1. In 2018, we producedNickel Hard White Cast Iron Chute Lining PlatesAS2027 Ni-hard4-600, delivered to Australia.It is the second time to delivery to there this year.
  2. The size of Nickel Hard White Cast Iron Chute Lining PlatesAS2027 Ni-hard4-600 is:

296 x 96 x 20mm

Nickel Hard White Cast Iron Chute Lining PlatesAS2027 Ni-hard4-600

3.We adopt sand casting process.The size tolerance is CT11.We do proper heat-treatment process to achieve the hardness about HB600.

Nickel Hard White Cast Iron Chute Lining PlatesAS2027 Ni-hard4-600

4.The material grade is Nickel Hard White Cast Iron Chute Lining PlatesAS2027 Ni-hard4-600,which chemical composition is shown in the following Figure:

Composition

(%)

C Si Mn Cr S P Ni Mo Hardness
Ni-hard 4-600 2.6-3.2 1.8-2.0 0.4-0.6 8.0-9.0 ≤0.10 ≤0.06 4.5-6.5 ≤0.4 ≥HRC57

(Eqv.HB600)

5.Nickel hard cast iron is mainly nickel chromium white cast iron.

The chemical composition of Ni-Hard 1 is(%) :

C3.0 ~ 3.6, Si0.3 ~ 0.5, Mn0.3 ~ 0.7, N i3.3 ~ 4.8 Cr1.5 ~ 2.6;

The chemical composition of Ni-Hard 2 is (%) :

C 2.9, or less Si0.3 ~ 0.5, Mn0.3 ~ 0.7, 3.3 ~ 5.0, Ni Cr1.4 ~ 2.4;

The chemical composition of Ni-Hard 4 is (%) :

C2.6 ~ 3.2, Si1.8 ~ 2.0, Mn0.4 ~ 0.6, Ni5.0 ~ 6.5, Cr8.0 ~ 9.0.

6.They are mainly martensite, and there are some bainite and austenite.Carbide no. 1,2 is (Fe,Cr)3C, while nickel hard no. 4 is (Cr,Fe)7C3. Therefore, they are of high hardness.Nickel hard 2 is HRC52~59.Nickel hard no. 4 is HRC53~63.Nickel-hard cast iron is best melted in an electric furnace, easy to control the composition and casting temperature, and usually requires heat treatment.Nickel-hard No. 1,No.2, heat treatment is 275 ℃ (12 ~ 24 h), which changes the austenite to bainite and martensite tempered, in order to improve the hardness, toughness and fatigue strength.Heat treatment for nickel hard No.4 750 ~ 800 ℃ (4 ~ 8 h), cold air cooling or furnace, can improve the hardness and impact resistance.Nickel hard cast iron is widely used to resist abrasion, such as roller, liner, mill roller and grinding ring of coal mill, conveying pipe, impurity pump flow parts, etc.

 

 Eternal Bliss Alloy Casting & Forging Co, Ltd.

Technical Dept.

2018.9.10

Humor Chen

Email:wear@ebcastings.com

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