Alloy Indefinite Chill Mill Roll
Properties
The mechanical properties are improved due to the presence of chilled surface strcture and the change of pinetree-like structure. The hardness and type of matrix of roll depend on the conditions of application. The roll produced with centrifugal method basically eliminates the presence of graphite in its working layer while the core is made of nodular cast iron, increasing as a result, both the wear-resistance and breaking strength.
Chemical Analysis
Designation of rolls | C | Si | Mn | P | S | Ni | Cr | Mo |
| NiCrMo chilled cast iron rolls (I) | 2.9/3.6 | 0.25/0.8 | 0.2/1.0 | ≤0.4 | ≤0.08 | 0.5/1.0 | 0.2/0.6 | 0.2/0.6 |
| NiCrMo chilled cast iron rolls (II) | 2.9/3.6 | 0.25/0.8 | 0.2/1.0 | ≤0.4 | ≤0.08 | 1.0/2.0 | 0.3/1.2 | 0.2/0.6 |
| NiCrMo chilled cast iron rolls (III) | 2.9/3.6 | 0.25/0.8 | 0.2/1.0 | ≤0.4 | ≤0.08 | 2.0/3.0 | 0.5/1.5 | 0.2/0.6 |
| NiCrMo chilled cast iron rolls(IV) | 2.9/3.6 | 0.25/0.8 | 0.2/1.0 | ≤0.4 | ≤0.08 | 3.0/4.5 | 0.5/1.7 | 0.2/0.6 |
Physical Properties
Designation of rolls | Barrel hardness (HSD) | Neck hardness (HSD) | Tensile strength (MPa) | Depth of chilled lager |
| 200 | 200/250 | 250/300 | 300 |
| NiCrMo chilled cast iron rolls (I) | 60~70 | 32~50 | >150 | 12~25 | 15~30 | 17~35 | 20~45 |
| NiCrMo chilled cast iron rolls (II) | 62~75 | 35~52 | >150 | 12~25 | 15~30 | 17~35 | 20~45 |
| NiCrMo chilled cast iron rolls (III) | 65~80 | 40~55 | >150 | 12~25 | 15~30 | 17~35 | 20~45 |
| NiCrMo chilled cast iron rolls(IV) | 70~85 | 32~45 | >150 | 12~25 | 15~30 | 17~35 | 20~45 |
Microstructure
Designation of rolls | Microstructure |
| NiCrMo chilled cast iron rolls (I) | Pearlite + cementite +ledeburite |
| NiCrMo chilled cast iron rolls (II) | Fine pearlite + cementite +ledeburite |
| NiCrMo chilled cast iron rolls (III) | Sorbite + cementite + ledeburite |
| NiCrMo chilled cast iron rolls(IV) | Sorbite + cementite + ledeburite |
Application
Designation of rolls | Application |
| NiCrMo chilled cast iron rolls (I) | Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand |
| NiCrMo chilled cast iron rolls (II) | Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand |
| NiCrMo chilled cast iron rolls (III) | Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand, tube stretch reducing mill |
| NiCrMo chilled cast iron rolls(IV) | Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand, tube stretch reducing mill |
Depending on the excellent leadership, stable and professional employees, perfect management system and rapidly developing business, Camet Metallurgical Technologies Co., Ltd. Has developed into the one of the Chinese professional providers destined for offering cost-effective products and value added trading service in the field of metallurgical engineering. We are looking forward to establishing a win-win situation between you and Camet.
We have been supplied to more than 40 steel factories from USA, Mexico, Brazil, Argentina, Thailand, India, UK, Italy, Russia, Turkey, Kenya, Kuwait, such as Mittal, V&M, US steel, Corus Euro, etc. We have achieved excellent reputation from our customers.
Camet Metallurgical Technologies Co., Ltd. Has already certificated under ISO9001: 2000 quality control system since 2006, at the same time, recorded in DUNS global credit standing system (DUNS No.: 52794-3626). We will do our best to build an effective bridge between you and China under the condition of global trade integration.
