A processing method for bonding between titanium or titanium alloy watch parts with high finish

Abstract

The invention relates to a treatment method for jointing titanium or titanium alloy watch parts. The treatment method comprises the following procedures of: (1) placing an alloy filler with melting point range of 750-900 DEG C in a filler accommodating space and fixing the watch housing and the guide sleeve with each other by a tooling fixture to form an integrated workpiece to be machined; (2) placing the workpiece into a vacuum furnace, wherein the vacuum pressure of the vacuum furnace is kept to be lower than 1.5*10<-2>Pa in the operation process until the manufacture procedure is finished, wherein shielding gases and any oxidizing gas are not introduced into the vacuum furnace during operation; (3) heating the workpiece in the vacuum furnace; and after the temperature in the vacuum furnace reaches the temperature range of 450-550 DEG C, preserving the heat within the temperature range for no less than 30 minutes; (4) continuing to heat the workpiece; and after the temperature in the vacuum furnace reaches 650-750 DEG C, preserving the heat within a temperature range for no less than 30 minutes; (5) continuing to heat the workpiece to the temperature of 770-900 DEG C and preserving the heat within the temperature range for 5-30 minutes; and (6) naturally cooling the vacuum furnace to the room temperature. According to the invention, the jointing quality and surface hardness of the titanium or titanium alloy watch parts can be effectively improved.

Description

a technical field [0001] The invention relates to a processing method for jointing of high-gloss titanium or titanium alloy watch parts; in particular, a processing method for jointing a watch shell and a guide sleeve. Two background technology [0002] The current joining methods of titanium or titanium alloy parts are as follows: [0003] 1. Brazing method: In a vacuum or protective gas (argon) environment, put fillers in the parts to be joined between the two parts, pressurize both ends, then heat up to the melting temperature of the fillers, and hold the temperature for a short time so that the fillers and the base material are fully bonded. Cool after wetting to solidify the filler and achieve the purpose of joining parts. The brazing method does not have high requirements for fillers. It should be noted that the wettability between the filler and the substrate must be good. At the same time, the filler is not easy to evaporate in a vacuum, and sometimes a protective g...

AI Technical Summary

Problems solved by technology

The laser welding method is a point-like joint that melts the base material. There will be obvious molten tissue at the joint, resulting in an uneven joint surface. In addition, it cannot be welded in areas that cannot be reached by laser light.

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