Tool body and blade separating method of embedded and brazed tool

Abstract

The invention discloses a tool body and blade separating method of an embedded and brazed tool. The method includes the steps that the tool with a tool body capable of being recycled is subjected to chemical oil contamination removing, rinsed and blown to be dry, then the tool enters a soaking solution in a chemical dissolution soaking tank to be soaked at the normal temperature to enable brass soldering flux on the tool to be completely dissolved, a hard alloy blade and the high-quality carbon steel tool body are effectively separated, the tool body obtained after separation is rinsed through cold water twice, subjected to JML normal-temperature phosphorization, then rinsed, blown to be dry and subjected to sand blasting, and residues on the tool body are thoroughly removed. The soaking solution is a mixed solution of nitric acid with the concentration of 70% and phosphoric acid with the concentration of 85%, the volume ratio of the nitric acid to the phosphoric acid is 7:5, the soaking solution can not corrode the tool body, and therefore the size of the tool body is guaranteed. The tool body obtained through separation with the method is free of deformation and corrosion, and the original size of the tool body can be guaranteed; meanwhile, the tool body is subjected to phosphorization and sand blasting, and the tool body obtained after separation is prevented from being corroded; and meanwhile the method is easy to operate and low in cost, and waste liquid is nontoxic and environment-friendly.

Description

technical field [0001] The present invention provides a method for separating the blades of the discarded high-quality carbon steel blades with inlaid and brazed hard alloy blades. The separated blades are not deformed or damaged by corrosion, and can be recycled and reused. , especially conducive to the recovery and reuse of sophisticated and expensive cutter bodies. Background technique [0002] At present, the cemented carbide cutting tools used in machining, in addition to the replaceable machine-clamped blade cutting tools used in turning tools and milling cutters, still use a large number of welded carbide cutting tools, especially reamers, due to their tolerances Small, not suitable for the use of replaceable machine-clamped blade cutters, and welded carbide blade cutters are still used. After the cemented carbide blade is damaged or worn out during production and use, the entire tool is discarded, and it is a lot of waste to sell it as scrap steel. [0003] For a l...

AI Technical Summary

Problems solved by technology

After the cemented carbide blade is damaged or worn out during production and use, the entire tool is discarded and sold as scrap steel, which is a great waste

[0003] For a long time, in order to achieve the purpose of replacing the blade and reclaiming the cutter body, people have used many physical and chemical methods, such as oxygen welding heating method, chromic anhydride chemical dissolution method, etc. Although these methods can separate the cutter body and blade, the deformation of the cutter body is serious and corrosion, neither can be recycled

China Public Patent No.: 951113704, "Film-coated Soaking Method and Device for Renovating Wasted and Complicated Precision Welding Tools" This patent proposes a chemical separation and shedding blade technology. The soaking solution described in the patent is concentrated nitric acid and concentrated hydrochloric acid. The volume ratio (6~20): 1 mixed solution will cause dissolution and corrosion to the cutter body, and the geometric size of the cutter body will change to a certain extent, which is not conducive to the embedded positioning and size guarantee of the new blade