Antirust method for cold drawing production of high-strength alloy welding wire

Abstract

The invention discloses an antirust method for cold drawing production of a high-strength alloy welding wire, which comprises the following steps of: a) annealing the welding wire; b) thermally pickling; c) coating; d) performing dry drawing; e) performing cold pickling process and oil immersion operation on a semi-finished welding wire; and f) performing wet drawing on a finished welding wire. The processing method mainly solves the problem of low antirust performance in the cold drawing production process of the high-strength alloy welding wire, a bright welding wire is produced by a novel method for annealing and cooling segmentally, performing cold acid pickling, oiling and performing wet drawing, the original protective atmosphere annealing and vacuum packaging production mode is replaced, and the problem that the high-strength alloy welding wire is easy to rust is solved. The product meets the requirement on technical conditions of the high-strength bright alloy welding wire, and the specification of the product is that the high-strength bright alloy welding wire has the size phi of 1.2 to 2.0mm.

Description

technical field [0001] The invention relates to a manufacturing method of welding wire, in particular to a cold drawing production method for preventing the surface of high-strength alloy welding wire from rusting and improving the processing performance of the alloy welding wire. Background technique [0002] High-strength alloy welding wire is a low-carbon alloy structural steel wire, mainly used to produce φ1.2-2.0mm high-strength welding wire, which is used in the welding of important construction machinery, ships, and aerospace launcher components. The representative varieties are H04SiMnCrNiMoV, H10SiMnCrNiMoV and H20SiMnCrNiMoV, etc. The alloy welding wire must have good performance, especially the tensile strength, surface quality and hydrogen content of the welding wire are high to prevent hydrogen embrittlement after welding. When low-carbon alloy welding wire is in a humid air environment, especially in the presence of external electrolytes (such as hand sweat or ...

AI Technical Summary

Problems solved by technology

In particular, strict technical requirements are put forward for the sealing of annealing equipment, equipment preparation for vacuuming and preparation of protective atmosphere, and the maintenance cost of annealing equipment is also high

[0010] 2. The production cycle of welding wire annealing is long and the cost is high

[0011] 3. There are differences in the annealing structure and properties of welding wire

Therefore, there is a certain difference in the performance of the welding wire

[0012] 4. The cold-drawn finished welding wire is ultrasonically cleaned to a bright state, and the final vacuum packaging cost is also high, and the transportation is inconvenient and easy to be damaged

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