FOUNDRY MOULDING (moulding refractory materials in general
B 28 B)
Note
This subclass covers:
-
the making of moulds for casting metals or of other refractory moulds;
-
selection or preparation of materials therefor;
-
the necessary patterns, processes, machines, accessory devices or tools.
1
/
00
Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C 04 B 35/00
); Chemical or physical features in the formation or manufacture of moulds
1
/
02
•
characterised by additives for special purposes, e.g. indicators, breakdown additives
1
/
04
•
•
for protection of the casting, e.g. against decarbonisation
1
/
06
•
•
•
for casting extremely oxidisable metals
1
/
08
•
•
for decreasing shrinkage of the mould, e.g. for investment casting
1
/
10
•
•
for influencing the hardening tendency of the mould material (influencing the hardening tendency of the binding agent only B 22 C 1/16)
1
/
12
•
•
for manufacturing permanent moulds or cores
1
/
14
•
•
for separating the pattern from the mould
1
/
16
•
characterised by the use of binding agents; Mixtures of binding agents
1
/
18
•
•
of inorganic agents
1
/
20
•
•
of organic agents
1
/
22
•
•
•
of resins or rosins
1
/
24
•
•
•
of oily or fatty substances; of distillation residues therefrom
1
/
26
•
•
•
of carbohydrates; of distillation residues therefrom
3
/
00
Selection of compositions for coating the surfaces of moulds, cores, or patterns
3
/
02
•
specially adapted for vacuum-sealed moulding [6]
5
/
00
Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose (of general applicability, see the relevant places, e.g. for material with water-setting properties B 28 C)
5
/
02
•
Dressing by centrifuging essentially or additionally
5
/
04
•
by grinding, blending, mixing, kneading, or stirring
