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Bell-type Annealing Furnace for Wire Rod

Tenova LOI Thermprocess is a world’s leading company in the field of Bell-type Annealing plants for wire rods in top quality. 

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Overview

The "High Performance Hydrogen®" Bell-type Annealing Plants have been developed for the heat treatment of high-quality steel wires that are used mainly for the manufacturing of complex cold extruded parts, nuts and bolts and other fastening systems. The appropriate microstructure is of essential importance for the following cold forming process of steel wires. The use of hydrogen as protective gas provides cleanest wire surfaces, a homogeneous microstructure and uniform mechanical properties. 

Due to an optimized recirculation of the protective gas, Tenova LOI Thermprocess achieves the desired uniformity of the annealing temperature within the entire charge. After the fast heating-up to the desired annealing temperature (holding time), the temperature is reduced in the metallurgically required, controlled slow cooling process. Cooling down after the heating phase is carried out with a patented jet-cooling hood. Compared with conventional cooling hoods, its cooling performance is significantly more intensive. Moreover, it requires considerably less electrical energy than a conventional cooling hood. Thanks to its low-noise operation, no particular noise-protection measures need to be taken. 

The HPH® Bell-type Annealing Plants offer a high degree of flexibility: while hydrogen is used as a protective gas for the annealing of pre-drawn or drawn wire, nitrogen is usually used for the spheroidizing annealing of wire rod. Any protective gas mixtures between 100 percent nitrogen and 100 percent hydrogen can be used since every annealing base disposes of its own separate valve stand for the protective gas supply. Consequently, annealing cycles can be implemented with that hydrogen percentage needed to meet process requirements and/or economic aspects. 

Safety is of utmost importance for working with hydrogen atmospheres: precise flow measurement, continuous pressure monitoring, oxygen probes, redundant safety technology and double solenoid valves upstream every burner are just a few equipment features. Furthermore, Tenova LOI Thermprocess is the first manufacturer using fail-safe Siemens PLC control systems. 

Tenova LOI Thermprocess focuses on robustness in the design of annealing bases: they are made of heat-resistant casting in the diffuser area and have a far longer service life than welded constructions: plant lifetimes of far more than 20 years are no exception, but quite usual. 

The high-performance impellers – a proprietary design – are specially designed for high circulation performance and low dead weight.

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Related Solutions

HPH® Bell-Type Annealing Furnace for Silicon Steel Strip

Europe

Malte Fliess

Malte Fliess

General Manager Sales Bell-type Annealing Furnaces, Tenova LOI Thermprocess

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India

Prasanta Saha

Prasanta Saha

Director Sales, Tenova Technologies Pvt. Ltd.

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China

Peizhong Wang

Peizhong Wang

Director of Sales Tenova LOI Thermprocess, Tenova Technologies (Tianjin)

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Americas

Tom Walsh

Tom Walsh

Vice President Sales and Technology, Tenova Inc.

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RoW

Sascha Bothen

Sascha Bothen

Senior Vice President Sales & Marketing, Tenova LOI Thermprocess

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Modernization, Service & Spare Parts

Marc Reynaert

Marc Reynaert

Head of Revamp & Modernization, Tenova LOI Thermprocess

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Tenova

Tenova is your worldwide partner for sustainable, innovative and reliable solutions in the metals and the mining industries.

From hydrometallurgy and pyrometallurgy to material handling, DRI to EAF, reheating furnaces to heat treatment furnaces, cold rolling mills to processing lines, roll grinders and texturing, our technologies minimize the environmental impact of your activities, operations, and final products.

 

Tenova S.p.A. Via Gerenzano, 58 - 21053 Castellanza - Italy

V.A.T. IT 04651530968.
REA 04651530968.
Share Capital € 18.443.700

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Tenova

Tenova is your worldwide partner for sustainable, innovative and reliable solutions in the metals and the mining industries.

From hydrometallurgy and pyrometallurgy to material handling, DRI to EAF, reheating furnaces to heat treatment furnaces, cold rolling mills to processing lines, roll grinders and texturing, our technologies minimize the environmental impact of your activities, operations, and final products.

 

Tenova S.p.A. Via Gerenzano, 58 - 21053 Castellanza - Italy

V.A.T. IT 04651530968.
REA 04651530968.
Share Capital € 18.443.700

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