Method for producing magnetic medium of high-gradient magnetic separator

Abstract

The invention relates to a method for producing magnetic medium of high-gradient magnetic selector, wherein said method comprises that: it uses digit-control punch method to uniformly punch holes at two or more stainless steel plates; using Cr magnetic conductive stainless steel rod as medium rod which can high magnetic sensitivity and low correct force; putting plates on the welding tool, inserting medium rods in relative holes; aligning welding gum to the medium rods; adjusting the vertical distance between welding wire and medium rod at 6-20mm; starting welding switch; adjusting welding voltage, current to generate arc, weld, stop arc, and end, to connect one end of medium rod with plate. The invention has simple process and high efficiency.

Description

technical field [0001] The invention relates to the technical field of metallurgical beneficiation, in particular to a method for manufacturing a high-gradient magnetic selection magnetic medium. Background technique [0002] According to different beneficiation process requirements, the magnetic medium in the high gradient magnetic separator is composed of 1 to 2 thousand medium rods, which are arranged between the upper and lower positioning sheets in a corresponding and regular manner (with an interval of 2 to 5mm). The size of the dielectric rod is Φ2~Φ4, and the length is 60-150mm, as shown in Figure 1. The magnetic medium generally adopts Cr series magnetically conductive stainless steel rods, which have high magnetic induction intensity and low coercive force, and the positioning plate uses 0Gr18Ni9Ti series non-magnetically conductive stainless steel plates, which have good corrosion resistance and weldability. The welding wire used for welding the magnetic medium a...

AI Technical Summary

Problems solved by technology

[0003] It is necessary to weld 1 to 2,000 rods between the upper and lower thin steel plates (2 to 3mm), and to make the strength of the welded joint close to the performance of the base metal; therefore, there must be higher requirements for the welding of magnetic media. The magnetic medium welding generally adopts the manual brazing method. Although this welding method can ensure that the surface quality of the weld seam of the workpiece basically meets the requirements, due to the uneven heating (welding) method, the surface deformation of the stainless steel sheet is large and uneven. (≥4mm), which seriously affects the completion of the subsequent process. In addition, the fatigue strength of the joints cannot meet the requirements for use; for this reason, manual arc welding is also used for the welding of magnetic media. Although this method makes the fatigue strength of welded joints Can reach However, the same uneven heating (welding) method has not yet solved the problem of uneven deformation of the two flat surfaces. Moreover, it has the problems of long production cycle and low efficiency; there are also manual and semi-automatic argon arcs. The welding method is used to weld magnetic media, but the welding process is unstable, and virtual solder joints are prone to appear locally, resulting in problems such as fatigue strength of welded joints that cannot meet the requirements for use.

Images