Manganese Steel Grinding Ball I

Coal Powder Grinding Ball Mill Machine

Forged steel ball is divided into carbon grinding steel ball, manganese grinding steel ball and special grinding steel ball. Forged steel ball is one of our advantage products. Diameter 20-70mm and 80-150mm steel ball are produced respectively by advanced automatic hot rolling and hot forging steel ball production line.

Description

Manganese steel grinding ball I is popular in Korea, Japan and North Korea, impact value is more than 12J/CM^2, manganese content is about 0.6-1.0%. This is the cheapest one in the manganese grinding balls. The performance as follow:

Chemical Composition C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
0.48-0.56 0.17-0.37 0.6-1.0 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Size 20-150mm(0.8inch-6inch)
Hardness Serious  Hardness
Standard Hardness 50-55HRC
High Hardness 55-60HRC
Impact Value ≥12J/CM^2
Balls Number ≥12000times
Microstructure M+C(C-Carbide  M-Martensite )

Other customized material

Series/Element C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
80# 0.77-0.85 0.17-0.37 0.50-0.80 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
40Mn 0.37-0.44 0.17-0.37 0.70-1.0 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
40Mn2 0.37-0.44 0.17-0.37 1.40-1.80 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
70Mn 0.65-0.75 0.17-0.37 0.90-1.20 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
70Mn2 0.65-0.75 0.20-0.45 1.4-1.8 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
40Cr 0.37-0.45 0.17-0.37 0.50-0.8 0.80-1.1 0-0.25 0-0.30 0-0.035 0-0.035
70Cr2 0.65-0.75 0.20-0.30 0.75-0.90 0.55-0.70 0-0.25 0-0.30 0-0.030 0-0.030
B1 0.52-0.65 0.17-0.37 0.60-1.2 0-0.25 0-0.25 0-0.30 0-0.035 0-0.035
B2B 0.58-0.65 0.17-0.37 0.90-1.0 0.60-0.65 0-0.25 0-0.30 0-0.035 0-0.035
B4 0.60-0.65 1.60-1.70 0.70-0.80 0.70-0.80 0-0.25 0-0.30 0-0.035 0-0.035
B-6 0.75-0.85 0.2-0.40 0.90-1.0 0.85-0.95 0-0.25 0.06-0.13 0-0.035 02-0.035
B-6A 0.82-0.95 0.20-0.40 0.92-1.02 0.80-0.95 0-0.25 0.06-0.10 0-0.035 0-0.035
B-7 0.35-0.40 0.17-0.37 0.70-0.80 0.90-1.0 0-0.25 0-0.30 0-0.035 0-0.035
BV 1-1.06 0.17-0.37 0.9-1.0 0.55-0.65 0-0.25 0-0.30 0-0.035 0-0.035
GCr15 0.95-1.05 0.15-0.35 0.20-0.40 1.30-1.65 0-0.25 0-0.10 0-0.027 0-0.20
16Mn 0.13-0.19 0.2-0.6 1.2-1.6 0-0.30 0-0.25 0-0.03 0-0.03

Forged Steel Ball Production Process

1)Fully automatic production line of hot rolling steel ball
Raw material testing→Material on storage rack→automatic continued feeding device→furnace heating→
enter into rolling ball machine→automatic isothermal transfer→quenching system→steel ball heating preservation device→finished steel ball testing→package→transport to warehouse

2)Automatic production line of hot forging steel ball
Raw material testing→Material on storage rack→furnace heating→hot cutting→preforging→enter into rolling ball machine →automatic isothermal system transport
→quenching system→steel ball heating preservation device→finished steel ball testing
→package→transport towarehouse

3)Traditional production line of forged steel ball
Raw material testing→Cutting raw material→furnace heating→forging→automatic isothermal system→quenching system→steel ball heating preservation device→finished steel ball testing→package→transport to warehouse

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