Production technology of sim mobile phone card slot and prepared coating for mobile phone card slot

Abstract

The invention discloses a production technology of an SIM mobile phone card slot. The production technology includes the following successive technological steps that a production drawing is drawn according to the shape and size of a mobile phone card slot; stainless steel base metal with the matched size and material is selected according to the size of the mobile phone card slot, and the production technological steps are determined and include N steps, wherein N is larger than 0; the product production technological size is formulated and a product deformation pattern is drawn according tothe shape and size of the mobile phone card slot; M production dies are formed, wherein M is smaller than or equal to N; the first production die is loaded into a continuous rolling machine, after thebase metal enters the continuous rolling machine to be rolled, the rolled base metal is subjected to size detection, and then annealing is conducted; and continuous rolling and annealing are conducted five times. By means of the production technology, the product deformation pattern is designed, the deformation machining amount of each time is designed into the deformation pattern, and the product hardness is controlled; and the continuous rolling technology is adopted, a final sample can be formed by conducting rolling five times continuously, coherent productivity is achieved on clients with the large quantity demand, and the production speed is increased; and accurate grinding is conducted on a material surface, and the material surface is bright and free of burrs.

Description

Technical field [0001] The invention relates to a production process of a SIM mobile phone card slot. Background technique [0002] With the rapid development of the mobile phone industry in recent years, the SIM card slot has always been one of the important mobile phone parts, with its small size and high production precision. In the past, there were many SIM cell phone slots of different materials, such as plastic steel, plastic, aluminum alloy, stainless steel, plastic and other materials. For a while, operators have launched mobile phone number burning services, but because there are some criminals who can steal phone calls and steal call charges by burning numbers, it does not bring benefits to customers, so operators still use SIM cards as users. To identify the credentials and payment status, the mobile phone can communicate normally, mainly relying on the baseband chip, even if the SIM card slot is cancelled, it is still inseparable, so whether it is to achieve dual-car...

AI Technical Summary

Problems solved by technology

However, the current product molding effect is not good, the surface brightness is average and there are some burrs, and the precision of the profile is not high; and 12-roll or 14-roll or even 20-roll precision rolling mills are required during rolling, which requires a large investment in equipment, and the equipment occupies a large area. Maintenance costs are also high

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