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Annealing and Coating Line (ACL) for Silicon Steel Strip

Non-grain-oriented strip is annealed in a radiant tube furnace using a continuous process after cold rolling to ensure recrystallization and controlled grain growth. Top-quality steel requires strip temperatures above 1100°C and a very dry atmosphere with a high hydrogen content. This is followed by controlled cooling to obtain an extremely flat strip.
Key process to allow the Furnace atmosphere purity and reach the best magnetic and surface properties are the Cleaning Section and the coating and drying section.

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Overview

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

Non-grain-oriented strip is annealed in a radiant tube furnace using a continuous process after cold rolling to ensure recrystallization and controlled grain growth. Top-quality steel requires strip temperatures above 1100°C and a very dry atmosphere with a high hydrogen content. This is followed by controlled cooling to obtain an extremely flat strip.

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 to enhance the strip cleanliness and allowing to reduce of 20-25% the electrical consumption.

The next step is in-line coating with insulating varnishes of different qualities, through fully automatic roll coaters operating also in closed loop through the feedback of the in line coating gauge.

Then the varnish layer is dried and cured (or) hardened in a special drying furnace, which is generally fitted with a solvent post treatment system. The waste heat from the process is efficiently recovered and utilized for strip cleaning and drying.

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Related Solutions

Decarburizing and Coating Line (DCL) 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
CNC Heavy Duty Roll Grinding Machines for Flat Product Rolling Mills
PDT™ Pomini Digital Texturing™
Pomini Automatic Roll Loaders and Roll Shops
Pomini Roll Shop Ancillary Equipment

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
  • Talents
  • Suppliers
  • 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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  • Tenova on YouTube
  • Tenova on WeChat
  • Privacy policy
  • Legal Disclaimer & Company Information
  • Contact

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