Vacuum cup and processing method thereof

Abstract

The invention belongs to the technical field of heat preservation, and particularly relates to a vacuum cup and a processing method thereof. The technical problem that an existing titanium vacuum cupis not easy to machine and manufacture is solved. The vacuum cup comprises a titanium layer, a middle stainless steel layer and an outer stainless steel layer which are sequentially arranged from inside to outside, the vacuum cup is characterized in that the upper end of the titanium layer is welded with the upper end of the middle stainless steel layer; a closed space is formed between the titanium layer and the middle stainless steel layer; the upper end of the middle stainless steel layer and the upper end of the outer stainless steel layer are connected in a welded mode, a vacuum cavity isformed between the middle stainless steel layer and the outer stainless steel layer through vacuumizing, and a pressure pipe penetrating through the vacuum cavity and enabling the closed space to becommunicated with the outside is connected between the bottom of the middle stainless steel layer and the bottom of the outer stainless steel layer. The processing method has the advantage that the production and processing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of heat preservation, and in particular relates to a heat preservation cup and a processing method thereof. Background technique [0002] Thermos cups made of titanium liner materials are widely used. [0003] The structure of the thermos cup with titanium liner is: titanium liner, middle stainless steel and outer stainless steel, vacuum is drawn between the titanium liner and the middle stainless steel, and vacuum is drawn between the middle stainless steel and the outer stainless steel, using vacuum to achieve ideal heat preservation Effect. [0004] For example, a Chinese patent discloses a three-layer vacuum titanium cup and its preparation process, application number 201910608824.X, which includes a titanium liner, a stainless steel middle layer, and a stainless steel outer layer at intervals from the inside to the outside. The top of the stainless steel middle layer and the stainless steel outer laye...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned thermos cup has the above advantages, there are certain defects. The vacuum of the thermos cup generally needs to be in a high-temperature environment, which is about 400°C. The melting point of titanium and steel is different, so it is difficult to be effective. Welding, and it is difficult to achieve seamless welding, the vacuum degree is affected, resulting in gas trapped between titanium and steel, at high temperature, the gas expands and causes the extrusion deformation of the titanium liner

[0006] Secondly, the use of stainless steel titanium rings for sealing welding is costly and poor in drop resistance, and is prone to non-vacuum phenomena. At the same time, this process is very difficult to process, because the stainless steel titanium rings need to be welded after vacuuming. Affect the degree of vacuum, and it is not easy to be popularized and applied

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