Handmade Sink's welded stretching process

In the Handmade Single Sinks market, there are three types of welding processes: integral stamping (also called integral stretching or joint stretching), roll welding (also called bottom welding), and butt welding, both of which are part of the welding basin. Let's take a closer look at the Handmade Sink welding and stretching process. Here are some answers.

Here is the content list:

l  Roll welding process

l  Integral drawing process

l  The Butt Weld Process

Roll welding process

This process involves stretching two single grooves, pressing a panel, welding the two grooves to the panel, and then grinding. The process has low requirements for slot stretching equipment, generally within 500 tonnes of hydraulic equipment can be produced. However, the welding and grinding process requirements are relatively high, the general national brands usually use manual rolling welding, and manual grinding, and the combination of the slot and the panel is rough, often false welding. Imported brands use CNC welding and CNC grinding to eliminate dummy welds, and the polished joints are very flat and beautiful. The advantages of the roll-welding process are: firstly, Handmade Apron Sinks panels can be shaped in a variety of ways, with less investment in factory production molds and shared molds for the slots. Secondly, Handmade Sink panels can be made from brushed or embossed materials, which is aesthetically pleasing. Thirdly, Handmade Sink panels can be made with small R-angles, close to square, allowing more space for use.

Integral drawing process

The monolithic stretching process (also known as one-piece stretching) is the direct stretching of a single piece of material to form two channels through a combination of molds. The process is relatively simple, but the requirements for equipment and molds are high, with stretching equipment of 600 tons or more, even up to 1000 tons. Whether single or double groove, the stretching process is generally divided into two stretches, but the overall stretching requires a high-temperature solution treatment in between the two stretches. Solid solution treatment (also called annealing treatment) is an important process in stainless steel processing, it is a process of heating austenitic stainless steel (commonly known as 304 or 316) to 1050 degrees - 1100 degrees, and then rapidly cooling. Stainless steel materials in processing or high-temperature welding will cause the austenite molecular structure changes, stress increases (too rigid), and corrosion resistance is reduced. The solid solution treatment can solve this problem well, so that the material is restored to its original properties, restoring its ductility and corrosion resistance. Stainless steel has to undergo this process after cold rolling processing from the steel mill. The advantages of the integral drawing process are, firstly, material savings and cost savings. Secondly, the shaped Handmade Sink can be produced aesthetically from the design shape. Thirdly, there is no welding and the use of solid solution treatment enhances all the properties of stainless steel.

The Butt Weld Process

The butt-welding process involves stretching two single channels, cutting two sides flat each, and then welding them together before forming the panel as a whole. The drawing equipment required is the same as for roll welded Handmade Sink, and the welding equipment used is argon arc welding. This process is also very demanding in terms of welding and polishing. Domestic manufacturers use poor equipment and thin material thickness, which does not allow the weld seam to be handled well, so you can often see weld marks on the center beam between the two slots. A good brand is Crown Canada, where it is difficult to see the weld seam on the surface with a mirror. It is mainly used in China for the low and mid-range markets and is inexpensive. The advantage is the low price and the simplicity of the process.

The three processes complement each other, and the two mainstream processes have their distinctive features. In fact, in the Handmade Multi-bowl Sinks design, some are suitable for the production of the roll-welding process, and some are suitable for the production of the overall stretching process. For more Handmade Sink-related questions, please feel free to consult us. With years of accumulated experience in R&D and production, we can provide you with more product services and technical support! Our official website is https://www.liangshunkitchensink.com/.