Manufacturer of technical plastic injection-molded parts with in-house mold and tool making as well as precision parts manufacturing
HKM Kunststoffverarbeitung GmbH
Ebersbach-Neugersdorf (main site) · Neusalza-Spremberg (founding site, formerly mold making)New on Amplifa
An owner-managed family business from Upper Lusatia
HKM Kunststoffverarbeitung GmbH is an owner-managed, medium-sized family business from Ebersbach-Neugersdorf in Saxony. The company manufactures technical plastic parts using the injection molding process from thermoplastic materials with part weights of up to 800 grams. A special feature is the in-house, technology-strong mold and tool making operation, in which injection molds made of metal with up to two components (2K) are designed and manufactured in-house. In addition, HKM offers precision parts manufacturing with milling (3-axis and 5-axis), turning, EDM, laser welding and laser engraving for contract workpieces made of metal and plastic. Customers come primarily from the office furniture, vehicle electronics, mechanical and plant engineering, adhesive technology and standard parts industries. The main site offers over 5,000 m² of production space as well as a climate-controlled measuring laboratory; customers in Europe and the USA are supplied. Since 2023, the company has been producing with sustainably generated solar power.
- Site
- Ebersbach-Neugersdorf
- Processes
- Plastic injection molding, 3D printing (additive, for very small quantities), CNC milling of plastic semi-finished products, 3-axis milling, 5-axis milling (sequential), 5-axis milling (simultaneous), Dry machining of graphite, Plastic machining (milling)
- Materials
- Thermoplastics, Plastics, Stainless steels, Structural and stainless steels, hardened steels / hardened materials, Special alloys, Aluminum, Brass and copper alloys
- Certificates
- Annual certification of the QM system
- Founded
- 1991
- Industries
- Office furniture, Vehicle electronics, Mechanical and plant engineering, Adhesive technology, Standard parts
- 01
Design of the injection mold (mold making)
- 02
Mold and tool making (milling, turning, EDM, laser welding)
- 03
Injection molding of the plastic parts
- 04
Post-processing/assembly
- 05
Quality inspection in the measuring laboratory
Materials and processes
Injection molding
Manufacture of technical plastic parts from thermoplastics with part weights up to 800 g, from approx. 1,000 pieces.
Injection molds up to 2 components
Molds designed and manufactured in the in-house mold and tool making operation, also for multi-component parts.
Milling (3-axis, 5-axis sequential/simultaneous)
Milled parts as one-offs or small series from metal and plastic, including dry machining of graphite.
Turning
Turned parts from metals and plastics up to Ø 250 mm and workpiece lengths up to 1,250 mm.
EDM (sinker EDM, wire EDM, start-hole drilling)
Thermal removal process for electrically conductive metals of any hardness, among other things for injection molds.
Laser welding
Precise repair of injection molds and contract welding work with low distortion.
Laser engraving
Permanent marking of metals, plastics and graphite electrodes up to 300 x 300 mm, camera-based alignment.
Surface treatment
Hardening, browning, phosphating, chrome plating, anodizing as well as painting and powder coating in cooperation with local service providers.
3D printing
Additive manufacturing for very small quantities prior to the start of series production.
Sites
Ebersbach-Neugersdorf
DEMain site: production, mold and tool making, administration
- Part weight / size
- Injection-molded parts up to 800 g
- Lot size
- One-offs to large series (injection molding from approx. 1,000 pcs.)
- Materials
- Thermoplastics, tool steel, stainless steels, aluminum, brass and copper alloys, plastics, graphite
- Injection molding machines
- 5-axis simultaneous milling machine Fehlmann Versa 825 with tool magazine (218 tools) and pallet changer (6 tool pallets)
- Lathes
- EDM machines (sinker EDM, wire EDM, start-hole drilling)
- Laser welding system
- camera-based laser engraving machine with computer-controlled rotary axis
- optical and tactile measuring machines in the climate-controlled measuring laboratory
- High-bay warehouse (1,450 pallet positions)
Manufactured components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Plastic injection moldingPlastics | – | – | 800 g | approx. 1,000 pcs | Thermoplastics |
| 3D printing (additive, for very small quantities)Additive | – | – | – | – | Plastics |
| CNC milling of plastic semi-finished productsMachining | – | – | – | – | Plastics |
| 3-axis millingMachining | – | – | – | – | Stainless steels, Aluminum, Brass and copper alloys, Plastics, Graphite, hardened materials and special alloys |
| 5-axis milling (sequential)Machining | – | – | – | – | Stainless steels, Aluminum, Brass and copper alloys, Plastics, Graphite, hardened materials and special alloys |
| 5-axis milling (simultaneous)Machining | – | – | – | – | Stainless steels, Aluminum, Brass and copper alloys, Plastics, Graphite, hardened materials and special alloys |
| Dry machining of graphiteMachining | – | – | – | – | Graphite |
| Plastic machining (milling)Machining | – | – | – | – | Plastics |
| TurningMachining | – | 1,250 mm × Diameter up to 250 mm | – | – | Metals, Plastics |
| Sinker EDMMachining | – | – | – | – | electrically conductive metals of any hardness, graphite electrodes |
| Wire EDMMachining | – | – | – | – | electrically conductive metals of any hardness |
| Start-hole drilling (EDM)Machining | – | – | – | – | electrically conductive metals of any hardness |
| Laser welding (repair and contract welding work)Joining | – | – | – | – | Structural and stainless steels, Aluminum, hardened steels, Brass and copper alloys |
| Laser engravingSurface | a few hundredths of a millimeter (camera-based alignment) | 300 mm × 300 mm | – | – | Metals, Plastics, Graphite electrodes |
| HardeningHeat treatment | – | – | – | – | – |
| BrowningSurface | – | – | – | – | – |
| PhosphatingSurface | – | – | – | – | – |
| Chrome platingSurface | – | – | – | – | – |
| AnodizingSurface | – | – | – | – | Aluminum |
| Painting and powder coatingSurface | – | – | – | – | – |
| Mold and tool making (design and manufacture of injection molds with up to 2Engineering | – | – | – | – | Metal, Tool steel |
| Measurement (optical and tactile) in the climate-controlled measuring laboratoryTesting | ±0.002 mm | – | – | – | – |
| Assembly / post-processing of plastic partsAssembly | – | – | – | – | Plastics |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis simultaneous milling machine | Fehlmann AG Versa 825 | – | – | – | Ebersbach-Neugersdorf |
| Tool magazine | Fehlmann AG | – | Capacity 218 tools | – | Ebersbach-Neugersdorf |
| automatic tool pallet changer | Fehlmann AG | – | 6 tool pallets | – | Ebersbach-Neugersdorf |
| Injection molding machines | – | – | – | – | Ebersbach-Neugersdorf |
| Laser welding system | – | – | – | – | Ebersbach-Neugersdorf |
| Laser engraving machine (camera-based, with computer-controlled rotary axis) | – | – | Parts up to 300 x 300 mm | – | Ebersbach-Neugersdorf |
| optical and tactile measuring machines | – | – | – | – | Ebersbach-Neugersdorf (climate-controlled measuring laboratory) |
| Metalworking machines (milling, turning and EDM machines in mold and tool making) | – | – | – | – | Ebersbach-Neugersdorf |
Additional services
Quality
The functionality of the quality management system is verified annually through certification and customer audits. In the climate-controlled measuring laboratory, measurements accurate to ±0.002 mm are performed with optical and tactile measuring machines.
| Evidence | Ebersbach-Neugersdorf |
|---|---|
| Annual certification of the QM system |
History
- 1991
Founded on 26.03.1991 by three academics (Hempel, Köpp, Marschner) in Neusalza-Spremberg; the company name HKM is derived from the surnames. Production initially on used injection molding machines, molds manufactured by third parties.
- 1998
Klaus Hempel becomes sole owner after the other partners leave; his children Uta and Maik join the company.
- 2002
Second site in Ebersbach-Neugersdorf: relocation of plastic parts production, establishment of an in-house mold and tool making operation at the founding site.
- 2007
Death of the founder Klaus Hempel; succession by his children Maik Hempel and Uta Sachse (second generation).
- 2009
The financial crisis is mastered by the second generation.
- 2012
Growth and modernization: investments in new machines, new website, new ERP system and new company logo.
- 2016
25th anniversary; managing director Uta Sachse leaves the company for health reasons, Maik Hempel takes over responsibility.
- 2018
Groundbreaking ceremony for the expansion at the Ebersbach-Neugersdorf site.
- 2019
Construction of three production halls and an office complex; production area grows to over 5,000 m², high-bay warehouse with 1,450 pallet positions; the mold and tool making operation moves to Neugersdorf.
- 2023
Production with sustainably generated electricity (solar power).