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Measurement Techniques and Testings

The company Reinhard Tweer GmbH is certified acc. to 9001:2015.
The following processes are possible for the analyses:

Full automatically spectrographic analysis

To insure the material quality each melting charge is analysed with an emission spectrometer for several times. Within short time the quantification of all essential iron companion incl. the micronutrients and gases takes place. All information are transfered in the data processing system automatically.

Determination of the mechanical characteristics

For determination the mechanical characteristics e.g. tensile strenght, yield strenght, elongation and impact value we have reliable equipment in the material testing.
The production of the samples is made at Reinhard Tweer GmbH directly.
The testing of low temperature notched specimen is possible up to -80°C.
The testing of the equipment and also the calibration is made by an external accredited testing institute yearly.

Measuring room

Two index arms with variable 360° links reach each measuring point at the components for determination of the metrical requirements. Also contact-free measuring by laserscan and the consequential reverse engineering is possible without any problems.

Radiographic examination

The 450 kV electron-beam tube penetrated by radiation the cast parts within short time. Fixed in a “3-axis-manipulator” the angles for testing will be positioned exactly also at bulky parts. The fully automatic processing brings this discipline of testing for reliable volume mistake identification down to a round figure.

Ultrasonic examination

In order to perform the requirements to identificate volume mistakes we have amongst others several modern ultrasonic test instruments. A wide choice of different search units protects the handling of all test functions.

Crack test

Unknowable surface defects – which are not visible with the naked eye – are detected reliable by magnetic powder crack testing at several working places. Big magnetic field generators and variable applicable pole contactors are protecting the test results also by complicated part geometry.

Certificates

BVC | DIN EN ISO 9001:2015 | Valid until 02.05.2025

BVQI-Iso9001eng

SLV | Ü mark | Valid until unlimited

Uezeichen

DVS | Weldability according to DIN EN 15085-2 | Valid until 11.06.2025

Zertifikat-EN-15085-2-CL1-eng

DVS | Weldability according to DIN EN ISO 3834-2 | Valid until 03.05.2023

SLV-DIN3834-2

TÜV | European Pressure Equipment Directive /TRD100/ADW0 | Valid until July 2023

TUEV-TRD100

TÜV | DIN EN ISO 50001:2018 | Valid until 01.04.2025

TUEV-Iso50001eng

BV | Shipbuilding Approval ESN/3350/1.A.O. | Valid until 14.10.2024

BV-ESN3350

DB | Production Qualification Steel Casting/Sphere Cast Iron | Valid until September 2023

DB-Stahl-Sphaero

DB | Ductile iron superstructure qualification | Valid until 21.10.2025

230208-HPQ-Urkunde-Reinhard-Tweer-GmbH

DB | Quality Capability Classification Q1 | Valid until - see commentary

DB-Q1

LRS | Factory Approval Cast Steel | Valid until 07.01.2023

LRS-GS

LRS | Factory Approval Ductile Iron | Valid until 07.01.2023

LRS-GGG

DNV | Factory Approval Ductile Iron | Valid until 30.06.2024

DNV-Sphaero1

DNV | Factory Approval Cast Steel | Valid until 30.06.2024

DNV-Stahl1

Once Tweer – Always Tweer

Tweer is a classic medium-sized family business.
The products of our foundry are at home all over the world.

Contact

Reinhard Tweer GmbH
Krackser Str. 191
D- 33689 Bielefeld – Sennestadt
rts@tweer.de
Phone: +49 5205 / 7501 -0

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