Silicone For Casting
About silicone for casting
The METACONCEPT Group, a specialist in the manufacture of tin-based alloys for the production of parts via centrifugal processes for use in the jewellery and silverware industries, has joined forces with NICEM (Italy), the leading European manufacturer of centrifugal casting equipment and elastomers for these applications.
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Presentation
Characteristics
Applications
Implantation
Precautions of use
We can offer a range of unique services to our clients:
- We offer the best alloys on the market (lead-free alloys with a maximum of 50 ppm). Please refer to our arts and crafts alloy datasheet.
- We distribute a range of very high quality elastomers which are equally suitable for the creation of tin, zamak or polyester resin parts.
- We supply our clients with all the accessories necessary for the creation and preparation of moulds, such as talc, centring pins, ladles and gouges.
- We keep our clients informed of the latest centrifugal casting lines produced by NICEM and offer them equipment tailored to their needs.
The METACONCEPT Group also boasts a technical laboratory (with a full centrifugal line) where it offers training in the creation of silicone moulds.
Below you will find details of our silicone product lines + accessories. We can supply specific commercial and technical datasheets for all our centrifugal casting and mechanical polishing equipment (mass finishing).
We also offer organic silicones and rubbers for the creation of moulds for lost wax casting..
|
Designation
|
Shores hardness / Hardness
|
% shrinkage
|
Type of production
|
Mechanical properties
|
Resistance to temp.
|
Pressure – Vulcanisation (bars)
|
|---|---|---|---|---|---|---|
|
Silicone disc
Black Jack |
58 / 60
|
2.0
|
Parts with large
undercuts |
Average malleability when raw, very high tensile strength, good flexibility
|
High
|
150
|
|
Silicone disc
White B70 |
68 / 70
|
2.0
|
Parts with small
undercuts |
Poor malleability when raw, average tensile strength, average flexibility
|
Higth
|
110 – 130
|
|
Silicone disc
Light blue BA 65 HT |
65 / 67
|
2.3
|
Parts with medium
underctus |
High malleability when raw, very high tensile strength, very good flexibility
|
Very high
|
110 – 130
|
|
Silicone disc
Dark blue SB55HT |
55
|
2.3
|
Parts with a very
large undercut |
Average malleability when raw, very high tensile strength, very good flexibility
|
Higth
|
110 – 130
|
|
Silicone disc
Yellow G55 |
58 / 60
|
2.3
|
Parts with large
undercuts |
High malleability when raw, very high tensile strength, very good flexibility
|
Medium
|
110 – 130
|
|
Silicone disc
white SB55 (with additive) |
53 / 55
|
2.0
|
Parts with medium
undercuts |
Average malleability when raw, average tensile strength, average flexibility
|
Medium
|
110 – 130
|
|
Silicone disc
Green SB50HT |
49 / 51
|
2.0
|
Parts with a very
large undercut |
High malleability when raw, very high tensile strength, very good flexibility
|
Hight
|
110 – 130
|
|
Bi-composite silicone
HT33 A – with HT33B |
NC
|
NC
|
All types of parts for
gravity casting |
Cold silicone for the creation of moulds used for manual casting
|
Medium
|
N/A
|
|
Silicone block
A32 – Orange bloc 2 k |
32
|
0.8
|
Used for inserts
|
High malleability when raw, very high tensile strength, very good flexibility
|
Higth
|
110 – 130
|
Vulcanisation time: 2 mm per mm of thickness (minimum duration 1 hour)
Vulcanisation temperature: 180°
|
Designation
|
Shores / Hardness
|
Shrinkage in %
|
Type of production
|
Mechanical properties
|
Resistance
to temp. |
Specific
pressure on the rubber |
|---|---|---|---|---|---|---|
|
Silicone disc Green SB 50 / 99
|
50 / 52
|
0.50
|
Duplication of plastic, wood resin and wax models
|
Average malleability when raw, very high tensile strength, very good flexibility
|
Hight
|
50 – 60
|
|
Silicone plate antique Rose
|
50 / 53
|
0.35
|
Wax injection for lost wax casting
|
High malleability when raw, very high tensile strength, very good flexibility
|
Hight
|
110 – 130
|
Vulcanisation time: 2 mm per mm of thickness (minimum duration 1 hour)
Vulcanisation temperature: 82°C to 100°C
Storage period:12 months in dry conditions away from direct sunlight.
These tables show the most commonly used silicones in the area of centrifugal casting:
Have you defined the type of application? Contact us.Our technical staff will be happy to assist you in choosing the most suitable silicones.
ACCESSORIES FOR SILICONES
|
Name
|
Use
|
Special characteristics
|
|---|---|---|
|
Mould boxes
|
For the preparation and vulcanisation of silicone moulds
|
Available in diameters of 230 mm to 700 mm and 3 heights.
|
|
Centring pin
|
For the positioning and centring of 2 silicone discs
|
In square or conical form and in heights of 13 mm or 17 mm.
|
|
Sleeves and cutter blades
|
For the preparation of mould feeding channels
|
Several sizes available
|
|
Sleeves and gouges
|
For the preparation of mould feeding channels
|
Several sizes available There is a pocket with the 4 most frequently used instruments for preparing the mould.
|
|
Talc
|
Prevents sticking when casting the metal in the silicone mould
|
Talc with a neutral Ph and a specific granulometry of 2.5% at 5μ. This talc contains no silicone, Do not use talc bought from a pharmacy as this may contaminate the silicone.
|
|
Silicone wire
|
Used as a flexible insert inside the 2 silicone discs
|
Several diameters available
|
|
Teflon wire
|
Used as a rigid insert inside the 2 silicone discs
|
Several diameters available
|
|
Ladles
|
For pouring the molten metal into the centrifuge
|
Stainless steel, 5 sizes available
|
|
Buffers FIPA
|
For the manual buffing of parts manufactured via centrifugal processes
|
Available in 180 g – 220 g – 400 g – 600 g and diameters of 20 x 160 mm or 10 x 120 mm.
|
| Name | Use | Special characteristics |
|---|---|---|
| Silicone disc Black Jack | Tin and polyester resin | Available in Ø 230 mm, 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc White B65 | Tin | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc White B70 | Tin and zamak | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Light blue BA 65 HT | Tin and zamak | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Dark Blue SB55HT | Tin | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Fuchsia A 50 | Tin and resin for lost wax casting | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Pink RA70HT | Tin and zamak | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Yellow G55 | Tin | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc White SB55 (with additive) |
Polyester resin | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Silicone disc Green SB50HT | Tin, zamak and polyester resin | Available in Ø 230 mm – 300 mm and 400 mm and thicknesses of 5 mm – 10 mm – 15 mm |
| Transparent silicone HT33 A with HT33 B | Tin and polyester resin | Used for very small production quantities |
| Silicone block A32 | Tin and polyester resin | Available in 2 kg blocks |
| Silicone disc Green SB 50 / 99 | Tin | Available in Ø 230 mm – 300 mm and thicknesses of 5 mm – 10 mm |
| Silicone disc Antique rose | Tin and resin for lost wax casting | Plate of 300 x 300 x 6.35 mm |
Silicones with a diameter of 400 mm or more are generally ordered specifically by the client.
b>The product safety information sheet below is available upon request from the METACONCEPT Group.
The implementation process is specific to the chosen medium (metal or polyester resin) and the characteristics of the part being produced. The METACONCEPT Group’s technical department will advise you on which silicone to choose and the appropriate implementation procedure.
To prevent burns caused by the molten metal, it is advisable to wear a protective apron, shoes, gloves, helmet and glasses.
– Do not smoke at the workstation.
– The workstation must be well ventilated.
– Wash your hands when leaving the workstation.
COMMENTS :
Always use a flux suited to the intended use.
Contact our technical department to ascertain which product is most suited to your application.All of the information contained in this document is provided for informational purposes only and the METACONCEPT Group will not be held liable for it.
Other metaconcept products
Zamak
Soldering Sticks
