FAQ – ECM Technologies

We have experience in developing many processes of precision electrochemical machining for many years.
Our highly qualified specialists can be proud of having practical experience in the use of PECM technology and our electrochemical machines SFE for manufacturing many complex precision products.
Improvement of our equipment, adaptation of PECM technology for manufacturing of many high-precision products are only some of our development goals in the very near future.

Precision Electro-Chemical Machining (PECM) of Metals is a modern high-tech high-precision method of machining conducting materials and alloys, which is based on fast dissolution of the processed detail material with simultaneous exposure to pulse current with electrolyte running through the interelectrode spacing between the processed detail material (anode) and the tool electrode (cathode).

During the process of precision electrochemical machining direct or reverse copying of the tool electrode shape and dimensions over the whole surface of the processed workpiece is performed.

By implementing only one electrochemical machining operation in the technical process of manufacturing articles it is possible to reduce the performance time of manufacturing a finished product by several times, eliminating a great number of mechanical and manual finishing operations, release workers and power intensive equipment.

Electrochemical machines SFE^® are designed for precision electrochemical dimensional machining of conductive steel alloys and alloys with unusual properties.

Traditional methods of metal processing in our progressive time have already become outdated and do not give the desired quality and precision.

SFE machines solve these critical points, allow to manufacture products that are difficult to produce with the help of traditional technologies.

SFE provides a full control of all processes occurring during machining and creates an ideally accurate, mirror-processed product.  Electrochemical precision machines SFE cover a wide range of processed materials: heat-resistant, high-speed, stainless, tool, alloy, structural, corrosion-resistant, high-carbon, chromium steels, as well as copper, bronze, brass, nickel, non-ferrous alloys, precious metals, magnets and magnetic alloys, stellite.

Precise Electrochemical machining (ECM, PECM) is based on the ability of a metal to dissolve as a result of oxidic reactions occurring in the medium of the electrically conducting solution (electrolyte) under electric current influence.
The dissolution process is called electrolysis.
Specific features of the electrolysis process are the spatial oxidation (dissolution) of the anode and the reduction (deposition) of the metal on the surface of the cathode. During the electrolysis, the anode and the cathode dissolve into an anion (negatively charged ions) and a cation (positively charged ions).
When these particles interact with the electrolyte, a forced reaction occurs under the electric field forces – to move accordingly to the cathode and the anode.
The resulting reaction of conversion into positive iron ions forms iron oxide hydrate which precipitates as an insoluble chemical compound. Thus, the electrochemical anodic dissolution of iron occurs.
ECM uses electrolytes in which cations do not precipitate during electrolysis on the surface of the cathode.
This method provides huge advantages of ECM: the invariance of the shape of the electrode tool.

The electrochemical machine SFE has the technology of mirror surface machining, which allows to get rid of unevenness and burrs on a medical instrument.

For the medical industry, the use of the electrochemical precision machining is critically important. The electrochemical machine SFE has the technology of mirror surface machining, which allows to get rid of unevenness and burrs on a medical instrument. Pulsed electrochemical machining is the work basis of our machines, which is ideal for the precision nano-making of a huge number of medical instruments.

The electrochemical machining method on SFE machines is widely used at leading souvenir enterprises and mints all over the world.
Precision and quality of processing allow obtaining an absolutely smooth surface, the most well-defined drawing and contour of a product.

Our machines produce an ideally precise die tool for making coin products of any kind and complexity.
Thanks to innovative technologies in the field of electrochemical machining, we have achieved significant improvements in all the processes of creating coin and souvenir products, have made the production faster, more qualitative, and more prec/ise.

Electrochemical machines SFE are used at leading enterprises all over the world for manufacturing all types of die tooling in the production of various jewellery products, cutlery and adornments. The quality of obtained products greatly exceeds their analogs, produced by the usual methods.

To obtain an ideal product, the technology of electrochemical dimensional machining and electrochemical copying is used, which allows to produce any kinds of jewellery products with perfect accuracy.
Precision electrochemical machining has found wide application in the manufacture of small parts from most metal alloys and precious alloys.

Production of tools and fasteners with the use of the electrochemical machine SFE will allow to speed up the production process, make it cheaper, make your product high-quality and not to worry about design and geometric obstacles.

The tool industry, tool making, tool production at any enterprise is one of the most important units of the enterprise, providing workshops and departments with technological tooling, die tooling, punch tooling. In many respects, the quality of the final product depends on the quality of products manufactured by tool production specialists. It is exactly in the tool production that the technology and equipment for dimensional electrochemical machining have found their main application.

Electrochemical precision machines SFE can embody the most sophisticated technical solutions in the construction of reliable and precision components and mechanisms of a car.
The automotive industry is one of the most progressive and developing industries.

Manufacturers always forge ahead and progress in their ideas and technologies and are looking for new ways to implement them. Electrochemical precision machines SFE can embody the most sophisticated technical solutions in the construction of reliable and precision components and mechanisms of a car.

STANKOFINEXPO specialists have designed special electrochemical machines, developed the technology of precision electrochemical machining of parts of aviation and aerospace units.

Our high-precision technology is used in the aviation and aerospace industry in the manufacture of the latest developments of aircraft engine parts, parts and components of turbines, blisks and bladed disks.
The precision electrochemical machining method has long been in service with the largest manufacturers of the aviation and aerospace industry.
In such a precise sphere, the best solutions for designing an ideal product structure are needed.
The part produced on the electrochemical machine will have a high wear resistance and an ideal precision.
Our technology allows to handle without difficulty the most hard-to-process materials, such as heat-resistant steels and alloys, stainless, alloyed, structural, corrosion-resistant, high-carbon, chromium, chromium-nickel, high-speed steels.

Electrochemical machines SFE^® can be highly efficiently used for finishing processing of stamp forms that require high surface accuracy, as well as for making forming surfaces, reliefs, embossing and forming dies, finished products in small-scale and serial production conditions of various industries:

• Manufacture: dies, molds, matrices, labels, punches, embossing dies, engravings;
• Production of metalware thread-rolling and cold-setting tools, dies (cutting dies, punches, matrices) for the manufacture of engineering fasteners (bolts, nuts, screws, pins, rivets, self-tappers, etc.);
• Manufacture of sealing ends, spline joints, external and internal gear wheels, tooth gears having a complex profile and a teeth line;
• Manufacture and processing of nozzle tip openings;
• Manufacture of punches and matrices for jewellery and souvenir dies;
• Forming of the airfoil and root of compressor and turbine blades with a surface area of up to 120 cm²;
• Manufacture of forging dies, including engravings and flash bridges of forging dies of GTE blades, constant velocity drives;
• Manufacture of bladed disks;
• Electrochemical deburring;
• Manufacture of various industrial products and goods with high indicators of precision, roughness in minimum time without wear of the electrode tool;
• Other technological operations that are difficult to perform with traditional processing methods.

• The forming machine SFE-8000M is built up with the products of the world’s leading manufacturers in the field of production of components for machine-tool industry.
• The maximum area of ​​the simultaneously machined surface and the end part of the blank (die) is 80 cm².
• The modern informative workstation FRONTMAN/ADVANTECH allows controlling all the processes of the SFE-8000M machine with comfort.
  Information on the machine status and the ongoing machining operations is displayed on the LCD monitor.
• The machine processing speed parameter depends on the material, complexity and depth of the relief and at the same time does not depend on the machining area and averages 0.32 mm/min.
• The machining accuracy, repeatability of dimensions and roughness fully depend on the material being processed and on the electrode tool and mirror its quality.
• For short-circuit protection of the source of the technological current of the machine and the electrode tool, the system of short-circuit protection and operating voltage stabilization is applied.
• Electrochemical copying and broaching ECM machine SFE-8000M is equipped with a built-in system of filtration, purification and supply of electrolyte, with adjustable pressure parameters.
• Processing on the electrochemical machine SFE-8000M is performed at low (less than 12 V) voltages using a 12% aqueous sodium nitrate solution (NaNO₃).
• The electrochemical equipment meets the requirements for noise emission and electromagnetic compatibility according to EU requirements.
• SFE 8000M machines can be installed in any technical premises with an even concrete floor, while occupying no more than 3.6 m².
• Electrochemical machine SFE 8000M is convenient in installation and transportation (separation of the machine into 2 parts is provided for).
• The equipment does not require special communication lines and is connected to the common exhaust and sewage system.
• For long-term stable and reliable operation of the electrochemical machine SFE-8000M everything necessary is included in the set – no additional purchase options.

The machine allows coping with the most complex and precise tasks in the manufacture of forming surfaces: dies, matrices, molds and other parts that require an ideal surface accuracy with a processing area of ​​up to 80 cm².
Advanced technology of our engineers.
The embedded experience and developments allow us to progress in the creation and improvement of our equipment.
SFE-8000M meets the higher requirements for area parameters and the processing speed. The choice of this model is suitable for already experienced manufacturers who want to introduce into their arsenal serious developments in the field of precision metalworking.

The electrochemical machine SFE-8000M is successfully used to produce a wide variety of parts from a huge number of industries:
• medical instruments;
• aviation and aerospace engine building;
• production of parts and spare parts for cars and tractors;
• a huge range of production of jewellery and souvenir products, heraldry, coin products,  the possibility of restoring historical products;
• consumer goods and much more.

  Most of these industries require an ideal surface quality and maximum durability for their parts, which is provided by electrochemical machining on our machine.
  Possessing small dimensions and not requiring special working conditions, the electrochemical machine SFE-8000M will be an excellent choice for a medium and large-scale production.

1. The electrochemical machine SFE-5000M is built up with the products of the world’s leading manufacturers in the field of production of components for machine-tool industry.
2. The modern informative workstation FRONTMAN/ADVANTECH allows controlling all the processes of the SFE-5000M machine with comfort.
   Information on the machine status and the ongoing machining operations is displayed on the LCD monitor.
3. The maximum area of ​​the simultaneously machined surface and the end part of the blank (die) is up to 40 cm².
4. The machine processing speed parameter depends on the material, complexity and depth of the relief and at the same time does not depend on the machining area and averages 0.3 mm/min.
5. The machining accuracy, repeatability of dimensions and roughness fully depend on the material being processed and on the electrode tool and mirror its quality.
6. For short-circuit protection of the source of the technological current of the machine and the electrode tool, the system of short-circuit protection and operating voltage stabilization is applied.
7. The electrochemical copying and broaching ECM machine SFE-5000M is equipped with a built-in system of filtration, purification and supply of electrolyte, with adjustable pressure parameters.
8. Processing on the electrochemical machine SFE-5000M is performed at low (less than 12 V) voltages using a 12% aqueous sodium nitrate solution (NaNO₃).
9. The electrochemical equipment meets the requirements for noise emission and electromagnetic compatibility according to EU requirements.
10. The equipment does not require special communication lines and is connected to the common exhaust and sewage system.
11. SFE 5000M machines are compact enough, can be installed in any technical premises with an even concrete floor, while occupying no more than 3 m².
12. The electrochemical machine SFE 5000M is convenient in installation and transportation (it is possible to separate the machine in 2 parts).
13. For operation of the electrochemical machine SFE-5000M everything necessary is delivered in the set – no additional purchase options are required for long-term stable and reliable machine operation.

Our engineers have thought through all the major particulars that relate to the equipment of this class:

• the most informative and convenient CNC with an LCD monitor;
• short-circuit protection, saving the electrode tool and the workpiece from destruction;
• environmental safety and cleanliness;
• minimum space requirements and compactness.

All these advantages make the SFE-12000M machine the best choice for the precision production, designed to solve high-tech tasks.

Our developments and experience in the production of electrochemical precision machines allow us to improve and refine our equipment.

The SFE-12000M machine can be used in the most complex industries, where the highest precision of all machine parts is required, to give the design a long service life and trouble-free operation, even under extreme exploitation.

A technologically new solution in the field of the precision electrochemical machine tool industry.
Pursuing the solution of exceptionally challenging tasks in precision machining of specialized dies and products of a large processing area, we have developed the electrochemical machine SFE-12000M for solving the most complex tasks and creating perfectly accurate parts.

The electrochemical machine SFE-12000M allows to process a huge spectrum of various parts and give them a mirror surface.
Increased productivity, the machining process takes even less time, and the accuracy of metal working is higher.
The technology allows processing a surface with an area of ​​up to 120 cm², which allows working with more dimensional and heavy parts.

Application of electrochemical machines SFE in the technical PECM process of manufacturing tooling, press molds parts, matrices, dies, introduction of the precision electrochemical machining method into the tool production significantly reduces performance time for manufacturing finished products, the cost of the production process, saves energy and manual labor.

STANKOFINEXPO Ltd. specializes in the development and implementation of its technologies in the production of genuinely high-quality and high-tech equipment for precision electrochemical machining of metals.

We have experience in manufacturing the electrochemical equipment since 1993.

SFE^® machines can compete with expensive competitors in terms of their technical characteristics and performance.

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В комплектация формообразующего станка SFE-12000М используется продукция ведущих мировых производителей в области производства комплектующих для станкостроения

Максимальная площадь одновременно обрабатываемой поверхности и торцовой части заготовки (штампа) составляет 120 см2

Управление станком SFE-12000M осуществляется с применением современной промышленной рабочей станции FRONT/ADVANTECH . Система управления предусматривает вывод информации о состоянии станка и проходящих процессах обработки на жидкокристаллический монитор.

Параметр скорости обработки станка зависит от материала, сложности и глубины рельефа и при этом не зависит от площади обработки и составляет в среднем 0,2 мм/мин.

Точность обработки, повторяемость размеров и шероховатость полностью зависят от обрабатываемого материала и от электрода – инструмента и зеркально повторяет его качество.

Для защиты от КЗ (короткого замыкания) источника технологического тока станка (ИТТ) и электрода-инструмента применяется система защиты от КЗ и стабилизации рабочего напряжения.

Копировально-прошивной электрохимический станок SFE-12000M оснащается встроенной системой фильтрации и очистки электролита, предназначенной для фильтрации, очистки и подачи электролита на станок SFE-12000M при регулируемых параметрах давления

Обработка на электрохимическом станке SFE-12000М осуществляется на низких (менее 12 V) напряжениях с использованием 12% водного раствора азотнокислого натрия (NaNO3)

Электрохимический прецизионный станок, оснащенный рабочей станцией FRONTM/Advantech , электрохимический станок SFE-12000M экологически чистый и безопасный;

Электрохимическое оборудование соответствует требованиям по шумовому воздействию и электромагнитной совместимости по требованиям EC.

Станки SFE-12000М могут устанавливаться в любых технических помещениях с ровным бетонным полом, при этом занимают не более 3,6 кв.м.

Станок SFE-12000 удобен в монтаже и транспортировке (предусмотрена расстыковка станка на 2 части).

Оборудование не требует прокладки специальных коммуникаций и подключается к общей вытяжной системе и канализации.

Для многолетней стабильной и надежной эксплуатации электрохимического станка SFE-12000М в комплект поставки входит все необходимое – никаких дополнительных покупных опций.