Technological method for reducing defect of extrusion rod

Abstract

The invention discloses a technological method for reducing a defect of an extrusion rod. According to the technological method, an unleaded alloy electro-magnetic induction melting furnace serves as a melting furnace, and metal melting liquid is pumped into a heat preservation furnace made of the same titanium alloy for continuous casting after refinement, so that oxidation of the metal melting liquid and lead-in of oxidation impurities on the surface of the metal melting liquid are avoided; casting ingot components can be prevented from generating segregation effectively by a process that continuous casting is conducted by a condenser; the mass of a sawed casting ingot is greater than 35KG; the defect of a product due to a joint between the ingots in the traditional casting extrusion process is reduced effectively; and a casting ingot oxidation film, the segregation of the product and breakage of a follow-up wire drawing technology are avoided by utilizing the unleaded titanium alloy electro-magnetic induction tin melting furnace and the titanium alloy liner heat preservation furnace and adopting a horizontal continuous casting method, so that the production quality of a drawing wire is improved, the production cost is saved, and the technological method can be used for industrial production.

Description

technical field [0001] The invention relates to a continuous casting process, in particular to a process for reducing defects of extruded rods, and belongs to the field of solder production. Background technique [0002] The manufacturing process of traditional solder wire is roughly: smelting → ingot casting → extrusion → wire drawing → winding → packaging, that is, after casting into extruded ingots, use a press to extrude and then draw wires. Few companies use continuous casting French process to produce solder wire. The problems caused by traditional casting molding are: [0003] 1. The extruded rod is formed by casting. During the casting process, there will be an oxide film on the surface of each ingot. During the extrusion process of the ingot, the oxide film will cause defects such as slag inclusions in the extruded wire. In the subsequent wire drawing process, these defects will gradually appear as the wire diameter becomes smaller, causing the wire to break durin...

AI Technical Summary

Problems solved by technology

[0003]1. The extruded rod is casted. During the casting process, there will be an oxide film on the surface of each ingot. During the extrusion process, the ingot is oxidized The film will cause defects such as slag inclusions in the extruded wire. In the subsequent wire drawing process, these defects will gradually appear as the wire diameter becomes smaller, causing the wire to break during the wire drawing process and affecting the wire drawing production efficiency. At the same time, it will also increase the chance of defects in the final product

[0004]2. In order to prevent segregation of alloy components, the mass of single cast ingot in the traditional solder wire manufacturing process will not be too large, generally not exceeding 10KG, In this case, during the extrusion process, there will be more joints between ingots, and extrusion defects such as pores will increase, which will also affect the production efficiency of wire drawing and increase the probability of defects in the final product.

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