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     • Heavy Machinery, Gravel Quarrying

     • Investment Casting Foundry

Agro Brno-Tuřany, a.s. > Non-agricultural Production > Investment Casting Foundry

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Investment Casting Foundry

Dvorecká 31, 620 00 Brno – Tuřany
Ing. Antonín Suchomel, Centre Manager
tel.: 545 219 445
tel./fax: 545 219 185
e-mail: str450@agro-turany.cz

The investment casting foundry has a capacity of 150 tons per year and produces custom-made casts weighing from 10 g to 12 kg, in batches of 100 to 200,000 pieces. We process casts from carbon steel, low and moderately alloyed steel, stainless steel, and also in part from non-ferrous materials such as brass. The quality of our production is guaranteed to be in compliance with ČSN 421251 and the OZN P 630 international standard. A certificate of the material's chemical composition is provided with the casts.

1) Production of wax models The wax model is manufactured by injecting wax in metal moulds.
2) Assembling (gluing) trees Manufactured wax models are glued and soldered with appropriate gating.
3) Manufacturing shells The shell is manufactured by dipping the wax tree in a ceramic slurry. After dripping, the tree is sprinkled with nonplastics of an appropriate grain size. The process is repeated about five times.
4) Smelting wax Smelting wax from the shell is done in an autoclave, where the wax substance is removed from the shell by the pressure of overheated vapour.
5) Annealing The purpose of annealing is to remove any traces of undesired substances, such as water and wax, from the ceramic shell, so as to ensure its required mechanical strength.
6) Melting and casting The required material is melted in induction ovens at a temperature of up to 1700?C. After conducting a chemical analysis, the molten metal is poured into the annealed shells.
7) Final stage of production The ceramic forming mixture is manually or mechanically removed from the cooled-down shell. Consequently, trees are blasted, and individual casts are separated from the gate stick. Grinding removes from the cast any remains of the gate, and is followed by common procedures for finishing the shape and surface.

Products:

Quality:

Table of size accuracy
Table of surface coarseness
Czech certificate
German certificate
English certificate

List of Materials

After agreement with the customer and under the given conditions, some other materials can also be cast, meeting specific requirements according to the cast's function.

Steels for carburization

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
12 014	max. 0,06	max. 0,45	max. 0,15				Al min. 0,020		1.1013	Ck 5
14 220	0,14 0,19	1,10 1,40	0,17 0,37	0,80 1,10					1.7131	GS-16MnCr 5
12 020	0,13 0,20	0,60 0,90	0,17 0,37	max. 0,25	max. 0,30	Cu max. 0,30			1.1141	Ck 15

Steels for heat treating

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
15 230	0,24 0,34	0,40 0,80	0,17 0,37	2,20 2,50			v 0,20			30CrV8
42 2650	0,28 0,38	0,40 0,80	0,20 0,50
1.7225	0,38 0,45	0,60 0,90	max. 0,40	0,90 1,20		0,15 0,30			1.7225	GS-42 CrMo4
42 2660	0,40 0,50	0,40 0,80	0,20 0,50						1.1191	GS-Ck 45
42 2819	0,45 0,55	0,60 0,90	0,60 0,90						1.1206	Ck 50
12 060	0,52 0,60	0,50 0,80	0,17 0,37	max. 0,25	max. 0,30	Cu max. 0,30			1.0535	C 55

Rustproof austenitic steels

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
42 2931	max. 0,15	0,50 1,20	0,50 1,20	18,00 21,00	8,00 11,0				1.4312	G-X10CrNi18-8
42 2942	max. 0,20	0,50 1,20	0,75 1,50	18,00 20,00	9,0 11,0	2,00 2,50			1.4410	G-X10CrNiMo18-9
1.4308	max. 0,07	max. 1,50	max. 1,50	18,00 20,00	8,00 11,0				1.4308	G-X5CrNi19-10
1.4408	max. 0,07	max. 1,50	max. 1,50	18,00 20,00	9,00 12,00	2,00 2,50			1.4408	G-X5CrNiMo19-11-2
1.4581	max. 0,07	max. 1,50	max. 1,50	18,00 20,00	9,00 12,0	2,00 2,50	Nb min.8x%C max. 1,8 %		1.4581	G-X5CrNiMoNb19-11-3

Rustproof ferritic-martensitic steels

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
42 2905	max. 0,15	0,30 0,70	0,30 0,70	12,00 14,00	max. 1,00				1.4006	G-X10Cr13
42 2906	0,15 0,30	max. 0,70	max. 0,70	12,00 14,00	max. 1,00				1.4027	G-X20Cr14

Tool steels

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
19572	1,55 1,75	0,20 0,40	0,25 0,40	11,0 12,0		0,50 0,70	0,10 0,50	0,40 0,60	1.2601	X165CrMoV12

Heat-resistant steels

Labelling	C	Mn	Si	Cr	Ni	Mo	V	W	WNr.	Abbreviation
42 2932	0,15 0,35	max. 1,50	1,00 2,00	17,00 20,00	8,00 11,00				1.4825	G-X25CrNiSi189
42 2952	0,30 0,45	0,50 1,20	0,75 1,50	24,00 27,00	20,00 22,00	max. 0,50			1.4848	G-X40CrNiSi2520
42 2955	0,30 0,50	max. 1,50	1,00 2,50	24,00 26,00	34,00 36,00				1.4857	GX40NiCrSi35-26

• Customized work (according to the customer's wishes)
                    - manufacturing moulds
                    - heat treatment
                    - mechanical and non-destructive tests of casts /RTG, capillary tests, ultrasound, etc./
                    - surface finishing of casts
                    - machining of casts
• Request for new production
                    - binding engineering drawing
                    - requested material
                    - requested production runs