Alloy material for crusher hammerhead and preparation method thereof

A technology of alloy materials and crushers, applied in the field of wear-resistant metal materials, can solve the problems of high manganese steel hammer heads such as non-wear resistance, short service life, brittle fracture, etc., achieve reduction of inclusion oxides, increase yield, and low cost Effect

Inactive Publication Date: 2014-03-12
MAANSHAN HENGYI MACHINERY MFG
View PDF1 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many types of hammer head materials, the most commonly used is high manganese steel, initially because of its relatively high hardness and wear resistance, but now people find that this is not the case. In some cases, high manganese steel hammer heads are not wear-resistant and have a short service life. , the reason is that high manganese steel can only produce a high hardness surface hardened layer under the condition of large impact force, but it is not wear-resistant under the condition of small impact force; there is also medium manganese steel hammer head, because of its relatively High hardness and toughness, more durable when the impact force is not too large, and magnetic; high chromium cast iron hammer has excellent wear resistance, but poor toughness, prone to brittle fracture
All kinds of materials cannot achieve the ideal effect, so seeking reasonable materials, developing simple and practical processes, and saving resources and energy on the premise of ensuring the use requirements have become hot spots and difficulties in the field of wear-resistant materials.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] An alloy material for a hammer head of a crusher, which contains chemical element components and mass percentages: carbon 0.2-0.4, silicon 0.7-0.9, manganese 3.2-3.5, chromium 3.6-3.8, molybdenum 1.7-1.9, titanium 0.2- 0.5, Sb0.02-0.04, Lu0.01-0.02, Ga0.02-0.03, S≤0.05, P≤0.05, and the balance is iron.

[0014] The production method of the alloy material for the hammer head of the crusher is:

[0015] (1) Prepare pig iron and scrap iron as the source of iron matrix in a ratio of 1:1.5, put pig iron into the furnace for melting, perform desulfurization, deoxidation, use refining agent for one-time refining, add alloy components for alloying, and then add scrap iron to melt , adding refining agent for secondary refining, testing and adjusting the content of chemical elements to pass, casting, post-casting heat treatment, etc.;

[0016] (2) The order of batches of alloying elements added to the furnace during the alloying process is: (1) chromium, manganese; (2) silicon, ...

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
impact absorption energyaaaaaaaaaa
Login to view more

Abstract

The invention relates to an alloy material for a crusher hammerhead, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.7-0.9% of silicon, 3.2-3.5% of manganese, 3.6-3.8% of chromium, 1.7-1.9% of molybdenum, 0.2-0.5% of titanium, 0.02-0.04% of Sb, 0.01-0.02% of Lu, 0.02-0.03% of Ga, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using the low-carbon steel as the main material, the material has favorable toughness; the material contains the Sb, Lu, Ga and many other alloy elements, so that the alloy has high hardness, high wear resistance and high hot strength; and the material is suitable for a medium-size crusher and used for crushing ores with moderate hardness, the service life can be prolonged by 1 time or so as compared with high-chromium cast iron, and the cost is lower. When the refining agent is used for casting production, no pores can be generated on the casting surface, and the included oxide content is obviously lowered.

Description

technical field [0001] The invention relates to the field of wear-resistant metal materials, in particular to an alloy material for hammer heads of crushers and a preparation method thereof. Background technique [0002] There are many types of hammer head materials, the most commonly used is high manganese steel, initially because of its relatively high hardness and wear resistance, but now people find that this is not the case. In some cases, high manganese steel hammer heads are not wear-resistant and have a short service life. , the reason is that high manganese steel can only produce a high hardness surface hardened layer under the condition of large impact force, but it is not wear-resistant under the condition of small impact force; there is also medium manganese steel hammer head, because of its relatively High hardness and toughness, durable and magnetic when the impact force is not too large; high chromium cast iron hammer has excellent wear resistance, but poor to...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C33/04C21D6/00
Inventor 章功国王泾文段宗银李纯金陈超王淑妍张少伍王晓芬谢勇
Owner MAANSHAN HENGYI MACHINERY MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products