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Water binder for investment casting

Purpose and application of the Ultracast NSi binder

Ultracast NSi is a highly stable binder with polymeric and biocidal additives (made in Russia) for the manufacture of ceramic molds in the manufacture of castings by investment casting, used as an alternative replacement of ethyl silicate binders.

The advantages of the binder Ultracast NSi

The suspension prepared with Ultracast NSi binders has stable rheological characteristics, a long "survivability" cycle and minimal requirements for keeping the suspension in working order. Increased resistance to cracking during the application of the refractory coating and removal of the wax model mass from the cladding is achieved due to the modified copolymer incorporated into the binder.

  • Ultracast NSi perfectly combined with the main types of refractory fillers.
  • Ultracast NSi – eco-friendly and industrially safe material
  • In the manufacture of ceramic molds reduces the drying time of layers, compliance with the parameters of the microclimate of the site, the drying time of the layer can reach 1 hour.
  • When the first layer of the slurry is applied, it has an excellent wetting characteristic of the wax model, the suspension is applied evenly, excluding the formation of defects.

Technopark company has developed three modifications of binder Ultracast NSi :

  • NSi–U applicable for use on the first layer (high surface wettability, high resistance to cracking)
  • NSi is suitable for use on subsequent layers
  • NSi-P "reinforced" binder is applicable for products with complex configuration, and large-size castings.

Technical characteristics of binder Ultracast ® NSi

Indicator name

NSi

Nsi-U

Nsi-P

KNSi

KNSi-U

Hydrogen ion concentration

(рН), units.

 9,0-11,0

 9,0-11,0

 9,0-11,0

3,5-5,0

3,5-5,0

Presence of a wetting agent

+

+

Mass fraction of silicon dioxide, %

24,5-25,5

26-27

24-25

24,5-25,5

26-27

The diameter of particles, nm, not less

8,0

9,0

9.0

10

10

Polymer content, %

2

6

7

2

Presence of biocides

+

+

+

+

+