High speed steel and productive technology thereof

A production process and technology for high-speed steel, applied in the field of high-speed steel and its production process, can solve the problems of complex powder metallurgy process, large size requirements of atomization device, low yield of powder metallurgy materials, etc. Abrasion resistance, the effect of reducing the cost of use

Inactive Publication Date: 2010-09-22
金文平
View PDF3 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of powder metallurgy is quite complicated, including: melting, atomization, screening, mixed batch, packaging, cold isostatic pressing, hot isostatic pressing, hot forging or hot rolling, contact packaging, heat treatment and other processes
During thes...

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High speed steel and productive technology thereof
  • High speed steel and productive technology thereof
  • High speed steel and productive technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] a, batching process: carry out batching according to the composition of the alloy described in table 1;

[0037]b. Melting process: Put the mixed ingredients into the vacuum induction furnace in the melting chamber of the atomization deposition equipment and heat to 100°C higher than the melting point of the alloy, and keep it warm for 20 minutes to make the composition and temperature of the high-speed steel melt in the induction furnace uniform Consistent, then pour the high-speed steel melt into the heated tundish at a speed of 3g / min, the temperature of the tundish is 100°C higher than the melting point of high-speed steel;

[0038] c. Atomization deposition process: In the physical and chemical chamber, N with a pressure of 2-3 MPa and a purity of >99.9% Wt 2 The gas passes through the atomizing nozzle to atomize the high-speed steel melt into molten droplets, and the molten droplets fly and deposit on the depositor rotating at a speed of 50 rpm to form a columnar ...

Embodiment 2

[0044] a, batching process: carry out batching according to the composition of the alloy shown in Table 1;

[0045] b. Melting process: Put the mixed ingredients into the vacuum induction furnace in the melting chamber of the atomization deposition equipment and heat to 130°C higher than the melting point of the alloy, and keep it warm for 12 minutes to make the composition and temperature of the high-speed steel melt in the induction furnace uniform Consistent, then pour the high-speed steel melt into the heated tundish at a speed of 4g / min, the temperature of the tundish is 130°C higher than the melting point of high-speed steel;

[0046] c. Atomization deposition process: In the physical and chemical chamber, N with a pressure of 2-3 MPa and a purity of >99.9% Wt 2 The gas passes through the atomizing nozzle to atomize the high-speed steel melt into molten droplets, and the molten droplets fly and deposit on the depositor rotating at a speed of 60 rpm to form a columnar dep...

Embodiment 3

[0052] a, batching process: carry out batching according to the composition of alloy shown in Table 1;

[0053] b. Melting process: Put the mixed ingredients into the vacuum induction furnace in the melting chamber of the atomization deposition equipment and heat to 160°C higher than the melting point of the alloy, and keep it warm for 14 minutes to make the composition and temperature of the high-speed steel melt in the induction furnace uniform Consistent, then pour the high-speed steel melt into the heated tundish at a speed of 6g / min, the temperature of the tundish is 170°C higher than the melting point of high-speed steel;

[0054] c. Atomization deposition process: In the physical and chemical chamber, N with a pressure of 2-3 MPa and a purity of >99.9% Wt 2 The gas passes through the atomizing nozzle to atomize the high-speed steel melt into molten droplets, and the molten droplets fly and deposit on the depositor rotating at a speed of 50-90 rpm to form a columnar depo...

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 discloses high speed steel and a productive technology thereof. The high speed steel comprises the following chemical components by weight percent: 1.0 to 1.4 percent of C, 3.8 to 4.2 percent of Cr, 4.8 to 5.2 percent of Mo, 6.3 to 6.5 percent of W, 8.2 to 8.4 percent of Co, 2.2 to 3.0 percent of V, 0.4 to 1.5 percent of Nb and 0.2 to 0.4 percent Si, less than or equal to 0.03 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.4 percent of Mn, and the balance of Fe and inevitable impurities. The invention creatively introduces atomization deposition technology into the high speed steel preparation process, overcomes the defects of coarse crystalline grains and severe segregation of the traditional casted blank, abandons the disadvantages of various work procedures and high energy consumption of powder metallurgy technology, has the advantage of the powder metallurgy technology and consequently improves the various performances of metal material greatly. The advantage of the invention is obvious and outstanding.

Description

technical field [0001] The invention belongs to high-speed steel among metal materials and its production process. Background technique [0002] High-speed steel is a high-alloy steel containing a large amount of carbon (C), tungsten (W), molybdenum (Mo), chromium (Cr), vanadium (V) and other elements y. It has high thermal hardness after heat treatment. When the cutting temperature is as high as 600 When the temperature is above ℃, the hardness still does not decrease significantly. The cutting speed of the tool made by it can reach more than 60 meters per minute, and its hardness is 63-65HRC. [0003] There are two manufacturing methods for high-speed steel, one is traditional ingot casting, and the other is manufacturing by powder metallurgy. Ingot casting is usually divided into two types: secondary refining (EAF+LF+VD) or electroslag remelting (ESR). In the above method, due to the slow cooling of the molten metal, the uneven segregation of the alloy and the coarseness...

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
IPC IPC(8): C22C38/30C22C33/02C21D1/18C21D1/26
Inventor 金文平
Owner 金文平
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