1、普通冷轧板 SPCC SPCC是指钢锭经过冷轧机连续轧制成要求厚度的钢板卷料或片料。SPCC表面没有任何的防护，暴露在空气中极易被氧化，特别是在潮湿的环境中氧化速度加快，出现暗红色的铁锈，在使用时表面要喷漆、电镀或者其它防护。
Sheet metal processing has the characteristics of light weight, high strength, electrical conductivity (able to be used for electromagnetic shielding), low cost, and good mass production performance. It has been widely used in electronic and electrical, communication, automobile industry, medical equipment and other fields. For example, in computer chassis, mobile phone and MP3, sheet metal is an essential part.
With the application of sheet metal more and more widely, the design of sheet metal parts becomes a very important part of the process of product development. The mechanical engineers must master the design skills of sheet metal parts skillfully, so that the design of sheet metal not only meets the requirements of the product's function and appearance, but also makes the stamping die manufacturing simple and low cost.
Sheet metal materials suitable for stamping are very numerous. Sheet metal materials widely used in electronic and electrical industry include:
1. The common cold rolled plate SPCC SPCC refers to the continuous rolling of steel ingots through the cold rolling mill to make steel sheet or sheet material with required thickness. There is no protection on the surface of the SPCC. The exposure to the air is very easy to be oxidized, especially in the wet environment, the speed of oxidation is accelerated, the dark red rust appears, and the surface should be painted, electroplated, or other protective surfaces.
2, the base material of SECC SECC of galvanized steel plate is a general cold rolled steel coil. After the continuous galvanizing line is degreased, acid washing, electroplating and various post-processing processes, it becomes a galvanizing product. SECC not only has the mechanical properties and approximate machinability of the common cold rolled steel sheet, but also has superior corrosion resistance and decorative appearance. The market of electronic products, household appliances and furniture has great competitiveness and substitution. For example, the common use of computer boxes is SECC.
3, hot dipped galvanized steel SGCC hot dip galvanized steel coil is to hot rolled or cold rolled semi finished products, after cleaning, annealing, immersed in a melting zinc trough of about 460 C, zinc coating on the steel sheet, and then leveling leveling and chemical treatment. The SGCC material is harder than the SECC material and has poor ductility (avoiding deep drawing design). The zinc layer is thick and the electric welder is poor.
4, the content of stainless steel SUS301 Cr (chromium) is lower than that of SUS304, and the corrosion resistance is poor, but after cold processing, it can get good tensile and hardness and good elasticity, which is mostly used for spring spring and anti EMI.
5, stainless steel SUS304 is one of the most widely used stainless steel, because the steel containing Ni (nickel) is more corrosion resistant and heat-resistant than the steel containing Cr (chromium). It has very good mechanical properties, no heat treatment hardening and no elasticity.
标签:   钣金加工 加工 钣金