Manufacturing method of alloy steel for oil filter nozzle

Abstract

The invention discloses alloy steel for an oil filter nozzle. The alloy steel comprises the following components in percentage by weight: 0.21%-0.22% of C, less than or equal to 0.022% of S, less than or equal to 0.30% of Si, less than or equal to 0.0025% of O, less than or equal to 0.0070% of N, 0.19%-0.3% of Cu, 1.55%-1.70% of Ni, 0.19%-0.3% of Cr, 0.19%-0.3% of Mo, 0.19%-0.3% of Nb, 0.011%-0.015% of Ti, 1%-2% of rare earth and the balance of Fe and impurities. The component formula is reasonable in design, the interior of the alloy steel plate obtained after heat treatment is transformed from austenite to martensite in combination with the manufacturing method, then the austenite steel plate with uniform components is obtained through heating and heat preservation, and the steel plate has the advantages of being resistant to high temperature and corrosion and good in flexibility and can meet the use requirement. Through the steps of segmented cooling, heat preservation, cooling, reheating, heat preservation and cooling, the obtained alloy steel plate can be well applied to the oil filter nozzle and has the advantages of being long in service life and good in flexibility.

Description

Technical field [0001] The present invention relates to the field of high-performance materials, mainly about high temperature resistance, corrosion resistance, good flexibility of alloy steel and preparation method thereof, in particular to the preparation method of alloy steel for preparing oil filter nozzles. Background [0002] The oil filter nozzle is an important accessory of the oil filter rotor, which is driven by the pressure generated by the oil. After the oil filter is turned on, the oil in the tank is fed into the rotor by a pump, and when the oil is filled with the rotor, it is sprayed along the lower nozzle of the turntable. The use environment of the nozzle determines that it needs to have the characteristics of high temperature resistance, corrosion resistance and good flexibility, but the existing alloy steel cannot meet the needs of use and has a short service life. [0003] Publication No. CN103614664A relates to a martensitic alloy steel material for gas valv...

AI Technical Summary

Problems solved by technology

The use environment of the nozzle determines that it needs to have the characteristics of high temperature resistance, corrosion resistance and good flexibility at the same time, but the existing alloy steel cannot meet the use requirements, and the service life is short

[0003] Publication number CN103614664A relates to a martensitic alloy steel material for internal combustion engine valves, which contains chemical element components and mass percentages: carbon 0.6-0.9, silicon 0.2-0.3, manganese 3.3-3.5, chromium 0.4-0.5, molybdenum 0.03-0.05, vanadium 0.004-0.005, Ti0.06-0.08, Ni2.3-2.5, Sb0.01-0.03, P ≤ 0.030, S ≤ 0.030, the balance is iron, by using antimony and other raw material combinations, reasonable setting Ratio, reasonable setting of the feeding sequence, the formed alloy material has the characteristics of high strength, high hardness, good wear resistance, good toughness, corrosion resistance, and oxidation resistance. It is suitable for internal combustion engine valves and has high air density; by adding refining agent, the pores The temperature is reduced by 1-2 degrees, but the martensitic alloy steel material for internal combustion engine valves also has the defect of poor high temperature resistance during use