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
Links
Materials
| Package Size | Product Code |
|---|---|
| Kylmähartsi F-930 200 kg/200 l | T8020.200 |
| Kylmähartsi F-930 cont | T8020.994 |
| Kylmähartsi F-930 kontti 3" u | T8020.986 |
Special furan resin
1110...1140 kg/m³
Resin F-930 1 % of sand weight
Catalyst K-1900 0.33 % of sand weight
Used for steel and light metal castings.
200 l drum, 1000 l container
Can be stored unopened in a well ventilated, cool place for 3 months.
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 |
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.