Inspection standards and methods for stainless steel thermos cups (bottles, pots)

The main body of the thermos cup (bottle, pot) is left exposed for more than 30 minutes at the specified test environment temperature and filled with water above 96°C. The actual measured temperature of the water in the main body of the thermos cup (bottle, pot) reaches (95±1)°C. , close the original cover (stopper), and after 6h±5min, measure the temperature of the water in the main body of the thermos cup (bottle, pot). It is required that thermos cups (bottles and pots) with inner plugs should not be lower than level II; thermos cups (bottles and pots) without inner plugs should not be lower than level V.

5.Stability

Under normal use, fill the thermos cup (bottle, pot) with water, place it on a non-slip straight wooden board tilted at 15°, and observe whether it topples over.

6.Impact resistance

Fill the thermos cup (bottle, pot) with room temperature water, hang it vertically at a height of 400mm with a lanyard, and drop it to a horizontally fixed hard board with a thickness of more than 30mm in a static state to check for cracks and damage. At the same time, check whether the thermal insulation performance meets the corresponding regulations.

7.Sealing

Put 50% of the volume of hot water above 90℃ into the main body of the thermos cup (bottle, pot), seal it with the original cap (stopper), with the mouth upward, swing up and down 10 times at a frequency of 1 time/second and an amplitude of 500mm. , check for leaks.

8.Sealing parts and hot water odor

After cleaning the thermos cup (bottle, pot) with warm water between 40℃ and 60℃, fill it with hot water above 90℃, close the original lid (stopper), and leave it for 30 minutes. Check whether the sealing parts and the hot water have any peculiar smell.

9.Hot water resistance of rubber parts

Place the rubber parts in the container of the reflux condensation device, boil slightly for 4 hours, then take them out and check whether they are sticky. After leaving it for 2 hours, check with the naked eye whether there is any obvious deformation in appearance.

10.Installation strength of handle and lifting ring

Hang the thermos cup (bottle, pot) through the handle or lifting ring, and put a weight equal to 6 times the weight of the thermos cup (bottle, pot) filled with water (including all accessories), and hang it lightly on the thermos cup (including all accessories). keep it on for 5 minutes, and check whether there is a handle or lifting ring.

11.Strength of straps and slings

Strap strength test: unfold the strap to its longest point, then hang the thermos cup (bottle, pot) through the strap, and use a weight equivalent to 10 times the weight of the thermos cup (bottle, pot) filled with water (including all accessories), such as If not shown, hang it lightly on the thermos cup (bottle, pot) and keep it for 5 minutes. Check whether the straps, slings and their connections are slipping or broken.

Sling strength test: hang the thermos cup (bottle, pot) through the sling, use a weight equivalent to 10 times the weight of the thermos cup (bottle, pot) filled with water (including all accessories), and hang it lightly on the thermos cup  in the figure (bottle, pot), keep it for 5 minutes, and check the sling and its connections.

12.Coating adhesion

Use a single-edged cutting tool with a blade angle of 20° to 30° and a blade thickness of (0.43±0.03) mm (as shown below), apply vertical and even force on the surface of the coating to be tested, and scratch 100 (10× 10) 1mm2 checkerboard grid, and stick a pressure-sensitive adhesive tape with a width of 25mm and an adhesion force of (10±1) N/25mm on it, and then peel off the tape forcefully in a direction at right angles to the surface, and calculate the amount of tape that has not been peeled off The number of remaining checkerboard grids, it is generally required that the coating should retain more than 92 checkerboard grids