Electrode arc welding safety and maintenance technology
27 Jul 2020
1. Safety and protection technology We must pay attention to safety and protection during the operation of electrode arc welding. Safety and protection techniques mainly include avoiding electric shock, arc radiation, fire, explosion, and poisoning by toxic gases and smoke. 2. Avoid electric shock In the case of electrode arc welding, there is a risk of electric shock due to the grid voltage, the output voltage of the welding machine and the voltage of the portable lamp. Therefore, take measures to avoid electric shock. Or connect to zero. Welding cables and welding tongs must be well insulated, and if damaged, repair them in time. When welding with electrodes, wear insulated shoes and welding gloves. When welding in boilers, pressure vessels, pipes, and narrow and moist trenches, insulation pads must be provided and someone should be monitored outside. When using portable lighting, the voltage does not exceed the safe voltage of 36V, and does not exceed 12V when working at heights. Wh...
Principle of platform spot welder
20 Jul 2020
The articulated non-marking platform spot welding machine is a new concept spot welding machine, which has many advantages that the traditional spot welding machine can't match. The platform spot welding machine can make equipment management convenient, product quality improved, work efficiency improved, labor intensity reduced, and production environment improved. When welding parts such as iron cabinets and work tables, there are no welding pits on the outer surface of the parts, which improves the product quality. For spot welding of deep parts of the cabinet, it is difficult for traditional spot welders to reach the weld. Follow this site to understand the latest market situation of domestic Linyi spot welding machines. The platform spot welder is very easy. The use of pneumatic pressure can reduce the labor intensity of the laborer, obtain a constant spot welding pressure, and make the welding spot uniform. The flexibility and convenience of operation make the product design easie...
Basic requirements for flash butt welding of steel bars
14 Jul 2020
Continuous flash welding 1. It is closely related to the capacity of the welding machine, the steel grade and the size of the steel bar. The welding machine of a certain capacity can only weld the steel bars that meet the specifications. 2. According to the steel grade, diameter, welding machine capacity and different process methods, choose the appropriate transformer level. If the transformer level is too low, the secondary voltage is low, and the welding current is small, it will make flashing difficult, insufficient heating, and cannot use flash to protect the weld from oxidation; on the contrary, if the transformer level is too high, the flash is too strong, It will also cause a lot of heat to be taken away by the metal particles, and the temperature of the end of the steel bar will not rise. 3. The fluctuation of the power supply voltage has a great influence on the welding quality. During the construction on site, due to the large number of electrical equipment, the voltage drop...
Points to note when working with a spot welder
06 Jul 2020
Pay attention to the following when using the spot welding machine: 1. Whether the air pressure is above 1kgf/cm2; 2. Bad pressure reducing valve; 3. Leakage of O-ring, replace O-ring; 4. Oil is lacking in the pressure head, please fill in oil. To avoid welding spatter, noise, etc. endangering you and others, please use protective equipment. Splashes can burn eyes, noise can hinder hearing 1. Please wear protective glasses. 2. Please use protective gloves, long subsidies clothes apron and other protective equipment. 3. Set up a protective barrier around the welding place to prevent splashing from endangering others. 4. When the noise is high, please use sound insulation equipment. When welding, never put your hands or the like between the electrodes. If the pressure of the electrode is large to hundreds of kgf, it will cause serious injury. Zhejiang Cheng hong machinery co., LTD is a professional engaged in PE, HDPE, PPR thermoplastic piping engineering mach...
Advantages of spot welding projection welding compared with spot welding
30 Jun 2020
1 spot welding machine can weld multiple welding points at the same time in one welding cycle, which not only has high productivity, but also has no diversion effect. Therefore, solder joints can be arranged on narrow parts without being limited by the pitch. 2 Because the current is concentrated on the bumps and the current density is large, it can be welded with a small current and can reliably form a small nugget. In spot welding, it is difficult to form a nugget smaller than a certain size corresponding to a certain plate thickness. 3 The position of the bumps is accurate, the size is consistent, and the strength of each point is relatively uniform, so for a given strength, the size of the bump welding spot can be smaller than the spot welding. 4 Because the large flat electrode is used, and the bumps are designed on one workpiece, it can minimize the indentation on the exposed surface of another workpiece. At the same time, the current density of the large plane electrode is small...
Automatic cutting butt welding machine needs matching options
22 Jun 2020
In the process, the automatic shear butt welding machine is used, and different products need to be configured according to different products. 1, Welding of workpieces with a length of more than 2000 mm, due to equipment errors or the workpiece itself, it is easy to cause welding molding, or a bad weld offset, or an oscillating system, so a tracking system needs to be configured to overcome the bending or undercut of the weld Defects such as under-penetration can truly realize automatic welding and achieve the effect of providing efficiency and welding quality. The right swing device forms a complete set of automatic shear butt welding machine. 2, Welding more than 2mm thick steel cylinder, due to the large gap between the welds, the base metal melting workpiece itself cannot be fully welded, welding defects, and then need to add an automatic wire filling body to increase the molten metal to fill the weld during the welding process To achieve high-quality welds. Heat source selection ...