In submerged arc welding operations, flux is crucial for ensuring welding quality. It not only protects the melt pool from atmospheric pollution, improves the quality of welding joints, but also significantly enhances welding efficiency.
However, after welding is completed, up to 70% -90% of the flux is not melted and consumed, but faces the fate of being discarded due to mixing with welding slag or impurities.
Traditional processing methods not only lead to material waste, but also increase production costs and environmental burdens. Nowadays, with the innovation of flux recycling and drying technology, this situation is undergoing revolutionary changes.
01 Flux Recycling: From Waste to Precious Resources
The traditional method of flux recycling mainly relies on manual screening, which is inefficient and ineffective. Modern flux recycling equipment achieves the recycling and reuse of flux on the production line through automation technology.
These systems are capable of separating dust and impurities from the flux, ensuring that only flux that meets the requirements enters the circulation system. Through imported fan recycling, external compressed air source feeding, material level detection, upper and lower dual valve exchange, high-density membrane filter dust removal, the effective recovery rate of solder flux can reach over 98%.
02 Flux Drying: A Key Step in Eliminating Quality Hazards of Weld Seams
If the recycled flux contains moisture, defects such as pores and cold cracks will occur during the welding process, seriously affecting the welding quality. Therefore, drying treatment is an indispensable step in the recycling and utilization of solder flux.
During the manufacturing, transportation, and storage processes, solder flux may infiltrate moisture, and it must be dried to remove moisture before use. Otherwise, moisture will decompose into hydrogen during welding and remain in the metal around the weld, causing cold cracks in the weld and leading to welding accidents.
Our flux dryer adopts advanced heating technology and precise temperature control system to ensure uniform and thorough drying of the flux. Stainless steel electric heating tubes are used as heating elements, evenly arranged in the furnace, equipped with automatic temperature control, automatic constant temperature and other devices. After drying, the moisture content of the flux can be less than 0.1%.
03 Win win situation of economic and environmental benefits
The return on investment in flux recycling and drying equipment is evident. On the one hand, it significantly reduces the procurement cost of solder flux; On the other hand, it improves the stability of welding quality, reduces rework and quality accidents.
An efficient flux recycling device has achieved the recycling and reuse of flux on the production line, without the need for manual transportation of flux. It only needs to be replenished in a timely manner when the flux decreases, greatly reducing labor costs.
From an environmental perspective, the recycling of solder reduces the generation of solid waste, which is in line with the concepts of green manufacturing and sustainable development. Welding, as a fundamental process in many industries, its environmental improvement is of great significance for the green upgrading of the entire industry chain.