Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-hardness wear-resistant cast iron and preparation method thereof

A technology of wear-resistant cast iron and high hardness, which is applied in the field of metal materials, can solve the problems of poor wear resistance of materials, and achieve the effect of improving hardness and wear resistance, high hardness and good wear resistance

Inactive Publication Date: 2020-11-06
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cast iron contains more than 20% Cr, the hardness of the cast iron after air-cooling and quenching is above 60HRC, but the wear resistance of the material is not good

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-hardness wear-resistant cast iron and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Below in conjunction with embodiment the present invention is described in further detail.

[0031] Embodiments 1 to 5 are the components of the high-hardness wear-resistant cast iron of the present invention, and the specific components are shown in Table 1. The preparation process of the cast iron is as follows:

[0032] 1) Smelting: Manganese, chromium, vanadium, molybdenum, titanium, and tungsten are added to the smelting furnace in the form of their respective master alloys ferromanganese, ferrochromium, ferrovanadium, ferromolybdenum, ferrotitanium and ferrotungsten, and nickel is in the form of pure nickel Adding; first add ferromolybdenum, ferrotungsten, cast iron, steel and some ferrochrome and ferrovanadium to the bottom of the crucible of the induction melting furnace. Ferro-vanadium and the remaining ferrochrome and ferro-vanadium, and finally ferromanganese.

[0033] 2) Pouring; the temperature of the melt is controlled at 1500-1600°C, the pouring temperat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Rockwell hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to high-hardness wear-resistant cast iron. The high-hardness wear-resistant cast iron is characterized by comprising the following components in percentage by mass: 3.2-3.6wt% ofC, 0.3-0.7wt% of Si, 0.5-1.0wt% of Mn, 16-20wt% of Cr, 0.1-0.4wt% of Ni, 0.2-0.5wt% of Mo, 0.6-1.1wt% of W, 0.15-0.3wt% of V, 0.02-0.05wt% of Ti and the balance Fe and inevitable impurities. According to the high-hardness wear-resistant cast iron, carbon, silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium and titanium elements are added into the cast iron, and the contents of the carbon, silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium and titanium elements are controlled; tungsten and molybdenum are compounded and added to obtain a hard martensite austenite alloy matrix, so that the hardness and the wear resistance of the alloy are improved; and the vanadium and titanium elements refine the carbide size, so that castings with uniform performance areprepared, and therefore, the cast iron with high hardness and good wear resistance is realized.

Description

technical field [0001] The invention relates to metal materials, in particular to a high-hardness wear-resistant cast iron and a preparation method thereof. Background technique [0002] Ball mills are widely used in mining, metallurgy, cement production and other industries. They mainly use the high-speed rotating hammer to collide with the material to crush the material. The hammer is the key part and the part that is most prone to wear. At present, high-chromium cast iron is widely used in the industry to prepare hammer heads. However, due to the low hardness and poor wear resistance of the hammer head material, the hammer head is often severely worn, and even the surface peels off, which increases material consumption and increases manufacturing costs. At the same time Also reduces production efficiency. [0003] In order to increase the hardness of the existing wear-resistant cast iron, the content of Cr will be increased, and Cr will combine with Fe and C in the matri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C37/10C22C37/08C22C33/08
CPCC22C33/08C22C37/08C22C37/10
Inventor 崔崇亮田野陈艳飞陈大辉朱鸿磊刘永强李冬梅聂景江
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com