The difference between whether there are welds on the inner liner of stainless steel insulation cups

Whether there are welds on the inner liner of the stainless steel insulation cup mainly depends on the production process used during the processing of the insulation cup. When we purchase insulation cups, we will find two weld lines on the inner wall of the cup. One is straight to the bottom of the cup, the other is round at the bottom, and some insulation cups have no weld lines on the inner wall. What is the difference between the two? Now let's share with you the differences between Chaolang Industry and Trade:
The difference between whether there are welds on the inner liner of stainless steel insulation cups
In the insulation cup industry, there are two production processes: integral stretching and seam welding stretching. If you find weld lines on the inner wall of the insulation cup, it indicates that it uses seam welding. If there are no lines, it uses seamless welding for integral stretching.
The overall stretching process is a process of directly stretching a stainless steel seamless tube material into an insulation cup inner liner through a combination mold. The process is simple, but there are high requirements for equipment and molds. The overall stretching process used for stretching the inner liner of insulation cups can be quite material intensive and costly. Sometimes, if the height of the liner is too high, it cannot be stretched at once and requires two or even three times of stretching to complete. The advantage is that without welding, the weld seam cannot be seen, making it look more beautiful and smooth.
There are welds on the inner liner of the stainless steel insulation cup
There are welds on the inner liner of the stainless steel insulation cup
The welding and stretching process is completed by cutting, bending, and rounding stainless steel plates, and then using a straight seam welding machine for argon arc welding. This will result in straight welds. The other is the argon arc welding between the inner liner of the insulation cup and the bottom of the liner, which requires the use of a horizontal circumferential welding machine. This is the second circular weld, After the process is completed, use the insulation cup inner liner leak detector to detect any welding leakage, and then proceed to the next process of pressing and welding with the outer liner.
Stainless steel insulated cup liner without welds
There are welds on the inner liner of the stainless steel insulation cup
For the second weld, most insulation cup manufacturers produced in Zhejiang use the horizontal circumferential welding process for welding, so two welds can be seen. The bottom of the inner liner has a curved shape, making it easier to see dirt clearly and can be directly cleaned. The manufacturer of insulation cups in Guangdong uses vertical circumferential welding process for welding. The bottom of the inner liner is at a right angle, so only one straight weld seam can be seen by the naked eye. The disadvantage is that the bottom is prone to dirt accumulation and cannot be seen by the naked eye, making it difficult to clean. Therefore, the bottom welding seam stretching process can save materials and costs, and the design can have various shapes. The disadvantage is that the weld seam is not very beautiful when seen,
However, the two processes have little impact on the use and insulation performance of insulation cups. There is not much difference between these two stretching processes in terms of the use and insulation performance of insulation cups. The difference lies in the raw materials, which is reflected in the significant difference in purchase price. The overall stretching insulation cup is more expensive than the welding stretching insulation cup, but this does not affect the use and insulation performance. Senhua is a manufacturer of insulation cup and kettle series, leisure sports water kettle series, and children's water kettle series in China. Our main products include insulation cups, vacuum insulation cups, stainless steel insulation cups, etc. Customized insulation cups are also a major feature of our company. With 20 years of production experience and assurance, we ensure the quality of each product.