THIELE round-link chains can be used on both face conveyors and stage loaders and are also suitable as traction elements for coal ploughs.
To ensure that its products can meet the tough demands of today’s mining industry THIELE has developed its own chain steels based on many years of manufacturing knowhow.
Each production stage is accompanied by careful and thorough quality control tests. THIELE chains are recognised the world over for their performance and durability.
This is why THD round-link steel chains are hardened and tempered to a strength of 345 – 375 HB10 (which applies uniformly over the entire link). For chains intended for face conveyors this strength level represents the optimum in terms of impact resistance (notch impact strength) and wear resistance (hardness).
Important for converting hardness measurements into tensile strength:
The strength specification of all THIELE chains is based on hardness measurements according to the Brinell scale. Converting hardness measurements into tensile strength [MPa] has until now been carried out using Table A1 in DIN EN ISO 18265. The new DIN 22252 / 22255 however has changed over to Table B2.
The quality grade and hardness specification for THIELE chains remains unchanged. Applying Table B2 produces a different set of tensile strengths from those of Table A1
- Can be used in conveyors, stage loaders and are also suitable as traction elements for coal ploughs
- THIELE has developed its own chain steels
- Strength applies uniformly over the entire link
- Optimum in terms of impact resistance (notch impact strength) and wear resistance (hardness)
