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Rust-resistant wire production method

A production method and wire rod technology, applied in workpiece surface treatment equipment, coating, metal rolling, etc., to prevent contact, reduce rust, and reduce electron transfer.

Inactive Publication Date: 2020-06-09
XINGTAI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above patents involves the use of protective fluid, which is different from this application

Method used

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  • Rust-resistant wire production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 10B21 hot-rolled wire rod for domestic customers: C: 0.20%, Si: 0.05%, Mn: 0.85%, Cr: 0.10%.

[0025] The heating temperature of the billet is 1040°C, the amount of water in the process is reduced, and the spinning temperature is 805°C. After spinning, turn on the fan to cool down to 600±20°C, turn off the heat preservation cover and fan, and air-cool to room temperature after collecting coils at 500±20°C. The wire coil was sprayed with a corrosion inhibitor solution using the residual heat after coil collection, and the solution was 1% urotropine by mass fraction. For the hot-rolled wire rod after this process, taking the diameter Ф18mm as an example, the thickness of the iron oxide scale is 16μm, and the Fe 3 o 4 The layer content is 85%, and the wire stock is stored for 3 months, and the rust amount is less than 6%.

Embodiment 2－10

[0027] Adopt the same technique as embodiment 1 to prepare the wire rod, and measure the thickness and Fe of the hot-rolled wire rod oxide scale 3 o 4 Layer content, and the amount of rust after 3 months of storage. The difference is that the chemical components listed in Table 2 and their mass percentages were used to replace the chemical components and their mass percentages of the steel grades involved in Example 1, and the steel slab heating listed in Table 3 was used. temperature, spinning temperature, protective liquid composition and content instead of the corresponding billet heating temperature used in embodiment 1, spinning temperature, protective liquid composition and content, the wire specification listed in Table 4, the thickness of iron oxide scale and Fe 3 o 4 layer content, storage conditions, corrosion amount instead of corresponding wire specification, iron oxide scale thickness and Fe in embodiment 1 3 o 4 layer content, storage conditions, and corrosio...

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Abstract

The invention discloses a rust-resistant wire production method. The production method comprises the steps of steel billet heating, control over rolling and control over a cooling process, and furthercomprises the step that after a wire is coiled, a water-borne protective solution is sprayed, and the wire is prevented from getting rust. The wire comprises the chemical components including, by weight, 0.06-0.55% of C, 0.01-0.30% of Si, 0.01-0.50% of Cr and 0.01-1.60% of Mn; the steel billet heating temperature is controlled to be 1000 DEG C-1050 DEG C in the rolling process, and less water issprayed as far as possible in the rolling process, so that incrustation is prevented; the laying temperature is 800+ / -5 DEG C, after laying, a blower is started, quick cooling is conducted to 600+ / -20DEG C, afterwards, the blower and a heat-insulation cover are turned off, slow cooling is conducted to 500+ / -20 DEG C to coil the wire, an oxidized scale with the thickness being within the range of10-20 micrometers can be obtained, and Fe3O4 can be up to 60% or above. By spraying the protective solution onto the surface of the wire and optimizing the rolling-controlling and cooling-controllingmeans, the surface of the wire is effectively isolated from air, and rusting is reduced.

Description

technical field [0001] The invention belongs to the field of hot-rolled wire rod production and relates to a production method for hot-rolled wire rods capable of reducing wire rod corrosion. Background technique [0002] Hot-rolled wire rods are prone to rust and affect their use. Especially when the transportation distance is long or when it needs to be exported, although the packaging is good, it is also prone to rust. Corrosion is caused by the contact between steel and water vapor. When the oxide scale is too thin or damaged, the steel is directly in contact with the air, making corrosion more likely to occur. [0003] At present, the method to solve the corrosion is mainly to control the composition of the oxide scale, so that there are more plates and less wires. For example, the invention patent CN 107321787 A discloses a method for controlling the oxide scale on the atmospheric corrosion-resistant surface of low-alloy cold heading steel wire rod, including: contro...

Claims

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Application Information

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IPC IPC(8): C23F11/08B21B1/16B21B45/00C09D183/04C09D5/08C09D127/12C09D171/02
CPCC23F11/08B21B1/16B21B45/00C09D183/04C09D4/00C09D5/08C09D127/12C09D171/02C08L71/02C08L27/12Y02P70/10
Inventor 王宁涛田新中董庆阮士朋王利军张鹏王冬晨温娜娜孔令波秦耀宗
Owner XINGTAI IRON & STEEL