at 500 ° C, and keep it warm for 5 minutes; take out the socket; put the pre-wound tin ring Put the sintered part into the mating position of the nickel-plated socket shell, the tin ring will flow into the periphery of the joint surface of the sintered part and "wet" with the plating layer of the socket shell to seal the joint surface of the sintered part and the socket shell, and cool Finally, it plays the role of welding the sintered part and the socket shell. Embodiment 3 The contact pin made of Kovar alloy and the Kovar plate are kept at 670°C for 5 minutes for oxidation treatment to obtain mouse gray Kovar parts, and then immediately...

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Abstract

The invention discloses a tin ring fusion welding process for a socket. A tin ring is self-fluxed into liquid, and the liquid flows into the periphery of the joint surface of a sintered piece and infiltrates a clad layer of a socket shell in order to seal the joint surface of the sintered piece and the socket shell. In an implementation process, any soldering flux is not needed, thereby preventing the surfaces of parts of the socket from being polluted and greatly reducing the production cost of the socket. The socket can withstand long-term experiments under the condition that the air pressure difference surpasses 25bar, and is high in leak resistance.

Description

technical field [0001] The invention discloses a fusion welding process, in particular to a tin ring fusion welding process of a socket. Background technique [0002] The socket can be divided into two parts, the outer shell is made of brass material, and the inner core is a sintered part (sintered by Kovar alloy plate, needle and glass), and then the inner core and the outer shell are welded together. The existing welding methods are divided into the following three categories: (1) fusion welding; (2) pressure welding; (3) brazing. Among them, the fusion welding method is widely used in the connection between the inner core and the outer shell of the socket. The so-called fusion welding refers to the method of heating the joint of the weldment to a molten state during the welding process and completing the welding without applying pressure. When welding, it is necessary to ensure the leak-proof performance of the socket and the requirements for resistance to air pressure d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/20B23K101/36
CPCB23K1/08B23K1/20B23K2101/36
Inventor 宋俊伟
Owner 中普天诚(天津)科技有限公司
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