CERAFURAN R-701
(FURAN ACID NO BAKE)
Product
CERAFURAN R-701 is Available in two versions, depending on applications. Nitrogen free suitable for steel castings and another is with various nitrogen content suitable for ferrous and non-ferrous castings.
CERAFURAN is a ideal process for large castings such as machine tools, wind mill, cylinder blocks of marine engine. It is a two part process, resin is either co-polymer of Furfuryl alcohol with Urea-Formaldehyde or Phenol-Formaldehyde and catalyst is Sulphonic acid.
This is best process for mechanical sand reclamation compare to other no bake processes. The reclamation level with CERAFURAN R-701 is more than 90-92%.
Applications
CERAFURAN R-701 along with CERAFURAN C-710 is used for making mould and cores by no bake process for ferrous and non-ferrous castings. CERAFURAN offers best thorough curing characteristics. Flask less moulding is also possible with CERAFURAN process.
Physical Properties
| PROPERTIES | CERAFURAN R-701 | CERAFURAN C-710 |
|---|---|---|
| Appearance | Light brown clear liquid | Reddish brown clear liquid |
| Sp. Gravity @30°C | 1.15 – 1.25 | 1.20 – 1.30 |
| Viscosity by B4 cup@30°C | 15 – 30 seconds | 13 – 20 seconds |
| Free formaldehyde | < 0.5% | - |
| Shelf life from date of manufacture | 6 months | 12 months |
CERAFURAN C-710 is available in wide range, to suit the seasonal demands of bench life, strip time and for metallurgical properties.
Material Safety Data Sheet (MSDS) is Available on Request
Sand Mix Preparation
| Dry silica sand [AFS 50-60] (free from carbonates and chlorides) |
100 parts |
| CERAFURAN R-701 | 1.2- 2.0% based on sand |
| CERAFURAN C-710 | 30-60 % based on CERAFURAN R-701 |
Note:- For good quality reclaimed sand, addition level will be
| CERAFURAN R-701 | 0.9- 1.5% based on sand |
| CERAFURAN C-710 | 30-60 % based on CERAFURAN R-701 |
Sand mixing can be done in either batch or continuous mixer, but one should ensure for no free resin lumps in sand mix.
Addition level of CERAFURAN C-710 controls the bench life and strip time.
Mixing cycle:
Dry silica sand + CERAFURAN C-710-- mix for 1 – 1 ½ minutes
+ CERAFURAN R-701-- mix for 1 ½ - 2 ½ minutes
These are typical mixing times, which can vary with speed and type of mixer.
Bench Life- 5-20 minutes
Stripping time– 30 Minutes - 4 Hrs.
Strength Compressive
(Resin-1.5% of sand, Catalyst-40% of Resin)
| Time | Strength in kg/cm2 |
| 1 Hr | 5 - 10 |
| 4 Hrs | 20 - 25 |
| 24 Hrs | >30 |
Strength will vary with quality of sand and ambient atmospheric conditions.
Mould & Core Wash: We recommend water base refractory wash.
Shelf Life
Standard Packing
Storage & Handling
CERAFURAN R-701 and CERAFURAN C-710, should stored separately, away from direct source of heat, moisture under roof at below 30°C
Never mix CERAFURAN R-701 and CERAFURAN C-710 together in a container, without sand. Direct mixing of CERAFURAN R-701 and CERAFURAN C-710 cause violent exothermic reaction.
Handle CERAFURAN R-701 and CERAFURAN C-710 with proper care by using safety tools like chemical resistance hand gloves, safety goggles
Our Products
We offer a wide range of foundry products and services to meet the requirements of iron, steel and non-ferrous
foundries to help them to reduce defects, improve casting quality and optimise production costs.
