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Distributor (authorized representative) to supply grinding machines (grinders) to industrial enterprises of Russia

Engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), Russia, has been successfully working with a number of Russian industrial enterprises at the local market for more than 20 years. Since the company’s founding, it has acquired immense engineering experience, market reputation, and has realized more than a hundred large-scale projects at the industrial plants in Russia. Our company is continuously in search of new business partners, who consider Russian market investment-attractive and want to boost their sales in the region, as well as expand their field of activities and enter a new international level. 

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We are interested in cooperation with the manufacturers of grinding machines, who are looking for an official and reliable distributor to supply their equipment to the industrial plants in Russia.

The company’s top management and sales team are well acquainted with the Russian market, its mentality and laws; they also understand industrial specifics of the financial and economic activities of the Russian customers. All our sales managers have a large customer database, extensive experience of successful sales and well-established connections with the potential buyers of your grinders. This allows our managers to promptly set out the most promising directions for promotion and to ensure a rapid entry of the products into the promising Russian market. Our employees, who are fluent in English and German, are focused on working at the international market with the supplies of foreign equipment.

Our team of experienced engineers, who can handle the most serious technical problems, constantly keeps in touch with the Russian customers, holds meetings and delivers presentations regarding the latest achievements of our manufacturing partners. They point out the engineering challenges and actively communicate with all the departments at Russian plants. That is why the specifics of doing a business in the Russian Federation are well-known to us, and we also know the equipment of the local industrial plants and their up-to-date modernization needs.

Once we become your authorized representative in Russia, our marketing staff will carry out a market research in order to check the demand for grinding machines  , will submit a market overview for grinders that you offer and evaluate the needs for this type of equipment at local plants. Our specialists will also estimate the potential and capacity of this market at local industrial plants. Our IT-team will start developing a website for your products in Russian. Our experts will assess the conformity between your grinders and customer needs as well as analyze the common reaction to the new goods in general. We will look into the categories of potential customers, and pick out the largest and the most promising plants.

Upon becoming your authorized agent on the territory of Russia, ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will obtain certificates, if required, for a batch of the goods, for various types of grinding machines  in compliance with Russian standards. We can also arrange the inspection in order to obtain TR TS 010 and TR TS 012 Certificates. These certificates provides permission to operate your equipment at all industrial plants of the EAEU countries (Russia, Kazakhstan, Belarus, Armenia, Kyrgyzstan), including the hazardous industrial facilities. Our company is eager to assist in issuing Technical Passports for grinding machines  as per Russian and other EAEU countries’ requirements.

Our engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), collaborates with several Russian design institutes in various industrial segments, which allows us to conduct preliminary design as well as subsequent design works according to the standards, construction rules and regulations that are applicable in Russia and other CIS countries. It also enables us to include your grinding machines  into the future projects.

The Company has its own logistics department that can provide packing service, handling as well as the most efficient and cost effective mode of transportation of the goods (incl. over dimensional and overweight goods). The goods can be delivered on DAP or DDP-customer’s warehouse basis in full compliance with all the relevant regulations and requirements that are applicable on the Russian market.

Our company has its own certified specialists who will carry out installation supervision and commissioning of the delivered equipment, as well as further guarantee and post-guarantee maintenance of grinding machines. They will also provide necessary training and guidance for the customer’s personnel.

Overview

Grinding and its types

Grinding is a process, in which a work piece is machine by cutting using grinding wheels and other abrasive materials. The grinding wheels are composed of abrasive material of different grain size and very high hardness, which is close to the hardness of a diamond. The grains of the abrasive material are held together in solidified binder.

When grinding wheel rotates, abrasive grains come into contact with machined surface and remove tiny chips of material from the surface.

Individual grains have different ability of layers removal. The shape of grains varies, their sharp edges are differently arranged, which explains the different layer removal by grinding wheels from the machined surface. Some of them work as cutter blades, others scrape and scratch. Friction in the machining zone is high enough, and the temperature reaches 2000 degrees if without any coolant.

When the machined material is too hard, grains of the grinding wheel blunt faster. For grinding, more solid materials grinding wheels with less resistance tearing grains are selected. In case of blunting and clogging of the grinding wheel, burns, stains, and metal crushing space appear on the grinding surface. High hardness of grains in grinding wheels enables machining of not only usual material, but also of solid hardened metal, metal ceramic alloys that are used in production of cutting tools.

When grinding, the result is achieved with high accuracy (up to 1 - 2 accuracy class) and high finishing characteristics of the machined surface (9 - 12 condition grade).
1) grinding instead of blade cutting on a black surface;
2) precise conventional grinding method, consisting of the preliminary and finishing one;
3) fine grinding, which consists in finishing;
4) grinding for tool sharpening.

Nature of the machined surface defines the following types of grinding:
1) External cylindrical grinding. So it is possible to grind cylindrical, tapered and shaped surfaces of rotary bodies;
2) internal grinding. It is used for grinding of holes;
3) Surface grinding (plane);
4) Grinding surfaces of particular forms (gear teeth, threads, splined surfaces, spheres, etc.).

Grinding wheels

Abrasives may be natural minerals and synthetic substances of high hardness. The main indicators of grinding wheels are: material grit, grit, race ligament toughness circle, circle pattern, and shape and size of the circle. The relative hardness criterion of the abrasive material is the ability of a material to scratch the surface of another material. In this regard, the materials are classified into 10 classes.

The hardest material is a diamond (10th grade), while talc has the softest hardness index (1st class). For grinding wheels, abrasives suitable hardness at least 7th grade.

The grinding wheels are present binders (ligament), subdivided into inorganic and organic.

Inorganic ligaments are ceramic. As part of the ceramic cords, fire clay, kaolin and feldspar are present. This bundle has a high waterproof and heat resistance and chemical resistance. Wheels with ceramic cords retain the profile shape well, but they are not resistant to shock and bending.

Organic ligaments are presented by bakelite and volcanics, they provide the grinding wheels with strength, elasticity, and insensitivity to shocks. However, as a disadvantage, they have a very dense structure, low porosity, thus quickly filling the pores of the metal with chips and dust. Under temperatures below 200 degrees, these wheels soften. The main types of grinding wheels are disc, flat, bowl and plate ones.

Shape selection is defined by the nature of surface to be processed and grinding method.

Cutting elements and cutting forces at circular grinding

Cutting speed is the relative speed during rotation of the grinding wheel and a work piece to be ground calculated in m/second.

V = Vk = п·Dk·nk / 1000 m/s,

Where Vk is a relative rotation speed of the grinding wheel;
Dk is the diameter of the grinding wheel;
nk is a number of rotations of the grinding wheel.

Rotation speed of a work piece to be ground:

Vwp = С·dzwp / Тmtxsy m/min,

Where С is a factor depending on the type of grinding and material to be ground;
Т is resistance of the grinding wheel;
Dwp is the diameter of the work pieces to be grounded;
t is cutting depth;
s is feed per 1 turn of the ground work pieces;
z, y, x, mare exponents.

Number of rotations of the work piece to be ground:

nwp= 1000·Vwp / п·dwp

Power of engine for rotation of a grinding wheel:

Nк = Pz·Vк / 1,36·75nkW,

Vk is speed of the grinding wheel;
Pz is tangential force;
n is drive efficiency

Grinding machines

Among the grinders the following main types of machines can be allocated:

1) Cylindrical grinding machines (external);
2) Internal grinding machines (hole grinding);
3) Reciprocating surface grinding machines (for grinding surfaces);
4) Tool grinding machines;
5) Screw thread grinding machine (thread grinding);
6) Gearing grinding machines (for gear tooth grinding);
7) Spline grinders (for spline surface grinding);
8) Spherical Grinding Machines.

Grinding machines for cylindrical grinding (external) can be divided into 3 groups:

1) Cylindrical grinding machines (utility);
2) Centreless grinding machines;
3) Cylindrical grinding machines (specific operations, grinding of crankshaft necks).

Such reciprocating grinding machines are generally used for grinding of relatively long surfaces, machines with transverse feed solution are used to grind short cylinder type, taper and shaped surfaces of the high hardness work pieces.

Short surfaces of high hardness work pieces are ground to deep-laid method. This is when almost all of the metal layer is removed for 1 wheel travel at a small longitudinal feed. Then it is finally polished in the usual way: with line feed or plunge.

Plunge grinding belongs to the most productive method for precise cylindrical grinding, in which the wheel width should be sufficient for covering the entire grinding surface. This method is well suited for grinding cylinder type and shaped surfaces. Grinding is carried out simultaneously with several wheels. In cylindrical grinding machines the work piece is ground at its fixing in the chuck or special devices.

The structure of a typical versatile cylindrical grinding machine includes frame, table of 2 work pieces, the grinding wheel headstock, headstock and tailstock. The upper work piece of the table can rotate at an angle to the axis of the grinding wheel spindle for flat cones grinding. Steep cones are ground with the rotated grinding wheel headstock. In these machines you can grind cylinder type, tapered and shaped surfaces, grooves and the plane of work piece ends.

Centerless grinding machines belong to the group of high-performance ones, at grinding in these machines two wheels are used - working and driving, rotating in the same direction but at different speeds. As friction between the driving wheel and the work piece to be machined is higher than that between the work piece and working wheel, it is the driving wheel that captures the work piece, dragging it into rotation. Grinding on these machines can be made with traverse feed or plunge and usually cylinder type, cone shaped and short surfaces are ground in them.

Benefits of centerless grinding machines are as follows:

1) High performance due to the b rigidity in correlation of the machine to the tool and the work piece, ability to perform grinding with higher cutting depth and feed; ability to continuously grind at through feed;
2) no need to do preliminary pivot recesses in the work pieces to be ground;
3) precise work piece fixing in the centers or devices (no errors);

The negative moments of grinding on centerless grinding machines include:

1) The ground surface is difficult to give a desired position in relation to other surfaces of the work piece;
2) difficulty in grinding discontinuous surfaces.

Among the internal grinding machines attention should be paid to 3 types:

1) with rotation of the ground work piece;
2) with rotation of loose ground work piece (centerless);
3) with planetary spindle at fixed work piece (motionless).

When grinding in the machines with a work piece rotating, the work piece is adjusted into a chuck or a device on a spindle, making the work piece rotate. Grinding wheel makes reciprocating movements along the work piece during rotation around its axis, removing a certain layer of metal for each grinding cycle. Typically, such machines produce internal grinding. Centerless internal grinding machines, where cylindrical and conical holes of cylindrical work pieces are ground, are characterized by the following operational scheme:

Ground work piece is pressed against the support and drive roller using folding pressure roller. Grinding wheel rotating about its axis, is fed in the transverse direction at the end of each turn to this axis. Ground work piece makes reciprocating motion along its axis together with the rollers. Machines of this type are provided with, as a rule, the magazine devices for the purpose of full automation.

Machines with planetary spindle are designed for grinding holes in large work pieces. At plants internal grinding semiautomatic machines are usually used. Upon fixing the work piece to be ground grinding wheel is brought to it at an accelerated pace when the longitudinal and transverse feed are switched on, and preliminary grinding holes are produced. At the time of grinding step gage in the machine spindle tries to enter the ground hole under the action of the spring at each turn of the grinding wheel. Once the preliminary grinding is completed and preset size of the ground hole is reached the first step of the gage enters into this hole. Thereafter, the grinding wheel is automatically retracted from the work piece, automatically corrected in the retracted position and re-enters the ground hole. Fine grinding stage is performed with a smaller cross-feed. Upon reaching a predetermined hole size the second stage of the gage enters it, the grinding wheel again automatically and at a fast pace is removed from the ground work piece and the machine stops.

This type of grinding is used for:
1) surface machining of special hardness;
2) precise machining of holes.

The disadvantages of this type of grinding are:
1) Need to use small diameter grinding wheel, as a consequence - rapid deterioration of the wheel;
2) Overhanging position of the grinding wheel at a low value of spindle diameter ratio to its departure, as a consequence - difficulty in achieving high rigidity;
3) Need to work with smaller cutting depth and feed rates than with external cylindrical grinding;
4) Need for frequent revision range due to the relative wear.

Surface grinding machines are divided as follows:

1) For precision work:
 a) Working by periphery of the wheel;
 b) Working by wheel end;
2) For rough grinding (unilateral or bilateral).

When grinding with wheel end, peripheral speed of rotation of individual end points varies. To make this less influence on the accuracy and quality of surface grinding, grinding wheels are made similar to bowls or plates. Large diameter wheels are formed of composite segments fixed on general metal disk. Thanks to this embodiment of grinding wheels, safety increases, heat generation reduces. In small-scale production grinding machines that process using the wheel periphery are more common; they are equipped with a rectangular table. They have a lower performance in comparison to the machines working with wheel end, and generate less heat, however the works that can be performed are more variable, for example, and polishing bottom of grooves.

Equipment for metallurgy

Upon becoming the official distributer of grinding machines our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), carries out the following: finds the buyers of your products on the market, conducts technical and commercial negotiations with the customers regarding the supplies of your equipment, concludes contracts. Should a bidding take place, we will collect and prepare all the documents required for the participation, conclude all the necessary contracts for the supply of your equipment, as well as register the goods (grinders) and conduct customs clearance procedures. We will also register a certificate of transaction (Passport of Deal) required for all foreign trade contracts in the foreign currency control department of the authorized Russian bank so that currency transaction could be effected. If required, our company will implement an equipment spacing project in order to integrate your equipment into the existing or newly built production plant.

We are convinced that our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will become your reliable, qualified and efficient partner & distributor in Russia.

We are always open for cooperation, so let’s move forward together!

Intech GmbH SARLIntech GmbH SARL