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A titanium vacuum metal thermos cup and a manufacturing method thereof

A technology of vacuum heat preservation and production method, which is applied in the direction of drinking water vessels, etc., can solve the problems of poor surface quality and low vacuum sealing yield of titanium metal thermos cups, and achieve the effect of stable quality and simple operation

Inactive Publication Date: 2019-01-11
JIANGSU XINUO INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of poor surface quality and low vacuum sealing yield in the prior art, the present invention proposes a titanium metal vacuum insulation cup and its manufacturing method

Method used

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  • A titanium vacuum metal thermos cup and a manufacturing method thereof
  • A titanium vacuum metal thermos cup and a manufacturing method thereof
  • A titanium vacuum metal thermos cup and a manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The making of embodiment 1 titanium metal vacuum insulation cup

[0042] (1) Production of double-layer titanium metal semi-finished cup body: select titanium metal pipes with different diameters according to the design requirements, cut and blank, and use water expansion to obtain the outer shell 2 and bottomless liner cylinder 12 respectively; The inner tank bottom 11 that matches the whole body of the inner tank is obtained; the inner tank bottom 11 is butt-welded with the inner tank cylinder body 12 by laser welding and argon protection on both sides; according to the design requirements, the shell 2 and liner 1 are tightly matched at the mouth and connected by argon arc welding.

[0043] (2) Closure production: According to the design requirements, the titanium metal strip is blanked and stamped to make a back cover 3 matching the bottom of the shell 2, and punched at the center of the back cover to make a vacuum-tight through hole 31.

[0044] (3) Surface purific...

Embodiment 2

[0048] The making of embodiment 2 titanium metal vacuum insulation cup

[0049] (1) Same as embodiment one step (1).

[0050] (2) Same as embodiment one step (2).

[0051] (3) Surface purification pretreatment: Put the back cover 3 into a vacuum furnace and vacuumize to 9×10 -3 Pa, heat up to 750°C in 120 minutes, pass in argon, maintain the pressure in the furnace at 10-50Pa, keep warm for 30min, then raise the temperature to 930°C, keep warm for 6h, and cool to 80°C with the furnace.

[0052] (4) Welding back cover: pressing and tightly fitting the shell 2 and the back cover 3, and adopting argon arc welding to weld the connection to make a double-layer titanium metal cup body;

[0053] (5) Brazing and sealing: use Ag-28Cu silver-based solder to cover the brazing hole 31, put it in a vacuum furnace, raise the temperature to 750°C within 120min and keep it warm for 30min, then raise the temperature to 880°C for 60min and braze and seal for 10min; Cool the furnace to 730°C,...

Embodiment 3

[0055] The making of embodiment 3 titanium metal vacuum insulation cup

[0056] (1) Same as embodiment one step (1).

[0057] (2) Same as embodiment one step (2).

[0058] (3) Surface purification pretreatment: Put the back cover 3 into a vacuum furnace and vacuumize to 9×10 -3 Pa, heat up to 700°C in 100 minutes, pass in argon, maintain the pressure in the furnace at 50-80Pa, keep warm for 30 minutes, then raise the temperature to 1100°C, keep warm for 1 hour, and cool to 60°C with the furnace.

[0059] (4) Welding back cover: pressing and tightly fitting the shell 2 and the back cover 3, and adopting argon arc welding to weld the connection to make a double-layer titanium metal cup body;

[0060] (5) Brazing seal: Use HSGB-1 glass solder (softening point 325°C), cover the brazing hole 31, put it in a vacuum furnace, heat up to 300°C within 60 minutes, keep it warm for 30 minutes, and then heat up to 500°C for 60 minutes to braze Weld and seal for 30 minutes; cool to 300°C...

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Abstract

The invention discloses a titanium metal thermos cup and a manufacturing method thereof. The manufacturing method comprises the following steps: before vacuum brazing and sealing, adopting a vacuum high-temperature hot working mode to clean the whole titanium cup body of the back cover or double titanium metal; after cooling, performing vacuum brazing sealing again. The main production steps include: semi-finished cup body and back cover production, complete cup body or bottom seal cleaning treatment, brazing sealing, and surface treatment. The manufacturing method of the invention solves theproblem of low qualified rate of brazing seal, complex brazing structure, high technical difficulty of manufacturing process, poor reliability and the like of the prior technical scheme, and obtains the same or better sealing performance, reliability and heat preservation effect as stainless steel thermal cup, and the brazing sealing structure is simple.

Description

technical field [0001] The invention relates to the technical field of vacuum insulation cups, in particular to a titanium metal vacuum insulation cup and a manufacturing method thereof. Background technique [0002] Traditional thermos cups are generally made of stainless steel and are mainly used to hold hot water or ice water. Since the inner layer of the thermos cup is made of stainless steel, it inevitably contains heavy metal elements such as nickel, chromium, manganese, cadmium, lead, etc. When storing drinks with a certain pH for a long time, there is a risk of heavy metal precipitation; not only will the drinks lose their original taste, deteriorating and harmful to human health. At the same time, beverages will corrode stainless steel or cause leakage, which will affect the service life. Therefore, ordinary stainless steel thermos cups are not suitable for storing acidic substances such as milk, carbonated drinks, fruit juices, etc. for a long time, nor are they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47G19/22B23P15/00
CPCA47G19/2288B23P15/00
Inventor 张碧峰
Owner JIANGSU XINUO INDAL
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