Cold Drawn Bearing Steel

Product Parameter

Grade Steel

Gcr15 A485 SKF3 JIS SUJ2 1.3503

Chemical Composition

C :0.95-1.10

Mn :<0.50

P :<0.025

S :<0.025

Cr :1.30-1.60

Si :0.15-0.35

Condition

Anneal 150-230HB

Standard

AISI GB JIS DIN

Orginal

CHINA

Technological Process

CUTTING STEEL MATERIAL- Flate/ Round (Vertical Cutting/ Horizontal Cutting machine)
MACHINE MILLING -Plate / Round (Plane washing/ Peeling Machine)
Block Cutting(Customized Size)
Machine Grinding (Grinding Machine/ / Cold Draw Machine)
Side Milling / Round Milling(Plate: 2 / 4 / 6 side milling) / (Round:Cold draw/ Grinding/ Turned, Etc.)

Size

25-360*310*710*3000-5000(Customized Size) Round:6-300mm*5800

Surface

Milling/ Mirror

Application

For general plastic mold , automobile , Machine tool bearing , steel ball , roller , axle sleeve , cold rolling .
Making internal combustion engines. Steel balls, rollers and shaft sleeves on transmission shafts of electric locomotives, machine tools, tractors, steel rolling equipment, drilling machines, railway vehicles and mining machinery.

Sample

Size: 1-3 Pcs 30*30mm By courier (DHL/UPS/EMS...) Freight collect. 3-7Days

Steel Introduction

The comprehensive performance is good. After quenching and tempering, the hardness is high and uniform, and the wear resistance and contact fatigue strength are high. Good hot workability, good machinability after spheroidizing annealing, but sensitive to the formation of white spots.

PROCESS

CUTTING STEEL MATERIAL- Flate/ Round (Vertical Cutting/ Horizontal Cutting machine)

MACHINE MILLING -Plate / Round (Plane washing/ Peeling Machine)

Block Cutting(Customized Size)

Machine Grinding (Grinding Machine/ / Cold Draw Machine)

Side Milling / Round Milling(Plate: 2 / 4 / 6 side milling) / (Round:Cold draw/ Grinding/ Turned, Etc.)

MACHINE MILLING SERVICE
For Customer a Various of Requirement
A. Steel plates: Cutting by bandsaw machine, milling, heat treatment, etc
B. Round bars: Cutting by bandsaw machine, peeling, grinding and turned, heat treatment, etc Packing

Tempering:

Tool steels are tempered at 482-593°C (900 to 1100°F) for a Rockwell C hardness of 28 to 34.

Annealing:

Annealing takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.

Cold Working:

Tool steels are capable of being readily cold worked by using conventional tooling methods with the alloy in the annealed condition.

Welding:

Conventional methods are used for welding of P20 tool steels.

Forging:

Tool steels are forged at 1093°C (2000°F) down to 899°C (1650°F). Forging below 871°C (1600°F) is not recommended for these steels.

Forming:

Tool steels can be readily formed by conventional methods in the annealed condition.

Machinability:

Tool steels have excellent machinability at about 80% that of water hardening steels.

Heat Treatment:

Tool steels are heated to 871-899°C (1600-1650°F) in the carburizing medium during the carburizing process. After being carburized, these steels are heated to 816-871°C (1500-1600°F) in order to be hardened and then held for 15 minutes and finally oil quenched.

Applications:

Tool steels are used for low-temperature applications that include injection molds and die casting dies.

Shapes

Sizes

Processing

Steel Round Bar

5mm to 63.5mm

Cold Drawn

Steel flat Bar

63.5mm-120mm

Smooth-turned and polished.

Cold drawn steel square bar

5*5mm to120*120mm

Cold Drawn

Cold drawn steel hex bar

5mm to120mm

Cold Drawn

Cold drawn steel hexagonal bar

5mm to 120mm
(side to side)

Cold Drawn

Straightness

Max 1mm/m

Tolerance

H9 h10 h11 or as required