Casting Steel Spool Used In Rolling Mill Machine Of Copper Foil
***************************Advantage of GWspool*******************************
1、Our company adopts advanced smelting and casting technology, with the equipment has accurate inspection to ensure the chemical composition of the casting steel sleeve material is reliable and accurate, also has the same characteristics.
2、Centrifugal casting is adopted to guarantee the inner and outer surface of the casting steel sleeve is free from defects such as cracks, slag inclusion, pores and sand holes.
3、Adopt mature heat treatment technology to ensure the mechanical properties of steel sleeve.
Description of heat treatment of steel sleeve:
We will conduct heat treatment strictly for casting steel spool which have the specific demand in mechanical property, also in corresponding testing of the mechanical property, make sure every product to achieve the best condition and customers’ good results.
We used our independent dedicated device-hole drilling machine which is reaserched and developed by ourselves, it also obtain the national patent. The machine is provided with good rigid, no returning clamp and machine and high accuracy on the processing of machining.
Through continuous improvement, our company formed a integrated processing technic system to ensure concentricity, cylindricity, degree of symmetry and dynamic balance of the sleeve.
Specific accuracy tolerance and geometric accuracy tolerance is strictly according to the customers’ requires.
- GW Precision
- China，Luoyang
- Contractual Stipulation
- Anual Capacity of Steel Spool is 4000 pieces
- Information
Casting Steel Spool Used In Rolling Mill Machine Of Copper Foil
| Casting Steel Spool | Material | Specification |
| Used In Rolling Mill Machine Of Copper Foil | 35CrMoV | 565*505*1600 |
| 35CrMoV | 665*605*2000 |
Mechanical properties (quenched+tempered) of Casting Steel Spool
The typical properties of Cr-Mo-V alloy after heat treatment are as follows:
Typical test conditions for performance indicators
Hardness HRC 48-52 at room temperature, Rockwell hardness (ASTM E18)
Tensile strength (σ ₆) 1500-1800 MPa tensile strength at room temperature (ASTM E8)
Yield strength (σ ₀) ₂) 1200–1400 MPa
Elongation (δ) 10-15% gauge length 50mm
Impact toughness 20-40 J/cm ² Charpy notch impact test
Red hardness: Hardness ≥ HRC 38 at 600 ° C, tested after 1 hour of high temperature maintenance
Casting Steel Spool Production Process
We used our independent dedicated device-hole drilling machine which is researched and developed by ourselves, it also obtain the national patent. The machine is provided with good rigid, no returning clamp and machine and high accuracy on the processing of machining. Through continuous improvement, our company formed a integrated processing technic system to ensure concentricity, cylindricity, degree of symmetry and dynamic balance of the casting steel spool. Specific accuracy tolerance and geometric accuracy tolerance is strictly according to the customers’ requires.
The workblank of casting steel spools will be processing on the hole drilling machine, which was developed by our company. In the boring machine, the sleeve blank can be adjusted to concentric of both the front and rear ends of the aperture, so as to achieve smooth cutting and improve machining accuracy. In the cutting process, the workpiece is fixed without rotating, and the way that tool shaft rotates to cut the inner hole avoid the error of taper or other shapes. Smooth chip removal during the cutting process allowsto improve the surface smoothness and not easy to scratch the processed surface.
After the hole drilling processing is completed, the casting steel spool will be processed during the Double self-centering nc machine tool, in double (this machine tool is developed after many years of experience in research of high precision large size double self-centering nc machine tool). On both ends of the sleeve are the hydraulic support chucks that can quickly locate on both ends of the inner hole and ensure the concentricity on both ends of the inner hole are within the allowed tolerance; The machine tool starts to process the outer circle and ensures that the concentricity of the inner and outer circle is within the allowable tolerance range. The conical circles of inner holes at both ends are also concentric within the permissible tolerance.
Dynamic Balancing Test for casting spools
In terms of inspection, in order to safeguard the benefits of customers and ensure better quality of casting steel spool products, we have conducted various tests on mechanical properties after heat treatment in addition to conventional dimensional inspection.Ring belt dynamic balancing machine can be 100% dynamic balancing test.
