continuous annealing and hardening:

Continuous hardening furnaces, gas- or electrically heated with oil quenching bath, belt furnaces for annealing magnetic parts under pure hydrogen with flamefree outlet, all with extensive security features, online atmosphere control, touch-panel and optional database implementation. A new heat treatment line for aluminium sintered parts (T6 process) under controlled atmosphere was recently installed.

Heat treating furnaces for aviation and automotive applications, AMS-2750D specification:


AMS Revision D allows for several classes of equipment. The class 1 equipment calls for a temp- erature uniformity requirement of ±5°F. There are also specifications for calibrated thermocouples and standard instrument accuracy. Class 2 requires ±10°F and same system requirements. 


Class A instrumentation calls for each zone to have an independent control thermocouple. Each zone must be recorded by a recording instrument. Two additional recording sensors in each control zone located to best represent the hot and cold points in the oven based on the most recent survey. L&L accommodates this by having one thermocouple port located at each corner of the oven. 

Furnaces for sinter- hardeningcarbon and aluminum sintering, sintering and debinding of hollow sphere and ceramic structures, annealing of magnetic parts under 100% H2atmosphere even drying and debindering (MIM metal injection moulding), post-burning chambers (TNV), protective-gas generators and gas burners in various sizes are "taylor-made" solutions by SARNES ingenieure GmbH&Co KG in Stutensee, Germany.
Our furnace size ranges from 100mm belt width labratory type up to 1000mm and 2 x 600mm twin-belt furnaces with a capacity of more than 22 tons output per day. Controlled atmosphere with in-built endo-thermic generator, improved delube zone LED3 (US patent), quench cooling zone are availble for sintering powder metal parts. A complete sintering and anneling line forsintering aluminium parts (T6) as well as sintering solution for special applications (hollow spere structures) and sintering of carbon parts can be offered.

Industriestrasse 10

76297 Stutensee


T: +49 7249 951708

SARNES ingenieure

GmbH & Co KG

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