Heat-resisting and wear-resisting alloy steel material for drill bits and preparation method thereof

An alloy steel and heat-resistant technology, applied in the field of alloy materials, can solve the problems that the hardness, wear resistance, toughness and other properties of the drill bit cannot be balanced, and the blade is easy to wear and break, so as to achieve good toughness, not easy to break, reduce brittle effect

Inactive Publication Date: 2014-05-28
MAANSHAN HENGYI MACHINERY MFG
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Problems solved by technology

[0003] At present, the drill materials are mainly high-speed steel and cemented carbide. These two alloys have high hardness, wear resistance, good red hardness, and maintain a certain degree of toughness. However, during the use of

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Example Embodiment

[0014] A heat-resistant and wear-resistant alloy steel material for drill bits. The chemical element composition and its mass percentage are: carbon 2.0-2.3, chromium 9.6-9.9, tungsten 1.4-1.6, molybdenum 2.0-2.3, cobalt 6.5-6.7, manganese 1.2-1.3, titanium 0.4-0.6, Be1.1-1.3, La0.03-0.05, Ho0.16-0.19, the balance is iron and other inevitable impurities.

[0015] The production method of the heat-resistant and wear-resistant alloy steel material for drill bits is:

[0016] (1) Prepare pig iron and scrap iron as the source of iron matrix in a ratio of 1:0.5, add the pig iron into the furnace to melt, perform desulfurization, deoxidation, refining with a refining agent, adding alloy components for alloying, and then adding scrap iron to melt , Add refining agent for secondary refining, detect and adjust the content of chemical elements to qualified, casting, post-casting heat treatment, etc.;

[0017] (2) The batch sequence of adding alloying elements to the furnace during the alloyin...

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Abstract

The invention relates to a heat-resisting and wear-resisting alloy steel material for drill bits. The alloy steel material comprises the following chemical element constituents by mass percent: 2.0 to 2.3 percent of carbon, 9.6 to 9.9 percent of chromium, 1.4 to 1.6 percent of tungsten, 2.0 to 2.3 percent of molybdenum, 6.5 to 6.7 percent of cobalt, 1.2 to 1.3 percent of manganese, 0.4 to 0.6 percent of titanium, 1.1 to 1.3 percent of Be, 0.03 to 0.05 percent of La, 0.16 to 0.19 percent of Ho, and the balance of iron and other inevitable impurities. The cobalt, the tungsten and the molybdenum are added to alloy steel for the drill bits, provided by the invention, so that hardness and red hardness are increased; through adding the La, the Ho, the Be and the titanium, the hardness and the wear resistance of alloy are increased, at the same time, favorable toughness is kept, and the alloy steel material has favorable corrosion resistance. The alloy steel material is used for manufacturing deep hole drills, long drill bits and the like, the alloy steel material is not easy to break, the service life of the alloy steel material is long, and the cost of the alloy steel material is lower than that of high-speed steel.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a heat-resistant and wear-resistant alloy steel material for a drill bit and a preparation method thereof. Background technique [0002] Electric drill is a widely used electric tool, which is widely used in construction, processing and other fields. The main principle of the electric drill is to drive the operating device through the rotation of the motor, so that the drill bit scrapes the surface of the object to penetrate the object. The drill bit is one of the essential components of the electric drill. [0003] At present, the drill materials are mainly high-speed steel and cemented carbide. These two alloys have high hardness, wear resistance, good red hardness, and maintain a certain degree of toughness. However, during the use of electric drills, they often break, and the blades are easy to wear or bend. It needs to be replaced frequently, mainly because the hardness, wear...

Claims

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Application Information

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IPC IPC(8): C22C38/30C22C33/04C21D6/00
CPCY02P10/20
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
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