Steel disc strip for diode lead and production technology of steel disc strip

A steel wire rod and diode technology, applied in the field of steel wire rod for diode leads and its production process, can solve the problems of unstable quality, high wire rod strength, low conductivity, etc., and achieve excellent cold working performance and excellent ductility , Excellent electrical conductivity

Active Publication Date: 2015-09-30
ZENITH STEEL GROUP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its components and weight percentages are: [C]: 0.04% ~ 0.08%, [Si] 0.05% ~ 0.09%, [Mn] ≤ 0.60%, [Al] ≥ 0.020%, [P] ≤ 0.020%, [S ]≤0.015%, but there are still some technical problems: ①The content of C, Si, Mn is high, the strength of the wire rod is high, and the processing cracking phenomenon often occurs during the processing of the user; The drawing performance is not ideal, and the minimum drawing value is only 0.5mm; ③The purity...

Method used

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  • Steel disc strip for diode lead and production technology of steel disc strip
  • Steel disc strip for diode lead and production technology of steel disc strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 (stove number 615030144)

[0043] (1) Converter smelting process

[0044] Converter smelting uses high-quality molten iron and pig iron raw materials. Among them, the mass content requirements of components in molten iron entering the furnace are: Si: 0.45%, P: 0.096%, S: 0.016%, and the temperature of molten iron entering the furnace is T = 1318°C.

[0045] During the converter smelting process, the blowing operation at low gun position is implemented, the tapping end point [C] is controlled to 0.11%, the end point [P]=0.007%, the tapping temperature is 1645°C, the tapping process adopts the sliding plate slag blocking operation, and the tapping time is 3.5 minute;

[0046] (2) RH carbon deoxidation process

[0047] RH adopts vacuum carbon deoxidation process for pre-deoxidation, and the vacuum is kept below 300Pa for 2.5 minutes to ensure that the [C] of RH is 0.04% after breaking the vacuum; after breaking the vacuum, add aluminum cakes to the furnace ...

Embodiment 2

[0055] Embodiment 2 (stove number 615030145)

[0056] This furnace is a continuous pouring furnace. After soft blowing, the hanging ladle temperature is set to 1610°C, the degree of superheat is 31°C, and the casting speed is 1.77m / min. The rest of the operations are the same as in Example 1.

Embodiment 3

[0057] Embodiment 3 (stove number 615030146)

[0058] Converter tapping control end point [C] = 0.10%. This furnace is a continuous pouring furnace. After soft blowing, the hanging ladle temperature is set to 1611°C, the degree of superheat is 32°C, and the casting speed is 1.75m / min. The rest of the operations are the same as in Example 1. same.

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Abstract

The invention relates to steel and a production method of the steel, in particular to a steel disc strip for a diode lead and a production technology of the steel disc strip. The steel disc strip comprises, by weight, 0.03% to 0.06% of C, 0.02% to 0.05% of Si, 0.18% to 0.28% of Mn, larger than or equal to 0.020% of Al, not larger than 0.015% of P, not larger than 0.015% of S, not larger than 0.20% of Cr or Ni or Cu, not larger than 10ppm of Ca, and the balanced Fe and inevitable impurities. The preparation method comprises a converter refining working procedure, an RH carbon-deoxidization working procedure, an LF refining working procedure, a continuous casting working procedure and a rolling working procedure. The technical problems that at present, the steel disc strip for the diode lead is poor in drawing property, cold machining cracks are prone to being generated, the purity is not high, and the quality is unstable are solved.

Description

technical field [0001] The invention relates to a steel and a production method thereof, in particular to a steel wire rod for a diode lead wire and a production process thereof. Background technique [0002] Diode leads are the metal conductors in the diode that connect to the chip. Usually, the material of the diode lead is oxygen-free copper, alloy copper or copper-clad steel wire, and the material is required to have high purity, good electrical conductivity, good processing performance, good plasticity index, and appropriate strength. [0003] Due to the relative scarcity of copper resources, the price of copper has remained high for a long time. Therefore, the use of oxygen-free copper and alloy copper to make diode leads will greatly increase the cost of diode manufacturers. In order to reduce the production costs of diode companies and improve product competitiveness, diodes The lead manufacturer adopts a composite wire with more than 90% of the copper layer wrapped...

Claims

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Application Information

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IPC IPC(8): C22C38/06C22C38/42C22C38/40C22C38/20C22C38/18C22C33/04
Inventor 豆乃远万文华
Owner ZENITH STEEL GROUP CORP
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