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A kind of high-quality steel for forging bucket teeth and its preparation method

A high-quality technology for forging, used in manufacturing tools, metal rolling, metal rolling, etc., can solve problems such as difficulty in cutting raw materials, reduce the number and level, improve composition segregation, and shorten service life.

Active Publication Date: 2022-04-08
ZENITH STEEL GROUP CORP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, solve the problem of difficulty in cutting raw materials, and improve the dispersion of the hardness distribution of bucket teeth, and try to avoid the negative impact of uneven hardness

Method used

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  • A kind of high-quality steel for forging bucket teeth and its preparation method
  • A kind of high-quality steel for forging bucket teeth and its preparation method
  • A kind of high-quality steel for forging bucket teeth and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0087] The surface hardness of the hot-rolled materials produced in Examples 1# to 5# is 280 to 330HBW. The hot-rolled materials within the hardness range can not only ensure the mechanical properties, but also solve the difficulty of blanking, serious wear of the saw blade, and poor sawing. Practical issues such as moving steel.

[0088] Processing the above-mentioned rolled material into a short ratio Standard sample blank, after heat treatment, the sample is prepared to measure the longitudinal mechanical properties of steel, heat treatment system: 900±15°C quenching (oil), holding time 50min, 200±10°C tempering (water, air), holding time 4 Hour.

[0089] The mechanical property of table 10 embodiment of the present invention

[0090]

[0091]

[0092]The optimized design of the components ensures better strength and toughness. Since the bucket teeth are in contact with high-hardness objects during the excavation process, the requirements for the impact toughness a...

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Abstract

The invention belongs to the technical field of steel for bucket teeth, and relates to a high-quality steel for bucket teeth for forging and a preparation method thereof. 1.25%, P≤0.020%, S≤0.010%, Cr: 2.05%~2.15%, Ti: 0.020%~0.030%, Mo: 0.23%~0.28%, Al: 0.020%~0.045%, V: 0.03%~ 0.05%. In order to solve problems such as difficulty in blanking and poor dispersion of hardness distribution of bucket teeth, through the design of steel composition and optimization of production process parameters, the actual problem of difficult blanking of hot-rolled materials (sawing is not fixed, waste saw blade) has been successfully solved for users, and The obtained product steel has high strength, high hardenability, and high purity, and the hardness of the same section of the finished bucket teeth is more uniform, which significantly improves the service life of the bucket teeth.

Description

technical field [0001] The invention relates to the technical field of metallurgy, belongs to alloy steels, and relates to steel for bucket teeth and a preparation method thereof. Background technique [0002] Bucket teeth are the key components of excavators, which significantly affect the working efficiency of excavators. The bucket teeth are in direct contact with materials such as ore, sand, rock, etc., and when they contact materials, they not only bear the impact but also bear the bending moment. During the service process, the tip of the bucket tooth is subjected to strong impact and sliding abrasive wear, and various furrows and deformations often appear on the surface of the tip, resulting in surface wear or shedding. Therefore, it is required that the bucket teeth must have sufficient wear resistance, strength and toughness in order to be durable. Among them, there are higher and higher requirements for steel for forged bucket teeth. Especially for harsh weather...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C38/06C22C38/22C22C38/24C22C38/28C22C38/34B22D11/16C21C7/00C21C7/10C22C33/06B21B1/02B21B43/00
CPCC22C38/04C22C38/002C22C38/34C22C38/28C22C38/22C22C38/06C22C38/24C22C33/06C21C7/0006C21C7/10B22D11/16B21B1/026B21B43/00B21B2261/20Y02P10/20
Inventor 沙鹏飞徐乐钱庞卓纯万文华叶玉奎
Owner ZENITH STEEL GROUP CORP CO LTD
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