Rolling Mills/ Technology / Projects
Over 50 years of experience in the rolling mill industry has enabled our team to develop innovations which bring hot and cold rolling processes into the 21st century, vastly improving efficiency and production costs.
CISDI not only provides rolling equipment which will increase your productivity. Our team also provide system integration for three-roll mandrel mills and automatic control for tube mills.
For more information on our rolling mill services and machinery, get in touch with our engineering experts.
Industrial Furnace Technology
Walking Beam RHF
CISDI is one of the innovators responsible for the development of walking beam RHF technology. More than 80 walking beam RHFs have been designed and put into use. CISDI industrial furnace has made important contributions to the Chinese steel industry.
Over the past decade, dozens of Annular RHFs have been built for reheating pipes in tube plants and reheating rolling tubes in wheel hub factories. CISDI industrial furnace has become the leading supplier for annular RHF in the domestic market.
Heat Treatment Furnaces
CISDI offer the following technologies which can be used for: continuous galvanizing, quenching, annealing, tempering, hardening, solution treatment and stainless steel bright annealing, which allows the customer to produce a product that satisfies their exact specification.
- Heat treatment furnace for pipe
- Roller hearth furnace for heavy plate furnace
- Continuous galvanizing and annealing furnace
Evaporative Cooling System and Waste Heat Recovery Technology
CISDI have developed patented and proprietary technologies for evaporative cooling and waste heat recovery, which improve the overall efficiency of the plant. These include:
- Patented technology for invention of evaporative cooling system with forced recirculation
- Patented technology for practical new walking device
- Proprietary low drum evaporative cooling system in natural circulation
- Proprietary waste heat recovery technology with lower waste gas temperature
- CISDI has developed its hydraulic computation software for circulation cooling water
Accurate finite element analysis is used to ensure design accuracy and efficiency. CAE technology is used to analyze the reliability and safety of products, to optimize the design and improve the product quality. Virtual and multi-condition simulations are used to minimize R&D costs, shorten the R&D cycle to bring new products to market.
Long Product Technology
Modified Breakdown Mills
CISDI have developed new model breakdown mills (BDCD850, BDCD1,000, BDCD1,350). These have been successfully implemented into the Xingtai Steel quality wire and rod mill, NISCO medium section mill and NISCO Jinxing heavy section mill.
Serialization Mill with Housing
A wide range of high-rigidity housing mills are available, including HSCD700, HSCD610, HSCD560, HSCD480 and HSCD430. These six models can be used in a wide array of applications across the rolling process from acting as a roughing mill through to acting as a pre-finishing mill in either continuous rod rolling or high-speed wire rolling.
Rod & Wire Reducing & Sizing Technology
CISDI offer patented reducing and sizing mills for rods and wires equipped with front and rear water coolers. This contributes to better grain size and dimensional accuracy of medium and small sized rods and high-speed wires. CISDI has good knowledge of reducing and sizing technology for rods, wires and large coils, and is leading the field in China especially for alloy steel products.
CISDI have developed a range of FSCD flying shears for long products, which are applicable for rods as large as Ø130mm and triple-cutting ribbed bar as small as Ø8mm. The cutting speed varies from 0.5m/s to 24m/s. The flying shears can cut premium long products such as straight carbon steel, bearing steel, spring steel and mould steel. The flying shears have been successfully implemented in the premium rod rolling line in Pangang Changchen Steel.
Split Rolling and Controlled Cooling
CISDI provide equipment for double-splitting, triple-splitting and quadric-splitting with a minimum splitting size of 8mm. CISDI can provide controlled cooling technology for rods to enhance the rebar strength, which has been successfully applied in the wire and rod mill of KINSTEEL (Malaysia).
Tube Mill Technology
Integration of Three-Roll Mandrel Mill System
Through technological innovation, CISDI have developed the most advanced three-roll mandrel mill system in the world.
Off-line Analysis Software for Three-roll Mandrel Mill
Using finite element techniques, CISDI has developed a software package that can be used for accurate offline analysis. The system provides several models which can be used for analysis, these are as follows:
- Geometrical model
- Mandrel model
- Kinetic model
- Tube extracting model
- Mechanical adjustment calculation
- Roll gap set up model
Micro-Tension Reducing Mill
Three-roll micro-tension reducing mill developed by CISDI features leading equipment performance and electrical control in China. The reference list covers Ø114, Ø159 and Ø273 line.
Accurate Pipe Layer Positioning Device
CISDI created the pipe layer positioning device to bridge the technological gap in the market. It is being used on the Ø273mm PQF mill line for Anhui Tianda Steel.
Automation Control for Tube Mill
CISDI can provide all-round services such as EIC system integration, basic automation design, process automation design and software development, etc. for customers worldwide.
Cold Rolling Technology
Continuous Pickling Line Coupled with Cold Tandem Mill
CISDI can supply basic engineering, detail engineering, software programming and commissioning for continuous pickling lines coupled with cold tandem mills. Turbulent pickling and five-stand six-high tandem mill has been implemented into the 1450mm cold sheet/coil line for Tangshan Fengnan which was supplied by CISDI on an EPC basis. CISDI have replaced foreign companies in being the leading supplier for cold strip mills in China.
Six-High Single-Stand Reversible Cold Rolling Line
CISDI have provided the fastest six-high single stand rolling mill in China with a rolling speed of 1200m/min. This was provided by CISDI on an EPC basis.
Continuous Annealing and Galvanizing Lines
CISDI are the leading designers in continuous annealing, continuous aluminizing/galvinizing and continuous galvanizing/annealing in China.
Skin Pass Machine
Skin pass machines developed by CISDI have been applied in many continuous galvanizing projects, making us the leading supplier in the world.
Hot Rolling Technology
Hot Strip Mill Technology System Integration
CISDI are the ideal supplier for hot strip mills, with abundant experience in EPC, EP, independent system integration and overall technical responsibility in this field. CISDI have many proprietary products in this field, ensuring that the quality is up to the internationally advanced level.
Flying Crank Shear
CISDI designed the largest flying crank shear in China; it can cut through high-strength API5L-X100 pipeline steel of 60mm thickness and 2,150mm width.
Hydraulic Servo System for Hot Strip Mills
CISDI have developed a fully proprietary hydraulic servo control system alongside the 1,750mm hot strip mills for Xinjiang Bayi Steel and Tiantie. The successful implementation of this technology has filled the technological gap in China.
Efficiency Laminar Cooling Device
CISDI patented efficiency laminar cooling device is comprised of three zones: intensified cooling zone, micro zone and trimming zone. With maximum cooling intensity of 170m3/m2h. It can be applied in various patterns to adapt to micro-alloy high-strength steel, high-strength steel with ultra-fine grain, DP, TRIP and MS rolling.
Skin Pass and Coil Dividing Line
CISDI provide leading skin pass mill technology, offering solutions for a variety of sizes including: 1,450mm, 1,500mm, 1,580mm, 1,750mm, 1,780mm, 1,880mm, 2,050mm, 2,250mm. The skin passed strip can have tensile strength up to 1,200MPa.
CISDI have designed the most powerful downcoiler in China for high-strength pipeline steel API 5L X 100 of 20mm (thickness) X 2,150mm (width).
Air Mist Cooling in Heat Treatment
CISDI developed the innovative air mist cooling plant for plate heat treatment.