How does flame spraying improve product quality?

       Recently, our factory has completed the optimization and upgrade of the flame spraying equipment of the rolling mill, which has effectively improved the product quality and reduced the equipment failure rate.

 

Flame spraying is a key link in the company's casting and rolling process, and the quality of spraying directly limits the quality of the product. Since the hot rolling mill was put into operation, the flame spray chain has often suffered from unstable operation and frequent paper jams. The high failure rate not only leads to severe sticking to the product surface and increased waste, but also makes it impossible to effectively control the amount of liquefied gas used. Energy waste

In response to this problem, the casting and rolling plant actively organized management and technical personnel to conduct repeated research and demonstration. Finally, by installing guide rails on the rack, the working method is changed, and the single chain is changed to chain plus linear guide rail, which makes the mechanism run more smoothly. It improves the safety, stability and economy of spraying equipment, improves product quality, realizes zero waste, and greatly reduces the failure of frequent chain breakage, prolongs the maintenance period of the equipment, and saves maintenance costs. At the same time, the additional photoelectric limiters on both sides can precisely control the flame spraying stroke according to the board width, reduce energy waste, and reduce the consumption of liquefied petroleum gas and compressed air by more than 10%.

Liquefied gas is an essential energy source in the flame spraying process and is an inert gas. As the current temperature drops, the vaporization of the liquefied gas gradually weakens, resulting in reduced production efficiency and energy waste. In response to this situation, the technicians of the foundry and rolling mills continuously conducted demonstration tests and changed the flame spraying of the 40# and 42# mills from liquefied gas to natural gas. After the conversion, the surface quality of the finished blank is good, the oxidized material is 258 tons, and the qualified curtain wall material is 421 tons.