A wear-resistant and corrosion-resistant steel strip for garden tools and its preparation method

Abstract

The present invention provides a wear-resistant and corrosion-resistant steel strip for garden tools and a preparation method thereof, relating to the technical field of the preparation of steel strips for garden tools. The wear-resistant and corrosion-resistant steel strip for garden tools comprises the following components by mass percentage: C: 0.30 - 0.50%, Si: 1.0 - 1.2%, Mn: 0.4 - 0.6%, S: 0 - 0.02%, P: 0 - 0.02%, Cu: 0.1 - 0.3%, Al: 0.1 - 0.3%, Mo: 0.1 - 0.3%, Cr: 0.3 - 0.5%, Ni: 0.3 - 0.5%, V: 0.1 - 0.3%, and the balance is Fe and inevitable impurities. By adding elements such as aluminum, molybdenum, chromium, nickel and vanadium in the common steel-making process and cooperating with the full continuous rolling treatment of the steel billet, the wear resistance and corrosion resistance of the steel strip can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of the preparation of steel strips for garden tools, and specifically relates to a wear-resistant and corrosion-resistant steel strip for garden tools and a preparation method thereof. Background Art

[0002] Garden tools refer to tools used in gardens and other aspects. Classified by the usage occasion, garden tools include horticultural tools and garden tools. Classified by the usage object, they can also be divided into household tools and professional tools. As a kind of garden tool, a steel strip refers to a component made of carbon steel, which is a narrow and long steel plate produced by various rolling mills to meet the needs of different industrial departments for industrial production of various metal or mechanical products. Steel strips are divided into two categories: ordinary strip steel and high-quality strip steel according to the materials used; they are divided into hot-rolled steel strips and cold-rolled steel strips by processing methods.

[0003] In the process of using the existing steel strips, there are still defects. Due to the deficiencies in the materials and production processes, there are certain drawbacks in their wear resistance and corrosion resistance, resulting in a reduction in their service life and seriously affecting their use effects. Therefore, there is a need for a wear-resistant and corrosion-resistant steel strip for garden tools and a preparation method that can solve the above problems. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a wear-resistant and corrosion-resistant steel strip for garden tools and a preparation method thereof, which solves the problems of poor wear resistance and corrosion resistance.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A wear-resistant and corrosion-resistant steel strip for garden tools includes the following components by mass percentage: C: 0.30 - 0.50%, Si: 1.0 - 1.2%, Mn: 0.4 - 0.6%, S: 0 - 0.02%, P: 0 - 0.02%, Cu: 0.1 - 0.3%, Al: 0.1 - 0.3%, Mo: 0.1 - 0.3%, Cr: 0.3 - 0.5%, Ni: 0.3 - 0.5%, V: 0.1 - 0.3%, and the rest is Fe and unavoidable impurities.

[0008] Preferably, a preparation method for the wear-resistant and corrosion-resistant steel strip for garden tools is proposed, including the following steps:

[0009] S1: Take the above raw material composition ratio, place it in a high-temperature melting furnace for smelting treatment to obtain molten steel;

[0010] S2: Place the molten steel obtained in S1 in a mold for casting to obtain a steel billet;

[0011] S3: Continuously roll the steel billet into a steel strip. Here, the starting rolling temperature is 1000°C - 1100°C, and the finishing rolling temperature is 950°C - 1000°C. Then, air-cool the rolled product to room temperature;

[0012] S4: Normalize the steel after the rolling treatment. The normalizing temperature is 900 - 950°C, and the holding time is 3 - 5 hours;

[0013] S5: Quench the steel strip after the normalizing treatment. The quenching temperature is 800 - 900°C, and the holding time is 2 - 3 hours;

[0014] S6: Temper the steel after the quenching treatment. The tempering temperature is 520 - 580°C, and the holding time is 3 - 5 hours to obtain the rough steel strip.

[0015] Preferably, in step S1, the smelting temperature is 1500 - 1600°C.

[0016] Preferably, in step S4, the cooling method during the normalizing treatment is air cooling.

[0017] Preferably, in step S5, the cooling method during the quenching treatment is water cooling, and the cooling time is 10 - 30 minutes.

[0018] Preferably, in step S6, the cooling method during the tempering treatment is water cooling, and the cooling time is 1 - 2 hours.

[0019] Preferably, grind and finish the rough steel strip obtained in S6 to obtain the steel strip product.

[0020] (III) Beneficial Effects

[0021] The present invention provides a wear-resistant and corrosion-resistant steel strip for garden tools and a preparation method thereof. It has the following beneficial effects:

[0022] 1. By adding elements such as aluminum, molybdenum, chromium, nickel, and vanadium to the common steel-making process and cooperating with the continuous rolling treatment of the steel billet, the wear resistance and corrosion resistance of the steel strip can be improved.

[0023] 2. By normalizing, quenching, and tempering the steel strip, the residual stress can be eliminated, deformation and cracking can be prevented, its strength can be improved, and its service life can be extended. Specific Embodiments

[0024] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment 1:

[0026] The present invention provides a wear-resistant and corrosion-resistant steel strip for garden tools, which comprises the following components by mass percentage: C: 0.30%, Si: 1.0%, Mn: 0.4%, S: 0.01%, P: 0.01%, Cu: 0.1%, Al: 0.1%, Mo: 0.1%, Cr: 0.3%, Ni: 0.3%, V: 0.1%, and the rest is Fe and inevitable impurities.

[0027] A preparation method of a wear-resistant and corrosion-resistant steel strip for garden tools comprises the following steps:

[0028] S1: Take the above mass ratio of raw material composition, place it in a high-temperature melting furnace for smelting treatment, the smelting temperature is 1500 - 1600 °C, and obtain molten steel;

[0029] S2: Place the molten steel obtained in S1 in a mold for casting to obtain a steel billet;

[0030] S3: Perform full continuous rolling on the steel billet to roll it into a steel strip. Among them, the starting rolling temperature is 1000 °C - 1100 °C, the finishing rolling temperature is 950 °C - 1000 °C, and then the rolled product is air-cooled to room temperature;

[0031] S4: Perform normalizing treatment on the steel after the rolling treatment, the normalizing temperature is 900 - 950 °C, the holding time is 3 - 5 hours, and the cooling method is air cooling;

[0032] S5: Perform quenching treatment on the steel strip after the normalizing treatment, the quenching temperature is 800 - 900 °C, the holding time is 2 - 3 hours, the cooling method is water cooling, and the cooling time is 10 - 30 minutes, the cooling method is water cooling, and the cooling time is 1 - 2 hours;

[0033] S6: Perform tempering treatment on the steel after the quenching treatment, the tempering temperature is 520 - 580 °C, the holding time is 3 - 5 hours, obtain a rough steel strip, and perform grinding and finishing on the rough steel strip to obtain a steel strip product.

[0034] Embodiment 2:

[0035] An embodiment of the present invention provides a wear-resistant and corrosion-resistant steel strip for gardening tools, which comprises the following components by mass percentage: C: 0.40%, Si: 1.1%, Mn: 0.5%, S: 0.01%, P: 0.01%, Cu: 0.2%, Al: 0.2%, Mo: 0.2%, Cr: 0.4%, Ni: 0.4%, V: 0.2%, and the balance is Fe and unavoidable impurities.

[0036] A preparation method for a wear-resistant and corrosion-resistant steel strip for gardening tools is provided, comprising the following steps:

[0037] S1: Take the above raw material composition ratio, place it in a high-temperature melting furnace for smelting treatment, the smelting temperature is 1500 - 1600 °C, to obtain molten steel;

[0038] S2: Place the molten steel obtained in S1 into a mold for casting to obtain a steel billet;

[0039] S3: Perform full continuous rolling on the steel billet to roll it into a steel strip. Among them, the starting rolling temperature is 1000 °C - 1100 °C, the finishing rolling temperature is 950 °C - 1000 °C, and then the rolled product is air-cooled to room temperature;

[0040] S4: Perform normalizing treatment on the steel after the rolling treatment, the normalizing temperature is 900 - 950 °C, the holding time is 3 - 5 hours, and the cooling method is air-cooling;

[0041] S5: Perform quenching treatment on the steel strip after the normalizing treatment, the quenching temperature is 800 - 900 °C, the holding time is 2 - 3 hours, the cooling method is water-cooling, and the cooling time is 10 - 30 minutes, the cooling method is water-cooling, and the cooling time is 1 - 2 hours;

[0042] S6: Perform tempering treatment on the steel after the quenching treatment, the tempering temperature is 520 - 580 °C, the holding time is 3 - 5 hours, to obtain a rough steel strip, and perform grinding and finishing on the rough steel strip to obtain a steel strip product.

[0043] Example three:

[0044] An embodiment of the present invention provides a wear-resistant and corrosion-resistant steel strip for gardening tools, which comprises the following components by mass percentage: C: 0.50%, Si: 1.2%, Mn: 0.6%, S: 0.01%, P: 0.01%, Cu: 0.3%, Al: 0.3%, Mo: 0.3%, Cr: 0.5%, Ni: 0.5%, V: 0.3%, and the balance is Fe and unavoidable impurities.

[0045] A preparation method for a wear-resistant and corrosion-resistant steel strip for gardening tools is provided, comprising the following steps:

[0046] S1: Take the above raw material composition ratio in parts by mass, place it in a high-temperature melting furnace for smelting treatment, with the smelting temperature being 1500 - 1600 °C, to obtain molten steel;

[0047] S2: Place the molten steel obtained in S1 into a mold for casting to obtain a steel billet;

[0048] S3: Continuously roll the steel billet into a steel strip. Among them, the starting rolling temperature is 1000 °C - 1100 °C, and the final rolling temperature is 950 °C - 1000 °C. Then, air-cool the rolled product to room temperature;

[0049] S4: Normalize the steel after the rolling treatment. The normalizing temperature is 900 - 950 °C, the holding time is 3 - 5 hours, and the cooling method is air cooling;

[0050] S5: Quench the steel strip after the normalizing treatment. The quenching temperature is 800 - 900 °C, the holding time is 2 - 3 hours, the cooling method is water cooling, and the cooling time is 10 - 30 minutes. The cooling method is water cooling, and the cooling time is 1 - 2 hours;

[0051] S6: Temper the steel after the quenching treatment. The tempering temperature is 520 - 580 °C, the holding time is 3 - 5 hours, to obtain a rough steel strip, and then grind and finish the rough steel strip to obtain a steel strip product.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation method of a wear-resistant and corrosion-resistant steel strip for garden tools, characterized in that: It includes the following steps: S1: Take steel strip raw materials by mass percentage: C: 0.30 - 0.50%, Si: 1.0 - 1.2%, Mn: 0.4 - 0.6%, S: 0 - 0.02%, P: 0 - 0.02%, Cu: 0.1 - 0.3%, Al: 0.1 - 0.3%, Mo: 0.1 - 0.3%, Cr: 0.3 - 0.5%, Ni: 0.3 - 0.5%, V: 0.1 - 0.3%, and the rest are Fe and inevitable impurities. Mix the raw material compositions in the above mass percentages and place them in a high-temperature melting furnace for smelting treatment to obtain molten steel, and the smelting temperature is 1500 - 1600 °C; S2: Place the molten steel obtained in S1 into a mold for casting to obtain a steel billet; S3: Continuously roll the steel billet into a steel strip. Among them, the starting rolling temperature is 1000 °C - 1100 °C, and the finishing rolling temperature is 950 °C - 1000 °C. Then, air-cool the rolled product to room temperature; S4: Normalize the steel after the rolling treatment. The normalizing temperature is 900 - 950 °C, and the holding time is 3 - 5 hours. The cooling method during the normalizing treatment is air-cooling; S5: Quench the steel strip after the normalizing treatment. The quenching temperature is 800 - 900 °C, and the holding time is 2 - 3 hours; S6: Temper the steel after the quenching treatment. The tempering temperature is 520 - 580 °C, and the holding time is 3 - 5 hours to obtain a rough steel strip; 2. The preparation method of a wear-resistant and corrosion-resistant steel strip for garden tools according to claim 1, characterized in that: In step S5, the cooling method during the quenching treatment is water-cooling, and the cooling time is 10 - 30 minutes.

3. The preparation method of a wear-resistant and corrosion-resistant steel strip for garden tools according to claim 1, characterized in that: In step S6, the cooling method during the tempering treatment is water-cooling, and the cooling time is 1 - 2 hours.

4. The preparation method of a wear-resistant and corrosion-resistant steel strip for garden tools according to claim 1, characterized in that: Grind and finish the rough steel strip obtained in S6 to obtain a steel strip product.

5. A steel strip prepared by the method for preparing a wear-resistant and corrosion-resistant steel strip for garden tools according to claim 1, characterized in that, The steel strip raw materials are by mass percentage: C: 0.30 - 0.50%, Si: 1.0 - 1.2%, Mn: 0.4 - 0.6%, S: 0 - 0.02%, P: 0 - 0.02%, Cu: 0.1 - 0.3%, Al: 0.1 - 0.3%, Mo: 0.1 - 0.3%, Cr: 0.3 - 0.5%, Ni: 0.3 - 0.5%, V: 0.1 - 0.3%, and the rest are Fe and inevitable impurities.