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High-speed steel for high-toughness high-abrasion resistance hobbing cutter and preparation method thereof

A high-speed steel and high wear-resistant technology, which is applied in the field of high-speed steel for high-toughness and high-wear-resistant hobs and its preparation, can solve the problems of high cost, reduced gap between cutting speed and cutting life, etc., to achieve improved wear resistance, Effect of improving grindability

Active Publication Date: 2012-10-24
HEYE SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the development of the coating, the gap between cutting speed and cutting life becomes smaller, and the carbide carbon particles of traditional high-speed steel are larger than those of powder steel. When the requirements for secondary sharpening are very high, powder metallurgy high-speed steel is irreplaceable, but its cost is much higher than that of traditional high-speed steel, so traditional high-performance high-speed steel will still be the main hob material for a long time in the future

Method used

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  • High-speed steel for high-toughness high-abrasion resistance hobbing cutter and preparation method thereof
  • High-speed steel for high-toughness high-abrasion resistance hobbing cutter and preparation method thereof
  • High-speed steel for high-toughness high-abrasion resistance hobbing cutter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0033] A high-toughness and high-wear-resistant high-speed steel for hobs, which consists of the following chemical components in weight percentages:

[0034] C: 1.08, Si: 0.25, Cr: 3.95, Mo: 4.85, V: 2.60, W: 5.80, Co: 1.93, Mn: 0.32, P≤0.03, S≤0.01, the balance is iron and impurities.

[0035] The preparation method of the above-mentioned high-toughness and high-wear-resistance high-speed steel for hobs is carried out according to the following steps:

[0036] (1) The high-toughness and high-resistance hob grinding high-speed steel containing the above chemical components is prepared into electroslag steel ingots by means of intermediate frequency smelting + external refining + vacuum degassing + electroslag remelting; among them, external refining and desulfurization When the molten steel is stirred with an inert gas in a vacuum state; the refining outside the furnace is desulfurized to a sulfur content S≤0.015, and the molten steel is stirred with an inert gas in a vacuum ...

Embodiment 2-8

[0045] The high-toughness and high-wear-resistant high-speed steel for hobs involved in Examples 2-8, the weight percentage of its chemical composition is shown in Table 1, and it is prepared by the corresponding preparation method of the embodiment, and the step parameters involved As shown in Table 2, the corresponding performance test situation of each embodiment is as shown in Table 3:

[0046]

[0047]

[0048]

[0049] According to the national standard GB / T230, GB / T14452, GB / T229 and other standards, as shown in the table below:

[0050]

[0051] Therefore, it can be seen from Table 3 that the hardness, flexural strength and impact toughness of the high-toughness and high-wear-resistant high-speed steel for hobs all meet the national standards.

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Abstract

The invention discloses high-speed steel for a high-toughness high-abrasion resistance hobbting cutter and a preparation method thereof. Compared with chemical components of traditional high-performance high-speed steel, the usage of noble metal cobalt is reduced, the content of carbon and vanadium with low prices are correspondingly added, so that the grain tissue of the high-speed steel can be refined, the hardenability can be increased, and the production cost can be reduced on the premise of guaranteeing corresponding functions of high toughness and high-abrasion resistance; and by utilizing the method for preparing the high-toughness high-abrasion resistance high-speed steel provided by the invention, the content of N is controlled to be lower than 150ppm, the formation of large-particle carbide is weakened, and the grindability is improved. The method for preparing the high-speed steel can be used for preparing hobbing cutter and gear and other rotary elements in automobile and mechanical engineering industries.

Description

technical field [0001] The invention relates to a novel high-speed steel, in particular to a high-toughness and high-wear-resistant high-speed steel for hobs and a preparation method thereof. Background technique [0002] High-speed steel is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or front steel. Due to its good process performance and good combination of strength and toughness, high-speed steel is mainly used to manufacture complex thin blades and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies. [0003] The current general-purpose high-speed steel M2 can no longer meet the usual use requirements. The hob material mainly uses high-performance high-speed steel such as M42 and M35, but because it contains a large amount of precious alloy Co, the production cost increases. Among them, the high-speed steel M35 contains The chemical composition is calcu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/30C22C33/04C21D8/00
Inventor 吴立志郑伟张占普孙宗林
Owner HEYE SPECIAL STEEL
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