High carbon cast iron parts
+
  • High carbon cast iron parts

1. Introduction to High Chromium Cast Iron Parts

High chromium cast iron is a wear-resistant alloy cast iron characterized by a high chromium content (usually ≥11%). With its ultra-high hardness, excellent wear resistance, and certain corrosion resistance, it has become a material used in mining, cement, power, and other industries to combat severe wear conditions.

Composition and Microstructure

Element

Typical Content

Core Function

Chromium (Cr)

11-30%

Forms M₇C₃ type carbides (hardness HV1500-1800), constituting the wear-resistant framework; improves matrix corrosion resistance.

Carbon (C)

2.0-3.5%

Combines with chromium to form carbides; higher content increases wear resistance (but also increases brittleness).

Molybdenum (Mo)

0.5-3.0%

Refines grains, inhibits high-temperature pearlite transformation, and improves hardenability (essential for thick-walled parts).

Copper (Cu)

0.5-1.5%

Replaces molybdenum to reduce cost and enhances corrosion resistance (especially in acidic conditions).

Nickel (Ni)

0.5-1.5%

Stabilizes austenite and improves toughness (synergistic with molybdenum).

Manganese/Silicon

≤1.5%

Deoxidation and flow control; excessive amounts reduce toughness.

2. Advantages

Wear resistance under rolling: Under abrasive wear conditions, its lifespan is 3-5 times that of high manganese steel and more than twice that of ordinary white cast iron. M₇C₃ carbides have hardness close to corundum sand (Al₂O₃), capable of resisting quartz wear (hardness HV1000-1200).

Corrosion wear resistance: When Cr content ≥20%, corrosion resistance in slurry with pH=3-12 is significantly better than low alloy steel.

High-temperature stability: Hardness does not significantly decrease below 600°C (better than most wear-resistant steels).

3. Key Control Points in Manufacturing Process

1. Casting Process

Melting: Medium-frequency induction furnace + argon deoxidation (reduces slag inclusions).

Pouring: Low temperature and fast pouring (1380-1420°C) to avoid chromium oxidation.

Riser design: Must use insulated risers + exothermic agents to compensate for the shrinkage rate of high chromium iron (≈2.1%).

2. Core Heat Treatment

Stage

Process Parameters

Purpose

Equipment Requirements

Soft Annealing

950°C × 4h → furnace cooling to 700°C

Eliminate casting stress and prepare for machining.

Controlled atmosphere furnace.

Quenching

980-1050°C × 2-4h → air cooling/oil cooling.

Matrix transforms to martensite to achieve high hardness.

Precise temperature control (±10°C).

Tempering

200-450°C × 4-8h.

Eliminate quenching stress and adjust toughness.

Avoid brittleness zone between 450-550°C.

Warning: Thick-walled parts (>100mm) must use stepped heating (300°C/h), otherwise cracking is inevitable!

4. Typical Application Scenarios and Failure Analysis

Main application fields: High chromium cast iron parts are widely used in mining, cement, power, road construction machinery, refractory materials, and other areas. Since the 1980s, they have been extensively used in the manufacture of shot blasting machine chambers, shot blasting blades, and liners, effectively preventing high-speed dense shot streams from penetrating steel plate shells. They also have broad applications in construction, power, and mining sectors.

Typical application examples: As a highly wear-resistant material, it has been effectively applied in crushing, grinding, material conveying machinery, and metallurgical equipment, especially in parts subject to abrasive and impact wear, such as crusher drums, silo liners, blast furnace bellows, hoppers, coal chute liners, coal mill rollers, rolling bars, and slurry pump flow parts. For example, the high chromium grooved liners installed in early 1988 at Henan Xiangshan Group (formerly Henan Yanshi Cement Plant) operated for 12 years, saving the plant significant costs and reducing the frequency of liner replacements.

Keywords

Previous: Manganese Steel Series Products

Next： Low-carbon martensitic steel jaw plate

High carbon cast iron parts
+
  • High carbon cast iron parts

High carbon cast iron parts

Our company specializes in manufacturing wear-resistant castings for grinding equipment, as well as main bearing shells and support shells of various specifications for mills.

Contact Information

Contact Us

Phone: +86-18695999359

Email: sales@zszxjx.com

Product Categories

Wear-resistant products

Product Inquiry Related Products File Download

Get a Quote

Note: Please leave your contact information, our professionals will contact you as soon as possible!

Submit

Related Products

Related Products

Ball mill

Ball mill

Rod Mill

(Semi) Autogenous Mill

Mining Hoisting

Single-rope Winding Mine Hoist

Multi-rope friction mine hoist

Well Drilling Hoist

Supporting Equipment

Mining Washing and Selection

Selective Crusher

Centrifuge

Flotation machine

Filter machine

Grading Machine

Mining Auxiliary Equipment

Gear Reducer Series

Category One

Category Two

Crusher Series

Rotary Crusher

Jaw Crusher

Impact Crusher

Cone Crusher

Ball Press Machine

High-pressure briquetting machine

Medium and High Pressure Briquetting Machine

Roller Press

Rotary kiln

Cast and forged parts

Large castings

Large Forgings

Transmission Accessories

Crankshaft

Gear Coupling

Gear

Electro-hydraulic control system

Automation Control

Hydraulic System

Hydraulic cylinder

Other accessories

Large welded components

Wear-resistant products

Engineering Plastics

Roller shaft

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.

%E7%AC%AC%E4%B8%80%EF%BC%8C%E6%9C%80%EF%BC%8C%E4%BC%98%E7%A7%80%EF%BC%8C%E5%A2%9E%E5%BC%BA%EF%BC%8C%E4%B8%80%E6%B5%81

Sorry，当前栏目暂无内容!

您可以查看其他栏目或返回 首页

Sorry，The current column has no content!

You can view other columns or return Home