Kylmähartsi F-930 no-bake resin

Binding agent for cast moulds and cores, cures at room temperature and binds the sand to endure casting conditions

Special features




  • formaldehyde and phenol-free
  • contains no water 
  • nitrogen content 0% 
  • very strong

  • easy to empty after casting

  • good dimensional accuracy

  • hardening time easy to adjust

  • low cleaning




Materials

Package Size Product Code
Kylmähartsi F-930 200 kg/200 l T8020.200
Kylmähartsi F-930 cont T8020.994
Kylmähartsi F-930 kontti T8020.992
Type/binder

Special furan resin

Density/specific weight

1110...1140 kg/m³

Mixing ratio

Resin F-930 1 % of sand weight
Catalyst K-1900 0.33 % of sand weight

Working conditions

Used for steel and light metal castings.

Package sizes

200 l drum, 1000 l container

Storage

Can be stored unopened in a well ventilated, cool place for 3 months.

Instructions for use

A typical mixing ratio is 1-1.5% of resin to the amount of sand. The suitable amount of catalyst is 30-50% of the resin amount used.
The final mould strength depends on the binder, dosage, sand quality and curing conditions. A higher binder dosage is recommended for core moulding.
Different catalysts and their addition amounts are used to adjust the reaction speed. Higher amounts of catalyst speed up the curing process, but can lead to lower final strengths. Adding too much catalyst (over 60%) will result in a longer stripping time.
The sand must be free from alkaline impurities, preferably washed, cooled and dry. The temperature of the sand should not exceed 35 °C, in order to avoid premature curing. The higher the sand temperature, the less catalyst is needed and correspondingly, the lower the sand temperature, the higher dose of catalyst is needed. No-bake resin can be used as such with neutral and acidic sand grades (quartz, chromite, zircon etc.).

Properties of mixture


 BL (min) 4...6
 ST (min)                                       20...30
 Flexural strength (N/cm2 )   1h   160...200
  2h   320...360
  24h   400...450


Additional information

The information given in this product data sheet is based on our tests and our practical knowledge. The technical data is defined in standard conditions. Variations in local working conditions will affect the product performance and result. The result is also strongly affected by working methods. We guarantee the high quality of our products according to our Quality Management System. No liability can be accepted from incorrect use of the product or prevailing conditions, over which we have no control. Thus, we cannot be held responsible for the final result. The user of the product must test the product’s suitability for the intended application.

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