Machining technology of high-strength wear-resistant guide rail steel
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A processing technology, high-strength technology, applied in metal material coating technology, manufacturing tools, ion implantation plating, etc., can solve problems such as inappropriate use, achieve cost saving, save operation steps, and small friction coefficient
Inactive Publication Date: 2021-02-26
桃江富硕精密机械有限公司
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Description
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Problems solved by technology
However, this casting is only suitable for use on axle housings and suspensions, and is not suitable for use in fields that require excellent wear resistance
Method used
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Embodiment 1
[0040] A processing technology for high-strength wear-resistant guide rail steel, specifically including the following steps:
[0041] S1. Billet heating: cut the billet, pickle the cut billet to remove impurities in the cross section, and then heat it at a heating rate of 10-20°C / min, wherein the temperature of the heating section is controlled at 1120-1250 °C, the soaking section temperature is controlled at 1160-1180 °C.
[0042] The chemical composition of the above-mentioned cast blanks is composed by weight percentage: C: 0.05-0.08%, Mn: 1.3-1.5%, Si: 0.36-0.43%, Cr: 0.08-0.18%, Ti: 1.0-1.2%, Ca: 0.02 -0.04%, Nb: 0.025-0.04%, N: 0.12-0.3%, Ni: 0.05-0.13%, Y: 0.03-0.08%, Sn: 0.003-0.01%, and the rest are Fe and unavoidable impurities.
[0043] S2. Slab hot rolling: hot-roll the heated slab, slowly cool down to the hot rolling start temperature at a rate of 5-8°C / min, control the hot rolling rate at 2-4.5m / s, and start the rolling temperature at 850-960°C, the final roll...
Embodiment 2
[0050] The processing technology of a high-strength wear-resistant guide rail steel is the same as that in Example 1, and the chemical composition and content of the casting billet are the same. Refer to Example 1 for details. The difference from Example 1 is that the chemical composition of the cast blank is composed of: C: 0.08-0.12%, Mn: 1.42-1.8%, Si: 0.25-0.38%, Cr: 0.26-0.4%, Ti : 1.0-1.2%, Ca: 0.02-0.04%, Nb: 0.025-0.03%, N: 0.12-0.24%, Ni: 0.05-0.11%, Y: 0.03-0.08%, Sn: 0.009-0.02%, and the rest Fe and unavoidable impurities.
Embodiment 3
[0052] The processing technology of a high-strength wear-resistant guide rail steel is the same as that in Example 1, and the chemical composition and content of the casting billet are the same. Refer to Example 1 for details. The difference from Example 1 is that the chemical composition of the cast blank consists of: C: 0.07-0.11%, Mn: 1.4-1.6%, Si: 0.30-0.38%, Cr: 0.24-0.32%, Ti : 1.0-1.2%, Ca: 0.02-0.04%, Nb: 0.03-0.04%, N: 0.20-0.28%, Ni: 0.10-0.13%, Y: 0.03-0.08%, Sn: 0.01-0.02%, and the rest Fe and unavoidable impurities.
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Abstract
The invention discloses a machining process of high-strength wear-resistant guide rail steel, and relates to the technical field of guide rail steel machining. The machining process of the high-strength wear-resistant guide rail steel comprises the following steps that a casting blank is heated and hot-rolled, section steel is quenched, cold drawing process treatment is carried out twice to obtaina steel billet, straightening and cropping are carried out on the steel billet, after acid pickling is carried out, tempering is carried out, and finally the surface of the guide rail steel is coatedwith a TiBYN composite coating to obtain a guide rail steel finished product. The casting blank comprises the following chemical components in percentage by weight: 0.05-0.12 % of C, 1.3-1.8 % of Mn,0.25-0.43 % of Si, 0.08-0.4 % of Cr, 1.0-1.2 % of Ti, 0.02-0.04 % of Ca, 0.025-0.04 % of Nb, 0.12-0.3 % of N, 0.05-0.13 % of Ni, 0.03-0.08 % of Y, 0.003-0.02 % of Sn and the balance of Fe and inevitable impurities. According to the guide rail steel machining process, the strength and the surface hardness of the guide rail steel are improved, the good yield is guaranteed, the guide rail steel hasexcellent abrasion resistance and corrosion resistance, and the service life of the guide rail steel is prolonged.
Description
technical field [0001] The invention belongs to the technical field of guide rail steel processing, and in particular relates to a processing technology of high-strength wear-resistant guide rail steel. Background technique [0002] Guide rail steel is a device that can bear, fix, and guide mobile devices or equipment and reduce its friction. Its general processing technology is hot-rolled, then cut, straightened, and cut. The yield is low. , high production costs, also increase energy consumption and labor intensity of workers. With the rapid development of industries such as automobiles, home appliances, furniture, railways, and aerospace, the requirements for guide rail steel are becoming increasingly stringent, and the consumption of guide rail steel is also increasing year by year. Guide rail steel has high requirements on material strength, wear resistance and dimensional accuracy, so as to ensure material processing, assembly accuracy and load strength without deform...
Claims
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Application Information
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