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What does the holding time of the vacuum flask depend on?

2020/12/18

Vacuum flask manufacturers: What does the length of the vacuum flask's holding time depend on?

1. The insulation time of the vacuum insulation cup depends on the mouth size and capacity structure of the insulation cup body and the thickness of the material.

1. Large-capacity and small-caliber vacuum insulation cups have a longer time, on the contrary, small-capacity, large-caliber vacuum insulation cups have a shorter time;

2. The thinner the material, the longer the holding time, but the cup body is easy to be damaged and deformed, which affects the service life.

3. Measures such as polished, copper-plated, silver-plated or wrapped with aluminum foil on the outer wall of the inner tank of the vacuum thermos cup to increase the degree of heat preservation. Generally, the polishing cost of the inner tank is about 1 yuan, the cost of copper plating of the inner tank is about 2 yuan, the cost of silver plating of the inner tank is about 5 yuan, and the cost of wrapping aluminum foil is about 50 yuan. The surface treatment of the outer wall of these inner tanks is determined by the length of the insulation time required by the customer.

4. Adding a welding getter at the bottom of the exhaust can absorb the remaining vacuum gas that is not exhausted during the vacuuming process of the vacuum flask.

2. The length and service life of the vacuum insulation cup depend on the cleaning and vacuuming time of the inside of the cup, and the most important structure of the vacuuming system.

At present, the vacuum cup vacuum equipment used by the vacuum cup manufacturer includes a vacuum exhaust station (commonly known as a tail vacuum machine) and a vacuum brazing furnace (commonly known as a tailless vacuum machine). Vacuum brazing furnace can be divided into single furnace and multiple furnaces.

1. The vacuum flask is evacuated by a vacuum machine with a tail. The heating temperature of the vacuum flask is about 500 degrees. The outer container of the vacuum flask is not easy to be deformed, but the welding part of the copper tube is easy to collide. It should be specially protected during the processing of semi-finished products.

2. Single-furnace type overall vacuum brazing furnace: the vacuuming time is relatively long, if the manufacturer wants to improve the production efficiency and shorten the vacuuming time, it will affect the length of the holding time and the service life.

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