Production method of high elastic stainless steel strip for tact switch

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...

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 unstable, reaching more than 500gf;

[0006] 4. The fatigue life is low, basically no more than 500,000 times;

[0007] 5. The hand feel (CK) is very inconsistent, only about 30%;

[0008] 6. The surface roughness is high and cannot be below Ra0.05um;

[0009] 7. It is easy to rust and cannot be stored normally

[0010] Therefore, using this stainless steel band on the elastic buttons of electronic products such as mobile phones and computers will reduce the service life of the elastic buttons