Nickel-chromium alloy powder-coated steel bar manufacturing method

A technology of nickel-chromium alloy powder and manufacturing method, which is applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of high manufacturing cost of steel bars, shortening of service life of steel bars, and rising prices of iron ore, etc. Achieve the effect of increasing production efficiency, increasing strength and increasing strength

Active Publication Date: 2014-03-19
TIANSHUN GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when using steel bars, considering that the environment in which steel bars are used is extremely harsh, in many cases there are corrosive gases or liquids, which can easily cause steel bars to be corroded, resulting in rust, which greatly reduces the service life of steel bars, and has caused certain hidden dangers, and in the pri

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] This embodiment provides a method for manufacturing nickel-chromium alloy powder-coated steel bars. The method is carried out in the following steps:

[0030] ⑴It is equipped with nickel-chromium alloy powder. The weight percentage composition of nickel-chromium alloy powder is: Re: 0.25%, Ni: 46%, Cr: 16%, Si: 1.6%, S: 0.25%, C: 0.2%, Fe: 10 %, Mn: 0.9%; composite rare earth: 1%;

[0031] The composite rare earth contains the following components by weight percentage: La: 25%, Y: 10%, Sc: 7%, Gd: 3%, Sm: 5%, Pr: 10%;

[0032] ⑵Send the steel bars into a heating furnace to heat to 900℃, and then through the online first cooling process, use water cooling to cool the steel bars to 400℃ at a cooling rate of 18℃ / s, and then cool them to 50℃ with water or quenching liquid in the quenching device , And then heated to 600℃ through tempering heating furnace for tempering, and then through the second cooling process: water cooling and air cooling are combined, first...

Example Embodiment

[0037] Example 2

[0038] This embodiment provides a method for manufacturing nickel-chromium alloy powder-coated steel bars. The method is carried out in the following steps:

[0039] ⑴It is equipped with nickel-chromium alloy powder. The weight percentage composition of nickel-chromium alloy powder is: Re: 1.2%, Ni: 50%, Cr: 20%, Si: 2.6%, S: 0.32%, C: 0.8%, Fe: 15 %, Mn: 5%, composite rare earth: 1.5%;

[0040] The composite rare earth contains the following components by weight percentage: La: 30%, Y: 12%, Sc: 10%, Gd: 4%, Sm: 6%, Pr: 12%;

[0041] ⑵Send the steel bars into the heating furnace to heat to 950℃, and then through the online first cooling process, use water cooling to cool the steel bars to 450℃ with a cooling rate of 20℃ / s, and then cool them to 80℃ with water or quenching liquid in the quenching device , And then heated to 650℃ through a tempering furnace for tempering, and then through the second cooling process: water cooling and air cooling are combined, first ...

Example Embodiment

[0046] Example 3

[0047] This embodiment provides a method for manufacturing nickel-chromium alloy powder-coated steel bars, which is carried out in the following steps:

[0048] ⑴ Configure nickel-chromium alloy powder, the weight percentage of nickel-chromium alloy powder composition is: Re: 2.2%, Ni: 54%, Cr: 31%, Si: 3.8%, S: 0.46%, C: 1.4%, Fe: 5 %, Mn: 8%, composite rare earth: 2%;

[0049] The composite rare earth contains the following components by weight percentage: La: 35%, Y: 15%, Sc: 12%, Gd: 5%, Sm: 7%, Pr: 20%;

[0050] ⑵Send the steel bars into a heating furnace to heat to 1000℃, and then through the online first cooling process, use water cooling to cool the steel bars to 480℃ at a cooling rate of 20℃ / s, and then cool them to 100℃ with water or quenching liquid in the quenching device , And then heated to 700 ℃ tempering in a tempering heating furnace, and then through the second cooling process: using water cooling and air cooling, first use water cooling at a co...

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PUM

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Abstract

The present invention discloses a nickel-chromium alloy powder-coated steel bar manufacturing method, which is characterized in that (1) the chemical components of the nickel-chromium alloy powder comprise, by weight, 0.2-3.3% of Re, 45-55% of Ni, 16-33% of Cr, 1.5-5.0% of Si, 0.25-0.5% of S, 0.2-1.5% of C, 10-16% of Fe, 0.8-10% of Mn, and 1-2% of composite rare earth; (2) the smelted steel bar is conveyed into a heating furnace to heat to achieve a temperature of 900-1000 DEG C; (3) the nickel-chromium alloy powder mixed according to a certain ratio is uniformly sprayed on the steel bar surface through a spraying gun; (4) the heated steel bar is conveyed into a quenching device; (5) the quenched steel bar is heated through a tempering heating furnace to achieve a temperature of 450-480 DEG C; and (6) the tempered steel bar is naturally cooled to achieve a room temperature. According to the invention, the nickel-chromium alloy is coated the steel bar surface so as to increase the wear resistance.

Description

technical field [0001] The invention relates to a heat treatment method for the surface of a metal material, in particular to a method for manufacturing a nickel-chromium alloy powder-coated steel bar. Background technique [0002] At present, when using steel bars, considering that the environment in which steel bars are used is extremely harsh, there are corrosive gases or liquids in many cases, which can easily cause steel bars to be corroded and rusted, greatly reducing the service life of steel bars, and causing certain damage. Potential safety hazards, and in the prior art, such as Chinese patent CN101717898A discloses a HRB500E high-strength anti-seismic steel bar containing boron-nitrogen microalloys, but these technologies need to add expensive alloys to adjust the content of trace elements in molten steel, and the price of iron ore is increasing year by year As a result, the manufacturing cost of the entire steel bar remains high. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): C22C19/05B22F1/00C21D1/18C23C4/06C23F17/00C23C4/08
Inventor 吴海洋姚圣法
Owner TIANSHUN GROUP
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