
Repair of fill chambers and cylindrical components, as well as laser welding and precision honing

Weier GmbH
57489 DrolshagenNew on Amplifa
About Weier GmbH
Weier GmbH, based in Drolshagen, has specialized in the maintenance and repair of defective or worn cylindrical components since 1992. The core service is the specialized process for restoring fill chambers (Shot Sleeves), offered since 1994. This is primarily used in the aluminum and magnesium die-casting industry and is a standard for many renowned companies. The repair is considered a cost-effective, fast, and ecological alternative to new purchases, as it conserves resources and reduces CO2 emissions. The range of services also includes precision laser welding for intricate repairs on tools and workpieces, contract honing for diameters from 70 to 600 mm and lengths up to 6 m, as well as machining in turning, milling, and drilling. With 7-axis welding robots, a modern machine park, complete logistics including pickup and return transport, and an EXPRESS service, Weier GmbH serves foundries, vehicle construction, the steel industry, power generation, and mechanical and plant engineering.
- Site
- Drolshagen
- Processes
- Fill chamber maintenance / Shot sleeve reconditioning, Reconditioning of cylindrical components (Repair of cylindrical components, e.g., fill chambers,, Laser welding / Laser welding, Honing / Precision honing (Contract honing, coaxial honing, rough honing, finished, Turning, Milling, Drilling, Welding
- Materials
- Steel, Silver, Aluminum, Copper, Copper alloys, Titanium, Brass, Bronze
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, ISO 9001, ISO 14001, 100% Traceability, Material testing by independent laboratories, Supplier and customer audits
- Founded
- 1992
- Industries
- Foundries (Aluminum and Magnesium Die-casting), Vehicle Construction (Automotive, Aerospace, Crane, Shipbuilding), Steel Industry (Blacksmithing Technology, Steel Production, Rolling Mills), Power Generation (Power Plants, Wind Power, Offshore, Hydropower), Plant Engineering & Mechanical Engineering, Mining Technology
- 01
Component pickup from the customer (Logistics incl. EXPRESS)
- 02
Disposition and order processing (ERP system)
- 03
Maintenance or repair (Fill chamber process, laser welding, machining)
- 04
Honing or precision machining
- 05
Quality control (Incoming and outgoing inspection, material testing)
- 06
Return transport to the customer
Location

Drolshagen
DEHeadquarters / Production
- Materials
- Steel, Aluminum, Copper, Titanium, Casting materials, Brass, Bronze, Ceramics
- 7-axis welding robots
- Honing machines (Ø 70–600 mm, Length up to 6 m)
- Turning
- Milling
- Drilling
- ERP System
- DocuWare Document Management
Components



Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Fill chamber maintenance / Shot sleeve reconditioningSurface | – | – | – | – | Steel |
| Reconditioning of cylindrical components (Repair of cylindrical components, e.g., fill chambers,Surface | – | – | – | – | – |
| Laser welding / Laser weldingJoining | – | – | – | – | Steel, Silver, Aluminum, Copper & copper alloys, Titanium, all weldable metals |
| Honing / Precision honing (Contract honing, coaxial honing, rough honing, finishedMachining | – | 6 m × Ø 70–600 mm | – | – | Aluminum, Brass, Bronze, Tool steel, Casting materials, Ceramics, Chromium, Glass |
| TurningMachining | – | – | – | – | – |
| MillingMachining | – | – | – | – | – |
| DrillingMachining | – | – | – | – | – |
| WeldingJoining | – | – | – | – | – |
| Material testing by independent laboratoriesTesting | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 7-axis welding robots | – | – | – | 2008 | Drolshagen |
| Honing machines | – | – | Ø 70–600 mm, Length up to 6 m | – | Drolshagen |
Additional services
Reference customers
Quality & Certificates
Production is subject to a quality and safety management system with 100% traceability, strict goods and outgoing inspection, and material testing by independent laboratories. Certified according to DIN EN ISO 9001:2015 (Intertek, valid until 21.05.2027) and DIN EN ISO 14001:2015.
| Evidence | Drolshagen |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| 100% Traceability | |
| Material testing by independent laboratories | |
| Supplier and customer audits |
History
- 1992
Founding of H+W Metallverarbeitung GmbH through the acquisition of the ironware factory of Klaus Hilleke by Karl Huperz and Ludger Weier.
- 1994
Introduction of the fill chamber maintenance process.
- 1997
Comprehensive expansion and partial automation of the machine park.
- 2001
Separation of business partners, renaming to Weier Verbindungstechnik GmbH, sole management by Ludger Weier.
- 2002
Restructuring towards safety-critical fasteners, especially for wind energy.
- 2003
First certification according to DIN EN ISO 9001:2000.
- 2004
First exhibition stand at Euroguss in Nuremberg introducing the fill chamber process.
- 2005
Successful audit by ENERCON GmbH.
- 2006
Planning of the location change from Lennestadt to Drolshagen; conclusion of contract with the first foreign sales partner.
- 2007
Move to Drolshagen after six months of construction; renaming to Weier GmbH.
- 2008
Use of 7-axis welding robots in fill chamber maintenance.
- 2009
Positive outcome of the economic crisis through targeted marketing and trade fair appearances.
- 2011
First exhibition stand in the fastener sector at the Fastener Fair in Stuttgart.
- 2012
Construction of a 1300 m² hall for screw production.
- 2015
Introduction of an ERP system for process control.
- 2019
Discontinuation of fastener production; expansion of maintenance and laser welding.
- 2020
Introduction of the digital document management system DocuWare.