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Ultra-low carbon steel wire rod for copper clad steel wire and its production process

A technology of ultra-low carbon steel and production process, which is applied in the direction of manufacturing tools, workpiece cooling devices, metal processing equipment, etc., can solve the problems of poor peeling effect of ultra-low carbon steel wire rods, etc. rate, meet the drawing performance and electrical conductivity, the effect of easy peeling

Active Publication Date: 2022-04-12
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the shelling effect of existing ultra-low carbon steel wire rod for copper-clad steel wire is not good

Method used

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  • Ultra-low carbon steel wire rod for copper clad steel wire and its production process
  • Ultra-low carbon steel wire rod for copper clad steel wire and its production process
  • Ultra-low carbon steel wire rod for copper clad steel wire and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0075] A production process for ultra-low carbon steel wire rods for copper-clad steel wires, comprising the steps of:

[0076] (1) Smelting: Control the components in the billet according to the mass percentage: C≤0.01%, Si≤0.005%, Mn≤0.1%, P≤0.015%, S≤0.01%, Cr≤0.01%, Ni≤0.01% , Mo≤0.01%, the balance is Fe and unavoidable impurities.

[0077] (2) Heating: The temperature of the preheating section is 550-650°C, the temperature of the heating section is 950-1120°C, and the temperature of the soaking section is 1000-1200°C. The heating time in the heating furnace is 140-160min.

[0078] (3) Descaling: The descaling pressure is about 19Mpa.

[0079] (4) Rolling: The rolling start temperature is 970-1000°C, the finish rolling inlet temperature is 940-980°C, the sizing inlet temperature is 940-980°C, and the spinning temperature is 900-910°C.

[0080] (5) Cooling after rolling: The air-cooling line of the Stelmo air-cooling device is divided into 10 sections. In the first 4 sec...

experiment example

[0091] The production processes of the above-mentioned examples and comparative examples are summarized in Table 3.

[0092] Table 3 Production process conditions of ultra-low carbon steel wire rod for copper-clad steel wire

[0093]

[0094] The performance testing of the ultra-low carbon steel wire rods for copper-clad steel wire provided in the above-mentioned embodiments and comparative examples is shown in Table 4.

[0095] Table 4 Performance of ultra-low carbon steel wire rod for copper-clad steel wire

[0096]

[0097] It can be seen from the contents of Table 3 and Table 4 that among the components of the ultra-low carbon steel wire rod for copper-clad steel wire provided by the present application, Si≤0.005%Cr≤0.01%, Ni≤0.01%, Mo≤0.01%; and spinning The temperature is relatively high, and cooling after rolling is carried out by first intercooling and then slow cooling. The tensile strength and electrical conductivity of the obtained ultra-low carbon steel wire...

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Abstract

The application provides an ultra-low carbon steel wire rod for copper-clad steel wire and a production process thereof, belonging to the technical field of wire rod production. The tensile strength of ultra-low carbon steel wire rod is ≤320MPa, and the electrical conductivity is ≥16%. The ultra-low carbon steel wire rod includes a metal matrix, and FeO layers and Fe 3 o 4 Floor. The composition of the metal matrix is ​​C≤0.01%, Si≤0.005%, Mn≤0.1%, P≤0.015%, S≤0.01%, Cr≤0.01%, Ni≤0.01%, Mo≤0.01%, and the balance It is Fe and unavoidable impurities. FeO layer and Fe 3 o 4 The layer thickness ratio is (3.25‑8):1. The wire rod meets the requirements of drawing and electrical conductivity, and at the same time, the iron oxide scale is easy to peel off, and the peeled iron oxide scale is in powder form, which is convenient for the production of subsequent products.

Description

technical field [0001] The application relates to the technical field of wire rod production, in particular to an ultra-low carbon steel wire rod for copper-clad steel wire and its production process. Background technique [0002] The current grades of ultra-low carbon steel wire rods for copper-clad steel wire are basically SWRM6, DL05, DL08, etc., and the content of other components is extremely low, close to industrial pure iron, and the electrical conductivity is required to be above 16%. After the downstream customers mechanically peel off the iron oxide scale of the wire rod, they will go through 8-15 times of drawing and annealing process, and finally draw the steel wire to the minimum 0.3mm. According to the current skin effect, it will be used as the copper-clad wire core wire, and then Produce non-standard cables, shielded network cables and other products by surface copper plating. [0003] This type of wire rod is mainly processed by drawing, which requires good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/16B21B37/74B21B45/02B21B45/08C22C38/00C22C38/02C22C38/04C22C38/44
CPCB21B1/16B21B45/08B21B45/0209B21B37/74C22C38/44C22C38/004C22C38/04C22C38/02C22C38/002B21B2045/0212
Inventor 周楠丘文生张志明岳峰黄德智农之江刘金源胡娟马超经勇明黄锦标孙福猛朱祥睿李富强
Owner SGIS SONGSHAN CO LTD