Also known as seam welding seam welding, is to use a pair of cylindrical electrode roller spot welding electrodes instead of Chivas welding - spot welding business cooperation, welded roll pan movement between the workpiece to produce a mutually overlapped one nugget seal seam welded workpiece method. Generally pulse current or AC current amplitude, can also be three (single) phase rectifier, frequency, high frequency DC current. Seam welding is widely used in oil drums, cans cans, radiators, aircraft and automobile fuel tanks, rockets, missiles in sealed container sheet metal welding, general welding veneer thickness less than 3mm. By a weld seam welding joints, and in terms of different overlapping core melted, rolled into airtight seam welding or spot welding. Each solder joint formation consisting of spot welding process consulting, procurement looking Huashi welding, spot welding, like the presence of pressure and heat melting and cooling crystallization in three stages, but there is a greater difference with spot welding. Because inevitably shunt phenomenon, so the current field and the distribution of the thermal field of welding zone has its own characteristics; and transmit pressure, ohmic heating roll pan constantly rotate transform welding position, so that the current field, thermal field distribution and crystalline melting zone Features are concerned with the speed of changing positions. Application Number / Patent Number: 201320373340.X utility model name: spout automatic profiling welding Product Description: The utility model discloses a spout automatic profiling welder, including welding machines and control cabinets, welding machine and control cabinet electrically connected, and the welding machine comprises a rack fixed to the frame of the CNC automatic moving means, welding means, positioning means, and the control switch. The utility model contoured spout welder, the workpiece positioning mechanism utilizing fixed rack Chivas welding patent spot welding, soldering and welding track control agencies by CNC automatic movement mechanism, enabling profiling welding. As long as the control cabinet pre-programmed trajectory welding, technicians simply fixed on the workpiece positioning mechanism, the boot device, it can be done automatically spout welding, spot welding without manual adjustment. Chivas focused spot welding production welding, spot welding, welding equipment provided by Chivas Chivas Huizhou City Welding Equipment Co., Ltd .. Huizhou City Huashi Welding Equipment Co., Ltd. (www.hwashi.com) strong, credible, in Huizhou, Guangdong distribution equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chivas welding equipment and you hand into the brilliant, for a better future!