Welding and Stretch of Stainless Steel Sink

Update:20 Mar 2018

Looking at the Stainless Steel Sink market, there are three types of overall stamping (also called integral stretching or conjoined body stretching), seam welding (also called bottom welding) and butt welding. Both seam welding and butt welding belong to the welding basin.

More common in the market is the production of the seam welding process. This process is mainly stretching two single-slot bodies, and then pressing a panel, welding the two bodies to the panel, and then grinding. The requirements for the tank stretching equipment in the process are low, and hydraulic equipment, typically within 500 tons, can be produced. However, the welding and grinding process requirements are relatively high, and CNC welding and numerical control grinding are usually used to eliminate the need for welding, and the polished joints are very smooth and beautiful.

The advantages of the seam welding process are as follows: 1. The Stainless Steel Sink Colander panel shape can be diversified, and the factory can produce the die with low input costs (the slot die can be shared); 2. The stainless steel sink panel can be a drawing raw material or an embossed material, which is elegant and generous. 3, can make a small angle R tank, close to the square, with more space to use.

The disadvantages of the seam welding are: 1. The welding process damages the stainless steel and easily breaks the austenite molecular structure of the stainless steel and reduces the corrosion resistance. 2, welding and grinding process requirements are high, ordinary equipment is difficult to be competent. 3, material waste, high cost.

The integral drawing process (sometimes referred to as integral drawing) is a process in which two tanks are directly stretched on a piece of material by means of a combination die. The process steps are relatively simple, but the requirements for equipment and molds are high. Stretching equipment needs to be over 600 tons or even 1,000 tons. Whether it is a single groove or a double groove, the stretching during processing is generally divided into two stretchings, but the integral stretching requires a high temperature solution treatment in the middle of the two stretchings. Solution treatment (also called annealing treatment) is an important process for stainless steel processing. It is a process that heats austenitic stainless steel (commonly known as 304 or 316) to 1050 degrees to 1100 degrees and then rapidly cools it.