Case Hardened Rollers
The Hi-Hard Corporation provides precision CNC machined case hardened, flame and induction hardened steel products. The rolls shown here were manufactured from various metals such as alloy steel, 400 stainless steel, and iron. Various sizes were produced featuring outside diameters from 1.5″ to 20″, and up to 175″ in length.
Manufacturing required precision CNC turning and grinding, as well as dynamic balancing. Heat treatment consisted of flame hardening with case depths of 3/32″ to 1/8″ per side and induction hardening with case depths up to 1/4″ per side, with hardness up to 65 Rc. All of the products we produce are put through rigorous quality control, these rolls were tested for dimensional accuracy, surface finish consistency, and NDT testing. For more information on these precision CNC machined case hardened alloy steel rolls, see the table below.
The flame and induction harden rolls are made from medium-high cabon and alloy steels. Rollers can be produced in solid and fabricated form. Hardness and depth of hardness vary on the material used and the metod of hardening performed. The induction harden product is good for heavy/medium wear applications and offer good life with the ability of great case depth. The flame hardened product is good for light wear applications. These products offer shorter lead times and depending on size can be the lowest cost case hardened product.
Product Description
Precision CNC Machining Capabilities Applied/Processes
Primary
CNC Machining
Lathe Turning
Secondary
Grinding
Heat Treatment
Welding
Equipment Used to Manufacture Part
Lathe
Cylindrical Grinder
Heat Treatment Furnace
Quench Tank
Temper Box
Vertical Mill
Dynamic Balance
Presses
Advantages
Long Case Depth and Hardness Roll Life
Short Lead Time to Produce
Ideal for Light, Medium, or Heavy Wear Applications
Overall Part Dimensions
O.D.: ø 1.5″ to 20″
Length: up to 175″
Tightest Tolerances
±0.0002″
Material Used
Alloy Steel: 1045, 4140, 4150, 52100, 6150
400 Stainless Steel
Iron
Heat Treatment
- Flame hardening
- Induction hardening
- Hardness up to 65 Rc
- Can draw hardness back to lower levels by tempering
- Size will vary depending on heat treat method
Material Finish
Secondary
- Ground to desired specification
- Coatings – chrome, TCC, zinc
- Shot blast
In Process Testing/Inspection Performed
Dimensional Testing
Hardness Testing
NDT Testing
Surface Finish Testing
Industry Focus
Aerospace
Can Flooring
Food Processing
Non-Ferrous Operations
Paper
Plastic
Push Pull Pickle Lines
Printing
Roofing
Steel Service Centers
Steel – Cold Mills
Steel – Pickle Lines
Steel – Galvanizing Lines
Steel – Temper Mill
Steel – Hot Mills
Steel – Plate Mills
Z Mill Operations
Delivery/Turnaround Time
4 Weeks Min
Delivery Location
United States
Canada
Mexico
Standards Met
Customer supplied print, 2D CAD Drawing
Product Name
Case Hardened – Flame and Induction Hardened Products