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Reinforcing steel bar used for vehicles

A technology for steel bars and automobiles, applied in the field of steel bars, can solve the problems of steel bar strength, corrosion resistance, poor high temperature resistance, corrosion, steel breakage, etc., and achieve the effect of increasing beauty, reducing production costs, and increasing strength

Inactive Publication Date: 2017-05-10
SUZHOU NIUDONG PRECISION MFG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the automobile industry, the standardization of auto parts has also promoted the rapid development of the automobile industry. The utilization rate of steel bars for automobiles is getting higher and higher, but the strength, corrosion resistance and high temperature resistance of steel bars are getting worse and worse. There are safety issues of broken steel bars and corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of steel bar for automobile provided by the present embodiment, the preparation method of steel bar for automobile is carried out according to the following steps:

[0037] (1) configure nickel-cobalt alloy powder, the weight percent composition of the nickel-cobalt alloy powder is: Ti: 0.2%, Ni: 33%, Co: 16%, Si: 2.5%, S: 0.15%, C: 0.02%, Mn : 0.7%, the balance is Fe;

[0038] (2) Send the steel bar into the heating furnace to heat to 600°C, then use water cooling to cool the steel bar to 400°C at a cooling rate of 18°C / s, and then cool it to below 100°C with water or quenching liquid in the quenching device, and then heat it through tempering Heat the furnace to 600°C for tempering, then use oil cooling to water-cool the steel bars to 390°C at a cooling rate of 8°C / s, then air-cool to 250°C, keep the temperature for 5 hours, and then air-cool to room temperature;

[0039] (3) Send the tempered steel bar into the thermal spraying equipment, spray the nickel-cob...

Embodiment 2

[0044] A kind of steel bar for automobile provided by the present embodiment, the preparation method of steel bar for automobile is carried out according to the following steps:

[0045] (1) configure nickel-cobalt alloy powder, the weight percent composition of the nickel-cobalt alloy powder is: Ti: 0.5%, Ni: 35%, Co: 18%, Si: 2.8%, S: 0.17%, C: 0.05%, Mn : 0.9%, the balance is Fe;

[0046] ⑵Send the steel bar into the heating furnace and heat it to 670°C, then use water cooling to cool the steel bar to 480°C at a cooling rate of 20°C / s, then cool it to below 100°C in the quenching device with water or quenching liquid, and then heat it through tempering Heat the furnace to 700°C for tempering, then use oil cooling to water-cool the steel bars to 410°C at a cooling rate of 10°C / s, then air-cool to 280°C, keep the temperature for 8 hours, and then air-cool to room temperature;

[0047] (3) Send the tempered steel bar into the thermal spraying equipment, spray the nickel-cobal...

Embodiment 3

[0052] A kind of steel bar for automobile provided by the present embodiment, the preparation method of steel bar for automobile is carried out according to the following steps:

[0053] (1) configure nickel-cobalt alloy powder, the weight percent composition of the nickel-cobalt alloy powder is: Ti: 0.3%, Ni: 34%, Co: 17%, Si: 2.6%, S: 0.16%, C: 0.03%, Mn : 0.8%, the balance is Fe;

[0054] (2) Send the steel bar into the heating furnace to heat to 650°C, then use water cooling to cool the steel bar to 420°C at a cooling rate of 19°C / s, then cool it to below 100°C in the quenching device with water or quenching liquid, and then heat it through tempering Heat the furnace to 650°C for tempering, then use oil cooling to water-cool the steel bars to 395°C at a cooling rate of 9°C / s, then air-cool to 270°C, keep warm for 6 hours, and then air-cool to room temperature;

[0055] (3) Send the tempered steel bar into the thermal spraying equipment, spray the nickel-cobalt alloy powde...

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PUM

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Abstract

The invention discloses a reinforcing steel bar used for vehicles. A preparation method for the reinforcing steel bar used for vehicles comprises the following steps: (1) preparing nickel-cobalt alloy powder; (2) sending the reinforcing steel bar into a heating furnace to be heated to 600-670DEG C, and carrying out heat treatment; (3) sending the reinforcing steel bar subjected to tempering into thermal spraying equipment, evenly spraying the nickel-cobalt alloy powder on the surface of the reinforcing steel bar through a spray gun, entering the heating furnace to be quickly heated to 800-850DEG C, and keeping the temperature for 30-40 seconds, wherein the spraying thickness of the nickel-cobalt alloy powder is 0.07-0.09mm; (4) sending the heated reinforcing steel bar into a quencher, and carrying out quenching treatment directly by high pressure injection water or quenching liquid, and cooling the temperature of the reinforcing steel bar to 20-30DEG C, wherein quenching cooling speed is 15-20DEG C / s; (5) heating the quenched reinforcing steel bar to 550-580DEG C by a tempering heating furnace, and keeping the temperature for 50-90min; (6) naturally cooling the tempered reinforcing steel bar to the room temperature.

Description

technical field [0001] The invention relates to steel bars, in particular to a steel bar for automobiles. Background technique [0002] With the rapid development of the automobile industry, the standardization of auto parts has also promoted the rapid development of the automobile industry. The utilization rate of steel bars for automobiles is getting higher and higher, but the strength, corrosion resistance and high temperature resistance of steel bars are getting worse and worse. There are safety issues of broken steel bars and corrosion. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a steel bar for automobiles in view of the above shortcomings of the prior art. By compounding a layer of nickel-cobalt alloy powder on the surface of the steel bar, the strength of the steel bar is increased, and the steel bar is wear-resistant and resistant. Corrosion, and will not rust, which increases the reliability and sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D9/00C23C4/06C22C30/00
CPCC21D1/18C21D9/0075C22C30/00C23C4/06
Inventor 张超
Owner SUZHOU NIUDONG PRECISION MFG TECH CO LTD