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Decarburizing and Coating Line (DCL) for Silicon Steel Strip

Cold rolled GO Si steel strip is annealed in a continuous process line for primary recrystallization and decarburization. After the steel strip has passed through the DCL furnace, it is coated with magnesium oxide and then dried. 

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Overview

Tenova, with its over 40 years of experience, is the only company with the competence and knowledge, of the entire multi-stage thermal process chain, which is required for the production of grain-oriented electrical steel strip.

The final cold rolled GO silicon steel strip needs to be annealed in a continuous process line for primary recrystallization and decarburization to a level below 30 ppm. The decarburization of the silicon steel strip is necessary to make the steel ageing-resistant, so that the magnetic properties are stable even after long term operation as transformer core material. Besides the high requirement on accurate and reliable temperature profiles during annealing, soaking and cooling the atmosphere control in the DCL is essential.The atmosphere control, mixing and humidification system is the part with the highest degree of complexity in this annealing furnace.

The Cleaning Section is a key process component to remove the residual Rolling oil and Iron Fines. This helps in minimizing the Furnace roll contamination and thus the frequency of pitting defect on the strip surface

The Tenova cleaning section is equipped with the special high efficiency electrolytic cleaning unit (HTMCD) properly combined with spray alkaline cleaning, high efficiency-quick maintenance brushing units ( brush to brush type) to enhance the strip cleanliness and allowing to reduce of 20-25% the electrical consumption.

The annealed strip coming from the Furnace is coated with a MgO slurry layer that is dried in a dedicated oven (generally a gas infrared type is used) and cooled before recoiling on Tension reel. This heat resistant MgO layer is will avoid coil wrap sticking in the following step of production cycle in batch annealing and also it will contribute to the formation of the insulation glass film on strip surface.

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Related Solutions

Annealing and Coating Line (ACL) for Silicon Steel Strip
HPH® Bell-Type Annealing Furnace for Silicon Steel Strip
Multi-Stack Bell-type Annealing Furnace (MBAF) for Silicon Steel Strip
Rotary Bell-Type Annealing Furnace (R-BAF) for Silicon Steel Strip
Flattening and Coating Line (FCL) for Silicon Steel Strip
Lamination Furnace (MLF) for Semi-Finished Silicon Steel Strip

Europe

Wolfgang Eggert

Wolfgang Eggert

General Manager Sales Heat Treatment of Steel Strip, 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

Choose your way
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  • Media
Choose your technologies
By Technologies
  • Iron & Steel Technologies
  • Aluminum Technologies
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By Metals & Materials
  • Iron & Steel
  • Aluminum
  • Boron
  • Copper
  • Ferro-Alloys
  • Lithium
  • Manganese
  • Nickel & Cobalt
  • Phosphate - PPA
  • Platinum Group Metals
  • Rare Earths
  • Rockwool
  • Silicon Metal
  • Titanium
  • Uranium
By Green solutions
  • Heat Recovery
  • Combustion Systems
  • Decarbonization
  • Recycling and By-Products
  • Hydrogen
  • Lithium Battery Recycling
  • Texturing
  • Tenova on Linkedin
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  • Privacy policy
  • Legal Disclaimer & Company Information
  • Contact

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