Development of precision casting alloys and production

  • 27 years on the market!
  • Over 20 proprietary alloys
More on products
and alloys

OOO Linvar Research and Production Center is a developer of precision casting alloys with a specified, including minimal thermal expansion and a manufacturer of the highest possible precision products of them.

Production process

Technical task

We draw up a technical task together with you

Reconciliation

We coordinate with you the thesis assignment and terms

Alloy

We develop an alloy

Rigging

We prepare equipment

Component

We cast the detail

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Our alloys

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32НКБЛ-1

TCLE до 100 и 200° С

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32НКБЛ-2

TCLE до 100 и 200° С

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36НБЛ-1

TCLE до 100 и 200° С

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32НКХБЛ

TCLE до 200 и 300° С

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32НКХБЛ-1

TCLE до 200 и 300° С

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32НКМБЛ

TCLE до 200 и 300° С

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31НКМЛ

TCLE до 300 и 400° С

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31НКУЛ-1

TCLE до 200,300 и 350° С

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31НКУЛ-2

TCLE до 200,300 и 350° С

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33НКУЛ

TCLE до 200,300 и 350° С

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34НКУЛ

TCLE до 200,300 и 350° С

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30НКУЛ

TCLE до 200,300 и 350° С

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Our products

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Frame

TCLE20-100≤1,0×10-6 K-1

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Tooling

Tooling for products made of fiberglass
TCLE20-200≤3,5×10-6 K-1

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Casting

Casting of the laser system supporting structure
TCLE20-100≤1,5×10-6 К-1

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Casting

Casting of the supporting assembly of a silicon mirror of a super-power technological laser
TCLE20-100≤2,3×10-6 К-1

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Supporting part

Supporting part in the structure of the opto-electronic device
TCLE20-100≤7,5×10-6 К-1

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Supporting part

Supporting part in the structure of the spectrometer
TCLE20-100≤1,5×10-6 К-1

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Supporting part

Supporting part in the structure of the spectrometer
TCLE20-100≤1,5×10-6 К-1

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Casting

Casting of the optoelectronic device part
TCLE20-100≤5,0×10-6 К-1

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Substrate

Substrate of the metal mirror of the laser
TCLE20-100≤1,0×10-6 К-1

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Casting

Casting of the optoelectronic device part
TCLE20-100≤1,0×10-6 К-1

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Frame

Telescope frame ready for assembly
TCLE20-100≤1,0×10-6 К-1

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Stiffening ring

Stiffening ring
TCLE20-100≤1,5×10-6 К-1

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Stiffening ring

Stiffening ring
TCLE20-300≤3,2×10-6 К-1

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Our customers

Our history

The center was founded in 1992 on the basis of the Ural Polytechnic Institute n.a. S.M. Kirov and the Ural Optical and Mechanical Plant.

  • 1. Developments.

To date, we offer customers about 20 self-developed alloys with thermal expansion in the range from quartz glass (TCLE 0,5•10-6 K-1) to titanium (TCLE 8,5•10-6 K-1). A number of alloys belonging to this group have special properties, namely: improved casting properties, high damping characteristics, extended operating temperature intervals, increased corrosion resistance.

  • 2. Application.

Products manufactured from Invar alloys are successfully used in the fields requiring thermostability and minimum stresses in joints of elements. These are the following applications:

  1. - parts matched with materials having a reduced TCLE (ceramics, optics of all kinds, including quartz, crystalline silicon, germanium, graphite, etc.);
  2. - precision machine tool construction (basic parts, fastening points, guides of lathes, coordinate boring and grinding machines);
  3. - laser equipment (basic elements of lasers, elements that interface with power optics and so on);
  4. - products of measuring, control-adjusting and metrological equipment (basic parts of spectrometers, measuring machines, stands);
  5. - high-speed precision presses (plungers, racks, shell units);
  6. - castings of heat-resistant tooling of any complexity for the production of parts made of polymer-composite materials for the aviation and other industries (the dimensions of the tooling parts can be several meters; we have mastered the production of these parts from casting invars weighing several tons);
  7. - astronomical equipment (frames of optical products, telescopes);
  8. - cryogenic equipment;
  9. - our products can operate in the range of plus temperatures up to 500 °C and minus temperatures down to -269 °C.
  • 3. Purposes and Tasks.

  1. - the use of our invar and superinvar alloys instead of standard materials (steel, cast iron, aluminum alloys) makes it possible to increase the accuracy of large-sized products with temperature fluctuations, up to 15-50 times;
  2. - production of new items with previously unattainable precision parameters;
  3. - saving of metal materials and labor during machining, as the shape of the molded casting is as close as possible to the required shape of the part;
  4. - replacement of expensive, poorly machinable materials used as materials with a given thermal expansion (ceramics, sitall, molybdenum, tungsten, etc.);
  5. - we are developing casting alloys with thermal expansion approaching zero.

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