Cr27Mo0.5 Kleemann Blow Bar for Impact Crusher

Impact Crusher Blow Bar Introduction

Impact crusher blow bars are essential components in horizontal shaft impact (HSI) crushers, responsible for breaking down materials such as concrete, asphalt, and limestone through high-impact forces. These blow bars are designed to withstand extreme forces (up to 15,000 kN) and abrasive wear, making them crucial for industries like construction, mining, and recycling.

What's the advantage for Cr27Mo0.5/Cr27Mo1/Cr27Mo2?

Adding molybdenum metal can obviously improve the properties of materials:

1. Hardenability

2. Depth of hardening

3. Mechanical properties of

4. Oxidation resistance

5. Abrasion resistance

6. Refined internal crystal granularity

Which Models We Have?

Specifications

Impact crusher wear spare parts blow bars are available in various metallurgical compositions to suit different applications:

1. **Low Chrome (≤10% Cr)**

   - **Characteristics:** Toughness (HRC 45-50)

   - **Applications:** Suitable for handling rebar-contaminated concrete and aggregate.

   - **Advantages:** High impact resistance and durability.

2. **Medium Chrome (10-18% Cr)**

   - **Characteristics:** Combines wear resistance (HRC 52-56) with impact strength.

   - **Applications:** Ideal for granite and limestone.

   - **Advantages:** Balanced wear resistance and toughness.

3. **High Chrome (≥18% Cr)**

   - **Characteristics:** Superior hardness (HRC 58-62).

   - **Applications:** Best suited for highly abrasive materials like asphalt and quartzite.

   - **Advantages:** Long lifespan in abrasive conditions.

4. **Hybrid Alloys**

   - **Characteristics:** Combines high chrome's durability with low-carbon steel's toughness.

   - **Applications:** Extends lifespan by 46% in high-abrasion environments.

   - **Advantages:** Enhanced wear resistance and reduced maintenance.

The blow bar is a crucial component in an impact crusher, playing a pivotal role in the crushing process. The main functions as follows:

Impact Force Generation

The blow bar is mounted on the rotor of the HSI crusher and rotates at high speeds. When the rotor spins, the blow bar strikes the material fed into the crusher, generating a high-impact force that causes the material to shatter and break down into smaller pieces.

Material Shredding and Size Reduction

The repeated strikes by the blow bar help to shred the material into smaller, more manageable sizes. By continuously striking the material, the blow bar reduces it to the desired size for further processing or use. This is essential for achieving effective size reduction in various applications such as construction, mining, and recycling.

Wear Resistance and Durability

High quality HSI blow bars are made from materials such as high manganese steel, martensitic steel, chrome steel, and even ceramic inserts, depending on the specific application. These materials offer varying degrees of wear resistance and impact strength, ensuring that the blow bar can withstand the extreme forces and abrasive wear during the crushing process. Proper selection of blow bar material based on the type of material being crushed can significantly enhance the efficiency and longevity of the impact crusher.