Production method of high elasticity stainless steel belt for touch switch

A light touch switch and stainless steel strip technology, applied in the field of steel strip production, can solve the problems of high surface roughness, low fatigue life, low hardness, etc., and achieve the effect of low surface roughness, long fatigue life and high annealing temperature

Active Publication Date: 2013-08-21
无锡华生精密材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The thickness is relatively thick, the minimum is 0.1mm, and the weight is relatively heavy, which cannot meet the user's lightweight requirements;
[0004] 2. The hardness is relatively low, basically in the EH extra hard state, that is, the hardness HV is 500-540, and its elasticity cannot fully meet the use requirements;
[0005] 3. The strength (PK deviation - the maximum strength from the state of the shrapnel disconnected to the connection circuit) is large and uns

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Material selection

[0047] Select a 1Cr17Ni7 blank with a thickness of 0.7mm, and the tensile strength of the blank is 910N / mm 2 , the hardness is HV210;

[0048] (2) Perform a rolling

[0049] Cold rolling is carried out on a 20-high precision rolling mill at 250N / mm 2 Under the rolling tension of 300m / min and the rolling speed of 300m / min, the billet is roughly rolled into a semi-finished steel strip with a thickness of 0.34mm;

[0050] (3) Perform a cleaning

[0051] Pass the rolled semi-finished steel strip through the degreasing and cleaning unit at a speed of 98m / min to remove the grease remaining on the surface of the semi-finished steel strip during rolling, and prepare for an annealing;

[0052] (4) Perform an annealing

[0053] Under the protection of pure hydrogen decomposition gas, the semi-finished steel strip that has been cleaned once passes through a bright annealing furnace with a temperature of 1100 ° C at a speed of 9 m / min;

[0054] (5) Pe...

Embodiment 2

[0075] (1) Material selection

[0076] Select a 1Cr17Ni7 blank with a thickness of 0.7mm, and the tensile strength of the blank is 920N / mm 2 , the hardness is HV220;

[0077] (2) Perform a rolling

[0078] Cold rolling is carried out on a 20-high precision rolling mill at 450N / mm 2 Under the rolling tension of 300m / min and the rolling speed of 300m / min, the billet is roughly rolled into a semi-finished steel strip with a thickness of 0.345mm;

[0079] (3) Perform a cleaning

[0080] Pass the rolled semi-finished steel strip through the degreasing and cleaning unit at a speed of 100m / min to remove the grease remaining on the surface of the semi-finished steel strip during rolling, and prepare for an annealing;

[0081] (4) Perform an annealing

[0082] Under the protection of pure hydrogen decomposition gas, the semi-finished steel strip that has been cleaned once passes through the bright annealing furnace with a temperature of 1120 ° C at a speed of 10 m / min;

[0083] (...

Embodiment 3

[0104] (1) Material selection

[0105] Select a 1Cr17Ni7 blank with a thickness of 0.7mm, and the tensile strength of the blank is 930N / mm 2 , the hardness is HV230;

[0106] (2) Perform a rolling

[0107] Cold rolling is carried out on a 20-high precision rolling mill at 600N / mm 2 Under the rolling tension of 300m / min and the rolling speed of 300m / min, the billet is roughly rolled into a semi-finished steel strip with a thickness of 0.35mm;

[0108] (3) Perform a cleaning

[0109] Pass the rolled semi-finished steel strip through the degreasing and cleaning unit at a speed of 102m / min to remove the grease remaining on the surface of the semi-finished steel strip during rolling, and prepare for an annealing;

[0110] (4) Perform an annealing

[0111] Under the protection of pure hydrogen decomposition gas, the semi-finished steel strip that has been cleaned once passes through the bright annealing furnace with a temperature of 1140°C at a speed of 12m / min;

[0112] (5) P...

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Abstract

The invention relates to a production method of a high elasticity stainless steel belt for a touch switch, and in particular discloses a production method of the stainless steel belt which is used for manufacturing touch switches of electronic products such as mobile phones and computers. The production method is characterized by sequentially comprising steps such as a sorting, primary rolling, primary cleaning, primary annealing, secondary rolling, secondary cleaning, secondary annealing, tertiary rolling, tertiary cleaning, pulling rectification, high temperature relief annealing, anti-corrosive treatment, quartic cleaning and reverse pulling rectification. The stainless steel band produced by the method has the advantages of light weight, high hardness, low and stable force, long fatigue life, unified hand feeling and low roughness, and the stainless steel band can normally reserve and can avoid wasting and can meet operating requirements of elastic buttons of the electronic products such as the mobile phones and the computers, and the service lives of the elastic buttons are prolonged.

Description

technical field [0001] The invention relates to a method for producing a steel strip. Specifically, it is a production method for making stainless steel strips for tact switches of electronic products such as mobile phones and computers. Background technique [0002] It is known in the field of electronic product manufacturing such as mobile phones and computers that the input buttons (Metal Dome) of mobile phones, computers and other electronic products are all elastic buttons. Made of stainless steel band. Among them, the cold-rolled stainless steel is made by traditional methods, and the stainless steel strips produced by traditional methods have the following disadvantages: [0003] 1. The thickness is relatively thick, the minimum is 0.1mm, and the weight is relatively heavy, which cannot meet the user's lightweight requirements; [0004] 2. The hardness is relatively low, basically in the EH extra hard state, that is, the hardness HV is 500-540, and its elasticity c...

Claims

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Application Information

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IPC IPC(8): C23F11/10C21D8/06C22C38/40
Inventor 余叙斌韩子龙汤福朋计达
Owner 无锡华生精密材料股份有限公司
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