Family-owned foundry for aluminium and zinc permanent mould casting with CNC machining, heat treatment and surface technology
Metallgießerei Brückner Inh. Ina Schmidt
Zeulenroda-Triebes, DENew on Amplifa
About us
Metallgießerei Brückner is a family-run sole proprietorship founded in 1967 in Zeulenroda-Triebes (East Thuringia) and specialises in aluminium and zinc permanent mould casting. Using gravity casting and, since 2024, tilt permanent mould casting, the company produces castings in lot sizes of 50 to 5,000 pieces with gross weights of up to 10 kg; with the Kurtz Ersa tilt casting machine, piece weights above 10 kg are also possible. Nine aluminium alloys according to DIN 1706 (including AlSi8Cu3, AlSi12, AlSi7Mg0,3) as well as ZAMAK (ZnAl4Cu1) are cast. Value creation takes place largely in-house: melting operation with nine induction crucible furnaces and two pre-melting furnaces, fettling, CNC and conventional machining, heat treatment (T6, T64, stress-relief annealing, soft annealing), blasting with stainless steel grit, sand and dry ice blasting as well as assembly. Main customers come from general mechanical engineering, the electrical industry, automotive engineering and the furniture industry. Quality assurance is carried out with 3D production measuring systems (KEYENCE XM 5000, VL 800), X-ray inspection, tensile tests and 3.1 inspection certificates according to DIN EN ISO 9001:2015.
- Site
- Zeulenroda-Triebes
- Processes
- Gravity permanent mould casting, Tilt permanent mould casting, Zinc permanent mould casting (ZAMAK, gravity casting), CNC machining (turning and milling), Conventional machining, Fettling (removal of casting seams and flash), Assembly (screws, nuts ...), Casting-in of insert parts (nuts, bolts, HeliCoil)
- Materials
- AlSi8Cu3, AlSi12, AlSi12(Cu), AlSi10Mg(Cu), AlSi10Mg, AlSi7Mg0,3, AlZn10Si8Mg, AlMg5
- Certificates
- DIN EN ISO 9001:2015, ISO 9001
- Founded
- 1967
- Industries
- General mechanical engineering, Electrical industry, Automotive industry, Furniture industry
- 01
3D design and casting simulation (mould making with partner companies)
- 02
Melting (induction crucible furnaces, pre-melting furnaces)
- 03
Permanent mould casting (gravity or tilt casting, cast-in inserts)
- 04
Fettling
- 05
Heat treatment
- 06
CNC or conventional machining
- 07
Blasting/surface treatment
- 08
Assembly
- 09
Quality assurance (3D measurement, X-ray)
Sites
Zeulenroda-Triebes
DEProduction and administration
- Part weight / size
- up to 10 kg gross weight, over 10 kg with tilt casting
- Lot size
- 50–5,000 pieces
- Materials
- Aluminium (DIN 1706), ZAMAK (ZnAl4Cu1)
- 9 induction crucible furnaces (80/150 kg)
- 2 pre-melting furnaces (bath furnaces)
- Permanent mould casting machines (hydraulic/manual)
- Tilt casting machine Kurtz Ersa (2024)
- CNC turning and milling machines
- Milling machine SPINNER (2025)
- Blasting system for stainless steel grit
- Dry ice blasting unit
- Heat treatment system (circulating air chamber furnace with water bath)
- 3D production measuring system KEYENCE XM 5000
- 3D measuring scanner KEYENCE VL 800
Castings
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Gravity permanent mould castingCasting | – | – | 10 kg | 50 – 5,000 pieces | AlSi8Cu3, AlSi12, AlSi12(Cu), AlSi10Mg(Cu), AlSi10Mg, AlSi7Mg0,3, AlZn10Si8Mg, AlMg5, ZnAl4Cu1 (ZAMAK) |
| Tilt permanent mould castingCasting | – | – | over 10 kg | – | AlSi8Cu3, AlSi12, AlSi12(Cu), AlSi10Mg(Cu), AlSi10Mg, AlSi7Mg0,3, AlZn10Si8Mg, AlMg5, ZnAl4Cu1 (ZAMAK) |
| Zinc permanent mould casting (ZAMAK, gravity casting)Casting | – | – | – | 50 – 2,000 pcs. | ZnAl4Cu1 (ZAMAK) |
| CNC machining (turning and milling)Machining | – | – | – | – | – |
| Conventional machiningMachining | – | – | – | – | – |
| Fettling (removal of casting seams and flash)Machining | – | – | – | – | – |
| Assembly (screws, nuts ...)Assembly | – | – | – | – | – |
| Casting-in of insert parts (nuts, bolts, HeliCoil)Joining | – | – | – | – | – |
| Heat treatment: solution heat treated (T6), partially heat treated (T64), stress-relief annealing,Heat treatment | – | – | – | – | AlCu types, AlSiMg types, AlZnMg types |
| Surface treatment: blasting with stainless steel gritSurface | – | – | – | – | – |
| Sand blastingSurface | – | – | – | – | – |
| Dry ice blasting (stationary)Surface | – | – | – | – | – |
| Vibratory finishingSurface | – | – | – | – | – |
| Mould making (3D design, 3D simulation, optimisation, with partner companies)Engineering | – | – | – | – | – |
| Quality assurance: 3D measurement, X-ray inspection, 3.1 inspection certificate, tensile testTesting | – | – | – | – | – |
12 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Permanent mould casting machine (hydraulic/manual) | – | – | – | – | Zeulenroda-Triebes |
| Tilt casting machine | Kurtz Ersa | 1 | – | 2024 | Zeulenroda-Triebes |
| Induction crucible furnace | – | 9 | Capacity 80 or 150 kg | – | Zeulenroda-Triebes |
| Pre-melting furnace (bath furnace) | – | 2 | – | – | Zeulenroda-Triebes |
| Impeller (melt cleaning) | – | – | – | – | Zeulenroda-Triebes |
| CNC machines (turning/milling) | – | – | – | – | Zeulenroda-Triebes |
| Milling machine | SPINNER Werkzeugmaschinenfabrik GmbH | 1 | – | 2025 | Zeulenroda-Triebes |
| Blasting system (stainless steel grit) | – | 1 | – | 2013 | Zeulenroda-Triebes |
| Dry ice blasting unit | – | 1 | – | 2020 | Zeulenroda-Triebes |
| Heat treatment system (circulating air chamber furnace with water bath quenching) | – | 1 | – | 2020 | Zeulenroda-Triebes |
| 3D production measuring system | KEYENCE XM 5000 | 1 | – | – | Zeulenroda-Triebes |
| 3D measuring scanner | KEYENCE VL 800 | 1 | – | 2020 | Zeulenroda-Triebes |
Additional services
Quality
Quality assurance is carried out in-house with the KEYENCE XM 5000 3D production measuring system and the VL 800 3D measuring scanner for dimensional inspection, including of complex components. In addition, X-ray inspection, tensile tests and 3.1 inspection certificates are offered.
| Evidence | Zeulenroda-Triebes |
|---|---|
| ISO 9001 |
History
- 1967
Foundry founded by Heinz and Ursula Brückner in the town centre of Zeulenroda
- 1993
Relocation to a new industrial hall building in the industrial estate of Zeulenroda-Triebes
- 2002
New hall built for machining and CNC equipment
- 2013
Acquisition of a blasting system (blasting with stainless steel grit instead of vibratory finishing)
- 2018
Management taken over by Ina Schmidt (2nd generation)
- 2020
Investments in in-house heat treatment, a dry ice blasting unit and a 3D measuring machine
- 2024
Acquisition of a tilt casting machine (Kurtz Ersa), expansion of the process portfolio
- 2025
Investment in a new milling machine from SPINNER for the machining department