Jet high-speed steel without annular segregation and with secondary hardening function and manufacturing method for jet high-speed steel

A technology of secondary hardening and manufacturing method, applied in metal processing equipment and other directions, can solve problems such as hindering the application and development of spray-deposited high-speed steel

Pending Publication Date: 2022-01-11
TIANGONG AIHE SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above two problems have seriously hindered the application and development of spray-deposited high-speed steel. In order to meet the requirements of high-performance high-speed steel, it is urgent to design the chemical composition and manufacturing process of new spray-formed high-speed steel, and solve the above two technologies at the same time. problem

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  • Jet high-speed steel without annular segregation and with secondary hardening function and manufacturing method for jet high-speed steel
  • Jet high-speed steel without annular segregation and with secondary hardening function and manufacturing method for jet high-speed steel
  • Jet high-speed steel without annular segregation and with secondary hardening function and manufacturing method for jet high-speed steel

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Embodiment 1

[0043] This embodiment provides a sprayed high-speed steel without annular segregation and secondary hardening, and its components include: carbon: 1.70%, molybdenum: 3.00%, chromium: 6.00%, vanadium: 8.00%, niobium: 2.50%, silicon: 0.20~0.35%, manganese: 0.50~0.90%, sulfur: ≤0.040%, phosphorus: ≤0.040%, oxygen: 0.005~0.015%, nitrogen: 0.030~0.040%, the remainder is iron and unavoidable Impurities, the main metal element components except iron are added in the form of alloy, and the alloy form is one or more of ferromolybdenum, ferrochrome, ferrovanadium and ferroniobium.

[0044] The process steps are as follows:

[0045] Step 1: The ingredients are configured according to the above components for smelting raw materials;

[0046] Step 2: Intermediate frequency induction melting:

[0047] (1) Melting by induction heating in a 4-ton intermediate frequency furnace, the inclination angle of the crucible is -15°~105°, adding industrial pure iron and ferromolybdenum in sequence, ...

Embodiment 2

[0064] This embodiment provides a sprayed high-speed steel without annular segregation and secondary hardening and its manufacturing method, its components include: carbon: 1.80%, tungsten: 6.00%, molybdenum: 5.00%, chromium: 4.00% %, vanadium: 6.00%, niobium: 2.00%, silicon: 0.20~0.35%, manganese: 0.50~0.90%, sulfur: ≤0.040%, phosphorus: ≤0.040%, oxygen: 0.005~0.015%, nitrogen: 0.030~0.040 %, the remainder is iron and unavoidable impurities. The main metal element components are all added in the form of alloy except iron. one or more species.

[0065] The process steps are as follows:

[0066] Step 1: The ingredients are configured according to the above components for smelting raw materials;

[0067] Step 2: Intermediate frequency induction melting:

[0068] (1) Induction heating and melting in a 4-ton intermediate frequency furnace, the inclination angle of the crucible is -15°~105°, adding industrial pure iron, tungsten iron, and molybdenum iron in sequence, until the f...

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Abstract

The invention discloses jet high-speed steel without annular segregation and with a secondary hardening function and a manufacturing method for the jet high-speed steel and relates to a component design and a preparation technology for jet deposition high-vanadium niobium-contained wear-resistant high-speed steel. The jet high-speed steel comprises the following components in percentage by mass: 0.80-2.00 percent of carbon, 0.00-9.00 percent of tungsten, 1.00-9.00 percent of molybdenum, 4.00-6.00 percent of chromium, 3.00-10.00 percent of vanadium, 0.50-3.00 percent of niobium, 0.20-0.35 percent of silicon, 0.50-0.90 percent of manganese, smaller than or equal to 0.040 percent of sulfur, smaller than or equal to 0.040 percent of phosphorus, 0.005-0.015 percent of oxygen, 0.030-0.040 percent of nitrogen and the balance of iron and inevitable impurities. The process comprises the following steps of step 1, preparing smelting a raw material according to the components; step 2, conducting medium-frequency induction melting; step 3, conducting atomization spray deposition; step 4, conducting forging; and 5, conducting heat treatment.

Description

technical field [0001] The invention belongs to the field of spray deposition, powder metallurgy and rapid solidification high-speed steel, in particular to a spray high-speed steel without ring segregation and secondary hardening and a manufacturing method thereof. Background technique [0002] High-speed steel is a kind of high-alloy ledeburite steel containing more than 20% alloy elements. It is widely used in cutting due to its high hardness, excellent wear resistance, red hardness and high-temperature hardness, and good toughness. In the field of processing, it occupies a major position in multi-edged tools (especially complex and precision tools), cutting tools subjected to shock and vibration. Its composition is high-alloy martensite structure, incompletely dissolved primary carbides and secondary precipitated carbides. In order to avoid the shedding of carbides during wear and withstand the high temperature generated during cutting, the martensitic structure must ha...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/26C22C38/36B21J5/00C21D6/00C22C33/06
CPCC22C38/36C22C38/22C22C38/24C22C38/26C22C38/02C22C38/04C22C38/001C22C33/06B21J5/002C21D6/002C21D6/005C21D6/008
Inventor 余挥朱泽峰廖俊吴锁军徐辉霞吴建忠
Owner TIANGONG AIHE SPECIAL STEEL
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