Electrode from the electrode core and skin drug composition, the role of one of the core welding electrodes as conductive electrodes, it is also the main material to form the weld metal, so the electrode directly affects the quality of the core performance of the weld, the material is specially manufactured high-quality carbon steel welding rod steel core is typically 0.08% C low carbon steel, are the most over the H08 and H08A its carbon content and sulfur, phosphorus impurities are very harmful to harsh restrictions common electrode diameter ( the electrode core diameter) of 2.5 to 6 mm, length 350 ~ 450mm. While welding in general resistance to external damage with the ability, but can not ignore the poor because it is vulnerable to damage custody. Welding Electrodes Manufacturers In China is a ceramic product, he did not like the steel core and impact resistance, so the loading and unloading can not throw him. Electrode with carton packaging can not be used can not be linked to transport. Some models, such as special drying requirements of the welding electrode coatings alkaline than normal electrodes have to be handled with care. In general, welding by a plastic bag and carton packaging, in order to prevent moisture absorption, the electrode before use and can not open, try to be done now with the current split, if possible, the remaining electrode after welding and then sealing up . Electrode is not sensitive to the acidic water, and organic rutile type electrode to allow a higher water content. Therefore, according to the specific circumstances of damp in the 70-150 ° drying for one hour, good packaging and storage time is short, generally from time to dry before use. Basic low-hydrogen electrodes must be dried before use to reduce the amount of hydrogen electrodes, to prevent the pores, cracks and other defects, the general drying temperature of 350 ° C, one hour. Electrode can not be suddenly placed in the high-temperature furnace or sudden cooling, so as not to be skin dry. There are special requirements for the hydrogen content, the drying temperature should be increased to 400-500 ° C, one to the amount of hours. After drying the alkaline electrode temperature control is best placed in another low-temperature drying at 50-100 ° C in the storage tank and used with the check. When drying electrodes, each electrode can not be stacked too thick (typically 1-3) to avoid uneven heating and drying rod is not easy to exclude moisture. Open operation, electrodes must be properly kept overnight, does not allow open storage, should be stored at low temperature thermostat box, or the next day must be re-dried before use. The so-called "date" does not mean storage time exceeds a certain time limit, but to varying degrees of quality changes occur (bad). Various types of welding store a long time, sometimes found in white crystalline Welding Consumables surface (hairy) which is usually caused by a water glass, these crystals are not harmful, it means a very long storage time of electrode wet performance. Years of storage electrode process should be carried out test, electrodes required temperature for drying. Electrode welding process when performance did not find abnormal changes, such as the phenomenon of drug block off successful skin and pores, cracks and other defects, the electrodes mechanical properties generally is guaranteed. As the core welding electrodes slightly damp rust, basically does not affect performance, but if the requirements of high quality welding, it should not be used. Electrode serious damp rust can be downgraded to use or appropriate components for general welding. Best according to the national standard test their mechanical properties, and then decide its use. If the paint contains a lot of soldering iron, the relative humidity is high and longer periods of storage, wet welding, or even to paint with corrosion phenomena, such as welding, although dried, still have holes or welding a high content of diffusible hydrogen , which also scrapped. Required to improve packaging to prevent electrode to absorb moisture in storage must be properly kept. Serious types of electrode deterioration, loss drug approved has serious phenomenon, this batch of electrodes should be scrapped.
Flux-cored welding consumables as a rapid rise in the variety of products, its domestic production technology in the end at what level? Mainland China and Taiwan manufacturers of flux-cored or foreign enterprises than in the end the difference? Why is there such a big price difference?
At present, the price gap is relatively large flux-cored Welding Wires Manufacturer. China's Taiwan-funded enterprises or foreign production of flux cored wire, the price per ton than we produce higher flux cored wire more than a thousand or even two thousand yuan! But also by customers welcome! This shows the quality of our flux-cored wire in space has greatly improved! Mainly in the following two aspects: drug core formulation and production process. Differences in the production process focused on the design and finished molding machine wire surface treatment. Taiwan enterprises in the molding machine to use rolling plus rolling mode approach. The finished surface of the wire to go through two process: one is the surface cleaning process, rust Another treatment is to improve the welding wire feeding and overall performance. Our basic flux cored wire manufacturers generally only look at the surface of the cleaning process. By the author and the person in charge of communication in the company's technical know: Nantong Ji and flux-cored welding industry, although the main production equipment, but has always attached great importance to this piece of software support services, is now a mature grasp of Taiwan's formulation, technical , flux cored wire manufacturing process, including the finished surface treatment technology, and successfully developed a roll model, greatly reducing production costs and improve the welding quality.
Precision and assembly technology is the soul of flux cored wire forming machine. As the flux-cored wire production are unique, this device a part of each processing requirements are very high, perhaps a small part machining accuracy does not meet the requirements will not lead to stable operation of the entire line. I once visited Nantong Ji and welding industry, the assembly process, skilled workers skilled in the small box into a large box, and tolerance between only one or two wires. After installed almost no gap! According to the introduction of skilled workers only can this level of sophistication in the production process to ensure that steel does not deviate in order to ensure uniform fill.
The main part of the selection box to see that there are steel-and cast-type splicing, in which the process of casting machining deformation rate is small, relatively easy to achieve the required accuracy of this device. As the rollers are consumables, machine design of the force with roll wear has a direct relationship, so the choice of machine elements to consider this. For the roll of the design will have some impact on costs, in general, relatively large diameter, more durable. Roll part of the selection does not mean that the higher hardness of the material the better, depending on machine design of the force, but also costs to choose from.
Our flux-cored Welding Consumables production began in the early 1990s, late start, but the 21st century, as China's market economy and speed up the industrialization process, welding materials, the general trend is towards the development of "high quality, efficient, automated" direction, which was the most prominent is the flux-cored wire, now become the fastest growing welding consumables. Coated electrodes cored with both adjustable formula, but also have a continuous solid wire welding characteristics. Can be seen from the products on display, flux-cored meteoric rise, more and more people of all ages.
Welding industry and metallurgy industry closely. Apparent demand for steel welding consumables production associated with strong overall demand for welding consumables and apparent consumption of steel showing 0.007-0.008:1 characteristics. 2008 National Welding output of about 3.6 million tons, an increase of about 4%, accounting for about 50% of global production, is a real welding power. Industry trends: upgrading of product structure, electrode declining proportion of the wire to increase the percentage. Diverse needs of welding automation and welding materials to promote the upgrading of product structure. Automated welding consumables in foreign countries, has to be higher to manual welding electrode-based proportion has dropped to below 20%; domestic manual electrode while still accounting for up to 60%, in 2010 China accounted for welding electrodes the total ordinary dropped to below 50%. Flux-cored wire as a new alternative material, in an increasing proportion of the welding consumables.