Discussion on the selection and explanation of sheet metal processing materials
Now, the sheet metal manufacturers first talk about the selection of sheet metal processing materials 1, cold rolling plate SPCC, sheet metal processing mainly electroplating and paint parts, low cost, easy to form, material thickness less than 3.2mm. 2, hot-rolled plate SHCC, material T or more 3.0mm, is also used electroplating, baking paint parts, low cost, but difficult to shape, mainly using flat parts. 3, galvanized sheet SECC, SGCC. SECC electrolysis plate is divided into N material and P material. N material is mainly used for surface treatment and high cost. P material is used for spraying parts. 4, copper; mainly conductive parts, the surface treatment is nickel plated, chrome plated or not processed, and the cost is high. 5, aluminum plate; generally used surface chromate (J11-A), oxidation (conductive oxidation, chemical oxidation), high cost, silver plated, nickel plated. 6, aluminum profile, complex cross-section material, used in a variety of boxes. The surface is treated with the same aluminum plate. 7, stainless steel; it is mainly used without any surface treatment and high cost.
常用的钣金加工材料说明1.镀锌钢板SECC、SECC的底材为一般的冷轧钢卷，在连续电镀锌产线经过脱脂、酸洗、电镀及各种后处理制程后，即成为电镀锌产品。SECC不但具有一般冷轧钢片的机械性能及近似的加工性，而且具有优越的耐蚀性及装饰性外观。在电子产品、家电及家具的市场上具有很大的竞争性及取代性。例如电脑机箱普遍使用的就是SECC。2. 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、电镀或者其他防护。⒊ 热浸镀锌钢板SGCC、热浸镀锌钢卷是指将热轧酸洗或冷轧后之半成品，经过清洗、退火，浸入温度约460°C的溶融锌槽中，而使钢片镀上锌层，再经调质整平及化学处理而成。SGCC材料比SECC材料硬、延展性差（避免深抽设计）、锌层较厚、电焊性差。4. 不锈钢SUS304、使用最广泛的不锈钢之一，因含Ni（镍）故比含Cr（铬）的钢较富有耐蚀性、耐热性，拥有非常好的机械性能，无热处理硬化现象，没有弹性。5.不锈钢SUS301、Cr（铬）的含量较SUS304低，耐蚀性较差，但经过冷加工在冲压加工中能获得很好的拉力和硬度，弹性较好，多用于弹片弹簧以及防EMI。
The common sheet metal processing materials show that 1. galvanized steel sheet SECC and SECC are used as cold rolled steel rolls. After the continuous galvanizing line is skimmed, acid washed, electroplating and various post-processing processes, it becomes a galvanized product. SECC not only has the mechanical properties and approximate machinability of cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It has great competitiveness and substitution in the market of electronic products, household appliances and furniture. For example, the common use of computer boxes is SECC. 2. the ordinary cold rolled sheet SPCC and SPCC refer to the continuous rolling of 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. Hot dipped galvanized steel SGCC and hot-dip galvanized steel rolls refer to the semi-finished products that will be hot rolled or cold rolled. After cleaning and annealing, they are immersed in the melting zinc groove of about 460 C, and the steel sheet is plated with zinc layer, and then made by tempering and 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. stainless steel SUS304, one of the most widely used stainless steel, 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. 5. stainless steel SUS301, Cr (chromium) content is lower than SUS304, corrosion resistance is poor, but after cold processing in stamping process can get good tensile and hardness, good elasticity, mostly used for spring spring and anti EMI.
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