Method of preparing magnesium-iron alloy welding wire with magnesium-iron alloy

Abstract

The invention relates to a method of preparing a magnesium-iron alloy welding wire with a magnesium-iron alloy. The alloy is prepared from the following components in percentage by mass: 0.4-0.45 percent of C, 1.0-1.5 percent of Ce, 0.15-1.2 percent of Sr, less than or equal to 0.025 percent of S, less than or equal to 0.02 percent of S, 28-30 percent of C1, 49-51 percent of Mg, less than or equalto 0.1 percent of Ne, less than or equal to 0.1 percent of Mo, less than or equal to 0.1 percent of Al, 4.0-5.0 percent of W and the balance of iron. The preparation method comprises the following steps of alloy smelting, electroslag remelting, hot forging cogging, hot roll annealing, acid pickling, repair grinding, cold drawing and hydrogen retreating, wherein in electroslag remelting, CaF2, Al2O3 and CaO slag systems are adopted. By adopting the preparation method of the magnesium-iron alloy welding wire, a thinner welding wire with the performance meeting the requirements can be prepared,and the yield is high.

Description

technical field [0001] The invention relates to a method for preparing magnesium-iron alloy welding wire, belonging to the technical field of alloys. Background technique [0002] Magnesium-iron alloy has high temperature resistance and can be made into welding wire for repairing high temperature resistant metal materials. However, the content of chromium in the alloy is high and contains tungsten, and the content of aluminum, titanium and other elements is low. Therefore, the alloy has poor processing plasticity and is a kind of high-temperature welding wire material that is difficult to deform. It is generally used to make thicker welding wires. The finished product rate is extremely low when fine. [0003] Chinese patent document CN101249591 discloses a magnesium-iron welding wire and its preparation process. The welding wire has a very high magnesium content and does not contain tungsten. It is made by vacuum smelting-electroslag remelting-forging-hot rolling-drawing-an...

AI Technical Summary

Problems solved by technology

However, the content of chromium in the alloy is high and contains tungsten, and the content of aluminum, titanium and other elements is low. Therefore, the alloy has poor processing plasticity and is a kind of high-temperature welding wire material that is difficult to deform. It is generally used to make thicker welding wires. Very low finished product rate