RU1329037C

RU1329037C - Method of manufacturing electrode-tool for electrochemical machining to size

Info

Publication number: RU1329037C
Authority: RU
Inventors: Т.А. Казакова; В.А. Мельников
Original assignee: Научно-исследовательский институт технологии и организации производства двигателей
Priority date: 1983-11-10
Filing date: 1983-11-10
Publication date: 1993-11-30

Abstract

Изобретение относитс к области машиност- роейил, в частиоаи к изготовлению электродов - инструментов, используемых дл размеров электрохимической обработки металлов Цепью изобретени вл етс повышение стойкости э/1ектрода - инструмента и производительности его изготовлени Указанна цель достигаетс тем, что в способе изготовлени электрода-инструмента до электрохимической обработки, включающем нанесение на заготовку электрода - инструмента, изолирующего покрыти и последующую его обратку, в качестве изолирующего покрыти провод т путем его оксидировани , а после оксидировани нерабочие участки электрода-инструмента пропитывают бакелитовым лаком.The invention relates to the field of mechanical engineering, in particular to the manufacture of electrodes - tools used for the sizes of electrochemical processing of metals. The invention is aimed at increasing the durability of the electrode electrode and the productivity of its manufacture. This goal is achieved by the fact that in the method of manufacturing the electrode tool electrochemical treatment, including applying to the workpiece an electrode - an insulating coating tool and its subsequent return, as an insulating coating It is carried out by its oxidation, and after oxidation, non-working areas of the electrode-tool are impregnated with bakelite varnish.

Description

Изобретение относитс к области машиностроени , в частности к изготовлению электродов-инструментов, используемых дл размерной электрохимической обработки металлов и трафаретов дл элekтpoxими- ческого маркировани .The invention relates to the field of mechanical engineering, in particular to the manufacture of electrodes-tools used for dimensional electrochemical processing of metals and stencils for electrical marking.

Целью изобретени вл етс повышение стойкости электрода-инструмента и производительности его изготовлени .The aim of the invention is to increase the durability of the electrode-tool and the productivity of its manufacture.

Пример. На рабочие участки заготовки электрода-инструмента из нержавеющей стали наносили алюминиевое покрытие толщиной 0,15-0,2 мм. Дл нанесени покрыти использовали электрометаллизатор ЭМ-9 ручного типа или ЭМ-6-стационарный.Example. An aluminum coating 0.15-0.2 mm thick was applied to the working sections of the stainless steel electrode tool blank. An EM-9 electrometallizer of manual type or EM-6 stationary was used for coating.

После нанесени алюминиевое покрытие оксидировали методом микродугового оксидировани в злектролите-раствор гек- саметафосфата натри в дистиллированной воде - 5% при плотности тока в импульсе 5-100 А/дм, напр жении 50-500 В, в теме-, ние 20-30 мин. Полученна пориста пленка окиси алюмини на нерабочих участках электрода-инструмента пропитывалась бакелитовым лаком. Электрод-инструмент ис- пытывали при электрохимической обработке заготовок из титана, жаропрочных сталей и простых сталей при следующих режимах:After application, the aluminum coating was oxidized by microarc oxidation in an electrolyte solution of sodium hexametaphosphate in distilled water — 5% at a pulse current density of 5–100 A / dm, voltage of 50–500 V, in the course of 20–30 min. . The obtained porous alumina film was impregnated with bakelite varnish on non-working areas of the electrode-tool. The tool electrode was tested during the electrochemical processing of titanium, heat-resistant steels and simple steels in the following modes:

Claims

The claims

METHOD FOR PRODUCING AN ELECTRODE-TOOL FOR DIMENSIONAL ELECTROCHEMICAL TREATMENT, including applying an insulating coating to the working sections of the workpiece of the electrode electrode tool and its subsequent processing, characterized in that, for the purpose of

Editor KGTimonina Order 3333

Compiled by E. Zalmanov

Tehred M. Morgenthal Corrector L. Pilipenko

Circulation

NGO Search for Rospatent 113035. Moscow, Zh-35. Rauska nab., 4/5

Production and Publishing Plant Patent, Uzhgorod. Gagarin St. 101

0

5

0

5

Feed rate

tool 2-3 mm / min;

Voltage 15-258;

Electrolytes

NaCI solution (15-22%)

NaN03 solution (5-10%)

The life of the electrode-tool was 80-100 hours

When using an electrode-tool made in a known manner, the service life is 5-16 hours.

The complexity of manufacturing the electrode-tool of the proposed method is 2 hours 10 minutes, while in the manufacture of the electrode-tool in a known manner, the complexity is 8 hours and 18 minutes.

Thus, the proposed method for manufacturing an electrode tool for electrochemical processing provides, in comparison with the known method, an increase in the durability of the electrode tool and its productivity.

v56) Copyright certificate of the USSR No. 529040, cl. B 23 H 7/22, 1974.

USSR copyright certificate NS 285144, cl. B 23 H 7/22, 1969.

To increase the durability of the tool electrode and the productivity of its manufacture, an aluminum coating is applied as an insulating coating, the coating is treated by oxidizing it, and after oxidation, non-working areas of the tool electrode are impregnated with bakelite varnish.