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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 prior art, such as Chinese patent CN101717898A discloses a HRB500E high-strength seismic steel bar containing boron-nitrogen microalloys, but these technologies need to add expensive Alloys adjust the content of trace elements in molten steel, and the price of iron ore has risen year by year, resulting in high manufacturing costs for the entire steel bar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of manufacturing method of nickel-chromium alloy powder cladding steel bar provided by the present embodiment, the method is carried out according to the following steps:

[0030] (1) Configure nickel-chromium alloy powder, the weight percentage 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%; compound rare earth: 1%;

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

[0032] (2) Send the steel bar into the heating furnace to heat to 900°C, and then through the first online cooling process, use water cooling to cool the steel bar to 400°C at a cooling rate of 18°C / s, and then cool it to 50°C in the quenching device with water or quenching liquid , and then heated to 600°C in a tempering furnace, and then passed through the second cooling process: a combination of water cooling and air cooling, first u...

Embodiment 2

[0038] A kind of manufacturing method of nickel-chromium alloy powder cladding steel bar provided by the present embodiment, the method is carried out according to the following steps:

[0039] (1) Configure nickel-chromium alloy powder, the weight percentage 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%, compound rare earth: 1.5%;

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

[0041] ⑵Send the steel bar into the heating furnace and heat it to 950°C, then through the first online cooling process, use water cooling to cool the steel bar to 450°C at a cooling rate of 20°C / s, and then cool it to 80°C in the quenching device with water or quenching liquid , and then heated to 650°C in a tempering furnace for tempering, and then through the second cooling process: using a combination of water cooling and air coolin...

Embodiment 3

[0047] A kind of manufacturing method of nickel-chromium alloy powder cladding steel bar provided by the present embodiment, the method is carried out according to the following steps:

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

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

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

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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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