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A kind of structural steel wire rod and its production method

A production method and technology of structural steel, applied in the direction of heat treatment process control, heat treatment equipment, manufacturing tools, etc., can solve the problems of low hardness, inability to have better mechanical properties at the same time, and inability to meet the use requirements, etc.

Active Publication Date: 2020-09-04
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the overall hardness of the products processed by the current S45C series of mechanical structural steel wire rods is low, and they cannot have good mechanical properties at the same time, and cannot meet the requirements of use.

Method used

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  • A kind of structural steel wire rod and its production method
  • A kind of structural steel wire rod and its production method
  • A kind of structural steel wire rod and its production method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0059] This embodiment provides a structural steel wire rod, including a first specification wire rod with a diameter of 8mm, a second specification wire rod with a diameter of 15mm, and a second specification wire rod with a diameter of 18mm, which are produced according to the following production method :

[0060] (1) Steelmaking: Melt steel is smelted and continuously cast into billets according to the following chemical composition. The chemical composition includes by mass percentage: C: 0.45%, Si: 0.25%, Mn: 0.75%, P: 0.030%, S: 0.020% , Ni: 0.05%, Cr: 0.1%, Cu: 0.05%, Als: 0.020%, and the rest is Fe and unavoidable impurities.

[0061] (2) Rolling: After heating the steel slab obtained from the above-mentioned steelmaking in a heating furnace, it is rolled into a coil at a high speed. The heating temperature is 1100°C. The control data of the rolling temperature are shown in Table 1 below.

[0062] Table 1 Control data of rolling temperature (℃)

[0063]

[0064] ...

Embodiment 2

[0072] This embodiment provides a structural steel wire rod, including a first specification wire rod with a diameter of 8mm, a second specification wire rod with a diameter of 15mm, and a second specification wire rod with a diameter of 18mm, which are produced according to the following production method :

[0073] (1) Steelmaking: molten steel is smelted according to the following chemical composition and continuously cast into steel slabs. The chemical composition includes by mass percentage: C: 0.44%, Si: 0.20%, Mn: 0.65%, P: 0.020%, S: 0.028% , Ni: 0.01%, Cr: 0.05%, Cu: 0.02%, Als: 0.015%, and the remainder is Fe and unavoidable impurities.

[0074] (2) Rolling: After heating the steel slab obtained from the above-mentioned steelmaking in a heating furnace, it is rolled into a coil at a high speed. The heating temperature is 1000°C. The control data of the rolling temperature are shown in Table 4 below.

[0075] Table 4 Control data of rolling temperature (℃)

[0076] ...

Embodiment 3

[0084] This embodiment provides a structural steel wire rod, including a first specification wire rod with a diameter of 8mm, a second specification wire rod with a diameter of 15mm, and a second specification wire rod with a diameter of 18mm, which are produced according to the following production method :

[0085] (1) Steelmaking: Melt steel is smelted and continuously cast into billets according to the following chemical composition. The chemical composition includes by mass percentage: C: 0.48%, Si: 0.35%, Mn: 0.85%, P: 0.020%, S: 0.012% , Ni: 0.05%, Cr: 0.15%, Cu: 0.03%, Als: 0.035%, and the remainder is Fe and unavoidable impurities.

[0086] (2) Rolling: After heating the steel slab obtained from the above-mentioned steelmaking in a heating furnace, it is rolled into a coil at a high speed. The heating temperature is 1200°C. The control data of the rolling temperature are shown in Table 7 below.

[0087] Table 7 Control data of rolling temperature (℃)

[0088] ...

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Abstract

The embodiment of the invention provides a structure steel wire rod and a production method thereof and relates to the field of steel structures. The structure steel wire rod comprises chemical components including, by mass, 0.42%-0.48% of C, 0.15%-0.35% of Si, 0.6%-0.9% of Mn, smaller than 0.030% of P, 0.012%-0.028% of S, 0.003%-0.2% of Ni, 0.02%-0.2% of Cr, 0.02%-0.3% of Cu, smaller than or equal to 0.35% of Ni and Cr, 0.010%-0.035% of Als and the balance Fe and inevitable impurities. According to the production method, a certain final rolling temperature, a certain spinning temperature, a certain roller bed speed and a certain cooling temperature are adopted, the hardness of the structure steel wire rod is high, and meanwhile good mechanical performance is achieved.

Description

technical field [0001] The present application relates to the field of steel structures, in particular to a structural steel wire rod and a production method thereof. Background technique [0002] S45C series mechanical structural steel wire rods are widely used in refrigerators, air conditioners and other home appliances. Specifically, the wire rods can be drawn, cut and turned into mechanical parts such as motor shafts. S45C series mechanical structural steel wire rods need to have appropriate hardness and good mechanical properties. On the one hand, the product can meet the requirements of use, such as the motor shaft needs to bear the load and rotate at high speed during the working process, and on the other hand, it is conducive to cutting and processing into products. [0003] However, the current S45C series of mechanical structural steel wire rods have low overall hardness and cannot have good mechanical properties at the same time, which cannot meet the requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/42C22C38/06C22C38/04C22C38/02C21D8/02C21D11/00B21B1/16B21B37/74B21B37/76
CPCB21B1/16B21B37/74B21B37/76B21B2261/20C21D8/0205C21D8/0247C21D11/005C21D2211/005C21D2211/009C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42
Inventor 胡娟李成良周楠黄德智雷中钰敖永明农之江谢杰智刘金源刘春林
Owner SGIS SONGSHAN CO LTD