New Generation Steel Strip Continuous Annealing

Hot Dip Galvanizing (Aluminizing) Technology --- JJRS-Sendzimir

After cold rolling, the highly worked non-grain-oriented electrical steel strip (NGO) is recrystallized in a horizontal continuous furnace and the grain size is adjusted by secondary recrystallization. A thin layer of insulating lacquer is then applied in-line with a roller coater, in order to reduce eddy current losses in the electrical motor and prevent corrosion. The process steps for this phase of production are as follows:

Multi-stage strip cleaning
Rapid strip heating in the heating up section of the continuous furnace (optionally with rapid heating systems up to 500 K/s)
Option: decarburization to prevent magnetic aging
Annealing for recrystallization and discontinuous grain growth in process atmosphere
Controlled cooling in the slow cooling zone and final cooling zone
Coating by roller coater and drying in a floater furnace

Process simulation before heat treatment makes it possible to identify suitable annealing programs to achieve the specified magnetic and mechanical properties
Hydrogen regeneration units, which provide hydrogen savings of up to 50 %, are available

Technology Patent of " JJRS-Sendzimir"

The launch of " JJRS-Sendzimir" depends on a number of technology patents innovated by ourselves.

1. Steel coil printing line:

2. Aluminium coil printing line:

Beijing JJRS Technology Development Co.,Ltd. registered in national high-tech park - Beijing Economic and Technological Development Zone, is a high-tech enterprise specialized in a complete set of metallurgical equipments for metal surface coating and steel strip intensive processing, its technology integrates machinery, optics, electricity and hydraulic pressure together. 

JJRS is professional on turn-key projects from general planning, designing to manufacturing, installing, commissioning and service. Besides, its business also covers the designing, manufacturing of single equipment, and automatic control system of engineering projects.

JJRS has passed ISO9001 quality management system certification, ISO14000 enviromental management system certification and GB/T28001 occupational health safety management system certification.

JJRS is committed to technology innovation and continuous process improvement of the metallurgical equipment, has achieved a number of scientific research achievements in energy conservation, waste recycling, etc. JJRS has obtained numbers of national patents and won a good reputation from customers both in China and abroad.

Bearing philosophy of advanced technology, professional team, customers first and perfect service in mind, JJRS gathers excellent technology research team and highly qulified management personnel together, the company has perfect management systerm, powerful engineering design and complete project capability by virtue of exquisite technology and scientific management.