1. Energy-saving transformation of surface treatment
Spring steel wire in the production of surface treatment, mainly is to remove or semi-finished steel wires surface scale, and increase the coating, to facilitate the process after the drawing lubricant into, common surface treatment for large pool of pickling, phosphating process, such as the process because of the wire rod coil processing, big pond exposure, pickling and phosphating process need to be heated, lead to surface treatment of energy-saving, neither is not environmental protection, and product quality control also much inconvenience, its transformation space is huge, there are the following several kinds of surface treatment can be reference for application:
(1) mechanical shucking + online continuous chemical pickling or ultrasonic cleaning + boron coating online processing, the technology is mature, in steel cord, cutting steel wire, tire ring steel wire and high pressure hose steel wire products mature application, with high production efficiency, stable product quality, less acid, relative energy saving and consumption reduction;
(2) shot peening treatment + electrolytic phosphating, also occasionally applied, on the surface of the spring steel wire with high requirements, is also a better production process, high-speed iron shot to improve the surface quality of wire, improve the life of the spring is beneficial;
(3) mechanical shucking + sand belt processing + online coating, but the cost of sand belt is relatively high, but it is more environmentally friendly;
(4) tunnel closed pickling system, this system is also a full roll surface treatment, but the level of automation is high, the rod in the closed tunnel kiln in the pool step cleaning, acid utilization rate is high, but the investment is large, an annual output of 100,000 tons of production line, the investment is up to 6 million yuan.
