High-strength toughness low-alloy wear-resistant steel excavator bucket tooth and preparation method thereof

A high-strength and toughness technology for excavator bucket teeth, which is applied in the field of excavator bucket teeth, can solve the problems of insufficient impact force, work hardening, wear resistance cannot be fully exerted, and short life, and achieve reasonable organizational structure, good toughness, and improved The effect of impact resistance

Active Publication Date: 2017-07-28
GUILIN UNIV OF ELECTRONIC TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although high manganese steel has good toughness, under the working condition of low impact force, it cannot produce work hardening due to insufficient impact force, so that the wear resistance cannot be fully exerted and the service life is short.

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 1

[0029] The mass percentages of the components of the bainite / martensitic composite low-alloy wear-resistant steel used to prepare high-strength and toughness low-alloy wear-resistant steel excavator bucket teeth are: C:0.5, Si:1.0, Mn: 0.9, Cr :0.3, Mo:0.4, Cu:0.5, Re:0.25, P:0.01, S:0.01, and the rest are Fe and unavoidable impurities.

[0030] Melting with 1t alkaline induction furnace. The metal charge is pig iron for steelmaking, returned carbon steel, ferrosilicon, ferrochrome, ferromolybdenum, scrap copper, rare earth (Re, one or more of all rare earth elements), and the ferroalloy (ferrosilicon, ferrochrome , ferromolybdenum) and add after crushing, the particle size is 10-20mm, and the feeding is calculated according to the above formula. It is formed by lost foam casting, and the pouring temperature is 1560-1600°C. After pouring, when the casting is cooled to 800-900°C, remove the shell and air-cool to room temperature.

[0031] The obtained casting is heated up to ...

Embodiment 2

[0034] The mass percentages of the components of the bainite / martensitic composite low-alloy wear-resistant steel used to prepare high-strength and toughness low-alloy wear-resistant steel excavator bucket teeth are: C:0.6, Si:0.6, Mn: 1.2, Cr : 0.25, Mo: 0.5, Cu: 0.6, Re: 0.3, P: 0.01, S: 0.01, and the rest are Fe and unavoidable impurities.

[0035] Melting with 1t alkaline induction furnace. The metal charge is pig iron for steelmaking, returned carbon steel, ferrosilicon, ferrochrome, ferromolybdenum, scrap copper, rare earth (Re, one or more of all rare earth elements), and the ferroalloy (ferrosilicon, ferrochrome , ferromolybdenum) after being crushed and added, the particle size is 10-20mm, and the feeding is calculated according to the above formula. It is formed by lost foam casting, and the pouring temperature is 1560-1600°C. After pouring, when the casting is cooled to 800-900°C, remove the shell and air-cool to room temperature.

[0036] The obtained casting is ...

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

No PUM Login to view more

Abstract

The invention provides a high-strength toughness low-alloy wear-resistant steel excavator bucket tooth and a preparation method thereof. The preparation material is bainite / martensite multi-phase low-alloy wear-resistant steel, and the mass percentage of the composition is: C:0.40 ‑0.60, Si: 0.60‑1.2, Mn: 0.8‑1.2, Cr: 0.25‑0.35, Mo: 0.30‑0.50, Cu: 0.40‑0.60, Re: 0.2‑0.3, P: 0‑0.01, S: 0‑0.01 , and the rest are Fe and unavoidable impurities. The preparation method includes the following steps: 1) melting; 2) forming by lost foam casting; 3) air cooling to room temperature when the casting is cooled to 800-900°C after pouring; 4) heating the obtained casting to 820-860°C ℃ for austenitization; 5) Quenching; 6) Take it out when the surface of the casting is cooled to 200-320℃; 7) Immediately transfer the casting to a holding furnace at 260-330℃ for isothermal transformation of bainite, and then take it out air cooled. The obtained excavator bucket tooth has high surface hardness and good wear resistance, and the internal structure can ensure good toughness, and can absorb more impact energy when impacted, thereby improving impact resistance.

Description

technical field [0001] The invention relates to excavator bucket teeth, in particular to a high-strength toughness bainite / martensite composite low-alloy wear-resistant steel excavator bucket tooth and a preparation method thereof. Background technique [0002] Excavator is a multi-purpose earth-rock construction machine, which is mainly used for earth-rock excavation and loading, and can also perform land leveling, slope repairing, hoisting and other operations. To complete the same earthwork workload, using excavators consumes less energy than using loaders and bulldozers, and some earthwork constructions cannot be completed by loaders and bulldozers, so excavators are used in road construction such as roads and railways, and mining. It has been widely used in bridge construction, urban construction, airport port and water conservancy construction. With the rapid development of my country's economic construction, excavators are increasingly playing a huge role in national...

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 Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/18C22C38/12C22C38/16C21D1/18C21D1/20E02F9/28
CPCC21D1/18C21D1/20C21D2211/002C21D2211/008C22C38/005C22C38/02C22C38/04C22C38/12C22C38/16C22C38/18E02F9/285
Inventor 王荣高浩李新凯钟盛曲宾魏德强张晓媛
Owner GUILIN UNIV OF ELECTRONIC TECH
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap