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Method for producing low-carbon steel alloy composition, powder, and workpiece containing same

A technology of alloy composition and manufacturing method, applied in the field of workpiece manufacturing, can solve the problems affecting the mechanical strength and toughness of carbon steel materials, and the volatilization of Mn

Active Publication Date: 2021-01-15
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional low-carbon steel materials contain a relatively large amount of manganese (Mn), and Mn is volatile after laser melting, which directly affects the mechanical strength and toughness of carbon steel materials

Method used

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  • Method for producing low-carbon steel alloy composition, powder, and workpiece containing same
  • Method for producing low-carbon steel alloy composition, powder, and workpiece containing same
  • Method for producing low-carbon steel alloy composition, powder, and workpiece containing same

Examples

Experimental program
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Effect test

Embodiment 1～6

[0022] According to the weight ratio of Cr, C, Si and Fe in Table 1, the vacuum melting method is used for melting, and the frequency of the high-frequency heater (V-UTMOST, SPZ-110) is 1-20KHz, and the temperature is 1400-1600°C. Melting, and then using gas spray technology to obtain the powder of the low-carbon steel alloy composition, using a scanning electron microscope (SEM, JEOL-6330) to observe that the powder is spherical as figure 1 shown. The particle size distribution analysis was carried out using a laser particle size analyzer (Malvern, Mastersizer 2000E), and the obtained particle sizes are shown in Table 1. It should be noted that those with ordinary knowledge in the technical field of the disclosed content of the present invention will understand that based on the selection of starting materials for each element, in addition to the predetermined elements and their weight percentages in the prepared composition, there are still There may be traces of other impu...

Embodiment 7～12

[0027] The powders of Examples 1-6 were melted and formed by laser lamination (temperature 2500-3000°C) to obtain workpieces 1-6 respectively. The laser power (Laser Power) used was 195W / Scan, Scan rate (Scan Rate) is 750mm / sec.

[0028] The tensile strength (YS) of the above-mentioned workpieces 1 to 6 (tested by Gleeble3500 at room temperature, according to ASTM E8 specification), yield strength (UTS) (tested by Gleeble3500 at room temperature, according to ASTM E8 specification), Elongation (EL) (tested with Gleeble3500 for material elongation, according to ASTM E8 specification), average hardness (tested with Vickers hardness machine for Hv standard hardness, according to ASTM E18 specification) are shown in Table 2.

[0029] Table 2

[0030]

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Abstract

The invention provides a method for manufacturing a low-carbon steel alloy composition, powder and a workpiece containing the same. The low-carbon steel alloy composition comprises: 98.5-99.7 parts by weight of iron, 0.1-0.3 parts by weight of carbon, 0.1-0.6 parts by weight of silicon, and 0.15-0.45 parts by weight of chromium. The above alloy composition is made into powder by gas spraying, and then the powder is melted by laser lamination to complete the alloy workpiece.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a method for manufacturing a low-carbon steel alloy composition and a workpiece containing the same. Background technique [0002] Additive manufacturing is known as the third industrial revolution, which brings new challenges and changes to industries such as molds, aerospace components, and tools. Metal additive manufacturing can not only reduce the production process of traditional metal industries, but also semi-finished products have near-net shape (near-net shape), and also has the excellent characteristics of unrestricted product geometry. At present, the industrial mold industry is still dominated by subtractive manufacturing. However, compared with traditional manufacturing processes, additive manufacturing is applied to the production of mold cores / The mold has the advantage of simplifying the complex process, can manufacture workpieces with complex geometry,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/18C22C38/04B22F1/00B22F9/08B22F3/105B33Y70/00B22F1/06
CPCB22F9/082C22C38/02C22C38/04C22C38/18B22F10/00B22F10/36B22F10/28B33Y70/10B22F1/00B22F1/06C22C33/0257B33Y10/00Y02P10/25
Inventor 翁鋕荣杨智超周育贤王顺辉
Owner IND TECH RES INST